Policyholder Account Balances (Account Balances) (Details) - USD ($) $ in Millions		12 Months Ended
		Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Policyholder Account Balance [Line Items]
Policyholder Account Balance		$ 24,026	$ 23,490
Interest credited		1,087	864	$ 682
Policyholder Account Balance, Increase (Decrease) from Other Change		36	50
Life Insurance Product Line [Member] | Americas [Member] | Other Operating Segment
Policyholder Account Balance [Line Items]
Policyholder Account Balance		3,273	1,612	1,683
Policyholder Account Balance, Issuance		1,883	21
Policyholder Account Balance, Policy Charge		(191)	(31)
Policyholder Account Balance, Surrender and Withdrawal		(25)	(15)
Policyholder Account Balance, Benefit Payment		(124)	(113)
Interest credited		118	67
Policyholder Account Balance Foreign Currency Translation		0	0
Policyholder Account Balance Reinsurance Recoverable		0	0
Policyholder Account Balance After Reinsurance		$ 3,273	$ 1,612
Policyholder Account Balance, Weighted Average Crediting Rate		3.10%	4.40%
Policyholder Account Balance, Net Amount at Risk	[1]	$ 34,133	$ 671
Policyholder Account Balance, Cash Surrender Value		3,268	1,606
Insurance, Other [Member] | Americas [Member] | Other Operating Segment
Policyholder Account Balance [Line Items]
Policyholder Account Balance		16,432	17,838	18,906
Policyholder Account Balance, Issuance		544	919
Policyholder Account Balance, Policy Charge		(81)	(45)
Policyholder Account Balance, Surrender and Withdrawal		(1,988)	(2,045)
Policyholder Account Balance, Benefit Payment		(456)	(471)
Interest credited		575	574
Policyholder Account Balance Foreign Currency Translation		0	0
Policyholder Account Balance Reinsurance Recoverable		(2,797)	(3,065)
Policyholder Account Balance After Reinsurance		$ 13,635	$ 14,773
Policyholder Account Balance, Weighted Average Crediting Rate		3.50%	3.40%
Policyholder Account Balance, Net Amount at Risk	[1]	$ 6,509	$ 7,049
Policyholder Account Balance, Cash Surrender Value		16,284	17,707
Insurance, Other [Member] | Asia Pacific [Member] | Other Operating Segment
Policyholder Account Balance [Line Items]
Policyholder Account Balance		4,285	3,990	$ 3,351
Policyholder Account Balance, Issuance		1,693	889
Policyholder Account Balance, Policy Charge		(142)	(10)
Policyholder Account Balance, Surrender and Withdrawal		(967)	(137)
Policyholder Account Balance, Benefit Payment		(354)	(208)
Interest credited		124	106
Policyholder Account Balance Foreign Currency Translation		(59)	(1)
Policyholder Account Balance Reinsurance Recoverable		0	0
Policyholder Account Balance After Reinsurance		$ 4,285	$ 3,990
Policyholder Account Balance, Weighted Average Crediting Rate		3.90%	3.00%
Policyholder Account Balance, Net Amount at Risk	[1]	$ 0	$ 0
Policyholder Account Balance, Cash Surrender Value		$ 3,879	$ 3,314

[1] Net amount at risk is defined as the guaranteed amount less the account value as of the balance sheet date. The balance represents the amount of the claim the Company would incur if death claims were filed on all contracts on the balance sheet date.