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Employee Stock and Benefit Plans (Narrative) (Details) - USD ($) $ / shares in Units, shares in Millions, $ in Millions | 12 Months Ended |
--- | --- | ---
Sep. 30, 2018 | Oct. 01, 2017 | Oct. 02, 2016 | Nov. 01, 2018
Maximum permitted contribution to Employee Stock Purchase Plan, percent | 10.00% |  |  |
Discounted stock purchase price, percent of market value | 95.00% |  |  |
Number of shares issued under plan | 0.6 |  |  |
Matching contributions | $ 111.7 | $ 101.4 | $ 86.2 |
Stock Options and Restricted Stock Units [Member] |  |  |  |
Common stock available for issuance | 56.9 |  |  |
Employee Stock [Member] |  |  |  |
Common stock available for issuance | 12.7 |  |  |
Stock Options [Member] |  |  |  |
Award expiration period (years) | 10 years |  |  |
Total unrecognized stock-based compensation expense, net of estimated forfeitures | $ 19.0 |  |  |
Weighted average recognition period for total unrecognized stock-based compensation expense (in years) | 2 years 4 months 24 days |  |  |
Total intrinsic value of stock options exercised | $ 236.0 | 181.0 | 254.0 |
Total fair value of options vested | 53.0 | $ 40.0 | $ 37.0 |
Restricted Stock Units (RSUs) [Member] |  |  |  |
Total unrecognized stock-based compensation expense, net of estimated forfeitures | $ 192.0 |  |  |
Weighted average recognition period for total unrecognized stock-based compensation expense (in years) | 1 year 10 months 24 days |  |  |
Granted, weighted average grant date fair value per share | $ 56,480,000.00 | $ 54.30 | $ 58.81 |
Total fair value of RSUs vested | $ 166.0 | $ 182.0 | $ 169.0 |
Director [Member] | Stock Options [Member] | Minimum [Member] |  |  |  |
Award vesting period for non-employee directors (years) | 1 year |  |  |
Director [Member] | Stock Options [Member] | Maximum [Member] |  |  |  |
Award vesting period for non-employee directors (years) | 3 years |  |  |
Subsequent Event [Member] |  |  |  |
Stock Repurchase Program, Number of Shares Authorized to be Repurchased |  |  |  | 120.0

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- Definition Unrecognized cost of unvested share-based compensation awards. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (i) -URI http://asc.fasb.org/extlink&oid=109197908&loc=d3e5070-113901 + Details
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- Definition Weighted average period over which unrecognized compensation is expected to be recognized for equity-based compensation plans, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (i) -URI http://asc.fasb.org/extlink&oid=109197908&loc=d3e5070-113901 + Details
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- Definition Period which an employee's right to exercise an award is no longer contingent on satisfaction of either a service condition, market condition or a performance condition, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (a)(1) -URI http://asc.fasb.org/extlink&oid=109197908&loc=d3e5070-113901 + Details
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- Definition The weighted average fair value at grant date for nonvested equity-based awards issued during the period on other than stock (or unit) option plans (for example, phantom stock or unit plan, stock or unit appreciation rights plan, performance target plan). + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c)(2)(iii)(1) -URI http://asc.fasb.org/extlink&oid=109197908&loc=d3e5070-113901 + Details
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- Definition The highest percentage of annual salary that an employee is permitted to utilize with respect to the plan. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=109197908&loc=d3e5070-113901 + Details
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- Definition Period from grant date that an equity-based award expires, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (a)(2) -URI http://asc.fasb.org/extlink&oid=109197908&loc=d3e5070-113901 + Details
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