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v3.8.0.1

Long-term Debt - Textual (Details) shares in Millions, $ in Millions |  | 1 Months Ended | 3 Months Ended | 9 Months Ended | 12 Months Ended |
--- | --- | --- | --- | --- | --- | ---
Sep. 29, 2017 USD ($) | May 31, 2017 USD ($) shares | Feb. 29, 2016 | Sep. 30, 2017 USD ($) shares | Jun. 30, 2017 USD ($) | Mar. 31, 2017 shares | Sep. 30, 2016 USD ($) shares | Sep. 30, 2017 USD ($) shares | Sep. 30, 2016 USD ($) shares | Dec. 31, 2016 USD ($) | Feb. 25, 2016 renewal_option
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |
Decrease in spread used to calculate interest rate | 0.25% |  |  |  |  |  |  |  |  |  |
Senior secured leverage ratio maximum |  |  |  | 2 |  |  |  | 2 |  |  |
Debt Instrument, Convertible, Terms of Conversion Feature |  | 27.2221 shares per $1,000 principal amount |  |  |  |  |  |  |  |  |
Conversion of convertible debt |  | $ 319.4 |  |  |  |  |  | $ 319.4 | $ 0.0 |  |
Conversion of convertible debt, net of tax (shares) | shares |  | 8.9 |  |  |  |  |  |  |  |  |
Stock Issued During Period, Shares, Conversion of Convertible Securities Due to Make-Whole Premium | shares |  | 0.2 |  |  |  |  |  |  |  |  |
Convertible senior subordinated notes (shares) | shares |  |  |  | 0.0 |  | 8.6 | 8.5 | 5.4 | 8.5 |  |
Repayments of Debt |  | $ 0.6 |  |  |  |  |  |  |  |  |
Loss on early extinguishment of debt |  |  |  | $ 0.3 | $ 10.4 |  | $ 2.6 | $ 10.7 | $ 7.4 |  |
Maximum permitted capital expenditures | $ 350.0 |  |  |  |  |  |  |  |  | $ 300.0 |
Maximum leverage ratio | 4.50 |  |  |  |  |  |  |  |  | 4.25 |
Maximum contractual future increase |  |  |  | 870.0 |  |  |  | 870.0 |  | $ 300.0 |
Noncurrent financing obligation liability |  |  |  | 272.3 |  |  |  | 272.3 |  | 279.3 |
Development / Lease Agreement [Member] |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |
Initial lease term |  |  | 15 years |  |  |  |  |  |  |  |
Number of renewal options | renewal_option |  |  |  |  |  |  |  |  |  |  | 4
Renewal term |  |  | 5 years |  |  |  |  |  |  |  |
Increase in property plant and equipment, net |  |  |  |  |  |  |  | 46.8 |  | $ 20.3 |
Development / Lease Agreement [Member] | Financing Obligation [Member] |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |
Total estimated financing obligation |  |  |  | 56.0 |  |  |  | 56.0 |  |  |
Term Loan Facilities [Member] |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |
Senior secured leverage ratio maximum | 2.00 |  |  |  |  |  |  |  |  | 1.75 |
Other Notes Payable [Member] | Development / Lease Agreement [Member] |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |
Noncurrent financing obligation liability |  |  |  | 46.6 |  |  |  | 46.6 |  | $ 20.3 |
Capital Lease Obligations, Current |  |  |  | $ 0.2 |  |  |  | $ 0.2 |  |  |
Revolving Credit Facility [Member] |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |
Maximum borrowing capacity | $ 700.0 |  |  |  |  |  |  |  |  | $ 600.0 |
Term Loan Facilities [Member] | Term Loan Facilities [Member] |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |
Repayments of Debt | 110.0 |  |  |  |  |  |  |  |  |  |
Maximum borrowing capacity | $ 300.0 |  |  |  |  |  |  |  |  |  |

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