CONSOLIDATED CONDENSED STATEMENTS OF OPERATIONS - USD ($) shares in Thousands, $ in Millions		3 Months Ended		9 Months Ended
		Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020
Revenues:
Insurance premiums		$ 2,059	$ 1,953	$ 6,056	$ 5,672
Net investment income		483	540	1,649	1,347
Investment gains (losses) (Note 2)	[1]	22	46	657	(1,312)
Non-insurance warranty revenue		357	317	1,054	926
Operating revenues and other		450	609	1,580	2,241
Total		3,371	3,465	10,996	8,874
Expenses:
Insurance claims and policyholders' benefits		1,632	1,616	4,684	4,683
Amortization of deferred acquisition costs		368	360	1,084	1,046
Non-insurance warranty expense		330	293	973	859
Operating expenses and other		638	876	2,208	3,894
Interest		99	137	324	404
Total		3,067	3,282	9,273	10,886
Income (loss) before income tax		304	183	1,723	(2,012)
Income tax (expense) benefit		(58)	(21)	(391)	284
Net income (loss)		246	162	1,332	(1,728)
Amounts attributable to noncontrolling interests		(26)	(23)	(97)	400
Net income (loss) attributable to Loews Corporation		$ 220	$ 139	$ 1,235	$ (1,328)
Basic net income (loss) per share (in dollars per share)		$ 0.86	$ 0.50	$ 4.71	$ (4.70)
Diluted net income (loss) per share (in dollars per share)		$ 0.85	$ 0.50	$ 4.70	$ (4.70)
Weighted average shares outstanding:
Shares of common stock (in shares)		256,760	279,400	262,270	282,630
Dilutive potential shares of common stock (in shares)		540	90	500
Total weighted average shares outstanding assuming dilution (in shares)		257,300	279,490	262,770	282,630

[1] During the three and nine months ended September 30, 2021, $2 of investment losses and $15 of investment gains were recognized due to the change in fair value of non-redeemable preferred stock still held as of September 30, 2021. During the three and nine months ended September 30, 2020, $25 of investment gains and $44 of investment losses were recognized due to the change in fair value of non-redeemable preferred stock still held as of September 30, 2020.