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Commercial Commitments (Tables)
3 Months Ended
Mar. 31, 2013
Guarantees [Abstract]  
Commercial Commitments
The following table shows our commercial commitments (in millions):
 
March 31, 2013
 
December 31
2012
Affiliate guarantees (a)
$
42.0

 
$
42.0

Asset residual value guarantees
5.1

 
11.2

Lease payment guarantees
39.3

 
41.0

Performance bonds
0.5

 
0.6

Standby letters of credit
9.8

 
9.7

Total commercial commitments (b)
$
96.7

 
$
104.5

________________
(a)
Excludes one of our guarantees because it does not state a maximum potential future payment and because we believe the likelihood we will be required to perform under that guarantee is remote. In April 2013, $42.0 million of our affiliate guarantees were terminated when the related affiliates were sold. See "Note 13. Subsequent Events" for additional information.
(b)
The carrying values of liabilities on the balance sheet for our commercial commitments were $6.2 million at March 31, 2013 and $6.4 million at December 31, 2012. The expiration dates for our commitments range from 2013–2022. We are not aware of any event that would require us to satisfy any of our commitments.