Supplemental Financial Statement Information Supplemental financial statement information (Assets Held for Sale) (Details) - USD ($)
$ in Thousands |
3 Months Ended |
6 Months Ended |
Jan. 31, 2016 |
Jan. 31, 2015 |
Jan. 31, 2016 |
Jan. 31, 2015 |
| Long Lived Assets Held-for-sale [Line Items] |
|
|
|
|
| Impairment of Long-Lived Assets to be Disposed of |
$ 0
|
$ 0
|
$ 12,112
|
$ 0
|
| Loss on Disposal of Assets and Asset Impairment Charges |
2,524
|
1,414
|
17,441
|
2,375
|
| Assets held for disposal [Member] |
|
|
|
|
| Long Lived Assets Held-for-sale [Line Items] |
|
|
|
|
| Gain (Loss) on Disposition of Property Plant Equipment |
(468)
|
0
|
791
|
0
|
| Assets held in use [Member] |
|
|
|
|
| Long Lived Assets Held-for-sale [Line Items] |
|
|
|
|
| Gain (Loss) on Disposition of Property Plant Equipment |
2,992
|
1,414
|
4,538
|
2,375
|
| Ferrellgas, L.P. [Member] |
|
|
|
|
| Long Lived Assets Held-for-sale [Line Items] |
|
|
|
|
| Impairment of Long-Lived Assets to be Disposed of |
0
|
0
|
12,112
|
0
|
| Loss on Disposal of Assets and Asset Impairment Charges |
2,524
|
1,414
|
17,441
|
2,375
|
| Ferrellgas, L.P. [Member] | Assets held for disposal [Member] |
|
|
|
|
| Long Lived Assets Held-for-sale [Line Items] |
|
|
|
|
| Gain (Loss) on Disposition of Property Plant Equipment |
(468)
|
0
|
791
|
0
|
| Ferrellgas, L.P. [Member] | Assets held in use [Member] |
|
|
|
|
| Long Lived Assets Held-for-sale [Line Items] |
|
|
|
|
| Gain (Loss) on Disposition of Property Plant Equipment |
$ 2,992
|
$ 1,414
|
$ 4,538
|
$ 2,375
|