Amount of expense for award under share-based payment arrangement. Excludes amount capitalized.

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Net number of share options (or share units) granted during the period.

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Share-Based Compensation (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Millions	3 Months Ended		9 Months Ended
	Jun. 30, 2020	Jun. 30, 2019	Jun. 30, 2020	Jun. 30, 2019
Share-Based Compensation (Textual) [Abstract]
Pre-tax share-based compensation expense	$ 12.3	$ 10.7	$ 34.7	$ 32.5
Stock options
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Grants (in shares)			973	961
Wtd. Avg. Share Fair Value (usd per share)			$ 35.79	$ 32.48
Performance shares
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Grants (in shares)			37	57
Wtd. Avg. Share Fair Value (usd per share)			$ 265.04	$ 155.04
Restricted stock and restricted stock units
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Grants (in shares)			67	46
Wtd. Avg. Share Fair Value (usd per share)			$ 198.77	$ 170.79
Unrestricted stock
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Grants (in shares)			7	6
Wtd. Avg. Share Fair Value (usd per share)			$ 171.51	$ 182.88