Insurance Liabilities (Future Policy Benefits Information by Product) (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2025	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Liability for Future Policy Benefit, Expected Future Policy Benefit [Roll Forward]
Liability for Future Policy Benefit, before Reinsurance	$ 31,682	$ 31,085
Future policy benefits	31,682	31,085
Term and Whole Life Insurance
Liability for Future Policy Benefit, Expected Net Premium [Roll Forward]
Liability for Future Policy Benefit, Expected Net Premium, before Reinsurance, after Discount Rate Change	2,462	2,758	$ 2,899	$ 2,804
Liability for Future Policy Benefit, Expected Net Premium, Original Discount Rate, before Cash Flow and Reinsurance	2,705	3,110	3,162	3,146
Liability for Future Policy Benefit, Expected Net Premium, Cumulative Increase (Decrease) from Model Refinements		3	4	0
Liability for Future Policy Benefit, Expected Net Premium, Cumulative Increase (Decrease) from Cash Flow Change		(115)	146	206
Liability for Future Policy Benefit, Expected Net Premium, Cumulative Increase (Decrease) of Actual Variance from Expected Experience		(46)	8	(17)
Liability for Future Policy Benefit, Expected Net Premium, Original Discount Rate, before Reinsurance, after Cash Flow Change		2,952	3,320	3,335
Liability for Future Policy Benefit, Expected Net Premium, Issuance	14	67	93
Liability for Future Policy Benefit, Expected Net Premium, Interest Income	102	110	108
Liability for Future Policy Benefit, Expected Net Premium, Net Premium Collected	(363)	(387)	(374)
AOCI, Liability for Future Policy Benefit, Expected Net Premium, before Tax	(243)	(352)	(263)
Liability for Future Policy Benefit, Expected Future Policy Benefit [Roll Forward]
Liability for Future Policy Benefit, Expected Future Policy Benefit, before Reinsurance, after Discount Rate Change	4,984	5,245	5,385	5,172
Liability for Future Policy Benefit, Expected Future Policy Benefit, Original Discount Rate, before Cash Flow and Reinsurance	5,446	5,908	5,905	5,816
Liability for Future Policy Benefit, Expected Future Policy Benefit, Cumulative Increase (Decrease) from Model Refinements		2	10	0
Liability for Future Policy Benefit, Expected Future Policy Benefit, Cumulative Increase (Decrease) from Cash Flow Change		(128)	235	296
Liability for Future Policy Benefit, Expected Future Policy Benefit, Cumulative Increase (Decrease) of Actual Variance from Expected Experience		(73)	(5)	(15)
Liability for Future Policy Benefit, Expected Future Benefit, Original Discount Rate, before Reinsurance, after Cash Flow Change		5,709	6,145	6,097
Liability for Future Policy Benefit, Expected Future Policy Benefit, Issuance	14	72	99
Liability for Future Policy Benefit, Expected Future Policy Benefit, Interest Expense	205	213	211
Liability for Future Policy Benefit, Expected Future Policy Benefit, Benefit Payment	(482)	(522)	(502)
AOCI, Liability for Future Policy Benefit, Expected Future Policy Benefit, before Tax	(462)	(663)	(520)
Liability for Future Policy Benefit, before Reinsurance	2,522	2,487	2,486
Liability for Future Policy Benefit, Reinsurance Recoverable, after Allowance	15	19	24
Future policy benefits	$ 2,507	$ 2,468	$ 2,462
Liability for Future Policy Benefit, Weighted-Average Duration	7 years 2 months 12 days	7 years 7 months 6 days	8 years 9 months 18 days
Liability for Future Policy Benefit, Weighted-Average Interest Accretion Rate	3.90%	3.92%	3.91%
Liability for Future Policy Benefit, Current Weighted-Average Discount Rate	5.01%	5.42%	4.94%
Liability for Future Policy Benefit, Gross Premium Income	$ 519	$ 563	$ 595
Liability for Future Policy Benefit, Expected Future Gross Premium, Undiscounted, before Reinsurance	4,959	5,714	5,999
Liability for Future Policy Benefit, Expected Future Gross Premium, Discounted, before Reinsurance	3,738	4,244	4,535
Liability for Future Policy Benefit, Expected Future Policy Benefit, Undiscounted, before Reinsurance	7,284	8,031	8,148
Liability for Future Policy Benefit, Expected Future Policy Benefit, Discounted, before Reinsurance	5,446	5,908	5,905
Income Annuities
Liability for Future Policy Benefit, Expected Net Premium [Roll Forward]
Liability for Future Policy Benefit, Expected Net Premium, before Reinsurance, after Discount Rate Change	0	0	0	0
Liability for Future Policy Benefit, Expected Net Premium, Original Discount Rate, before Cash Flow and Reinsurance	0	0	0	0
Liability for Future Policy Benefit, Expected Net Premium, Cumulative Increase (Decrease) from Model Refinements		0	0	0
Liability for Future Policy Benefit, Expected Net Premium, Cumulative Increase (Decrease) from Cash Flow Change		0	0	0
Liability for Future Policy Benefit, Expected Net Premium, Cumulative Increase (Decrease) of Actual Variance from Expected Experience		0	0	0
Liability for Future Policy Benefit, Expected Net Premium, Original Discount Rate, before Reinsurance, after Cash Flow Change		0	0	0
Liability for Future Policy Benefit, Expected Net Premium, Issuance	0	0	0
Liability for Future Policy Benefit, Expected Net Premium, Interest Income	0	0	0
Liability for Future Policy Benefit, Expected Net Premium, Net Premium Collected	0	0	0
AOCI, Liability for Future Policy Benefit, Expected Net Premium, before Tax	0	0	0
Liability for Future Policy Benefit, Expected Future Policy Benefit [Roll Forward]
Liability for Future Policy Benefit, Expected Future Policy Benefit, before Reinsurance, after Discount Rate Change	3,947	3,728	3,719	3,469
Liability for Future Policy Benefit, Expected Future Policy Benefit, Original Discount Rate, before Cash Flow and Reinsurance	4,231	4,121	3,993	3,848
Liability for Future Policy Benefit, Expected Future Policy Benefit, Cumulative Increase (Decrease) from Model Refinements		0	0	0
Liability for Future Policy Benefit, Expected Future Policy Benefit, Cumulative Increase (Decrease) from Cash Flow Change		18	(23)	0
Liability for Future Policy Benefit, Expected Future Policy Benefit, Cumulative Increase (Decrease) of Actual Variance from Expected Experience		(37)	0	(21)
Liability for Future Policy Benefit, Expected Future Benefit, Original Discount Rate, before Reinsurance, after Cash Flow Change		4,102	3,970	3,827
Liability for Future Policy Benefit, Expected Future Policy Benefit, Issuance	383	400	369
Liability for Future Policy Benefit, Expected Future Policy Benefit, Interest Expense	156	148	139
Liability for Future Policy Benefit, Expected Future Policy Benefit, Benefit Payment	(410)	(397)	(342)
AOCI, Liability for Future Policy Benefit, Expected Future Policy Benefit, before Tax	(284)	(393)	(274)
Liability for Future Policy Benefit, before Reinsurance	3,947	3,728	3,719
Liability for Future Policy Benefit, Reinsurance Recoverable, after Allowance	32	31	30
Future policy benefits	$ 3,915	$ 3,697	$ 3,689
Liability for Future Policy Benefit, Weighted-Average Duration	7 years 8 months 12 days	7 years 10 months 24 days	8 years 2 months 12 days
Liability for Future Policy Benefit, Weighted-Average Interest Accretion Rate	4.14%	4.04%	3.99%
Liability for Future Policy Benefit, Current Weighted-Average Discount Rate	5.14%	5.48%	4.95%
Liability for Future Policy Benefit, Gross Premium Income	$ 492	$ 485	$ 472
Liability for Future Policy Benefit, Expected Future Gross Premium, Undiscounted, before Reinsurance	0	0	0
Liability for Future Policy Benefit, Expected Future Gross Premium, Discounted, before Reinsurance	0	0	0
Liability for Future Policy Benefit, Expected Future Policy Benefit, Undiscounted, before Reinsurance	5,896	5,759	5,616
Liability for Future Policy Benefit, Expected Future Policy Benefit, Discounted, before Reinsurance	4,231	4,121	3,993
Structured Settlement and Pension Risk Transfer Annuities
Liability for Future Policy Benefit, Expected Net Premium [Roll Forward]
Liability for Future Policy Benefit, Expected Net Premium, before Reinsurance, after Discount Rate Change	0	0	0	0
Liability for Future Policy Benefit, Expected Net Premium, Original Discount Rate, before Cash Flow and Reinsurance	0	0	0	0
Liability for Future Policy Benefit, Expected Net Premium, Cumulative Increase (Decrease) from Model Refinements		0	0	0
Liability for Future Policy Benefit, Expected Net Premium, Cumulative Increase (Decrease) from Cash Flow Change		0	0	0
Liability for Future Policy Benefit, Expected Net Premium, Cumulative Increase (Decrease) of Actual Variance from Expected Experience		0	0	0
Liability for Future Policy Benefit, Expected Net Premium, Original Discount Rate, before Reinsurance, after Cash Flow Change		0	0	0
Liability for Future Policy Benefit, Expected Net Premium, Issuance	0	0	0
Liability for Future Policy Benefit, Expected Net Premium, Interest Income	0	0	0
Liability for Future Policy Benefit, Expected Net Premium, Net Premium Collected	0	0	0
AOCI, Liability for Future Policy Benefit, Expected Net Premium, before Tax	0	0	0
Liability for Future Policy Benefit, Expected Future Policy Benefit [Roll Forward]
Liability for Future Policy Benefit, Expected Future Policy Benefit, before Reinsurance, after Discount Rate Change	6,009	6,118	6,697	6,793
Liability for Future Policy Benefit, Expected Future Policy Benefit, Original Discount Rate, before Cash Flow and Reinsurance	6,635	6,876	7,085	7,410
Liability for Future Policy Benefit, Expected Future Policy Benefit, Cumulative Increase (Decrease) from Model Refinements		4	0	0
Liability for Future Policy Benefit, Expected Future Policy Benefit, Cumulative Increase (Decrease) from Cash Flow Change		22	82	0
Liability for Future Policy Benefit, Expected Future Policy Benefit, Cumulative Increase (Decrease) of Actual Variance from Expected Experience		(29)	(10)	(47)
Liability for Future Policy Benefit, Expected Future Benefit, Original Discount Rate, before Reinsurance, after Cash Flow Change		6,873	7,157	$ 7,363
Liability for Future Policy Benefit, Expected Future Policy Benefit, Issuance	0	0	0
Liability for Future Policy Benefit, Expected Future Policy Benefit, Interest Expense	293	305	314
Liability for Future Policy Benefit, Expected Future Policy Benefit, Benefit Payment	(531)	(586)	(592)
AOCI, Liability for Future Policy Benefit, Expected Future Policy Benefit, before Tax	(626)	(758)	(388)
Liability for Future Policy Benefit, before Reinsurance	6,009	6,118	6,697
Liability for Future Policy Benefit, Reinsurance Recoverable, after Allowance	56	59	65
Future policy benefits	$ 5,953	$ 6,059	$ 6,632
Liability for Future Policy Benefit, Weighted-Average Duration	11 years 6 months	11 years 7 months 6 days	11 years 7 months 6 days
Liability for Future Policy Benefit, Weighted-Average Interest Accretion Rate	4.47%	4.46%	4.46%
Liability for Future Policy Benefit, Current Weighted-Average Discount Rate	5.47%	5.64%	5.03%
Liability for Future Policy Benefit, Gross Premium Income	$ 0	$ 0	$ 0
Liability for Future Policy Benefit, Expected Future Gross Premium, Undiscounted, before Reinsurance	0	0	0
Liability for Future Policy Benefit, Expected Future Gross Premium, Discounted, before Reinsurance	0	0	0
Liability for Future Policy Benefit, Expected Future Policy Benefit, Undiscounted, before Reinsurance	12,820	13,336	13,767
Liability for Future Policy Benefit, Expected Future Policy Benefit, Discounted, before Reinsurance	$ 6,635	$ 6,876	$ 7,085