Condensed Consolidated Balance Sheets (Unaudited) - USD ($) $ in Millions		Mar. 31, 2016	Dec. 31, 2015
Current assets:
Cash and cash equivalents		$ 331	$ 224
Trade accounts receivable		837	689
Income and other tax receivables		1,182	1,414
Other accounts receivable		122	174
Inventories:
Materials and supplies, net	[1]	1,714	1,869
Mill and leach stockpiles		1,644	1,724
Product		1,170	1,195
Other current assets		233	173
Total current assets		7,233	7,462
Property, plant, equipment and mining development costs, net		27,376	27,509
Oil and gas properties, net - full cost method
Subject to amortization, less accumulated amortization and impairment		1,700	2,262
Not subject to amortization		1,743	4,831
Long-term mill and leach stockpiles		2,324	2,271
Other assets		2,288	2,242
Total assets		42,664	46,577
Current liabilities:
Accounts payable and accrued liabilities		2,987	3,363
Current portion of debt		1,139	649
Current portion of environmental and asset retirement obligations		270	272
Accrued income taxes		30	23
Total current liabilities		4,426	4,307
Long-term debt, less current portion		19,638	19,779
Deferred income taxes		4,442	4,288
Environmental and asset retirement obligations, less current portion		3,762	3,739
Other liabilities		1,659	1,656
Total liabilities		33,927	33,769
Redeemable noncontrolling interest		767	764
Stockholders’ equity:
Common stock		138	137
Capital in excess of par value		24,333	24,283
Accumulated deficit		(16,570)	(12,387)
Accumulated other comprehensive loss		(503)	(503)
Common stock held in treasury		(3,706)	(3,702)
Total stockholders’ equity		3,692	7,828
Noncontrolling interests		4,278	4,216
Total equity		7,970	12,044
Total liabilities and equity		$ 42,664	$ 46,577

[1] Materials and supplies inventory was net of obsolescence reserves totaling $28 million at March 31, 2016, and $29 million at December 31, 2015.