Derivatives - Reclassified Amounts (Details) - USD ($) $ in Millions	11 Months Ended	12 Months Ended
Nov. 19, 2018	Dec. 31, 2017
Interest Expense
Derivative [Line Items]
Loss Reclassified from Accumulated OCI into Income	$ 0.0	$ 4.5
Depreciation Expense
Derivative [Line Items]
Loss Reclassified from Accumulated OCI into Income	$ 0.6	$ 0.8

Amount before tax of reclassification adjustments of other comprehensive income (loss).

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 220
-SubTopic 10
-Section 45
-Paragraph 14A
-URI http://asc.fasb.org/extlink&oid=118930883&loc=SL7669686-108580

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 220
-SubTopic 10
-Section 45
-Paragraph 17B
-URI http://asc.fasb.org/extlink&oid=118930883&loc=SL34724394-108580

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