Policyholder Account Balances (Account Balances) (Details) - USD ($) $ in Millions		3 Months Ended		6 Months Ended
		Jun. 30, 2024	Jun. 30, 2023	Jun. 30, 2024	Jun. 30, 2023	Dec. 31, 2023	Dec. 31, 2022
Policyholder Account Balance [Line Items]
Policyholder Account Balance		$ 22,118	$ 23,543	$ 22,118	$ 23,543
Interest credited		231	209	485	424
Policyholder Account Balance, Increase (Decrease) from Other Change				46	52
Life Insurance Product Line [Member] | Americas [Member] | Other Segments
Policyholder Account Balance [Line Items]
Policyholder Account Balance		1,581	1,639	1,581	1,639	$ 1,612	$ 1,683
Policyholder Account Balance, Issuance				5	6
Policyholder Account Balance, Policy Charge				(15)	(15)
Policyholder Account Balance, Surrender and Withdrawal				(4)	(8)
Policyholder Account Balance, Benefit Payment				(51)	(60)
Interest credited				34	33
Policyholder Account Balance Foreign Currency Translation				0	0
Policyholder Account Balance Reinsurance Recoverable		0	0	0	0
Policyholder Account Balance After Reinsurance		1,581	1,639	1,581	1,639
Policyholder Account Balance, Net Amount at Risk	[1]	621	686	621	686
Policyholder Account Balance, Cash Surrender Value		$ 1,575	$ 1,624	$ 1,575	$ 1,624
Policyholder Account Balance, Weighted Average Crediting Rate		4.40%	4.00%	4.40%	4.00%
Insurance, Other | Americas [Member] | Other Segments
Policyholder Account Balance [Line Items]
Policyholder Account Balance		$ 16,757	$ 17,954	$ 16,757	$ 17,954	17,838	18,906
Policyholder Account Balance, Issuance				59	66
Policyholder Account Balance, Policy Charge				(40)	(17)
Policyholder Account Balance, Surrender and Withdrawal				(1,137)	(1,046)
Policyholder Account Balance, Benefit Payment				(252)	(238)
Interest credited				289	283
Policyholder Account Balance Foreign Currency Translation				0	0
Policyholder Account Balance Reinsurance Recoverable		(2,913)	(1,519)	(2,913)	(1,519)
Policyholder Account Balance After Reinsurance		13,844	16,435	13,844	16,435
Policyholder Account Balance, Net Amount at Risk	[1]	6,849	2,439	6,849	2,439
Policyholder Account Balance, Cash Surrender Value		$ 16,644	$ 17,907	$ 16,644	$ 17,907
Policyholder Account Balance, Weighted Average Crediting Rate		3.40%	3.30%	3.40%	3.30%
Insurance, Other | Asia Pacific [Member] | Other Segments
Policyholder Account Balance [Line Items]
Policyholder Account Balance		$ 3,734	$ 3,898	$ 3,734	$ 3,898	$ 3,990	$ 3,351
Policyholder Account Balance, Issuance				585	605
Policyholder Account Balance, Policy Charge				(74)	(1)
Policyholder Account Balance, Surrender and Withdrawal				(510)	(50)
Policyholder Account Balance, Benefit Payment				(292)	(43)
Interest credited				52	53
Policyholder Account Balance Foreign Currency Translation				(17)	(17)
Policyholder Account Balance Reinsurance Recoverable		0	0	0	0
Policyholder Account Balance After Reinsurance		3,734	3,898	3,734	3,898
Policyholder Account Balance, Net Amount at Risk	[1]	7	0	7	0
Policyholder Account Balance, Cash Surrender Value		$ 3,269	$ 3,695	$ 3,269	$ 3,695
Policyholder Account Balance, Weighted Average Crediting Rate		3.20%	2.90%	3.20%	2.90%

[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.