Consolidated Statements Of Operations - USD ($) shares in Millions, $ in Millions	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Income Statement [Abstract]
Revenues	$ 19,736	$ 19,353	$ 19,428
Operating expenses:
Cost of revenues (exclusive of depreciation and amortization expense shown separately below)	12,958	12,664	12,448
Selling, general and administrative expenses	3,223	3,252	3,443
Restructuring charges	134	229	0
Depreciation and amortization expense	529	519	569
Income from operations	2,892	2,689	2,968
Other income (expense), net:
Interest income	119	126	59
Interest expense	(54)	(41)	(19)
Foreign currency exchange gains (losses), net	(19)	2	7
Other, net	0	11	1
Total other income (expense), net	46	98	48
Income before provision for income taxes	2,938	2,787	3,016
Provision for income taxes	(713)	(668)	(730)
Income (loss) from equity method investments	15	7	4
Net income	$ 2,240	$ 2,126	$ 2,290
Basic earnings per share	$ 4.52	$ 4.21	$ 4.42
Diluted earnings per share	$ 4.51	$ 4.21	$ 4.41
Weighted average number of common shares outstanding—Basic	496	505	518
Dilutive effect of shares issuable under stock-based compensation plans	1	0	1
Weighted average number of common shares outstanding—Diluted	497	505	519