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Revenue from Contracts with Customers (Details) - USD ($)	3 Months Ended	6 Months Ended	12 Months Ended
	Jun. 30, 2024	Jun. 30, 2024	Dec. 31, 2023
Revenue From Contract With Customers [Line Items]
Change in estimate of transaction price	$ 12,300,000
Allowance for credit losses	33,251,000	$ 33,251,000	$ 22,502,000
Contract asset impairment		0	$ 0
Remaining performance obligations	8,999,223,000	8,999,223,000
2024Acquisitions
Revenue From Contract With Customers [Line Items]
Increase in contract assets from acquisitions		1,000,000
Increase in contract liabilities from acquisitions		29,600,000
Excluding2024Acquisitions
Revenue From Contract With Customers [Line Items]
Increase in net contract liabilities		136,300,000
Minimum [Member]
Revenue From Contract With Customers [Line Items]
Performance obligation satisfied in previous period		1,000,000
Change in total estimated cost or anticipated contract value		$ 1,000,000
United States Electrical Construction And Facilities Services [Member]
Revenue From Contract With Customers [Line Items]
Change in estimate of transaction price	8,400,000
United States Mechanical Construction And Facilities Services [Member]
Revenue From Contract With Customers [Line Items]
Change in estimate of transaction price	$ 3,900,000

X

- Definition

Amount of increase (decrease) in gross profit recognized for cumulative catch-up adjustment from change in estimate of transaction price which increases (decreases) right to consideration in exchange for good or service transferred to customer when right is conditioned on something other than passage of time. Includes, but is not limited to, change in assessment of whether estimate of variable consideration is constrained.

+ References

No definition available.

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- Definition

Reduction in profit recognized for cumulative catch-up adjustment from change in measure of progress.

+ References

No definition available.

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X

- Definition

Amount of increase in net contract liabilities.

+ References

No definition available.

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RevenueFromContractWithCustomersLineItems

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- Definition

Amount of allowance for credit loss on accounts receivable.

+ References

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-Name Accounting Standards Codification
-Section S99
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Amount of expense (reversal of expense) for expected credit loss on right to consideration in exchange for good or service transferred to customer when right is conditioned on something other than passage of time.

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- Definition

Amount of increase (decrease) in obligation to transfer good or service to customer for which consideration from customer has been received or is due, from business combination.

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- Definition

Amount of revenue recognized from performance obligation satisfied or partially satisfied in previous reporting periods. Includes, but is not limited to, change in transaction price.

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Amount of transaction price allocated to performance obligation that has not been recognized as revenue.

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