Amount of consideration transferred in asset acquisition. Includes, but is not limited to, cash, liability incurred by acquirer, and equity interest issued by acquirer.

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
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-SubTopic 50
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-Name Accounting Standards Codification
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Acquisitions and Dispositions - Announced Acquisition of Shell Permian Assets - Textual (Details) $ in Millions	1 Months Ended	9 Months Ended
	Sep. 30, 2021 USD ($) a mi	Sep. 30, 2021 USD ($) a	Sep. 30, 2020 USD ($)
Asset Acquisition [Line Items]
Deposit recorded in Cash Flows from Investing - Other		$ 386	$ 31
Shell Permian Assets [Member]
Asset Acquisition [Line Items]
Deposit recorded in Cash Flows from Investing - Other		$ 475
Shell Permian Assets [Member] \| Scenario Plan [Member]
Asset Acquisition [Line Items]
Total asset consideration	$ 9,500
Area of land \| a	225,000	225,000
Length of operated crude, gas and water pipelines and infrastructure \| mi	600