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v3.22.0.1

ACQUISITIONS, DIVESTITURES AND OTHER TRANSACTIONS - NARRATIVE (Details) ft² in Thousands, shares in Millions, a in Millions, $ in Millions | 1 Months Ended | 2 Months Ended | 5 Months Ended | 9 Months Ended | 12 Months Ended |
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Jan. 31, 2022 USD ($) | Dec. 31, 2021 USD ($) shares | Nov. 30, 2021 USD ($) | Oct. 31, 2021 USD ($) | Jul. 31, 2021 USD ($) | Mar. 31, 2021 USD ($) shares | Dec. 31, 2020 USD ($) | Oct. 31, 2020 USD ($) | Dec. 31, 2019 USD ($) | Nov. 30, 2019 USD ($) ft² | Sep. 30, 2019 USD ($) | Aug. 31, 2019 USD ($) | Dec. 31, 2020 USD ($) | Dec. 31, 2019 USD ($) | Sep. 30, 2021 USD ($) | Dec. 31, 2021 USD ($) shares | Aug. 31, 2020 USD ($) a
Asset Acquisition, Disposition and Other Transactions [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Proceeds from real estate assets disposed |  |  |  |  |  |  |  |  | $ 565 |  |  |  |  |  |  |  |
Finance lease |  | $ 589 |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 589 |
Permian EOR Business Unit |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Asset Acquisition, Disposition and Other Transactions [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Net purchase price |  |  | $ 285 |  |  |  |  |  |  |  |  |  |  |  |  |  |
Anadarko Petroleum Corporation |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Asset Acquisition, Disposition and Other Transactions [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Net purchase price |  |  |  |  |  |  |  |  |  |  |  | $ 35,700 |  |  |  |  |
Revenues from date of the acquisition |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 4,200 |  |  |
Net loss attributable to common shareholders from date of merger |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 1,700 |  |  |
Ecopetrol Joint Venture |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Asset Acquisition, Disposition and Other Transactions [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Area of development in joint venture | ft² |  |  |  |  |  |  |  |  |  | 97 |  |  |  |  |  |  |
Ownership percentage in joint venture |  |  |  |  |  |  |  |  |  | 51.00% |  |  |  |  |  |  |
Plains All American Pipeline, LP |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Asset Acquisition, Disposition and Other Transactions [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Net proceeds from sale of equity investment |  |  |  |  |  |  |  |  |  |  | $ 646 |  |  |  |  |  |
Pre-tax gain on sale of equity investment |  |  |  |  |  |  |  |  |  |  | $ 114 |  |  |  |  |  |
Ecopetrol | Ecopetrol Joint Venture |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Asset Acquisition, Disposition and Other Transactions [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Amount due at closing |  |  |  |  |  |  |  |  |  | $ 750 |  |  |  |  |  |  |
Carried capital |  |  |  |  |  |  |  |  |  | $ 750 |  |  |  |  |  |  |
Minority interest in new venture |  |  |  |  |  |  |  |  |  | 49.00% |  |  |  |  |  |  |
Gain on sale |  |  |  |  |  |  |  |  |  | $ 563 |  |  |  |  |  |  |
Percentage share of capital expenditures |  |  |  |  |  |  |  |  |  | 75.00% |  |  |  |  |  |  |
Share of capital expenditures (up to) |  |  |  |  |  |  |  |  |  | $ 750 |  |  |  |  |  |  |
Failed Sale-Leaseback |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Asset Acquisition, Disposition and Other Transactions [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Lease term |  |  |  |  |  |  |  |  | 13 years |  |  |  |  | 13 years |  |  |
Finance lease |  |  |  |  |  |  |  |  | $ 300 |  |  |  |  | $ 300 |  |  |
Disposed of by Sale | Oil and Gas Columbia Assets |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Asset Acquisition, Disposition and Other Transactions [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Gain (loss) on sale |  |  |  |  |  |  | $ (353) |  |  |  |  |  |  |  |  |  |
Disposed of by Sale | Non-core Permian acreage |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Asset Acquisition, Disposition and Other Transactions [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Gain (loss) on sale |  |  |  |  |  |  |  |  |  |  |  |  | $ (820) |  |  |  |
Disposed of by Sale | Wyoming, Colorado, and Utah Assets |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Asset Acquisition, Disposition and Other Transactions [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Proceeds received for divested assets |  |  |  |  |  |  |  | $ 1,000 |  |  |  |  |  |  |  |  |
Gain (loss) on sale |  |  |  |  |  |  |  | (440) |  |  |  |  |  |  |  |  |
Area of land sold (in acres) | a |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 4.5
Area of fee surface acres (in acres) | a |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 1.0
Sale consideration |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 1,330
Liabilities associated with sale |  |  |  |  |  |  |  | $ 329 |  |  |  |  |  |  |  |  |
Disposed of by Sale | Ghana Operations |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Asset Acquisition, Disposition and Other Transactions [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Proceeds received for divested assets |  |  |  | $ 555 |  |  |  |  |  |  |  |  |  |  |  |  |
Sale consideration |  |  |  | 750 |  |  |  |  |  |  |  |  |  |  |  |  |
Settlement of certain tax claims related to historical operations in Ghana |  |  |  | 170 |  |  |  |  |  |  |  |  |  |  |  |  |
Disposed of by Sale | Permian Basin |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Asset Acquisition, Disposition and Other Transactions [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Proceeds received for divested assets |  |  |  |  | $ 475 |  |  |  |  |  |  |  |  |  |  |  |
Disposed of by Sale | Permian Basin | Subsequent event |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Asset Acquisition, Disposition and Other Transactions [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Proceeds received for divested assets | $ 190 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disposed of by Sale | DJ Basin |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Asset Acquisition, Disposition and Other Transactions [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Proceeds received for divested assets |  |  |  |  |  | $ 280 |  |  |  |  |  |  |  |  |  |  |
Discontinued Operations, Held-for-Sale | Ghana Operations |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Asset Acquisition, Disposition and Other Transactions [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Sale consideration |  |  |  | $ 750 |  |  |  |  |  |  |  |  |  |  |  |  |
Discontinued Operations, Held-for-Sale | Permian Basin |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Asset Acquisition, Disposition and Other Transactions [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disposals of property, plant and equipment, net |  | 72 |  |  |  |  |  |  |  |  |  |  |  |  |  | 72 |
Asset retirement obligations |  | $ 7 |  |  |  |  |  |  |  |  |  |  |  |  |  | 7 |
Discontinued Operations | Ghana Operations |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Asset Acquisition, Disposition and Other Transactions [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
After-tax loss contingency |  |  |  |  |  |  |  |  |  |  |  |  |  |  | $ (31) | $ (437) |
Disposal Group, Disposed of by Sale, Not Discontinued Operations | WES |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Asset Acquisition, Disposition and Other Transactions [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Number of shares sold (in shares) | shares |  | 2.5 |  |  |  | 11.5 |  |  |  |  |  |  |  |  |  | 14.0 |
Net proceeds from sale of equity investment |  | $ 50 |  |  |  | $ 200 |  |  |  |  |  |  |  |  |  | $ 250 |

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- Definition The cash inflow associated with the sale of equity method investments, which are investments in joint ventures and entities in which the entity has an equity ownership interest normally of 20 to 50 percent and exercises significant influence. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 12 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=123570139&loc=d3e3179-108585 + Details
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- Definition Cash received for the sale of real estate that is not part of an investing activity during the current period. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 12 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=123570139&loc=d3e3179-108585 + Details
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