Shareholders' Equity - Accumulated Other Comprehensive Income (Loss) (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 28, 2024	Dec. 30, 2023
Components of Accumulated Other Comprehensive Income (Loss)
Beginning Balance	$ 6,987	$ 7,113
Ending Balance	7,204	6,987
Accumulated Other Comprehensive Loss
Components of Accumulated Other Comprehensive Income (Loss)
Beginning Balance	(644)	(612)
Other comprehensive income (loss) before reclassifications	335	(38)
Reclassified from Accumulated other comprehensive loss	5	6
Ending Balance	(304)	(644)
Pension and Postretirement Benefits Adjustments
Components of Accumulated Other Comprehensive Income (Loss)
Beginning Balance	(598)	(516)
Other comprehensive income (loss) before reclassifications	418	(82)
Reclassified from Accumulated other comprehensive loss	1	0
Ending Balance	(179)	(598)
Foreign Currency Translation Adjustments
Components of Accumulated Other Comprehensive Income (Loss)
Beginning Balance	(49)	(94)
Other comprehensive income (loss) before reclassifications	(74)	45
Reclassified from Accumulated other comprehensive loss	3	0
Ending Balance	(120)	(49)
Deferred Gains (Losses) on Hedge Contracts
Components of Accumulated Other Comprehensive Income (Loss)
Beginning Balance	3	(2)
Other comprehensive income (loss) before reclassifications	(9)	(1)
Reclassified from Accumulated other comprehensive loss	1	6
Ending Balance	$ (5)	$ 3