Borrowings and Contractual Commitments (Tables)

12 Months Ended

Dec. 31, 2015

Short-term Debt [Line Items]

Schedule of Short-term Debt [Table Text Block]

	2015				2014
(Dollars in millions)	Balance		Interest Rate		Balance		Interest Rate
FHLB advances		$—	—	%		$4,000	0.23	%
Master notes	582		0.20		1,280		0.15
Dealer collateral	442		0.20		354		0.13
Total other short-term borrowings		$1,024				$5,634