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Commitments and Contingencies (Tables)
12 Months Ended
Jan. 31, 2017
Commitments and Contingencies Disclosure [Abstract]  
Aggregate Future Minimum Lease Payments
At January 31, 2017, the aggregate future minimum lease payments required were as follows:

 
 
2018
$
60.7

2019
48.4

2020
31.4

2021
21.1

2022
12.2

Thereafter
41.2

 
215.0

Less: Sublease income
2.5

 
$
212.5

Rent Expense Related to Operating Leases
Rent expense related to these operating leases recognized on a straight-line basis over the lease period, was as follows:
 
Fiscal Year Ended January 31,
 
2017
 
2016
 
2015
Rent expense
$
65.3

 
$
58.7

 
$
55.0