Supplemental Financial Statement Information Supplemental financial statement information (Property, Plant, and Equipment) (Details) - USD ($) $ in Thousands | 6 Months Ended | |
Jan. 31, 2016 | Jul. 31, 2015 |
Property, Plant and Equipment, Gross | $ 1,621,115 | $ 1,603,383 |
Property, plant and equipment accumulated depreciation | 654,120 | 638,166 |
Property, plant and equipment, net | $ 966,995 | 965,217 |
Land [Member] | | |
Property, Plant and Equipment, Estimated Useful Lives | Indefinite | |
Property, Plant and Equipment, Gross | $ 35,581 | 34,389 |
Land Improvements [Member] | | |
Property, Plant and Equipment, Gross | 13,441 | 13,249 |
Building Improvements [Member] | | |
Property, Plant and Equipment, Gross | $ 72,248 | 71,923 |
Property, Plant and Equipment, Useful Life | 20 years | |
Vehicles [Member] | | |
Property, Plant and Equipment, Gross | $ 213,038 | 228,646 |
Bulk Equipment And District Facilities [Member] | | |
Property, Plant and Equipment, Gross | 111,669 | 111,657 |
Tanks Cylinders And Customer Equipment [Member] | | |
Property, Plant and Equipment, Gross | 768,720 | 772,904 |
Salt water disposal wells [Member] | | |
Property, Plant and Equipment, Gross | 52,095 | 38,460 |
Rail cars [Member] | | |
Property, Plant and Equipment, Gross | $ 173,513 | 150,235 |
Property, Plant and Equipment, Useful Life | 30 years | |
Office Equipment [Member] | | |
Property, Plant and Equipment, Gross | $ 121,055 | 123,386 |
Injection stations [Member] | | |
Property, Plant and Equipment, Gross | $ 32,178 | 37,619 |
Property, Plant and Equipment, Useful Life | 20 years | |
Construction in Progress [Member] | | |
Property, Plant and Equipment, Gross | $ 23,503 | 16,841 |
Pipelines [Member] | | |
Property, Plant and Equipment, Gross | $ 4,074 | 4,074 |
Property, Plant and Equipment, Useful Life | 15 years | |
Minimum [Member] | Land Improvements [Member] | | |
Property, Plant and Equipment, Useful Life | 2 years | |
Minimum [Member] | Vehicles [Member] | | |
Property, Plant and Equipment, Useful Life | 8 years | |
Minimum [Member] | Bulk Equipment And District Facilities [Member] | | |
Property, Plant and Equipment, Useful Life | 5 years | |
Minimum [Member] | Tanks Cylinders And Customer Equipment [Member] | | |
Property, Plant and Equipment, Useful Life | 2 years | |
Minimum [Member] | Salt water disposal wells [Member] | | |
Property, Plant and Equipment, Useful Life | 2 years | |
Minimum [Member] | Office Equipment [Member] | | |
Property, Plant and Equipment, Useful Life | 2 years | |
Maximum [Member] | Land Improvements [Member] | | |
Property, Plant and Equipment, Useful Life | 20 years | |
Maximum [Member] | Vehicles [Member] | | |
Property, Plant and Equipment, Useful Life | 20 years | |
Maximum [Member] | Bulk Equipment And District Facilities [Member] | | |
Property, Plant and Equipment, Useful Life | 30 years | |
Maximum [Member] | Tanks Cylinders And Customer Equipment [Member] | | |
Property, Plant and Equipment, Useful Life | 30 years | |
Maximum [Member] | Salt water disposal wells [Member] | | |
Property, Plant and Equipment, Useful Life | 23 years | |
Maximum [Member] | Office Equipment [Member] | | |
Property, Plant and Equipment, Useful Life | 5 years | |
Ferrellgas, L.P. [Member] | | |
Property, Plant and Equipment, Gross | $ 1,621,115 | 1,603,383 |
Property, plant and equipment accumulated depreciation | 654,120 | 638,166 |
Property, plant and equipment, net | $ 966,995 | 965,217 |
Ferrellgas, L.P. [Member] | Land [Member] | | |
Property, Plant and Equipment, Estimated Useful Lives | Indefinite | |
Property, Plant and Equipment, Gross | $ 35,581 | 34,389 |
Ferrellgas, L.P. [Member] | Land Improvements [Member] | | |
Property, Plant and Equipment, Gross | 13,441 | 13,249 |
Ferrellgas, L.P. [Member] | Building Improvements [Member] | | |
Property, Plant and Equipment, Gross | $ 72,248 | 71,923 |
Property, Plant and Equipment, Useful Life | 20 years | |
Ferrellgas, L.P. [Member] | Vehicles [Member] | | |
Property, Plant and Equipment, Gross | $ 213,038 | 228,646 |
Ferrellgas, L.P. [Member] | Bulk Equipment And District Facilities [Member] | | |
Property, Plant and Equipment, Gross | 111,669 | 111,657 |
Ferrellgas, L.P. [Member] | Tanks Cylinders And Customer Equipment [Member] | | |
Property, Plant and Equipment, Gross | 768,720 | 772,904 |
Ferrellgas, L.P. [Member] | Salt water disposal wells [Member] | | |
Property, Plant and Equipment, Gross | 52,095 | 38,460 |
Ferrellgas, L.P. [Member] | Rail cars [Member] | | |
Property, Plant and Equipment, Gross | $ 173,513 | 150,235 |
Property, Plant and Equipment, Useful Life | 30 years | |
Ferrellgas, L.P. [Member] | Office Equipment [Member] | | |
Property, Plant and Equipment, Gross | $ 121,055 | 123,386 |
Ferrellgas, L.P. [Member] | Injection stations [Member] | | |
Property, Plant and Equipment, Gross | $ 32,178 | 37,619 |
Property, Plant and Equipment, Useful Life | 20 years | |
Ferrellgas, L.P. [Member] | Construction in Progress [Member] | | |
Property, Plant and Equipment, Gross | $ 23,503 | 16,841 |
Ferrellgas, L.P. [Member] | Pipelines [Member] | | |
Property, Plant and Equipment, Gross | $ 4,074 | $ 4,074 |
Property, Plant and Equipment, Useful Life | 15 years | |
Ferrellgas, L.P. [Member] | Minimum [Member] | Land Improvements [Member] | | |
Property, Plant and Equipment, Useful Life | 2 years | |
Ferrellgas, L.P. [Member] | Minimum [Member] | Vehicles [Member] | | |
Property, Plant and Equipment, Useful Life | 8 years | |
Ferrellgas, L.P. [Member] | Minimum [Member] | Bulk Equipment And District Facilities [Member] | | |
Property, Plant and Equipment, Useful Life | 5 years | |
Ferrellgas, L.P. [Member] | Minimum [Member] | Tanks Cylinders And Customer Equipment [Member] | | |
Property, Plant and Equipment, Useful Life | 2 years | |
Ferrellgas, L.P. [Member] | Minimum [Member] | Salt water disposal wells [Member] | | |
Property, Plant and Equipment, Useful Life | 2 years | |
Ferrellgas, L.P. [Member] | Minimum [Member] | Office Equipment [Member] | | |
Property, Plant and Equipment, Useful Life | 2 years | |
Ferrellgas, L.P. [Member] | Maximum [Member] | Land Improvements [Member] | | |
Property, Plant and Equipment, Useful Life | 20 years | |
Ferrellgas, L.P. [Member] | Maximum [Member] | Vehicles [Member] | | |
Property, Plant and Equipment, Useful Life | 20 years | |
Ferrellgas, L.P. [Member] | Maximum [Member] | Bulk Equipment And District Facilities [Member] | | |
Property, Plant and Equipment, Useful Life | 30 years | |
Ferrellgas, L.P. [Member] | Maximum [Member] | Tanks Cylinders And Customer Equipment [Member] | | |
Property, Plant and Equipment, Useful Life | 30 years | |
Ferrellgas, L.P. [Member] | Maximum [Member] | Salt water disposal wells [Member] | | |
Property, Plant and Equipment, Useful Life | 23 years | |
Ferrellgas, L.P. [Member] | Maximum [Member] | Office Equipment [Member] | | |
Property, Plant and Equipment, Useful Life | 5 years | |