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Commitments and Contingencies (Tables)
12 Months Ended
Dec. 31, 2011
Commitments and Contingencies  
Summary of actual and estimated take-or-pay commitments

 

 

 

 

Actual

 

Estimated (a)

 

 

2009

 

2010

 

2011

 

2012

 

2013

 

2014

 

2015

 

2016

 

Thereafter

 

Coal take-or-pay commitments

 

$

93

 

$

66

 

$

68

 

$

79

 

$

82

 

$

86

 

$

88

 

$

58

 

$

148

 

 

(a)                                  Total take-or-pay commitments are approximately $541 million.  The total net present value of these commitments is approximately $401 million.