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Condensed Consolidated Balance Sheets (unaudited) (Parenthetical) (USD $) In Millions, except Share data, unless otherwise specified | Dec. 31, 2012 | Sep. 30, 2012 | Dec. 31, 2011
--- | --- | --- | ---
Accounts receivable, allowances for doubtful accounts | $ 39.9 | $ 36.1 | $ 38.4
Property, plant and equipment, accumulated depreciation and amortization | $ 2,359.1 | $ 2,286.0 | $ 2,113.8
UGI Common Stock, without par value (in dollars per share) |  |  |
UGI Common Stock, without par value, shares authorized (in shares) | 300,000,000 | 300,000,000 | 300,000,000
UGI Common Stock, without par value, shares issued (in shares) | 115,644,794 | 115,624,594 | 115,507,094

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