Other Operating Expenses (Tables)

12 Months Ended

Dec. 31, 2016

Operating Expenses [Abstract]

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

Details of other operating expenses were as follows.

Year ended December 31, ($ in millions)	2016		2015		2014
Insurance commissions	$	389	$	378	$	374
Technology and communications	274		267		334
Lease and loan administration	136		126		122
Advertising and marketing	112		107		111
Professional services	103		93		100
Vehicle remarketing and repossession	95		78		83
Regulatory and licensing fees	94		79		87
Premises and equipment depreciation	84		82		81
Occupancy	51		50		47
Non-income taxes	25		29		40
Other	242		216		212
Total other operating expenses	$	1,605	$	1,505	$	1,591