Quarterly report pursuant to Section 13 or 15(d)

Recently Adopted Accounting Guidance (Details Textual)

v3.8.0.1
Recently Adopted Accounting Guidance (Details Textual) - USD ($)
$ / shares in Units, $ in Millions
3 Months Ended 6 Months Ended
Aug. 31, 2017
Aug. 31, 2016
Aug. 31, 2017
Aug. 31, 2016
New Accounting Pronouncements or Change in Accounting Principle [Line Items]        
Provision for income taxes $ 128.7 $ 163.6 $ 202.8 $ 313.3
Adjustments for New Accounting Pronouncement [Member]        
New Accounting Pronouncements or Change in Accounting Principle [Line Items]        
Provision for income taxes $ (18.8)   $ (51.3)  
Net income per common share attributable to CBI, diluted $ 0.02   $ 0.05