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Stock-Based Compensation (Tables)
 9 Months Ended
Aug. 31, 2016
Share-based Compensation [Abstract]  
Schedule of Assumptions Used [Table Text Block]
 
2016
 
2015
Risk-free interest rates
0.5 - 1.9%
 
0.1 - 2.0%
Dividend yield
1.7%
 
2.1%
Expected volatility
18.7%
 
18.8%
Expected lives (in years)
7.6
 
7.7
Stock Based Compensation in Selling, General and Administrative Expense
The following table sets forth the stock-based compensation expense recorded in selling, general and administrative (SG&A) expense (in millions):
 
Three months ended August 31,
 
Nine months ended August 31,
 
2016
 
2015
 
2016
 
2015
Stock-based compensation expense
$
4.0

 
$
3.1

 
$
19.8

 
$
17.0
Summary of Option Activity
The following is a summary of our stock option activity for the nine months ended August 31, 2016 and 2015:
 
2016
 
2015
(shares in millions)
Number
of
Shares
 
Weighted-
Average
Exercise
Price
 
Number
of
Shares
 
Weighted-
Average
Exercise
Price
Outstanding at beginning of period
4.8

 
$
59.20

 
4.8

 
$
54.17

Granted
0.7

 
99.92

 
0.8

 
76.32

Exercised
(0.6
)
 
50.95

 
(0.6
)
 
42.77

Outstanding at end of the period
4.9

 
$
66.07

 
5.0

 
$
58.96

Exercisable at end of the period
3.4

 
$
56.97

 
3.3

 
$
51.95
Schedule of Share-based Compensation, Restricted Stock Units Award Activity [Table Text Block]
The following is a summary of our RSU activity for the nine months ended August 31, 2016 and 2015:
 
2016
 
2015
(shares in thousands)
Number
of
Shares
 
Weighted-
Average
Grant-Date
Fair Value
 
Number
of
Shares
 
Weighted-
Average
Grant-Date
Fair Value
Outstanding at beginning of period
270

 
$
71.03

 
239

 
$
67.60

Granted
104

 
96.59

 
135

 
76.06

Vested
(94
)
 
72.21

 
(84
)
 
71.30

Forfeited
(10
)
 
80.47

 
(12
)
 
73.03

Outstanding at end of period
270

 
$
80.17

 
278

 
$
70.35
Schedule of Share Based Compensation, Performance Shares, Activity [Table Text Block]
The following is a summary of our LTPP activity for the nine months ended August 31, 2016 and 2015:
 
2016
 
2015
(shares in thousands)
Number
of
Shares
 
Weighted-
Average
Grant-Date
Fair Value
 
Number
of
Shares
 
Weighted-
Average
Grant-Date
Fair Value
Outstanding at beginning of period
192

 
$
70.94

 
231

 
$
61.94

Granted
108

 
86.40

 
96

 
74.02

Vested
(18
)
 
64.74

 
(65
)
 
48.78

Forfeited
(8
)
 
79.45

 
(14
)
 
70.92

Outstanding at end of period
274

 
$
77.22

 
248

 
$
69.55