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v3.19.3

Quarterly Data (unaudited) (Details) - USD ($) $ / shares in Units, $ in Millions |  |  | 3 Months Ended | 12 Months Ended
--- | --- | --- | --- | ---
Aug. 21, 2019 | Aug. 01, 2019 | Sep. 30, 2019 | Jun. 30, 2019 | Mar. 31, 2019 | Dec. 31, 2018 | Sep. 30, 2018 | Jun. 30, 2018 | Mar. 31, 2018 | Dec. 31, 2017 | Sep. 30, 2019 | Sep. 30, 2018 | Sep. 30, 2017
Quarterly Financial Data [Abstract] |  |  |  |  |  |  |  |  |  |  |  |  |
Revenues |  |  | $ 1,150.4 | $ 1,363.7 | $ 2,606.1 | $ 2,200.2 | $ 1,273.1 | $ 1,440.9 | $ 2,812.0 | $ 2,125.2 | $ 7,320.4 | $ 7,651.2 | $ 6,120.7
Operating income (loss) |  |  | (99.0) | 9.6 | 538.8 | 167.7 | 49.2 | 29.5 | 591.0 | 395.0 | 617.1 | 1,064.7 | 1,010.0
Net income (loss) including noncontrolling interests |  |  | (130.8) | (46.5) | 396.7 | 88.5 | (7.8) | (11.7) | 407.7 | 434.2 | 307.9 | 822.4 | 523.8
Net income (loss) attributable to UGI Corporation |  |  | $ (51.5) | $ (1.9) | $ 245.4 | $ 64.2 | $ 24.4 | $ 52.4 | $ 276.0 | $ 365.9 | $ 256.2 | $ 718.7 | $ 436.6
Earnings (loss) per common share attributable to UGI Corporation stockholders: |  |  |  |  |  |  |  |  |  |  |  |  |
Basic (in dollars per share) |  |  | $ (0.27) | $ (0.01) | $ 1.41 | $ 0.37 | $ 0.14 | $ 0.30 | $ 1.59 | $ 2.11 | $ 1.44 | $ 4.13 | $ 2.51
Diluted (in dollars per share) |  |  | $ (0.27) | $ (0.01) | $ 1.38 | $ 0.36 | $ 0.14 | $ 0.30 | $ 1.57 | $ 2.07 | $ 1.41 | $ 4.06 | $ 2.46
Weighted-average common shares outstanding (thousands): |  |  |  |  |  |  |  |  |  |  |  |  |
Basic (in shares) |  |  | 189,905,000 | 174,759,000 | 174,501,000 | 174,413,000 | 174,391,000 | 173,991,000 | 173,570,000 | 173,670,000 | 178,417,000 | 173,908,000 | 173,662,000
Diluted (in shares) |  |  | 189,905,000 | 174,759,000 | 177,318,000 | 177,566,000 | 177,506,000 | 176,807,000 | 176,350,000 | 176,948,000 | 181,111,000 | 176,905,000 | 177,159,000
Effect of Fourth Quarter Events [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |
Loss on extinguishments of debt |  |  |  |  |  | $ 4.2 |  |  |  |  | $ 6.1 | $ 0.0 | $ 59.7
Tax Cuts And Jobs Act Of 2017, increase (decrease) in net income |  |  |  |  |  |  | $ (5.8) | $ 0.8 | $ 5.3 | $ 166.0 |  |  |
2017 French Finance Bills which increased (decreased) net income |  |  |  |  |  |  |  |  |  |  |  | 52.1 |
Impairment of intangible assets, finite-lived |  |  |  |  |  |  |  |  |  |  | $ 0.0 | $ 75.0 | $ 0.0
Trademarks and tradenames |  |  |  |  |  |  |  |  |  |  |  |  |
Effect of Fourth Quarter Events [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |
Impairment of intangible assets, finite-lived |  |  |  |  |  |  |  | 14.5 |  |  |  |  |
French Parliament |  |  |  |  |  |  |  |  |  |  |  |  |
Effect of Fourth Quarter Events [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |
2017 French Finance Bills which increased (decreased) net income |  |  |  |  |  |  | $ (1.4) | $ (0.1) | $ (3.7) | $ 17.3 |  |  |
Common Stock | Merger Sub |  |  |  |  |  |  |  |  |  |  |  |  |
Effect of Fourth Quarter Events [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |
Consideration paid (in shares) | 34,612,847 | 34,612,847 |  |  |  |  |  |  |  |  | 34,613,000 |  |

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