Retirement Benefits (Tables)

3 Months Ended

Dec. 31, 2020

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 2020 and 2019 were as follows:

	Pension Benefits
	2020		2019
Three Months Ended 31 December	U.S.	International	U.S.	International
Service cost	$5.4	$5.7	$5.8	$5.9
Interest cost	17.2	6.1	22.8	6.2
Expected return on plan assets	(48.6)	(20.2)	(47.2)	(19.5)
Prior service cost amortization	0.3	—	0.3	—
Actuarial loss amortization	19.7	4.6	21.0	4.9
Other	—	0.3	—	0.2
Net Periodic (Benefit) Cost	($6.0)	($3.5)	$2.7	($2.3)