Derivatives (Details 2) - Interest Expense - USD ($) $ in Millions	3 Months Ended
Mar. 31, 2020	Mar. 31, 2019
January 2020 interest rate swap \| Designated as hedging instrument
Effect of the interest rate derivatives on the entity's statement of equity and consolidated statement of income
Amount of gain/(loss) recognized in income on derivatives designated as hedges	$ 0.0
March and August 2017 interest rate caps \| Not designated as hedging instrument
Effect of the interest rate derivatives on the entity's statement of equity and consolidated statement of income
Amount of gain/(loss) recognized in income on derivative		$ (0.5)

Amount of increase (decrease) in the fair value of derivatives recognized in the income statement.

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 815
-SubTopic 10
-Section 50
-Paragraph 4A
-Subparagraph (b)(1)
-URI http://asc.fasb.org/extlink&oid=109980867&loc=SL5618551-113959

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+ References

No definition available.

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- Definition

Amount of realized and unrealized gain (loss) of derivative instruments not designated or qualifying as hedging instruments.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 815
-SubTopic 10
-Section 50
-Paragraph 4CC
-URI http://asc.fasb.org/extlink&oid=109980867&loc=SL109998890-113959

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
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-Name Accounting Standards Codification
-Topic 815
-SubTopic 10
-Section 50
-Paragraph 4C
-Subparagraph (e)
-URI http://asc.fasb.org/extlink&oid=109980867&loc=SL5624171-113959

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