Segment Information - Reconciliation of Adjusted EBITDA from Segment to Consolidated Statements (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2024	Mar. 31, 2023
Segment Reporting [Abstract]
Adjusted EBITDA	$ 9,355	$ 9,415
Adjustments	6	8
Depreciation	(2,175)	(2,264)
Amortization	(1,376)	(1,513)
Interest expense	(1,002)	(1,010)
Investment and other income (loss), net	298	607
Income before income taxes	$ 5,105	$ 5,243