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Equity-Based Compensation Textual (Details) (USD $)
In Thousands, except Share data, unless otherwise specified
12 Months Ended
Sep. 30, 2013
Sep. 30, 2012
Sep. 30, 2011
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Nonvested, Number of Equity-based Units 61,331 68,633  
Share Based Compensation Types, Excluding Stock Options [Member] | UGI Omnibus Equity Compensation Plan [Member]
     
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Vesting period 3 years    
Stock Options [Member]
     
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Vesting period 10 years    
Options can be exercised no later than ten years from the grant date    
Performance Unit [Member] | UGI Units and UGI Stock Options [Member]
     
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Allocated share-based compensation expense $ 1,078 $ 783 $ 1,110
Allocated share-based compensation expense, after-tax 631 458 650
Performance Unit [Member] | UGI Units and UGI Stock Options [Member] | Minimum [Member]
     
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Percent of target award paid to grantee 0.00%    
Performance Unit [Member] | UGI Units and UGI Stock Options [Member] | Maximum [Member]
     
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Percent of target award paid to grantee 200.00%    
Performance Unit [Member] | UGI Stock Options [Member]
     
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Nonvested awards, total compensation cost not yet recognized 682    
Nonvested awards, total compensation cost not yet recognized, period for recognition 2 years    
Performance Unit [Member] | UGI Units [Member]
     
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Nonvested awards, total compensation cost not yet recognized 758    
Nonvested awards, total compensation cost not yet recognized, period for recognition 1 year 10 months 24 days    
Nonvested, Number of Equity-based Units 61,331    
Performance Unit [Member] | UGI Units [Member] | Other current liabilities [Member]
     
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Deferred compensation arrangements, liability, current 360    
Performance Unit [Member] | UGI Units [Member] | Other noncurrent liabilities [Member]
     
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Deferred compensation arrangements, liability, classified, noncurrent   $ 143