Net Income (Loss) Attributable to Noncontrolling Interests - Net Income (Loss) (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2015	Sep. 30, 2014	Sep. 30, 2015	Sep. 30, 2014
NET INCOME (LOSS) ATTRIBUTABLE TO NONCONTROLLING INTERESTS
Net income (loss) attributable to noncontrolling interests	$ 66	$ (138)	$ 188	$ (225)
Minera Yanacocha S.R.L.
NET INCOME (LOSS) ATTRIBUTABLE TO NONCONTROLLING INTERESTS
Net income (loss) attributable to noncontrolling interests		(6)	23	(55)
PTNNT - Batu Hijau
NET INCOME (LOSS) ATTRIBUTABLE TO NONCONTROLLING INTERESTS
Net income (loss) attributable to noncontrolling interests	$ 66	(125)	177	(158)
TMAC
NET INCOME (LOSS) ATTRIBUTABLE TO NONCONTROLLING INTERESTS
Net income (loss) attributable to noncontrolling interests		(11)	(13)	(18)
Other
NET INCOME (LOSS) ATTRIBUTABLE TO NONCONTROLLING INTERESTS
Net income (loss) attributable to noncontrolling interests		$ 4	$ 1	$ 6