CONSOLIDATED CONDENSED STATEMENTS OF COMPREHENSIVE INCOME (LOSS) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2022	Jun. 30, 2021	Jun. 30, 2022	Jun. 30, 2021
Statement of Comprehensive Income [Abstract]
Net income	$ 202	$ 793	$ 572	$ 1,086
Other comprehensive income (loss), after tax
Net unrealized losses on investments with an allowance for credit losses	(2)		(6)
Net unrealized gains (losses) on other investments	(1,346)	300	(2,957)	(327)
Total unrealized gains (losses) on investments	(1,348)	300	(2,963)	(327)
Unrealized gains on cash flow hedges	6	8	24	12
Pension and postretirement benefits	5	7	12	16
Foreign currency translation	(68)	11	(83)	14
Other comprehensive income (loss)	(1,405)	326	(3,010)	(285)
Comprehensive income (loss)	(1,203)	1,119	(2,438)	801
Amounts attributable to noncontrolling interests	124	(72)	260	(40)
Total comprehensive income (loss) attributable to Loews Corporation	$ (1,079)	$ 1,047	$ (2,178)	$ 761