Debt - Components of Notes Payable (Details) - USD ($) $ in Millions	Jul. 04, 2015	Jan. 03, 2015
Short-term Debt [Line Items]
Principal amount	$ 939	$ 828	[1]
Bank borrowings
Short-term Debt [Line Items]
Principal amount	54	51
Europe commercial paper
Short-term Debt [Line Items]
Principal amount	$ 28	$ 96
Effective interest rate	0.05%	0.09%
U.S. commercial paper
Short-term Debt [Line Items]
Principal amount	$ 857	$ 681
Effective interest rate	0.44%	0.36%

[1] Condensed from audited financial statements.