Amount of current borrowing capacity under the credit facility considering any current restrictions on the amount that could be borrowed (for example, borrowings may be limited by the amount of current assets), but without considering any amounts currently outstanding under the facility.

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02.19(b),22(b))
-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

Name:	us-gaap_LineOfCreditFacilityCurrentBorrowingCapacity
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

Debt - Covenants, Events of Default and Provisions (Details) $ in Millions	Jan. 31, 2019	Dec. 31, 2019 USD ($)
Revolving Credit Facility
Debt Instrument
Current borrowing capacity		$ 325
Senior Notes
Debt Instrument
Covenant, outstanding borrowings leverage threshold (percent)	30.00%
Covenant, first lien net leverage ratio	5.0