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Retirement Plans (Tables)

6 Months Ended

Mar. 31, 2018

Defined Benefit Plan [Abstract]

Schedule of Net Periodic Benefit Cost

The components of net periodic benefit cost for our pension plans are presented below.

	Three months ended								Six months ended
	March 31,								March 31,
	2018				2017				2018				2017
	(in millions)
Service cost	$	0.4			$	0.5			$	0.9			$	1.0
Pension costs other than service:
Interest cost	3.6				3.6				7.2				7.2
Expected return on plan assets	(4.1		)		(4.2		)		(8.3		)		(8.5		)
Amortization of actuarial net loss	0.8				1.0				1.6				2.0
	0.3				0.4				0.5				0.7
Net periodic benefit cost	$	0.7			$	0.9			$	1.4			$	1.7

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- References

No definition available.

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- Definition

Tabular disclosure of the components of net benefit costs for pension plans and/or other employee benefit plans including service cost, interest cost, expected return on plan assets, gain (loss), prior service cost or credit, transition asset or obligation, and gain (loss) recognized due to settlements or curtailments.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 715
-SubTopic 20
-Section 50
-Paragraph 1
-Subparagraph (h)
-URI http://asc.fasb.org/extlink&oid=82843861&loc=d3e1928-114920

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