Quarterly report pursuant to Section 13 or 15(d)

Available-for-sale investments - Additional Information (Detail)

v2.4.0.6
Available-for-sale investments - Additional Information (Detail) (Available for sale Securities Non Current, Chemo Centryx, Inc., USD $)
In Millions, unless otherwise specified
6 Months Ended
Dec. 31, 2011
Available for sale Securities Non Current | Chemo Centryx, Inc.
 
Schedule of Available-for-sale Securities [Line Items]  
Notes Receivable $ 10
Notes Receivable Interest Rate 5.00%
Notes Receivable, Maturity Date Sep. 30, 2021
Commitment to participate in private placement of CCX shares $ 5