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JOINT VENTURES - Mezzanine Equity (Details) - USD ($) $ in Millions		3 Months Ended
		Mar. 31, 2020	Mar. 31, 2019
Mezzanine Equity - Redeemable Noncontrolling Interests
Beginning balance		$ 802
Net income attributable to noncontrolling interests		(30)	$ (28)
Distributions to noncontrolling interest holders	[1]	(26)	(21)
Ending balance		816
Mezzanine Equity - Redeemable Noncontrolling Interests
Mezzanine Equity - Redeemable Noncontrolling Interests
Beginning balance		802	756
Net income attributable to noncontrolling interests		30	28
Contributions from noncontrolling interest holders, net		2	0
Accrued distributions			0
Distributions to noncontrolling interest holders		(18)	(18)
Ending balance		816	766
Ares JV | Mezzanine Equity - Redeemable Noncontrolling Interests
Mezzanine Equity - Redeemable Noncontrolling Interests
Beginning balance		802	756
Net income attributable to noncontrolling interests		30	28
Contributions from noncontrolling interest holders, net		0	0
Accrued distributions			0
Distributions to noncontrolling interest holders		(18)	(18)
Ending balance		814	766
Elk Hills Carbon JV | Mezzanine Equity - Redeemable Noncontrolling Interests
Mezzanine Equity - Redeemable Noncontrolling Interests
Beginning balance		0	0
Net income attributable to noncontrolling interests		0	0
Contributions from noncontrolling interest holders, net		2	0
Accrued distributions			0
Distributions to noncontrolling interest holders		0	0
Ending balance		$ 2	$ 0
[1] The above tables exclude amounts related to redeemable noncontrolling interests reported as mezzanine equity. See Note 6 Joint Ventures for more information.

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Decrease in redeemable noncontrolling interest balance from payment of dividends or other distributions by the non-wholly owned subsidiary or partially owned entity, included in the consolidation of the parent entity, to the noncontrolling interest holders.

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Amount after tax of income (loss) attributable to redeemable noncontrolling shareholder, unit holder, partner, or other equity holder of a joint venture.

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