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Derivative Instruments - Additional Information (Details)
$ in Millions, $ in Millions
3 Months Ended 6 Months Ended
Apr. 01, 2023
USD ($)
Apr. 01, 2023
USD ($)
Apr. 01, 2023
CAD ($)
Oct. 01, 2022
USD ($)
Oct. 01, 2022
CAD ($)
Derivative [Line Items]          
Net deferred gains recorded in AOCI for contracts that will mature in the next twelve months $ 244        
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 1,500 $ 1,500   $ 1,500  
Derivatives designated as hedges | Interest rate | Fair Value Hedging          
Derivative [Line Items]          
Derivative, Notional Amount 13,500 13,500   14,500  
Derivatives designated as hedges | Foreign exchange | Cash Flow Hedging          
Derivative [Line Items]          
Derivative, Notional Amount 8,400 8,400   7,400  
Derivatives designated as hedges | Currency Swap | Fair Value Hedging          
Derivative [Line Items]          
Derivative, Notional Amount 1,000 1,000 $ 1,300 900 $ 1,300
Not Designated as Hedging Instrument | Foreign exchange          
Derivative [Line Items]          
Derivative, Notional Amount 4,300 4,300   3,800  
Not Designated as Hedging Instrument | Other Derivative          
Derivative [Line Items]          
Derivative, Notional Amount $ 400 $ 400   $ 400