CONSOLIDATED STATEMENTS OF INCOME - USD ($) shares in Millions, $ in Millions	12 Months Ended
	Dec. 31, 2025	Dec. 31, 2024	Dec. 31, 2023
Income Statement [Abstract]
Revenues	$ 16,310	$ 15,405	$ 14,984
Cost of revenues, exclusive of depreciation and amortization	10,880	10,030	9,745
Selling, general and administrative expenses	1,999	1,992	2,053
Depreciation and amortization	1,144	1,114	1,125
Restructuring costs	105	67	84
Income from operations	2,182	2,202	1,977
Interest income	(45)	(47)	(36)
Interest expense	729	670	672
Loss on extinguishment of debt	6	0	6
Other income, net	(99)	(90)	(124)
Income before income taxes and equity in earnings of unconsolidated affiliates	1,591	1,669	1,459
Income tax expense	252	301	101
Income before equity in earnings of unconsolidated affiliates	1,339	1,368	1,358
Equity in earnings of unconsolidated affiliates	22	5	0
Net income	1,361	1,373	1,358
Net Income (Loss) Attributable to Noncontrolling Interest	(1)	0	0
Net income	$ 1,360	$ 1,373	$ 1,358
Earnings per share attributable to common stockholders:
Basic (in dollars per share)	$ 7.91	$ 7.57	$ 7.39
Diluted (in dollars per share)	$ 7.84	$ 7.49	$ 7.29
Weighted average common shares outstanding:
Basic (in shares)	171.9	181.3	183.8
Diluted (in shares)	173.5	183.4	186.3