Derivatives and Fair Value Measurements - Financial Instruments Measured on Recurring Basis (Details) - Successor - Fair Value, Measurements, Recurring $ in Millions	Jun. 30, 2017 USD ($)
Derivative [Line Items]
Net financial liabilities	$ 9.3
Foreign currency forward contract
Derivative [Line Items]
Net financial liabilities	9.3
Level 1
Derivative [Line Items]
Net financial liabilities	0.0
Level 1 \| Foreign currency forward contract
Derivative [Line Items]
Net financial liabilities	0.0
Level 2
Derivative [Line Items]
Net financial liabilities	9.3
Level 2 \| Foreign currency forward contract
Derivative [Line Items]
Net financial liabilities	9.3
Level 3
Derivative [Line Items]
Net financial liabilities	0.0
Level 3 \| Foreign currency forward contract
Derivative [Line Items]
Net financial liabilities	$ 0.0

Fair values as of the balance sheet date of the net amount of all assets and liabilities resulting from contracts that meet the criteria of being accounted for as derivative instruments.

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 815
-SubTopic 10
-Section 45
-Paragraph 5
-URI http://asc.fasb.org/extlink&oid=6945355&loc=d3e41228-113958

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