Income Taxes - Operating Loss Carryforwards (Details) - USD ($) $ in Millions	Dec. 31, 2024	Dec. 31, 2023
Domestic Tax Jurisdiction
Operating Loss Carryforwards [Line Items]
Operating loss carryforwards	$ 1,499	$ 1,033
Capital loss carryforwards	557	550
Interest carryforwards	85	0
U.S. Federal
Operating Loss Carryforwards [Line Items]
Operating loss carryforwards	2	1
Interest carryforwards	3,743	2,303
Federal foreign tax credit carryforwards	29	24
State and Local Jurisdiction
Operating Loss Carryforwards [Line Items]
Operating loss carryforwards	1,822	493
Interest carryforwards	2,303	1,209
Other
Operating Loss Carryforwards [Line Items]
Operating loss carryforwards	339	461
Capital loss carryforwards	9	7
Interest carryforwards	126	129
Other carryforwards	$ 0	$ 3