INCOME TAXES (Details) (USD $) In Millions, unless otherwise specified	1 Months Ended	3 Months Ended		9 Months Ended
	Sep. 30, 2013	Sep. 30, 2013	Sep. 30, 2012	Sep. 30, 2013	Sep. 30, 2012
Effective Tax Rate
Federal statutory rate applied to income before taxes (as a percent)		35.00%	35.00%	35.00%	35.00%
Differential arising from:
State (as a percent)		2.40%	0.60%	3.40%	1.30%
Non-deductible expenses (as a percent)		(5.20%)	0.50%	(17.30%)	0.60%
Domestic manufacturing deduction (as a percent)		1.50%	(2.40%)	9.80%	(2.70%)
Contingent consideration (as a percent)		(4.70%)	(0.40%)	(15.80%)	0.70%
2013 Federal research credit (as a percent)		16.30%		54.50%
Prior year federal research credits (as a percent)		0.90%		31.10%
Non-deductible transaction costs (as a percent)		(7.00%)		(19.40%)
Non-deductible loss on extinguishment of 2017 Notes (as a percent)		(24.40%)		(67.50%)
Impact of reserve for uncertain tax positions (as a percent)		(0.10%)	0.10%	2.60%	(6.70%)
Other (as a percent)		(1.40%)	(0.40%)	(5.30%)
Total (as a percent)		13.30%	33.00%	11.10%	28.20%
Principal amount of the 2017 Notes converted	$ 221.2
Federal | Trius Therapeutics, Inc.
Operating loss carryforwards
NOL carryforwards	192.8	192.8		192.8
NOL carryforwards to be utilized in future	$ 192.0	$ 192.0		$ 192.0