Leases - Narrative (Details) - USD ($) $ in Millions	9 Months Ended
Sep. 30, 2020	Jul. 31, 2020
Leases [Abstract]
Annual payments to be received	$ 6
Maximum financing available	340	$ 380
Total costs incurred under lease	$ 117
Term of contract	5 years
Finance lease extension term	5 years
Residual value guarantee	89.00%

Term of lessee's finance lease renewal, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days.

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 842
-SubTopic 20
-Section 50
-Paragraph 3
-Subparagraph (a)(3)
-URI http://asc.fasb.org/extlink&oid=77888426&loc=SL77918673-209980

Name:	us-gaap_LesseeFinanceLeaseRenewalTerm1
Namespace Prefix:	us-gaap_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	instant