Revenue from Contracts with Customers - Current Long-Term Contracts Outstanding (Details) - Canada	Mar. 31, 2024 MMcf
Q4 2025 \| Contracts to sell natural gas at USD index pricing
Disaggregation of Revenue [Line Items]
Remaining performance obligation	25
Q4 2024 \| Contracts to sell natural gas at USD index pricing
Disaggregation of Revenue [Line Items]
Remaining performance obligation	31
Q4 2024 \| Contracts to sell natural gas at CAD fixed pricing
Disaggregation of Revenue [Line Items]
Remaining performance obligation	124
Q4 2024 \| Contracts to sell natural gas at USD index pricing
Disaggregation of Revenue [Line Items]
Remaining performance obligation	25
Q4 2024 \| Contracts to sell natural gas at CAD fixed pricing
Disaggregation of Revenue [Line Items]
Remaining performance obligation	28
Q4 2026 \| Contracts to sell natural gas at USD index pricing
Disaggregation of Revenue [Line Items]
Remaining performance obligation	49
Q4 2027 \| Contracts to sell natural gas at USD index pricing
Disaggregation of Revenue [Line Items]
Remaining performance obligation	30
Q4 2028 \| Contracts to sell natural gas at USD index pricing
Disaggregation of Revenue [Line Items]
Remaining performance obligation	10

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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