CONDENSED CONSOLIDATED BALANCE SHEETS (Unaudited) (Parenthetical) - USD ($) $ in Millions	Jun. 30, 2019	Dec. 31, 2018
Preferred stock, par value (usd per share)	$ 0.01	$ 0.01
Preferred stock, shares authorized (shares)	20,000,000	20,000,000
Preferred stock, shares outstanding (shares)	5,603,458	5,603,458
Common stock, par value (usd per share)	$ 0.01	$ 0.01
Common stock, shares authorized (shares)	3,000,000,000	2,000,000,000
Common stock, shares issued (shares)	1,634,486,189	913,715,512
Treasury stock, common shares (shares)	5,607,556	3,246,553
VIE, cash and cash equivalents	$ 4	$ 4
VIE, proved oil and natural gas properties	29,675	25,407
VIE, accumulated depreciation, depletion and amortization	(18,860)	(17,886)
VIE, other current liabilities	1,430	1,599
Variable Interest Entities, Primary Beneficiary [Member]
VIE, cash and cash equivalents	2	1
VIE, proved oil and natural gas properties	755	755
VIE, accumulated depreciation, depletion and amortization	(710)	(707)
VIE, other current liabilities	$ 1	$ 2

Amount of accumulated depreciation, depletion and amortization for physical assets used in the normal conduct of business to produce goods and services.

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Oil and Gas properties with proved reserves under the successful effort method.

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