Amount of contributions received and expected to be received by defined benefit plan from employer in current fiscal year.

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 715
-SubTopic 20
-Section 50
-Paragraph 6
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=108410482&loc=d3e2709-114920

Name:	us-gaap_DefinedBenefitPlanExpectedFutureEmployerContributionsCurrentFiscalYear
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

Pension Plans Narrative (Details) - USD ($) $ in Millions	3 Months Ended	9 Months Ended
Pension Plans Narrative (Details) - USD ($) $ in Millions	Sep. 29, 2017	Sep. 29, 2017	Sep. 28, 2018
Accounting Standards Update 2017-07
Defined Benefit Plan Disclosure [Line Items]
Reclassification of prior year pension cost, operating income increase	$ 0.8	$ 2.3
Foreign Plan
Defined Benefit Plan Disclosure [Line Items]
Expected contributions			$ 10.0