Debt - Borrowings and Repayments (Detail) - USD ($) $ in Millions			3 Months Ended	6 Months Ended
	Jun. 25, 2025	Nov. 08, 2024	Jun. 30, 2025	Jun. 30, 2025	Jun. 30, 2024
Debt
Debt repayments				$ 9,234	$ 8,752
Net proceeds				9,135	$ 9,180
Commercial Paper Program [Member]
Debt
Commercial paper repayments				8,700
Commercial paper borrowings				$ 9,000
3.125% senior notes due March 2025 [Member]
Debt
Interest rate (as a percent)			3.125%	3.125%
Debt repayments				$ 422
3.875% Senior Notes due 2029 [Member]
Debt
Interest rate (as a percent)		3.875%
Debt amount tendered	$ 483	$ 485
Debt amount tendered (as a percent)	99.00%
Tax Exempt Bonds [Member]
Debt
Net proceeds			$ 130
Senior Notes 0.750 Percent Due November 2025 [Member]
Debt
Interest rate (as a percent)			0.75%	0.75%