Segment Information - Reconciliation (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2022	Mar. 31, 2021
Segment Reporting Information [Line Items]
Total adjusted EBITDA	$ 1,914	$ 2,157
Depreciation and amortization	(808)	(1,150)
OPERATING INCOME	1,083	987
Total other expense, net	(282)	(355)
INCOME BEFORE INCOME TAXES	801	632
Income tax expense	202	157
NET INCOME	599	475
Operating Segments
Segment Reporting Information [Line Items]
Total adjusted EBITDA	3,397	3,664
Segment Reconciling Items
Segment Reporting Information [Line Items]
Total adjusted EBITDA	(1,483)	(1,507)
Depreciation and amortization	(808)	(1,150)
Operations and other expenses	(1,483)	(1,507)
Stock-based compensation	(23)	(20)
OPERATING INCOME	1,083	987
Total other expense, net	$ (282)	$ (355)