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Long-Term Debt - Narrative (Details) - USD ($) |  |  | 3 Months Ended | 6 Months Ended |
--- | --- | --- | --- | --- | ---
Jul. 02, 2024 | May 31, 2024 | Jun. 30, 2024 | Jun. 30, 2023 | Jun. 30, 2024 | Jun. 30, 2023 | Dec. 31, 2023
Debt Instrument [Line Items] |  |  |  |  |  |  |
Cash paid to settle Enerplus credit facility |  | $ 395,000,000 |  |  |  |  |
Credit Facility |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |
Long-term debt, gross |  |  | $ 575,000,000 |  | $ 575,000,000 |  | $ 0
Line of credit facility, remaining borrowing capacity |  |  | 894,800,000 |  | 894,800,000 |  | 991,100,000
Weighted average interest rate (as a percent) |  |  |  | 0.00% |  | 0.00% |
Senior Notes |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |
Long-term debt, gross |  |  | $ 400,000,000 |  | $ 400,000,000 |  | 400,000,000
Stated interest rate (as a percent) |  |  | 6.375% |  | 6.375% |  |
Senior Notes | Level 1 |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |
Long-term debt, fair value |  |  | $ 399,900,000 |  | $ 399,900,000 |  | 400,000,000.0
Enerplus Senior Notes |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |
Long-term debt, gross |  |  | 60,063,000 |  | 60,063,000 |  | 0
Stated interest rate (as a percent) |  | 3.79% |  |  |  |  |
Assumed debt |  | $ 63,000,000 |  |  |  |  |
Enerplus Senior Notes | Level 2 |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |
Long-term debt, fair value |  |  | $ 60,300,000 |  | $ 60,300,000 |  |
Enerplus Senior Notes | Subsequent Event |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |
Repayments of assumed debt | $ 63,000,000 |  |  |  |  |  |
Payments for accrued interest on assumed debt | $ 800,000 |  |  |  |  |  |
Credit Facility |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |
Weighted average interest rate (as a percent) |  |  | 7.53% |  | 7.53% |  |
Amount borrowed during the period |  |  |  | 0.00% |  | 0.00% |
Credit Facility | Credit Facility |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |
Credit facility borrowing base |  | 3,000,000,000.0 |  |  |  |  |
Long-term debt, gross |  |  | $ 575,000,000.0 |  | $ 575,000,000.0 |  | 0
Letters of credit outstanding |  |  | $ 30,200,000 |  | $ 30,200,000 |  | $ 8,900,000
Credit Facility | Elected Commitments |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |
Credit facility borrowing base |  | $ 1,500,000,000 |  |  |  |  |
Amended and Restated Credit Facility | Credit Facility | Secured Overnight Financing Rate (SOFR) |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |
Spread on variable rate (as a percent) |  |  |  |  | 0.10% |  |
Amended and Restated Credit Facility | Credit Facility | Minimum |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |
Commitment fee percentage |  |  |  |  | 0.375% |  |
Amended and Restated Credit Facility | Credit Facility | Minimum | Secured Overnight Financing Rate (SOFR) |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |
Spread on variable rate (as a percent) |  |  |  |  | 1.75% |  |
Amended and Restated Credit Facility | Credit Facility | Minimum | Alternative Base Rate (ABR) |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |
Spread on variable rate (as a percent) |  |  |  |  | 0.75% |  |
Amended and Restated Credit Facility | Credit Facility | Maximum |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |
Commitment fee percentage |  |  |  |  | 0.50% |  |
Amended and Restated Credit Facility | Credit Facility | Maximum | Secured Overnight Financing Rate (SOFR) |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |
Spread on variable rate (as a percent) |  |  |  |  | 2.75% |  |
Amended and Restated Credit Facility | Credit Facility | Maximum | Alternative Base Rate (ABR) |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |
Spread on variable rate (as a percent) |  |  |  |  | 1.75% |  |

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