Revenue - Narrative (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2025	Dec. 31, 2024	Dec. 31, 2023
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Total accounts receivable	$ 4,821	$ 4,519
Construction contract liabilities	405	500
Contract with customer, liability, revenue recognized	354	387
Unbilled receivables	299	450
Retentions held by customers	226	240
Remaining performance obligations	3,114
Revenue	37,447	35,572	$ 34,949
Equity method investee
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Revenue	302	296	$ 221
Construction contract assets
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Total accounts receivable	$ 525	$ 690