Segment and Related Information, Reconciliation of Operating Income Before Income Taxes (Details) - USD ($) $ in Millions	3 Months Ended	9 Months Ended
Sep. 30, 2018	Oct. 01, 2017	Sep. 30, 2018	Oct. 01, 2017
Income from operations before provision (benefit) for taxes on income [Abstract]
Acquisition-related transaction and integration costs	$ (0.3)	$ (0.5)	$ (1.7)	$ (2.8)
Unallocated corporate expenses	(0.9)	(1.7)	(4.4)	(2.8)
Consolidated income from operations	68.2	67.2	193.6	198.3
Non-operating deductions, net	(16.2)	(12.6)	(38.0)	(41.1)
Income before provision for taxes and equity in earnings	52.0	54.6	155.6	157.2
Reportable Segments [Member]
Income from operations before provision (benefit) for taxes on income [Abstract]
Consolidated income from operations	$ 69.4	$ 69.4	$ 199.7	$ 203.9

Amount of corporate headquarter items not allocated to segments.

No definition available.

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- Definition

This element represents acquisition-related costs incurred to effect a business combination which costs have been expensed during the period. Such costs include finder's fees; advisory, legal, accounting, valuation, and other professional or consulting fees; general administrative costs, including the costs of maintaining an internal acquisitions department; and may include costs of registering and issuing debt and equity securities.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 805
-SubTopic 10
-Section 25
-Paragraph 23
-URI http://asc.fasb.org/extlink&oid=84229725&loc=d3e1043-128460

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- Definition

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.

+ References

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

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=115205541&loc=SL114868664-224227

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- Definition

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

+ References

No definition available.

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- References

No definition available.

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