Debt (Tables)

12 Months Ended

Dec. 31, 2023

Debt Disclosure [Abstract]

Schedule of debt instruments

Debt is composed of the following long-term obligations.

December 31
(In millions)	2023		2022
Short-term debt:
Debenture of CNAF, 7.250%, face amount of $243, due November 15, 2023	$	—	$	243
Senior notes of CNAF:
3.950%, face amount of $550, due May 15, 2024	550		—
Total short-term debt	550		243
Long-term debt:
Senior notes of CNAF:
3.950%, face amount of $550, due May 15, 2024	—		549
4.500%, face amount of $500, due March 1, 2026	500		499
3.450%, face amount of $500, due August 15, 2027	498		497
3.900%, face amount of $500, due May 1, 2029	497		497
2.050%, face amount of $500, due August 15, 2030	496		496
5.500%, face amount of $500, due June 15, 2033	490		—
Total long-term debt	2,481		2,538
Total debt	$	3,031	$	2,781

Maturity of debt

The combined aggregate maturities for debt as of December 31, 2023 are presented in the following table.

(In millions)
2024	$	550
2025	—
2026	500
2027	500
2028	—
Thereafter	1,500
Less: discount	(19)
Total	$	3,031