v3.19.3
Document and Entity Information
Oct. 28, 2019
Cover [Abstract]  
Entity Registrant Name LOEWS CORP
Entity Address, State or Province NY
Amendment Flag false
Entity Central Index Key 0000060086
Document Type 8-K
Document Period End Date Oct. 28, 2019
Entity Incorporation State Country Code DE
Entity File Number 1-6541
Entity Tax Identification Number 13-2646102
Entity Address, Address Line One 667 Madison Avenue
Entity Address, City or Town New York
Entity Address, Postal Zip Code 10065-8087
City Area Code (212)
Local Phone Number 521-2000
Written Communications false
Soliciting Material false
Pre Commencement Tender Offer false
Pre Commencement Issuer Tender Offer false
Security 12b Title Common stock, $0.01 par value
Trading Symbol L
Security Exchange Name NYSE
Entity Emerging Growth Company false