Goodwill and Other Intangible Assets (Tables)

12 Months Ended

Dec. 31, 2023

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, 2021	$	112	$	237	$	349
Other adjustments	(3)				(3)
Balance, December 31, 2022	109		237		346
Other adjustments	1				1
Balance, December 31, 2023	$	110	$	237	$	347

Summary of Other Intangible Assets

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

	December 31, 2023				December 31, 2022
	Gross Carrying Amount		Accumulated Amortization		Gross Carrying Amount		Accumulated Amortization
(In millions)
Finite-lived intangible assets:
Customer relationships	$	93	$	21	$	59	$	19
Other	11		9		17		14
Total finite-lived intangible assets	104		30		76		33
Indefinite-lived intangible assets	77				68
Total other intangible assets	$	181	$	30	$	144	$	33