Income Taxes - Net Deferred Tax Assets and Liabilities (Details) - USD ($) $ in Millions	Dec. 31, 2025	Dec. 31, 2024
Income Tax Disclosure [Abstract]
Deferred tax assets	$ 21,065	$ 17,991
Deferred tax liabilities	(11,420)	(10,091)
Valuation allowance	(9,754)	(7,837)
Net deferred tax liabilities after valuation allowance	$ (109)
Net deferred tax assets after valuation allowance		$ 63