Subsequent Events - Additional Information (Detail) $ in Millions	1 Months Ended
Jul. 28, 2020 USD ($)
Subsequent Event
Subsequent Event [Line Items]
Gross proceeds from investment land	$ 97

The cash inflow from the sale of land held for investment; excludes sales of land held as inventory or productive use.

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 12
-Subparagraph (c)
-URI http://asc.fasb.org/extlink&oid=118932676&loc=d3e3179-108585

Name:	us-gaap_ProceedsFromSaleOfLandHeldforinvestment
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration