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Stock-Based Compensation (Tables)
 9 Months Ended
Aug. 31, 2020
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]  
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,
 2020201920202019
Stock-based compensation expense$10.7 $7.8 $37.8 $30.6 
Summary of Option Activity
The following is a summary of our stock option activity for the nine months ended August 31, 2020 and 2019:
 20202019
(shares in millions)Number
of
Shares		Weighted-
Average
Exercise
Price		Number
of
Shares		Weighted-
Average
Exercise
Price
Outstanding at beginning of period2.6 $96.18 3.6 $82.60 
Granted0.4 138.62 0.3 147.39 
Exercised(0.7)81.88 (1.2)70.78 
Outstanding at end of the period2.3 $106.88 2.7 $95.50 
Exercisable at end of the period1.6 $95.33 2.0 $86.08 
Schedule of Share-based Payment Award, Stock Options, Valuation Assumptions [Table Text Block]
20202019
Risk-free interest rates0.0 - 0.6%2.2 - 2.5%
Dividend yield1.8%1.5%
Expected volatility22.8%17.4%
Expected lives (in years)7.97.5
Schedule of Share-based Compensation, Restricted Stock Units Award Activity
The following is a summary of our RSU activity for the nine months ended August 31, 2020 and 2019:

 20202019
(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 period381 $115.89 423 $103.05 
Granted148 134.06 129 143.15 
Vested(137)109.97 (134)96.74 
Forfeited(7)124.30 (9)112.10 
Outstanding at end of period385 $124.82 409 $117.51 
Schedule of Share Based Compensation, Performance Shares, Activity
The following is a summary of our LTPP activity for the nine months ended August 31, 2020 and 2019:
 20202019
(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 period196 $115.96 218 $83.55 
Granted65 172.28 102 150.51 
Vested(44)89.96 (57)86.40 
Forfeited(3)127.46 — — 
Outstanding at end of period214 $138.26 263 $117.14