CONSOLIDATED CONDENSED STATEMENTS OF EQUITY (Unaudited) - USD ($) $ in Millions	Total	Cumulative Effect, Period of Adoption, Adjustment	As Reported	Common Stock	Common Stock As Reported	Additional Paid-in Capital	Additional Paid-in Capital As Reported	Retained Earnings	Retained Earnings Cumulative Effect, Period of Adoption, Adjustment	Retained Earnings As Reported	Accumulated Other Comprehensive Income (Loss)	Accumulated Other Comprehensive Income (Loss) Cumulative Effect, Period of Adoption, Adjustment	Accumulated Other Comprehensive Income (Loss) As Reported	Common Stock Held in Treasury	Common Stock Held in Treasury As Reported	Noncontrolling Interests	Noncontrolling Interests Cumulative Effect, Period of Adoption, Adjustment	Noncontrolling Interests As Reported
Balance at beginning of period at Dec. 31, 2021	$ 17,471	$ (1,704)	$ 19,175	$ 2	$ 2	$ 2,885	$ 2,885	$ 14,754	$ (22)	$ 14,776	$ (1,320)	$ (1,506)	$ 186	$ (3)	$ (3)	$ 1,153	$ (176)	$ 1,329
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net Income (loss)	512		715					467								45
Other comprehensive income (loss)	(2,619)		(4,435)								(2,359)					(260)
Dividends paid	(133)							(46)
Dividends paid																(87)
Purchase of subsidiary stock from noncontrolling interests	(66)					4										(70)
Purchases of Loews Corporation treasury stock	(614)													(614)
Stock-based compensation	11					(6)										17
Other	1					3		(3)						1
Balance at end of period at Sep. 30, 2022	14,563			2		2,886		15,172			(3,679)			(616)		798
Balance at beginning of period at Jun. 30, 2022	15,714	(507)	16,221	2	2	2,869	2,869	15,210	(51)	15,261	(2,913)	(403)	(2,510)	(386)	(386)	932	(53)	985
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net Income (loss)	(27)		143					(22)								(5)
Other comprehensive income (loss)	(839)		(1,425)								(766)					(73)
Dividends paid	(23)							(15)
Dividends paid																(8)
Purchase of subsidiary stock from noncontrolling interests	(45)					5										(50)
Purchases of Loews Corporation treasury stock	(230)													(230)
Stock-based compensation	9					8										1
Other	4					4		(1)								1
Balance at end of period at Sep. 30, 2022	14,563			2		2,886		15,172			(3,679)			(616)		798
Balance at beginning of period at Dec. 31, 2022	15,201	$ (277)	$ 15,478	2	$ 2	2,748	$ 2,748	14,931	$ (213)	$ 15,144	(3,320)	$ (36)	$ (3,284)	(12)	$ (12)	852	$ (28)	$ 880
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net Income (loss)	1,068							988								80
Other comprehensive income (loss)	(103)										(92)					(11)
Dividends paid	(108)							(43)
Dividends paid																(65)
Purchase of subsidiary stock from noncontrolling interests	(203)					27					(61)					(169)
Purchases of Loews Corporation treasury stock	(711)													(711)
Stock-based compensation	16					(7)										23
Other	(2)					(4)		1						1
Balance at end of period at Sep. 30, 2023	15,158			2		2,764		15,877			(3,473)			(722)		710
Balance at beginning of period at Jun. 30, 2023	15,470			2		2,728		15,637			(3,160)			(604)		867
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net Income (loss)	276							253								23
Other comprehensive income (loss)	(283)										(252)					(31)
Dividends paid	(24)							(14)
Dividends paid																(10)
Purchase of subsidiary stock from noncontrolling interests	(177)					27					(61)					(143)
Purchases of Loews Corporation treasury stock	(118)													(118)
Stock-based compensation	11					10										1
Other	3					(1)		1								3
Balance at end of period at Sep. 30, 2023	$ 15,158			$ 2		$ 2,764		$ 15,877			$ (3,473)			$ (722)		$ 710