Other Income, Net of Losses (Tables)

12 Months Ended

Dec. 31, 2018

Other Nonoperating Income (Expense) [Abstract]

Schedule of Other Nonoperating Income, by Component

Details of other income, net of losses, were as follows.

Year ended December 31, ($ in millions)	2018		2017		2016
Late charges and other administrative fees	$	110	$	102	$	98
Remarketing fees	79		104		103
Income from equity-method investments	46		14		18
Servicing fees	27		51		64
Other, net	155		130		106
Total other income, net of losses	$	417	$	401	$	389