Background and Basis of Presentation (Details) - USD ($) $ / shares in Units, $ in Millions	12 Months Ended
Sep. 25, 2015	Dec. 29, 2017	Dec. 30, 2016	Sep. 30, 2016
Schedule of Basis of Presentation [Line Items]
Stock outstanding after distribution (in shares)		86,336,232	104,667,545	107,167,693
Ordinary shares, par value (in usd per share)		$ 0.20	$ 0.20	$ 0.20
Operating Expense [Member]
Schedule of Basis of Presentation [Line Items]
Prior Period Reclassification Adjustment	$ 56.4

Number of shares of common stock outstanding. Common stock represent the ownership interest in a corporation.

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02(29))
-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 505
-SubTopic 10
-Section 50
-Paragraph 2
-URI http://asc.fasb.org/extlink&oid=84159872&loc=d3e21463-112644

Name:	us-gaap_CommonStockSharesOutstanding
Namespace Prefix:	us-gaap_
Data Type:	xbrli:sharesItemType
Balance Type:	na
Period Type:	instant