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Employee Benefit Plans, Share Based Compensation by Share Based Payment Award Types (Details) (USD $)
In Millions, unless otherwise specified
3 Months Ended9 Months Ended
Sep. 30, 2011
Sep. 30, 2010
Sep. 30, 2011
Sep. 30, 2010
Dec. 31, 2010
Share-based Compensation Expense by Award Type     
Share-Based Compensation Expense, Total$ 60.5$ 44.4$ 169.6$ 129.6 
Employee Benefit Textuals [Abstract]     
Employee Contribution Matched in Percent  25.00%  
Matching Contributions to Plan3.93.213.710.7 
Deferred Compensation Liability10.1 10.1 8.1
Stock Options [Member]
     
Share-based Compensation Expense by Award Type     
Share-Based Compensation Expense, Total18.820.558.461.4 
Employee Benefit Textuals [Abstract]     
Unrecognized Compensation Cost Related to Unvested Stock Options - Adjusted for Forfeitures105.5 105.5  
Weighted Average Period that Unrecognized Compensation Cost Will be Recognized (years)  2.3  
Assumed Options [Member]
     
Share-based Compensation Expense by Award Type     
Share-Based Compensation Expense, Total0000.6 
RSU's and PSA's
     
Share-based Compensation Expense by Award Type     
Share-Based Compensation Expense, Total35.619.193.654.6 
Employee Benefit Textuals [Abstract]     
Unrecognized Compensation Cost Related to Unvested Stock Options - Adjusted for Forfeitures249.1 249.1  
Weighted Average Period that Unrecognized Compensation Cost Will be Recognized (years)  2.2  
Assumed Restricted Stock Units [Member]
     
Share-based Compensation Expense by Award Type     
Share-Based Compensation Expense, Total0000.5 
Employee Stock Purchase Plan [Member]
     
Share-based Compensation Expense by Award Type     
Share-Based Compensation Expense, Total4.63.513.29.9 
Other Acquisition Related Compensation [Member]
     
Share-based Compensation Expense by Award Type     
Share-Based Compensation Expense, Total$ 1.5$ 1.3$ 4.4$ 2.6