Income Taxes - Net Deferred Tax Assets and Liabilities (Details) - USD ($) $ in Millions	Dec. 31, 2024	Dec. 31, 2023
Income Tax Disclosure [Abstract]
Deferred tax assets	$ 17,991	$ 14,743
Deferred tax liabilities	(10,091)	(10,363)
Valuation allowance	(7,837)	(4,550)
Net deferred tax assets after valuation allowance	$ 63
Net deferred tax liabilities after valuation allowance		$ (170)