Debt (Tables)

12 Months Ended

Dec. 31, 2025

Debt Disclosure [Abstract]

Schedule of debt instruments

Debt is composed of the following long-term obligations.

December 31
(In millions)	2025		2024
Long-term debt:
Senior notes of CNAF:
4.500%, face amount of $500, due March 1, 2026	$	—	$	500
3.450%, face amount of $500, due August 15, 2027	499		498
3.900%, face amount of $500, due May 1, 2029	498		498
2.050%, face amount of $500, due August 15, 2030	497		497
5.500%, face amount of $500, due June 15, 2033	492		491
5.125%, face amount of $500, due February 15, 2034	491		489
5.200%, face amount of $500, due August 15, 2035	494		—
Total debt	$	2,971	$	2,973

Maturity of debt

The combined aggregate maturities for debt as of December 31, 2025 are presented in the following table.

(In millions)
2026	$	—
2027	500
2028	—
2029	500
2030	500
Thereafter	1,500
Less: discount	(29)
Total	$	2,971