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Significant Accounting Policies (Tables) | 3 Months Ended
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Dec. 31, 2013
Accounting Policies [Abstract] |
Shares used in computing basic and diluted earnings per share | Shares used in computing basic and diluted earnings per share are as follows:
|  | Three Months Ended December 31,
|  | 2013 |  | 2012
Denominator (thousands of shares): |  |  |  |
Average common shares outstanding for basic computation |  | 114,825 |  |  | 113,136 |
Incremental shares issuable for stock options and awards |  | 1,645 |  |  | 1,354 |
Average common shares outstanding for diluted computation |  | 116,470 |  |  | 114,490 |
Schedule of Changes in Accumulated Other Comprehensive Income [Table Text Block] |
|  |  |  |  | Foreign |  |
|  |  |  |  | Currency |  |
| Postretirement |  | Derivative |  | Translation |  |
| Benefit Plans |  | Instruments |  | Adjustments |  | Total
Balance, September 30, 2013 | $ | (16.4 | ) |  | $ | (26.9 | ) |  | $ | 51.7 |  |  | $ | 8.4 |
Other comprehensive income before reclassification adjustments (after-tax) | — |  |  | 40.5 |  |  | 12.3 |  |  | 52.8 |
Amounts reclassified from AOCI and noncontrolling interests: |  |  |  |  |  |  |
Reclassification adjustments (pre-tax) | 0.3 |  |  | (15.8 | ) |  | — |  |  | (15.5 | )
Reclassification adjustments tax (expense) benefit | 0.1 |  |  | 2.0 |  |  | — |  |  | 2.1 |
Reclassification adjustments (after-tax) | 0.4 |  |  | (13.8 | ) |  | — |  |  | (13.4 | )
Other comprehensive income | 0.4 |  |  | 26.7 |  |  | 12.3 |  |  | 39.4 |
Deduct comprehensive income attributable to noncontrolling interests, principally in AmeriGas Partners | — |  |  | (15.6 | ) |  | — |  |  | (15.6 | )
Other comprehensive income attributable to UGI | 0.4 |  |  | 11.1 |  |  | 12.3 |  |  | 23.8 |
Balance, December 31, 2013 | $ | (16.0 | ) |  | $ | (15.8 | ) |  | $ | 64.0 |  |  | $ | 32.2 |

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- Definition Tabular disclosure of the weighted average number of shares used in calculating basic net earnings per share (or unit) and diluted earnings per share (or unit). + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 260 -SubTopic 10 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6371337&loc=d3e3550-109257 + Details
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