Debt - Covenants, Events of Default and Provisions (Details) $ in Millions	9 Months Ended
Sep. 30, 2020 USD ($)
Senior Notes
Debt Instrument
Covenant, outstanding borrowings leverage threshold (percent)	30.00%
First lien net leverage ratio	5.0
Line of Credit \| Revolving Credit Facility
Debt Instrument
Line of credit current borrowing capacity	$ 325

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=120391452&loc=d3e13212-122682

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