CONSOLIDATED CONDENSED STATEMENTS OF COMPREHENSIVE INCOME (LOSS) (Unaudited) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2025	Sep. 30, 2024	Sep. 30, 2025	Sep. 30, 2024
Statement of Comprehensive Income [Abstract]
Net income	$ 536	$ 425	$ 1,344	$ 1,305
Other comprehensive income (loss), after tax
Net unrealized gains (losses) on investments with an allowance for credit losses	3	(3)	1	(1)
Net unrealized gains on other investments	556	1,264	912	803
Total unrealized gains on investments	559	1,261	913	802
Impact of changes in discount rates used to measure long-duration contract liabilities	(150)	(623)	(267)	(9)
Unrealized losses on cash flow hedges		(7)	(6)	(6)
Pension and postretirement benefits	1	9	3	21
Foreign currency translation	(39)	64	128	21
Other comprehensive income (loss)	371	704	771	829
Comprehensive income	907	1,129	2,115	2,134
Amounts attributable to noncontrolling interests	(62)	(83)	(143)	(148)
Total comprehensive income attributable to Loews Corporation	$ 845	$ 1,046	$ 1,972	$ 1,986