CONSOLIDATED STATEMENTS OF EQUITY - 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	891							822								69
Other comprehensive income (loss)	(2,219)										(2,000)					(219)
Dividends paid	(159)							(61)								(98)
Purchase of subsidiary stock from noncontrolling interests	(66)					4										(70)
Purchases of Loews Corporation treasury stock	(738)													(738)
Retirement of treasury stock	0					(146)		(583)						729
Stock-based compensation	21					3										18
Other	0					2		(1)								(1)
Balance at end of period at Dec. 31, 2022	15,201			2		2,748		14,931			(3,320)			(12)		852
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	1,545							1,434								111
Other comprehensive income (loss)	961										884					77
Dividends paid	(131)							(57)								(74)
Purchase of subsidiary stock from noncontrolling interests	(202)					27					(61)					(168)
Purchases of Loews Corporation treasury stock	(852)													(852)
Retirement of treasury stock	0					(164)		(693)						857
Stock-based compensation	26					3										23
Other	(23)					(25)		2
Balance at end 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	1,494							1,414								80
Other comprehensive income (loss)	687										630					57
Dividends paid	(140)							(55)								(85)
Purchase of subsidiary stock from noncontrolling interests	(20)															(20)
Purchases of Loews Corporation treasury stock	(617)													(617)
Retirement of treasury stock	0					(89)		(517)						606
Stock-based compensation	19					(1)										20
Other	(11)					(9)										(2)
Balance at end of period at Dec. 31, 2024	$ 17,937			$ 2		$ 2,490		$ 16,459			$ (1,867)			$ (18)		$ 871