Segment Information - Reconciliation (Details) - USD ($)	3 Months Ended		6 Months Ended
	Jun. 30, 2024	Jun. 30, 2023	Jun. 30, 2024	Jun. 30, 2023
Segment Reporting Information [Line Items]
Depreciation and amortization	$ (743,000,000)	$ (746,000,000)	$ (1,491,000,000)	$ (1,479,000,000)
Goodwill impairment	0	(8,793,000,000)	0	(8,793,000,000)
OPERATING INCOME (LOSS)	135,000,000	(8,421,000,000)	180,000,000	(8,031,000,000)
Total other (expense) income, net	(176,000,000)	(269,000,000)	(119,000,000)	21,000,000
(LOSS) INCOME BEFORE INCOME TAXES	(41,000,000)	(8,690,000,000)	61,000,000	(8,010,000,000)
Income tax expense	8,000,000	46,000,000	53,000,000	215,000,000
NET (LOSS) INCOME	(49,000,000)	(8,736,000,000)	8,000,000	(8,225,000,000)
Operating Segments
Segment Reporting Information [Line Items]
Total segment adjusted EBITDA	1,722,000,000	1,958,000,000	3,453,000,000	3,967,000,000
Segment Reconciling Items
Segment Reporting Information [Line Items]
Depreciation and amortization	(743,000,000)	(746,000,000)	(1,491,000,000)	(1,479,000,000)
Goodwill impairment	0	(8,793,000,000)	0	(8,793,000,000)
Other unallocated expense	(847,000,000)	(831,000,000)	(1,771,000,000)	(1,703,000,000)
Stock-based compensation credit (expense)	3,000,000	(9,000,000)	(11,000,000)	(23,000,000)
OPERATING INCOME (LOSS)	135,000,000	(8,421,000,000)	180,000,000	(8,031,000,000)
Total other (expense) income, net	$ (176,000,000)	$ (269,000,000)	$ (119,000,000)	$ 21,000,000