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Commitments And Contingencies (Narrative) (Details) (USD $)
In Millions, unless otherwise specified |
12 Months Ended | |||
|---|---|---|---|---|
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Oct. 31, 2011
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Oct. 31, 2010
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Oct. 31, 2009
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Oct. 15, 2011
sqft
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| Commitments And Contingencies [Abstract] | ||||
| Rent expenses | $ 58.1 | $ 49.7 | $ 45.2 | |
| Number of buildings to be leased | 2 | |||
| Total square feet of buildings | 341,000 | |||
| Total square feet of buildings after enlargement | 440,000 | |||
| Lease initiation date | March 1, 2015 | |||
| Lease expiration period, (in years) | 15 | |||
| Extended lease term, years | 19 | |||