XML 54 R35.htm IDEA: XBRL DOCUMENT v2.4.0.6
Stock-Based Incentive Plan (Narrative) (Details) (USD $)
In Millions, except Share data, unless otherwise specified
3 Months Ended
Mar. 31, 2012
Mar. 31, 2011
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]    
Total unrecognized compensation expense, net of estimated forfeitures $ 70.7  
Weighted-average period over which total unrecognized compensation expense expected to be recognized (years) 1.90  
Intrinsic value of stock-based awards exercised and restricted stock units converted 28.1 30.9
2003 Plan [Member]
   
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]    
Common stock shares reserved for issuance to employees 37,500,000  
Stock option awards expiration (years) ten  
Maximum shares that may be issued as restricted shares, restricted units, performance shares and stock awards 8,000,000  
Average remaining contractual term for options outstanding (years) 6.12  
Average remaining contractual term for options vested and expected to vest (years) 6.00  
Average remaining contractual term for options exercisable (years) 4.85  
Aggregate intrinsic value for options outstanding 130.4  
Aggregate intrinsic value for options vested and expected to vest 127.4  
Aggregate intrinsic value for options exercisable $ 112.4  
Maximum [Member] | 2003 Plan [Member]
   
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]    
Stock option award vesting period 4 years  
Minimum [Member] | 2003 Plan [Member]
   
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]    
Stock option award vesting period 3 years