Product And Geographic Information Product and Geographic Information (Net Sales By Geographic Location) (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended								12 Months Ended
	Jan. 03, 2015	Sep. 27, 2014	Jun. 28, 2014	Mar. 29, 2014	Dec. 28, 2013	Sep. 28, 2013	Jun. 29, 2013	Mar. 30, 2013	Jan. 03, 2015	Dec. 28, 2013	Dec. 29, 2012
Revenues from External Customers and Long-Lived Assets [Line Items]
Net sales	$ 1,439	$ 1,372	$ 1,448	$ 1,363	$ 1,422	$ 1,338	$ 1,403	$ 1,338	$ 5,622	$ 5,501	$ 5,503
UNITED STATES
Revenues from External Customers and Long-Lived Assets [Line Items]
Net sales									2,657	2,596	2,594
JAPAN
Revenues from External Customers and Long-Lived Assets [Line Items]
Net sales									526	567	665
Other foreign countries [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Net sales									$ 2,439	$ 2,338	$ 2,244