Equity (Narrative) (Details) (USD $) Share data in Millions, unless otherwise specified	1 Months Ended	3 Months Ended	6 Months Ended		12 Months Ended
	Feb. 22, 2014	Jun. 29, 2013	Jun. 28, 2014	Jun. 29, 2013	Dec. 28, 2013
Equity [Abstract]
Anti-dilutive potential common shares excluded from reconciliation		6	4	4
Equity Class Of Treasury Stock [Line Items]
Stock repurchase program, authorized amount	$ 1,500,000,000
Common stock repurchases shares			6	8
Common stock repurchases value			$ 329,000,000	$ 508,000,000	$ 544,000,000