Consolidated Balance Sheets (Unaudited) - USD ($) $ in Millions	Sep. 30, 2020	Dec. 31, 2019
Current assets:
Cash and cash equivalents	$ 1,119	$ 858
Receivables, less reserve of $25 and $11	643	1,122
Inventories	77	72
Other current assets	83	83
Total current assets	1,922	2,135
Equity method investments	467	663
Property, plant and equipment, less accumulated depreciation, depletion and amortization of $19,782 and $18,003	16,029	17,000
Goodwill	0	95
Other noncurrent assets	245	352
Total assets	18,663	20,245
Current liabilities:
Accounts payable	730	1,307
Payroll and benefits payable	72	112
Accrued taxes	45	118
Other current liabilities	219	208
Long-term debt due within one year	500	0
Total current liabilities	1,566	1,745
Long-term debt	5,405	5,501
Deferred tax liabilities	184	186
Defined benefit postretirement plan obligations	182	183
Asset retirement obligations	236	243
Deferred credits and other liabilities	198	234
Total liabilities	7,771	8,092
Commitments and contingencies
Stockholders’ Equity
Preferred stock – no shares issued or outstanding (no par value, 26 million shares authorized)	0	0
Common stock:
Issued – 937 million shares (par value $1 per share, 1.925 billion shares authorized at September 30, 2020 and December 31, 2019)	937	937
Held in treasury, at cost – 147 million shares and 141 million shares	(4,089)	(4,089)
Additional paid-in capital	7,159	7,207
Retained earnings	6,828	7,993
Accumulated other comprehensive income	57	105
Total stockholders’ equity	10,892	12,153
Total liabilities and stockholders’ equity	$ 18,663	$ 20,245