FAIR VALUE MEASUREMENTS (Details) (USD $)	Dec. 31, 2014	Dec. 31, 2013
Liabilities:
Fair value, assets, level 1 to level 2 transfers, amount	$ 0
Recurring basis
Assets:
Cash equivalents	4,600,000	171,300,000
Liabilities:
Acquisition-related contingent consideration	(308,800,000)	(355,800,000)
Recurring basis \| Quoted Prices in Active Markets for Identical Assets (Level 1)
Assets:
Cash equivalents	2,800,000	171,300,000
Liabilities:
Acquisition-related contingent consideration	0	0
Recurring basis \| Significant Other Observable Inputs (Level 2)
Assets:
Cash equivalents	1,800,000	0
Liabilities:
Acquisition-related contingent consideration	0	0
Recurring basis \| Significant Unobservable Inputs (Level 3)
Assets:
Cash equivalents	0	0
Liabilities:
Acquisition-related contingent consideration	(308,800,000)	(355,800,000)
Prepaid Expenses and Other Current Assets \| Significant Other Observable Inputs (Level 2)
Liabilities:
Carrying value of time deposits	$ 42,600,000	$ 25,200,000

- Definition

Any certificate of deposit or savings account held by a bank or other financial institution for a short-term specified period of time. Because of their short-term, time deposits are considered highly liquid investments that are both readily convertible to known amounts of cash and so near their maturity that they present insignificant risk of changes in value because of changes in interest rates. Generally, only investments with original maturities of three months or less qualify under that definition. Original maturity means original maturity to the entity holding the investment. For example, both a three-month US Treasury bill and a three-year Treasury note purchased three months from maturity qualify as cash equivalents. However, a Treasury note purchased three-years ago does not become a cash equivalent when its remaining maturity is three months.

+ References+ Details