Sub-facility for letter of credit Sub Facility For Letters Of Credit Sub facility for letters of credit. Document Transition Report Document Transition Report Geographical Geographical [Axis] Noncontrolling Interest [Member] Noncontrolling Interest [Member] Other long-term liabilities Other Liabilities, Noncurrent Other Liabilities, Noncurrent, Total Schedule Of Segment Reporting Information By Segment [Table] Schedule of Segment Reporting Information, by Segment [Table] Increase (Decrease) in Prepaid Expense and Other Assets Prepaid and other current assets Redeemable Noncontrolling Interest, Equity, Carrying Amount, Total Redeemable Noncontrolling Interest, Equity, Carrying Amount Noncontrolling interest Accumulated Other Comprehensive Income (Loss) Accumulated Other Comprehensive Income Loss Change Policy [Text Block] Accumulated other comprehensive income loss change. 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Comprehensive income attributable to NOW Inc Comprehensive Income (Loss), Net of Tax, Attributable to Parent Inventory, net Inventory Disclosure [Text Block] Trading Symbol Trading Symbol Buildings and Land [Member] Land and Building [Member] Common stock, shares issued Common Stock, Shares, Issued Common Stock, Shares, Issued, Total Prepaid and other current assets Prepaid Expense and Other Assets, Current Consolidated Entities [Domain] Line of Credit Facility, Interest Rate During Period Interest rate Debt Instrument [Table] Schedule of Long-Term Debt Instruments [Table] Beginning balance, shares Ending balance, shares Shares, Outstanding Accumulated Other Comprehensive Income (Loss) [Member] AOCI Attributable to Parent [Member] Acquisitions Business Combination Disclosure [Text Block] Net current-period other comprehensive income Net current-period other comprehensive income Other Comprehensive Income (Loss), Net of Tax Other comprehensive income Foreign currency translation adjustments Other Comprehensive Income (Loss), Foreign Currency Transaction and Translation Adjustment, Net of Tax, Portion Attributable to Parent Other Comprehensive Income (Loss), Foreign Currency Transaction and Translation Adjustment, Net of Tax, Portion Attributable to Parent, Total Minimum amount of credit facility required to maintain coverage ratio Minimum Amount Of Credit Facility Required To Maintain Coverage Ratio Minimum amount of credit facility required to maintain coverage ratio. Entity Address, City or Town Entity Address, City or Town Debt Debt Disclosure [Text Block] Summary of Property, Plant and Equipment Property, Plant and Equipment [Table Text Block] Subsequent Event [Member] Subsequent Event [Member] Subsequent Event Type [Axis] Performance-base restricted stock [Member] Performance Base Restricted Stock [Member] Performance base restricted stock. Additional Paid-In Capital [Member] Additional Paid-in Capital [Member] Property, Plant, and Equipment, Useful Life, Term, Description [Extensible Enumeration] Current liabilities: Liabilities, Current [Abstract] Current assets: Assets, Current [Abstract] Preferred stock, par value Preferred Stock, Par or Stated Value Per Share Reclassification of foreign currency translation adjustments Amounts reclassified from accumulated other comprehensive income (loss) Reclassification from Accumulated Other Comprehensive Income, Current Period, before Tax Statement of Stockholders' Equity [Abstract] Number of geographical area covered Number Of Geographic Markets Number of geographic markets. Current portion of operating lease liabilities Operating Lease, Liability, Current Agreement date Line of Credit Facility, Initiation Date Property, plant and equipment, net Property, plant and equipment, net Property, Plant and Equipment, Net Property, Plant and Equipment, Net, Beginning Balance Property, Plant and Equipment, Net, Ending Balance Statement of Comprehensive Income [Abstract] Entity Central Index Key Entity Central Index Key Stock Issued During Period, Value, Restricted Stock Award, Net of Forfeitures, Total Stock Issued During Period, Value, Restricted Stock Award, Net of Forfeitures Vesting of restricted stock Canada [Member] CANADA Amortization period of revenue recognized Amortization Period Of Revenue Recognized Amortization period of revenue recognized. Preferred stock, shares outstanding Preferred Stock, Shares Outstanding Preferred Stock, Shares Outstanding, Beginning Balance Preferred Stock, Shares Outstanding, Ending Balance Middle East [Member] Middle East Member Total current liabilities Liabilities, Current Current liabilities Entity Tax Identification Number Entity Tax Identification Number Income before income taxes Income (Loss) from Continuing Operations before Income Taxes, Noncontrolling Interest Senior Management Employees [Member] Senior Management Employees [Member] Senior management employees. Change in operating assets and liabilities, net of effects of acquisitions and divestitures: Increase (Decrease) in Operating Capital [Abstract] Description of line of credit Line of Credit Facility, Description Fair Values Derivatives Balance Sheet Location By Derivative Contract Type By Hedging Designation [Table] Fair Values Derivatives, Balance Sheet Location, by Derivative Contract Type [Table] Term of loan Debt Instrument, Term Construction in Progress [Member] Construction in Progress [Member] Award Type Award Type [Axis] Restricted Stock Awards [Member] Restricted Stock [Member] Geographical Geographical [Domain] Total assets Assets United States [Member] U.S. [Member] UNITED STATES Senior secured revolving credit facility commitment Senior Secured Revolving Credit Facility Commitment Senior secured revolving credit facility commitment. Entity Registrant Name Entity Registrant Name Accumulated deficit Retained Earnings (Accumulated Deficit) Retained Earnings (Accumulated Deficit), Total Retained Earnings (Accumulated Deficit), Beginning Balance Retained Earnings (Accumulated Deficit), Ending Balance Retained Earnings (Deficit) [Member] Retained Earnings [Member] Equity, Including Portion Attributable to Noncontrolling Interest Beginning balance Ending balance Total stockholders' equity Deferred income taxes Deferred Income Tax Liabilities, Net Operating profit (loss): Operating Income (Loss) [Abstract] Minimum [Member] Minimum [Member] Derivative Instruments and Hedging Activities Disclosure [Abstract] Equity Component Equity Component [Domain] Land [Member] Land [Member] Adjustments to reconcile net income to net cash provided by (used in) operating activities: Adjustments to Reconcile Net Income (Loss) to Cash Provided by (Used in) Operating Activities [Abstract] Debt Disclosure [Abstract] Entity Current Reporting Status Entity Current Reporting Status Common stock, shares authorized Common Stock, Shares Authorized Stock Repurchase Program, Authorized Amount Number of shares authorized to purchase ASSETS Assets [Abstract] Revenue Recognition Revenue from Contract with Customer [Policy Text Block] Common stock - par value $0.01; 330 million shares authorized; 106,716,052 and 110,369,266 shares issued and outstanding at June 30, 2023 and December 31, 2022, respectively Common Stock, Value, Issued Common Stock, Value, Issued, Total Common Stock, Value, Issued, Beginning Balance Common Stock, Value, Issued, Ending Balance Accrued Liabilities Accounts Payable, Accrued Liabilities, and Other Liabilities Disclosure, Current [Text Block] Percentage of excise tax on share repurchases Percentage of Excise Tax on Share Repurchases Percentage of excise tax on share repurchases Total Accrued liabilities Accrued Liabilities, Current Current Fiscal Year End Date Current Fiscal Year End Date Stock-based compensation Share-Based Payment Arrangement, Noncash Expense Share-Based Payment Arrangement, Noncash Expense, Total Total operating profit (loss) Operating Income (Loss) Operating profit Purchase price consideration Business Combination, Consideration Transferred Business Combination, Consideration Transferred, Total Income Tax Expense (Benefit) Income Tax Expense (Benefit), Total Income tax provision Performance based restricted stock awards goals over performance period Performance Based Restricted Stock Awards Performance Goal Period Performance based restricted stock awards performance goal period. Stock-based compensation expense Share-Based Payment Arrangement, Expense Disaggregation Of Revenue [Table] Disaggregation of Revenue [Table] Operating Equipment [Member] Equipment [Member] Intangibles, net Finite-Lived Intangible Assets, Net Finite-Lived Intangible Assets, Net, Total Finite-Lived Intangible Assets, Net, Beginning Balance Finite-Lived Intangible Assets, Net, Ending Balance Summary of Operating Results by Reportable Segment Schedule of Segment Reporting Information, by Segment [Table Text Block] Revenue Revenue from Contract with Customer [Text Block] Cumulative Effect, Period of Adoption, Adjustment [Member] Cumulative Effect, Period of Adoption, Adjustment [Member] Other Nonoperating Income (Expense), Total Other Nonoperating Income (Expense) Other income (expense) Minimum amount of credit facility required to maintain coverage ratio percentage Minimum Amount Of Credit Facility Required To Maintain Coverage Ratio Percentage Minimum amount of credit facility required to maintain coverage ratio percentage. Comprehensive Income (Loss), Net of Tax, Attributable to Noncontrolling Interest Comprehensive income(loss) attributable to noncontrolling interests Comprehensive income attributable to noncontrolling interest Comprehensive income attributable to noncontrolling interest Line Of credit Unused Capacity Percentage Line Of Credit Unused Capacity Percentage Line of credit amount unused expressed as a percentage. Operating expenses: Operating Expenses [Abstract] Property, Plant and Equipment [Abstract] Long-Term Debt, Type [Domain] Subsequent Events [Abstract] Other comprehensive income: Other Comprehensive Income (Loss), Net of Tax, Portion Attributable to Parent [Abstract] Commitments and Contingencies Disclosure [Abstract] Other assets Other Assets, Noncurrent Other Assets, Noncurrent, Total Other Other Accrued Liabilities, Current Equity [Text Block] Stockholders' Equity Increase in aggregate principal amount Line of Credit Facility, Increase (Decrease), Net Line of Credit Facility, Increase (Decrease), Net, Total Stockholders' equity: Equity, Attributable to Parent [Abstract] Line of Credit Facility, Available Borrowing Capacity Line of Credit Facility, Maximum Borrowing Capacity Cost of products Cost of Goods and Services Sold Cost of Goods and Services Sold, Total Earnings per share attributable to NOW Inc stockholders: Earnings Per Share [Abstract] Accounting Policies [Abstract] Share Based Compensation Arrangement By Share Based Payment Award [Line Items] Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items] Senior Secured Revolving Credit Facility [Member] Revolving Credit Facility [Member] Basic Earnings Per Share, Basic Earnings Per Share, Basic, Total Basic Components of AOCI Schedule of Accumulated Other Comprehensive Income (Loss) [Table Text Block] Provision for inventory Inventory Write-down Commitments and contingencies Commitments and Contingencies Business Combinations [Abstract] Income Statement [Abstract] Property, Plant and Equipment, net Property, Plant and Equipment Disclosure [Text Block] Statistical Measurement Statistical Measurement [Domain] Net cash provided by (used in) operating activities Net Cash Provided by (Used in) Operating Activities Award Type All Award Types Document Period End Date Document Period End Date Statistical Measurement Statistical Measurement [Axis] Allowance for doubtful accounts receivable Accounts Receivable, Allowance for Credit Loss Accounts Receivable, Allowance for Credit Loss, Beginning Balance Accounts Receivable, Allowance for Credit Loss, Ending Balance Commitments and Contingencies Commitments and Contingencies Disclosure [Text Block] Diluted Earnings Per Share, Diluted Earnings Per Share, Diluted, Total Diluted Revenue from Contract with Customer [Abstract] Fair Value Hierarchy and NAV Fair Value Hierarchy and NAV [Domain] Accounts payable, accrued liabilities and other, net Increase Decrease In Accounts Payable Accrued Liabilities And Other Net Increase decrease in accounts payable accrued liabilities and other net. Foreign currency forward contracts, liability Foreign Currency Contracts, Liability, Fair Value Disclosure Additional paid-in capital Additional Paid in Capital, Common Stock Additional Paid in Capital, Common Stock, Beginning Balance Additional Paid in Capital, Common Stock, Ending Balance Shares withheld for taxes Adjustment To Additional Paid In Capital Income Tax Effect From Share Based Compensation Net 1 Adjustment to additional paid in capital income tax effect from share based compensation net 1 Foreign currency forward contracts, gain (loss) related to changes in fair value Gain (Loss), Foreign Currency Transaction, before Tax Foreign Currency Transaction Gain (Loss), before Tax, Total Total cost of shares repurchased Payments for Repurchase of Common Stock Repurchases of common stock Stockholders' Equity Attributable to Noncontrolling Interest, Total Stockholders' Equity Attributable to Noncontrolling Interest, Beginning Balance Stockholders' Equity Attributable to Noncontrolling Interest, Ending Balance Equity, Attributable to Noncontrolling Interest Noncontrolling interest LIABILITIES AND STOCKHOLDERS' EQUITY Liabilities and Equity [Abstract] Entity Address, Postal Zip Code Entity Address, Postal Zip Code Entity Interactive Data Current Entity Interactive Data Current Line of credit facility interest rate adjustment Line Of Credit Facility Interest Rate Adjustment Line of credit facility interest rate adjustment. Credit Facility Credit Facility [Domain] Equity [Abstract] Stock based awards, shares granted Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Grants in Period Entity Incorporation, State or Country Code Entity Incorporation, State or Country Code Derivatives Fair Value [Line Items] Derivatives, Fair Value [Line Items] Equity Components Equity Components [Axis] Receivables Increase (Decrease) in Accounts Receivable Taxes (non-income) Accrual for Taxes Other than Income Taxes, Current Inventory Disclosure [Abstract] Purchase price consideration in cash Payments to Acquire Businesses, Gross Other Expense [Member] Other Expense [Member] Local Phone Number Local Phone Number Property Plant And Equipment [Line Items] Property, Plant and Equipment [Line Items] Less: Inventory reserves Inventory Valuation Reserves Finished goods and other Inventory Finished Goods And Other Inventory finished goods and other. Stock Issued During Period, Shares, Restricted Stock Award, Net of Forfeitures, Total Stock Issued During Period, Shares, Restricted Stock Award, Net of Forfeitures Vesting of restricted stock, shares Goodwill Goodwill Goodwill, Total Goodwill, Beginning Balance Goodwill, Ending Balance Statement of Cash Flows [Abstract] Number of shares repurchased Stock Repurchased and Retired During Period, Shares Organization, Consolidation and Presentation of Financial Statements [Abstract] Accumulated other comprehensive loss Accumulated other comprehensive income (loss), Beginning balance Accumulated other comprehensive income (loss), Ending balance Accumulated Other Comprehensive Income (Loss), Net of Tax Accumulated Other Comprehensive Income (Loss), Net of Tax, Total Segment Reporting Information [Line Items] Segment Reporting Information [Line Items] International [Member] International [Member] International. Common stock, par value Common Stock, Par or Stated Value Per Share Effect of exchange rates on cash and cash equivalents Effect of Exchange Rate on Cash, Cash Equivalents, Restricted Cash, and Restricted Cash Equivalents, Including Disposal Group and Discontinued Operations Effect of Exchange Rate on Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents, Including Disposal Group and Discontinued Operations, Total Numerator: Net Income (Loss) Available to Common Stockholders, Basic [Abstract] Cumulative Effect, Period of Adoption Cumulative Effect, Period of Adoption [Axis] Long-Lived Tangible Asset Long-Lived Tangible Asset [Axis] Schedule Of Share Based Compensation Arrangements By Share Based Payment Award [Table] Schedule of Share-Based Compensation Arrangements by Share-Based Payment Award [Table] Maximum [Member] Maximum [Member] Assets and Liabilities Assumed and Recognized Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Finite-Lived Intangibles Organization and Basis of Presentation Organization, Consolidation and Presentation of Financial Statements Disclosure [Text Block] Stock-based compensation APIC, Share-Based Payment Arrangement, Increase for Cost Recognition APIC, Share-based Payment Arrangement, Increase for Cost Recognition, Total Average price per share Shares Acquired, Average Cost Per Share Net change in cash and cash equivalents Cash, Cash Equivalents, Restricted Cash, and Restricted Cash Equivalents, Period Increase (Decrease), Including Exchange Rate Effect Payables and Accruals [Abstract] Other, net Payments for (Proceeds from) Other Investing Activities Number of acquisitions Number of Businesses Acquired Canadian Subsidiaries [Member] CALIFORNIA Number of countries distribution occur through vendors Number Of Vendor Distributed Countries Number of vendor distributed countries. Schedule of Inventory Schedule of Inventory, Current [Table Text Block] Business Segments Segment Reporting Disclosure [Text Block] City Area Code City Area Code Inventories, net Inventories, net Inventory, Net Cash flows from operating activities: Net Cash Provided by (Used in) Operating Activities [Abstract] Denominator: Weighted Average Number of Shares Outstanding, Basic [Abstract] Euro Currency Rate Loans [Member] Euro Currency Rate Loans [Member] Euro currency rate loans member Less: accumulated depreciation Accumulated Depreciation, Depletion and Amortization, Property, Plant, and Equipment Accumulated Depreciation, Depletion and Amortization, Property, Plant, and Equipment, Total Accumulated Depreciation, Depletion and Amortization, Property, Plant, and Equipment, Beginning Balance Accumulated Depreciation, Depletion and Amortization, Property, Plant, and Equipment, Ending Balance Weighted average basic common shares outstanding Weighted-average common shares outstanding, basic Weighted Average Number of Shares Outstanding, Basic Weighted Average Number of Shares Outstanding, Basic, Total Work in process Inventory, Work in Process, Gross Cash flows from financing activities: Net Cash Provided by (Used in) Financing Activities [Abstract] Statement [Table] Statement [Table] Increase (Decrease) in Contract with Customer, Liability Increase in contract liabilities for net customer deposits Decrease in contract liabilities for net customer deposits Document Fiscal Period Focus Document Fiscal Period Focus UK Subsidiaries [Member] UNITED KINGDOM Derivatives Not Designated as Hedging Instrument [Member] Not Designated as Hedging Instrument [Member] Statement [Line Items] Statement [Line Items] Antidilutive Securities excluded from Computation of Earnings Per Share Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Liability Value, Beginning Balance Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Liability Value, Ending Balance Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Liability Value Fair value of contingent consideration Subsequent Event [Line Items] Letters of credit Letters of Credit Outstanding, Amount Cumulative Effect, Period of Adoption Cumulative Effect, Period of Adoption [Domain] Common Stock [Member] Common Stock [Member] Debt Instrument [Line Items] Debt Instrument [Line Items] Cash and cash equivalents Cash and cash equivalents, beginning of period Cash and cash equivalents, end of period Cash and Cash Equivalents, at Carrying Value Cash and Cash Equivalents, at Carrying Value, Total Entity Common Stock, Shares Outstanding Entity Common Stock, Shares Outstanding Fair Value of Financial Instruments Fair Value of Financial Instruments, Policy [Policy Text Block] Contingent liability Loss Contingency Accrual Loss Contingency Accrual, Beginning Balance Loss Contingency Accrual, Ending Balance Treasury Stock - at average cost; 244,604 shares at March 31, 2023 Treasury Stock, Value Treasury Stock, Value, Total Cover [Abstract] Receivables, net. Receivables Net [Member] Receivables, Net [Member] Document Fiscal Year Focus Document Fiscal Year Focus Accumulated Other Comprehensive Income (Loss) ("AOCI") Comprehensive Income (Loss) Note [Text Block] Weighted average grant date fair value, Granted Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Grants in Period, Weighted Average Grant Date Fair Value Segment Reporting [Abstract] Security Exchange Name Security Exchange Name Receivables Accounts Receivable [Policy Text Block] Other comprehensive income (loss) before reclassifications Other Comprehensive Income (Loss), before Reclassifications, before Tax Preferred stock, shares issued Preferred Stock, Shares Issued Preferred Stock, Shares Issued, Total Preferred stock, shares authorized Preferred Stock, Shares Authorized Technology Equipment [Member] Information Technology Assets [Member] Property, plant and equipment, gross Property, Plant and Equipment, Gross Property, Plant and Equipment, Gross, Total Property, Plant and Equipment, Gross, Beginning Balance Property, Plant and Equipment, Gross, Ending Balance Hedging Designation Hedging Designation [Domain] Basis Of Presentation And Organization [Abstract] Basis of presentation and organization. Exercise of stock options Stock Issued During Period, Value, Stock Options Exercised Entity Emerging Growth Company Entity Emerging Growth Company Remaining Performance Obligations Revenue, Remaining Performance Obligation, Provision for Loss [Policy Text Block] Amendment Flag Amendment Flag TSR metric [Member] Cumulative Shareholder Return Performance Stock Awards [Member] Cumulative shareholder return performance stock awards. Summary of Accrued Liabilities Schedule of Accrued Liabilities [Table Text Block] Basis of Presentation Basis of Accounting, Policy [Policy Text Block] Variable Rate [Domain] Percentage of swing line sub facility Percentage Of Swing Line Sub Facility Percentage of swing line sub facility. Entity File Number Securities Act File Number Fixed charge coverage ratio Line Of Credit Facility Covenant Terms Fixed Charge Coverage Ratio Line of credit facility covenant terms fixed charge coverage ratio. Business Combination, Contingent Consideration Arrangements, Change in Amount of Contingent Consideration, Asset Change in fair value of contingent consideration Line of Credit Facility [Abstract] Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents, Total Cash, Cash Equivalents, Restricted Cash, and Restricted Cash Equivalents Cash and cash equivalents, beginning of period Cash and cash equivalents, end of period Share-Based Payment Arrangement [Abstract] Treasury Stock, Retired, Cost Method, Amount Common stock retired Common stock retired Contract Assets and Liabilities Contract With Customer Assets And Liabilities Policy [Text Block] Contract with customer assets and liabilities. Accounts payable Accounts Payable, Current Accounts Payable, Current, Total Variable Interest Entity, Primary Beneficiary [Member] Variable Interest Entities ("VIE") Variable Interest Entity, Qualitative or Quantitative Information, Ownership Percentage Interest in one VIE Preferred stock - par value $0.01; 20 million shares authorized; no shares issued and outstanding Preferred Stock, Value, Issued Preferred Stock, Value, Issued, Total Preferred Stock, Value, Issued, Beginning Balance Preferred Stock, Value, Issued, Ending Balance Entity Small Business Entity Small Business Entity Shell Company Entity Shell Company Title of Individual Title of Individual [Axis] Unused portion of commitment fee range Line of Credit Facility, Unused Capacity, Commitment Fee Percentage Restricted Stock and Restricted Stock Units [Member] Restricted Stock And Restricted Stock Units [Member] Restricted stock and restricted stock units. Earnings Per Share Earnings Per Share [Text Block] Revenues [Abstract] Revenue: Entity Address, Address Line One Entity Address, Address Line One Effective tax rates Effective Tax Rate Continuing Operations Effective tax rate continuing operations. Other current liabilities Other Liabilities, Current Other Liabilities, Current, Total Excise tax on share repurchases Excise Tax on Share Repurchases Excise tax on share repurchases. Undistributed Earnings (Loss) Allocated to Participating Securities, Basic, Total Undistributed Earnings (Loss) Allocated to Participating Securities, Basic Less: net income attributable to participating securities Subsequent Event Type [Domain] Income Statement Location Income Statement Location [Axis] Long-Term Debt, Type [Axis] Net income Net income Net income Net Income (Loss), Including Portion Attributable to Noncontrolling Interest Fair Value, Inputs, Level 2 [Member] Fair Value, Inputs, Level 2 [Member] Depreciation and amortization Depreciation, Depletion and Amortization Depreciation, Depletion and Amortization, Total Treasury Stock, Value, Acquired, Cost Method Common stock repurchased Common stock repurchased Title of 12(b) Security Title of 12(b) Security Prepaid and Other Current Assets [Member] Prepaid Expenses and Other Current Assets [Member] Treasury Stock Common [Member] Treasury Stock, Common [Member] Cash flows from investing activities: Net Cash Provided by (Used in) Investing Activities [Abstract] Line of credit facility borrowings Long-Term Line of Credit Long-term Line of Credit, Total Effect of dilutive securities Weighted Average Number of Shares Outstanding, Diluted, Adjustment Weighted Average Number Diluted Shares Outstanding Adjustment, Total Long-Lived Tangible Asset Long-Lived Tangible Asset [Domain] Subsequent Event [Table] Inventories Increase (Decrease) in Inventories Increase (Decrease) in Inventories, Total Deferred revenue Contract with Customer, Liability Contract with Customer, Liability, Total Other, net Other Operating Activities, Cash Flow Statement Property Plant And Equipment Useful Life And Values [Abstract] Property plant and equipment useful life and values. Common stock, shares outstanding Common Stock, Shares, Outstanding Common Stock, Shares, Outstanding, Beginning Balance Common Stock, Shares, Outstanding, Ending Balance Number of shares authorized to purchase Stock Repurchase Program, Number of Shares Authorized to be Repurchased Stock-based Compensation and Outstanding Awards Share-Based Payment Arrangement [Text Block] Income Statement Location Income Statement Location [Domain] Schedule of Shares Repurchased Schedule of Shares Repurchased [Table Text Block] Tabular disclosure of shares repurchased. Document Type Document Type Net cash provided by (used in) investing activities Net Cash Provided by (Used in) Investing Activities Document Quarterly Report Document Quarterly Report Foreign currency forward contracts, assets Foreign Currency Contract, Asset, Fair Value Disclosure Foreign currency forward contracts, notional amount Derivative, Notional Amount Net income attributable to NOW Inc. stockholders Net Income (Loss) Available to Common Stockholders, Basic Net income (loss) attributable to the Company's stockholders Less: Inventory reserves Total inventory Total inventory Inventory, Gross Net cash provided by (used in) financing activities Net Cash Provided by (Used in) Financing Activities Entity Filer Category Entity Filer Category Balance Sheet Location Balance Sheet Location [Domain] Variable Rate [Axis] Total liabilities Liabilities Schedule Of Property Plant And Equipment [Table] Property, Plant and Equipment [Table] Impairment and other charges Asset Impairment Charges Asset Impairment Charges, Total Other Current Liabilities [Member] Other Current Liabilities [Member] NOW Inc. stockholders' equity Equity, Attributable to Parent Stockholders' Equity Attributable to Parent, Beginning Balance Stockholders' Equity Attributable to Parent, Ending Balance Secured Overnight Financing Rate Sofr Overnight Index Swap Rate Secured Overnight Financing Rate (SOFR) Overnight Index Swap Rate [Member] Payments relating to finance leases and other, net Payments Relating To Finance Leases And Other Net Payments relating to finance leases and other net. Consolidated Entities [Axis] Net income attributable to NOW Inc. Net income attributable to NOW Inc Net Income (Loss) Net income (loss) Contract with Customer, Asset, after Allowance for Credit Loss, Current, Total Contract with Customer, Asset, after Allowance for Credit Loss, Current Contract Assets Statement of Financial Position [Abstract] Recently Issued Accounting Standards Recently Issued Accounting Standards Policy [Text Block] Recently issued accounting standards. Weighted average diluted common shares outstanding Weighted-average common shares outstanding, diluted Weighted Average Number of Shares Outstanding, Diluted Credit Facility Credit Facility [Axis] Use of Estimates Use of Estimates, Policy [Policy Text Block] Income Taxes Income Tax Disclosure [Text Block] Warehousing, selling and administrative Warehousing Selling And Administrative Expense The aggregate total costs related to selling a firm's product and services, as well as all other general and administrative expenses excluding Impairment charges. Direct selling expenses (for example, credit, warranty, and advertising) are expenses that can be directly linked to the sale of specific products. Indirect selling expenses are expenses that cannot be directly linked to the sale of specific products, for example telephone expenses, Internet, and postal charges. General and administrative expenses include salaries of non-sales personnel, rent, utilities, communication, etc. Computation of Basic and Diluted Earnings Per Share Schedule of Earnings Per Share, Basic and Diluted [Table Text Block] Disaggregation Of Revenue [Line Items] Disaggregation of Revenue [Line Items] Receivables, net Receivables, Net, Current Receivables, Net, Current, Total Comprehensive income Comprehensive Income (Loss), Net of Tax, Including Portion Attributable to Noncontrolling Interest Fair Value Hierarchy and NAV Fair Value Hierarchy and NAV [Axis] Hedging Designation Hedging Designation [Axis] Purchases of property, plant and equipment Payments to Acquire Property, Plant, and Equipment Payments to Acquire Property, Plant, and Equipment, Total Reclassification Reclassification, Comparability Adjustment [Policy Text Block] Compensation and other related expenses Employee-related Liabilities, Current Employee-related Liabilities, Current, Total Income Tax Disclosure [Abstract]