Condensed Consolidated Balance Sheets (Unaudited) (USD $) In Millions, unless otherwise specified	Mar. 31, 2015		Dec. 31, 2014
Current assets:
Cash and cash equivalents	$ 549		$ 464
Trade accounts receivable	995		953
Other accounts receivable	1,401		1,610
Inventories:
Materials and supplies, net	1,919	[1]	1,886	[1]
Mill and leach stockpiles	1,877		1,914
Product	1,442		1,561
Other current assets	671		657
Total current assets	8,854		9,045
Property, plant, equipment and mining development costs, net	26,595		26,220
Oil and gas properties, net - full cost method
Subject to amortization, less accumulated amortization	6,713		9,187
Not subject to amortization	9,665		10,087
Long-term mill and leach stockpiles	2,261		2,179
Other assets	1,977		1,956
Total assets	56,065		58,674
Current liabilities:
Accounts payable and accrued liabilities	3,111		3,653
Current portion of debt	558		478
Accrued income taxes	364		410
Current portion of environmental and asset retirement obligations	317		296
Dividends payable	60		335
Total current liabilities	4,410		5,172
Long-term debt, less current portion	19,754		18,371
Deferred income taxes	5,625		6,398
Environmental and asset retirement obligations, less current portion	3,678		3,647
Other liabilities	1,812		1,861
Total liabilities	35,279		35,449
Redeemable noncontrolling interest	755		751
Stockholders’ equity:
Common stock	117		117
Capital in excess of par value	22,307		22,281
(Accumulated deficit) retained earnings	(2,398)		128
Accumulated other comprehensive loss	(532)		(544)
Common stock held in treasury	(3,701)		(3,695)
Total stockholders’ equity	15,793		18,287
Noncontrolling interests	4,238		4,187
Total equity	20,031		22,474
Total liabilities and equity	$ 56,065		$ 58,674

[1] Materials and supplies inventory was net of obsolescence reserves totaling $21 million at March 31, 2015, and $20 million at December 31, 2014.