Revenue - Narrative (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Total accounts receivable	$ 4,519	$ 4,290
Construction contract liabilities	500	439
Contract with customer, liability, revenue recognized	387	308
Unbilled receivables	450	471
Retentions held by customers	240	245
Remaining performance obligations	3,551
Revenue	35,572	34,949	$ 32,723
Equity method investee
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Revenue	296	221	$ 237
Construction contract assets
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Total accounts receivable	$ 690	$ 716