Investments (Other Invested Assets) (Details) - USD ($) $ in Millions	Dec. 31, 2024	Dec. 31, 2023
Other Investments [Abstract]
Other invested assets	$ 1,242	$ 1,171
Equity Release Mortgages [Member]
Other Investments [Abstract]
Other invested assets	984	944
Gain (Loss) on Derivatives [Member]
Other Investments [Abstract]
Other invested assets	121	97
Federal Home Loan Bank Certificates and Obligations (FHLB)
Other Investments [Abstract]
Other invested assets	71	63
Other [Member]
Other Investments [Abstract]
Other invested assets	$ 66	$ 67