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Insurance (Tables)
 12 Months Ended
Oct. 31, 2015
Insurance [Abstract]  
Standby Letters of Credit, Surety Bonds and Restricted Insurance Deposits Outstanding to Collateralize Self-Insurance Obligations
Instruments Used to Collateralize Our Insurance Obligations
 
October 31,
(in millions)
2015
 
2014
Standby letters of credit
$
105.4

 
$
111.1

Surety bonds
55.9

 
52.5

Restricted insurance deposits
11.4

 
11.5

Total
$
172.7

 
$
175.1