Segment and Related Information, Reconciliation of Operating Income Before Income Taxes (Details) - USD ($) $ in Millions	3 Months Ended
Mar. 29, 2020	Mar. 31, 2019
Income from Operations before Provision (Benefit) for Taxes on Income [Abstract]
Litigation expenses	$ (0.6)	$ 0.0
Consolidated income from operations	57.7	62.0
Non-operating deductions, net	(8.7)	(12.8)
Income from operations before tax and equity in earnings	49.0	49.2
Reportable Segments [Member]
Income from Operations before Provision (Benefit) for Taxes on Income [Abstract]
Consolidated income from operations	58.8	62.8
Unallocated Corporate Expenses [Member]
Income from Operations before Provision (Benefit) for Taxes on Income [Abstract]
Consolidated income from operations	$ (1.1)	$ (0.8)

Amount of income (loss) from continuing operations before deduction of income tax expense (benefit) and income (loss) attributable to noncontrolling interest, and addition of income (loss) from equity method investments.

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 235
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.4-08.(h)(1)(i))
-URI http://asc.fasb.org/extlink&oid=26873400&loc=d3e23780-122690

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- Definition

Amount of litigation expense, including but not limited to legal, forensic, accounting, and investigative fees.

+ References

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- Definition

The aggregate amount of income or expense from ancillary business-related activities (that is to say, excluding major activities considered part of the normal operations of the business).

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 220
-SubTopic 10
-Section S99
-Paragraph 2
-Subparagraph (SX 210.5-03.7)
-URI http://asc.fasb.org/extlink&oid=116634182&loc=SL114868664-224227

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The net result for the period of deducting operating expenses from operating revenues.

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