JOINT VENTURES - Elk Hills Carbon (Details) $ in Millions	1 Months Ended
Jan. 31, 2020 USD ($)
OGCI \| Elk Hills Carbon JV
Business Acquisition [Line Items]
Partnership contribution	$ 2

The cash inflow from the capital received in cash from a partner in a partnership during the period.

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 14
-URI http://asc.fasb.org/extlink&oid=121586364&loc=d3e3255-108585

Name:	us-gaap_ProceedsFromPartnershipContribution
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration