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Short-Term Borrowings (Tables)
 12 Months Ended
Dec. 31, 2011
Short-Term Borrowings [Abstract]  
Federal Funds Purchased And Securities Sold Under Agreements To Repurchase Commercial Paper Trading Liabilities And Other Short-Term Borrowings

 

 

 

 

 

 

 

(Dollars in thousands)

  

Federal Funds
Purchased and
Securities Sold
Under Agreements
to Repurchase

  

Trading
Liabilities

  

Other
Short-term
Borrowings

 

2011

 

 

 

 

 

 

Average balance

 

 

$

 

2,159,933

  

 

 

$

 

609,772

  

 

 

$

 

290,344

  

Year-end balance

 

 

  

1,887,052

  

 

 

  

347,285

  

 

 

  

172,550

  

Maximum month-end outstanding

 

 

  

2,631,628

  

 

 

  

709,642

  

 

 

  

643,094

  

Average rate for the year

 

 

  

.23

%

 

 

 

  

2.45

%

 

 

 

  

.29

%

 

Average rate at year-end

 

 

  

.23

  

 

 

  

2.34

  

 

 

  

.08

  

 

2010

 

 

 

 

 

 

Average balance

 

 

$

 

2,615,536

  

 

 

$

 

547,377

  

 

 

$

 

227,772

  

Year-end balance

 

 

  

2,114,908

  

 

 

  

361,920

  

 

 

  

180,735

  

Maximum month-end outstanding

 

 

  

3,046,201

  

 

 

  

654,748

  

 

 

  

693,512

  

Average rate for the year

 

 

  

.24

%

 

 

 

  

3.30

%

 

 

 

  

.56

%

 

Average rate at year-end

 

 

  

.22

  

 

 

  

3.01

  

 

 

  

.18

  

 

2009

 

 

 

 

 

 

Average balance

 

 

$

 

2,486,296

  

 

 

$

 

536,161

  

 

 

$

 

2,662,989

  

Year-end balance

 

 

  

2,874,353

  

 

 

  

293,387

  

 

 

  

761,758

  

Maximum month-end outstanding

 

 

  

2,874,353

  

 

 

  

565,858

  

 

 

  

4,734,718

  

Average rate for the year

 

 

  

.21

%

 

 

 

  

3.89

%

 

 

 

  

.29

%

 

Average rate at year-end

 

 

  

.17

  

 

 

  

4.13

  

 

 

  

.17