Annual report pursuant to Section 13 and 15(d)

Debt - Interest Expense (Details)

v3.6.0.2
Debt - Interest Expense (Details) - USD ($)
$ in Thousands
 12 Months Ended
Dec. 31, 2016
Dec. 31, 2015
Dec. 31, 2014
Debt Instrument [Line Items]      
Total interest cost $ 1,301,189 $ 997,493 $ 587,036
Capitalized interest (812,799) (675,410) (405,800)
Total interest expense, net 488,390 322,083 181,236
Convertible Debt [Member]      
Debt Instrument [Line Items]      
Interest per contractual rate 201,752 145,848 4,469
Amortization of debt discount 31,310 28,347 2,328
Amortization of debt issuance costs 5,240 2,989 4
Total interest cost 238,302 177,184 6,801
Debt Excluding Convertible Debt [Member]      
Debt Instrument [Line Items]      
Total interest cost $ 1,062,887 $ 820,309 $ 580,235