CONTRACT ASSETS AND CONTRACT LIABILITIES (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018
Contract Assets
Balance at beginning of year	$ 345.6	$ 366.2
Acquisitions	237.5	0.0
Recognized in current year	619.3	426.8
Reclassified to accounts receivable	(578.6)	(432.3)
Foreign currency impact	(0.4)	(15.1)
Balance at December 31	623.4	345.6
Contract Liabilities
Balance at beginning of year	444.8	463.7
Acquisitions	333.9	0.0
Recognized in current year	917.5	230.1
Amounts in beginning balance reclassified to revenue	(410.6)	(199.7)
Current year amounts reclassified to revenue	(483.5)	(30.9)
Foreign currency impact	(2.4)	(18.4)
Balance at December 31	$ 799.7	$ 444.8