Quarterly report pursuant to Section 13 or 15(d)

Business Segment Information (Details)

v3.5.0.1
Business Segment Information (Details) - USD ($)
$ in Millions
 3 Months Ended
May 31, 2016
May 31, 2015
Cost of product sold    
Net gain (loss) on undesignated commodity derivative contracts $ 2.6 $ (9.3)
Amortization of favorable interim supply agreement (4.2) (11.7)
Total cost of product sold (990.5) (894.2)
Selling, general and administrative expenses    
Total selling, general and administrative expenses (328.6) (309.8)
Comparable Adjustments [Member]    
Cost of product sold    
Flow through of inventory step-up (8.1) 0.0
Amortization of favorable interim supply agreement (2.2) (8.9)
Total cost of product sold 11.1 (8.6)
Selling, general and administrative expenses    
Costs associated with a potential initial public offering (3.7) 0.0
Transaction, integration and other acquisition-related costs (2.3) (5.3)
Restructuring and related charges (1.1) (13.0)
Total selling, general and administrative expenses (7.1) (18.3)
Comparable Adjustments, Operating income (loss) 4.0 (26.9)
Comparable Adjustments [Member] | Commodity derivative contracts [Member]    
Cost of product sold    
Net gain (loss) on undesignated commodity derivative contracts 13.1 (5.2)
Settlements of undesignated commodity derivative contracts $ 8.3 $ 5.5