Acquisitions - Pro Forma Income Statement and Income Per Unit (Details) - USD ($) $ / shares in Units, $ in Millions	12 Months Ended
Sep. 30, 2015	Sep. 30, 2014
Business Combinations [Abstract]
Revenues	$ 7,065.8	$ 8,999.6
Net income attributable to UGI Corporation	$ 341.2	$ 385.5
Earnings per common share attributable to UGI Corporation stockholders:
Basic (in usd per share)	$ 1.97	$ 2.23
Diluted (in usd per share)	$ 1.94	$ 2.20

Business Acquisition Pro Forma Earnings Per Share Basic And Diluted

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- Definition

The pro forma basic net income per share for a period as if the business combination or combinations had been completed at the beginning of a period.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 805

-SubTopic 10

-Section 50

-Paragraph 2

-Subparagraph (h)(2)-(3)

-URI http://asc.fasb.org/extlink&oid=56956515&loc=d3e1392-128463

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The pro forma diluted net income per share for a period as if the business combination or combinations had been completed at the beginning of a period.

+ References

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The pro forma net Income or Loss for the period as if the business combination or combinations had been completed at the beginning of a period.

+ References

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The pro forma revenue for a period as if the business combination or combinations had been completed at the beginning of the period.

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- References

No definition available.

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