Summary of Significant Accounting Policies Subsequent Event (Details) - USD ($) shares in Millions		9 Months Ended
Jul. 01, 2020	Sep. 26, 2020
Subsequent Event [Line Items]
Equity securities received, restricted	0.2
Gain (Loss) on Sale of Equity Investments	$ 38,600,000
Proceeds from recovery of import duties		$ 34,900,000

The difference between the carrying value and the sale price of equity securities, not separately or otherwise categorized as trading or available-for-sale. This element includes investments in which the entity holds a small ownership stake (generally, less than 20% of the shares outstanding) and cannot exert significant influence.

No definition available.

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