Supplementary Insurance Information (Details) - USD ($) $ in Millions		12 Months Ended
		Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
SEC Schedule, 12-16, Insurance Companies, Supplementary Insurance Information [Line Items]
SEC Schedule, 12-16, Insurance Companies, Supplementary Insurance Information, Deferred Policy Acquisition Cost		$ 5,543	$ 4,617
SEC Schedule, 12-16, Insurance Companies, Supplementary Insurance Information, Liability for Future Policy Benefit, Loss, Claim and Loss Expense		88,463	71,504
SEC Schedule, 12-16, Insurance Companies, Supplementary Insurance Information, Other Policy Claim and Benefit Payable		(2,693)	(2,730)
SEC Schedule, 12-16, Insurance Companies, Supplementary Insurance Information, Premium Revenue		17,843	15,085	$ 13,078
SEC Schedule, 12-16, Insurance Companies, Supplementary Insurance Information, Net Investment Income		4,416	3,591	3,161
SEC Schedule, 12-16, Insurance Companies, Supplementary Insurance Information, Benefit, Claim, Loss and Settlement Expenses		17,958	14,674	12,955
SEC Schedule, 12-16, Insurance Companies, Supplementary Insurance Information, Amortization of Deferred Policy Acquisition Cost		391	348	337
SEC Schedule, 12-16, Insurance Companies, Supplementary Insurance Information, Other Operating Expense	[1]	(2,822)	(2,395)	(2,207)
SEC Schedule, 12-16, Insurance Companies, Supplementary Insurance Information, Unearned Premium	[2]	206	249
Supplementary Insurance Information Market Risk Benefits Remeasurement Gains Losses		(44)	(10)	10
Deferred policy acquisition costs		5,543	4,617
Life Insurance Product Line [Member] | Americas [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			2,191
SEC Schedule, 12-16, Insurance Companies, Supplementary Insurance Information, Liability for Future Policy Benefit, Loss, Claim and Loss Expense		16,567	14,875
SEC Schedule, 12-16, Insurance Companies, Supplementary Insurance Information, Other Policy Claim and Benefit Payable		(883)	(909)
SEC Schedule, 12-16, Insurance Companies, Supplementary Insurance Information, Premium Revenue		7,500	7,023	6,590
SEC Schedule, 12-16, Insurance Companies, Supplementary Insurance Information, Net Investment Income		881	778	900
SEC Schedule, 12-16, Insurance Companies, Supplementary Insurance Information, Benefit, Claim, Loss and Settlement Expenses		6,856	6,578	6,464
SEC Schedule, 12-16, Insurance Companies, Supplementary Insurance Information, Amortization of Deferred Policy Acquisition Cost		174	145	144
SEC Schedule, 12-16, Insurance Companies, Supplementary Insurance Information, Other Operating Expense	[1]	(873)	(782)	(762)
SEC Schedule, 12-16, Insurance Companies, Supplementary Insurance Information, Unearned Premium	[2]	0	0
Supplementary Insurance Information Market Risk Benefits Remeasurement Gains Losses		0	0	0
Deferred policy acquisition costs		2,986
Life Insurance Product Line [Member] | CANADA
SEC Schedule, 12-16, Insurance Companies, Supplementary Insurance Information [Line Items]
SEC Schedule, 12-16, Insurance Companies, Supplementary Insurance Information, Deferred Policy Acquisition Cost			173
SEC Schedule, 12-16, Insurance Companies, Supplementary Insurance Information, Liability for Future Policy Benefit, Loss, Claim and Loss Expense		4,411	4,776
SEC Schedule, 12-16, Insurance Companies, Supplementary Insurance Information, Other Policy Claim and Benefit Payable		(389)	(373)
SEC Schedule, 12-16, Insurance Companies, Supplementary Insurance Information, Premium Revenue		1,291	1,215	1,219
SEC Schedule, 12-16, Insurance Companies, Supplementary Insurance Information, Net Investment Income		256	246	250
SEC Schedule, 12-16, Insurance Companies, Supplementary Insurance Information, Benefit, Claim, Loss and Settlement Expenses		1,184	1,153	1,127
SEC Schedule, 12-16, Insurance Companies, Supplementary Insurance Information, Amortization of Deferred Policy Acquisition Cost		11	12	17
SEC Schedule, 12-16, Insurance Companies, Supplementary Insurance Information, Other Operating Expense	[1]	(226)	(218)	(227)
SEC Schedule, 12-16, Insurance Companies, Supplementary Insurance Information, Unearned Premium	[2]	0	0
Supplementary Insurance Information Market Risk Benefits Remeasurement Gains Losses		0	0	0
Deferred policy acquisition costs		157
Life Insurance Product Line [Member] | EMEA [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			347
SEC Schedule, 12-16, Insurance Companies, Supplementary Insurance Information, Liability for Future Policy Benefit, Loss, Claim and Loss Expense		2,289	2,542
SEC Schedule, 12-16, Insurance Companies, Supplementary Insurance Information, Other Policy Claim and Benefit Payable		(879)	(670)
SEC Schedule, 12-16, Insurance Companies, Supplementary Insurance Information, Premium Revenue		2,002	1,775	1,736
SEC Schedule, 12-16, Insurance Companies, Supplementary Insurance Information, Net Investment Income		112	91	76
SEC Schedule, 12-16, Insurance Companies, Supplementary Insurance Information, Benefit, Claim, Loss and Settlement Expenses		1,853	1,670	1,571
SEC Schedule, 12-16, Insurance Companies, Supplementary Insurance Information, Amortization of Deferred Policy Acquisition Cost		49	50	38
SEC Schedule, 12-16, Insurance Companies, Supplementary Insurance Information, Other Operating Expense	[1]	(203)	(167)	(163)
SEC Schedule, 12-16, Insurance Companies, Supplementary Insurance Information, Unearned Premium	[2]	0	0
Supplementary Insurance Information Market Risk Benefits Remeasurement Gains Losses		0	0	0
Deferred policy acquisition costs		354
Life Insurance Product Line [Member] | Asia Pacific [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			1,098
SEC Schedule, 12-16, Insurance Companies, Supplementary Insurance Information, Liability for Future Policy Benefit, Loss, Claim and Loss Expense		4,193	4,255
SEC Schedule, 12-16, Insurance Companies, Supplementary Insurance Information, Other Policy Claim and Benefit Payable		(544)	(577)
SEC Schedule, 12-16, Insurance Companies, Supplementary Insurance Information, Premium Revenue		3,014	2,785	2,650
SEC Schedule, 12-16, Insurance Companies, Supplementary Insurance Information, Net Investment Income		257	242	199
SEC Schedule, 12-16, Insurance Companies, Supplementary Insurance Information, Benefit, Claim, Loss and Settlement Expenses		2,616	2,284	2,292
SEC Schedule, 12-16, Insurance Companies, Supplementary Insurance Information, Amortization of Deferred Policy Acquisition Cost		58	59	67
SEC Schedule, 12-16, Insurance Companies, Supplementary Insurance Information, Other Operating Expense	[1]	(340)	(335)	(329)
SEC Schedule, 12-16, Insurance Companies, Supplementary Insurance Information, Unearned Premium	[2]	0	0
Supplementary Insurance Information Market Risk Benefits Remeasurement Gains Losses		0	0	0
Deferred policy acquisition costs		1,178
Insurance, Other [Member] | Americas [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			552
SEC Schedule, 12-16, Insurance Companies, Supplementary Insurance Information, Liability for Future Policy Benefit, Loss, Claim and Loss Expense		25,327	24,258
SEC Schedule, 12-16, Insurance Companies, Supplementary Insurance Information, Other Policy Claim and Benefit Payable		0	(25)
SEC Schedule, 12-16, Insurance Companies, Supplementary Insurance Information, Premium Revenue		2,986	1,521	66
SEC Schedule, 12-16, Insurance Companies, Supplementary Insurance Information, Net Investment Income		1,277	1,151	1,059
SEC Schedule, 12-16, Insurance Companies, Supplementary Insurance Information, Benefit, Claim, Loss and Settlement Expenses		3,836	2,176	663
SEC Schedule, 12-16, Insurance Companies, Supplementary Insurance Information, Amortization of Deferred Policy Acquisition Cost		52	48	58
SEC Schedule, 12-16, Insurance Companies, Supplementary Insurance Information, Other Operating Expense	[1]	(406)	(240)	(170)
SEC Schedule, 12-16, Insurance Companies, Supplementary Insurance Information, Unearned Premium	[2]	206	249
Supplementary Insurance Information Market Risk Benefits Remeasurement Gains Losses		(44)	(10)	10
Deferred policy acquisition costs		506
Insurance, Other [Member] | CANADA
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
SEC Schedule, 12-16, Insurance Companies, Supplementary Insurance Information, Liability for Future Policy Benefit, Loss, Claim and Loss Expense		4,545	31
SEC Schedule, 12-16, Insurance Companies, Supplementary Insurance Information, Other Policy Claim and Benefit Payable		(8)	(5)
SEC Schedule, 12-16, Insurance Companies, Supplementary Insurance Information, Premium Revenue		166	90	95
SEC Schedule, 12-16, Insurance Companies, Supplementary Insurance Information, Net Investment Income		147	4	5
SEC Schedule, 12-16, Insurance Companies, Supplementary Insurance Information, Benefit, Claim, Loss and Settlement Expenses		307	48	74
SEC Schedule, 12-16, Insurance Companies, Supplementary Insurance Information, Amortization of Deferred Policy Acquisition Cost		0	0	0
SEC Schedule, 12-16, Insurance Companies, Supplementary Insurance Information, Other Operating Expense	[1]	(2)	(6)	(5)
SEC Schedule, 12-16, Insurance Companies, Supplementary Insurance Information, Unearned Premium	[2]	0	0
Supplementary Insurance Information Market Risk Benefits Remeasurement Gains Losses		0	0	0
Deferred policy acquisition costs		20
Insurance, Other [Member] | EMEA [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
SEC Schedule, 12-16, Insurance Companies, Supplementary Insurance Information, Liability for Future Policy Benefit, Loss, Claim and Loss Expense		7,132	5,490
SEC Schedule, 12-16, Insurance Companies, Supplementary Insurance Information, Other Policy Claim and Benefit Payable		0	(163)
SEC Schedule, 12-16, Insurance Companies, Supplementary Insurance Information, Premium Revenue		660	458	486
SEC Schedule, 12-16, Insurance Companies, Supplementary Insurance Information, Net Investment Income		317	209	151
SEC Schedule, 12-16, Insurance Companies, Supplementary Insurance Information, Benefit, Claim, Loss and Settlement Expenses		592	273	383
SEC Schedule, 12-16, Insurance Companies, Supplementary Insurance Information, Amortization of Deferred Policy Acquisition Cost		0	0	0
SEC Schedule, 12-16, Insurance Companies, Supplementary Insurance Information, Other Operating Expense	[1]	(73)	(65)	(61)
SEC Schedule, 12-16, Insurance Companies, Supplementary Insurance Information, Unearned Premium	[2]	0	0
Supplementary Insurance Information Market Risk Benefits Remeasurement Gains Losses		0	0	0
Deferred policy acquisition costs		0
Insurance, Other [Member] | Asia Pacific [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			250
SEC Schedule, 12-16, Insurance Companies, Supplementary Insurance Information, Liability for Future Policy Benefit, Loss, Claim and Loss Expense		19,886	13,288
SEC Schedule, 12-16, Insurance Companies, Supplementary Insurance Information, Other Policy Claim and Benefit Payable		0	(2)
SEC Schedule, 12-16, Insurance Companies, Supplementary Insurance Information, Premium Revenue		224	218	236
SEC Schedule, 12-16, Insurance Companies, Supplementary Insurance Information, Net Investment Income		656	486	270
SEC Schedule, 12-16, Insurance Companies, Supplementary Insurance Information, Benefit, Claim, Loss and Settlement Expenses		566	431	349
SEC Schedule, 12-16, Insurance Companies, Supplementary Insurance Information, Amortization of Deferred Policy Acquisition Cost		45	33	13
SEC Schedule, 12-16, Insurance Companies, Supplementary Insurance Information, Other Operating Expense	[1]	(91)	(73)	(67)
SEC Schedule, 12-16, Insurance Companies, Supplementary Insurance Information, Unearned Premium	[2]	0	0
Supplementary Insurance Information Market Risk Benefits Remeasurement Gains Losses		0	0	0
Deferred policy acquisition costs		324
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			6
SEC Schedule, 12-16, Insurance Companies, Supplementary Insurance Information, Liability for Future Policy Benefit, Loss, Claim and Loss Expense		4,113	1,989
SEC Schedule, 12-16, Insurance Companies, Supplementary Insurance Information, Other Policy Claim and Benefit Payable		(6)	(6)
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		513	384	251
SEC Schedule, 12-16, Insurance Companies, Supplementary Insurance Information, Benefit, Claim, Loss and Settlement Expenses		148	61	32
SEC Schedule, 12-16, Insurance Companies, Supplementary Insurance Information, Amortization of Deferred Policy Acquisition Cost		2	1	0
SEC Schedule, 12-16, Insurance Companies, Supplementary Insurance Information, Other Operating Expense	[1]	(612)	(509)	(423)
SEC Schedule, 12-16, Insurance Companies, Supplementary Insurance Information, Unearned Premium	[2]	0	0
Supplementary Insurance Information Market Risk Benefits Remeasurement Gains Losses		0	0	$ 0
Deferred policy acquisition costs		$ 18	$ 6

[1] Includes policy acquisition costs and other insurance expenses (excluding amortization of DAC), other operating expenses and interest expense

[2] Market risk benefits assets and liabilities are presented net.