Intangible Assets (Details) (USD $)	3 Months Ended		9 Months Ended				3 Months Ended		9 Months Ended			9 Months Ended	12 Months Ended	9 Months Ended	12 Months Ended	9 Months Ended	12 Months Ended	9 Months Ended	12 Months Ended	9 Months Ended
	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014	Sep. 30, 2013	Dec. 31, 2013		Sep. 30, 2014 GSK	Sep. 30, 2013 GSK	Sep. 30, 2014 GSK	Sep. 30, 2013 GSK	Dec. 31, 2013 GSK	Sep. 30, 2014 GSK BREO ELLIPTA	Dec. 31, 2013 GSK BREO ELLIPTA	Sep. 30, 2014 GSK RELVAR ELLIPTA Japan	Dec. 31, 2013 GSK RELVAR ELLIPTA Japan	Sep. 30, 2014 GSK RELVAR ELLIPTA Europe	Dec. 31, 2013 GSK RELVAR ELLIPTA Europe	Sep. 30, 2014 GSK ANORO ELLIPTA	Dec. 31, 2013 GSK ANORO ELLIPTA	Sep. 30, 2014 GSK ANORO ELLIPTA Europe	Sep. 30, 2014 GSK ANORO ELLIPTA Japanese Minister Of Health Labour And Welfare [Member]
Intangible assets
Weighted Average Remaining Amortization Period												16 years	15 years 8 months 12 days	14 years 2 months 12 days	14 years 10 months 24 days	14 years 3 months 18 days	15 years	16 years	15 years 2 months 12 days	14 years 10 months 24 days	15 years
Gross Carrying Value							$ 220,000,000		$ 220,000,000		$ 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	$ 20,000,000
Accumulated Amortization							(8,354,000)		(8,354,000)		(743,000)	(3,411,000)	(632,000)	(1,111,000)	(111,000)	(1,500,000)	0	(1,565,000)	0	(656,000)	(111,000)
Net Carrying Value	211,646,000		211,646,000		124,257,000	[1]	211,646,000		211,646,000		124,257,000	56,589,000	59,368,000	18,889,000	19,889,000	28,500,000	15,000,000	58,435,000	30,000,000	29,344,000	19,889,000
Amortization expense	3,233,000	0	7,611,000	0			3,233,000	0	7,611,000	0
Estimated amortization expense for the year 2014	3,500,000		3,500,000
Estimated amortization expense for the year 2015	13,800,000		13,800,000
Estimated amortization expense for the year 2016	13,800,000		13,800,000
Estimated amortization expense for the year 2017	13,800,000		13,800,000
Estimated amortization expense for the year 2018	13,800,000		13,800,000
Estimated amortization expense after the year 2018	$ 152,900,000		$ 152,900,000

[1] Condensed consolidated balance sheet at December 31, 2013 has been derived from audited consolidated financial statements.