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Earnings Per Share and Certain Related Information - Schedule of EPS to Denominator (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands | 3 Months Ended | 6 Months Ended
--- | --- | ---
Mar. 27, 2020 | Mar. 29, 2019 | Mar. 27, 2020 | Mar. 29, 2019
Numerator for Basic and Diluted EPS: |  |  |  |
Net (loss) earnings attributable to Jacobs from continuing operations | $ (121,967) | $ 114,755 | $ 57,458 | $ 179,648
Net earnings from continuing operations allocated to participating securities | 0 | (191) | (20) | (338)
Net (loss) earnings from continuing operations allocated to common stock for EPS calculation | (121,967) | 114,564 | 57,438 | 179,310
Net earnings (loss) attributable to Jacobs from discontinued operations | 29,880 | (57,838) | 107,468 | 1,565
Net (earnings) loss from discontinued operations allocated to participating securities | 0 | 96 | (38) | (3)
Net earnings (loss) from discontinued operations allocated to common stock for EPS calculation | 29,880 | (57,742) | 107,430 | 1,562
Net (loss) earnings allocated to common stock for EPS calculation | $ (92,087) | $ 56,822 | $ 164,868 | $ 180,872
Denominator for Basic and Diluted EPS: |  |  |  |
Weighted average basic shares (in shares) | 132,556 | 138,566 | 132,879 | 140,509
Shares allocated to participating securities (in shares) | (25) | (231) | (47) | (264)
Shares used for calculating basic EPS attributable to common stock (in shares) | 132,531 | 138,335 | 132,832 | 140,245
Effect of dilutive securities: |  |  |  |
Stock compensation plans (in shares) | 0 | 981 | 1,258 | 1,202
Shares used for calculating diluted EPS attributable to common stock (in shares) | 132,531 | 139,316 | 134,090 | 141,447
Basic (Loss) Earnings Per Share |  |  |  |
Basic Net (Loss) Earnings from Continuing Operations Per Share (in dollars per share) | $ (0.92) | $ 0.83 | $ 0.43 | $ 1.28
Basic Net Earnings from Discontinued Operations Per Share (in dollars per share) | 0.23 | (0.42) | 0.81 | 0.01
Basic (Loss) Earnings Per Share (in dollars per share) | (0.69) | 0.41 | 1.24 | 1.29
Diluted (Loss) Earnings Per Share |  |  |  |
Diluted Net (Loss) Earnings from Continuing Operations Per Share (in dollars per share) | (0.92) | 0.82 | 0.43 | 1.27
Diluted Net Earnings from Discontinued Operations Per Share (in dollars per share) | 0.23 | (0.41) | 0.80 | 0.01
Diluted (Loss) Earnings Per Share (in dollars per share) | $ (0.69) | $ 0.41 | $ 1.23 | $ 1.28

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