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Supplemental Cash Flow (Tables)
 12 Months Ended
Dec. 31, 2014
Supplemental Cash Flow Information [Abstract]  
Schedule of Cash Flow, Supplemental Disclosures [Table Text Block]
 
 
For the Years Ended December 31,
 
 
2014
 
2013
 
2012
Interest (net of amounts capitalized)
 
$
233,631

 
$
209,580

 
$
212,364

Income taxes
 
$
(81,962
)
 
$
35,079

 
$
121,245