Share-Based Compensation (Details 4) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 28, 2013	Dec. 29, 2012	Dec. 31, 2011
Restricted Stock Units
Share-Based Compensation Awards
Value of shares, options or units vested	$ 26	$ 35	$ 41
Cash paid	23	25	23
Performance Share Units
Share-Based Compensation Awards
Value of shares, options or units vested	13	10	33
Cash paid	$ 11	$ 52	$ 1