Net Income Per Common Share (Tables)
 6 Months Ended
Apr. 30, 2018
Earnings Per Share [Abstract]  
Schedule of Basic and Diluted Net Income Per Common Share Calculations
Basic and Diluted Net Income Per Common Share Calculations
 
Three Months Ended April 30,
 
Six Months Ended April 30,
(in millions, except per share amounts)
2018
 
2017
 
2018

2017
Income from continuing operations
$
25.4

 
$
31.6

 
$
53.3

 
$
47.7

Income (loss) from discontinued operations, net of taxes
1.2

 
(0.4
)
 
1.1

 
(73.2
)
Net income (loss)
$
26.6

 
$
31.3

 
$
54.4

 
$
(25.5
)
 
 
 
 
 
 
 
 
Weighted-average common and common equivalent shares outstanding — Basic
66.0

 
56.0

 
66.0

 
56.0

Effect of dilutive securities
 
 
 
 
 
 
 
Restricted stock units
0.1

 
0.3

 
0.1

 
0.3

Stock options
0.1

 
0.2

 
0.1

 
0.2

Performance shares
—

 
—

 
—

 
0.1

Weighted-average common and common equivalent shares outstanding — Diluted
66.2

 
56.5

 
66.3

 
56.6

 
 
 
 
 
 
 
 
Net income (loss) per common share — Basic
 
 
 
 
 
 
 
Income from continuing operations
$
0.38

 
$
0.56

 
$
0.81

 
$
0.85

Income (loss) from discontinued operations
0.02

 
(0.01
)
 
0.02

 
(1.31
)
Net income (loss)
$
0.40

 
$
0.56

 
$
0.83

 
$
(0.46
)
 
 
 
 
 
 
 
 
Net income (loss) per common share — Diluted
 
 
 
 
 
 
 
Income from continuing operations
$
0.38

 
$
0.56

 
$
0.80

 
$
0.84

Income (loss) from discontinued operations
0.02

 
(0.01
)
 
0.02

 
(1.29
)
Net income (loss)
$
0.40

 
$
0.55

 
$
0.82

 
$
(0.45
)
Schedule of Anti-Dilutive Outstanding Stock Awards Issued Under Share-Based Compensation Plans
Anti-Dilutive Outstanding Stock Awards Issued Under Share-Based Compensation Plans
 
Three Months Ended April 30,
 
Six Months Ended April 30,
(in millions)
2018
 
2017
 
2018
 
2017
Anti-dilutive
0.5

 
—

 
0.3

 
—