INCOME TAXES: (Details 3) - USD ($) $ in Millions	Dec. 31, 2015	Dec. 31, 2014
Assets:
Inventories	$ 27.6	$ 32.5
Capitalized exploration expenses	20.1	27.8
U.S. foreign tax credit carryforward, net of FIN 48 liability	187.4	144.8
U.S. tax effect of Peruvian deferred tax liability	171.2	251.4
Reserves	42.3	101.7
Mexican tax on consolidated dividends	5.5
Other	22.8	19.8
Total deferred tax assets	476.9	578.0
Liabilities:
Property, plant and equipment	(18.5)	(213.0)
Deferred charges	(38.1)	(74.9)
Other	(2.1)	(9.8)
Total deferred tax liabilities	(58.7)	(303.4)
Total net deferred tax assets / (liabilities)	$ 418.2	$ 274.6

Represents the amount as of the balance sheet date of the estimated future tax effects attributable to the difference between the methods used to account for capitalized exploration expenses for tax purposes and under generally accepted accounting principles.

No definition available.