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Supplemental Cash Flow (Tables)
 12 Months Ended
Dec. 31, 2016
Supplemental Cash Flow Information [Abstract]  
Schedule of Cash Flow, Supplemental Disclosures [Table Text Block]
 
 
For the Years Ended December 31,
 
 
2016
 
2015
 
2014
Interest (net of amounts capitalized)
 
$
186,924

 
$
207,094

 
$
233,631

Income taxes
 
$
(18,032
)
 
$
(59,584
)
 
$
(81,962
)