Intangible Assets (Details) (USD $)	3 Months Ended		6 Months Ended			3 Months Ended		6 Months Ended			6 Months Ended	12 Months Ended	6 Months Ended	12 Months Ended	6 Months Ended	12 Months Ended	6 Months Ended	12 Months Ended	6 Months Ended
	Jun. 30, 2014	Jun. 30, 2013	Jun. 30, 2014	Jun. 30, 2013	Dec. 31, 2013	Jun. 30, 2014 GSK	Jun. 30, 2013 GSK	Jun. 30, 2014 GSK	Jun. 30, 2013 GSK	Dec. 31, 2013 GSK	Jun. 30, 2014 GSK BREO ELLIPTA	Dec. 31, 2013 GSK BREO ELLIPTA	Jun. 30, 2014 GSK RELVAR ELLIPTA Japan	Dec. 31, 2013 GSK RELVAR ELLIPTA Japan	Jun. 30, 2014 GSK RELVAR ELLIPTA Europe	Dec. 31, 2013 GSK RELVAR ELLIPTA Europe	Jun. 30, 2014 GSK ANORO ELLIPTA	Dec. 31, 2013 GSK ANORO ELLIPTA	Jun. 30, 2014 GSK ANORO ELLIPTA Europe
Intangible assets
Weighted Average Remaining Amortization Period											15 years 2 months 12 days	15 years 8 months 12 days	14 years 4 months 24 days	14 years 10 months 24 days	14 years 6 months	15 years	15 years 2 months 12 days	15 years 3 months 18 days	15 years 2 months 12 days
Gross Carrying Value						$ 200,000,000		$ 200,000,000		$ 125,000,000	$ 60,000,000	$ 60,000,000	$ 20,000,000	$ 20,000,000	$ 30,000,000	$ 15,000,000	$ 60,000,000	$ 30,000,000	$ 30,000,000
Accumulated Amortization						(5,120,000)		(5,120,000)		(743,000)	(2,526,000)	(632,000)	(778,000)	(111,000)	(1,000,000)	0	(652,000)	0	(164,000)
Net Carrying Value	194,880,000		194,880,000		124,257,000	194,880,000		194,880,000		124,257,000	57,474,000	59,368,000	19,222,000	19,889,000	29,000,000	15,000,000	59,348,000	30,000,000	29,836,000
Amortization expense	2,598,000	0	4,378,000	0		2,598,000	0	4,378,000	0
Estimated amortization expense for the year 2014	10,900,000		10,900,000
Estimated amortization expense for the year 2015	13,000,000		13,000,000
Estimated amortization expense for the year 2016	13,000,000		13,000,000
Estimated amortization expense for the year 2017	13,000,000		13,000,000
Estimated amortization expense for the year 2018	13,000,000		13,000,000
Estimated amortization expense after the year 2018	$ 136,400,000		$ 136,400,000