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Commitments and Contingencies (Tables)
3 Months Ended
Mar. 31, 2012
Commitments and Contingencies [Abstract]  
Guarantees and Bond Indemnities Issued and Outstanding
The following table presents guarantees and bond indemnities issued and outstanding for Xcel Energy Inc.:

(Millions of Dollars)
 
March 31, 2012
 
 
Dec. 31, 2011
 
Guarantees issued and outstanding
 
$
67.5
 
 
$
67.5
 
Current exposure under these guarantees
 
 
17.9
 
 
 
18.0
 
Bonds with indemnity protection
 
 
30.4
 
 
 
31.2