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Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

Fair Value Measurements - Nonreccuring Fair Value Measurement (Details) - USD ($) $ in Millions	1 Months Ended
	Apr. 30, 2018	Jun. 30, 2019	Sep. 30, 2018	Jun. 30, 2018
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Trademarks and tradenames		$ 16.4	$ 7.9	$ 7.9
Trademarks and Trade Names
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Useful life	3 years