Goodwill and Other Intangible Assets (Tables)

12 Months Ended

Dec. 31, 2024

Goodwill and Intangible Assets Disclosure [Abstract]

Summary of Goodwill

A summary of the changes in the carrying amount of goodwill is as follows:

	CNA Financial		Boardwalk Pipelines		Total
(In millions)
Balance, December 31, 2022	$	109	$	237	$	346
Other adjustments	1				1
Balance, December 31, 2023 and 2024	110		237		347

Summary of Other Intangible Assets

A summary of the net carrying amount of other intangible assets is as follows:

	December 31, 2024				December 31, 2023
	Gross Carrying Amount		Accumulated Amortization		Gross Carrying Amount		Accumulated Amortization
(In millions)
Finite-lived intangible assets:
Customer relationships	$	93	$	24	$	93	$	21
Other	10		8		11		9
Total finite-lived intangible assets	103		32		104		30
Indefinite-lived intangible assets	76				77
Total other intangible assets	$	179	$	32	$	181	$	30