Note 5 - Licences, Royalty Collaborative and Contractual Arrangements (Details) - Components of Revenues from Royalties, Collaborative and Contractual Agreements (USD $) In Millions, unless otherwise specified	3 Months Ended		6 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2013	Dec. 31, 2012
Segment Reporting Information [Line Items]
Royalty Revenue	$ 6.0	$ 1.9	$ 6.0	$ 1.9
Revenue from services	12.4	8.1	24.6	9.4
Other	0.1	0.4	0.2	0.5
Total revenue	18.5	10.4	30.8	11.8
Relenza [Member]
Segment Reporting Information [Line Items]
Royalty Revenue	5.4	1.0	5.4	1.0
Inavir [Member]
Segment Reporting Information [Line Items]
Royalty Revenue	$ 0.6	$ 0.9	$ 0.6	$ 0.9