Supplementary Insurance Information (Details) - USD ($) $ in Millions		12 Months Ended
		Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
SEC Schedule, 12-16, Insurance Companies, Supplementary Insurance Information [Line Items]
SEC Schedule, 12-16, Insurance Companies, Supplementary Insurance Information, Deferred Policy Acquisition Cost		$ 3,974	$ 3,690
SEC Schedule, 12-16, Insurance Companies, Supplementary Insurance Information, Liability for Future Policy Benefit, Loss, Claim and Loss Expense		65,792	62,159
SEC Schedule, 12-16, Insurance Companies, Supplementary Insurance Information, Other Policy Claim and Benefit Payable		6,571	6,993
SEC Schedule, 12-16, Insurance Companies, Supplementary Insurance Information, Premium Revenue		13,078	12,513	$ 11,694
SEC Schedule, 12-16, Insurance Companies, Supplementary Insurance Information, Net Investment Income		3,161	3,138	2,575
SEC Schedule, 12-16, Insurance Companies, Supplementary Insurance Information, Benefit, Claim, Loss and Settlement Expenses		12,728	13,476	11,779
SEC Schedule, 12-16, Insurance Companies, Supplementary Insurance Information, Amortization of Deferred Policy Acquisition Cost	[1]	454	532	383
SEC Schedule, 12-16, Insurance Companies, Supplementary Insurance Information, Other Operating Expense	[2]	2,245	1,959	1,881
US Traditional Segment Reporting Information [Member]
SEC Schedule, 12-16, Insurance Companies, Supplementary Insurance Information [Line Items]
SEC Schedule, 12-16, Insurance Companies, Supplementary Insurance Information, Deferred Policy Acquisition Cost		2,000	1,926
SEC Schedule, 12-16, Insurance Companies, Supplementary Insurance Information, Liability for Future Policy Benefit, Loss, Claim and Loss Expense		13,122	12,757
SEC Schedule, 12-16, Insurance Companies, Supplementary Insurance Information, Other Policy Claim and Benefit Payable		2,495	2,806
SEC Schedule, 12-16, Insurance Companies, Supplementary Insurance Information, Premium Revenue		6,590	6,244	5,838
SEC Schedule, 12-16, Insurance Companies, Supplementary Insurance Information, Net Investment Income		965	930	714
SEC Schedule, 12-16, Insurance Companies, Supplementary Insurance Information, Benefit, Claim, Loss and Settlement Expenses		6,335	6,790	5,979
SEC Schedule, 12-16, Insurance Companies, Supplementary Insurance Information, Amortization of Deferred Policy Acquisition Cost	[1]	220	269	200
SEC Schedule, 12-16, Insurance Companies, Supplementary Insurance Information, Other Operating Expense	[2]	806	679	679
US Non-Traditional Segment Reporting Information [Member]
SEC Schedule, 12-16, Insurance Companies, Supplementary Insurance Information [Line Items]
SEC Schedule, 12-16, Insurance Companies, Supplementary Insurance Information, Deferred Policy Acquisition Cost		387	190
SEC Schedule, 12-16, Insurance Companies, Supplementary Insurance Information, Liability for Future Policy Benefit, Loss, Claim and Loss Expense		24,662	25,107
SEC Schedule, 12-16, Insurance Companies, Supplementary Insurance Information, Other Policy Claim and Benefit Payable		34	24
SEC Schedule, 12-16, Insurance Companies, Supplementary Insurance Information, Premium Revenue		66	55	53
SEC Schedule, 12-16, Insurance Companies, Supplementary Insurance Information, Net Investment Income		1,078	1,089	999
SEC Schedule, 12-16, Insurance Companies, Supplementary Insurance Information, Benefit, Claim, Loss and Settlement Expenses		666	731	764
SEC Schedule, 12-16, Insurance Companies, Supplementary Insurance Information, Amortization of Deferred Policy Acquisition Cost	[1]	51	101	52
SEC Schedule, 12-16, Insurance Companies, Supplementary Insurance Information, Other Operating Expense	[2]	184	145	109
Canada Traditional Segment Reporting Information [Member]
SEC Schedule, 12-16, Insurance Companies, Supplementary Insurance Information [Line Items]
SEC Schedule, 12-16, Insurance Companies, Supplementary Insurance Information, Deferred Policy Acquisition Cost		171	192
SEC Schedule, 12-16, Insurance Companies, Supplementary Insurance Information, Liability for Future Policy Benefit, Loss, Claim and Loss Expense		3,600	3,668
SEC Schedule, 12-16, Insurance Companies, Supplementary Insurance Information, Other Policy Claim and Benefit Payable		341	330
SEC Schedule, 12-16, Insurance Companies, Supplementary Insurance Information, Premium Revenue		1,219	1,194	1,052
SEC Schedule, 12-16, Insurance Companies, Supplementary Insurance Information, Net Investment Income		238	248	207
SEC Schedule, 12-16, Insurance Companies, Supplementary Insurance Information, Benefit, Claim, Loss and Settlement Expenses		1,158	1,096	909
SEC Schedule, 12-16, Insurance Companies, Supplementary Insurance Information, Amortization of Deferred Policy Acquisition Cost	[1]	14	13	16
SEC Schedule, 12-16, Insurance Companies, Supplementary Insurance Information, Other Operating Expense	[2]	207	211	201
Canada Non-Traditional Segment Reporting Information [Member]
SEC Schedule, 12-16, Insurance Companies, Supplementary Insurance Information [Line Items]
SEC Schedule, 12-16, Insurance Companies, Supplementary Insurance Information, Deferred Policy Acquisition Cost		0	0
SEC Schedule, 12-16, Insurance Companies, Supplementary Insurance Information, Liability for Future Policy Benefit, Loss, Claim and Loss Expense		2	16
SEC Schedule, 12-16, Insurance Companies, Supplementary Insurance Information, Other Policy Claim and Benefit Payable		6	5
SEC Schedule, 12-16, Insurance Companies, Supplementary Insurance Information, Premium Revenue		95	90	83
SEC Schedule, 12-16, Insurance Companies, Supplementary Insurance Information, Net Investment Income		1	0	1
SEC Schedule, 12-16, Insurance Companies, Supplementary Insurance Information, Benefit, Claim, Loss and Settlement Expenses		68	79	68
SEC Schedule, 12-16, Insurance Companies, Supplementary Insurance Information, Amortization of Deferred Policy Acquisition Cost	[1]	0	0	0
SEC Schedule, 12-16, Insurance Companies, Supplementary Insurance Information, Other Operating Expense	[2]	5	7	3
EMEA Traditional Segment Reporting Information [Member]
SEC Schedule, 12-16, Insurance Companies, Supplementary Insurance Information [Line Items]
SEC Schedule, 12-16, Insurance Companies, Supplementary Insurance Information, Deferred Policy Acquisition Cost		231	253
SEC Schedule, 12-16, Insurance Companies, Supplementary Insurance Information, Liability for Future Policy Benefit, Loss, Claim and Loss Expense		1,358	1,366
SEC Schedule, 12-16, Insurance Companies, Supplementary Insurance Information, Other Policy Claim and Benefit Payable		1,631	1,612
SEC Schedule, 12-16, Insurance Companies, Supplementary Insurance Information, Premium Revenue		1,736	1,738	1,555
SEC Schedule, 12-16, Insurance Companies, Supplementary Insurance Information, Net Investment Income		89	88	72
SEC Schedule, 12-16, Insurance Companies, Supplementary Insurance Information, Benefit, Claim, Loss and Settlement Expenses		1,573	1,829	1,389
SEC Schedule, 12-16, Insurance Companies, Supplementary Insurance Information, Amortization of Deferred Policy Acquisition Cost	[1]	44	48	31
SEC Schedule, 12-16, Insurance Companies, Supplementary Insurance Information, Other Operating Expense	[2]	203	189	186
EMEA Non-Traditional Segment Reporting Information [Member]
SEC Schedule, 12-16, Insurance Companies, Supplementary Insurance Information [Line Items]
SEC Schedule, 12-16, Insurance Companies, Supplementary Insurance Information, Deferred Policy Acquisition Cost		0	0
SEC Schedule, 12-16, Insurance Companies, Supplementary Insurance Information, Liability for Future Policy Benefit, Loss, Claim and Loss Expense		5,306	5,999
SEC Schedule, 12-16, Insurance Companies, Supplementary Insurance Information, Other Policy Claim and Benefit Payable		104	89
SEC Schedule, 12-16, Insurance Companies, Supplementary Insurance Information, Premium Revenue		486	350	252
SEC Schedule, 12-16, Insurance Companies, Supplementary Insurance Information, Net Investment Income		148	205	193
SEC Schedule, 12-16, Insurance Companies, Supplementary Insurance Information, Benefit, Claim, Loss and Settlement Expenses		368	258	163
SEC Schedule, 12-16, Insurance Companies, Supplementary Insurance Information, Amortization of Deferred Policy Acquisition Cost	[1]	0	0	0
SEC Schedule, 12-16, Insurance Companies, Supplementary Insurance Information, Other Operating Expense	[2]	59	55	50
Asia Pacific Traditional Segment Reporting Information [Member]
SEC Schedule, 12-16, Insurance Companies, Supplementary Insurance Information [Line Items]
SEC Schedule, 12-16, Insurance Companies, Supplementary Insurance Information, Deferred Policy Acquisition Cost		1,039	1,052
SEC Schedule, 12-16, Insurance Companies, Supplementary Insurance Information, Liability for Future Policy Benefit, Loss, Claim and Loss Expense		3,933	3,792
SEC Schedule, 12-16, Insurance Companies, Supplementary Insurance Information, Other Policy Claim and Benefit Payable		1,933	2,116
SEC Schedule, 12-16, Insurance Companies, Supplementary Insurance Information, Premium Revenue		2,650	2,624	2,681
SEC Schedule, 12-16, Insurance Companies, Supplementary Insurance Information, Net Investment Income		142	136	107
SEC Schedule, 12-16, Insurance Companies, Supplementary Insurance Information, Benefit, Claim, Loss and Settlement Expenses		2,152	2,445	2,293
SEC Schedule, 12-16, Insurance Companies, Supplementary Insurance Information, Amortization of Deferred Policy Acquisition Cost	[1]	57	60	65
SEC Schedule, 12-16, Insurance Companies, Supplementary Insurance Information, Other Operating Expense	[2]	321	283	274
Asia Pacific Non-Traditional Segment Reporting Information [Member]
SEC Schedule, 12-16, Insurance Companies, Supplementary Insurance Information [Line Items]
SEC Schedule, 12-16, Insurance Companies, Supplementary Insurance Information, Deferred Policy Acquisition Cost		141	74
SEC Schedule, 12-16, Insurance Companies, Supplementary Insurance Information, Liability for Future Policy Benefit, Loss, Claim and Loss Expense		12,218	8,202
SEC Schedule, 12-16, Insurance Companies, Supplementary Insurance Information, Other Policy Claim and Benefit Payable		24	6
SEC Schedule, 12-16, Insurance Companies, Supplementary Insurance Information, Premium Revenue		236	218	180
SEC Schedule, 12-16, Insurance Companies, Supplementary Insurance Information, Net Investment Income		272	138	85
SEC Schedule, 12-16, Insurance Companies, Supplementary Insurance Information, Benefit, Claim, Loss and Settlement Expenses		376	244	206
SEC Schedule, 12-16, Insurance Companies, Supplementary Insurance Information, Amortization of Deferred Policy Acquisition Cost	[1]	68	41	19
SEC Schedule, 12-16, Insurance Companies, Supplementary Insurance Information, Other Operating Expense	[2]	50	34	25
Corporate And Other Segment Reporting Information [Member]
SEC Schedule, 12-16, Insurance Companies, Supplementary Insurance Information [Line Items]
SEC Schedule, 12-16, Insurance Companies, Supplementary Insurance Information, Deferred Policy Acquisition Cost		5	3
SEC Schedule, 12-16, Insurance Companies, Supplementary Insurance Information, Liability for Future Policy Benefit, Loss, Claim and Loss Expense		1,591	1,252
SEC Schedule, 12-16, Insurance Companies, Supplementary Insurance Information, Other Policy Claim and Benefit Payable		3	5
SEC Schedule, 12-16, Insurance Companies, Supplementary Insurance Information, Premium Revenue		0	0	0
SEC Schedule, 12-16, Insurance Companies, Supplementary Insurance Information, Net Investment Income		228	304	197
SEC Schedule, 12-16, Insurance Companies, Supplementary Insurance Information, Benefit, Claim, Loss and Settlement Expenses		32	4	8
SEC Schedule, 12-16, Insurance Companies, Supplementary Insurance Information, Amortization of Deferred Policy Acquisition Cost	[1]	0	0	0
SEC Schedule, 12-16, Insurance Companies, Supplementary Insurance Information, Other Operating Expense	[2]	$ 410	$ 356	$ 354

[1] Includes the effect from investment related gains and losses.

[2] Includes policy acquisition costs and other insurance expenses, excluding amortization of DAC. Also includes other operating expenses, interest expense, and collateral finance and securitization expense.