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Stock-Based Compensation - Narrative (Details) - USD ($) |  |  |  | 12 Months Ended |
--- | --- | --- | --- | --- | ---
Feb. 28, 2025 | Jan. 31, 2025 | Oct. 01, 2021 | Dec. 31, 2024 | Dec. 31, 2023 | Dec. 31, 2022 | May 04, 2023
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |
Fair value of award |  |  |  | $ 53,000,000 | $ 31,000,000 | $ 76,000,000 |
Additional awards granted (in shares) |  |  | 1,577,554 |  |  |  |
Minimum |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |
Options granted (in dollars per shares) |  |  | $ 8.47 |  |  |  |
Maximum |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |
Options granted (in dollars per shares) |  |  | 28.72 |  |  |  |
Restricted Stock Units |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |
Fair value of award |  |  |  | $ 25,000,000 | $ 9,000,000 | $ 9,000,000 |
Restricted Stock Units | Employee |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |
Award vesting period |  |  |  | 3 years |  |  |
Granted (in dollars per share) |  |  |  | $ 25.87 | $ 26.12 | $ 24.81 |
Granted (in shares) |  |  |  | 2,196,947 |  |  |
Share-based compensation arrangement by share-based payment award, equity instruments other than options, vested in period (in shares) |  |  |  | 874,411 |  |  |
Share-based compensation arrangements by share-base payment award, equity instrument other than options, vested in period, weighted average grant date fair value (in dollars per share) |  |  |  | $ 20.46 |  |  |
Restricted Stock Units | Employee | Minimum |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |
Expected forfeiture rate |  |  |  | 0.00% |  |  |
Restricted Stock Units | Employee | Maximum |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |
Expected forfeiture rate |  |  |  | 5.00% |  |  |
Restricted Stock Units | Non-employee |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |
Granted (in dollars per share) |  |  |  | $ 28.08 | $ 24.46 | $ 35.19 |
Annual forfeiture rate |  |  |  | 0.00% |  |  |
Granted (in shares) |  |  |  | 64,107 |  |  |
Share-based compensation arrangement by share-based payment award, equity instruments other than options, vested in period (in shares) |  |  |  | 57,239 |  |  |
Share-based compensation arrangements by share-base payment award, equity instrument other than options, vested in period, weighted average grant date fair value (in dollars per share) |  |  |  | $ 24.46 |  |  |
Restricted Stock Awards |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |
Granted (in dollars per share) |  |  | $ 22.25 |  |  |  |
Granted (in shares) |  |  | 3,364,354 |  |  |  |
Share-based compensation arrangement by share-based payment award, equity instruments other than options, vested in period (in shares) |  |  |  | 1,076,523 |  |  |
Share-based compensation arrangements by share-base payment award, equity instrument other than options, vested in period, weighted average grant date fair value (in dollars per share) |  |  |  | $ 22.25 |  |  |
Fair value of award |  |  |  | $ 26,000,000 | $ 22,000,000 | $ 22,000,000 |
TSR Performance Share Awards |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |
Granted (in dollars per share) |  |  |  | $ 19.38 |  |  |
Granted (in shares) |  |  |  | 541,865 |  |  |
Performance period |  |  |  | 3 years |  |  |
Performance period |  |  |  | 3 years |  |  |
Cash payments for share-based compensation |  |  |  | $ 0 | $ 0 | $ 0 |
TSR Performance Share Awards | Subsequent Event |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |
Share-based compensation arrangement by share-based payment award, equity instruments other than options, vested in period (in shares) |  | 1,103,157 |  |  |  |  |
Cash payments for share-based compensation | $ 1,000,000 |  |  |  |  |  |
Fair value of award |  | $ 20,000,000 |  |  |  |  |
Market Based Performance Share Awards |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |
Rights to share portion of award, maximum percent |  |  |  | 100.00% |  |  |
Rights to cash portion of award, maximum percent |  |  |  | 100.00% |  |  |
Employee Performance Share Awards |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |
Performance period |  |  |  | 3 years |  |  |
Award vesting percentage |  |  |  | 100.00% |  |  |
Minimum operating cash flow for performance based award |  |  |  | $ 100,000,000 |  |  |
Share-based compensation arrangement by share-based payment award, equity instruments other than options, vested in period (in shares) |  |  |  | 73,314 |  |  |
Share-based compensation arrangements by share-base payment award, equity instrument other than options, vested in period, weighted average grant date fair value (in dollars per share) |  |  |  | $ 20.46 |  |  |
Coterra Energy Inc. 2023 Equity Incentive Plan |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |
Number of shares available for issuance (in shares) |  |  |  | 18,400,000 |  |  | 22,950,000

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