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Accumulated Other Comprehensive Loss (Tables)
 12 Months Ended
Jan. 31, 2017
Accumulated Other Comprehensive Income (loss) [Abstract]  
Schedule of Accumulated Other Comprehensive (Loss) Income
Accumulated other comprehensive loss, net of taxes, consisted of the following:
 
Net Unrealized Gains (Losses) on Derivative Instruments
 
Net Unrealized Gains (Losses) on Available for Sale Securities
 
Defined Benefit Pension Components
 
Foreign Currency Translation Adjustments
 
Total
Balances, January 31, 2015
$
42.8

 
$
1.6

 
$
(23.7
)
 
$
(74.0
)
 
$
(53.3
)
Other comprehensive income (loss) before reclassifications
1.6

 
(1.3
)
 
(6.8
)
 
(35.2
)
 
(41.7
)
Pre-tax (gains) losses reclassified from accumulated other comprehensive income
(29.3
)
 
(0.1
)
 
1.3

 
—

 
(28.1
)
Tax effects
0.6

 
—

 
0.9

 
0.5

 
2.0

Net current period other comprehensive (loss) income
(27.1
)
 
(1.4
)
 
(4.6
)
 
(34.7
)
 
(67.8
)
Balances, January 31, 2016
15.7

 
0.2

 
(28.3
)
 
(108.7
)
 
(121.1
)
Other comprehensive income (loss) before reclassifications
7.4

 
3.3

 
(5.8
)
 
(52.3
)
 
(47.4
)
Pre-tax (gains) losses reclassified from accumulated other comprehensive income
(7.4
)
 
(1.5
)
 
1.2

 
—

 
(7.7
)
Tax effects
(1.1
)
 
(0.5
)
 
(0.9
)
 
0.2

 
(2.3
)
Net current period other comprehensive (loss) income
(1.1
)
 
1.3

 
(5.5
)
 
(52.1
)
 
(57.4
)
Balances, January 31, 2017
$
14.6

 
$
1.5

 
$
(33.8
)
 
$
(160.8
)
 
$
(178.5
)