Income Taxes (Details) - USD ($) $ in Millions |
1 Months Ended | 6 Months Ended |
|---|---|---|
Dec. 31, 2007 |
Jan. 31, 2015 |
|
| Income Tax Disclosure [Abstract] | ||
| Net Operating Loss Carryforwards Recognized | $ 8.0 | |
| Operating Loss Carryforwards | $ 73.8 | |
| Tax Refund on Amended Returns | 6.2 | |
| Reduction in Federal Tax Liability | 19.6 | |
| Unrecognized Tax Benefits, Period Increase (Decrease) | 27.7 | |
| Tax Adjustments, Settlements, and Unusual Provisions | $ 23.8 |