Summary of Significant Accounting Policies (Details Textuals) (USD $) In Millions, unless otherwise specified	6 Months Ended
	Jun. 30, 2013	Jul. 01, 2012	Dec. 30, 2012	Jan. 01, 2012
Concentration of Credit Risk [Line Items]
Net Cash Provided by (used in) Investing Activities	$ (1,972)	$ (70)
Net Cash Provided by (Used in) Financing Activities	2,754	17,438
Net Cash Provided by (Used in) Operating Activities	7,328	7,040
Cash and Cash Equivalents, at Carrying Value	17,307	14,042	14,911	24,542
Synthes, Inc [Member]
Concentration of Credit Risk [Line Items]
Net Cash Provided by (used in) Investing Activities		13,300
Net Cash Provided by (Used in) Financing Activities		12,800
Net Cash Provided by (Used in) Operating Activities		$ 500