Intangible Assets and Goodwill (Schedule Of Intangible Assets) (Details) - USD ($) $ in Thousands |
May. 31, 2015 |
Nov. 30, 2014 |
|---|---|---|
| Finite-Lived Intangible Assets [Line Items] | ||
| Gross Carrying Amount | $ 201,095 | $ 78,473 |
| Accumulated Amortization | (72,490) | (57,895) |
| Net Book Value | 128,605 | 20,578 |
| Purchased technology [Member] | ||
| Finite-Lived Intangible Assets [Line Items] | ||
| Gross Carrying Amount | 118,148 | 53,789 |
| Accumulated Amortization | (47,842) | (39,575) |
| Net Book Value | 70,306 | 14,214 |
| Customer-related and other [Member] | ||
| Finite-Lived Intangible Assets [Line Items] | ||
| Gross Carrying Amount | 67,617 | 20,554 |
| Accumulated Amortization | (20,329) | (15,195) |
| Net Book Value | 47,288 | 5,359 |
| Trademarks and trade names [Member] | ||
| Finite-Lived Intangible Assets [Line Items] | ||
| Gross Carrying Amount | 15,330 | 4,130 |
| Accumulated Amortization | (4,319) | (3,125) |
| Net Book Value | $ 11,011 | $ 1,005 |