Derivatives Unrecognized hedging losses in AOCI (Details) - USD ($) $ in Millions |
3 Months Ended | 9 Months Ended | ||
|---|---|---|---|---|
Aug. 31, 2016 |
Aug. 31, 2015 |
Aug. 31, 2016 |
Aug. 31, 2015 |
|
| Hedging activities in AOCI [Roll Forward] | ||||
| Beginning balance | $ (191.2) | |||
| Unrealized loss on hedging activities | $ (5.2) | $ (0.9) | (6.9) | $ (3.9) |
| Ending balance | (218.8) | (218.8) | ||
| Interest Rate Swap [Member] | ||||
| Hedging activities in AOCI [Roll Forward] | ||||
| Unrealized loss on hedging activities | (6.5) | (1.1) | (10.9) | (4.6) |
| Loss reclassified from AOCI into income | 1.5 | 0.5 | 4.4 | 1.0 |
| Foreign currency forward cash flow hedge [Member] | ||||
| Hedging activities in AOCI [Roll Forward] | ||||
| Unrealized loss on hedging activities | (0.2) | 0.1 | (0.2) | 0.9 |
| Accumulated Net Gain (Loss) from Designated or Qualifying Cash Flow Hedges [Member] | ||||
| Hedging activities in AOCI [Roll Forward] | ||||
| Beginning balance | (16.3) | (12.5) | (14.6) | (9.5) |
| Unrealized loss on hedging activities | (11.1) | |||
| Loss reclassified from AOCI into income | 4.2 | |||
| Ending balance | $ (21.5) | $ (13.4) | $ (21.5) | $ (13.4) |