Quarterly report pursuant to Section 13 or 15(d)

Financial Instruments, Fair Value, Hedging Activities, and Concentrations of Credit Risk - Additional Information (Detail)

v3.20.2
Financial Instruments, Fair Value, Hedging Activities, and Concentrations of Credit Risk - Additional Information (Detail)
$ in Millions
Jun. 30, 2020
USD ($)
Commodity Contracts [Member]  
Fair Value Concentration Of Risk Financial Statement Captions [Line Items]  
Commodity derivative assets, notional amount $ 15.7