Quarterly report pursuant to Section 13 or 15(d)

Borrowings (Long-term Debt) (Details Textual)

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Borrowings (Long-term Debt) (Details Textual) (USD $)
In Millions, unless otherwise specified
3 Months Ended 1 Months Ended 2 Months Ended 14 Months Ended
May 31, 2012
May 31, 2011
May 31, 2012
Term A-1 Facility [Member]
May 31, 2012
Term A Facility [Member]
May 31, 2012
April 2012 Senior Notes [Member]
Apr. 30, 2012
April 2012 Senior Notes [Member]
May 31, 2012
April 2012 Senior Notes [Member]
May 31, 2012
April 2012 Senior Notes [Member]
Apr. 17, 2012
April 2012 Senior Notes [Member]
Borrowings (Textual)                  
Maximum Borrowing Amount under Credit Facility $ 1,650.0   $ 250.0 $ 550.0          
Debt Instrument, Maturity Date     May 03, 2019 May 03, 2017 May 31, 2022        
Incremental borrowings, Minimum 25                
Incremental borrowings, Maximum 750                
LIBOR margin     2.00% 1.75%          
Pledge of ownership interests in certain of Company's domestic subsidiaries 100.00%                
Pledge of voting capital stock interests in certain of Company's foreign subsidiaries, Minimum 55.00%                
Pledge of voting capital stock interests in certain of Company's foreign subsidiaries, Maximum 65.00%                
Senior notes outstanding     250.0 550.0          
Credit facility, interest rate     2.20% 2.00%          
Debt Instrument, Face Amount                 600.0
Coupon rate of notes                 6.00%
Net proceeds from issuance of senior notes 1,400.0 0       591.4      
Percentage of Outstanding Principal Amount as Redemption Price               100.00%  
Basis Points Above Treasury Rate             50 basis points    
Aggregate principal amount outstanding         600.0   600.0 600.0  
Unamortized Discount on senior notes $ 5.0