Retirement Benefits (Tables)

3 Months Ended

Dec. 31, 2021

Retirement Benefits [Abstract]

Schedule of Net Periodic Benefit Cost

The components of net periodic (benefit) cost for our defined benefit pension plans for the three months ended 31 December 2021 and 2020 were as follows:

	Pension Benefits
	2021		2020
Three Months Ended 31 December	U.S.	International	U.S.	International
Service cost	$4.6	$5.6	$5.4	$5.7
Interest cost	18.4	7.6	17.2	6.1
Expected return on plan assets	(42.1)	(17.7)	(48.6)	(20.2)
Prior service cost amortization	0.3	—	0.3	—
Actuarial loss amortization	16.7	3.9	19.7	4.6
Settlements	0.9	—	—	—
Other	—	0.8	—	0.3
Net Periodic (Benefit) Cost	($1.2)	$0.2	($6.0)	($3.5)