RECENT ACCOUNTING PRONOUNCEMENTS Adoption of ASU 2014-09 - Hypothetical Results Under Previous Standard (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2018	Mar. 31, 2017	Dec. 31, 2017
Revenue	$ 689.3	$ 625.8
Costs of revenue	465.1	422.7
Income tax expense	7.6	9.1
Net income	101.3	$ 45.6
Receivables, net	581.4		$ 629.6
Inventories, net	404.9		311.9
Total current assets	173.0		147.4
Deferred income taxes	167.0		149.9
Other non-current assets	202.8		202.9
Accrued liabilities	394.2		384.4
Other non-current liabilities	181.4		175.6
Retained earnings	1,891.8		$ 1,856.1
Hypothetical Amount Under Previous Standard [Member] | Accounting Standards Update 2014-09 [Member]
Revenue	695.1
Costs of revenue	470.8
Net income	101.4
Receivables, net	635.3
Inventories, net	338.4
Total current assets	147.2
Deferred income taxes	166.0
Accrued liabilities	349.5
Other non-current liabilities	182.4
Retained earnings	1,896.0
Hypothetical Effect of Change Due to Adoption of New Accounting Pronouncement [Member] | Accounting Standards Update 2014-09 [Member]
Revenue	5.8
Costs of revenue	5.7
Net income	0.1
Receivables, net	53.9
Inventories, net	(66.5)
Total current assets	(25.8)
Deferred income taxes	(1.0)
Accrued liabilities	(44.7)
Other non-current liabilities	1.0
Retained earnings	$ 4.2