Consolidated Balance Sheets (USD $) In Millions, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013
Current assets:
Cash and cash equivalents	$ 2,398	$ 264
Receivables, less reserve of $3 and $0	1,729	2,134
Inventories	357	364
Other current assets	109	213
Total current assets	4,593	2,975
Equity method investments	1,113	1,201
Property, plant and equipment, less accumulated depreciation, depletion and amortization of $21,884 and $21,895	29,040	28,145
Goodwill	459	499
Other noncurrent assets	806	2,800
Total assets	36,011	35,620
Current liabilities:
Commercial paper	0	135
Accounts payable	2,545	2,206
Payroll and benefits payable	191	240
Accrued taxes	285	1,445
Other current liabilities	290	239
Long-term debt due within one year	1,068	68
Total current liabilities	4,379	4,333
Long-term debt	5,323	6,394
Deferred tax liabilities	2,486	2,492
Defined benefit postretirement plan obligations	598	604
Asset retirement obligations	1,917	2,009
Deferred credits and other liabilities	288	444
Total liabilities	14,991	16,276
Commitments and contingencies
Stockholders’ Equity
Preferred stock no shares issued or outstanding (no par value, 26 million shares authorized)	0	0
Common stock issued - 770 million and 770 million shares (par value $1 per share, 1.1 billion shares authorized)	770	770
Common stock, securities exchangeable into common stock - no shares issued or outstanding (no par value, 29 million shares authorized)	0	0
Common stock, held in treasury, at cost – 95 million and 73 million shares	(3,642)	(2,903)
Additional paid-in capital	6,531	6,592
Retained earnings	17,638	15,135
Accumulated other comprehensive loss	(277)	(250)
Total stockholders equity	21,020	19,344
Total liabilities and stockholders equity	$ 36,011	$ 35,620