Reinsurance (Effects of Affiliated Reinsurance on Balance Sheets) (Details) - USD ($) $ in Millions	Dec. 31, 2024	Dec. 31, 2023
Assets
Premiums and Other Receivables, Net	$ 20,809	$ 19,389
Liabilities
Future policy benefits	31,085	32,149
Market risk benefit liabilities	8,346	10,344
Other policy-related balances	3,677	3,619
Other liabilities	8,460	7,772
Assumed Reinsurance
Assets
Premiums and Other Receivables, Net	32	33
Liabilities
Future policy benefits	160	160
Market risk benefit liabilities	251	372
Other policy-related balances	1,568	1,596
Other liabilities	9	11
Assumed Reinsurance | Affiliated Entity
Assets
Premiums and Other Receivables, Net	32	28
Liabilities
Future policy benefits	51	47
Market risk benefit liabilities	235	367
Other policy-related balances	14	13
Other liabilities	$ (16)	$ (4)