MERGER-RELATED RESTRUCTURING AND INTEGRATION COSTS (Details) (USD $)	3 Months Ended			9 Months Ended	12 Months Ended
	Sep. 30, 2011	Jun. 30, 2011	Mar. 31, 2011	Sep. 30, 2011	Dec. 31, 2010
Restructuring reserve
Balance at the beginning of the period	$ 23,789,000	$ 20,720,000	$ 26,459,000	$ 26,459,000
Costs incurred and charged to expense	4,380,000	21,774,000	17,539,000		134,821,000
Cash payments	(8,298,000)	(17,405,000)	(23,113,000)		(56,443,000)
Non-cash adjustments	(1,292,000)	(1,300,000)	(165,000)		(51,919,000)
Balance at the end of the period	18,579,000	23,789,000	20,720,000	18,579,000	26,459,000
Reversal of previously recognized restructuring accrual		2,000,000
Integration-related costs incurred	11,500,000			17,400,000
Integration-related costs paid				12,200,000
Employee Termination Costs
Cost-rationalization and integration initiatives
Approximate number of employees expected to be terminated (in employees)				500
Employee Termination Costs - Severance and Related Benefits
Restructuring reserve
Balance at the beginning of the period	6,773,000	9,446,000	24,789,000	24,789,000
Costs incurred and charged to expense	1,689,000	5,632,000	5,260,000		58,727,000
Cash payments	(7,848,000)	(8,305,000)	(20,603,000)		(33,938,000)
Non-cash adjustments	56,000
Balance at the end of the period	670,000	6,773,000	9,446,000	670,000	24,789,000
Employee Termination Costs - Share-Based Compensation
Restructuring reserve
Balance at the beginning of the period	1,543,000	3,281,000
Costs incurred and charged to expense	(286,000)	295,000	3,446,000		49,482,000
Cash payments		(2,033,000)
Non-cash adjustments	(576,000)		(165,000)		(49,482,000)
Balance at the end of the period	681,000	1,543,000	3,281,000	681,000
IPR&D Termination Costs
Restructuring reserve
Costs incurred and charged to expense					13,750,000
Cash payments					(13,750,000)
Contract Termination, Facility Closure and Other Costs
Restructuring reserve
Balance at the beginning of the period	15,473,000	7,993,000	1,670,000	1,670,000
Costs incurred and charged to expense	2,977,000	15,847,000	8,833,000		12,862,000
Cash payments	(450,000)	(7,067,000)	(2,510,000)		(8,755,000)
Non-cash adjustments	(772,000)	(1,300,000)			(2,437,000)
Balance at the end of the period	17,228,000	15,473,000	7,993,000	17,228,000	1,670,000
Operating lease obligation
Restructuring reserve
Costs incurred and charged to expense				9,700,000
Lease termination
Restructuring reserve
Costs incurred and charged to expense		$ 1,300,000