Consolidated Statements of Cash Flows - Parenthetical - USD ($) $ in Millions	Mar. 31, 2019	Dec. 31, 2018
Statement of Cash Flows [Abstract]
Cash and cash equivalents classified as Held for sale assets	$ 0.0	$ 3.7

Amount classified as cash and cash equivalents attributable to disposal group held for sale or disposed of.

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Name:	us-gaap_DisposalGroupIncludingDiscontinuedOperationCashAndCashEquivalents
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant