CONSOLIDATED BALANCE SHEET (Unaudited) (Parenthetical) - USD ($) $ in Millions	Jun. 30, 2020	Dec. 31, 2019
Cash and cash equivalents	$ 135	$ 247
Receivables	871	1,062
Other current assets (Note 5) ($5 and $5 related to Altus VIE)	652	652
Gathering, transmission and processing facilities	676	799
Other	1,140	1,140
Less: Accumulated depreciation, depletion, and amortization	34,090	28,987
Equity method interests	1,408	1,258
Deferred charges and other	589	730
Current debt	294	11
Other current liabilities	957	1,149
Long-term debt	8,523	8,555
Asset retirement obligation	1,836	1,811
Other	$ 675	$ 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)	418,407,164	417,026,863
Treasury stock, shares (in shares)	40,948,811	40,964,193
Altus VIE
Cash and cash equivalents	$ 2	$ 6
Receivables	91	88
Other current assets (Note 5) ($5 and $5 related to Altus VIE)	5	5
Gathering, transmission and processing facilities	211	203
Other	3	4
Less: Accumulated depreciation, depletion, and amortization	7	1
Equity method interests	1,408	1,258
Deferred charges and other	4	4
Current debt	0	10
Other current liabilities	11	21
Long-term debt	493	396
Asset retirement obligation	62	60
Other	$ 181	$ 107