Summary Of Significant Accounting Policies (Significant Cash And Non-Cash Activities) (Details) - USD ($) $ in Thousands |
6 Months Ended | |
|---|---|---|
Jan. 31, 2016 |
Jan. 31, 2015 |
|
| Cash Paid For [Abstract] | ||
| Interest | $ 64,406 | $ 46,440 |
| Income taxes | 5 | 267 |
| Non-Cash Investing Activities [Abstract] | ||
| Noncash or Part Noncash Acquisition, Value of Liabilities Assumed | 426 | 0 |
| Change in accruals for property, plant and equipment additions | 22,860 | 1,216 |
| Ferrellgas, L.P. [Member] | ||
| Cash Paid For [Abstract] | ||
| Interest | 56,558 | 38,591 |
| Income taxes | 0 | 262 |
| Non-Cash Investing Activities [Abstract] | ||
| Noncash or Part Noncash Acquisition, Value of Liabilities Assumed | 426 | 0 |
| Partners' Capital Account, Acquisitions | (284) | |
| Change in accruals for property, plant and equipment additions | 22,860 | $ 1,216 |
| Common Unitholders [Member] | Ferrellgas, L.P. [Member] | ||
| Non-Cash Investing Activities [Abstract] | ||
| Partners' Capital Account, Acquisitions | $ (284) | |