Income Taxes (Operating and Capital Loss Carryforwards) (Details) - USD ($) $ in Millions	Dec. 31, 2023	Dec. 31, 2022
Federal
Operating Loss Carryforwards [Line Items]
Operating loss carryforwards	$ 0	$ 0
State and local
Operating Loss Carryforwards [Line Items]
Operating loss carryforwards	1,670	1,781
Foreign operations
Operating Loss Carryforwards [Line Items]
Operating loss carryforwards	356	295
Foreign operations | Operating loss expiring between 2022 and 2036
Operating Loss Carryforwards [Line Items]
Operating loss carryforwards	32
Foreign operations | Operating loss unlimited carryforward
Operating Loss Carryforwards [Line Items]
Operating loss carryforwards	324
Federal foreign
Operating Loss Carryforwards [Line Items]
Tax credit carryforwards	$ 18	$ 15