Income Taxes (Narrative) (Details) - USD ($) $ / shares in Units, $ in Millions	12 Months Ended
	Dec. 25, 2021	Dec. 26, 2020	Dec. 28, 2019
Income Tax Contingency [Line Items]
Deferred Tax Assets, Goodwill and Intangible Assets	$ 1,111	$ 1,146
Tax expense/(benefit) related to the TCJ Act	$ 190	0	$ (8)
Net tax (benefit)/expense related to the TCJ Act per share	$ 0.14		$ (0.01)
Total gross amount of reserves for income taxes	$ 1,900
Interest accrued	326	338
Interest accrued recognized	(3)	$ (93)
Operating loss carryforwards	30,000
Income tax undistributed international earnings	$ 7,000
Effective Income Tax Rate Reconciliation, Percent	21.80%	20.90%	21.00%
Transition tax liability	$ 2,900
Transition tax, expected payments	309
Transition tax, payments made	309	$ 78	$ 663
Expire in 2016
Income Tax Contingency [Line Items]
Operating loss carryforwards	300
Expire Between 2017 and 2035 Years
Income Tax Contingency [Line Items]
Operating loss carryforwards	26,800
Carried Forward Indefinitely
Income Tax Contingency [Line Items]
Operating loss carryforwards	$ 2,900