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Employee Benefit Plans and Other Postretirement Benefits (Tables)

6 Months Ended

Jun. 30, 2021

Compensation And Retirement Disclosure [Abstract]

Components of Net Periodic Benefit Costs

The components of net periodic benefit cost for our pension plans were as follows (dollars in millions):

		Pension Plans
		Three Months Ended June 30,								Six Months Ended June 30,
		2021				2020				2021				2020
Service cost		$	5.4			$	5.9			$	10.7			$	11.9
Interest cost			7.4				10.0				14.9				19.9
Expected return on plan assets			(15.8	)			(14.2	)			(31.6	)			(28.4	)
Net amortization of unrecognized amounts
Prior service cost			1.0				1.1				1.9				2.2
Actuarial loss			2.5				2.7				5.0				5.3
Net periodic benefit cost		$	0.5			$	5.5			$	0.9			$	10.9

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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://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 715
-SubTopic 20
-Section 50
-Paragraph 1
-Subparagraph (h)
-URI http://asc.fasb.org/extlink&oid=118255775&loc=d3e1928-114920

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