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Common Stock And Equity Based Compensation - AmeriGas Common Unit Based Awards in Common Units and Cash (Details) - USD ($) $ in Millions | 12 Months Ended
--- | ---
Sep. 30, 2015 | Sep. 30, 2014 | Sep. 30, 2013
AmeriGas Performance Unit |  |  |
Share-based Compensation Arrangement by Share-based Payment Award |  |  |
Number of Common Units subject to original awards granted | 55,750 | 41,251 | 48,150
Fiscal year granted | 2012 | 2011 | 2010
Payment of awards: |  |  |
AmeriGas Partners Common Units issued | 0 | 0 | 0
Cash paid | $ 0.0 | $ 0.0 | $ 0.0
AmeriGas Partners Common Units |  |  |
Share-based Compensation Arrangement by Share-based Payment Award |  |  |
Number of Common Units subject to original awards granted | 42,532 | 72,023 | 35,934
Payment of awards: |  |  |
AmeriGas Partners Common Units issued | 21,509 | 40,842 | 23,192
Cash paid | $ 0.8 | $ 1.4 | $ 0.6

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