Note 14 - Licenses, Royalty Collaborative and Contractual Arrangements (Details) - Components of Revenues from Royalties, Collaborative and Contractual Agreements (USD $) In Millions, unless otherwise specified	3 Months Ended								12 Months Ended
	Jun. 30, 2014	Mar. 31, 2014	Dec. 31, 2013	Sep. 30, 2013	Jun. 30, 2013	Mar. 31, 2013	Dec. 31, 2012	Sep. 30, 2012	Jun. 30, 2014	Jun. 30, 2013	Jun. 30, 2012
Segment Reporting Information [Line Items]
Royalty revenue									$ 15.1	$ 9.6	$ 8.8
Commercial milestone – Inavir®										2.8
Revenue from services									53.6	24.0	11.5
Total revenue	8.5	29.5	18.5	12.3	9.3	12.5	10.4	1.4	68.7	33.6	20.4
Relenza [Member]
Segment Reporting Information [Line Items]
Royalty revenue									10.6	2.6	4.4
Inavir [Member]
Segment Reporting Information [Line Items]
Royalty revenue									$ 4.5	$ 4.2	$ 4.5