Amount of current income tax expense (benefit) and deferred income tax expense (benefit) pertaining to continuing operations.

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 740
-SubTopic 10
-Section 50
-Paragraph 9
-Subparagraph (a),(b)
-URI http://asc.fasb.org/extlink&oid=84230637&loc=d3e32639-109319

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 235
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.4-08.(h))
-URI http://asc.fasb.org/extlink&oid=26873400&loc=d3e23780-122690

Name:	us-gaap_IncomeTaxExpenseBenefit
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

Income Taxes - Textuals (Details) - USD ($) $ in Millions	3 Months Ended			6 Months Ended	9 Months Ended
Income Taxes - Textuals (Details) - USD ($) $ in Millions	Sep. 30, 2018	Sep. 30, 2017	Apr. 01, 2017	Sep. 30, 2017	Sep. 30, 2018
Successor
Income Taxes
Income tax provision (benefit)	$ 13.8	$ (84.1)		$ (79.4)	$ 31.3
Successor \| Foreign Tax Authority
Income Taxes
Income tax provision (benefit)	$ 0.3	$ (0.9)		$ (1.0)	$ 0.2
Predecessor
Income Taxes
Income tax provision (benefit)			$ (263.8)
Predecessor \| Foreign Tax Authority
Income Taxes
Income tax provision (benefit)			$ (9.4)