Fair Value Measurements (Assets And Liabilities Measured At Fair Value On A Recurring Basis) (Details) (USD $) In Millions, unless otherwise specified	Sep. 29, 2013	Sep. 30, 2012
Assets [Abstract]
Cash and cash equivalents	$ 2,575.7	$ 1,188.6
Short-term investments: Available-for-sale securities	591.5	790.8
Short-term investments: Trading securities	66.6	57.6
Total short-term investments	658.1	848.4
Short-term derivatives	12.5	9.5
Long-term investments - Available-for-sale securities	58.3	116.0
Long-term derivatives	11.4
Total	3,316.0	2,162.5
Liabilities [Abstract]
Short-term derivatives	3.5	18.9
Long-term derivatives	0.5	3.0
Total	4.0	21.9
Quoted Prices In Active Markets For Identical Assets (Level 1) [Member]
Assets [Abstract]
Cash and cash equivalents	2,575.7	1,188.6
Short-term investments: Available-for-sale securities	352.9	459.7
Short-term investments: Trading securities	66.6	57.6
Total short-term investments	419.5	517.3
Short-term derivatives	0	0
Long-term investments - Available-for-sale securities	0	0
Long-term derivatives	0
Total	2,995.2	1,705.9
Liabilities [Abstract]
Short-term derivatives	0	0
Long-term derivatives	0	0
Total	0	0
Significant Other Observable Inputs (Level 2) [Member]
Assets [Abstract]
Cash and cash equivalents	0	0
Short-term investments: Available-for-sale securities	238.6	331.1
Short-term investments: Trading securities	0	0
Total short-term investments	238.6	331.1
Short-term derivatives	12.5	9.5
Long-term investments - Available-for-sale securities	44.9	97.4
Long-term derivatives	11.4
Total	307.4	438.0
Liabilities [Abstract]
Short-term derivatives	3.5	18.9
Long-term derivatives	0.5	3.0
Total	4.0	21.9
Significant Unobservable Inputs (Level 3) [Member]
Assets [Abstract]
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
Short-term derivatives	0	0
Long-term investments - Available-for-sale securities	13.4	18.6
Long-term derivatives	0
Total	13.4	18.6
Liabilities [Abstract]
Short-term derivatives	0	0
Long-term derivatives	0	0
Total	0	0
Agency Obligations [Member]
Assets [Abstract]
Short-term investments: Available-for-sale securities	20.0	80.0
Long-term investments - Available-for-sale securities	8.1	14.0
Agency Obligations [Member] \| Quoted Prices In Active Markets For Identical Assets (Level 1) [Member]
Assets [Abstract]
Short-term investments: Available-for-sale securities	0	0
Long-term investments - Available-for-sale securities	0	0
Agency Obligations [Member] \| Significant Other Observable Inputs (Level 2) [Member]
Assets [Abstract]
Short-term investments: Available-for-sale securities	20.0	80.0
Long-term investments - Available-for-sale securities	8.1	14.0
Agency Obligations [Member] \| Significant Unobservable Inputs (Level 3) [Member]
Assets [Abstract]
Short-term investments: Available-for-sale securities	0	0
Long-term investments - Available-for-sale securities	0	0
Commercial Paper [Member]
Assets [Abstract]
Short-term investments: Available-for-sale securities	127.0	103.9
Commercial Paper [Member] \| Quoted Prices In Active Markets For Identical Assets (Level 1) [Member]
Assets [Abstract]
Short-term investments: Available-for-sale securities	0	0
Commercial Paper [Member] \| Significant Other Observable Inputs (Level 2) [Member]
Assets [Abstract]
Short-term investments: Available-for-sale securities	127.0	103.9
Commercial Paper [Member] \| Significant Unobservable Inputs (Level 3) [Member]
Assets [Abstract]
Short-term investments: Available-for-sale securities	0	0
Corporate Debt Securities [Member]
Assets [Abstract]
Short-term investments: Available-for-sale securities	57.5	84.3
Long-term investments - Available-for-sale securities	36.8	61.3
Corporate Debt Securities [Member] \| Quoted Prices In Active Markets For Identical Assets (Level 1) [Member]
Assets [Abstract]
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]
Assets [Abstract]
Short-term investments: Available-for-sale securities	57.5	84.3
Long-term investments - Available-for-sale securities	36.8	61.3
Corporate Debt Securities [Member] \| Significant Unobservable Inputs (Level 3) [Member]
Assets [Abstract]
Short-term investments: Available-for-sale securities	0	0
Long-term investments - Available-for-sale securities	0	0
Government Treasury Securities [Member]
Assets [Abstract]
Short-term investments: Available-for-sale securities	352.9	459.7
Government Treasury Securities [Member] \| Quoted Prices In Active Markets For Identical Assets (Level 1) [Member]
Assets [Abstract]
Short-term investments: Available-for-sale securities	352.9	459.7
Government Treasury Securities [Member] \| Significant Other Observable Inputs (Level 2) [Member]
Assets [Abstract]
Short-term investments: Available-for-sale securities	0	0
Government Treasury Securities [Member] \| Significant Unobservable Inputs (Level 3) [Member]
Assets [Abstract]
Short-term investments: Available-for-sale securities	0	0
Auction Rate Securities [Member]
Assets [Abstract]
Long-term investments - Available-for-sale securities	13.4	18.6
Auction Rate Securities [Member] \| Quoted Prices In Active Markets For Identical Assets (Level 1) [Member]
Assets [Abstract]
Long-term investments - Available-for-sale securities	0	0
Auction Rate Securities [Member] \| Significant Other Observable Inputs (Level 2) [Member]
Assets [Abstract]
Long-term investments - Available-for-sale securities	0	0
Auction Rate Securities [Member] \| Significant Unobservable Inputs (Level 3) [Member]
Assets [Abstract]
Long-term investments - Available-for-sale securities	13.4	18.6
Certificates of Deposit [Member]
Assets [Abstract]
Short-term investments: Available-for-sale securities	34.1	62.9
Long-term investments - Available-for-sale securities		22.1
Certificates of Deposit [Member] \| Quoted Prices In Active Markets For Identical Assets (Level 1) [Member]
Assets [Abstract]
Short-term investments: Available-for-sale securities	0	0
Long-term investments - Available-for-sale securities		0
Certificates of Deposit [Member] \| Significant Other Observable Inputs (Level 2) [Member]
Assets [Abstract]
Short-term investments: Available-for-sale securities	34.1	62.9
Long-term investments - Available-for-sale securities		22.1
Certificates of Deposit [Member] \| Significant Unobservable Inputs (Level 3) [Member]
Assets [Abstract]
Short-term investments: Available-for-sale securities	0	0
Long-term investments - Available-for-sale securities		$ 0

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Fair value portion of probable future economic benefits obtained or controlled by an entity as a result of past transactions or events.

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Amount of investment in debt and equity securities categorized neither as trading securities nor held-to-maturity securities and intended be sold or mature one year or operating cycle, if longer.

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Investments in debt and equity securities which are categorized neither as held-to-maturity nor trading and which are intended to be sold or mature more than one year from the balance sheet date or operating cycle, if longer. Such securities are reported at fair value; unrealized gains (losses) related to Available-for-sale Securities are excluded from earnings and reported in a separate component of shareholders' equity (other comprehensive income), unless the Available-for-sale security is designated as a hedge or is determined to have had an other than temporary decline in fair value below its amortized cost basis. All or a portion of the unrealized holding gain (loss) of an Available-for-sale security that is designated as being hedged in a fair value hedge is recognized in earnings during the period of the hedge, as are other than temporary declines in fair value below the cost basis for investments in equity securities and debt securities that an entity intends to sell or it is more likely than not that it will be required to sell before the recovery of its amortized cost basis. Other than temporary declines in fair value below the cost basis for debt securities categorized as Available-for-sale that an entity does not intend to sell and for which it is not more likely than not that the entity will be required to sell before the recovery of its amortized cost basis are bifurcated into credit losses and losses related to all other factors. Other than temporary declines in fair value below cost basis related to credit losses are recognized in earnings, and losses related to all other factors are recognized in other comprehensive income.

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Fair value portion of currency on hand as well as demand deposits with banks or financial institutions. Includes other kinds of accounts that have the general characteristics of demand deposits. Also includes short-term, highly liquid investments that are both readily convertible to known amounts of cash and so near their maturity that they present insignificant risk of changes in value because of changes in interest rates.

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Investments which are intended to be sold in the short term (usually less than one year or the normal operating cycle, whichever is longer) including trading securities, available-for-sale securities, held-to-maturity securities, and other short-term investments not otherwise listed in the existing taxonomy.

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