Related Party Transactions (Shared Services, Overhead Allocations and Broker-Dealer Transactions - Narrative) (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2025	Mar. 31, 2024	Dec. 31, 2024
Insurance Commissions and Fees	$ 422	$ 305
Total revenues	2,232	(124)
All Services and Transactions Except Broker Dealer Activities [Member]
Accounts Payable, Other	(65)		$ (71)
Broker Dealer Activities [Member]
Total revenues	41	43
Operating Costs and Expenses	229	239
Other Receivables	14		$ 15
Affiliated Entity
Insurance Commissions and Fees	42	44
Selling, General and Administrative Expense	$ 211	$ 233