Liability For Future Policy Benefits (Revenue and Interest Expense) (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2026	Mar. 31, 2025
Benefit reserves \| Retirement
Liability for Future Policy Benefit, Activity [Line Items]
Revenue	$ 3,236	$ 1,679
Interest expense	918	903
Benefit reserves \| Individual Life \| Term Life
Liability for Future Policy Benefit, Activity [Line Items]
Revenue	486	468
Interest expense	106	105
Benefit reserves \| U.S. Legacy Products \| Guaranteed Universal Life
Liability for Future Policy Benefit, Activity [Line Items]
Revenue	0	0
Interest expense	0	0
Benefit reserves \| International Businesses
Liability for Future Policy Benefit, Activity [Line Items]
Revenue	2,705	2,970
Interest expense	823	805
Benefit reserves \| Other businesses
Liability for Future Policy Benefit, Activity [Line Items]
Revenue	151	141
Interest expense	133	128
Benefit reserves \| Total
Liability for Future Policy Benefit, Activity [Line Items]
Revenue	6,578	5,258
Interest expense	1,980	1,941
Deferred profit liability \| Retirement
Liability for Future Policy Benefit, Activity [Line Items]
Revenue	53	45
Interest expense	56	58
Deferred profit liability \| Individual Life \| Term Life
Liability for Future Policy Benefit, Activity [Line Items]
Revenue	0	0
Interest expense	0	0
Deferred profit liability \| U.S. Legacy Products \| Guaranteed Universal Life
Liability for Future Policy Benefit, Activity [Line Items]
Revenue	0	0
Interest expense	0	0
Deferred profit liability \| International Businesses
Liability for Future Policy Benefit, Activity [Line Items]
Revenue	(182)	(230)
Interest expense	93	84
Deferred profit liability \| Other businesses
Liability for Future Policy Benefit, Activity [Line Items]
Revenue	(2)	0
Interest expense	2	2
Deferred profit liability \| Total
Liability for Future Policy Benefit, Activity [Line Items]
Revenue	(131)	(185)
Interest expense	151	144
Additional insurance reserves \| Retirement
Liability for Future Policy Benefit, Activity [Line Items]
Revenue	45	0
Interest expense	1	0
Additional insurance reserves \| Individual Life \| Term Life
Liability for Future Policy Benefit, Activity [Line Items]
Revenue	0	0
Interest expense	0	0
Additional insurance reserves \| U.S. Legacy Products \| Guaranteed Universal Life
Liability for Future Policy Benefit, Activity [Line Items]
Revenue	385	357
Interest expense	151	139
Additional insurance reserves \| International Businesses
Liability for Future Policy Benefit, Activity [Line Items]
Revenue	51	0
Interest expense	0	0
Additional insurance reserves \| Other businesses
Liability for Future Policy Benefit, Activity [Line Items]
Revenue	547	478
Interest expense	3	5
Additional insurance reserves \| Total
Liability for Future Policy Benefit, Activity [Line Items]
Revenue	1,028	835
Interest expense	155	144
Revenues \| Retirement
Liability for Future Policy Benefit, Activity [Line Items]
Revenue	3,334	1,724
Revenues \| Individual Life \| Term Life
Liability for Future Policy Benefit, Activity [Line Items]
Revenue	486	468
Revenues \| U.S. Legacy Products \| Guaranteed Universal Life
Liability for Future Policy Benefit, Activity [Line Items]
Revenue	385	357
Revenues \| International Businesses
Liability for Future Policy Benefit, Activity [Line Items]
Revenue	2,574	2,740
Revenues \| Other businesses
Liability for Future Policy Benefit, Activity [Line Items]
Revenue	696	619
Revenues \| Total
Liability for Future Policy Benefit, Activity [Line Items]
Revenue	7,475	5,908
Interest Expense \| Retirement
Liability for Future Policy Benefit, Activity [Line Items]
Interest expense	975	961
Interest Expense \| Individual Life \| Term Life
Liability for Future Policy Benefit, Activity [Line Items]
Interest expense	106	105
Interest Expense \| U.S. Legacy Products \| Guaranteed Universal Life
Liability for Future Policy Benefit, Activity [Line Items]
Interest expense	151	139
Interest Expense \| International Businesses
Liability for Future Policy Benefit, Activity [Line Items]
Interest expense	916	889
Interest Expense \| Other businesses
Liability for Future Policy Benefit, Activity [Line Items]
Interest expense	138	135
Interest Expense \| Total
Liability for Future Policy Benefit, Activity [Line Items]
Interest expense	$ 2,286	$ 2,229