| Sep 30, 2010 | Sep 30, 2011 | Sep 30, 2012 | Sep 30, 2013 | Sep 30, 2014 | Sep 30, 2015 | Sep 30, 2016 | Sep 30, 2017 | Sep 30, 2018 | Sep 30, 2019 | Sep 30, 2020 | Sep 30, 2021 | Sep 30, 2022 | Sep 30, 2023 | Sep 30, 2024 |
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| Net income (loss) including noncontrolling interests | 356 | 308 | 187 | 428 | 533 | 414 | 489 | 524 | 822 | 308 | 532 | 1,467 | 1,074 | -1,502 | 269 |
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| Depreciation and amortization | 210 | 228 | 316 | 363 | 363 | 374 | 401 | 416 | 455 | 448 | 484 | 502 | 518 | 532 | 551 |
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| Deferred Income Taxes and Tax Credits | - | - | - | - | - | - | - | - | - | -43 | 146 | 478 | 221 | -420 | 52 |
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| Provision for uncollectible accounts | 27 | 20 | 27 | 30 | 44 | 32 | 22 | 31 | 36 | 29 | 32 | 36 | 61 | 69 | 61 |
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| Changes in unrealized gains and losses on derivative instruments | - | - | - | 0 | -19 | -119 | 92 | 82 | 133 | -258 | 81 | 1,398 | 648 | -1,682 | -10 |
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| Loss on disposals of businesses | - | - | - | - | - | - | - | - | - | - | - | - | - | -221 | -95 |
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| Impairment of assets | - | - | - | - | - | - | - | - | - | - | - | - | - | 19 | 7 |
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| Impairment of goodwill | - | - | - | - | - | - | - | - | - | - | - | - | - | 656 | 195 |
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| Equity-based compensation expense | 13 | 16 | 15 | 18 | 26 | 29 | 24 | 19 | 23 | 18 | 15 | 21 | 15 | 17 | 8 |
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| Loss on extinguishments of debt | - | -38 | -13 | - | - | - | -49 | -60 | - | -6 | - | - | -11 | -9 | -9 |
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| Loss (income) from equity investees | -2 | -1 | -0 | -0 | -0 | -1 | -0 | 4 | 4 | 9 | 27 | -63 | -14 | 2 | -19 |
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| Settlement of Energy Services interest rate swap, net of amortization | - | - | - | - | - | - | - | - | - | - | - | - | - | -19 | 19 |
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| Gain on sales of fixed assets | - | - | - | - | - | - | - | - | - | - | - | - | - | 61 | 22 |
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| Other, net | - | 7 | 11 | 41 | 38 | 10 | 7 | -44 | -11 | -9 | 6 | -31 | -3 | -19 | 20 |
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| Accounts receivable and accrued utility revenues | 95 | 66 | -65 | 111 | -18 | -163 | -37 | 104 | 148 | -83 | 18 | 233 | 431 | -212 | -126 |
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| Income taxes receivable | - | - | - | - | - | - | - | - | - | - | 80 | 48 | - | -91 | 21 |
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| Inventories | -34 | 41 | -89 | -5 | 65 | -181 | -29 | 65 | 37 | -84 | 5 | 231 | 224 | -247 | -32 |
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| Utility deferred fuel costs, net of changes in unsettled derivatives | 19 | -13 | 2 | -9 | 18 | -52 | 23 | 15 | -31 | 30 | -17 | 22 | 24 | -64 | 7 |
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| Accounts payable | 47 | 19 | -79 | 39 | 4 | -135 | -40 | 50 | 65 | -97 | 3 | 366 | 85 | -291 | -99 |
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| Derivative instruments collateral paid | - | - | - | - | - | - | - | - | - | -41 | 22 | 472 | -9 | -420 | -9 |
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| Other current assets | 9 | 2 | - | - | - | - | - | - | - | -45 | -38 | 10 | -54 | 36 | -6 |
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| Other current liabilities | - | -66 | 23 | -22 | 56 | -44 | 48 | 3 | -19 | 9 | -51 | -13 | -4 | -18 | -61 |
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| Net cash provided by operating activities | 599 | 555 | 708 | 802 | 1,005 | 1,164 | 970 | 964 | 1,085 | 1,078 | 1,102 | 1,481 | 716 | 1,107 | 1,182 |
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| Expenditures for property, plant and equipment | 347 | 361 | 339 | 486 | 457 | 491 | 564 | 639 | 574 | 705 | 655 | 690 | 804 | 974 | 796 |
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| Acquisitions of businesses and assets, net of cash and restricted cash acquired | 83 | 53 | 1,581 | 79 | 37 | 448 | 61 | 102 | 187 | 1,362 | 16 | 397 | 242 | 9 | - |
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| Investments in equity method investees | - | - | - | - | - | - | - | - | - | - | - | 65 | 47 | 146 | 92 |
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| Settlements of net investment hedges | - | - | - | - | - | - | - | - | - | - | - | - | 26 | 22 | 3 |
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| Net proceeds from the disposition of businesses and assets | - | - | - | - | - | - | - | - | - | - | - | - | - | 30 | 93 |
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| Other, net | 8 | 20 | -1 | -17 | -15 | -15 | -13 | 29 | -13 | -11 | -22 | -39 | -55 | - | - |
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| Net cash used by investing activities | -399 | -415 | -1,904 | -553 | -488 | -976 | -559 | -763 | -748 | -2,055 | -649 | -1,113 | -1,012 | -1,077 | -792 |
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| Dividends on UGI Common Stock | 99 | 114 | 119 | 126 | 136 | 154 | 161 | 169 | 177 | 200 | 273 | 282 | 296 | 308 | 318 |
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| Issuances of debt, net of issuance costs | - | 1,481 | 1,550 | 227 | 175 | 660 | 1,630 | 1,307 | 124 | 2,412 | 209 | 656 | 1,257 | 1,930 | 1,321 |
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| Repayments of debt and finance leases, including redemption premiums | - | - | - | - | - | - | - | - | - | - | - | 405 | 978 | 2,031 | 1,303 |
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| Receivables Facility net (repayments) borrowings | - | 2 | -14 | 30 | -22 | 12 | 6 | 14 | -37 | 44 | -27 | -19 | - | 46 | -46 |
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| (Decrease) increase in short-term borrowings | 38 | -75 | 42 | 32 | 6 | -32 | 96 | 61 | 94 | 327 | -422 | -16 | 1 | 221 | -148 |
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| Issuances of UGI Common Stock | 28 | 27 | 23 | 36 | 11 | 12 | 14 | 11 | 35 | 17 | 2 | 19 | 19 | 12 | - |
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| Repurchases of UGI Common Stock | - | - | - | - | 40 | 34 | 48 | 43 | 60 | 17 | 38 | - | 38 | 22 | - |
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| Payments on Purchase Contracts | - | - | - | - | - | - | - | - | - | - | - | - | 16 | 16 | 12 |
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| Net cash used by financing activities | -214 | -152 | 1,279 | -186 | -476 | -217 | -275 | -147 | -438 | 1,042 | -635 | 166 | -51 | -168 | -506 |
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| Effect of exchange rate changes on cash, cash equivalents and restricted cash | - | - | - | - | - | - | - | - | - | -16 | 28 | -14 | -61 | 9 | 4 |
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| Cash, cash equivalents and restricted cash decrease | - | - | - | - | - | - | - | - | - | 49 | -154 | 520 | -408 | -129 | -112 |
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| Cash, cash equivalents and restricted cash decrease | - | - | - | - | - | - | - | - | - | 49 | -154 | 520 | -408 | -129 | -112 |
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| Interest | - | - | - | - | - | - | - | - | - | 248 | 311 | 297 | 320 | 332 | 403 |
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| Income taxes | - | - | - | - | - | - | - | - | - | - | - | - | - | -17 | 80 |
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