CONSOLIDATED CONDENSED STATEMENTS OF EQUITY - USD ($) $ in Millions	Total	As Reported	Effect of Adoption	Common Stock	Common Stock As Reported	Additional Paid-in Capital	Additional Paid-in Capital As Reported	Retained Earnings	Retained Earnings As Reported	Retained Earnings Effect of Adoption	Accumulated Other Comprehensive Income (Loss)	Accumulated Other Comprehensive Income (Loss) As Reported	Accumulated Other Comprehensive Income (Loss) Effect of Adoption	Common Stock Held in Treasury	Common Stock Held in Treasury As Reported	Noncontrolling Interests	Noncontrolling Interests As Reported	Noncontrolling Interests Effect of Adoption
Balance at beginning of period at Dec. 31, 2021	$ 17,471	$ 19,175	$ (1,704)	$ 2	$ 2	$ 2,885	$ 2,885	$ 14,754	$ 14,776	$ (22)	$ (1,320)	$ 186	$ (1,506)	$ (3)	$ (3)	$ 1,153	$ 1,329	$ (176)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	352	370	(18)					322								30
Other comprehensive income (loss)	(1,002)	(1,605)	603								(896)					(106)
Dividends paid	(84)							(16)
Dividends paid																(68)
Purchase of subsidiary stock from noncontrolling interests	(21)					(1)										(20)
Purchases of Loews Corporation treasury stock	(129)													(129)
Stock-based compensation	(10)					(25)										15
Other	(1)							(1)
Balance at end of period at Mar. 31, 2022	16,576			2		2,859		15,059			(2,216)			(132)		1,004
Balance at beginning of period at Dec. 31, 2022	15,201	$ 15,478	$ (277)	2	$ 2	2,748	$ 2,748	14,931	$ 15,144	$ (213)	(3,320)	$ (3,284)	$ (36)	(12)	$ (12)	852	$ 880	$ (28)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	404							375								29
Other comprehensive income (loss)	289										258					31
Dividends paid	(59)							(15)
Dividends paid																(44)
Purchase of subsidiary stock from noncontrolling interests	(24)															(24)
Purchases of Loews Corporation treasury stock	(486)													(486)
Stock-based compensation	(4)					(26)										22
Other	(7)					(6)		2								(3)
Balance at end of period at Mar. 31, 2023	$ 15,314			$ 2		$ 2,716		$ 15,293			$ (3,062)			$ (498)		$ 863