Fair Value Measurements (Details) - USD ($) $ in Millions	12 Months Ended
Dec. 31, 2019	Dec. 31, 2018
Financial Liabilities
Transfer of assets from level 1 to level 2	$ 0.0	$ 0.0
Transfer of assets from level 2 to level 1	0.0	0.0
Transfer of liabilities from level 1 to level 2	0.0	0.0
Transfer of liabilities from level 2 to level 1	0.0	0.0
Transfer of assets into level 3	0.0	0.0
Transfer of assets out of level 3	0.0	0.0
Transfer of liabilities into level 3	0.0	0.0
Transfer of liabilities out of level 3	0.0	0.0
Significant other observable inputs (Level 2) \| Recurring
Financial Liabilities
Derivative instrument	20.8	6.6
Long-term debt	$ 2,220.3	$ 2,093.9

Fair value, after the effects of master netting arrangements, of a financial liability or 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 liabilities not subject to a master netting arrangement and not elected to be offset.

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-Publisher FASB
-Name Accounting Standards Codification
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Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 825
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Amount of transfers of assets measured on a recurring basis out of Level 1 of the fair value hierarchy into Level 2.

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Amount of transfers of assets measured on a recurring basis out of Level 2 of the fair value hierarchy into Level 1.

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Amount of transfers of financial instrument classified as an asset out of level 3 of the fair value hierarchy.

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The fair value amount of long-term debt whether such amount is presented as a separate caption or as a parenthetical disclosure. Additionally, this element may be used in connection with the fair value disclosures required in the footnote disclosures to the financial statements. The element may be used in both the balance sheet and disclosure in the same submission.

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