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Derivative Instruments - Additional Information (Details) $ in Millions, $ in Billions	3 Months Ended
	Mar. 28, 2026 USD ($)	Mar. 28, 2026 CAD ($)	Sep. 27, 2025 USD ($)	Sep. 27, 2025 CAD ($)
Derivative [Line Items]
Net deferred gains recorded in AOCI for contracts that will mature in the next twelve months	$ 56
Aggregate fair value of derivative instruments with credit-risk-related contingent features in a net liability position by counterparty	700		$ 900
Derivatives designated as hedges \| Interest rate \| Fair Value Hedging
Derivative [Line Items]
Derivative, Notional Amount	12,100		10,600
Derivatives designated as hedges \| Foreign exchange \| Cash Flow Hedging
Derivative [Line Items]
Derivative, Notional Amount	11,000		9,300
Derivatives designated as hedges \| Currency Swap \| Fair Value Hedging
Derivative [Line Items]
Derivative, Notional Amount	900	$ 1.3	900	$ 1.3
Not Designated as Hedging Instrument \| Foreign exchange
Derivative [Line Items]
Derivative, Notional Amount	2,700		3,000
Not Designated as Hedging Instrument \| Other Derivative
Derivative [Line Items]
Derivative, Notional Amount	$ 600		$ 600