| **Fair Value Measurements and Disclosures - Narrative (Details) - USD ($) $ in Millions**        |        | 1 Months Ended | 3 Months Ended |        |
|--------------------------------------------------------------------------------------------------|--------|----------------|----------------|--------|
||
| **Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]** |   |           |           |   |   |
| Redeemable Noncontrolling Interest, Net                                                          |   | $ 97           | $ 97           |   | $ 0 |
| Proceeds from issuance of preferred equity                                                       |   |           | 99             | $ 0    |   |
| Issuance costs of preferred equity                                                               |   | $ 3            |           |   |   |
| Noble Midstream                                                                                  |   |           |           |   |   |
| **Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]** |   |           |           |   |   |
| Proceeds from issuance of preferred equity                                                       | $ 100  |           |           |   |   |
| Issuance costs of preferred equity                                                               | $ 3    |           |           |   |   |
| Marcellus Shale Firm Transportation Agreement                                                    |   |           |           |   |   |
| **Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]** |   |           |           |   |   |
| Firm Transportation Exit Cost Accrual                                                            |   |           | $ 92           | $ 0    |   |

| X                                                                                                                                                                                                                                                             |
|---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| - Definition
Long-term Purchase Commitment, Accrual
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| X                                                                                                                                                                                                                                                                                                                           |
|-----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| - Definition
Payment Of Stock Issuance Costs, Redeemable Convertible Preferred Stock
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No definition available.
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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.
+ References
No definition available.
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|--------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| - Definition
The cash inflow from issuance of callable preferred stock which is identified as being convertible to another type of financial security at the option of the issuer or the holder.
+ References
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|---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| - Definition
As of the reporting date, the aggregate carrying amount of all noncontrolling interests which are redeemable by the (parent) entity (1) at a fixed or determinable price on a fixed or determinable date, (2) at the option of the holder of the noncontrolling interest, or (3) upon occurrence of an event that is not solely within the control of the (parent) entity. This item includes noncontrolling interest holder's ownership (or holders' ownership) regardless of the type of equity interest (common, preferred, other) including all potential organizational (legal) forms of the investee entity.
+ References
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| X                                                                                                                                    |
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| X                                                                                                                                                                        |
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