Benefit Plans, Amounts Recognized in Consolidated Balance Sheet (Details) - USD ($) $ in Millions	Dec. 31, 2019	Dec. 31, 2018
Amounts recognized in Balance Sheet [Abstract]
Current liability	$ (50.7)	$ (48.1)
Non-current liability	(148.9)	(124.2)
Pension Benefits [Member]
Amounts recognized in Balance Sheet [Abstract]
Current liability	(1.1)	(0.8)
Non-current liability	(143.3)	(118.8)
Recognized liability	(144.4)	(119.6)
Post-Retirement Benefits [Member]
Amounts recognized in Balance Sheet [Abstract]
Current liability	(0.4)	(0.3)
Non-current liability	(5.5)	(5.4)
Recognized liability	$ (5.9)	$ (5.7)

Amount of liability, recognized in statement of financial position, for defined benefit pension and other postretirement plans, classified as noncurrent.

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 (c)
-URI http://asc.fasb.org/extlink&oid=118255775&loc=d3e1928-114920

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
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-Name Accounting Standards Codification
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Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 715
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Reference 4: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
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-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

Name:	us-gaap_PensionAndOtherPostretirementDefinedBenefitPlansLiabilitiesNoncurrent
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant