Revenue (Schedule of Revenue by Contract Type) (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2025	Jun. 30, 2024	Jun. 30, 2025	Jun. 30, 2024
Disaggregation of Revenue [Line Items]
Revenue	$ 1,373,681	$ 1,127,470	$ 2,620,314	$ 2,176,457
Fixed price
Disaggregation of Revenue [Line Items]
Revenue	950,853	775,218	1,842,525	1,507,587
Guaranteed maximum price
Disaggregation of Revenue [Line Items]
Revenue	246,960	191,668	488,115	379,637
Unit price
Disaggregation of Revenue [Line Items]
Revenue	111,078	95,593	165,785	149,992
Cost plus fee and other
Disaggregation of Revenue [Line Items]
Revenue	64,790	64,991	123,889	139,241
Civil
Disaggregation of Revenue [Line Items]
Revenue	734,187	546,488	1,344,228	1,018,653
Civil \| Fixed price
Disaggregation of Revenue [Line Items]
Revenue	628,757	452,823	1,185,134	875,543
Civil \| Guaranteed maximum price
Disaggregation of Revenue [Line Items]
Revenue	41	88	222	134
Civil \| Unit price
Disaggregation of Revenue [Line Items]
Revenue	91,214	75,313	129,231	109,167
Civil \| Cost plus fee and other
Disaggregation of Revenue [Line Items]
Revenue	14,175	18,264	29,641	33,809
Building
Disaggregation of Revenue [Line Items]
Revenue	462,082	417,866	921,866	829,808
Building \| Fixed price
Disaggregation of Revenue [Line Items]
Revenue	186,184	186,050	378,234	356,196
Building \| Guaranteed maximum price
Disaggregation of Revenue [Line Items]
Revenue	239,460	190,643	475,075	377,943
Building \| Unit price
Disaggregation of Revenue [Line Items]
Revenue	0	0	0	0
Building \| Cost plus fee and other
Disaggregation of Revenue [Line Items]
Revenue	36,438	41,173	68,557	95,669
Specialty Contractors
Disaggregation of Revenue [Line Items]
Revenue	177,412	163,116	354,220	327,996
Specialty Contractors \| Fixed price
Disaggregation of Revenue [Line Items]
Revenue	135,912	136,345	279,157	275,848
Specialty Contractors \| Guaranteed maximum price
Disaggregation of Revenue [Line Items]
Revenue	7,459	937	12,818	1,560
Specialty Contractors \| Unit price
Disaggregation of Revenue [Line Items]
Revenue	19,864	20,280	36,554	40,825
Specialty Contractors \| Cost plus fee and other
Disaggregation of Revenue [Line Items]
Revenue	$ 14,177	$ 5,554	$ 25,691	$ 9,763

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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+ Details

- Definition

Amount, excluding tax collected from customer, of revenue from satisfaction of performance obligation by transferring promised good or service to customer. Tax collected from customer is tax assessed by governmental authority that is both imposed on and concurrent with specific revenue-producing transaction, including, but not limited to, sales, use, value added and excise.

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+ Details

TUTOR PERINI CORP 10-Q