Commitments and Contingencies - Future Delivery Commitments (Detail)	12 Months Ended
	Dec. 31, 2021 MmbtuPerDay bbl / d
2022 | Natural Gas
Loss Contingencies [Line Items]
Oil and Gas Delivery Commitments and Contracts, Daily Production | MmbtuPerDay	588,158
2022 | Ethane and Propane
Loss Contingencies [Line Items]
Oil and Gas Delivery Commitments and Contracts, Daily Production | bbl / d	55,000
2023 | Natural Gas
Loss Contingencies [Line Items]
Oil and Gas Delivery Commitments and Contracts, Daily Production | MmbtuPerDay	500,710
2023 | Ethane and Propane
Loss Contingencies [Line Items]
Oil and Gas Delivery Commitments and Contracts, Daily Production | bbl / d	39,932
2024 | Natural Gas
Loss Contingencies [Line Items]
Oil and Gas Delivery Commitments and Contracts, Daily Production | MmbtuPerDay	253,566
2024 | Ethane and Propane
Loss Contingencies [Line Items]
Oil and Gas Delivery Commitments and Contracts, Daily Production | bbl / d	35,000
2025 | Natural Gas
Loss Contingencies [Line Items]
Oil and Gas Delivery Commitments and Contracts, Daily Production | MmbtuPerDay	182,493
2025 | Ethane and Propane
Loss Contingencies [Line Items]
Oil and Gas Delivery Commitments and Contracts, Daily Production | bbl / d	35,000
2026 | Natural Gas
Loss Contingencies [Line Items]
Oil and Gas Delivery Commitments and Contracts, Daily Production | MmbtuPerDay	158,301
2026 | Ethane and Propane
Loss Contingencies [Line Items]
Oil and Gas Delivery Commitments and Contracts, Daily Production | bbl / d	35,000
2027 | Natural Gas
Loss Contingencies [Line Items]
Oil and Gas Delivery Commitments and Contracts, Daily Production | MmbtuPerDay	100,000
2027 | Ethane and Propane
Loss Contingencies [Line Items]
Oil and Gas Delivery Commitments and Contracts, Daily Production | bbl / d	35,000
2028 | Natural Gas
Loss Contingencies [Line Items]
Oil and Gas Delivery Commitments and Contracts, Daily Production | MmbtuPerDay	100,000
2028 | Ethane and Propane
Loss Contingencies [Line Items]
Oil and Gas Delivery Commitments and Contracts, Daily Production | bbl / d	35,000
2029 | Natural Gas
Loss Contingencies [Line Items]
Oil and Gas Delivery Commitments and Contracts, Daily Production | MmbtuPerDay	100,000
2029 | Ethane and Propane
Loss Contingencies [Line Items]
Oil and Gas Delivery Commitments and Contracts, Daily Production | bbl / d	20,000
2030 | Natural Gas
Loss Contingencies [Line Items]
Oil and Gas Delivery Commitments and Contracts, Daily Production | MmbtuPerDay	0
2030 | Ethane and Propane
Loss Contingencies [Line Items]
Oil and Gas Delivery Commitments and Contracts, Daily Production | bbl / d	20,000
2031 | Natural Gas
Loss Contingencies [Line Items]
Oil and Gas Delivery Commitments and Contracts, Daily Production | MmbtuPerDay	0
2031 | Ethane and Propane
Loss Contingencies [Line Items]
Oil and Gas Delivery Commitments and Contracts, Daily Production | bbl / d	20,000