Special Charges (Summary Of Activity Related To Special Charge Restructuring Accrual) (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended	12 Months Ended
	Mar. 30, 2013	Dec. 29, 2012	Dec. 31, 2011
2011 Restructuring Plan [Member]
Restructuring Cost and Reserve [Line Items]
Balance at beginning	$ 42	$ 72
Special charges	9	102	162
Non-cash charges used		(17)
Cash payments	(19)	(115)
Foreign exchange rate impact		0
Balance at ending	32	42	72
2011 Restructuring Plan [Member] | Employee Termination Costs [Member]
Restructuring Cost and Reserve [Line Items]
Balance at beginning	25	54
Special charges, severance and benefit costs	2	38
Non-cash charges used		0
Cash payments	(13)	(68)
Foreign exchange rate impact		1
Balance at ending	14	25
2011 Restructuring Plan [Member] | Inventory Charges [Member]
Restructuring Cost and Reserve [Line Items]
Balance at beginning	0	0
Non-cash charges used		(13)
Cash payments	0	0
Foreign exchange rate impact		0
Balance at ending	0	0
2011 Restructuring Plan [Member] | Other Restructuring [Member]
Restructuring Cost and Reserve [Line Items]
Balance at beginning	17	18
Special charges, other		51
Non-cash charges used		(4)
Cash payments	(6)	(47)
Foreign exchange rate impact		(1)
Balance at ending	18	17
2011 Restructuring Plan [Member] | cardiac rhythm management business [Member] | Other Restructuring [Member]
Restructuring Cost and Reserve [Line Items]
Special charges, other	7	37
2012 Business Realignment Restructuring Plan [Member]
Restructuring Cost and Reserve [Line Items]
Balance at beginning	66	0
Special charges	34	185
Non-cash charges used	(20)	(61)
Cash payments	(35)	(59)
Foreign exchange rate impact	(1)	1
Balance at ending	44	66
2012 Business Realignment Restructuring Plan [Member] | Employee Termination Costs [Member]
Restructuring Cost and Reserve [Line Items]
Balance at beginning	58	0
Special charges, severance and benefit costs	10	109
Non-cash charges used	0	0
Cash payments	(32)	(52)
Foreign exchange rate impact	(1)	1
Balance at ending	35	58
2012 Business Realignment Restructuring Plan [Member] | Inventory Charges [Member]
Restructuring Cost and Reserve [Line Items]
Balance at beginning	0	0
Non-cash charges used	(18)	(17)
Cash payments	0	0
Foreign exchange rate impact	0	0
Balance at ending	0	0
2012 Business Realignment Restructuring Plan [Member] | Fixed Asset Charges [Member]
Restructuring Cost and Reserve [Line Items]
Balance at beginning	0	0
Non-cash charges used	(2)	(41)
Cash payments	0	0
Foreign exchange rate impact	0	0
Balance at ending		0
2012 Business Realignment Restructuring Plan [Member] | Other Restructuring [Member]
Restructuring Cost and Reserve [Line Items]
Balance at beginning	8	0
Special charges, other	4	18
Non-cash charges used	0	(3)
Cash payments	(3)	(7)
Foreign exchange rate impact	0	0
Balance at ending	9	8
Cost of Sales [Member] | 2011 Restructuring Plan [Member]
Restructuring Cost and Reserve [Line Items]
Special charges		44
Cost of Sales [Member] | 2011 Restructuring Plan [Member] | Employee Termination Costs [Member]
Restructuring Cost and Reserve [Line Items]
Special charges, severance and benefit costs		11
Cost of Sales [Member] | 2011 Restructuring Plan [Member] | Inventory Charges [Member]
Restructuring Cost and Reserve [Line Items]
Special charges, inventory obsolescence charges		13
Cost of Sales [Member] | 2011 Restructuring Plan [Member] | Other Restructuring [Member]
Restructuring Cost and Reserve [Line Items]
Special charges, other		20
Cost of Sales [Member] | 2012 Business Realignment Restructuring Plan [Member]
Restructuring Cost and Reserve [Line Items]
Special charges	18	24
Cost of Sales [Member] | 2012 Business Realignment Restructuring Plan [Member] | Employee Termination Costs [Member]
Restructuring Cost and Reserve [Line Items]
Special charges, severance and benefit costs	0	5
Cost of Sales [Member] | 2012 Business Realignment Restructuring Plan [Member] | Inventory Charges [Member]
Restructuring Cost and Reserve [Line Items]
Special charges, inventory obsolescence charges	18	17
Cost of Sales [Member] | 2012 Business Realignment Restructuring Plan [Member] | Fixed Asset Charges [Member]
Restructuring Cost and Reserve [Line Items]
Special charges, fixed asset impairment charges	0	0
Cost of Sales [Member] | 2012 Business Realignment Restructuring Plan [Member] | Other Restructuring [Member]
Restructuring Cost and Reserve [Line Items]
Special charges, other	0	2
Cost of Sales [Member] | 2012 Business Realignment Restructuring Plan [Member] | CATD | Inventory Charges [Member]
Restructuring Cost and Reserve [Line Items]
Special charges, inventory obsolescence charges	18	17
Operating Expense [Member] | 2011 Restructuring Plan [Member]
Restructuring Cost and Reserve [Line Items]
Special charges	9	58
Operating Expense [Member] | 2011 Restructuring Plan [Member] | Employee Termination Costs [Member]
Restructuring Cost and Reserve [Line Items]
Special charges, severance and benefit costs	2	27
Operating Expense [Member] | 2011 Restructuring Plan [Member] | Inventory Charges [Member]
Restructuring Cost and Reserve [Line Items]
Special charges, inventory obsolescence charges	0	0
Operating Expense [Member] | 2011 Restructuring Plan [Member] | Other Restructuring [Member]
Restructuring Cost and Reserve [Line Items]
Special charges, other	7	31
Operating Expense [Member] | 2012 Business Realignment Restructuring Plan [Member]
Restructuring Cost and Reserve [Line Items]
Special charges	16	161
Operating Expense [Member] | 2012 Business Realignment Restructuring Plan [Member] | Employee Termination Costs [Member]
Restructuring Cost and Reserve [Line Items]
Special charges, severance and benefit costs	10	104
Operating Expense [Member] | 2012 Business Realignment Restructuring Plan [Member] | Inventory Charges [Member]
Restructuring Cost and Reserve [Line Items]
Special charges, inventory obsolescence charges	0	0
Operating Expense [Member] | 2012 Business Realignment Restructuring Plan [Member] | Fixed Asset Charges [Member]
Restructuring Cost and Reserve [Line Items]
Special charges, fixed asset impairment charges	2	41
Operating Expense [Member] | 2012 Business Realignment Restructuring Plan [Member] | Other Restructuring [Member]
Restructuring Cost and Reserve [Line Items]
Special charges, other	$ 4	$ 16