Other Operating Expenses (Tables)

3 Months Ended

Mar. 31, 2018

Operating Expenses [Abstract]

Schedule of Other Operating Cost and Expense, by Component [Table Text Block]

Details of other operating expenses were as follows.

	Three months ended March 31,
($ in millions)	2018		2017
Insurance commissions	$	110	$	99
Technology and communications	71		69
Lease and loan administration	42		36
Advertising and marketing	39		30
Vehicle remarketing and repossession	32		28
Professional services	32		26
Regulatory and licensing fees	30		27
Premises and equipment depreciation	20		22
Occupancy	11		12
Non-income taxes	8		8
Amortization of intangible assets	3		3
Other	47		45
Total other operating expenses	$	445	$	405