|
Commitments and Contingencies - Additional Information (Detail) (USD $)
In Millions, unless otherwise specified |
1 Months Ended | 12 Months Ended | ||
|---|---|---|---|---|
|
Oct. 15, 2011
Building
sqft
|
Oct. 31, 2012
|
Oct. 31, 2011
|
Oct. 31, 2010
|
|
| Commitments and Contingencies [Line Items] | ||||
| Rent expenses | $ 62.0 | $ 58.1 | $ 49.7 | |
| Number of buildings to be leased | 2 | |||
| Total square feet of buildings | 341,000 | |||
| Lease initiation date | March 1, 2015 | |||
| Lease expiration period, (in years) | 15 years | |||
| Extended lease term, years | 19 years | |||