INCOME TAXES (Details 3) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 31, 2014 item	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Income Tax Disclosure [Abstract]
Statutory U.S. federal income tax rate	35.00%
Deferred tax assets, valuation allowance	$ 12.9	$ 31.1
State net operating loss carryforwards	33.9
Foreign net operating loss carryforwards	7.0
Net operating loss carryforwards, beginning expiration year	2015
Research and development credit carry forward	34.4	7.3
Research and development credit carry forward, beginning expiration year	2015
Research and development credit carry forward, ending expiration year	2029
Earnings from foreign subsidiaries that residual U.S. income taxes is not provided	440
Cumulative unrealized tax deductions related to stock option exercises and vested restricted shares	13.7
Realized tax deductions related to stock option exercises and vested restricted shares	3.5
Gross uncertain tax position	75.7	47.5	34.6	21.7
Liability for unrecognized tax benefits that would affect effective tax rate, if recognized	73.2
Number of tax years the company is currently open to audit by tax authorities	8
Liability for unrecognized tax benefits for interest and penalties	2.0
income tax receivables	$ 82.6	$ 6.2