Quarterly report pursuant to Section 13 or 15(d)

Royalty and licensing income (Detail)

v2.4.0.6
Royalty and licensing income (Detail) (USD $)
In Millions, unless otherwise specified
6 Months Ended 3 Months Ended
Jan. 31, 2013
Jan. 31, 2012
Jan. 31, 2013
Life Sciences [Member]
Jan. 31, 2012
Life Sciences [Member]
Royalty Revenue $ 3.0 $ 3.2 $ 1.0 $ 1.3