Policyholder Account Balances (Account Balances) (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended		12 Months Ended
	Jun. 30, 2023	Jun. 30, 2022	Jun. 30, 2023	Jun. 30, 2022	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Policyholder Account Balance [Line Items]
Policyholder Account Balance	$ 23,543	$ 23,103	$ 23,543	$ 23,103
Interest credited	209	138	424	279
Policyholder Account Balance, Increase (Decrease) from Other Change			52	71
Accounting Standards Update 2018-12
Policyholder Account Balance [Line Items]
Interest credited					$ 682	$ 700
Life Insurance Product Line [Member] | Americas [Member] | Other Segments
Policyholder Account Balance [Line Items]
Policyholder Account Balance	1,639	1,693	1,639	1,693	1,683	1,719
Policyholder Account Balance, Issuance			6	7
Policyholder Account Balance, Policy Charge			(15)	(16)
Policyholder Account Balance, Surrender and Withdrawal			(8)	(10)
Policyholder Account Balance, Benefit Payment			(60)	(40)
Interest credited			33	33
Policyholder Account Balance Foreign Currency Translation			0	0
Policyholder Account Balance Reinsurance Recoverable	0	0	0	0
Policyholder Account Balance After Reinsurance	1,639	1,693	1,639	1,693
Policyholder Account Balance, Net Amount at Risk	686	710	686	710
Policyholder Account Balance, Cash Surrender Value	$ 1,624	$ 1,678	$ 1,624	$ 1,678
Policyholder Account Balance, Weighted Average Crediting Rate	4.00%	4.00%	4.00%	4.00%
Life Insurance Product Line [Member] | Americas [Member] | Accounting Standards Update 2018-12 | Other Segments
Policyholder Account Balance [Line Items]
Policyholder Account Balance					1,683	1,719	$ 1,752
Policyholder Account Balance, Issuance					24	25
Policyholder Account Balance, Policy Charge					(32)	(32)
Policyholder Account Balance, Surrender and Withdrawal					(17)	(13)
Policyholder Account Balance, Benefit Payment					(76)	(79)
Interest credited					65	66
Policyholder Account Balance Foreign Currency Translation					0	0
Policyholder Account Balance Reinsurance Recoverable					0	0
Policyholder Account Balance After Reinsurance					1,683	1,719
Insurance, Other | Americas [Member] | Other Segments
Policyholder Account Balance [Line Items]
Policyholder Account Balance	$ 17,954	$ 18,980	$ 17,954	$ 18,980	18,906	18,758
Policyholder Account Balance, Issuance			66	738
Policyholder Account Balance, Policy Charge			(17)	(16)
Policyholder Account Balance, Surrender and Withdrawal			(1,046)	(576)
Policyholder Account Balance, Benefit Payment			(238)	(228)
Interest credited			283	304
Policyholder Account Balance Foreign Currency Translation			0	0
Policyholder Account Balance Reinsurance Recoverable	(1,519)	(1,545)	(1,519)	(1,545)
Policyholder Account Balance After Reinsurance	16,435	17,435	16,435	17,435
Policyholder Account Balance, Net Amount at Risk	2,439	2,547	2,439	2,547
Policyholder Account Balance, Cash Surrender Value	$ 17,907	$ 18,925	$ 17,907	$ 18,925
Policyholder Account Balance, Weighted Average Crediting Rate	3.30%	3.20%	3.30%	3.20%
Insurance, Other | Americas [Member] | Accounting Standards Update 2018-12 | Other Segments
Policyholder Account Balance [Line Items]
Policyholder Account Balance					18,906	18,758	16,273
Policyholder Account Balance, Issuance					1,289	3,290
Policyholder Account Balance, Policy Charge					(33)	(31)
Policyholder Account Balance, Surrender and Withdrawal					(1,258)	(1,015)
Policyholder Account Balance, Benefit Payment					(448)	(404)
Interest credited					598	645
Policyholder Account Balance Foreign Currency Translation					0	0
Policyholder Account Balance Reinsurance Recoverable					(1,543)	(1,561)
Policyholder Account Balance After Reinsurance					17,363	17,197
Insurance, Other | Asia Pacific [Member] | Other Segments
Policyholder Account Balance [Line Items]
Policyholder Account Balance	$ 3,898	$ 2,359	$ 3,898	$ 2,359	3,351	1,621
Policyholder Account Balance, Issuance			605	954
Policyholder Account Balance, Policy Charge			(1)	(22)
Policyholder Account Balance, Surrender and Withdrawal			(50)	(170)
Policyholder Account Balance, Benefit Payment			(43)	(16)
Interest credited			53	15
Policyholder Account Balance Foreign Currency Translation			(17)	23
Policyholder Account Balance Reinsurance Recoverable	0	0	0	0
Policyholder Account Balance After Reinsurance	3,898	2,359	3,898	2,359
Policyholder Account Balance, Net Amount at Risk	0	0	0	0
Policyholder Account Balance, Cash Surrender Value	$ 3,695	$ 2,277	$ 3,695	$ 2,277
Policyholder Account Balance, Weighted Average Crediting Rate	2.90%	1.80%	2.90%	1.80%
Insurance, Other | Asia Pacific [Member] | Accounting Standards Update 2018-12 | Other Segments
Policyholder Account Balance [Line Items]
Policyholder Account Balance					3,351	1,621	$ 809
Policyholder Account Balance, Issuance					2,521	868
Policyholder Account Balance, Policy Charge					(134)	(1)
Policyholder Account Balance, Surrender and Withdrawal					(639)	(36)
Policyholder Account Balance, Benefit Payment					(46)	(24)
Interest credited					51	19
Policyholder Account Balance Foreign Currency Translation					(23)	(14)
Policyholder Account Balance Reinsurance Recoverable					0	0
Policyholder Account Balance After Reinsurance					$ 3,351	$ 1,621