Business Combinations Business Combinations (Narrative) (Details) (USD $) In Millions, unless otherwise specified			3 Months Ended	6 Months Ended	3 Months Ended		6 Months Ended			6 Months Ended
	Jun. 29, 2013	Dec. 29, 2012	Jun. 29, 2013 Spinal Modulation [Member]	Jun. 29, 2013 Spinal Modulation [Member]	Sep. 28, 2013 CardioMEMS, Inc. [Member]	Mar. 30, 2013 CardioMEMS, Inc. [Member]	Jun. 29, 2013 CardioMEMS, Inc. [Member]	Jun. 29, 2013 Patented Technology [Member]	Dec. 29, 2012 Patented Technology [Member]	Jun. 29, 2013 Patented Technology [Member] Spinal Modulation [Member]	Jun. 29, 2013 In Process Research and Development [Member] Spinal Modulation [Member]	Mar. 30, 2013 In Process Research and Development [Member] CardioMEMS, Inc. [Member]
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Current Assets			$ 10	$ 10		$ 8
Goodwill, Acquired During Period				117			84
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Indefinite-Lived Intangible Assets											50	69
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Intangible Assets, Other than Goodwill			10	10		0
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Other Noncurrent Assets			1	1		2
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Assets			188	188		163
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Current Liabilities			6	6		13
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Deferred Tax Liabilities Noncurrent			22	22		26
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Noncurrent Liabilities, Other			0	0		4
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Liabilities			28	28		43
Business Combination, Acquisition of Less than 100 Percent, Noncontrolling Interest, Fair Value			160	160		89
Equity Security Ownership Interest And Allocated Value For Purchase Option			40	40		60
Equity Security Ownership Interest			19.00%	19.00%		19.00%
Additional Payment For Acquisition At Company Option			300	300		375
Cost-method Investments, Other than Temporary Impairment						29
Variable Interest Entity, Financial or Other Support, Amount			15		9	28
Finite-Lived Intangible Assets, Gross	$ 982	$ 1,032						$ 934	$ 947	$ 10
Acquired Finite-lived Intangible Assets, Weighted Average Useful Life										12 years