Short-Term Borrowings (Tables)

12 Months Ended

Dec. 31, 2013

Debt Disclosure [Abstract]

Primary Components of Short-Term Borrowings

The following tables present information with respect to the amounts outstanding and weighted-average interest rates of the primary components of our short-term borrowings as of and for the years ended December 31:

	Securities Sold Under Repurchase Agreements									Federal Funds Purchased
(Dollars in millions)	2013			2012			2011			2013			2012			2011
Balance as of December 31	$	7,953		$	8,006		$	8,572		$	19		$	399		$	656
Maximum outstanding as of any month-end	11,538			9,306			9,853			570			1,145			8,259
Average outstanding during the year	8,436			7,697			9,040			297			784			845
Weighted-average interest rate as of year-end	.003		%	.06		%	.04		%	.13		%	.13		%	.05		%
Weighted-average interest rate for the year	.01			.01			.11			.02			.09			.05
	Tax-Exempt Investment Program									Corporate Commercial Paper Program
(Dollars in millions)	2013			2012			2011			2013			2012			2011
Balance as of December 31	$	1,948		$	2,148		$	2,294		$	1,819		$	2,318		$	2,384
Maximum outstanding as of any month-end	2,135			2,274			2,473			2,535			2,503			2,825
Average outstanding during the year	2,030			2,214			2,404			1,632			2,382			2,449
Weighted-average interest rate as of year-end	.09		%	.17		%	.18		%	.14		%	.22		%	.22		%
Weighted-average interest rate for the year	.13			.21			.26			.18			.23			.23

Securities Sold Under Repurchase Agreements

The following table presents the components of securities sold under repurchase agreements by underlying collateral as of December 31, 2013:

(In millions)
Collateralized by securities purchased under resale agreements	$	1,454
Collateralized by investment securities	6,499
Total	$	7,953

Schedule Of U S Government Securities And Related Repurchase Agreements Including Accrued Interest

The following table presents information about these U.S. government securities and the related repurchase agreements, including accrued interest, as of December 31, 2013. The table excludes repurchase agreements collateralized by securities purchased under resale agreements.

	U.S. Government Securities Sold				Repurchase Agreements
(Dollars in millions)	Amortized Cost		Fair Value		Amortized Cost		Rate
Overnight maturity	$	7,097	$	6,677	$	6,499	.004	%