Subsequent Events - Additional Information (Detail) - Subsequent Event [Member] $ in Billions	Oct. 22, 2020 USD ($) shares
TEV exceeded $19.8 billion [Member]
Subsequent Event [Line Items]
Total enterprise value \| $	$ 19.8
Market-Based Shares [Member]
Subsequent Event [Line Items]
Number of shares vested \| shares	40,146

The number of equity-based payment instruments, excluding stock (or unit) options, that vested during the reporting period.

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (c)(2)(iii)(2)
-URI http://asc.fasb.org/extlink&oid=120381028&loc=d3e5070-113901

Name:	us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriod
Namespace Prefix:	us-gaap_
Data Type:	xbrli:sharesItemType
Balance Type:	na
Period Type:	duration