Supplemental Balance Sheet Information Other Long-Term Liabilities (Details) - USD ($) $ in Millions	Apr. 01, 2018	Oct. 01, 2017
Balance Sheet Related Disclosures [Abstract]
Deferred Income Taxes and Other Tax Liabilities, Noncurrent	$ 343.3	$ 6.3
Other long-term liabilities	$ 1,120.4	$ 749.0

Amount of liabilities classified as other, due after one year or the normal operating cycle, if longer.

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 210.5-02.24)
-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

Name:	us-gaap_OtherLiabilitiesNoncurrent
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant