CONSOLIDATED CONDENSED STATEMENTS OF COMPREHENSIVE INCOME (LOSS) (Unaudited) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2026	Mar. 31, 2025
Statement of Comprehensive Income [Abstract]
Net income	$ 354	$ 392
Other comprehensive income (loss), after tax
Net unrealized losses on investments with an allowance for credit losses	(7)	(3)
Net unrealized gains (losses) on other investments	(425)	282
Total unrealized gains (losses) on investments	(432)	279
Impact of changes in discount rates used to measure long-duration contract liabilities	214	(114)
Unrealized gains (losses) on cash flow hedges	1	(3)
Pension and postretirement benefits	1	1
Foreign currency translation	(35)	37
Other comprehensive income (loss)	(251)	200
Comprehensive income	103	592
Amounts attributable to noncontrolling interests	3	(39)
Total comprehensive income attributable to Loews Corporation	$ 106	$ 553