Income Taxes - Operating Loss Carryforwards, General Business Credit Carryforwards, and Tax Credit Carryforwards (Details) - USD ($) $ in Millions	Dec. 31, 2023	Dec. 31, 2022
Foreign tax credit carryforwards
Net operating loss carryforwards:
Foreign tax credit carryforwards	$ 16	$ 17
Federal
Net operating loss carryforwards:
Net operating loss carryforwards	86	214
State
Net operating loss carryforwards:
Net operating loss carryforwards	3,074	2,810
Foreign
Net operating loss carryforwards:
Net operating loss carryforwards	1,880	$ 2,373
Expire 2024 through 2043 | Foreign
Net operating loss carryforwards:
Net operating loss carryforwards	$ 162