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Percentage Of Share Awards Based On Shareholder Return

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Share-Based Compensation Arrangement By Share-Based Payment Award, Cash Payment Value Equal To Number Of Shares

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Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other Than Options, Additional Shares Granted

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Amount of expense for award under share-based payment arrangement. Excludes amount capitalized.

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Period over which grantee's right to exercise award under share-based payment arrangement is no longer contingent on satisfaction of service or performance condition, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days. Includes, but is not limited to, combination of market, performance or service condition.

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The number of grants made during the period on other than stock (or unit) option plans (for example, phantom stock or unit plan, stock or unit appreciation rights plan, performance target plan).

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- Definition

Per share or unit weighted-average intrinsic value of award granted under share-based payment arrangement. Excludes share and unit options.

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The weighted average fair value at grant date for nonvested equity-based awards issued during the period on other than stock (or unit) option plans (for example, phantom stock or unit plan, stock or unit appreciation rights plan, performance target plan).

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- Definition

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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Equity-Based Compensation - Narrative (Details) - USD ($) $ / shares in Units, $ in Thousands		3 Months Ended		9 Months Ended
	May 31, 2024	Sep. 30, 2024	Sep. 30, 2023	Sep. 30, 2024	Sep. 30, 2023
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Cash paid to settle legacy Enerplus equity-based compensation awards	$ 102,393
Enerplus Corporation Acquisition
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Cash paid to settle legacy Enerplus equity-based compensation awards	$ 102,400
Equity-Classified Awards
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based compensation expense		$ 5,900	$ 10,100	$ 16,100	$ 37,300
Liability-Classified Awards
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based compensation expense		$ 0	$ 0	$ 0	$ 0
Restricted Stock Units (RSUs)
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Awards granted (in shares)				148,325
Weighted average grant date fair value (in dollars per share)				$ 165.59
Restricted Stock Units (RSUs) \| Vesting period one
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Award vesting period				1 year
Restricted Stock Units (RSUs) \| Vesting period two
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Award vesting period				3 years
Restricted Stock Units (RSUs) \| Vesting period three
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Award vesting period				4 years
Performance Share Units \| Minimum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Award vesting period				3 years
Performance Share Units \| Maximum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Award vesting period				4 years
Absolute TSR
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Additional shares granted (in shares)				15,808
Weighted average grant date value (in dollars per share)				$ 233.01
Absolute TSR \| Minimum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares granted percentage of earnings (as a percent)				0.00%
Absolute TSR \| Maximum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares granted percentage of earnings (as a percent)				300.00%
Relative TSR
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares granted percentage of earnings (as a percent)				100.00%
Additional shares granted (in shares)				47,428
Weighted average grant date value (in dollars per share)				$ 201.02
Relative TSR \| Minimum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares granted percentage of earnings (as a percent)				0.00%
Relative TSR \| Maximum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares granted percentage of earnings (as a percent)				200.00%
Leverage Stock Units
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Award vesting period				3 years
Awards granted (in shares)				0
Leverage Stock Units \| Minimum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Award vesting period				3 years
Leverage Stock Units \| Maximum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Award vesting period				4 years
Phantom Units
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Awards granted (in shares)				10,664
Weighted average grant date fair value (in dollars per share)				$ 163.82
Number of shares for cash payment value (in shares)		1		1