Commitments and Contingencies (Details) $ in Millions	12 Months Ended
Jan. 01, 2019 USD ($)
Commitments and Contingencies Disclosure [Abstract]
Loss contingency accrual	$ 11.0
Increase to accrual for final assessment	$ 3.4

Amount of increase (decrease) in loss contingency liability.

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 450
-SubTopic 20
-Section 50
-Paragraph 1
-URI http://asc.fasb.org/extlink&oid=121557415&loc=d3e14326-108349

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	na
Period Type:	duration