SHARE-BASED COMPENSATION (Details) - USD ($) $ in Millions	3 Months Ended		12 Months Ended
	Jun. 30, 2015	Jun. 30, 2013	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013	Apr. 30, 2014
Components and classification of share-based compensation expense
Share-based compensation			$ 140.1	$ 78.2	$ 45.5
Share based compensation expense	$ 6.0
Modified awards share based compensation expense			$ 12.0
Reduction in stock-based compensation expense due to change in classification from equity awards to liability awards		$ 6.0
Stock-based compensation expense due to change in classification from equity awards to liability awards		$ 21.0
2011 Omnibus Incentive Plan
Components and classification of share-based compensation expense
Shares reserved for future issuance (in shares)						20,000,000
Number of shares available for future grants			13,119,260
Maximum | 2011 Omnibus Incentive Plan
Components and classification of share-based compensation expense
Total number of shares approved for grant by the Company under the share-based compensation plans						18,000,000
Research and development expenses
Components and classification of share-based compensation expense
Share-based compensation			$ 6.0	5.6	0.0
Selling, general and administrative expenses
Components and classification of share-based compensation expense
Share-based compensation			134.1	72.6	45.5
Stock options
Components and classification of share-based compensation expense
Share-based compensation			17.1	18.2	17.3
RSUs
Components and classification of share-based compensation expense
Share-based compensation			$ 123.0	$ 60.0	$ 28.2