Annual report pursuant to Section 13 and 15(d)

Selected Quarterly Financial Information (Unaudited) (Details 1)

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Selected Quarterly Financial Information (Unaudited) (Details 1) (USD $)
In Millions, unless otherwise specified
 3 Months Ended 12 Months Ended
Feb. 28, 2014
Nov. 30, 2013
Aug. 31, 2013
May 31, 2013
Feb. 28, 2013
Nov. 30, 2012
Aug. 31, 2012
May 31, 2012
Feb. 28, 2014
Feb. 28, 2013
Summary of unusual items, net of income tax effect                    
Amortization of favorable interim supply agreement $ 1.2 $ 1.6 $ 1.5 $ 0         $ 4.3  
Other cost of product sold (0.6) 0 0 0         (0.6)  
Transaction and related costs associated with pending and completed acquisitions 4.3 5.8 4.2 17.2 7.1 5.3 5.7 0 31.5 18.1
Deferred compensation 0 0 0 4.4         4.4  
Restructuring charges and other selling, general and administrative costs 0 0.1 0 (1.8) (6.4) 1.5 (0.3) 1.8 (1.7) (3.4)
Impairment of goodwill and intangible assets 0 (1.3) 296.4 0         295.1  
Gain on remeasurement to fair value of equity method investment 0 0 (1,642.0) 0         (1,642.0)  
Other equity method investment costs 0 0 0 0.1 0.5 0.1 0 0 0.1 0.6
Loss on write-off of financing costs         $ 6.1 $ 0 $ 0 $ 1.7   $ 7.8