Consolidated Condensed Statements of Income - USD ($) shares in Thousands, $ in Millions	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Revenues:
Insurance premiums	$ 7,312	$ 6,988	$ 6,924
Net investment income	1,817	2,182	2,135
Investment gains (losses):
Other-than-temporary impairment losses	(21)	(14)	(81)
Other net investment gains (losses)	(36)	136	131
Total investment gains (losses)	(57)	122	50
Non-insurance warranty revenue (Notes 1 and 13)	1,007	390	361
Operating revenues and other	3,987	4,053	3,635
Total	14,066	13,735	13,105
Expenses:
Insurance claims and policyholders' benefits	5,572	5,310	5,283
Amortization of deferred acquisition costs	1,335	1,233	1,235
Non-insurance warranty expense (Notes 1 and 13)	923	299	271
Operating expenses and other (Note 6)	4,828	4,665	4,844
Interest	574	646	536
Total	13,232	12,153	12,169
Income before income tax	834	1,582	936
Income tax expense	(128)	(170)	(220)
Net income	706	1,412	716
Amounts attributable to noncontrolling interests	(70)	(248)	(62)
Net income attributable to Loews Corporation	$ 636	$ 1,164	$ 654
Basic net income per common share	$ 1.99	$ 3.46	$ 1.93
Diluted net income per common share	$ 1.99	$ 3.45	$ 1.93
Basic weighted average number of shares outstanding	319,060	336,610	337,950
Diluted weighted average number of shares outstanding	319,930	337,500	338,310