Share-Based Compensation (Tables)

12 Months Ended

Sep. 30, 2024

Share-Based Payment Arrangement [Abstract]

Schedule of Recognized Share-Based Compensation Cost

Share-based compensation cost recognized on the consolidated income statements is summarized below:

	2024	2023	2022
Before-tax share-based compensation cost	$61.7	$60.7	$49.5
Income tax benefit	(14.9)	(14.6)	(12.1)
After-tax share-based compensation cost	$46.8	$46.1	$37.4

Schedule of Assumptions for Fair Value of Market-Based Deferred Stock Units

The calculation of the fair value of market-based deferred stock units used the following assumptions:

	2024		2023		2022
Expected volatility	25.0	%	32.5	%	30.5	%
Risk-free interest rate	4.3	%	4.0	%	0.8	%
Expected dividend yield	2.6	%	2.4	%	2.1	%

Schedule of Deferred Stock Units and Restricted Stock Activity

A summary of deferred stock unit activity in fiscal year 2024 is presented below:

	Shares (000)	Weighted Average Grant-Date Fair Value
Deferred stock units outstanding at 30 September 2023	700	$282.60
Granted	249	283.67
Paid out	(100)	226.55
Forfeited	(91)	252.23
Adjusted	—	—
Deferred stock units outstanding at 30 September 2024	758	$293.99

Schedule of Stock Option Activity

A summary of stock option activity in fiscal year 2024 is presented below:

	Shares (000)	Weighted Average Exercise Price
Stock options outstanding and exercisable at 30 September 2023	294	$120.42
Exercised	(240)	117.30
Stock options outstanding and exercisable at 30 September 2024	54	$134.54