CONDENSED CONSOLIDATED STATEMENTS OF SHAREHOLDERS' EQUITY - USD ($) $ in Millions	Total	Common Stock	Additional Paid-In Capital	Retained Earnings	Accumulated Other Comprehensive Income (Loss)	Common Stock in Treasury at Cost
Balance at Sep. 30, 2020	$ 2,850.7	$ 0.7	$ 800.9	$ 2,747.7	$ (198.4)	$ (500.2)
Net income	69.5			69.5
Employee pension and postretirement benefits, net of tax	1.2				1.2
Currency translation adjustments	31.8				31.8
Cash dividends	(22.5)			(22.5)
Exercise of stock options	4.6		(0.9)			5.5
Stock-based compensation expense	6.6		6.6
Payment of stock-based restricted and performance shares			(15.2)			15.2
Shares tendered for taxes on stock-based compensation	(8.0)					(8.0)
Other	(1.3)			(1.2)	(0.1)
Balance at Dec. 31, 2020	2,932.6	0.7	791.4	2,793.5	(165.5)	(487.5)
Balance at Sep. 30, 2021	3,247.8	0.7	804.6	3,129.3	(131.0)	(555.8)
Net income	6.2			6.2
Employee pension and postretirement benefits, net of tax	8.6				8.6
Currency translation adjustments	(6.9)				(6.9)
Cash dividends	(24.9)			(24.9)
Repurchases of Common Stock	(150.0)					(150.0)
Exercise of stock options	2.7		0.1			2.6
Stock-based compensation expense	4.2		4.2
Payment of stock-based restricted and performance shares			(16.5)			16.5
Shares tendered for taxes on stock-based compensation	(12.0)					(12.0)
Other	0.7				0.7
Balance at Dec. 31, 2021	$ 3,076.4	$ 0.7	$ 792.4	$ 3,110.6	$ (128.6)	$ (698.7)