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Changes in Carrying Amounts of Goodwill by Segment (Detail) (USD $)
In Thousands, unless otherwise specified
12 Months Ended
Oct. 31, 2012
Oct. 31, 2011
Goodwill [Line Items]    
Beginning Balance $ 750,872 $ 593,983 [1]
Acquisitions 1,937 [2] 156,134 [2]
Contingent Amounts and Other (1,199) 755
Ending Balance 751,610 750,872
Janitorial
   
Goodwill [Line Items]    
Beginning Balance 469,231 468,476 [1]
Acquisitions    [2]    [2]
Contingent Amounts and Other 448 755
Ending Balance 469,679 469,231
Engineering
   
Goodwill [Line Items]    
Beginning Balance 162,535 6,401 [1]
Acquisitions 1,937 [2] 156,134 [2]
Contingent Amounts and Other (1,647)   
Ending Balance 162,825 162,535
Parking
   
Goodwill [Line Items]    
Beginning Balance 69,168 69,168 [1]
Acquisitions    [2]    [2]
Contingent Amounts and Other      
Ending Balance 69,168 69,168
Security
   
Goodwill [Line Items]    
Beginning Balance 49,938 49,938 [1]
Acquisitions    [2]    [2]
Contingent Amounts and Other      
Ending Balance $ 49,938 $ 49,938
[1] Effective November 1, 2010 the Company changed the management reporting responsibility for a subsidiary from the Janitorial segment to the Facility Solutions segment. As a result of the organizational change, the Company reclassified the goodwill associated with this subsidiary from the Janitorial segment to the Facility Solutions segment, which amounted to $2.9 million. This reclassification is reflected in all years presented.
[2] Refer to Note 4, "Acquisitions", for additional discussions regarding acquisitions the Company made in the years ended October 31, 2012 and 2011.