Retirement Benefits (Tables)

9 Months Ended

Jun. 30, 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 and nine months ended 30 June 2020 and 2019 were as follows:

	Pension Benefits
	2020		2019
Three Months Ended 30 June	U.S.	International	U.S.	International
Service cost	$5.9	$5.7	$5.4	$4.8
Interest cost	22.9	6.0	28.2	9.0
Expected return on plan assets	(47.2)	(18.8)	(43.2)	(18.9)
Prior service cost amortization	0.3	—	0.3	—
Actuarial loss amortization	20.9	4.7	16.3	2.7
Settlements	0.3	—	0.3	—
Special termination benefits	—	—	—	—
Other	—	0.2	—	0.2
Net Periodic (Benefit) Cost	$3.1	($2.2)	$7.3	($2.2)

	Pension Benefits
	2020		2019
Nine Months Ended 30 June	U.S.	International	U.S.	International
Service cost	$17.5	$17.4	$16.1	$14.6
Interest cost	68.5	18.4	85.0	27.0
Expected return on plan assets	(141.6)	(57.7)	(129.4)	(57.0)
Prior service cost amortization	0.9	—	0.9	0.1
Actuarial loss amortization	62.9	14.5	48.9	8.3
Settlements	1.8	—	6.1	0.2
Special termination benefits	—	—	0.7	—
Other	—	0.6	—	0.6
Net Periodic (Benefit) Cost	$10.0	($6.8)	$28.3	($6.2)