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Long-Term Debt - Derivative Instruments and Hedging Activities (Details) - USD ($) $ in Millions | 3 Months Ended | 6 Months Ended | 9 Months Ended |
--- | --- | --- | --- | ---
Sep. 30, 2019 | Sep. 30, 2018 | Jun. 30, 2019 | Jun. 30, 2018 | Sep. 30, 2019 | Sep. 30, 2018 | Dec. 31, 2018
Derivatives, Fair Value [Line Items] |  |  |  |  |  |  |
Derivative Cash Premium Paid |  |  | $ 2.8 | $ 1.9 |  |  |
Derivative Instrument, Unamortized Premium | $ 4.0 |  |  |  | $ 4.0 |  | $ 4.6
Incremental interest expense | 0.3 | $ 0.1 |  |  | 1.2 | $ 0.1 |
Net benefit expected to be reclassified | 1.8 |  |  |  | 1.8 |  |
Interest rate swap and interest rate cap | Derivative instruments and hedging activities |  |  |  |  |  |  |
Derivatives, Fair Value [Line Items] |  |  |  |  |  |  |
Fair value of derivative | 0.2 |  |  |  | 0.2 |  | 4.8
Net cash proceeds |  |  |  |  | 4.8 |  |
Interest rate swap and interest rate cap | Derivative instruments and hedging activities | Other assets |  |  |  |  |  |  |
Derivatives, Fair Value [Line Items] |  |  |  |  |  |  |
Derivative asset, fair value of interest rate swap and cap positions | 0.1 |  |  |  | 0.1 |  | 1.8
Interest rate swap and interest rate cap | Derivative instruments and hedging activities | Other current assets |  |  |  |  |  |  |
Derivatives, Fair Value [Line Items] |  |  |  |  |  |  |
Derivative asset, fair value of interest rate swap and cap positions | $ 0.1 |  |  |  | $ 0.1 |  |
Interest rate swap | Derivative instruments and hedging activities | Other current assets |  |  |  |  |  |  |
Derivatives, Fair Value [Line Items] |  |  |  |  |  |  |
Derivative liability, fair value of interest rate swap and cap positions |  |  |  |  |  |  | $ 3.0

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- Definition Fair value, before effects of master netting arrangements, of a financial asset or other contract with one or more underlyings, notional amount or payment provision or both, and the contract can be net settled by means outside the contract or delivery of an asset. Includes assets elected not to be offset. Excludes assets not subject to a master netting arrangement. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 20 -Section 55 -Paragraph 7 -URI http://asc.fasb.org/extlink&oid=99393222&loc=SL20226000-175313 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 860 -SubTopic 20 -Section 50 -Paragraph 4D -Subparagraph (c)(2) -URI http://asc.fasb.org/extlink&oid=118948506&loc=SL51823488-111719 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 20 -Section 50 -Paragraph 3 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=51824906&loc=SL20225862-175312 Reference 4: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 50 -Paragraph 4B -Subparagraph (a),(c) -URI http://asc.fasb.org/extlink&oid=109980867&loc=SL5624163-113959 + Details
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