Accumulated Amortization Finite-Lived Intangible Assets, Accumulated Amortization Expected future employer contribution, current year Defined Benefit Plan, Expected Future Employer Contributions, Current Fiscal Year Range [Domain] Statistical Measurement [Domain] Operating Lease, Liability, Current, Statement of Financial Position [Extensible List] Operating Lease, Liability, Current, Statement of Financial Position [Extensible Enumeration] Expected return on plan assets Defined Benefit Plan, Expected Return (Loss) on Plan Assets Award Timing Predetermined Award Timing Predetermined [Flag] 2026 (excluding the three months ended March 31, 2026) Lessee, Operating Lease, Liability, to be Paid, Remainder of Fiscal Year Indefinite-lived Intangible Assets [Axis] Indefinite-Lived Intangible Assets [Axis] Asset Class [Axis] Asset Class [Axis] Entity File Number Entity File Number Additional Paid-in Capital Additional Paid-in Capital [Member] Accordion feature, percentage of LTM EBITDA Line Of Credit Facility, Accordion Feature, Percentage of LTM EBITDA Line Of Credit Facility, Accordion Feature, Percentage of LTM EBITDA Retention payable ($27,765 and $27,743 related to VIEs) Retainage payable Contract Payable Retainage Contract Payable Retainage Net revenue recognized related to performance obligations satisfies (or partially satisfied) in prior periods Contract with Customer, Performance Obligation Satisfied in Previous Period Tabular List, Table Tabular List [Table Text Block] Total other comprehensive income (loss), Tax Expense Other Comprehensive Income (Loss), Tax Fixed charge coverage ratio (maximum) Fixed Charge Coverage Ratio (Maximum) Fixed Charge Coverage Ratio (Maximum) Leases [Abstract] Leases [Abstract] Accumulated Impairment Charge Intangible Assets Accumulated Impairment Charge Accumulated amount of impairment loss of assets, excluding financial assets and goodwill, lacking physical substance with a finite life. Other unbilled costs and profits Unbilled Contracts Receivable Recent Accounting Pronouncements New Accounting Pronouncements, Policy [Policy Text Block] Purple Line Extension Section 2 and Section 3 Purple Line Extension Section2 And Section3 [Member] Purple Line Extension Section 2 And Section 3 [Member] Secured Overnight Financing Rate (SOFR) Secured Overnight Financing Rate (SOFR) [Member] Costs and estimated earnings in excess of billings ($71,526 and $82,426 related to VIEs) Costs and estimated earnings in excess of billings Total costs and estimated earnings in excess of billings Contract with Customer, Asset, after Allowance for Credit Loss, Current Debt Securities Debt Securities [Member] Goodwill [Line Items] Goodwill [Line Items] Unrealized Losses Debt Securities, Available-for-Sale, Accumulated Gross Unrealized Loss, before Tax Trading Arrangements, by Individual Trading Arrangements, by Individual [Table] Federal Funds Rate Fed Funds Effective Rate Overnight Index Swap Rate [Member] BASIC EARNINGS (LOSS) PER COMMON SHARE (in dollars per share) Basic (in dollars per share) Earnings Per Share, Basic Adjustment to Compensation: Adjustment to Compensation [Axis] Named Executive Officers, Footnote Named Executive Officers, Footnote [Text Block] Other Other Assets, Miscellaneous, Current Revenue Revenue from Contract with Customer [Text Block] TOTAL OTHER COMPREHENSIVE INCOME (LOSS), NET OF TAX Other comprehensive loss Other Comprehensive Income (Loss), Net of Tax Joint venture cash and cash equivalents Corporate Joint Venture [Member] Schedule of Reportable Segments Schedule of Segment Reporting Information, by Segment [Table Text Block] Debt Instrument, Redemption, Period [Axis] Debt Instrument, Redemption, Period [Axis] Remaining performance obligations revenue amount Revenue, Remaining Performance Obligation, Amount Schedule of Available-for-Sale Securities Reconciliation Schedule of Available-for-Sale Securities Reconciliation [Table Text Block] Adjustment to Compensation, Amount Adjustment to Compensation Amount Concentration risk (as a percent) Concentration Risk, Percentage Unapproved change orders Construction Contractor, Contract Cost, Subject to Uncertainty, Amount Unamortized Discounts and Issuance Costs Debt Instrument, Unamortized Discount (Premium) and Debt Issuance Costs, Net Share-based compensation expense Share-Based Payment Arrangement, Noncash Expense Employee Stock Option Share-Based Payment Arrangement, Option [Member] Award Timing MNPI Disclosure Award Timing MNPI Disclosure [Text Block] Net Leverage Ratio Net Leverage Ratio [Member] Net Leverage Ratio VIEs Variable Interest Entity, Primary Beneficiary [Member] Settlement on judgment Litigation Settlement, Amount Awarded from Other Party Future funding commitments Future Funding Commitments Future Funding Commitments Dividends Cash dividend declared Dividends, Common Stock, Cash Contractor license Contractual Rights [Member] Total stockholders' equity Equity, Attributable to Parent Insider Trading Policies and Procedures [Line Items] Costs for share-based payment arrangements Share-Based Payment Arrangement, Expense Performance Based RSUs Performance Based RSUs [Member] Performance Based RSUs Unfavorable Adjustment Legal Ruling Pertaining To Mass-Transit Project In California Unfavorable Adjustment Legal Ruling Pertaining To Mass-Transit Project In California [Member] Unfavorable Adjustment Legal Ruling Pertaining To Mass-Transit Project In California Common stock, shares authorized (in shares) Common Stock, Shares Authorized W Philadelphia Hotel W Philadelphia Hotel [Member] W Philadelphia Hotel Goodwill and Intangible Assets Disclosure [Abstract] Goodwill and Intangible Assets Disclosure [Abstract] CURRENT ASSETS: Assets, Current [Abstract] Loss contingency, damages paid, value Loss Contingency, Damages Paid, Value Term Loan B Term Loan B [Member] Term Loan B TOTAL LIABILITIES AND EQUITY Liabilities and Equity Defined Benefit Pension Plan Defined benefit pension plan adjustments Accumulated Defined Benefit Plans Adjustment Attributable to Parent [Member] Concentration Risk Benchmark [Axis] Concentration Risk Benchmark [Axis] LIABILITIES AND EQUITY Liabilities and Equity [Abstract] Cover [Abstract] Cover [Abstract] Cash and cash equivalents Cash and Cash Equivalents, Fair Value Disclosure Bridges Bridges [Member] Bridges [Member] Maximum Maximum [Member] Weighted-Average Amortization Period Finite-Lived Intangible Asset, Useful Life LESS: NET INCOME ATTRIBUTABLE TO NONCONTROLLING INTERESTS Net Income (Loss) Attributable to Noncontrolling Interest Bridge Loan Bridge Loan [Member] Total, Fair Value Debt Securities, Available-for-Sale, Unrealized Loss Position Carrying Value Finite-Lived Intangible Assets, Net Schedule of Maturity of Operating Lease Liabilities on an Undiscounted Basis Lessee, Operating Lease, Liability, to be Paid, Maturity [Table Text Block] Concentration Risk Type [Domain] Concentration Risk Type [Domain] Non-PEO NEO Average Total Compensation Amount Non-PEO NEO Average Total Compensation Amount Debt Instrument [Line Items] Debt Instrument [Line Items] Schedule of Share-based Compensation Arrangements by Share-based Payment Award [Table] Schedule of Share-Based Compensation Arrangements by Share-Based Payment Award [Table] Accumulated Impairment Charge Intangible Assets Accumulated Impairment Value Sum of the accumulated amount of impairment loss of all intangible assets, excluding goodwill, as of the balance sheet date. Adjustment to Non-PEO NEO Compensation Footnote Adjustment to Non-PEO NEO Compensation Footnote [Text Block] Pay vs Performance Disclosure [Line Items] U.S. government agency securities US Government Agencies Debt Securities [Member] Total lease liabilities Total Operating Lease, Liability Retirement Benefits [Abstract] Retirement Benefits [Abstract] Forgone Recovery due to Disqualification of Tax Benefits, Amount Forgone Recovery due to Disqualification of Tax Benefits, Amount Debt Instrument, Redemption, Period One Debt Instrument, Redemption, Period One [Member] Federal agencies Federal Agencies [Member] Federal Agencies [Member] Liabilities Liabilities [Abstract] Line of Credit Facility, Lender [Domain] Line of Credit Facility, Lender [Domain] Non-Rule 10b5-1 Arrangement Terminated Non-Rule 10b5-1 Arrangement Terminated [Flag] Depreciation and amortization Depreciation, Depletion and Amortization, Nonproduction INCOME BEFORE INCOME TAXES Income (Loss) from Continuing Operations before Income Taxes, Noncontrolling Interest Entity Shell Company Entity Shell Company Percentage of principal amount redeemed (as a percent) Debt Instrument, Redemption Price, Percentage of Principal Amount Redeemed OTHER LONG-TERM LIABILITIES ($12,992 and $10,602 related to VIEs) Other long-term Liabilities Other Liabilities, Noncurrent Schedule of Long-term Debt Instruments [Table] Schedule of Long-Term Debt Instruments [Table] Proceeds from sale of property and equipment Proceeds from Sale of Property, Plant, and Equipment Proceeds from debt Proceeds from Issuance of Debt Loss Contingency Nature [Axis] Loss Contingency Nature [Axis] Debt Instrument, Redemption, Period [Domain] Debt Instrument, Redemption, Period [Domain] Goodwill impairment charge Goodwill, Impairment Loss Operating Segments Operating Segments [Member] Schedule of Variable Interest Entities [Table] Variable Interest Entity [Table] Statement of Cash Flows [Abstract] Statement of Cash Flows [Abstract] Company Selected Measure Amount Company Selected Measure Amount 2029 Lessee, Operating Lease, Liability, to be Paid, Year Three LESS: COMPREHENSIVE INCOME ATTRIBUTABLE TO NONCONTROLLING INTERESTS Comprehensive Income (Loss), Net of Tax, Attributable to Noncontrolling Interest Award Timing MNPI Considered Award Timing MNPI Considered [Flag] Other long-term liabilities Increase (Decrease) in Other Noncurrent Liabilities Junior Lien Junior Lien [Member] COMPREHENSIVE INCOME ATTRIBUTABLE TO TUTOR PERINI CORPORATION Comprehensive Income (Loss), Net of Tax, Attributable to Parent Schedule of Other Current Assets Schedule of Other Current Assets [Table Text Block] Name Measure Name Fair Value, Due within one year Debt Securities, Available-for-Sale, Fair Value, Maturity, Allocated and Single Maturity Date, Year One Letters of Credit Letter of Credit [Member] Distributions paid to noncontrolling interests Payments to Noncontrolling Interests Current lease liabilities Operating Lease, Liability, Current Secured Debt Secured Debt [Member] Document Fiscal Period Focus Document Fiscal Period Focus Unsecured Debt Unsecured Debt [Member] Contract Assets and Liabilities Contract With Customer Asset And Liability [Text Block] Contract With Customer Asset And Liability [Text Block] Award Timing Method Award Timing Method [Text Block] Litigation Case [Domain] Litigation Case [Domain] Pre-tax accrual, impact from jury verdict Pre-tax Accrual, Impact From Jury Verdict Pre-tax Accrual, Impact From Jury Verdict Amortized Cost Debt Securities, Available-for-Sale, Amortized Cost, Excluding Accrued Interest, after Allowance for Credit Loss Award Type [Axis] Award Type [Axis] Foreign Currency Translation Accumulated Foreign Currency Adjustment Attributable to Parent [Member] Total debt Long-Term Debt Schedule of Components of Other Comprehensive Income (Loss) and Related Tax Effects Comprehensive Income (Loss) [Table Text Block] Legal Entity [Axis] Legal Entity [Axis] Seattle Tunnel Partners Seattle Tunnel Partners [Member] Seattle Tunnel Partners Equipment financing and mortgages Equipment Financing And Mortgages [Member] Equipment Financing And Mortgages [Member] TOTAL ASSETS Total assets Assets Investment, Name [Domain] Investment, Name [Domain] Cash and cash equivalents maturity period (maximum) Cash And Cash Equivalents Maturity Term Cash And Cash Equivalents Maturity Term 2027 Finite-Lived Intangible Asset, Expected Amortization, Year One Trading Symbol Trading Symbol 2030 Lessee, Operating Lease, Liability, to be Paid, Year Four Element Hotel Element Hotel [Member] Element Hotel Geographical [Domain] Geographical [Domain] Entity Address, City or Town Entity Address, City or Town Cash Flows from Operating Activities: Cash Provided by (Used in) Operating Activity, Including Discontinued Operation [Abstract] Liabilities recognized for restricted stock grants Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Units With Guaranteed Minimum Payouts Outstanding, Recognized Liabilities Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Units With Guaranteed Minimum Payouts Outstanding, Recognized Liabilities Concentration Risk Type [Axis] Concentration Risk Type [Axis] Non-PEO NEO Average Compensation Actually Paid Amount Non-PEO NEO Average Compensation Actually Paid Amount Restricted Stock Units Restricted Stock Units (RSUs) [Member] Compensation Actually Paid vs. Other Measure Compensation Actually Paid vs. Other Measure [Text Block] Restricted cash Restricted Cash Fair Value Disclosure Restricted Cash Fair Value Disclosure Assets: Assets, Fair Value Disclosure [Abstract] Variable Interest Entity [Line Items] Variable Interest Entity [Line Items] 2030 Finite-Lived Intangible Asset, Expected Amortization, Year Four Entity Emerging Growth Company Entity Emerging Growth Company Dividend declared (in dollars per share) Common Stock, Dividends, Per Share, Declared Entity Common Stock, Shares Outstanding Entity Common Stock, Shares Outstanding Capitalized contract costs Capitalized Contract Cost, Net Right-of-use assets obtained in exchange for lease liabilities Right-of-Use Asset Obtained in Exchange for Operating Lease Liability Change in Fair Value as of Vesting Date of Prior Year Equity Awards Vested in Covered Year Change in Fair Value as of Vesting Date of Prior Year Equity Awards Vested in Covered Year [Member] Level 2 Fair Value, Inputs, Level 2 [Member] Unamortized debt issuance costs Debt Issuance Costs, Net Litigation Against Developer Litigation Against Developer [Member] Litigation Against Developer Insider Trading Policies and Procedures Not Adopted Insider Trading Policies and Procedures Not Adopted [Text Block] Carrying Value Indefinite-Lived Intangible Assets (Excluding Goodwill) Basis of Presentation Basis of Accounting [Text Block] Related Party Related Party [Member] Common stock, shares outstanding (in shares) Common Stock, Shares, Outstanding BMO Harris Bank BMO Harris Bank [Member] BMO Harris Bank PEO PEO [Member] Pending claims, number Loss Contingency, Pending Claims, Number Schedule of Disaggregation of Revenue and Revenue by Contract Type Disaggregation of Revenue [Table Text Block] Number of stories in tower Number Of Stories In Tower Number Of Stories In Tower Schedule of Investments Classified by Contractual Maturity Date Investments Classified by Contractual Maturity Date [Table Text Block] United States UNITED STATES Dividends or Other Earnings Paid on Equity Awards not Otherwise Reflected in Total Compensation for Covered Year Dividends or Other Earnings Paid on Equity Awards not Otherwise Reflected in Total Compensation for Covered Year [Member] Education facilities Education Facilities [Member] Education Facilities [Member] Retained Earnings Retained Earnings [Member] Net leverage ratio (maximum) Net Leverage Ratio (Maximum) Net Leverage Ratio (Maximum) Effective interest rates Debt Instrument, Interest Rate, Effective Percentage Entity Address, Postal Zip Code Entity Address, Postal Zip Code Restatement Determination Date Restatement Determination Date Share-based Payment Arrangement [Abstract] Share-Based Payment Arrangement [Abstract] Cash, cash equivalents and restricted cash at beginning of period Cash, cash equivalents and restricted cash at end of period Total cash, cash equivalents and restricted cash Cash, Cash Equivalent, Restricted Cash, and Restricted Cash Equivalent, Continuing Operation Income Statement [Abstract] Income Statement [Abstract] Income tax expense Income tax expense (benefit) Income Tax Expense (Benefit) 12 Months or Greater, Fair Value Debt Securities, Available-for-Sale, Continuous Unrealized Loss Position, 12 Months or Longer Basis spread on variable rate Debt Instrument, Basis Spread on Variable Rate Investments in securities Payments to Acquire Marketable Securities Sale of Stock [Domain] Sale of Stock [Domain] Issuance of common stock, net Issuance of Common Stock, Net Value of stock issued during the period as a result of any stock-based compensation plan other than an employee stock ownership plan (ESOP), net of the value of stock withheld by the company to cover an employee's income tax withholding obligation as part of a net-share settlement of a share-based award. Preferred stock, shares issued (in shares) Preferred Stock, Shares Issued INTANGIBLE ASSETS, NET Carrying Value Intangible Assets, Net (Excluding Goodwill) Pension Adjustments Service Cost Pension Adjustments Service Cost [Member] Product and Service [Domain] Product and Service [Domain] Customer Concentration Risk Customer Concentration Risk [Member] Fair Value Hierarchy and NAV [Axis] Fair Value Hierarchy and NAV [Axis] Cash interest expense Interest Expense, Debt, Excluding Amortization Schedule of Intangible Assets Schedule of Finite and Indefinite Lived Intangible Assets [Table Text Block] Tabular disclosure of assets, excluding financial assets and goodwill, lacking physical substance with finite and infinite lives, by either major class or business segment. NET INCOME NET INCOME Net income Net Income (Loss), Including Portion Attributable to Noncontrolling Interest Restatement does not require Recovery Restatement Does Not Require Recovery [Text Block] Lease expense, gross Lease Cost Before Sublease Income Lease Cost Before Sublease Income Organization, Consolidation and Presentation of Financial Statements [Abstract] Organization, Consolidation and Presentation of Financial Statements [Abstract] Cost Intangible Assets Gross Sum of the cost of all intangible assets before amortization and impairment charges, excluding goodwill, as of the balance sheet date. Costs and estimated earnings in excess of billings: Billings in Excess of Cost [Abstract] Other indebtedness Notes Payable, Other Payables [Member] Alaskan Way Viaduct Matter Alaskan Way Viaduct Matter [Member] Alaskan Way Viaduct Matter [Member] Civil Civil [Member] The Civil segment specializes in public works construction and the repair, replacement and reconstruction of infrastructure, including highways, bridges, mass transit systems and water and wastewater treatment facilities. Compensation Actually Paid vs. Company Selected Measure Compensation Actually Paid vs. Company Selected Measure [Text Block] Current year activity Goodwill, Acquired During Period City Area Code City Area Code Award Timing, How MNPI Considered Award Timing, How MNPI Considered [Text Block] All Trading Arrangements All Trading Arrangements [Member] Equity Awards Adjustments, Footnote Equity Awards Adjustments, Footnote [Text Block] Total Shareholder Return Vs Peer Group Total Shareholder Return Vs Peer Group [Text Block] Redemption price (as a percent) Debt Instrument, Redemption Price, Percentage Accrued expenses and other current liabilities ($47,401 and $56,044 related to VIEs) Accrued expenses and other current liabilities Accrued Liabilities, Current Schedule Of Intangible Assets [Table] Schedule Of Intangible Assets [Table] Schedule Of Intangible Assets [Table] Unrealized loss in fair value of investment adjustments Accumulated Gain (Loss), Financial Liability, Fair Value Option, Attributable to Parent [Member] Commitments and Contingencies Disclosure [Abstract] Commitments and Contingencies Disclosure [Abstract] Schedule of Contract Assets and Liabilities Contract with Customer, Contract Asset, Contract Liability, and Receivable [Table Text Block] Cash Flows from Investing Activities: Cash Provided by (Used in) Investing Activity, Including Discontinued Operation [Abstract] General and administrative expenses General and administrative expenses General and Administrative Expense Pay vs Performance Disclosure Pay vs Performance Disclosure [Table] Costs for share-based payment arrangements, after tax, diluted (in dollars per share) Share Based Compensation Expense, After Tax, Per Share, Diluted Share Based Compensation Expense, After Tax, Per Share, Diluted NET CASH PROVIDED BY OPERATING ACTIVITIES Cash Provided by (Used in) Operating Activity, Including Discontinued Operation Fair Value Debt Securities, Available-for-Sale, Excluding Accrued Interest Debt Instrument, Step Feature [Domain] Debt Instrument, Step Feature [Domain] Debt Instrument, Step Feature Preferred stock, par value (in dollars per share) Preferred Stock, Par or Stated Value Per Share Revenues from External Customers and Long-Lived Assets [Line Items] Revenues from External Customers and Long-Lived Assets [Line Items] Recognized net actuarial losses Defined Benefit Plan, Amortization of Gain (Loss) Subsequent Event Subsequent Event [Member] Total lease expense Lease, Cost GOODWILL Balance at beginning of period Balance at end of period Goodwill Equity Valuation Assumption Difference, Footnote Equity Valuation Assumption Difference, Footnote [Text Block] Schedule of Components of Lease Expense Lease, Cost [Table Text Block] PEO Total Compensation Amount PEO Total Compensation Amount Long-term Debt, Type [Axis] Long-Term Debt, Type [Axis] Accumulated Amortization Intangible Assets Accumulated Amortization Sum of the accumulated amount of amortization of all intangible assets, excluding goodwill, as of the balance sheet date. Depreciation Depreciation Money Market Funds Money Market Funds [Member] Adjusted contract value Adjusted Contract Value Adjusted Contract Value Debt Instrument, Redemption, Period Three Debt Instrument, Redemption, Period Three [Member] Healthcare facilities Healthcare Facilities [Member] Health Care Facilities [Member] Claims Contracts Receivable, Claims and Uncertain Amounts 2026 Finite-Lived Intangible Asset, Expected Amortization, Remainder of Fiscal Year Equity Components [Axis] Equity Components [Axis] Foreign and U.S. territories Non-US [Member] Debt Instrument, Step Feature [Axis] Debt Instrument, Step Feature [Axis] Debt Instrument, Step Feature Customer One Customer One [Member] Customer One Less: Sublease income Sublease Income Non-Rule 10b5-1 Arrangement Adopted Non-Rule 10b5-1 Arrangement Adopted [Flag] Number of reportable segments Number of Reportable Segments Contract with Customer, Basis of Pricing [Axis] Contract with Customer, Basis of Pricing [Axis] AOCI Attributable to Noncontrolling Interest AOCI Attributable to Noncontrolling Interest [Member] Number of rooms Number Of Rooms Number Of Rooms Cash-Settled Performance Stock Units and Cash-Settled Restricted Stock Units Cash-Settled Performance Stock Units And Cash-Settled Restricted Stock Units [Member] Cash-Settled Performance Stock Units And Cash-Settled Restricted Stock Units Accumulated impairment as of December 31, 2025 Goodwill, Impaired, Accumulated Impairment Loss Variable Interest Entities (VIEs) Variable Interest Entity Disclosure [Text Block] Other Performance Measure, Amount Other Performance Measure, Amount Schedule of Reconciliation of Cash, Cash Equivalents and Restricted Cash Restrictions on Cash and Cash Equivalents [Table Text Block] Current maturities of long-term debt Less: Current maturities Debt, Current Entity Address, State or Province Entity Address, State or Province Specialty Contractors Specialty Contractors [Member] The Specialty Contractors segment specializes in plumbing, HVAC, electrical, mechanical, and pneumatically placed concrete for a full range of civil, building and management services construction projects in the industrial, commercial, hospitality and gaming, and transportation end markets, among others. Related Party [Domain] Related and Nonrelated Parties [Domain] Total current liabilities Liabilities, current Liabilities, Current Deferred Costs, Capitalized, Prepaid, and Other Assets Disclosure [Abstract] Intangible Assets [Line Items] Intangible Assets [Line Items] Intangible Assets Individual: Individual [Axis] Defined contribution plan, cost Defined Contribution Plan, Cost Other current assets ($122,878 and $145,473 related to VIEs) Other current assets Total other current assets Other Assets, Current Additional paid-in capital Additional Paid in Capital, Common Stock Entity [Domain] Entity [Domain] NET CASH USED IN INVESTING ACTIVITIES Cash Provided by (Used in) Investing Activity, Including Discontinued Operation Liquidated damages Loss Contingency, Liquidated Damages Loss Contingency, Liquidated Damages 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] Contributions from noncontrolling interests Noncontrolling Interest, Increase from Contributions From Noncontrolling Interest Holders Noncontrolling Interest, Increase from Contributions From Noncontrolling Interest Holders Contributions from noncontrolling interests Proceeds from Noncontrolling Interests Unamortized discount and debt issuance costs, non-current Debt Instrument Unamortized Discount (Premium) And Debt Issuance Costs, Non-Current Debt Instrument Unamortized Discount (Premium) And Debt Issuance Costs, Non-Current Document Fiscal Year Focus Document Fiscal Year Focus Lender Name [Axis] Lender Name [Axis] Right-of-use assets Operating Lease, Right-of-Use Asset Forgone Recovery, Explanation of Impracticability Forgone Recovery, Explanation of Impracticability [Text Block] Noncontrolling interest, ownership percentage by noncontrolling owners (as a percent) Subsidiary, Ownership Percentage, Noncontrolling Owner Pre-tax charge, impact from jury verdict Pre-tax Charge, Impact From Jury Verdict Pre-tax Charge, Impact From Jury Verdict Effective tax rate (as a percent) Effective Income Tax Rate Reconciliation, Percent Entity Interactive Data Current Entity Interactive Data Current Operating lease expense Operating Lease, Cost Lien Category [Domain] Lien Category [Domain] Change in debt discounts and deferred debt issuance costs Change In Debt Discounts And Deferred Debt Issuance Costs Change In Debt Discounts And Deferred Debt Issuance Costs Weighted average period over which unrecognized compensation cost is expected to be recognized (in years) Share-Based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Period for Recognition Loss Contingency, Nature [Domain] Loss Contingency, Nature [Domain] Mass transit (includes certain transportation and tunneling projects) Mass Transit [Member] Mass Transit [Member] Business Segments Segment Reporting Disclosure [Text Block] Schedule of Goodwill [Table] Goodwill [Table] Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] Disaggregation of Revenue [Table] Disaggregation of Revenue [Table] Lien Category [Axis] Lien Category [Axis] Attributable to Tutor Perini Corporation: Increase (Decrease) in Stockholders' Equity [Roll Forward] Debt Securities, Available-for-Sale, Unrealized Loss Position, Accumulated Loss [Abstract] Debt Securities, Available-for-Sale, Unrealized Loss Position, Accumulated Loss [Abstract] Ownership [Domain] Ownership [Domain] Schedule of Net Periodic Benefit Cost Schedule of Net Benefit Costs [Table Text Block] Compensation Actually Paid vs. Total Shareholder Return Compensation Actually Paid vs. Total Shareholder Return [Text Block] Other Comprehensive Income (Loss) Comprehensive Income (Loss) Note [Text Block] Customer Two Customer Two [Member] Customer Two Fair Value, Recurring and Nonrecurring [Table] Fair Value, Recurring and Nonrecurring [Table] Amortization of intangible assets Amortization expense Amortization of Intangible Assets Restricted cash Restricted cash Restricted Cash and Cash Equivalent, Current DEFERRED INCOME TAXES Deferred Income Tax Assets, Net Repurchase of common stock Stock Repurchased During Period, Value Capital expenditures Payments to Acquire Productive Assets Schedule of Changes in AOCI Balances by Component (After-Tax) Schedule of Accumulated Other Comprehensive Income (Loss) [Table Text Block] Contract with Customer, Asset and Liability [Abstract] Contract with Customer, Contract Asset, Contract Liability, and Receivable [Abstract] OTHER ASSETS ($15,638 and $13,202 related to VIEs) Other assets Other Assets, Noncurrent Customer [Domain] Customer [Domain] Entity Central Index Key Entity Central Index Key PEO Name PEO Name Schedule of Revenues from External Customers and Long-Lived Assets [Table] Schedule of Revenues from External Customers and Long-Lived Assets [Table] Prior Year End Fair Value of Equity Awards Granted in Any Prior Year that Fail to Meet Applicable Vesting Conditions During Covered Year Prior Year End Fair Value of Equity Awards Granted in Any Prior Year that Fail to Meet Applicable Vesting Conditions During Covered Year [Member] Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] Outstanding Aggregate Erroneous Compensation Amount Outstanding Aggregate Erroneous Compensation Amount Fixed price Fixed-Price Contract [Member] Schedule of Stockholders Equity Schedule of Stockholders Equity [Table Text Block] Revolver Revolving Credit Facility [Member] Arrangement Duration Trading Arrangement Duration Schedule of Segment Reporting Information, by Segment [Table] Schedule of Segment Reporting Information, by Segment [Table] Billings in excess of costs and estimated earnings ($474,941 and $520,455 related to VIEs) Billings in excess of costs and estimated earnings Contract with Customer, Liability, Current Ownership joint venture (as a percent) Ownership Percentage in Joint Venture Percentage represents the Company's ownership percentage in the joint venture. Segments [Axis] Segments [Axis] Schedule of Supplemental Balance Sheet Information Related to Leases and Supplemental Cash Flow and Other Information Related to Leases Supplemental Financial Statement Information Related To Leases [Table Text Block] Supplemental Financial Statement Information Related To Leases [Table Text Block] Exercise Price Award Exercise Price Entity Filer Category Entity Filer Category Local Phone Number Local Phone Number Additional 402(v) Disclosure Additional 402(v) Disclosure [Text Block] Subsequent Event Type [Axis] Subsequent Event Type [Axis] Share-Based Compensation Share-Based Payment Arrangement [Text Block] ASSETS Assets [Abstract] LONG-TERM DEBT, less current maturities, net of unamortized discount and debt issuance costs totaling $16,897 and $17,983 Long-term debt, net Long-Term Debt, Excluding Current Maturities Credit Facility [Axis] Credit Facility [Axis] Underlying Security Market Price Change Underlying Security Market Price Change, Percent 2029 Finite-Lived Intangible Asset, Expected Amortization, Year Three Summary of net periodic benefit cost Defined Benefit Plan, Net Periodic Benefit Cost (Credit) [Abstract] Debt Instrument [Axis] Debt Instrument [Axis] Fair Value Measurements Fair Value Disclosures [Text Block] Employee Pension Plans Retirement Benefits [Text Block] Credit Facility [Domain] Credit Facility [Domain] Cost Finite-Lived Intangible Assets, Gross Stockholders' equity: Equity, Attributable to Parent [Abstract] 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] Entity Address, Address Line One Entity Address, Address Line One Repurchase of common stock Treasury Stock, Value, Acquired, Cost Method Accumulated Other Comprehensive Loss Total other comprehensive income (loss) attributable to Tutor Perini Corporation Accumulated Other Comprehensive Income (Loss) AOCI Attributable to Parent [Member] Investment, Name [Axis] Investment, Name [Axis] Interest rate (as a percent) Debt Instrument, Interest Rate, Stated Percentage Long-term lease liabilities Operating Lease, Liability, Noncurrent Foreign Currency Translation Accumulated Foreign Currency Adjustment Attributable to Noncontrolling Interest [Member] Ownership [Axis] Ownership [Axis] Amortized Cost, Due after five years Debt Securities, Available-for-Sale, Amortized Cost, Maturity, Allocated and Single Maturity Date, after Year 5 Debt Securities, Available-for-Sale, Amortized Cost, Maturity, Allocated and Single Maturity Date, after Year 5 Defined benefit pension plan adjustments Accumulated Defined Benefit Plans Adjustment Including Portion Attributable to Noncontrolling Interest [Member] Fair Value as of Grant Date Award Grant Date Fair Value Total non-cash interest expense Interest Expense, Non-Cash Interest Expense, Non-Cash Entity Registrant Name Entity Registrant Name Costs for share-based payment arrangements, after tax Share Based Compensation Expense, After Tax Share Based Compensation Expense, After Tax Stock Price or TSR Estimation Method Stock Price or TSR Estimation Method [Text Block] Municipal bonds Municipal Bonds [Member] Net periodic benefit cost Defined Benefit Plan, Net Periodic Benefit Cost (Credit) Other interest Interest Expense, Other Schedule of Reconciliation of Outstanding Debt Balance to Reported Debt Balance Reconciliation Of Outstanding Debt Balance To Reported Debt Balance [Table Text Block] Reconciliation Of Outstanding Debt Balance To Reported Debt Balance [Table Text Block] Schedule of Long-Term Debt Schedule of Long-Term Debt Instruments [Table Text Block] Units granted (in shares) Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Grants in Period Unamortized share-based compensation expense Share-Based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Amount Debt Instrument, Redemption, Period Two Debt Instrument, Redemption, Period Two [Member] Document Quarterly Report Document Quarterly Report Less than 12 Months, Fair Value Debt Securities, Available-for-Sale, Continuous Unrealized Loss Position, Less than 12 Months Total Assets, Fair Value Disclosure Schedule of Reconciliation of Segment Results to Consolidated Income (Loss) Before Income Taxes Segment, Reconciliation of Other Items from Segments to Consolidated [Table Text Block] Long-term debt, fair value Long-Term Debt, Fair Value Changed Peer Group, Footnote Changed Peer Group, Footnote [Text Block] Counterparty Name [Domain] Counterparty Name [Domain] Construction contract backlog Construction Contract Backlog [Member] Entity's established relationships with its customers through contracts in backlog. 2028 Lessee, Operating Lease, Liability, to be Paid, Year Two Adjustment To PEO Compensation, Footnote Adjustment To PEO Compensation, Footnote [Text Block] New Accounting Pronouncements and Changes in Accounting Principles [Abstract] Accounting Standards Update and Change in Accounting Principle [Abstract] Interest cost Defined Benefit Plan, Interest Cost Weighted-average fair values per share (in dollars per share) Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Grants in Period, Weighted Average Grant Date Fair Value Increase (decrease) in line of credit Line of Credit Facility, Increase (Decrease), Net Related Party [Axis] Related and Nonrelated Parties [Axis] Title Trading Arrangement, Individual Title Peer Group Total Shareholder Return Amount Peer Group Total Shareholder Return Amount Restatement Determination Date: Restatement Determination Date [Axis] Unrealized gain (loss) in fair value of investments Accumulated Gain (Loss), Financial Liability, Fair Value Option, Including Portion Attributable to Noncontrolling Interest [Member] Non-PEO NEO Non-PEO NEO [Member] Accumulated Other Comprehensive Income (Loss) [Table] Accumulated Other Comprehensive Income (Loss) [Table] Tutor Perini Building Corp Tutor Perini Building Corp [Member] Tutor Perini Building Corp Accumulated Other Comprehensive Income (Loss) [Line Items] Accumulated Other Comprehensive Income (Loss) [Line Items] Amounts reclassified from AOCI Reclassification from Accumulated Other Comprehensive Income, Current Period, Net of Tax Sale of Stock [Axis] Sale of Stock [Axis] Unrealized Gains Debt Securities, Available-for-Sale, Accumulated Gross Unrealized Gain, before Tax Name Trading Arrangement, Individual Name Equity Award [Domain] Award Type [Domain] 2027 Lessee, Operating Lease, Liability, to be Paid, Year One Contract with Customer, Basis of Pricing [Domain] Contract with Customer, Basis of Pricing [Domain] Noncontrolling interests Equity, Attributable to Noncontrolling Interest Equity Awards Adjustments Equity Awards Adjustments [Member] Other, net Other Noncash Income (Expense) Pension Benefits Adjustments, Footnote Pension Benefits Adjustments, Footnote [Text Block] Disaggregation of Revenue [Line Items] Disaggregation of Revenue [Line Items] Compensation Amount Outstanding Recovery Compensation Amount Face amount Debt Instrument, Face Amount State and local agencies State And Local Agencies [Member] State And Local Agencies [Member] Debt Instrument, Name [Domain] Debt Instrument, Name [Domain] Statement of Comprehensive Income [Abstract] Statement of Comprehensive Income [Abstract] Corporate certificates of deposit Certificates of Deposit [Member] Recovery of Erroneously Awarded Compensation Disclosure [Line Items] Revenue recognized Contract with Customer, Liability, Revenue Recognized Cash-settled Service-Based Units Cash-Settled Service-Based Units [Member] Cash-Settled Service-Based Units MNPI Disclosure Timed for Compensation Value MNPI Disclosure Timed for Compensation Value [Flag] Amortized Cost, Due after one year through five years Debt Securities, Available-for-Sale, Amortized Cost, Maturity, Allocated and Single Maturity Date, after Year One Through Five Name Awards Close in Time to MNPI Disclosures, Individual Name Attributable to Tutor Perini Corporation: AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax [Roll Forward] Aggregate Erroneous Compensation Not Yet Determined Aggregate Erroneous Compensation Not Yet Determined [Text Block] Defined Benefit Pension Plan Accumulated Defined Benefit Plans Adjustment Attributable to Noncontrolling Interest [Member] Fiscal Quarter December 31, 2023 Fiscal Quarter December 31, 2023 [Member] Fiscal Quarter December 31, 2023 Share-based compensation APIC, Share-Based Payment Arrangement, Increase for Cost Recognition Accumulated other comprehensive loss Accumulated Other Comprehensive Income (Loss), Net of Tax Gross goodwill as of December 31, 2025 Goodwill, Gross Variable Interest Entities [Abstract] Variable Interest Entities [Abstract] Variable Interest Entities [Abstract] Fair Value, Due after five years Debt Securities, Available-for-Sale, Fair Value, Maturity, Allocated and Single Maturity Date, after Year 5 Debt Securities, Available-for-Sale, Fair Value, Maturity, Allocated and Single Maturity Date, after Year 5 Major Types of Debt and Equity Securities [Domain] Financial Instruments [Domain] Litigation Case [Axis] Litigation Case [Axis] Building and Specialty Contractors Building And Specialty Contractors [Member] Building And Specialty Contractors [Member] Segments [Domain] Segments [Domain] Value of claim filed Loss Contingency, Damages Sought, Value Assets, noncurrent Assets, Noncurrent Remaining borrowing capacity Line of Credit Facility, Remaining Borrowing Capacity Schedule of Cash and Cash Equivalents [Table] Cash and Cash Equivalent [Table] Accumulated Other Comprehensive Income (Loss), Net of Tax [Abstract] Accumulated Other Comprehensive Income (Loss), Net of Tax [Abstract] Aggregate Pension Adjustments Service Cost Aggregate Pension Adjustments Service Cost [Member] Fair Value Hierarchy [Domain] Fair Value Hierarchy and NAV [Domain] Manhattan Jail Project Manhattan Jail Project [Member] Manhattan Jail Project Amortization of debt issuance costs and discounts Amortization of Debt Issuance Costs and Discounts Restricted investments: Restricted Investments [Member] Restricted Investments Finite-Lived Intangible Assets by Major Class [Axis] Finite-Lived Intangible Assets by Major Class [Axis] Minimum Minimum [Member] Unrealized Gain (Loss) in Fair Value of Investments, Net AOCI, Accumulated Gain (Loss), Debt Securities, Available-for-Sale, Parent [Member] Total net leverage ratio (maximum) Total Net Leverage Ratio (Maximum) Total Net Leverage Ratio (Maximum) Accumulated depreciation Accumulated Depreciation, Depletion and Amortization, Property, Plant, and Equipment Government Government1 [Member] Government1 Company Selected Measure Name Company Selected Measure Name Costs and estimated earnings in excess of billings Costs And Estimated Earnings In Excess Of Billings Costs And Estimated Earnings In Excess Of Billings 2024 Senior Notes Senior Notes [Member] Financial Commitments Debt Disclosure [Text Block] Preferred stock - authorized 1,000,000 shares ($1 par value), none issued Preferred Stock, Value, Issued Aggregate Available Trading Arrangement, Securities Aggregate Available Amount Accounts payable ($111,805 and $64,712 related to VIEs) Accounts payable Accounts Payable, Current Debt Securities, Available-for-Sale, Maturity, Allocated and Single Maturity Date, Fair Value [Abstract] Debt Securities, Available-for-Sale, Maturity, Allocated and Single Maturity Date, Fair Value [Abstract] Cash paid for amounts included in the measurement of lease liabilities Operating Lease, Payments Stock Appreciation Rights (SARs) Stock Appreciation Rights (SARs) [Member] Total other comprehensive income (loss), Before-Tax Amount Other Comprehensive Income (Loss), before Tax Accrued dividends Dividends Payable Multi-unit residential Multi Unit Residential [Member] Multi-Unit Residential [Member] All Executive Categories All Executive Categories [Member] Investments in lieu of retention: Investments In Lieu of Retention [Member] Investments In Lieu of Retention Impairment of intangible assets Impairment of Intangible Assets (Excluding Goodwill) Stockholders' Equity Note [Abstract] Stockholders' Equity Note [Abstract] Common stock - authorized 112,500,000 shares ($1 par value), issued and outstanding 52,614,703 and 52,791,451 shares Common Stock, Value, Issued Unit price Unit Price [Member] Unit Price [Member] Goodwill [Roll Forward] Goodwill [Roll Forward] Principal Geographical Areas Information Segments, Geographical Areas [Abstract] Number of contracts Number Of Contracts Number Of Contracts Commitments and Contingencies Commitments and Contingencies Disclosure [Text Block] DILUTED (in shares) Weighted-average common shares outstanding, diluted (in shares) Weighted Average Number of Shares Outstanding, Diluted First Lien First Lien [Member] First Lien COMMITMENTS AND CONTINGENCIES (NOTE 12) Commitments and Contingencies Non-GAAP Measure Description Non-GAAP Measure Description [Text Block] COMPREHENSIVE INCOME Comprehensive Income (Loss), Net of Tax, Including Portion Attributable to Noncontrolling Interest Entity Small Business Entity Small Business Schedule of Revenue from External Customers by Geographic Areas Revenue from External Customers by Geographic Areas [Table Text Block] Income Tax Disclosure [Abstract] Income Tax Disclosure [Abstract] Noncontrolling Interests Less: Other comprehensive income (loss) attributable to noncontrolling interests Noncontrolling Interest [Member] Loss contingency, loss in period Loss Contingency, Loss in Period Document Transition Report Document Transition Report Detention facilities Detention Facilities [Member] Detention Facilities Fair Value, Due after one year through five years Debt Securities, Available-for-Sale, Fair Value, Maturity, Allocated and Single Maturity Date, after Year One Through Five Operating Lease, Right-of-Use Asset, Statement of Financial Position [Extensible List] Operating Lease, Right-of-Use Asset, Statement of Financial Position [Extensible Enumeration] Recent Accounting Pronouncements Accounting Standards Update and Change in Accounting Principle [Text Block] Underlying Securities Award Underlying Securities Amount Restricted investments Restricted Investments, at Fair Value Other Other [Member] Other Equity Component [Domain] Equity Component [Domain] Document Period End Date Document Period End Date PEO Actually Paid Compensation Amount PEO Actually Paid Compensation Amount Cash and Cash Equivalents [Domain] Cash and Cash Equivalents [Domain] Income Taxes Income Tax Disclosure [Text Block] Awards Close in Time to MNPI Disclosures, Table Awards Close in Time to MNPI Disclosures [Table Text Block] Revenue from Contract with Customer [Abstract] Revenue from Contract with Customer [Abstract] Short-term lease expense Short-Term Lease, Cost Operating Lease, Liability, Noncurrent, Statement of Financial Position [Extensible List] Operating Lease, Liability, Noncurrent, Statement of Financial Position [Extensible Enumeration] TOTAL EQUITY Balance at the beginning of the period Balance at the end of the period Equity, Including Portion Attributable to Noncontrolling Interest Average cost per share (in shares) Shares Acquired, Average Cost Per Share Document Type Document Type Level 3 Fair Value, Inputs, Level 3 [Member] Schedule of Total Assets for Reportable Segments Reconciliation of Assets from Segment to Consolidated [Table Text Block] Earnings Per Common Share Earnings Per Share [Text Block] Name Outstanding Recovery, Individual Name Loss Contingencies [Table] Loss Contingencies [Table] Commercial and industrial facilities Commercial And Industrial Facilities [Member] Commercial And Industrial Facilities Defined benefit pension plan adjustments Other Comprehensive (Income) Loss, Defined Benefit Plan, after Reclassification Adjustment, after Tax Product and Service [Axis] Product and Service [Axis] REVENUE Revenue Revenue from Contract with Customer, Excluding Assessed Tax Military facilities Military Facilities [Member] Military Defense Facilities [Member] All Individuals All Individuals [Member] Long-term Debt, Type [Domain] Long-Term Debt, Type [Domain] Fair Value Disclosures [Abstract] Fair Value Disclosures [Abstract] Acquisition of property and equipment Payments to Acquire Property, Plant, and Equipment Name Forgone Recovery, Individual Name Total current assets Assets, current Assets, Current Statistical Measurement [Axis] Statistical Measurement [Axis] Year-over-Year Change in Fair Value of Equity Awards Granted in Prior Years That are Outstanding and Unvested Year-over-Year Change in Fair Value of Equity Awards Granted in Prior Years That are Outstanding and Unvested [Member] Total cash interest expense Interest Expense, Cash Interest Expense, Cash Reclassification out of Accumulated Other Comprehensive Income Reclassification out of Accumulated Other Comprehensive Income [Member] Value of counterclaim filed in excess of Value Of Counterclaim Filed In Excess Of The value (monetary amount) of the counterclaim filed in the legal matter. Share repurchase program, authorized amount Share Repurchase Program, Authorized, Amount Loss contingency accrual Loss Contingency Accrual Debt instrument, basis spread on variable rate adjustment Debt Instrument, Basis Spread on Variable Rate Adjustment Debt Instrument, Basis Spread on Variable Rate Adjustment Aggregate Erroneous Compensation Amount Aggregate Erroneous Compensation Amount Cash payments related to share-based compensation Payment, Tax Withholding, Share-Based Payment Arrangement Private Placement Private Placement [Member] Peer Group Issuers, Footnote Peer Group Issuers, Footnote [Text Block] Unrealized Gain (Loss) in Fair Value of Investments, Net AOCI, Accumulated Gain (Loss), Debt Securities, Available-for-Sale, Noncontrolling Interest [Member] Erroneous Compensation Analysis Erroneous Compensation Analysis [Text Block] CURRENT LIABILITIES: Liabilities, Current [Abstract] Thereafter Lessee, Operating Lease, Liability, To Be Paid, After Year Four Lessee, Operating Lease, Liability, To Be Paid, After Year Four Geographical [Axis] Geographical [Axis] Lessee, Lease, Description [Line Items] Lessee, Lease, Description [Line Items] Changes in other components of working capital Increase (Decrease) in Other Operating Assets and Liabilities, Net Rule 10b5-1 Arrangement Terminated Rule 10b5-1 Arrangement Terminated [Flag] Level 1 Fair Value, Inputs, Level 1 [Member] DILUTED EARNINGS (LOSS) PER COMMON SHARE (in dollars per share) Diluted (in dollars per share) Earnings Per Share, Diluted Erroneously Awarded Compensation Recovery Erroneously Awarded Compensation Recovery [Table] Cost plus fee and other Cost Plus Fee And Other [Member] Cost Plus Fee And Other [Member] Concentration Risk Benchmark [Domain] Concentration Risk Benchmark [Domain] Reclassification out of Accumulated Other Comprehensive Income [Axis] Reclassification out of Accumulated Other Comprehensive Income [Axis] Title of 12(b) Security Title of 12(b) Security Lessee, Lease, Description [Table] Lessee, Lease, Description [Table] Number of plaintiffs Loss Contingency, Number of Plaintiffs Excise tax, payable Share Repurchase Program, Excise Tax, Payable Capitalized contract cost, amortization Capitalized Contract Cost, Amortization OTHER COMPREHENSIVE INCOME (LOSS), NET OF TAX: Other Comprehensive Income (Loss), Net of Tax, Portion Attributable to Parent [Abstract] Liquidated damages, period beyond Loss Contingency, Liquidated Damages For Period Extending Beyond Loss Contingency, Liquidated Damages For Period Extending Beyond Earnings Per Share [Abstract] Earnings Per Share [Abstract] Consolidation Items [Domain] Consolidation Items [Domain] Variable Interest Entity, Not Primary Beneficiary Variable Interest Entity, Not Primary Beneficiary [Member] GROSS PROFIT Gross Profit Schedule of Interest Expense as Reported in the Consolidated Statements of Income Interest Income and Interest Expense Disclosure [Table Text Block] Civil, Building, And Specialty Contractors Civil, Building, And Specialty Contractors [Member] Civil, Building, And Specialty Contractors Loss contingency, after tax, diluted (in dollars per share) Loss Contingency, Loss In Period, After Tax, Per Share, Diluted Loss Contingency, Loss In Period, After Tax, Per Share, Diluted Restricted investments Restricted Investments, Current Less: Imputed interest Lessee, Operating Lease, Liability, Undiscounted Excess Amount Cash and Cash Equivalents [Line Items] Cash and Cash Equivalents [Line Items] 2028 Finite-Lived Intangible Asset, Expected Amortization, Year Two Award Timing Disclosures [Line Items] Guaranteed maximum price Guaranteed Maximum Price [Member] Guaranteed Maximum Price[Member] Service cost Defined Benefit Plan, Service Cost Outstanding Debt Long-Term Debt, Gross Total lease payments Lessee, Operating Lease, Liability, to be Paid Unrealized gain (loss) in fair value of investments OCI, Debt Securities, Available-for-Sale, Unrealized Holding Gain (Loss), before Adjustment, after Tax Other comprehensive loss before reclassifications Other Comprehensive Income (Loss), before Reclassifications, Net of Tax Changes in Equity Equity [Text Block] Distributions to noncontrolling interests Noncontrolling Interest, Decrease from Distributions to Noncontrolling Interest Holders Trade Names Trade Names [Member] NET INCOME ATTRIBUTABLE TO TUTOR PERINI CORPORATION Net income attributable to Tutor Perini Corporation Net of tax Net Income (Loss) Attributable to Parent Intersegment Eliminations Intersegment Eliminations [Member] Schedule of Debt Securities, Available-for-Sale, Unrealized Loss Position, Fair Value Debt Securities, Available-for-Sale, Unrealized Loss Position, Fair Value [Table Text Block] Expiration Date Trading Arrangement Expiration Date Percent interest in the joint venture (as a percent) Variable Interest Entity, Qualitative or Quantitative Information, Ownership Percentage Power and energy Power and Energy [Member] Power and Energy Total intangible assets Total Intangible Assets [Abstract] 2031 Finite-Lived Intangible Asset, Expected Amortization, Year Five Other Current Assets Other Current Assets [Text Block] PROPERTY AND EQUIPMENT (“P&E”), net of accumulated depreciation of $579,268 and $570,186 (net P&E of $21,945 and $23,246 related to VIEs) Property and equipment, net Property, Plant and Equipment, Net Segment Reporting Information [Line Items] Segment Reporting Information [Line Items] Preferred stock, shares authorized (in shares) Preferred Stock, Shares Authorized Repurchase of common stock Payments for Repurchase of Common Stock Adoption Date Trading Arrangement Adoption Date Base Rate Base Rate [Member] Compensation Actually Paid vs. Net Income Compensation Actually Paid vs. Net Income [Text Block] 2020 Credit Agreement Credit Agreement 2020 [Member] Credit Agreement 2020 Entity Current Reporting Status Entity Current Reporting Status Operating lease, remaining lease terms (in years) Lessee, Operating Lease, Term of Contract Retention receivable ($216,422 and $216,099 related to VIEs) Retention receivable Construction Contractor, Receivable, Retainage Investments in lieu of retention Investments in Lieu of Retainage Fair Value Disclosure This element represents the portion of the balance sheet assertion valued at fair value by the entity whether such amount is presented as a separate caption or as a parenthetical disclosure. Additionally, this element may be used in connection with the fair value disclosures required in the footnote disclosures to the financial statements. The element may be used in both the balance sheet and disclosure in the same submission. This item includes investments in lieu of retainage which are classified as Account Receivables and are comprised of U.S. Treasury Notes and other municipal bonds. Customer [Axis] Customer [Axis] Awards Close in Time to MNPI Disclosures Awards Close in Time to MNPI Disclosures [Table] Customer relationships Customer Relationships [Member] INCOME FROM CONSTRUCTION OPERATIONS Income (loss) from construction operations Operating Income (Loss) Line of Credit Line of Credit [Member] Consolidated Entities [Domain] Consolidated Entities [Domain] Amortized Cost, Due within one year Debt Securities, Available-for-Sale, Amortized Cost, Maturity, Allocated and Single Maturity Date, Year One Cash used to settle liabilities Share-Based Payment Arrangement, Cash Used to Settle Award Retained earnings Retained Earnings (Accumulated Deficit) (Gain) loss on sale of property and equipment Gain (Loss) on Disposition of Property Plant Equipment Foreign currency translation adjustments Accumulated Foreign Currency Adjustment Including Portion Attributable to Noncontrolling Interest [Member] Financial Instrument [Axis] Financial Instrument [Axis] Statement of Financial Position [Abstract] Statement of Financial Position [Abstract] Year-end Fair Value of Equity Awards Granted in Covered Year that are Outstanding and Unvested Year-end Fair Value of Equity Awards Granted in Covered Year that are Outstanding and Unvested [Member] Executive Category: Executive Category [Axis] 12 Months or Greater, Unrealized Losses Debt Securities, Available-for-Sale, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss Repayment of debt Repayments of debt Repayments of Debt Current Fiscal Year End Date Current Fiscal Year End Date Less than 12 Months, Unrealized Losses Debt Securities, Available-for-Sale, Continuous Unrealized Loss Position, Less than 12 Months, Accumulated Loss Subsequent Event Type [Domain] Subsequent Event Type [Domain] Finite-Lived intangible assets Finite-Lived Intangible Assets, Net [Abstract] Finite-Lived Intangible Assets, Major Class Name [Domain] Finite-Lived Intangible Assets, Major Class Name [Domain] Building Building Group [Member] The Building segment has significant experience providing services to a number of specialized building markets for private and public works clients, including the hospitality and gaming, transportation, healthcare, municipal offices, sports and entertainment, education, correctional facilities, biotech, pharmaceutical, industrial and high-tech markets. Aggregate Grant Date Fair Value of Equity Award Amounts Reported in Summary Compensation Table Aggregate Grant Date Fair Value of Equity Award Amounts Reported in Summary Compensation Table [Member] Short term lease, lease term (in years) Short Term Lease, Lease Term Short Term Lease, Lease Term Statement [Table] Statement [Table] Other income, net Defined benefit pension plan adjustments Other Nonoperating Income (Expense) Adjustments to reconcile net income to net cash provided by operating activities: Adjustment to Reconcile Net Income to Cash Provided by (Used in) Operating Activity [Abstract] Cash Flows from Financing Activities: Cash Provided by (Used in) Financing Activity, Including Discontinued Operation [Abstract] Reclassification out of Accumulated Other Comprehensive Income [Domain] Reclassification out of Accumulated Other Comprehensive Income [Domain] Equity Awards Adjustments, Excluding Value Reported in Compensation Table Equity Awards Adjustments, Excluding Value Reported in the Compensation Table [Member] Revenue Benchmark Revenue Benchmark [Member] Applicable margin on overdue amounts (as a percent) Debt Instrument, Debt Default, Increase in Applicable Margin On Overdue Amounts Upon Default Debt Instrument, Debt Default, Increase in Applicable Margin On Overdue Amounts Upon Default Accounts receivable ($187,977 and $126,245 related to VIEs) Accounts receivable Receivables, Net, Current Total, Unrealized Losses Debt Securities, Available-for-Sale, Unrealized Loss Position, Accumulated Loss Variable Rate [Domain] Variable Rate [Domain] Schedule of Assets and Liabilities Measured at Fair Value on Recurring Basis Schedule of Fair Value, Assets and Liabilities Measured on Recurring Basis [Table Text Block] Proceeds from maturities and sales of investments in securities Proceeds from Sale and Maturity of Marketable Securities Cash and Cash Equivalents [Abstract] Cash and Cash Equivalents [Abstract] Anti-dilutive securities not included above (in shares) Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount WEIGHTED-AVERAGE COMMON SHARES OUTSTANDING: Weighted Average Number of Shares Outstanding, Diluted [Abstract] All Adjustments to Compensation All Adjustments to Compensation [Member] Fair Value, by Balance Sheet Grouping [Table] Fair Value, by Balance Sheet Grouping [Table] Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Table] Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Table] Amendment Flag Amendment Flag Number of shares authorized for grant (in shares) Share-Based Compensation Arrangement by Share-Based Payment Award, Number of Shares Authorized Loss contingency, loss in period, attributable to company Loss Contingency, Loss In Period, Attributable To Company Loss Contingency, Loss In Period, Attributable To Company Accumulated Impairment Charge Indefinite Lived Intangible Assets Excluding Goodwill Accumulated Impairment Charge Accumulated amount of impairment loss of assets, (excluding financial assets) that lack physical substance, excluding goodwill, having a projected indefinite period of benefit. Leases Lessee, Operating Leases [Text Block] Termination Date Trading Arrangement Termination Date NET CASH USED IN FINANCING ACTIVITIES Cash Provided by (Used in) Financing Activity, Including Discontinued Operation Insider Trading Policies and Procedures Adopted Insider Trading Policies and Procedures Adopted [Flag] Measure: Measure [Axis] Weighted-average discount rate Operating Lease, Weighted Average Discount Rate, Percent BASIC (in shares) Weighted-average common shares outstanding, basic (in shares) Weighted Average Number of Shares Outstanding, Basic Indefinite-lived intangible assets Indefinite-Lived Intangible Assets (Excluding Goodwill) [Abstract] Cash and cash equivalents available for general corporate purposes Consolidated Entity Excluding Joint Venture [Member] Consolidated Entity, Excluding Joint Venture [Member] COST OF OPERATIONS Cost of operations Cost of Product and Service Sold Schedule of Earnings Per Share, Basic and Diluted Schedule of Earnings Per Share, Basic and Diluted [Table Text Block] Segment Reporting [Abstract] Segment Reporting [Abstract] Pay vs Performance Disclosure, Table Pay vs Performance [Table Text Block] Debt Disclosure [Abstract] Debt Disclosure [Abstract] Forgone Recovery due to Violation of Home Country Law, Amount Forgone Recovery due to Violation of Home Country Law, Amount Entity Tax Identification Number Entity Tax Identification Number Cost Indefinite Lived Intangible Assets Excluding Goodwill Cost Cost of assets (excluding financial assets) that lack physical substance, excluding goodwill, having a projected indefinite period of benefit. Forgone Recovery due to Expense of Enforcement, Amount Forgone Recovery due to Expense of Enforcement, Amount Loss contingency, after tax Loss Contingency, Loss In Period, After Tax Loss Contingency, Loss In Period, After Tax Share-based Compensation Arrangement by Share-based Payment Award [Line Items] Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items] Common stock, par value (in dollars per share) Common Stock, Par or Stated Value Per Share Consolidated Entities [Axis] Consolidated Entities [Axis] Common stock, shares issued (in shares) Common Stock, Shares, Issued Cash, Cash Equivalents and Restricted Cash Cash and Cash Equivalents Disclosure [Text Block] Weighted-average remaining lease term Operating Lease, Weighted Average Remaining Lease Term Goodwill and Intangible Assets Goodwill and Intangible Assets Disclosure [Text Block] Payment of dividends Payments of Dividends Settlement on judgment, awarded to other party Litigation Settlement, Amount Awarded to Other Party Schedule of Changes in Carrying Amount of Goodwill Schedule of Goodwill [Table Text Block] Interest expense Total interest expense Interest Expense, Nonoperating Trading Arrangement: Trading Arrangement [Axis] Total Shareholder Return Amount Total Shareholder Return Amount Contingencies and Commitments Loss Contingencies [Line Items] Foreign currency translation adjustments Other Comprehensive Income (Loss), Foreign Currency Transaction and Translation Adjustment, Net of Tax Insider Trading Arrangements [Line Items] Corporate Corporate and other Segment Reporting, Reconciling Item, Corporate Nonsegment [Member] Security Exchange Name Security Exchange Name 2024 Senior Notes 2024 Senior Notes [Member] 2024 Senior Notes Liabilities, noncurrent Liabilities, Noncurrent TOTAL LIABILITIES Liabilities Pension Plan Assets Defined Benefit Plan, Information about Plan Assets [Abstract] Cash and Cash Equivalents [Axis] Cash and Cash Equivalents [Axis] Maximum borrowing capacity Line of Credit Facility, Maximum Borrowing Capacity Pension Adjustments Prior Service Cost Pension Adjustments Prior Service Cost [Member] Stock repurchased (in shares) Stock Repurchased During Period, Shares Indefinite-lived Intangible Assets, Major Class Name [Domain] Indefinite-Lived Intangible Assets, Major Class Name [Domain] Material Terms of Trading Arrangement Material Terms of Trading Arrangement [Text Block] Private owners Private Owners [Member] Private Owners [Member] Asset Class [Domain] Asset Class [Domain] Statement [Line Items] Statement [Line Items] Consolidation Items [Axis] Consolidation Items [Axis] O&G O And G Industries Inc [Member] Refers to a joint venture partner of the Company whose vice chairman is a related party to the Company as he is a director of the Company. Variable Rate [Axis] Variable Rate [Axis] Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items] Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items] Rule 10b5-1 Arrangement Adopted Rule 10b5-1 Arrangement Adopted [Flag] Cash and cash equivalents ($377,544 and $361,898 related to variable interest entities (“VIEs”)) Cash and cash equivalents Cash and Cash Equivalent Counterparty Name [Axis] Counterparty Name [Axis] Common Stock Common Stock [Member] Deferred income taxes Increase (Decrease) in Deferred Income Taxes Entity Incorporation, State or Country Code Entity Incorporation, State or Country Code Non-NEOs Non-NEOs [Member] Corporate debt securities Corporate Debt Securities [Member] Net increase (decrease) in cash, cash equivalents and restricted cash Cash, Cash Equivalent, Restricted Cash, and Restricted Cash Equivalent, Period Increase (Decrease), Including Exchange Rate Effect and Discontinued Operation Effect of dilutive RSUs and stock options (in shares) Weighted Average Number of Shares Outstanding, Diluted, Adjustment Remaining performance obligations revenue period (in years) Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Period Range Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Period Range