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THE ACQUISITION - AQCUISITION-RELATED COSTS (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Business Acquisition [Line Items]
Total	$ 339	$ 1,647	$ 0
Anadarko Petroleum Corporation
Business Acquisition [Line Items]
Employee severance and related employee cost	314	1,033
Licensing fees for critical seismic data	0	401
Bank, legal, consulting and other	25	213
Total	$ 339	$ 1,647

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Business Combination, Legal, Consulting, And Bank Fees

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Business Combination, Licensing Fees For Critical Seismic Data

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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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This element represents acquisition-related costs incurred to effect a business combination which costs have been expensed during the period. Such costs include finder's fees; advisory, legal, accounting, valuation, and other professional or consulting fees; general administrative costs, including the costs of maintaining an internal acquisitions department; and may include costs of registering and issuing debt and equity securities.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 805
-SubTopic 10
-Section 25
-Paragraph 23
-URI http://asc.fasb.org/extlink&oid=116868678&loc=d3e1043-128460

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Costs incurred to effect a business combination which have been expensed during the period. Such costs could include business integration costs, systems integration and conversion costs, and severance and other employee-related costs.

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