Special Charges (Summary Of Activity Related To Special Charge Restructuring Accrual) (Details) (2012 Business Realignment Restructuring Plan [Member], USD $) In Millions, unless otherwise specified	3 Months Ended	12 Months Ended
	Mar. 29, 2014	Dec. 28, 2013	Dec. 29, 2012
Restructuring Cost and Reserve [Line Items]
Balance at beginning	$ 87	$ 66
Special charges	34	220	185
Non-cash charges used	(2)	(47)
Cash payments	(51)	(152)
Foreign exchange rate impact	0	0
Balance at ending	68	87	66
Employee Termination Costs [Member]
Restructuring Cost and Reserve [Line Items]
Balance at beginning	54	58
Special charges, severance and benefit costs	12	75
Non-cash charges used	0	0
Cash payments	(22)	(79)
Foreign exchange rate impact	0	0
Balance at ending	44	54
Inventory Charges [Member]
Restructuring Cost and Reserve [Line Items]
Balance at beginning	0	0
Non-cash charges used	(1)	(30)
Cash payments	0	0
Foreign exchange rate impact	0	0
Balance at ending	0	0
Fixed Asset Charges [Member]
Restructuring Cost and Reserve [Line Items]
Balance at beginning	0	0
Non-cash charges used	(1)	(13)
Cash payments	0	0
Foreign exchange rate impact	0	0
Balance at ending	0	0
Other Restructuring [Member]
Restructuring Cost and Reserve [Line Items]
Balance at beginning	33	8
Restructuring reserve period expense	20	102
Non-cash charges used	0	(4)
Cash payments	(29)	(73)
Foreign exchange rate impact	0	0
Balance at ending	24	33
Cost of Sales [Member]
Restructuring Cost and Reserve [Line Items]
Special charges	1	35
Cost of Sales [Member] | Employee Termination Costs [Member]
Restructuring Cost and Reserve [Line Items]
Special charges, severance and benefit costs	0	0
Cost of Sales [Member] | Inventory Charges [Member]
Restructuring Cost and Reserve [Line Items]
Special charges, inventory obsolescence charges	1	30
Cost of Sales [Member] | Fixed Asset Charges [Member]
Restructuring Cost and Reserve [Line Items]
Special charges, fixed asset impairment charges	0	0
Cost of Sales [Member] | Other Restructuring [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring reserve period expense	0	5
Operating Expense [Member]
Restructuring Cost and Reserve [Line Items]
Special charges	33	185
Operating Expense [Member] | Employee Termination Costs [Member]
Restructuring Cost and Reserve [Line Items]
Special charges, severance and benefit costs	12	75
Operating Expense [Member] | Inventory Charges [Member]
Restructuring Cost and Reserve [Line Items]
Special charges, inventory obsolescence charges	0	0
Operating Expense [Member] | Fixed Asset Charges [Member]
Restructuring Cost and Reserve [Line Items]
Special charges, fixed asset impairment charges	1	13
Operating Expense [Member] | Other Restructuring [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring reserve period expense	$ 20	$ 97