| Cover Page | Sep. 01, 2021 |
| Document Information [Line Items] | |
| Document Type | 8-K |
| Document Period End Date | Sep. 1, 2021 |
| Entity Registrant Name | UGI Corp |
| Entity Incorporation, State or Country Code | PA |
| Entity File Number | 1-11071 |
| Entity Tax Identification Number | 23-2668356 |
| Entity Address, Address Line One | 460 North Gulph Road |
| Entity Address, City or Town | King of Prussia |
| Entity Address, State or Province | PA |
| Entity Address, Postal Zip Code | 19406 |
| City Area Code | 610 |
| Local Phone Number | 337-1000 |
| Written Communications | false |
| Soliciting Material | false |
| Pre-commencement Tender Offer | false |
| Pre-commencement Issuer Tender Offer | false |
| Entity Emerging Growth Company | false |
| Entity Central Index Key | 0000884614 |
| Amendment Flag | false |
| Capital Units | |
| Document Information [Line Items] | |
| Title of 12(b) Security | Corporate Units |
| Trading Symbol | UGIC |
| Security Exchange Name | NYSE |
| Common Stock | |
| Document Information [Line Items] | |
| Title of 12(b) Security | Common Stock, without par value |
| Trading Symbol | UGI |
| Security Exchange Name | NYSE |
