Long-Term and Other Debt - Terms of Outstanding Debt (Details)	1 Months Ended	3 Months Ended
Feb. 28, 2017	Dec. 31, 2018
Debt Instrument, Redemption, Period One
Debt Instrument [Line Items]
First lien leverage ratio, period one maximum		5.5
Debt Instrument, Redemption, Period Two
Debt Instrument [Line Items]
First lien leverage ratio, period one maximum	5.0

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

No definition available.

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