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Financing Transactions (Narrative) (Details) (USD $)
Share data in Millions, except Per Share data, unless otherwise specified
3 Months Ended
Mar. 30, 2012
Dec. 31, 2011
Mar. 30, 2012
Euro Commercial Paper Program [Member]
Mar. 30, 2012
Liquid Yield Option Notes (LYONs) [Member]
Mar. 30, 2012
Unsecured Revolving Credit Facility [Member]
Mar. 30, 2012
U.S Commercial Paper [Member]
Debt Instrument [Line Items]            
Shares issued under debt conversion       1    
Deferred tax liability, basis difference in LYONs       $ 10,000,000    
Common stock, par value $ 0.01 $ 0.01   $ 0.01    
Weighted average interest rate of short-term debt           0.20%
Weighted average maturity of commercial paper, days           17
Line of credit           2,500,000,000
Debt instrument maturity date         Jul. 15, 2016  
Borrowings outstanding under credit facility     $ 0   $ 0