Insurance Company Subsidiary Operations (Tables)

12 Months Ended

Dec. 31, 2024

Reinsurance Disclosures [Abstract]

Effects of Reinsurance on Premiums Written and Earned

	2024						2023
(in millions)	Written			Earned			Written			Earned
Direct premiums - WNFIC	$	1,005		$	946		$	887		$	807
Assumed premiums - WNFIC		—			—			—			—
Ceded premiums - WNFIC		1,005			946			887			807
Net premiums - WNFIC		—			—			—			—
Assumed premiums - Quota share captive and excess of loss layer captive		153			151			113			90
Ceded premiums - Quota share captive		(74	)		(74	)		(52	)		(62	)
Net premiums - Quota share captive and excess loss layer captive		79			77			61			28
Net premiums - Total	$	79		$	77		$	61		$	28