Other Income (Expense) (Tables)

12 Months Ended

Sep. 30, 2021

Other Income and Expenses [Abstract]

Components of Other Income (Expense)

The components of other income (expense) are (in millions):

	2021		2020		2019
Interest income	$	1.6	$	5.5	$	11.1
Royalty income	10.2		8.9		10.2
Legacy product liability and environmental charges	(10.6)		(14.5)		(22.1)
Non-operating pension and postretirement benefit (cost) credit	(63.8)		(37.4)		8.4
Legal Settlement (Note 17)	70.0		—		—
Other	(1.7)		7.8		(1.5)
Other income (expense)	$	5.7	$	(29.7)	$	6.1