Schedule I - Condensed Financial Information of Registrant, Balance Sheets (Details) - USD ($) $ in Millions	Dec. 31, 2021	Dec. 31, 2020
ASSETS [Abstract]
Estimated Fair Value	$ 44,380	$ 44,646
Other assets	3,344	3,069
Total assets	81,626	80,236
Liabilities and Equity:
Long term debt	8,986	10,072
Total liabilities	62,451	61,055
Shareholders' equity	17,846	17,860
Total liabilities and equity	81,626	80,236
Loews Corporation
ASSETS [Abstract]
Current assets, principally investment in short term instruments	2,818	2,766
Estimated Fair Value	734	775
Investment in joint ventures	16,794	16,861
Other assets	20	22
Total assets	20,366	20,424
Liabilities and Equity:
Current liabilities	92	63
Long term debt	2,278	2,276
Deferred income tax and other	150	225
Total liabilities	2,520	2,564
Shareholders' equity	17,846	17,860
Total liabilities and equity	$ 20,366	$ 20,424