Related Party Transactions (Shared Services, Overhead Allocations and Broker-Dealer Transactions - Narrative) (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2025	Sep. 30, 2024	Sep. 30, 2025	Sep. 30, 2024	Dec. 31, 2024
Insurance Commissions and Fees	$ 409	$ 430	$ 1,265	$ 1,186
Total revenues	1,642	1,831	4,571	2,953
All Services and Transactions Except Broker Dealer Activities [Member]
Accounts Payable, Other	(75)		(75)		$ (71)
Broker Dealer Activities [Member]
Total revenues	42	44	124	130
Operating Costs and Expenses	244	232	710	701
Other Receivables	14		14		$ 15
Affiliated Entity
Insurance Commissions and Fees	43	45	126	133
Selling, General and Administrative Expense	$ 229	$ 221	$ 664	$ 669