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Employee Benefit Plans (Tables)

3 Months Ended

Mar. 31, 2018

Compensation And Retirement Disclosure [Abstract]

Components of Net Periodic Benefit Cost

The components of net periodic defined benefit pension cost are presented in the table below.

	Three months ended
	March 31,
	2017				2018
	(In millions)
Service cost	$	2.7			$	3.0
Interest cost		3.3				3.6
Expected return on plan assets		(2.5	)			(3.4	)
Amortization of prior service cost		.1				.1
Recognized actuarial losses		3.2				3.5
Total	$	6.8			$	6.8

The components of net periodic postretirement benefits other than pension (“OPEB”) cost are presented in the table below.  

	Three months ended
	March 31,
	2017				2018
	(In millions)
Interest cost	$	.1			$	.1
Amortization of prior service credit		(.1	)			(.2	)
Recognized actuarial losses		-				.1
Total	$	-			$	-

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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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