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Derivative Instruments - Additional Information (Details)
$ in Millions, $ in Millions
3 Months Ended
Jan. 01, 2022
USD ($)
Jan. 01, 2022
CAD ($)
Oct. 02, 2021
USD ($)
Oct. 02, 2021
CAD ($)
Derivative [Line Items]        
Net deferred gains recorded in AOCI for contracts that will mature in the next twelve months $ 119      
Hedging Period for Foreign Currency Transactions, Maximum 4 years      
Aggregate fair value of derivative instruments with credit-risk-related contingent features in a net liability position by counterparty $ 301   $ 244  
Derivatives designated as hedges | Interest rate | Fair Value Hedging        
Derivative [Line Items]        
Derivative, Notional Amount 15,100   15,100  
Derivatives designated as hedges | Foreign exchange | Cash Flow Hedging        
Derivative [Line Items]        
Derivative, Notional Amount 8,100   6,900  
Derivatives designated as hedges | Currency Swap | Fair Value Hedging        
Derivative [Line Items]        
Derivative, Notional Amount 1,000 $ 1,300 1,000 $ 1,300
Not Designated as Hedging Instrument | Foreign exchange        
Derivative [Line Items]        
Derivative, Notional Amount 3,900   3,500  
Not Designated as Hedging Instrument | Other Derivative        
Derivative [Line Items]        
Derivative, Notional Amount $ 400   $ 400