Commercial Paper and Other Short-Term Borrowings (Tables)

6 Months Ended

Jun. 30, 2012

Commercial Paper and Other Short-Term Borrowings and Long-Term Debt [Abstract]

Schedule of Commercial Paper and Short Term Debt

(Dollars in millions)	June 30, 2012		December 31, 2011
Federal funds purchased and securities sold under repurchase agreements with weighted average interest rates of 0.22% and 0.06% at June 30, 2012 and December 31, 2011, respectively	$	198	$	597
Commercial paper, with weighted average interest rates of 0.28% and 0.22% at June 30, 2012 and December 31, 2011, respectively		2,837		2,498
Other borrowed funds:
Term federal funds purchased, with a weighted average interest rate of 0.15% at December 31, 2011		—		50
Federal Home Loan Bank advances, with a weighted average interest rate of 0.48% at December 31, 2011		—		500
All other borrowed funds, with a weighted average interest rate of 0.73% at December 31, 2011		—		38
Total commercial paper and other short-term borrowings	$	3,035	$	3,683