Quarterly report pursuant to Section 13 or 15(d)

Business Segment Information (Details)

v3.5.0.2
Business Segment Information (Details) - USD ($)
$ in Millions
3 Months Ended 6 Months Ended
Aug. 31, 2016
Aug. 31, 2015
Aug. 31, 2016
Aug. 31, 2015
Cost of product sold        
Net gain (loss) on undesignated commodity derivative contracts $ (9.2) $ (22.2) $ (6.6) $ (31.5)
Amortization of favorable interim supply agreement     (6.3) (22.7)
Total cost of product sold (1,052.2) (957.8) (2,042.7) (1,852.0)
Selling, general and administrative expenses        
Total selling, general and administrative expenses (358.1) (296.2) (686.7) (606.0)
Comparable Adjustments [Member]        
Cost of product sold        
Flow through of inventory step-up (3.4) (1.2) (11.5) (1.2)
Amortization of favorable interim supply agreement 0.0 (9.0) (2.2) (17.9)
Total cost of product sold (2.0) (14.7) 9.1 (23.3)
Selling, general and administrative expenses        
Costs associated with a potential initial public offering (4.4) 0.0 (8.1) 0.0
Transaction, integration and other acquisition-related costs (3.0) (5.5) (5.3) (10.8)
Restructuring and related charges 0.1 (1.3) (1.0) (14.3)
Total selling, general and administrative expenses (7.3) (6.8) (14.4) (25.1)
Comparable Adjustments, Operating loss (9.3) (21.5) (5.3) (48.4)
Comparable Adjustments [Member] | Commodity derivative contracts [Member]        
Cost of product sold        
Settlements of undesignated commodity derivative contracts 6.8 6.7 15.1 12.2
Net gain (loss) on undesignated commodity derivative contracts $ (5.4) $ (11.2) $ 7.7 $ (16.4)