Consolidated Balance Sheets - USD ($) $ in Millions	Sep. 30, 2017	Dec. 31, 2016
Current assets:
Cash and cash equivalents	$ 1,795	$ 2,488
Receivables, less reserve of $7 and $6	945	748
Notes receivable	745	0
Inventories	132	136
Other current assets	62	66
Current assets held for sale	11	227
Total current assets	3,690	3,665
Equity method investments	836	931
Property, plant and equipment, less accumulated depreciation, depletion and amortization of $21,669 and $20,255	17,645	16,727
Goodwill	115	115
Other noncurrent assets	607	558
Noncurrent assets held for sale	54	9,098
Total assets	22,947	31,094
Current liabilities:
Accounts payable	1,313	967
Payroll and benefits payable	99	129
Accrued taxes	162	94
Other current liabilities	188	243
Debt, Current	0	686
Current liabilities held for sale	0	121
Total current liabilities	1,762	2,240
Long-term debt	6,488	6,581
Deferred tax liabilities	844	769
Defined benefit postretirement plan obligations	330	345
Asset retirement obligations	1,522	1,602
Deferred credit and other liabilities	217	225
Noncurrent liabilities held for sale	9	1,791
Total liabilities	11,172	13,553
Commitments and contingencies
Stockholders' Equity
Preferred stock - no shares issued or outstanding (no par value, 26 million shares authorized)	0	0
Issued – 937 million shares and 937 million shares (par value $1 per share, 1.1 billion shares authorized)	937	937
Common stock, securities exchangeable into common stock - no shares issued or outstanding (no par value, 29 million shares authorized)	0	0
Held in treasury, at cost – 87 million and 90 million shares	(3,324)	(3,431)
Additional paid-in capital	7,367	7,446
Retained earnings	6,849	12,672
Accumulated other comprehensive loss	(54)	(83)
Total stockholders' equity	11,775	17,541
Total liabilities and stockholders' equity	$ 22,947	$ 31,094