Debt (Components of Notes Payable) (Details) (USD $) In Millions, unless otherwise specified	Oct. 01, 2011	Jan. 01, 2011
Principal amount	$ 737	$ 44	[1]
U.S. Commercial Paper [Member]
Principal amount	707	0
Effective interest rate	0.27%
Bank Borrowings [Member]
Principal amount	$ 30	$ 44

[1] * Condensed from audited financial statements.