Deposit Liabilities (Tables)

3 Months Ended

Mar. 31, 2018

Deposits [Abstract]

Deposit Liabilities, Type [Table Text Block]

Deposit liabilities consisted of the following.

($ in millions)	March 31, 2018		December 31, 2017
Noninterest-bearing deposits	$	122	$	108
Interest-bearing deposits
Savings and money market checking accounts	50,293		49,267
Certificates of deposit	47,025		43,869
Dealer deposits	6		12
Total deposit liabilities	$	97,446	$	93,256