Insurance Premiums and Service Revenue

12 Months Ended

Dec. 31, 2022

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.

	2022				2021				2020
Year ended December 31, ($ in millions)	Written		Earned		Written		Earned		Written		Earned
Insurance premiums
Direct	$	388	$	379	$	397	$	389	$	438	$	429
Assumed	42		29		15		8		3		3
Gross insurance premiums	430		408		412		397		441		432
Ceded	(216)		(211)		(200)		(205)		(211)		(208)
Net insurance premiums	214		197		212		192		230		224
Service revenue	889		954		985		925		999		879
Insurance premiums and service revenue written and earned	$	1,103	$	1,151	$	1,197	$	1,117	$	1,229	$	1,103