Quarterly report pursuant to Section 13 or 15(d)

Supplemental Cash Flow Information (Details)

v3.5.0.2
Supplemental Cash Flow Information (Details) - USD ($)
$ in Thousands
6 Months Ended
Jun. 30, 2016
Jun. 30, 2015
Supplemental Cash Flow Information [Abstract]    
Cash paid during the period for interest, net of amounts capitalized $ 59,260 $ 46,165
Balance in property, plant and equipment, net funded with accounts payable and accrued liabilities $ 472,400 $ 383,700