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Insurance (Tables)
 9 Months Ended
Jul. 31, 2015
Insurance [Abstract]  
Insurance Disclosure Table
Instruments Used to Collateralize Our Insurance Obligations
(in millions)
July 31, 2015
 
October 31, 2014
Standby letters of credit
$
108.6

 
$
111.1

Surety bonds
52.9

 
52.5

Restricted insurance deposits
11.4

 
11.5

Total
$
172.9

 
$
175.1