Fair Value Measurements (Assets And Liabilities Measured At Fair Value On A Recurring Basis) (Details) (USD $) In Millions, unless otherwise specified	Jul. 01, 2012	Oct. 02, 2011
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Short-term investments: Available-for-sale securities	$ 940.2	$ 855.0
Short-term investments: Trading securities	56.1	47.6
Total short-term investments	996.3	902.6
Long-term investments	140.1	107.0
Total	1,136.4	1,009.6
Short-term derivatives	34.1	21.3
Long-term derivatives	6.1	9.9
Total derivatives	40.2	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]
Short-term investments: Available-for-sale securities	499.6	606.0
Short-term investments: Trading securities	56.1	47.6
Total short-term investments	555.7	653.6
Long-term investments	0	0
Total	555.7	653.6
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]
Short-term investments: Available-for-sale securities	440.6	249.0
Short-term investments: Trading securities	0	0
Total short-term investments	440.6	249.0
Long-term investments	111.7	79.0
Total	552.3	328.0
Short-term derivatives	34.1	21.3
Long-term derivatives	6.1	9.9
Total derivatives	40.2	31.2
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
Short-term investments: Trading securities	0	0
Total short-term investments	0	0
Long-term investments	28.4	28.0
Total	28.4	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	8.4	20.1
Long-term derivatives	2.3	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	8.4	20.1
Long-term derivatives	2.3	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	25.7	1.2
Long-term derivatives	3.8
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
Long-term derivatives	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	25.7	1.2
Long-term derivatives	3.8
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
Long-term derivatives	0
Agency Obligations [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Short-term investments: Available-for-sale securities	100.0	20.0
Long-term investments	4.0
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	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	100.0	20.0
Long-term investments	4.0
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	0
Commercial Paper [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Short-term investments: Available-for-sale securities	193.9	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	193.9	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	80.8	78.0
Long-term investments	73.6	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	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	80.8	78.0
Long-term investments	73.6	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	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	499.6	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	499.6	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
State And Local Government Obligations [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Long-term investments	28.4	28.0
State And Local Government 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]
Long-term investments	0	0
State And Local Government Obligations [Member] | Significant Other Observable Inputs (Level 2) [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Long-term investments	0	0
State And Local Government Obligations [Member] | Significant Unobservable Inputs (Level 3) [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Long-term investments	28.4	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	65.9	64.0
Long-term investments	34.1	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	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	65.9	64.0
Long-term investments	34.1	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	$ 0	$ 0