Financial Risk Management Activities - Derivative Contracts - Additional Information (Detail) - USD ($)	3 Months Ended		6 Months Ended
	Jun. 30, 2024	Jun. 30, 2023	Jun. 30, 2024	Jun. 30, 2023	Dec. 31, 2023
Interest Rate Swaps
Derivative Instruments, Gain (Loss) [Line Items]
Outstanding gross notional amount	$ 100,000,000		$ 100,000,000		$ 100,000,000
Foreign Exchange Forwards / Swaps
Derivative Instruments, Gain (Loss) [Line Items]
Outstanding gross notional amount	232,000,000		232,000,000		226,000,000
Designated as Hedging Instrument | Commodity Options / Collars | Designated as Cash Flow Hedges
Derivative Instruments, Gain (Loss) [Line Items]
Increase (decrease) in sales and other operating revenues due to hedging instruments		$ (52,000,000)		$ (86,000,000)
Designated as Hedging Instrument | Interest Rate Swaps | Designated as Fair Value Hedges
Derivative Instruments, Gain (Loss) [Line Items]
Outstanding gross notional amount	100,000,000		100,000,000		100,000,000
Liabilities - Gross fair value of derivative contracts	0		0		2,000,000
Not Designated as Hedging Instrument | Foreign Exchange Forwards / Swaps
Derivative Instruments, Gain (Loss) [Line Items]
Liabilities - Gross fair value of derivative contracts	0		0		$ 6,000,000
Foreign exchange gains (losses) reported in Other, net in the Statement of Consolidated Income	1,000,000	(2,000,000)	(1,000,000)	0
Net gains (losses) on foreign exchange contracts not designated as hedging instruments	$ 0	$ 0	$ 5,000,000	$ (2,000,000)