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Long-Term Debt - Senior Notes (Details) - USD ($) $ in Millions | 3 Months Ended | 6 Months Ended |
--- | --- | --- | ---
Jun. 30, 2018 | Jun. 30, 2017 | Jun. 30, 2018 | Jun. 30, 2017 | Dec. 31, 2017
Debt Instrument [Line Items] |  |  |  |  |
Carrying value | $ 3,259.9 |  | $ 3,259.9 |  | $ 3,255.9
Net loss on extinguishments of long-term debt | 0.0 | $ 0.0 | 0.0 | $ (57.4) |
Deferred finance costs, net | 19.6 |  | 19.6 |  | 20.4
Senior notes due 2023 |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |
Carrying value | $ 525.0 |  | $ 525.0 |  | $ 525.0
Interest Rate | 5.00% |  | 5.00% |  | 5.00%
Deferred finance costs, net | $ 4.0 |  | $ 4.0 |  | $ 4.5
Senior notes due 2024 |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |
Carrying value | $ 575.0 |  | $ 575.0 |  | $ 575.0
Interest Rate | 5.50% |  | 5.50% |  | 5.50%
Deferred finance costs, net | $ 4.8 |  | $ 4.8 |  | $ 5.2
Senior notes due 2025 |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |
Carrying value | $ 600.0 |  | $ 600.0 |  | $ 600.0
Interest Rate | 5.00% |  | 5.00% |  | 5.00%
Deferred finance costs, net | $ 6.8 |  | $ 6.8 |  | $ 7.3
Senior notes due 2022 |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |
Carrying value |  | 600.0 |  | 600.0 |
Net loss on extinguishments of long-term debt |  | (43.0) |  |  |
Redemption premium |  | 37.0 |  |  |
Deferred finance costs, net and unamortized premium |  | $ (6.0) |  | $ (6.0) |

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- Definition For an unclassified balance sheet, the carrying amount (net of accumulated amortization) as of the balance sheet date of capitalized costs associated with the issuance of debt instruments (for example, legal, accounting, underwriting, printing, and registration costs) and premiums that will be charged against earnings over the life of the debt instruments to which such costs and premiums pertain. + References No definition available. + Details
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- Definition Amount, before unamortized (discount) premium and debt issuance costs, of long-term debt. Includes, but is not limited to, notes payable, bonds payable, commercial loans, mortgage loans, convertible debt, subordinated debt and other types of debt. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 470 -SubTopic 20 -Section 50 -Paragraph 4 -Subparagraph (b)(1) -URI http://asc.fasb.org/extlink&oid=109500613&loc=SL6031897-161870 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 944 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.7-03(16)) -URI http://asc.fasb.org/extlink&oid=6879938&loc=d3e572229-122910 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02(22)) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 Reference 4: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-03(16)) -URI http://asc.fasb.org/extlink&oid=6876686&loc=d3e534808-122878 + Details
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