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Long-Term Debt and Capital Lease Obligations (Tables) | 12 Months Ended
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Dec. 31, 2016
Long-term Debt and Capital Lease Obligations [Abstract] |
Long-term debt outstanding maturities and sinking fund requirements | The following table shows the future maturities of our long-term debt outstanding (excluding obligations under capital leases) as of December 31, 2016:
(in millions) |  | Payments
2017 |  | $ | 154.5 |
2018 |  | 836.1 |
2019 |  | 357.7 |
2020 |  | 684.4 |
2021 |  | 336.2 |
Thereafter |  | 6,953.5 |
Total |  | $ | 9,322.4 |
Summary of capitalized leased facilities | The following is a summary of our capitalized leased facilities as of December 31:
(in millions) |  | 2016 |  | 2015
Long-term power purchase commitment |  | $ | 140.3 |  |  | $ | 140.3 |
Accumulated amortization |  | (109.5 | ) |  | (103.9 | )
Total leased facilities |  | $ | 30.8 |  |  | $ | 36.4 |
Future minimum lease payments under capital lease and present value of net minimum lease payments | Future minimum lease payments under our capital lease and the present value of our net minimum lease payments as of December 31, 2016 are as follows:
(in millions) |  | Payments
2017 |  | $ | 13.9 |
2018 |  | 14.7 |
2019 |  | 15.5 |
2020 |  | 16.4 |
2021 |  | 17.2 |
Thereafter |  | 7.6 |
Total minimum lease payments |  | 85.3 |
Less: Estimated executory costs |  | (39.9 | )
Net minimum lease payments |  | 45.4 |
Less: Interest |  | (15.8 | )
Present value of net minimum lease payments |  | 29.6 |
Less: Due currently |  | (2.7 | )
Long-term obligations under capital lease |  | $ | 26.9 |

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- Definition The entire disclosure for capital leasing arrangements including, but not limited to, the following: a) the basis on which contingent rental payments are determined; (b) the existence and terms of renewal or purchase options and escalation clauses; (c) restrictions imposed by lease agreements, such as those concerning dividends, additional debt, and further leasing. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 840 -SubTopic 30 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6455398&loc=d3e45280-112737 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 840 -SubTopic 10 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=6452660&loc=d3e36991-112694 + Details
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