Financial Risk Management Activities - Notional Amounts of Outstanding Financial Risk Management Derivative Contracts (Detail) MMBbls in Millions	Dec. 31, 2022 USD ($) MMBbls	Dec. 31, 2021 USD ($) MMBbls
Commodity Options / Collars
Derivative [Line Items]
Commodity - crude oil (millions of barrels) | MMBbls	0.0	54.8
Foreign Exchange Forwards / Swaps
Derivative [Line Items]
Outstanding gross notional amount	$ 177,000,000	$ 145,000,000
Interest Rate Swaps
Derivative [Line Items]
Outstanding gross notional amount	$ 100,000,000	$ 100,000,000