Risk Management and Derivative Instruments - Additional Information (Detail) $ in Millions	1 Months Ended
Apr. 30, 2020 USD ($)
Fair Value Disclosures [Abstract]
Derivative Cash Received On Hedge	$ 18.0

The amount of cash received during the period on settlement of a hedge.

No definition available.

Name:	us-gaap_DerivativeCashReceivedOnHedge
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration