CONSOLIDATED STATEMENTS OF EQUITY - USD ($) $ in Millions		Total		Common Stock [Member]	Capital in Excess of Par Value [Member]	Retained Earnings [Member]	Accumulated Other Comprehensive Loss [Member]	Noncontrolling Interests [Member]
Beginning balance at Sep. 30, 2021				265,000,000.0
Beginning balance at Sep. 30, 2021				$ 2.7	$ 11,058.8	$ 1,607.9	$ (999.1)	$ 19.7	[1]
Compensation expense under share-based plans					39.7
Issuance of common stock, net of stock received for tax withholdings				1,500,000
Issuance of common stock, net of stock received for tax withholdings					(4.5)	(2.0)
Purchases of common stock		(7,200,000)		(7,200,000)
Purchases of common stock		$ (332.1)		$ (0.1)	(300.1)	(31.9)
Net (loss) income attributable to common stockholders						222.2
Dividends declared (per share - $0.275, $0.25, $0.55 and $0.50)	[2]					(133.7)
Other					(0.4)
Other comprehensive income, net of tax		118.9	[3]				118.9
Net loss		2.3						(0.5)	[1]
Distributions and adjustments to noncontrolling interests	[1]							(0.5)
Total Stockholders' equity at Mar. 31, 2022		11,578.4
Ending balance at Mar. 31, 2022				259,300,000
Ending balance at Mar. 31, 2022		11,597.1		$ 2.6	10,793.5	1,662.5	(880.2)	18.7	[1]
Beginning balance at Dec. 31, 2021				263,200,000
Beginning balance at Dec. 31, 2021				$ 2.6	10,996.1	1,711.2	(1,012.7)	20.1	[1]
Compensation expense under share-based plans					24.5
Issuance of common stock, net of stock received for tax withholdings				1,200,000
Issuance of common stock, net of stock received for tax withholdings					(13.2)	(1.8)
Purchases of common stock				(5,100,000)
Purchases of common stock					(213.9)	(20.7)
Net (loss) income attributable to common stockholders						39.9
Dividends declared (per share - $0.275, $0.25, $0.55 and $0.50)	[2]					(66.1)
Other comprehensive income, net of tax							132.5
Net loss		0.8						(0.9)	[1]
Distributions and adjustments to noncontrolling interests	[1]							(0.5)
Total Stockholders' equity at Mar. 31, 2022		11,578.4
Ending balance at Mar. 31, 2022				259,300,000
Ending balance at Mar. 31, 2022		$ 11,597.1		$ 2.6	10,793.5	1,662.5	(880.2)	18.7	[1]
Beginning balance at Sep. 30, 2022		254,400,000		254,400,000
Beginning balance at Sep. 30, 2022		$ 11,419.7		$ 2.5	10,639.4	2,214.4	(1,454.3)	17.7	[1]
Compensation expense under share-based plans					23.1
Issuance of common stock, net of stock received for tax withholdings				1,700,000
Issuance of common stock, net of stock received for tax withholdings				$ 0.1	(13.2)
Purchases of common stock		0
Net (loss) income attributable to common stockholders						(1,960.8)
Dividends declared (per share - $0.275, $0.25, $0.55 and $0.50)	[2]					(143.6)
Other comprehensive income, net of tax		$ 335.8	[3]				335.8
Net loss		2.8
Total Stockholders' equity at Mar. 31, 2023		$ 9,643.4
Ending balance at Mar. 31, 2023		256,100,000		256,100,000
Ending balance at Mar. 31, 2023		$ 9,661.1		$ 2.6	10,649.3	110.0	(1,118.5)	17.7	[1]
Beginning balance at Dec. 31, 2022				254,600,000
Beginning balance at Dec. 31, 2022				$ 2.5	10,652.6	2,188.3	(1,308.9)	17.8	[1]
Compensation expense under share-based plans					13.5
Issuance of common stock, net of stock received for tax withholdings				1,500,000
Issuance of common stock, net of stock received for tax withholdings				$ 0.1	(16.8)
Net (loss) income attributable to common stockholders						(2,006.1)
Dividends declared (per share - $0.275, $0.25, $0.55 and $0.50)	[2]					(72.2)
Other comprehensive income, net of tax							190.4
Net loss		1.3						(0.1)	[1]
Total Stockholders' equity at Mar. 31, 2023		$ 9,643.4
Ending balance at Mar. 31, 2023		256,100,000		256,100,000
Ending balance at Mar. 31, 2023		$ 9,661.1		$ 2.6	$ 10,649.3	$ 110.0	$ (1,118.5)	$ 17.7	[1]

[1] Excludes amounts related to contingently redeemable noncontrolling interests, which are separately classified outside of permanent equity on the consolidated balance sheets.

[2] Includes cash dividends and dividend equivalent units on certain equity awards.

[3] All amounts are net of tax and noncontrolling interests.