STOCKHOLDER'S EQUITY: - Non Controlling Interest (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2016	Sep. 30, 2015	Sep. 30, 2016	Sep. 30, 2015
Non-controlling interest activity
Balance at the beginning of the period			$ 36.3	$ 32.1
Net earnings	$ 0.6	$ 1.0	1.9	3.5
Dividend paid		(0.1)		(0.5)
Balance at the end of the period	$ 38.2	$ 35.1	$ 38.2	$ 35.1