STOCKHOLDERS' EQUITY: - Non Controlling Interest (Details) - USD ($) $ in Millions	3 Months Ended	6 Months Ended
Jun. 30, 2020	Jun. 30, 2019	Jun. 30, 2020	Jun. 30, 2019
Non-controlling interest activity
Balance at the beginning of the period			$ 47.9	$ 45.4
Net earnings	$ 1.4	$ 2.0	2.8	3.0
Dividend paid			(2.6)	(0.1)
Balance at the end of the period	$ 48.1	$ 48.3	$ 48.1	$ 48.3

Total of all stockholders' equity (deficit) items, net of receivables from officers, directors, owners, and affiliates of the entity which is directly or indirectly attributable to that ownership interest in subsidiary equity which is not attributable to the parent (that is, noncontrolling interest, previously referred to as minority interest).

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