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, 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	792							735								57
Other comprehensive income (loss)	180										160					20
Dividends paid	(84)							(29)
Dividends paid																(55)
Purchase of subsidiary stock from noncontrolling interests	(26)															(26)
Purchases of Loews Corporation treasury stock	(593)													(593)
Stock-based compensation	5					(17)										22
Other	(5)					(3)								1		(3)
Balance at end of period at Jun. 30, 2023	15,470			2		2,728		15,637			(3,160)			(604)		867
Balance at beginning of period at Mar. 31, 2023	15,314			2		2,716		15,293			(3,062)			(498)		863
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	388							360								28
Other comprehensive income (loss)	(109)										(98)					(11)
Dividends paid	(25)							(14)
Dividends paid																(11)
Purchase of subsidiary stock from noncontrolling interests	(2)															(2)
Purchases of Loews Corporation treasury stock	(107)													(107)
Stock-based compensation	9					9
Other	2					3		(2)						1
Balance at end of period at Jun. 30, 2023	15,470			2		2,728		15,637			(3,160)			(604)		867
Balance at beginning of period at Dec. 31, 2023	16,525			2		2,589		15,617			(2,497)			(7)		821
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	880							826								54
Other comprehensive income (loss)	125										114					11
Dividends paid	(93)							(28)
Dividends paid																(65)
Purchase of subsidiary stock from noncontrolling interests	(20)															(20)
Purchases of Loews Corporation treasury stock	(199)													(199)
Stock-based compensation	(3)					(22)										19
Other	(14)					(11)										(3)
Balance at end of period at Jun. 30, 2024	17,201			2		2,556		16,415			(2,383)			(206)		817
Balance at beginning of period at Mar. 31, 2024	16,998			2		2,547		16,060			(2,401)			(24)		814
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	395							369								26
Other comprehensive income (loss)	24										21					3
Dividends paid	(23)							(14)
Dividends paid																(9)
Purchase of subsidiary stock from noncontrolling interests	(20)															(20)
Purchases of Loews Corporation treasury stock	(182)													(182)
Stock-based compensation	11					11
Other	(2)					(2)					(3)					3
Balance at end of period at Jun. 30, 2024	$ 17,201			$ 2		$ 2,556		$ 16,415			$ (2,383)			$ (206)		$ 817