Significant Accounting Policies Earnings Per Common Share (Details) - shares shares in Millions |
12 Months Ended | ||
|---|---|---|---|
Sep. 30, 2018 |
Sep. 24, 2017 |
Sep. 25, 2016 |
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| Incremental Dilutive Common Share Equivalents [Abstract] | |||
| Dilutive common share equivalents included in diluted shares | 0.0 | 13.0 | 13.9 |
| Shares of common stock equivalents not included because the effect would be anti-dilutive or certain performance conditions were not satisfied at the end of the period | 51.2 | 3.0 | 2.4 |
| X | ||||||||||
- 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. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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| X | ||||||||||
- Definition Additional shares included in the calculation of diluted EPS as a result of the potentially dilutive effect of share based payment arrangements using the treasury stock method. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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| X | ||||||||||
- References No definition available.
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