Statement of Cash Flows (Details) - USD ($)	9 Months Ended
	Sep. 30, 2016	Sep. 30, 2015	Dec. 31, 2015	Dec. 31, 2014
Accrued capital expenditures	$ 33,900,000	$ 84,700,000	$ 50,700,000	$ 56,200,000
Accounts Payable, Other				7,500,000
Facility lease obligation recognized during the period	16,400,000	27,000,000
Warrant Transactions [Member]
Accounts Payable, Other				59,800,000
Other Liabilities, Fair Value Disclosure	$ 0	$ 0	$ 0	$ 87,500,000