Pension and Other Postretirement Benefit Plans - Defined Contribution Plans (Details) $ in Thousands	6 Months Ended
Mar. 29, 2019 USD ($)
Defined Benefit Plan [Abstract]
Cash contributions made during the first six months of fiscal 2019	$ 17,116
Cash contributions projected for the remainder of fiscal 2019	16,870
Total	$ 33,986

Amount of payment for pension benefits. Excludes other postretirement benefits.

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 25
-Subparagraph (g)
-URI http://asc.fasb.org/extlink&oid=98514028&loc=d3e3536-108585

Name:	us-gaap_PensionContributions
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration