Segment Information - Reconciliation (Details) - USD ($)			3 Months Ended		6 Months Ended
	May 21, 2025	Apr. 30, 2025	Jun. 30, 2025	Jun. 30, 2024	Jun. 30, 2025	Jun. 30, 2024
Segment Reporting Information [Line Items]
Depreciation and amortization			$ (688,000,000)	$ (743,000,000)	$ (1,401,000,000)	$ (1,491,000,000)
Goodwill impairment	$ 0	$ 0	(628,000,000)	0	(628,000,000)	0
OPERATING (LOSS) INCOME			(603,000,000)	135,000,000	(496,000,000)	180,000,000
Total other expense, net			(546,000,000)	(176,000,000)	(898,000,000)	(119,000,000)
(LOSS) INCOME BEFORE INCOME TAXES			(1,149,000,000)	(41,000,000)	(1,394,000,000)	61,000,000
Income tax (benefit) expense			(234,000,000)	8,000,000	(278,000,000)	53,000,000
NET (LOSS) INCOME			(915,000,000)	(49,000,000)	(1,116,000,000)	8,000,000
Operating Segments
Segment Reporting Information [Line Items]
Total segment adjusted EBITDA			1,469,000,000	1,540,000,000	3,016,000,000	3,091,000,000
Segment Reconciling Items
Segment Reporting Information [Line Items]
Depreciation and amortization			(688,000,000)	(743,000,000)	(1,401,000,000)	(1,491,000,000)
Goodwill impairment			(628,000,000)	0	(628,000,000)	0
Other unallocated expense			(744,000,000)	(665,000,000)	(1,461,000,000)	(1,409,000,000)
Stock-based compensation (expense) credit			(12,000,000)	3,000,000	(22,000,000)	(11,000,000)
OPERATING (LOSS) INCOME			(603,000,000)	135,000,000	(496,000,000)	180,000,000
Total other expense, net			$ (546,000,000)	$ (176,000,000)	$ (898,000,000)	$ (119,000,000)