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Business And Summary Of Significant Accounting Policies (Narrative) (Details) - USD ($)
12 Months Ended
Oct. 02, 2021
Oct. 03, 2020
Sep. 28, 2019
Accounting Policies [Line Items]      
Checks outstanding in excess of related book cash $ 120,000,000 $ 200,000,000  
Allowance for uncollectible accounts $ 25,000,000 26,000,000  
Reporting Unit, Percentage of Fair Value in Excess of Carrying Amount 20.00%    
Maximum Length Of Time Hedged Anticipated Transactions 18 months    
Research and development costs $ 114,000,000 98,000,000 $ 97,000,000
Goodwill $ 11,166,000,000 11,516,000,000 11,461,000,000
Indefinite-lived intangibles, Percentage of Fair Value in Excess of Carrying Amount 20.00%    
Equity Method Investments $ 350,000,000 287,000,000  
Restricted Cash 130,000,000 46,000,000 0
Selling, General and Administrative Expenses [Member]      
Accounting Policies [Line Items]      
Advertising Expense 246,000,000 283,000,000 $ 276,000,000
Other Current Assets [Member]      
Accounting Policies [Line Items]      
Restricted Cash $ 127,000,000 $ 0  
Minimum [Member] | Customer Relationships [Member]      
Accounting Policies [Line Items]      
Finite-Lived Intangible Asset, Useful Life 7 years    
Maximum [Member] | Brands & Trademarks      
Accounting Policies [Line Items]      
Finite-Lived Intangible Asset, Useful Life 20 years    
Maximum [Member] | Customer Relationships [Member]      
Accounting Policies [Line Items]      
Finite-Lived Intangible Asset, Useful Life 30 years    
Buildings And Leasehold Improvements [Member] | Minimum [Member]      
Accounting Policies [Line Items]      
Property, plant, and equipment estimated lives 10 years    
Buildings And Leasehold Improvements [Member] | Maximum [Member]      
Accounting Policies [Line Items]      
Property, plant, and equipment estimated lives 33 years    
Machinery And Equipment [Member] | Minimum [Member]      
Accounting Policies [Line Items]      
Property, plant, and equipment estimated lives 3 years    
Machinery And Equipment [Member] | Maximum [Member]      
Accounting Policies [Line Items]      
Property, plant, and equipment estimated lives 12 years    
Land Improvements [Member] | Minimum [Member]      
Accounting Policies [Line Items]      
Property, plant, and equipment estimated lives 3 years    
Land Improvements [Member] | Maximum [Member]      
Accounting Policies [Line Items]      
Property, plant, and equipment estimated lives 20 years    
Domestic Chicken [Member]      
Accounting Policies [Line Items]      
Goodwill $ 3,300,000,000    
International Reporting Unit      
Accounting Policies [Line Items]      
Goodwill $ 200,000,000