Commercial Paper and Other Short-Term Borrowings (Tables)

12 Months Ended

Dec. 31, 2015

Short-term Debt [Abstract]

Summary of Commercial Paper and Other Short-Term Borrowings

The following is a summary of the Company's commercial paper and other short-term borrowings:

(Dollars in millions)	December 31, 2015		December 31, 2014
Federal funds purchased and securities sold under repurchase agreements, with weighted average interest rates of 0.30% and 0.12% at December 31, 2015 and December 31, 2014, respectively	$	44	$	111
Commercial paper, with a weighted average interest rate of 0.23% and 0.16% at December 31, 2015 and December 31, 2014, respectively	994		2,593
Total commercial paper and other short-term borrowings	$	1,038	$	2,704