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Debt (Details)
Jun. 27, 2019
USD ($)
Jun. 26, 2019
USD ($)
Feb. 01, 2019
USD ($)
2019 Credit Agreement      
Debt Instrument [Line Items]      
Debt instrument, covenant terms, consolidated debt to consolidated total capital ratio 0.65    
Line of Credit | 2019 Credit Agreement      
Debt Instrument [Line Items]      
Credit limit $ 350,000,000    
Additional borrowing amount $ 150,000,000    
UGI Utilities | Senior Notes | 4.55% Senior Notes due February 2049      
Debt Instrument [Line Items]      
Aggregate principal amount     $ 150,000,000
Debt instrument, interest rate, stated percentage     4.55%
Debt instrument, covenant terms, consolidated debt to consolidated total capital ratio     0.65
Minimum | Line of Credit | 2019 Credit Agreement      
Debt Instrument [Line Items]      
Margin on borrowing 0.00%    
Maximum | Line of Credit | 2019 Credit Agreement      
Debt Instrument [Line Items]      
Margin on borrowing 1.75%    
Letter of Credit | Line of Credit | 2019 Credit Agreement      
Debt Instrument [Line Items]      
Credit limit $ 100,000,000    
Revolving Credit Facility | Line of Credit | UGI Utilities International Credit Agreement      
Debt Instrument [Line Items]      
Credit limit   $ 450,000,000