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 $)
9 Months Ended 1 Months Ended 1 Months Ended
Nov. 30, 2012
Nov. 30, 2011
Nov. 30, 2012
Term A Facility [Member]
Nov. 30, 2012
Term A-1 Facility [Member]
Nov. 30, 2012
Term A-2 Facility [Member]
Aug. 31, 2012
Term A-2 Facility [Member]
Apr. 30, 2012
April 2012 Senior Notes [Member]
Nov. 30, 2012
April 2012 Senior Notes [Member]
Apr. 17, 2012
April 2012 Senior Notes [Member]
Aug. 31, 2012
August 2012 Senior Notes [Member]
Nov. 30, 2012
August 2012 Senior Notes [Member]
Aug. 14, 2012
August 2012 Senior Notes [Member]
Debt Instrument [Line Items]                        
Maximum borrowing amount under credit facility $ 2,225,000,000   $ 550,000,000 $ 250,000,000 $ 575,000,000 $ 575,000,000            
Debt instrument, Maturity date     May 03, 2017 May 03, 2019 Aug. 08, 2017   May 31, 2022     Mar. 01, 2023    
Incremental borrowings, Minimum 25,000,000                      
Incremental borrowings, Maximum, Term A-2 Facility, Outstanding and undrawn 500,000,000                      
LIBOR margin     1.75% 2.00%                
Incremental borrowings, Maximum, Term A-2 Facility, Terminated 750,000,000                      
Incremental borrowings, Maximum, Term A-2 Facility, Outstanding and drawn, Unadjusted 750,000,000                      
Incremental borrowings, Maximum, Term A-2 Facility, Outstanding and drawn, Adjustment 325,000,000                      
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     543,100,000 249,400,000                
Credit facility, interest rate     2.00% 2.20%                
Debt instrument, Face Amount                 600,000,000     650,000,000
Coupon rate of notes                 6.00%     4.625%
Net proceeds from issuance of senior notes 2,050,000,000 0         591,400,000     640,600,000    
Percentage of outstanding principal amount as redemption price             100.00%     100.00%    
Basis Points Above Adjusted Treasury Rate             50.00%     50.00%    
Aggregate principal amount outstanding               600,000,000     650,000,000  
Special mandatory redemption date                   Dec. 30, 2013    
Percentage of outstanding principal amount as Special Mandatory Redemption price                   100.00%    
Unamortized discount on senior notes $ 4,300,000