CONSOLIDATED BALANCE SHEET (Unaudited) (Parenthetical) - USD ($) $ in Millions	Mar. 31, 2020	Dec. 31, 2019
Cash and cash equivalents	$ 428	$ 247
Receivables	838	1,062
Other current assets (Note 5) ($5 and $5 related to Altus VIE)	642	652
Gathering, transmission and processing facilities	674	799
Other	1,141	1,140
Less: Accumulated depreciation, depletion, and amortization	33,652	28,987
Equity method interests	1,337	1,258
Deferred charges and other	560	730
Current debt	544	11
Other current liabilities	953	1,149
Long-term debt	8,336	8,555
Asset retirement obligation	1,814	1,811
Other	$ 562	$ 520
Common stock, par value (in USD per share)	$ 0.625	$ 0.625
Common stock, shares authorized (in shares)	860,000,000	860,000,000
Common stock, shares issued (in shares)	418,374,523	417,026,863
Treasury stock, shares (in shares)	40,950,727	40,964,193
Altus VIE
Cash and cash equivalents	$ 19	$ 6
Receivables	89	88
Other current assets (Note 5) ($5 and $5 related to Altus VIE)	5	5
Gathering, transmission and processing facilities	209	203
Other	4	4
Less: Accumulated depreciation, depletion, and amortization	4	1
Equity method interests	1,337	1,258
Deferred charges and other	4	4
Current debt	0	10
Other current liabilities	12	21
Long-term debt	468	396
Asset retirement obligation	61	60
Other	$ 170	$ 107