Subsequent Events (Details) - Revolving Credit Facility [Member] - threehundredsixtyfourdaycreditfacility [Member] $ in Billions	12 Months Ended
Sep. 29, 2019 USD ($)
Subsequent Event [Line Items]
Unsecured revolving credit facility	$ 1.0
Maturity date of credit facility	Oct. 21, 2020

Maximum borrowing capacity under the credit facility without consideration of any current restrictions on the amount that could be borrowed or the amounts currently outstanding under the facility.

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02.19(b),22(b))
-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

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