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Segment Information - Disclosure by Reportable Segment and Reconciliation of Total Operating Segment Information (Details) - USD ($) $ in Thousands | 12 Months Ended
--- | ---
Sep. 28, 2019 | Sep. 29, 2018 | Sep. 30, 2017
Revenues [Abstract] |  |  |
Total revenues | $ 1,267,705 | $ 1,344,413 | $ 1,187,886
Operating income (loss): |  |  |
Total operating income | 150,854 | 158,003 | 128,595
Reconciliation to net income: |  |  |
Loss on debt extinguishment | 0 | 0 | 1,567
Interest expense, net | 76,663 | 77,383 | 75,263
Other, net | 4,702 | 4,692 | 13,311
Provision for (benefit from) income taxes | 857 | (606) | 459
Net income | 68,632 | 76,534 | 37,995
Depreciation and amortization [Abstract] |  |  |
Total depreciation and amortization | 120,872 | 125,222 | 127,938
Assets [Abstract] |  |  |
Total assets | 1,998,348 | 2,101,199 |
Operating/Reportable Segments [Member] | Propane [Member] |  |  |
Revenues [Abstract] |  |  |
Total revenues | 1,083,446 | 1,153,323 | 1,011,078
Operating income (loss): |  |  |
Total operating income | 254,447 | 248,473 | 218,346
Depreciation and amortization [Abstract] |  |  |
Total depreciation and amortization | 108,763 | 111,460 | 111,374
Assets [Abstract] |  |  |
Total assets | 1,904,344 | 1,995,060 |
Operating/Reportable Segments [Member] | Fuel Oil and Refined Fuels [Member] |  |  |
Revenues [Abstract] |  |  |
Total revenues | 92,084 | 91,520 | 78,126
Operating income (loss): |  |  |
Total operating income | 8,489 | 7,605 | 8,552
Depreciation and amortization [Abstract] |  |  |
Total depreciation and amortization | 2,083 | 2,574 | 2,610
Assets [Abstract] |  |  |
Total assets | 44,279 | 47,911 |
Operating/Reportable Segments [Member] | Natural Gas and Electricity [Member] |  |  |
Revenues [Abstract] |  |  |
Total revenues | 45,206 | 54,308 | 55,103
Operating income (loss): |  |  |
Total operating income | 8,758 | 12,309 | 13,826
Depreciation and amortization [Abstract] |  |  |
Total depreciation and amortization | 0 | 0 | 0
Assets [Abstract] |  |  |
Total assets | 11,907 | 13,067 |
Operating/Reportable Segments [Member] | All Other [Member] |  |  |
Revenues [Abstract] |  |  |
Total revenues | 46,969 | 45,262 | 43,579
Operating income (loss): |  |  |
Total operating income | (19,516) | (20,145) | (23,017)
Depreciation and amortization [Abstract] |  |  |
Total depreciation and amortization | 196 | 215 | 283
Assets [Abstract] |  |  |
Total assets | 2,950 | 3,363 |
Operating/Reportable Segments [Member] | Corporate [Member] |  |  |
Operating income (loss): |  |  |
Total operating income | (101,324) | (90,239) | (89,112)
Depreciation and amortization [Abstract] |  |  |
Total depreciation and amortization | 9,830 | 10,973 | $ 13,671
Assets [Abstract] |  |  |
Total assets | $ 34,868 | $ 41,798 |

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