ACCUMULATED OTHER COMPREHENSIVE LOSS (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2016	Mar. 31, 2015
Components of accumulated other comprehensive loss
Balance at the beginning of the period	$ (1,541.6)	$ (915.9)
Foreign currency translation adjustment	63.4	(411.3)
Pension adjustment	(0.4)	(0.4)
Balance at the end of the period	(1,478.6)	(1,327.6)
Foreign Currency Translation Adjustment
Components of accumulated other comprehensive loss
Balance at the beginning of the period	(1,529.4)	(886.5)
Foreign currency translation adjustment	63.4	(411.3)
Balance at the end of the period	(1,466.0)	(1,297.8)
Pension Adjustment
Components of accumulated other comprehensive loss
Balance at the beginning of the period	(12.2)	(29.4)
Pension adjustment	(0.4)	(0.4)
Balance at the end of the period	$ (12.6)	$ (29.8)