SEGMENT REPORTING - GEOGRAPHIC INFORMATION (Details) - USD ($) $ in Millions	3 Months Ended								12 Months Ended
	Dec. 31, 2016	Sep. 30, 2016	Jun. 30, 2016	Mar. 31, 2016	Dec. 31, 2015	Sep. 30, 2015	Jun. 30, 2015	Mar. 31, 2015	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Segment Reporting Information [Line Items]
Revenues	$ 730.4	$ 732.7	$ 753.1	$ 716.7	$ 659.2	$ 679.8	$ 700.6	$ 690.0	$ 2,932.9	$ 2,729.6	$ 2,599.0
Assets	3,370.1				3,140.9				3,370.1	3,140.9
Operating earnings									$ 506.6	$ 452.3	$ 384.0
% of Revenues									100.00%	100.00%	100.00%
Corporate, Non-Segment
Segment Reporting Information [Line Items]
Assets					322.2					$ 322.2	$ 324.9
Other operating segments
Segment Reporting Information [Line Items]
Export revenues from United States to customers in foreign countries									$ 43.0	24.4	24.5
United States
Segment Reporting Information [Line Items]
Revenues									$ 1,131.8	$ 966.3	$ 859.1
% of Revenues									38.60%	35.40%	33.10%
Europe
Segment Reporting Information [Line Items]
Revenues									$ 663.2	$ 663.5	$ 684.6
% of Revenues									22.60%	24.30%	26.30%
Asia Pacific Middle East and other
Segment Reporting Information [Line Items]
Revenues									$ 1,137.9	$ 1,099.8	$ 1,055.3
% of Revenues									38.80%	40.30%	40.60%
Domestic
Segment Reporting Information [Line Items]
Revenues									$ 1,722.0	$ 1,619.3	$ 1,552.8
Assets	1,846.8				1,781.8				1,846.8	1,781.8
Operating earnings									238.6	177.6	147.2
Foreign
Segment Reporting Information [Line Items]
Revenues									1,210.9	1,110.3	1,046.2
Assets	$ 1,523.3				$ 1,359.1				1,523.3	1,359.1
Operating earnings									268.0	274.7	236.8
Export revenues from United States to customers in foreign countries									$ 857.7	$ 880.8	$ 863.4