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Debt (Components of Long-Term Debt Including Associated Interest Rates and Related Fair Values) (Details) - USD ($) $ in Millions | Dec. 27, 2015 | Sep. 27, 2015
--- | --- | ---
Debt Instrument [Line Items] |  |  |
Total, Face Value |  | $ 2,350.0 | $ 2,350.0
Aggregate unamortized discount |  | 2.3 | 2.5
Total, Carrying Value, net of aggregate unamortized discount |  | 2,347.7 | 2,347.5
Total, Estimated Fair Value |  | 2,425.0 | 2,402.0
Point Eight Seven Five Percentage Senior Notes [Member] |  |  |
Debt Instrument [Line Items] |  |  |
Debt Instrument, Face Value |  | $ 400.0 | 400.0
Stated Interest Rate |  | 0.875% |
Effective Interest Rate | [1] | 0.941% |
Two Point Zero Percentage Senior Notes [Member] |  |  |
Debt Instrument [Line Items] |  |  |
Debt Instrument, Face Value |  | $ 350.0 | 350.0
Stated Interest Rate |  | 2.00% |
Effective Interest Rate | [1] | 2.012% |
Two Point Seven Percentage Senior Notes [Member] |  |  |
Debt Instrument [Line Items] |  |  |
Debt Instrument, Face Value |  | $ 500.0 | 500.0
Stated Interest Rate |  | 2.70% |
Effective Interest Rate | [1] | 2.819% |
Three Point Eight Five Percentage Senior Notes [Member] |  |  |
Debt Instrument [Line Items] |  |  |
Debt Instrument, Face Value |  | $ 750.0 | 750.0
Stated Interest Rate |  | 3.85% |
Effective Interest Rate | [1] | 2.86% |
Four Point Three Percentage Senior Notes [Member] |  |  |
Debt Instrument [Line Items] |  |  |
Debt Instrument, Face Value |  | $ 350.0 | 350.0
Stated Interest Rate |  | 4.30% |
Effective Interest Rate | [1] | 4.348% |
Fair Value, Inputs, Level 2 [Member] | Point Eight Seven Five Percentage Senior Notes [Member] |  |  |
Debt Instrument [Line Items] |  |  |
Estimated Fair Value |  | $ 399.0 | 400.0
Fair Value, Inputs, Level 2 [Member] | Two Point Zero Percentage Senior Notes [Member] |  |  |
Debt Instrument [Line Items] |  |  |
Estimated Fair Value |  | 354.0 | 354.0
Fair Value, Inputs, Level 2 [Member] | Two Point Seven Percentage Senior Notes [Member] |  |  |
Debt Instrument [Line Items] |  |  |
Estimated Fair Value |  | 501.0 | 503.0
Fair Value, Inputs, Level 2 [Member] | Three Point Eight Five Percentage Senior Notes [Member] |  |  |
Debt Instrument [Line Items] |  |  |
Estimated Fair Value |  | 800.0 | 790.0
Fair Value, Inputs, Level 2 [Member] | Four Point Three Percentage Senior Notes [Member] |  |  |
Debt Instrument [Line Items] |  |  |
Estimated Fair Value |  | $ 371.0 | $ 355.0
[1] | Includes the effects of the amortization of any premium or discount and any gain or loss upon settlement of related treasury locks or forward-starting interest rate swaps utilized to hedge the interest rate risk prior to the debt issuance.

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- Definition Amount of long-term debt before deduction of unamortized discount or premium. Includes, but is not limited to, notes payable, bonds payable, commercial loans, mortgage loans, convertible debt, subordinated debt and other types of debt, with initial maturities beyond one year or the normal operating cycle, if longer. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.22) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 20 -Article 5 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 03 -Paragraph 16 -Article 9 + Details
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- Definition Face (par) amount of debt instrument at time of issuance. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 835 -SubTopic 30 -Section 55 -Paragraph 8 -URI http://asc.fasb.org/extlink&oid=34725769&loc=d3e28878-108400 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 835 -SubTopic 30 -Section 45 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=6451184&loc=d3e28551-108399 + Details
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- Definition Fair value portion of debt instrument payable, including, but not limited to, notes payable and loans payable. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 825 -SubTopic 10 -Section 50 -Paragraph 10 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=49121117&loc=d3e13433-108611 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 825 -SubTopic 10 -Section 50 -Paragraph 12 -URI http://asc.fasb.org/extlink&oid=49121117&loc=d3e13476-108611 + Details
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- Definition Effective interest rate for the funds borrowed under the debt agreement considering interest compounding and original issue discount or premium. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.22(a)(1)) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 835 -SubTopic 30 -Section 45 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=6451184&loc=d3e28551-108399 + Details
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- Definition Contractual interest rate for funds borrowed, under the debt agreement. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.22(a)(1)) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 + Details
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- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. + References No definition available. + Details
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- Definition The amount of debt discount that was originally recognized at the issuance of the instrument that has yet to be amortized. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 835 -SubTopic 30 -Section 45 -Paragraph 1A -URI http://asc.fasb.org/extlink&oid=6451184&loc=d3e28541-108399 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 835 -SubTopic 30 -Section 55 -Paragraph 8 -URI http://asc.fasb.org/extlink&oid=34725769&loc=d3e28878-108400 + Details
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- Definition Carrying amount of long-term debt, net of unamortized discount or premium, including current and noncurrent amounts. Includes, but not limited to, notes payable, bonds payable, debentures, mortgage loans and commercial paper. Excludes capital lease obligations. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-03.16) -URI http://asc.fasb.org/extlink&oid=6876686&loc=d3e534808-122878 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.22) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 944 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.7-03.16) -URI http://asc.fasb.org/extlink&oid=6879938&loc=d3e572229-122910 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 20, 22 -Article 5 + Details
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- Definition The fair value amount of long-term debt whether such amount is presented as a separate caption or as a parenthetical disclosure. Additionally, this element may be used in connection with the fair value disclosures required in the footnote disclosures to the financial statements. The element may be used in both the balance sheet and disclosure in the same submission. + References No definition available. + Details
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