REINSURANCE Effect of Reinsurance on Premiums and Benefits and Claims (Detail) - USD ($) $ in Millions		12 Months Ended
		Dec. 31, 2025	Dec. 31, 2024	Dec. 31, 2023
Reinsurance Disclosures [Abstract]
Earned premiums, direct		$ 13,760	$ 13,562	$ 14,318
Earned premiums, ceded		(368)	(284)	(404)
Earned premiums, assumed		156	162	209
Net earned premiums	[1]	13,548	13,440	14,123
Benefits and claims, excluding reserve remeasurement, direct		8,174	8,098	8,599
Benefits and claims, excluding reserve remeasurement, ceded		(249)	(153)	(147)
Benefits and claims, excluding reserve remeasurement, assumed		62	63	142
Benefits and claims, excluding reserve remeasurement		7,987	8,008	8,594
Reserve remeasurement (gains) losses, direct		(683)	(558)	(394)
Reserve remeasurement (gains) losses, ceded		(11)	0	11
Reserve remeasurement (gains) losses		(694)	(558)	(383)
Total benefits and claims, net		$ 7,293	$ 7,450	$ 8,211

[1] Includes a gain (loss) of $(52), $(81) and $20 in 2025, 2024 and 2023, respectively, related to remeasurement of the deferred profit liability for limited-payment contracts.