INCOME TAXES: (Details 4) (Foreign, USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 31, 2013
Foreign tax credits
Tax credits carryback period	1 year
Tax credits carryforward period	10 years
Foreign tax credit carryforward	$ 280.0
2016
Foreign tax credits
Foreign tax credit carryforward	19.0
2018
Foreign tax credits
Foreign tax credit carryforward	70.5
2020
Foreign tax credits
Foreign tax credit carryforward	27.9
2021
Foreign tax credits
Foreign tax credit carryforward	11.7
2022
Foreign tax credits
Foreign tax credit carryforward	84.1
2023
Foreign tax credits
Foreign tax credit carryforward	$ 66.8