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Stock-Based Compensation (Tables)
 12 Months Ended
Oct. 31, 2023
Share-Based Payment Arrangement [Abstract]  
Schedule of Compensation Costs Related to Stock-Based Awards
Compensation costs related to stock-based compensation awards were as follows (dollars in millions):
Fiscal Years Ended October 31202320222021
Stock option awards$8.5 $10.0 $10.0 
Performance share awards2.9 5.8 6.8 
Restricted stock unit awards6.9 5.7 4.3 
Unrestricted common stock awards1.1 0.6 0.7 
Total compensation cost for stock-based compensation awards$19.4 $22.1 $21.8 
Related tax benefit from stock-based compensation awards$4.7 $5.3 $5.2 
Schedule of Weighted Average Valuation Assumptions of Stock-Based Compensation
The table below illustrates the weighted-average valuation assumptions used under the Black-Scholes valuation method for options granted in the following fiscal periods:
Fiscal Years Ended October 31202320222021
Expected life of option in years6.316.196.21
Expected stock price volatility25.20 %23.74 %23.26 %
Risk-free interest rate3.79 %1.31 %0.55 %
Expected dividend yield0.95 %0.94 %0.86 %
Per share weighted-average fair value at date of grant$33.21 $22.55 $19.39 
Schedule of Stock Options Activity
The table below presents stock option activity for fiscal 2023:
 Stock Option AwardsWeighted-Average Exercise PriceWeighted-Average
Contractual Life (years)		Aggregate Intrinsic
Value (dollars in millions)
Outstanding as of October 31, 20222,986,033 $71.23 6.0$102.1 
Granted475,620 110.87   
Exercised(389,923)52.76 
Forfeited(98,300)107.67   
Outstanding as of October 31, 20232,973,430 $78.80 5.4$32.0 
Exercisable as of October 31, 20232,078,025 $68.37 4.4$32.0 
Schedule of Total Market Value and the Intrinsic Value of Options Exercised
The table below presents the total market value of stock options exercised and the total intrinsic value of options exercised during the following fiscal years (dollars in millions):
Fiscal Years Ended October 31202320222021
Market value of stock options exercised$43.4 $20.1 $40.1 
Intrinsic value of stock options exercised1
$22.8 $9.8 $26.0 
1    Intrinsic value is calculated as the amount by which the stock price at exercise date exceeded the option exercise price.
Schedule of Performance Share Awards Granted
Factors related to the company's performance share awards are as follows (dollars in millions, except per award data):
Fiscal Years Ended October 31202320222021
Weighted-average fair value per award at date of grant$112.14 $98.41 $90.59 
Fair value of performance share awards vested$5.3 $4.8 $3.4 
Schedule of Unvested Performance Share Awards and the Weighted Average Fair Value at the Date of Grant
The table below presents fiscal 2023 activity for unvested performance share awards:
 Performance SharesWeighted-Average Fair Value at Date of Grant
Unvested as of October 31, 2022195,600 $88.63 
Granted66,131 112.14 
Vested(46,831)77.33 
Forfeited(28,140)106.16 
Unvested as of October 31, 2023186,760 $100.57 
Schedule of Restricted Stock and Restricted Stock Unit Awards Granted
Factors related to the company's restricted stock unit awards are as follows (dollars in millions, except per award data):
Fiscal Years Ended October 31202320222021
Weighted-average fair value per award at date of grant$103.40 $88.90 $97.87 
Fair value of restricted stock units vested$6.2 $5.5 $4.5 
Schedule of Unvested Restricted Stock Shares and the Weighted Average Fair Value at the Date of Grant
The table below presents fiscal 2023 activity for unvested restricted stock units:
 Restricted Stock UnitsWeighted-Average Fair Value at Date
of Grant
Unvested as of October 31, 2022150,677 $90.39 
Granted99,081 103.40 
Vested(57,727)89.16 
Forfeited(12,205)93.26 
Unvested as of October 31, 2023179,826 $97.66