Other Operating Expenses (Tables)

12 Months Ended

Dec. 31, 2018

Operating Expenses [Abstract]

Schedule of Other Operating Cost and Expense, by Component

Details of other operating expenses were as follows.

Year ended December 31, ($ in millions)	2018		2017		2016
Insurance commissions	$	440	$	415	$	389
Technology and communications	299		284		274
Advertising and marketing	172		133		112
Lease and loan administration	164		159		136
Professional services	133		113		103
Regulatory and licensing fees	121		113		94
Vehicle remarketing and repossession	111		110		95
Premises and equipment depreciation	87		89		84
Occupancy	45		46		51
Non-income taxes	29		21		25
Amortization of intangible assets	11		11		6
Other	202		189		236
Total other operating expenses	$	1,814	$	1,683	$	1,605