Consolidated Statements of Stockholders' Equity (Deficit) (unaudited) (Parenthetical) - USD ($) $ in Millions	3 Months Ended
Sep. 30, 2019	Jun. 30, 2019	Mar. 31, 2019	Sep. 30, 2018	Jun. 30, 2018	Mar. 31, 2018
Accumulated Other Comprehensive (Loss)
Net change on derivatives designated as cash flow hedges, tax	$ (0.2)	$ 0.0	$ 0.1	$ 0.1	$ 0.1	$ 0.1

Amount, after reclassification, of tax expense (benefit) for gain (loss) from derivative instrument designated and qualifying as cash flow hedge included in assessment of hedge effectiveness, attributable to parent.

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 220
-SubTopic 10
-Section 45
-Paragraph 12
-URI http://asc.fasb.org/extlink&oid=118930883&loc=d3e640-108580

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Balance Type:	debit
Period Type:	duration