Retirement Benefits (Tables)

9 Months Ended

Jun. 30, 2023

The components of net periodic cost (benefit) for our defined benefit pension plans for the three and nine months ended 30 June 2023 and 2022 were as follows:


	Pension Benefits
	2023			2022
Three Months Ended 30 June	U.S.	International	Total	U.S.	International	Total
Service cost	$2.7	$3.0	$5.7	$4.6	$5.3	$9.9
Non-service cost (benefit):
Interest cost	32.5	15.2	47.7	18.4	7.1	25.5
Expected return on plan assets	(31.7)	(12.6)	(44.3)	(42.0)	(16.6)	(58.6)
Prior service cost amortization	0.3	—	0.3	0.3	—	0.3
Actuarial loss amortization	14.9	3.1	18.0	16.6	3.6	20.2

Settlements	—	0.3	0.3	3.1	—	3.1


Other	—	0.2	0.2	—	0.2	0.2
Net Periodic Cost (Benefit)	$18.7	$9.2	$27.9	$1.0	($0.4)	$0.6



	Pension Benefits
	2023			2022
Nine Months Ended 30 June	U.S.	International	Total	U.S.	International	Total
Service cost	$8.2	$9.3	$17.5	$13.8	$16.5	$30.3
Non-service cost (benefit):
Interest cost	97.5	44.5	142.0	55.2	22.3	77.5
Expected return on plan assets	(95.3)	(36.6)	(131.9)	(126.2)	(51.9)	(178.1)
Prior service cost amortization	0.9	0.1	1.0	0.9	—	0.9
Actuarial loss amortization	44.7	9.1	53.8	49.9	11.3	61.2

Settlements	0.9	0.5	1.4	4.9	0.2	5.1
Curtailments	—	(1.9)	(1.9)	—	—	—

Other	—	0.7	0.7	—	1.2	1.2
Net Periodic Cost (Benefit)	$56.9	$25.7	$82.6	($1.5)	($0.4)	($1.9)