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Earnings per Share (EPS) and Common Stock (Narrative) (Details) - USD ($) shares in Millions |  | 9 Months Ended
--- | --- | ---
Jul. 20, 2018 | Jun. 30, 2018 | Jul. 01, 2017
Earnings Per Share, Basic, by Common Class, Including Two Class Method [Line Items] |  |  |
Stock option restricted shares and restricted stock units excluded from computation of EPS, shares |  | 0.1 | 2.0
Stock Repurchase Program, Authorized Amount |  | $ 500,000,000 |
Payments for Repurchase of Common Stock |  | $ 100,000,000 | $ 34,994,000
Subsequent Event [Member] |  |  |
Earnings Per Share, Basic, by Common Class, Including Two Class Method [Line Items] |  |  |
Stock Repurchase Program, Authorized Amount | $ 1,000,000,000 |  |
Accelerated Share Repurchases, Settlement (Payment) or Receipt | $ 1,000,000,000 |  |
Minimum [Member] | Subsequent Event [Member] |  |  |
Earnings Per Share, Basic, by Common Class, Including Two Class Method [Line Items] |  |  |
Accelerated Share Repurchase Settlement Period | 7 months 15 days |  |
Maximum [Member] | Subsequent Event [Member] |  |  |
Earnings Per Share, Basic, by Common Class, Including Two Class Method [Line Items] |  |  |
Accelerated Share Repurchase Settlement Period | 10 months |  |

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- Definition Amount of cash receipt from (payment to) bank; or stock received from (issuance to) bank in the settlement of the accelerated share repurchase agreement. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 30 -Section 25 -Paragraph 5 -URI http://asc.fasb.org/extlink&oid=6405686&loc=d3e22802-112653 + Details
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- Definition Securities (including those issuable pursuant to contingent stock agreements) that could potentially dilute basic earnings per share (EPS) or earnings per unit (EPU) in the future that were not included in the computation of diluted EPS or EPU because to do so would increase EPS or EPU amounts or decrease loss per share or unit amounts for the period presented. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 260 -SubTopic 10 -Section 50 -Paragraph 1 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=6371337&loc=d3e3550-109257 + Details
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- Definition The cash outflow to reacquire common stock during the period. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 15 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=98514028&loc=d3e3291-108585 + Details
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