Debt (Components of Notes Payable) (Details) (USD $) In Millions, unless otherwise specified	Jun. 29, 2013	Dec. 29, 2012
Short-term Debt [Line Items]
Principal amount	$ 1,136	$ 1,065	[1]
Euro Commercial Paper [Member]
Short-term Debt [Line Items]
Principal amount	241	159
Effective interest rate	0.18%	0.18%
U.S. Commercial Paper [Member]
Short-term Debt [Line Items]
Principal amount	836	853
Effective interest rate	0.22%	0.26%
Bank Borrowings [Member]
Short-term Debt [Line Items]
Principal amount	$ 59	$ 53

[1] Condensed from audited financial statements.