Retirement Benefits (Tables)

9 Months Ended

Jun. 30, 2022

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 and nine months ended 30 June 2022 and 2021 were as follows:

	Pension Benefits
	2022		2021
Three Months Ended 30 June	U.S.	International	U.S.	International
Service cost	$4.6	$5.3	$5.3	$5.9
Interest cost	18.4	7.1	17.2	6.4
Expected return on plan assets	(42.0)	(16.6)	(48.6)	(21.2)
Prior service cost amortization	0.3	—	0.3	—
Actuarial loss amortization	16.6	3.6	19.6	4.8
Settlements	3.1	—	—	0.5
Other	—	0.2	—	0.3
Net Periodic (Benefit) Cost	$1.0	($0.4)	($6.2)	($3.3)

	Pension Benefits
	2022		2021
Nine Months Ended 30 June	U.S.	International	U.S.	International
Service cost	$13.8	$16.5	$16.0	$17.5
Interest cost	55.2	22.3	51.7	18.8
Expected return on plan assets	(126.2)	(51.9)	(145.9)	(62.4)
Prior service cost amortization	0.9	—	0.9	—
Actuarial loss amortization	49.9	11.3	58.9	14.2
Settlements	4.9	0.2	—	0.5
Other	—	1.2	—	0.8
Net Periodic (Benefit) Cost	($1.5)	($0.4)	($18.4)	($10.6)