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Compensation Actually Paid vs. Total Shareholder Return Compensation Actually Paid vs. Total Shareholder Return [Text Block] Americas Building Solutions Americas Building Solutions [Member] Americas Building Solutions Actuarial losses and prior service credits for pension and other postretirement plans, net of tax of $2 million and $nil million for the three months ended June 30, 2026, and June 30, 2025, respectively; and $2 million and $1 million for the six months ended June 30, 2026, and June 30, 2025, respectively Other Comprehensive (Income) Loss, Defined Benefit Plan, after Reclassification Adjustment, after Tax MNPI Disclosure Timed for Compensation Value MNPI Disclosure Timed for Compensation Value [Flag] Other current liabilities Total other current liabilities Other Liabilities, Current Other noncurrent assets Other Assets, Noncurrent Document Type Document Type Notes acquired Debt Instrument, Repurchased Face Amount Acquisitions, net of cash acquired Total outflow in the 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redeemable noncontrolling interests Number of Subsidiaries with Redeemable Noncontrolling Interests Number of Subsidiaries with Redeemable Noncontrolling Interests Liability Class [Axis] Liability Class [Axis] Other Commitments [Line Items] Other Commitments [Line Items] 3.400% Senior Notes due 2027 Three Point Four Percent Notes Due 2027 [Member] Three Point Four Percent Notes Due 2027 Accounts payable Increase (Decrease) in Accounts Payable Other accruals Other Accrued Liabilities, Current Entity Incorporation, State or Country Code Entity Incorporation, State or Country Code Accumulated gain (loss), net, cash flow hedge, noncontrolling interest Accumulated Gain (Loss), Net, Cash Flow Hedge, Noncontrolling Interest [Member] Aggregate Erroneous Compensation Not Yet Determined Aggregate Erroneous Compensation Not Yet Determined [Text Block] Reclassification out of Accumulated Other Comprehensive Income Reclassification out of Accumulated Other Comprehensive Income [Table Text Block] Material Terms of Trading Arrangement Material Terms of Trading Arrangement [Text Block] Non-NEOs Non-NEOs [Member] Vesting Date Fair Value of Equity Awards Granted and Vested in Covered Year Vesting Date Fair Value of Equity Awards Granted and Vested in Covered Year [Member] Comprehensive income Comprehensive Income (Loss), Net of Tax, Including Portion Attributable to Noncontrolling Interest Debt Instrument [Axis] Debt Instrument [Axis] Subsequent Event [Table] Subsequent Event [Table] Cash payments Cash consideration Payments to Acquire Businesses, Gross Other liabilities Business Combination, Recognized Liability Assumed, Other Liability, Noncurrent Share-based compensation Share-Based Payment Arrangement, Noncash Expense Ownership Interest [Axis] Ownership Interest [Axis] Ownership Interest Disposal Group Name [Axis] Disposal Group Name [Axis] Schedule of Debt Schedule of Debt [Table Text Block] Schedule of Inventory, Current Schedule of Inventory, Current [Table Text Block] 2027 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Officers, Footnote Named Executive Officers, Footnote [Text Block] Energy costs Cost, Energy Cost, Energy Retained earnings Retained Earnings (Accumulated Deficit) Product and Service [Axis] Product and Service [Axis] Arcosa Arcosa [Member] Arcosa 5.200% Guaranteed Notes due 2029 Five Point Two Percent Guaranteed Notes Due 2029 [Member] Five Point Two Percent Guaranteed Notes Due 2029 Aggregate Change in Present Value of Accumulated Benefit for All Pension Plans Reported in Summary Compensation Table Aggregate Change in Present Value of Accumulated Benefit for All Pension Plans Reported in Summary Compensation Table [Member] Operating lease right-of-use assets, net Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Operating Lease, Right of Use Asset Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Operating Lease, Right of Use Asset Awards Close in Time to MNPI Disclosures Awards Close in Time to MNPI Disclosures [Table] Common stock Common Stock [Member] Other obligations Other Notes [Member] Other Notes Fair Value Measurement Fair Value Measurement [Domain] Reclassification out of Accumulated Other Comprehensive Income [Table] Reclassification out of Accumulated Other Comprehensive Income [Table] Amounts related to employee share plans Payments For (Proceeds From) Employee Share Plans Payments For (Proceeds From) Employee Share Plans Compensation Actually Paid vs. Company Selected Measure Compensation Actually Paid vs. Company Selected Measure [Text Block] Cover [Abstract] Noncontrolling Interest [Abstract] Dividends paid Payments of Dividends, Common and Preferred Stock Payments of Dividends, Common and Preferred Stock Derivative Contract [Domain] Derivative Contract [Domain] Foreign currency translation adjustment Goodwill, Foreign Currency Translation, Gain (Loss) Equity Awards Adjustments Equity Awards Adjustments [Member] Seven hundredth fifty million loan Seven Hundredth Fifty Million Loan [Member] Seven Hundredth Fifty Million Loan Number of businesses acquired Business Combination, Number of Businesses Acquired Total liabilities, redeemable noncontrolling interests and equity Liabilities and Equity Employee Stock Option Share-Based Payment Arrangement, Option [Member] Current portion of long-term debt Debt, Current Noncontrolling interests Equity, Attributable to Noncontrolling Interest Other obligations Notes Payable, Other Payables [Member] Segments [Axis] Segments [Axis] Other liabilities Increase (Decrease) in Other Operating Liabilities Additional 402(v) Disclosure Additional 402(v) Disclosure [Text Block] Related and Nonrelated Parties [Domain] Related and Nonrelated Parties [Domain] Schedule of Accounts, Notes, Loans and Financing Receivable Schedule of Accounts, Notes, Loans and Financing Receivable [Table Text Block] Inventory Disclosure [Abstract] Tabular List, Table Tabular List [Table Text Block] Additional paid-in capital Additional Paid 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shares authorized (in shares) Preferred Stock, Shares Authorized 4.500% Senior Notes due 2048 Four Point Five Percent Notes Due 2048 [Member] Four Point Five Percent Notes Due 2048 Weighted average common shares outstanding Earnings Per Share, Other Disclosure [Abstract] Earnings Per Share, Other Disclosure 4.400% Senior Notes due 2047 Four Point Four Percent Notes Due 2047 [Member] Four Point Four Percent Notes Due 2047 Preferred stock, €1.27 par value, nil, 150,000 and 150,000 shares authorized and nil, 50,000 and 50,000 shares issued and outstanding for 5% preferred stock and nil, 872,000 and 872,000 shares authorized, issued and outstanding for 7% 'A' preferred stock, as of June 30, 2026, December 31, 2025, and June 30, 2025, respectively Preferred Stock, Value, Issued Q2 Q2 [Member] Q2 Adjustment to Compensation: Adjustment to Compensation [Axis] Amounts reclassified from Accumulated other comprehensive loss Reclassification from Accumulated Other Comprehensive Income, Current Period, Net of Tax Foreign currency translation and other Accounts Receivable, Allowance for Credit Loss, Foreign Currency Translation And Other Accounts Receivable, Allowance for Credit Loss, Foreign Currency Translation And Other Net (income) attributable to redeemable noncontrolling interests Net income attributable to redeemable noncontrolling interests Net Income (Loss) Attributable to Redeemable Noncontrolling Interest Class of Stock [Domain] Class of Stock [Domain] Rule 10b5-1 Arrangement Terminated Rule 10b5-1 Arrangement Terminated [Flag] Aggregate Erroneous Compensation Amount Aggregate Erroneous Compensation Amount Cash paid for interest (including finance leases) Interest Paid, Excluding Capitalized Interest, Operating Activity Purchases of property, plant and equipment, and intangibles Payments to Acquire Productive Assets Statement of Cash Flows [Abstract] Accumulated foreign currency adjustment including portion attributable to noncontrolling interest Accumulated Foreign 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Disclosure [Table] Total consideration Business Combination, Consideration Transferred Five percent preferred stock Five Percent Preferred Stock [Member] Five Percent Preferred Stock Retirement Plan Type [Domain] Retirement Plan Type [Domain] Additional Paid-in Capital Additional Paid-in Capital [Member] Entity Filer Category Entity Filer Category Construction contract assets Construction Contracts [Member] Guarantor Obligations, Nature [Domain] Guarantor Obligations, Nature [Domain] Impairment charge Impairment charge Goodwill, Impairment Loss Name Trading Arrangement, Individual Name 3.950% Senior Notes due 2028 Three Point Nine Five Percent Notes Due 2028 [Member] Three Point Nine Five Percent Notes Due 2028 Cash and cash equivalents Cash and cash equivalents presented in the Condensed Consolidated Balance Sheets Cash and Cash Equivalent Retirement Plan Sponsor Location [Axis] Retirement Plan Sponsor Location [Axis] Raw materials Inventory, Raw Materials, Net of Reserves Variable 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Interests Noncontrolling Interest, Increase (Decrease) From Transactions Involving Noncontrolling Interests Entity Address, Address Line Two Entity Address, Address Line Two Accounts and Financing Receivables [Table] Accounts and Financing Receivables [Table] Net income Net Income (Loss), Including Portion Attributable to Noncontrolling Interest Business combination, price per share (USD per share) Business Combination, Price Per Share Current assets: Assets, Current [Abstract] Non-PEO NEO Non-PEO NEO [Member] Senior notes Senior Notes [Member] Entity Address, Address Line One Entity Address, Address Line One Income tax expense Income tax expense Income tax expense (benefit) Income Tax Expense (Benefit) Net income Net Income (Loss), Including Portion Attributable to Nonredeemable Noncontrolling Interest Total cost of revenues Cost of Product and Service Sold 6.400% Notes due 2033 6.400% Notes due 2033 Six Point Four Percent Notes Due 2033 [Member] Six Point Four Percent Notes Due 2033 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