CONSOLIDATED CONDENSED STATEMENTS OF EQUITY - USD ($) $ in Millions	Total	Common Stock	Additional Paid-in Capital	Retained Earnings	Accumulated Other Comprehensive Income (Loss)	Common Stock Held in Treasury	Noncontrolling Interests
Balance at beginning of period at Dec. 31, 2020	$ 19,181	$ 3	$ 3,133	$ 14,150	$ 581	$ (7)	$ 1,321
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	1,086			1,015			71
Other comprehensive income	(285)				(254)		(31)
Dividends paid ($0.0625 per share)	(76)			(33)
Dividends paid ($0.0625 per share)							(43)
Purchase of subsidiary stock from noncontrolling interests	(18)						(18)
Purchases of Loews Corporation treasury stock	(493)					(493)
Stock-based compensation	7		(9)				16
Other	(4)		(3)				(1)
Balance at end of period at Jun. 30, 2021	19,398	3	3,121	15,132	327	(500)	1,315
Balance at beginning of period at Mar. 31, 2021	18,537	3	3,119	14,394	34	(280)	1,267
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	793			754			39
Other comprehensive income	326				293		33
Dividends paid ($0.0625 per share)	(27)			(16)
Dividends paid ($0.0625 per share)							(11)
Purchase of subsidiary stock from noncontrolling interests	(15)						(15)
Purchases of Loews Corporation treasury stock	(219)					(219)
Stock-based compensation	3		2				1
Other	0					(1)	1
Balance at end of period at Jun. 30, 2021	19,398	3	3,121	15,132	327	(500)	1,315
Balance at beginning of period at Dec. 31, 2021	19,175	2	2,885	14,776	186	(3)	1,329
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	572			518			54
Other comprehensive income	(3,010)				(2,696)		(314)
Dividends paid ($0.0625 per share)	(110)			(31)
Dividends paid ($0.0625 per share)							(79)
Purchase of subsidiary stock from noncontrolling interests	(21)		(1)				(20)
Purchases of Loews Corporation treasury stock	(384)					(384)
Stock-based compensation	2		(14)				16
Other	(3)		(1)	(2)		1	(1)
Balance at end of period at Jun. 30, 2022	16,221	2	2,869	15,261	(2,510)	(386)	985
Balance at beginning of period at Mar. 31, 2022	17,695	2	2,859	15,097	(1,251)	(132)	1,120
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	202			180			22
Other comprehensive income	(1,405)				(1,259)		(146)
Dividends paid ($0.0625 per share)	(26)			(15)
Dividends paid ($0.0625 per share)							(11)
Purchases of Loews Corporation treasury stock	(255)					(255)
Stock-based compensation	12		11				1
Other	(2)		1	(1)		1	(1)
Balance at end of period at Jun. 30, 2022	$ 16,221	$ 2	$ 2,869	$ 15,261	$ (2,510)	$ (386)	$ 985