Goodwill and Other Intangible Assets (Tables)

12 Months Ended

Dec. 31, 2024

Goodwill and Intangible Assets Disclosure [Abstract]

Schedule of Goodwill

The following table presents the changes in goodwill:

	General Insurance
(in millions)	North America Commercial		International Commercial		Global Personal		Other Operations		Total
Balance at January 1, 2023:
Goodwill - gross	$	4,654	$	1,989	$	499	$	19	$	7,161
Accumulated impairments	(2,216)		(947)		(237)		(10)		(3,410)
Net goodwill	2,438		1,042		262		9		3,751
Increase (decrease) due to:
Dispositions*	(369)		—		—		—		(369)
Other	—		39		3		(2)		40
Balance at December 31, 2023:
Goodwill - gross	4,285		2,028		502		17		6,832
Accumulated impairments	(2,216)		(947)		(237)		(10)		(3,410)
Net goodwill	2,069		1,081		265		7		3,422
Increase (decrease) due to:
Dispositions	—		—		(22)		—		(22)
Other	—		(25)		(2)		—		(27)
Balance at December 31, 2024:
Goodwill - gross	4,285		2,003		478		17		6,783
Accumulated impairments	(2,216)		(947)		(237)		(10)		(3,410)
Net goodwill	$	2,069	$	1,056	$	241	$	7	$	3,373

*Primarily represents amounts related to the sale of Validus Re through the date of disposition.