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Employee Benefit Plans (Tables)

3 Months Ended

Dec. 31, 2019

Components of net periodic pension benefit cost were as follows (in millions):

	Three Months Ended December 31,
	2019			2018
Components of net periodic benefit cost
Service cost	$	2.5		$	2.4
Interest cost		4.3			4.7
Expected return on plan assets		(5.1	)		(5.0	)
Amortization of prior service cost (benefit)		0.4			0.4
Amortization of net actuarial loss (gain)		0.8			—
Expenses paid		1.0			0.6
Net periodic benefit cost	$	3.9		$	3.1

Components of net periodic other post-employment benefit cost were as follows (in millions):

	Three Months Ended December 31,
	2019			2018
Components of net periodic benefit cost
Service cost	$	0.9		$	0.8
Interest cost		0.4			0.5
Amortization of prior service cost (benefit)		(0.2	)		(0.4	)
Amortization of net actuarial loss (gain)		(0.1	)		(0.1	)
Net periodic benefit cost	$	1.0		$	0.8