Income Taxes - Schedule of Expiration Periods of Deferred Tax Assets (Detail) - USD ($) $ in Millions	Dec. 31, 2024	Aug. 01, 2024	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Tax Credit Carryforward [Line Items]
Tax loss carryforwards	$ 2,218
Tax credit carryforwards	23		$ 24
Other	1,182
Valuation allowance	(2,734)		(2,595)	$ (2,333)	$ (2,062)
Total	689	$ 121	$ 645
Expires Within 10 Years [Member]
Tax Credit Carryforward [Line Items]
Tax loss carryforwards	164
Tax credit carryforwards	23
Other	0
Valuation allowance	(187)
Total	0
Expires Within 11-20 Years [Member]
Tax Credit Carryforward [Line Items]
Tax loss carryforwards	369
Valuation allowance	(330)
Total	39
No Expiration [Member]
Tax Credit Carryforward [Line Items]
Tax loss carryforwards	1,685
Other	136
Valuation allowance	(1,760)
Total	61
Other [Member]
Tax Credit Carryforward [Line Items]
Tax loss carryforwards	0
Other	1,046
Valuation allowance	(457)
Total	$ 589