v2.4.0.6
Share-Based Compensation (Narrative) (Details) (USD $)
In Millions, except Share data, unless otherwise specified
3 Months Ended
Mar. 31, 2013
Mar. 31, 2012
Mar. 28, 2013
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Common stock shares reserved for future issuance 4,100,000    
ESPP discount from market price 15.00%    
Net cash proceeds from the exercise of stock options $ 6 $ 1  
Stock options exercised in period 377,425 [1] 100,299  
Stock options, exercisable 4,902,865 [1] 5,700,000  
Weighted-average exercise price $ 20.93 $ 15.10  
Total pre-tax intrinsic value of stock options exercised 6.0 1.0  
Closing stock price     $ 32.30
Total number of in-the-money stock options exercisable 3,600,000    
Restricted stock and PSU's [Member]
     
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Total unrecognized compensation cost 57    
Weighted-average period unrecognized compensation cost is expected to be recognized, in years 1 year 7 months 6 days    
PSUs [Member]
     
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Percentage of target amount granted, minimum 0.00%    
Percentage of target amount granted, maximum 150.00%    
Performance period (year) 3    
Number of peer groups 2    
Performance-based long-term incentive program weighted percentage 50.00%    
Minimum payout 0.00%    
Maximum payout 200.00%    
PSUs [Member] | Chief executive officer's and executive vice presidents' [Member]
     
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Chief executive officer's and executive vice presidents' long-term stock-based compensation 100.00%    
PSUs [Member] | Senior vice presidents' [Member]
     
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Chief executive officer's and executive vice presidents' long-term stock-based compensation 50.00%    
Restricted stock [Member]
     
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
General expiration period of stock options 10 years    
Grant vesting period, expectation exceeds, years third    
Grant vesting period, expectation met, years fourth    
Grant vesting period, expectation not met, years fifth    
Restricted stock [Member] | Minimum [Member]
     
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Restricted stock vesting range 3 years    
Restricted stock [Member] | Maximum [Member]
     
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Restricted stock vesting range 5 years    
Non-qualified stock options [Member]
     
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Total unrecognized compensation cost $ 4    
Weighted-average period unrecognized compensation cost is expected to be recognized, in years 1 year    
[1] No stock option awards were granted during the three months ended March 31, 2013.