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Component: (Network and Table)
Network
2418405 - Disclosure - Share-Based Compensation Plans - RSU Activity (Details)
(http://www.abm.com/role/ShareBasedCompensationPlansRsuActivityDetails)
TableSchedule of Share-based Compensation Arrangements by Share-based Payment Award [Table]
Slicers (applies to each fact value in each table cell)
Reporting Entity [Axis]0000771497 (http://www.sec.gov/CIK)
Award Type [Axis]RSUs
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]Period [Axis]
2015-11-01 - 2016-10-31
2014-11-01 - 2015-10-31
2013-11-01 - 2014-10-31
Number of Shares
 
 
 
Beginning balance (in shares)
1,300,000  
  
Granted (in shares)
300,000  
  
Vested (in shares)
(300,000) 
  
Forfeited (in shares)
(200,000) 
  
Ending balance (in shares)
1,000,000  
 
1,300,000  
 
 
 
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Weighted Average Grant Date Fair Value [Abstract]
 
 
 
Beginning balance (usd per share)
25.79  
  
Granted (usd per share)
35.62  
29.31  
27.82  
Vested (usd per share)
23.70  
  
Forfeited (usd per share)
26.39  
  
Ending balance (usd per share)
28.83  
25.79  
 
Shares Paid for Tax Withholding for Share Based Compensation
100,000