Schedule I - Condensed Financial Information of Registrant, Balance Sheets (Details) - USD ($) $ in Millions	Dec. 31, 2024	Dec. 31, 2023
Assets:
Investments in securities	$ 51,130	$ 49,369
Other assets	4,181	4,147
Total assets	81,943	79,197
Liabilities and Equity:
Long-term debt	8,939	7,919
Total liabilities	64,006	62,672
Shareholders’ equity	17,066	15,704
Total liabilities and equity	81,943	79,197
Loews Corporation
Assets:
Current assets, principally investment in short-term instruments	2,222	2,149
Investments in securities	1,170	568
Investments in capital stocks of subsidiaries, at equity	15,623	14,889
Other assets	95	76
Total assets	19,110	17,682
Liabilities and Equity:
Current liabilities	143	102
Long-term debt	1,785	1,782
Deferred income tax and other	116	94
Total liabilities	2,044	1,978
Shareholders’ equity	17,066	15,704
Total liabilities and equity	$ 19,110	$ 17,682