Financing Transactions (Narrative) (Details) Share data in Millions, except Per Share data, unless otherwise specified	3 Months Ended	9 Months Ended				9 Months Ended			9 Months Ended
	Sep. 27, 2013 USD ($)	Sep. 27, 2013 USD ($)	Sep. 28, 2012 USD ($)	Dec. 31, 2012 USD ($)	May 31, 2012 USD ($)	Sep. 27, 2013 Eurobond Senior Notes EUR (€)	Sep. 27, 2013 2013 Notes USD ($)	Dec. 31, 2012 2013 Notes USD ($)	Sep. 27, 2013 Liquid Yield Option Notes (LYONs) USD ($)	Sep. 27, 2013 Senior Notes Due Two Thousand Fourteen USD ($)	Dec. 31, 2012 Senior Notes Due Two Thousand Fourteen USD ($)	Sep. 27, 2013 Unsecured Revolving Credit Facility USD ($)	Sep. 27, 2013 U.S Commercial Paper	Sep. 27, 2013 Commercial Paper [Member] USD ($)	Sep. 27, 2013 Euro-Denominated Commercial Paper [Member] USD ($)
Debt Instrument [Line Items]
Repayments of senior notes		$ 966,900,000	$ 3,400,000			€ (500,000,000)	$ (300,000,000)
Weighted average maturity of commercial paper	22 days
Shares issued under debt conversion (shares)									4.4
Common stock, par value (dollars per share)	$ 0.01	$ 0.01		$ 0.01	$ 0.01
Deferred tax liability, basis difference in LYONs									41,000,000
Weighted average interest rate of short-term debt (interest rate)													0.10%
Commercial paper	450,000,000	450,000,000		1,224,500,000											0
Senior notes							0	300,000,000		400,000,000	400,000,000
Interest rate of debt instrument						4.50%				1.30%
Borrowings outstanding under credit facility												0
Line of credit														$ 2,500,000,000