CONSOLIDATED BALANCE SHEET (Unaudited) (Parenthetical) - USD ($) $ in Millions	Sep. 30, 2020	Dec. 31, 2019
Cash and cash equivalents	$ 162	$ 247
Receivables	899	1,062
Other current assets (Note 5) ($5 and $5 related to Altus VIE)	658	652
Gathering, transmission and processing facilities	677	799
Other	1,138	1,140
Less: Accumulated depreciation, depletion, and amortization	34,486	28,987
Equity method interests	1,524	1,258
Deferred charges and other	565	730
Current debt	184	11
Other current liabilities	803	1,149
Long-term debt	8,750	8,555
Asset retirement obligation	1,859	1,811
Other	$ 650	$ 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)	418,409,054	417,026,863
Treasury stock, shares (in shares)	40,948,811	40,964,193
Altus VIE
Cash and cash equivalents	$ 2	$ 6
Receivables	95	88
Other current assets (Note 5) ($5 and $5 related to Altus VIE)	5	5
Gathering, transmission and processing facilities	212	203
Other	3	4
Less: Accumulated depreciation, depletion, and amortization	10	1
Equity method interests	1,524	1,258
Deferred charges and other	5	4
Current debt	0	10
Other current liabilities	15	21
Long-term debt	580	396
Asset retirement obligation	63	60
Other	$ 184	$ 107