Insurance Premiums and Service Revenue

12 Months Ended

Dec. 31, 2023

Insurance Premiums and Service Revenue [Abstract]

Insurance Premiums and Service Revenue Disclosure

Insurance Premiums and Service Revenue

The following table is a summary of insurance premiums and service revenue written and earned.

	2023				2022				2021
Year ended December 31, ($ in millions)	Written		Earned		Written		Earned		Written		Earned
Insurance premiums
Direct	$	476	$	446	$	388	$	379	$	397	$	389
Assumed	93		68		42		29		15		8
Gross insurance premiums	569		514		430		408		412		397
Ceded	(265)		(238)		(216)		(211)		(200)		(205)
Net insurance premiums	304		276		214		197		212		192
Service revenue	971		995		889		954		985		925
Insurance premiums and service revenue written and earned	$	1,275	$	1,271	$	1,103	$	1,151	$	1,197	$	1,117