v3.25.1
Segment Information - Schedule of Segment Reporting Information (Details) - USD ($)
$ in Millions
 3 Months Ended 6 Months Ended
Mar. 31, 2025
Mar. 31, 2024
Mar. 31, 2025
Mar. 31, 2024
Sep. 30, 2024
Segment Reporting Information [Line Items]          
Revenues $ 2,666 $ 2,467 $ 4,696 $ 4,588  
Cost of sales 1,301 1,030 2,224 2,232  
Operating income (loss) 700 717 1,187 949  
Income (loss) from equity investees 3 1 6 2  
Other non-operating income (expense), net (7) 11 22 (2)  
Earnings (loss) before interest expense and income taxes 696 729 1,215 949  
Interest expense (102) (100) (204) (200)  
Income before income taxes 594 629 1,011 749  
Depreciation and amortization 138 138 276 275  
Capital expenditures (including the effects of accruals) 160 167 335 300  
Total assets 15,746 15,624 15,746 15,624 $ 15,098
Eliminations          
Segment Reporting Information [Line Items]          
Revenues (190) (131) (276) (211)  
Cost of sales (190) (131) (276) (211)  
Operating income (loss) (4) 1 (3) 0  
Income (loss) from equity investees 0 0 0 0  
Other non-operating income (expense), net 0 0 0 0  
Earnings (loss) before interest expense and income taxes (4) 1 (3) 0  
Interest expense 3 0 3 0  
Income before income taxes (1) 1 0 0  
Depreciation and amortization 0 0 0 0  
Capital expenditures (including the effects of accruals) 0 0 0 0  
Total assets (366) (131) (366) (131)  
Eliminations | Utilities          
Segment Reporting Information [Line Items]          
Revenues 46 23 61 36  
Eliminations | Midstream & Marketing          
Segment Reporting Information [Line Items]          
Revenues 144 108 215 175  
Eliminations | UGI International          
Segment Reporting Information [Line Items]          
Revenues 0 0 0 0  
Eliminations | AmeriGas Propane          
Segment Reporting Information [Line Items]          
Revenues 0 0 0 0  
Operating Segments | Utilities          
Segment Reporting Information [Line Items]          
Revenues 773 646 1,258 1,139  
Revenues from external customers 727 623 1,197 1,103  
Cost of sales 378 274 582 495  
Operating income (loss) 240 225 378 359  
Income (loss) from equity investees 0 0 0 0  
Other non-operating income (expense), net 1 1 4 2  
Earnings (loss) before interest expense and income taxes 241 226 382 361  
Interest expense (25) (24) (51) (47)  
Income before income taxes 216 202 331 314  
Depreciation and amortization 44 41 88 82  
Capital expenditures (including the effects of accruals) 100 91 206 173  
Total assets 6,261 5,850 6,261 5,850  
Operating Segments | Midstream & Marketing          
Segment Reporting Information [Line Items]          
Revenues 587 483 954 877  
Revenues from external customers 443 375 739 702  
Cost of sales 385 283 614 522  
Operating income (loss) 151 151 242 250  
Income (loss) from equity investees 3 2 7 5  
Other non-operating income (expense), net 0 0 0 0  
Earnings (loss) before interest expense and income taxes 154 153 249 255  
Interest expense (12) (9) (24) (20)  
Income before income taxes 142 144 225 235  
Depreciation and amortization 20 22 40 44  
Capital expenditures (including the effects of accruals) 27 33 59 52  
Total assets 3,378 3,204 3,378 3,204  
Operating Segments | UGI International          
Segment Reporting Information [Line Items]          
Revenues 650 673 1,288 1,398  
Cost of sales 348 368 722 814  
Operating income (loss) 139 124 245 237  
Income (loss) from equity investees 0 (1) (1) (3)  
Other non-operating income (expense), net 4 8 9 14  
Earnings (loss) before interest expense and income taxes 143 131 253 248  
Interest expense (11) (11) (21) (22)  
Income before income taxes 132 120 232 226  
Depreciation and amortization 29 29 58 59  
Capital expenditures (including the effects of accruals) 17 19 31 31  
Total assets 3,171 3,030 3,171 3,030  
Operating Segments | AmeriGas Propane          
Segment Reporting Information [Line Items]          
Revenues 848 795 1,475 1,424  
Cost of sales 402 362 682 645  
Operating income (loss) 154 138 228 209  
Income (loss) from equity investees 0 0 0 0  
Other non-operating income (expense), net 0 0 0 0  
Earnings (loss) before interest expense and income taxes 154 138 228 209  
Interest expense (37) (40) (70) (81)  
Income before income taxes 117 98 158 128  
Depreciation and amortization 45 44 90 88  
Capital expenditures (including the effects of accruals) 16 24 39 44  
Total assets 3,110 3,467 3,110 3,467  
Corporate & Other          
Segment Reporting Information [Line Items]          
Revenues from external customers (2) 1 (3) (39)  
Cost of sales (22) (126) (100) (33)  
Operating income (loss) 20 78 97 (106)  
Income (loss) from equity investees 0 0 0 0  
Other non-operating income (expense), net (12) 2 9 (18)  
Earnings (loss) before interest expense and income taxes 8 80 106 (124)  
Interest expense (20) (16) (41) (30)  
Income before income taxes (12) 64 65 (154)  
Depreciation and amortization 0 2 0 2  
Capital expenditures (including the effects of accruals) 0 0 0 0  
Total assets 192 204 192 204  
Intersegment revenues Corporate & Other          
Segment Reporting Information [Line Items]          
Revenues $ 0 $ 0 $ 0 $ 0