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Fair Value Measurements (Assets And Liabilities Measured At Fair Value On A Recurring Basis) (Details) (USD $)
In Millions, unless otherwise specified
Sep. 30, 2012
Oct. 02, 2011
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Cash and cash equivalents $ 1,188.6 $ 1,148.1
Short-term investments: Available-for-sale securities 790.8 855.0
Short-term investments: Trading securities 57.6 47.6
Total short-term investments 848.4 902.6
Long-term investments - Available-for-sale securities 116.0 107.0
Total 2,153.0 2,157.7
Short-term derivatives 18.9 21.3
Long-term derivatives 3.0 9.9
Total derivatives 21.9 31.2
Quoted Prices In Active Markets For Identical Assets (Level 1) [Member]
   
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Cash and cash equivalents 1,188.6 1,148.1
Short-term investments: Available-for-sale securities 459.7 606.0
Short-term investments: Trading securities 57.6 47.6
Total short-term investments 517.3 653.6
Long-term investments - Available-for-sale securities 0 0
Total 1,705.9 1,801.7
Short-term derivatives 0 0
Long-term derivatives 0 0
Total derivatives 0 0
Significant Other Observable Inputs (Level 2) [Member]
   
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Cash and cash equivalents 0 0
Short-term investments: Available-for-sale securities 331.1 249.0
Short-term investments: Trading securities 0 0
Total short-term investments 331.1 249.0
Long-term investments - Available-for-sale securities 97.4 79.0
Total 428.5 328.0
Short-term derivatives 18.9 21.3
Long-term derivatives 3.0 9.9
Total derivatives 21.9 31.2
Significant Unobservable Inputs (Level 3) [Member]
   
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Cash and cash equivalents 0 0
Short-term investments: Available-for-sale securities 0 0
Short-term investments: Trading securities 0 0
Total short-term investments 0 0
Long-term investments - Available-for-sale securities 18.6 28.0
Total 18.6 28.0
Short-term derivatives 0 0
Long-term derivatives 0 0
Total derivatives 0 0
Foreign Exchange [Member]
   
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Short-term derivatives 10.1 20.1
Long-term derivatives 3.0 9.9
Foreign Exchange [Member] | Quoted Prices In Active Markets For Identical Assets (Level 1) [Member]
   
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Short-term derivatives 0 0
Long-term derivatives 0 0
Foreign Exchange [Member] | Significant Other Observable Inputs (Level 2) [Member]
   
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Short-term derivatives 10.1 20.1
Long-term derivatives 3.0 9.9
Foreign Exchange [Member] | Significant Unobservable Inputs (Level 3) [Member]
   
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Short-term derivatives 0 0
Long-term derivatives 0 0
Coffee [Member]
   
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Short-term derivatives 8.8 1.2
Coffee [Member] | Quoted Prices In Active Markets For Identical Assets (Level 1) [Member]
   
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Short-term derivatives 0 0
Coffee [Member] | Significant Other Observable Inputs (Level 2) [Member]
   
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Short-term derivatives 8.8 1.2
Coffee [Member] | Significant Unobservable Inputs (Level 3) [Member]
   
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Short-term derivatives 0 0
Agency Obligations [Member]
   
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Short-term investments: Available-for-sale securities 80.0 20.0
Long-term investments - Available-for-sale securities 14.0  
Agency Obligations [Member] | Quoted Prices In Active Markets For Identical Assets (Level 1) [Member]
   
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Short-term investments: Available-for-sale securities 0 0
Long-term investments - Available-for-sale securities 0  
Agency Obligations [Member] | Significant Other Observable Inputs (Level 2) [Member]
   
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Short-term investments: Available-for-sale securities 80.0 20.0
Long-term investments - Available-for-sale securities 14.0  
Agency Obligations [Member] | Significant Unobservable Inputs (Level 3) [Member]
   
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Short-term investments: Available-for-sale securities 0 0
Long-term investments - Available-for-sale securities 0  
Commercial Paper [Member]
   
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Short-term investments: Available-for-sale securities 103.9 87.0
Commercial Paper [Member] | Quoted Prices In Active Markets For Identical Assets (Level 1) [Member]
   
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Short-term investments: Available-for-sale securities 0 0
Commercial Paper [Member] | Significant Other Observable Inputs (Level 2) [Member]
   
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Short-term investments: Available-for-sale securities 103.9 87.0
Commercial Paper [Member] | Significant Unobservable Inputs (Level 3) [Member]
   
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Short-term investments: Available-for-sale securities 0 0
Corporate Debt Securities [Member]
   
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Short-term investments: Available-for-sale securities 84.3 78.0
Long-term investments - Available-for-sale securities 61.3 67.0
Corporate Debt Securities [Member] | Quoted Prices In Active Markets For Identical Assets (Level 1) [Member]
   
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Short-term investments: Available-for-sale securities 0 0
Long-term investments - Available-for-sale securities 0 0
Corporate Debt Securities [Member] | Significant Other Observable Inputs (Level 2) [Member]
   
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Short-term investments: Available-for-sale securities 84.3 78.0
Long-term investments - Available-for-sale securities 61.3 67.0
Corporate Debt Securities [Member] | Significant Unobservable Inputs (Level 3) [Member]
   
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Short-term investments: Available-for-sale securities 0 0
Long-term investments - Available-for-sale securities 0 0
Government Treasury Securities [Member]
   
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Short-term investments: Available-for-sale securities 459.7 606.0
Government Treasury Securities [Member] | Quoted Prices In Active Markets For Identical Assets (Level 1) [Member]
   
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Short-term investments: Available-for-sale securities 459.7 606.0
Government Treasury Securities [Member] | Significant Other Observable Inputs (Level 2) [Member]
   
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Short-term investments: Available-for-sale securities 0 0
Government Treasury Securities [Member] | Significant Unobservable Inputs (Level 3) [Member]
   
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Short-term investments: Available-for-sale securities 0 0
Auction Rate Securities [Member]
   
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Long-term investments - Available-for-sale securities 18.6 28.0
Auction Rate Securities [Member] | Quoted Prices In Active Markets For Identical Assets (Level 1) [Member]
   
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Long-term investments - Available-for-sale securities 0 0
Auction Rate Securities [Member] | Significant Other Observable Inputs (Level 2) [Member]
   
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Long-term investments - Available-for-sale securities 0 0
Auction Rate Securities [Member] | Significant Unobservable Inputs (Level 3) [Member]
   
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Long-term investments - Available-for-sale securities 18.6 28.0
Certificates of Deposit [Member]
   
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Short-term investments: Available-for-sale securities 62.9 64.0
Long-term investments - Available-for-sale securities 22.1 12.0
Certificates of Deposit [Member] | Quoted Prices In Active Markets For Identical Assets (Level 1) [Member]
   
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Short-term investments: Available-for-sale securities 0 0
Long-term investments - Available-for-sale securities 0 0
Certificates of Deposit [Member] | Significant Other Observable Inputs (Level 2) [Member]
   
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Short-term investments: Available-for-sale securities 62.9 64.0
Long-term investments - Available-for-sale securities 22.1 12.0
Certificates of Deposit [Member] | Significant Unobservable Inputs (Level 3) [Member]
   
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Short-term investments: Available-for-sale securities 0 0
Long-term investments - Available-for-sale securities $ 0 $ 0