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Segment Information - Reconciliation of Partnership Adjusted EBITDA (Details) - USD ($) $ in Millions | 3 Months Ended
--- | ---
Dec. 31, 2017 | Dec. 31, 2016
Segment Reporting Information |  |
Depreciation and amortization | $ (110.3) | $ (98.1)
Interest expense | (58.2) | (55.4)
Loss on extinguishments of debt | 0.0 | (33.2)
Income (loss) before income taxes | $ 329.8 | $ 378.7
Amerigas Propane | AmeriGas OLP |  |
Segment Reporting Information |  |
General Partnership interest (percentage) | 1.01% | 1.01%
Operating Segments | Amerigas Propane |  |
Segment Reporting Information |  |
Partnership Adjusted EBITDA | $ 194.1 | $ 185.1
Depreciation and amortization | (47.4) | (44.6)
Interest expense | (40.6) | (40.0)
Loss on extinguishments of debt | 0.0 | (33.2)
Noncontrolling interest | 1.2 | 1.4
Income (loss) before income taxes | $ 107.3 | $ 68.7

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