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Earnings Per Share | 12 Months Ended
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Sep. 30, 2018
Earnings Per Share [Abstract] |
Earnings per Share | Earnings per Share Calculation of net earnings per common share (“EPS”) — basic and diluted (in millions, except EPS):
Fiscal Year Ended | Sep 30, 2018 |  | Oct 1, 2017 |  | Oct 2, 2016
Net earnings attributable to Starbucks | $ | 4,518.3 |  |  | $ | 2,884.7 |  |  | $ | 2,817.7 |
Weighted average common shares outstanding (for basic calculation) | 1,382.7 |  |  | 1,449.5 |  |  | 1,471.6 |
Dilutive effect of outstanding common stock options and RSUs | 11.9 |  |  | 12.0 |  |  | 15.1 |
Weighted average common and common equivalent shares outstanding (for diluted calculation) | 1,394.6 |  |  | 1,461.5 |  |  | 1,486.7 |
EPS — basic | $ | 3.27 |  |  | $ | 1.99 |  |  | $ | 1.91 |
EPS — diluted | $ | 3.24 |  |  | $ | 1.97 |  |  | $ | 1.90 |
Potential dilutive shares consist of the incremental common shares issuable upon the exercise of outstanding stock options (both vested and non-vested) and unvested RSUs, calculated using the treasury stock method. The calculation of dilutive shares outstanding excludes out-of-the-money stock options (i.e., such options’ exercise prices were greater than the average market price of our common shares for the period) because their inclusion would have been antidilutive. We had 14.1 million, 11.4 million, and 5.4 million out-of-the-money stock options as of September 30, 2018, October 1, 2017, and October 2, 2016, respectively.

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- Definition The entire disclosure for earnings per share. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 260 -URI http://asc.fasb.org/topic&trid=2144383 + Details
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