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Commitments and Contingencies (Tables)
12 Months Ended
Dec. 31, 2011
Commitments and Contingencies [Abstract]  
Long-term Purchase Commitment [Table Text Block]
 
(In millions)
2012
$
2,276

2013
1,221

2014
732

2015
237

2016
109

2017 — 2051
740

 
$
5,315