v2.4.0.8
Stock-Based Compensation (Details) (USD $)
12 Months Ended
Dec. 31, 2013
Dec. 31, 2012
Dec. 31, 2011
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercises in Period, Total Intrinsic Value $ 22,000,000 $ 1,000,000 $ 0
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding [Roll Forward]      
Options Outstanding, Beginning balance, Number 17,862,501    
Options Outstanding, Beginning balance, Weighted Average Exercise Price $ 17.30    
Options Ouststanding, Beginning balance, Weighted Average Remaining Term (in years) 3 years 1 month 6 days 4 years 0 months 0 days  
Options Outstanding, Beginning balance, Aggregate Intrinsic Value (in $ millions) 42,000,000    
Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Gross 11,299    
Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Weighted Average Exercise Price $ 18.34    
Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercises in Period 3,724,411    
Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercises in Period, Weighted Average Exercise Price $ 13.70    
Share-based Compensation Arrangement by Share-based Payment Award, Options, Forfeitures in Period 0    
Share-based Compensation Arrangement by Share-based Payment Award, Options, Forfeitures in Period, Weighted Average Exercise Price $ 0.00    
Share-based Compensation Arrangement by Share-based Payment Award, Options, Expirations in Period 35,100    
Share-based Compensation Arrangement by Share-based Payment Award, Options, Expirations in Period, Weighted Average Exercise Price $ 17.69    
Options Outstanding, Ending balance, Number 14,114,289 17,862,501  
Options Outstanding, Ending balance, Weighted Average Exercise Price $ 18.25 $ 17.30  
Options Ouststanding, Ending balance, Weighted Average Remaining Term (in years) 3 years 1 month 6 days 4 years 0 months 0 days  
Options Outstanding, Ending balance, Aggregate Intrinsic Value (in $ millions) 36,000,000 42,000,000  
Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercisable, Number 12,475,493    
Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercisable, Weighted Average Exercise Price $ 18.70    
Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercisable, Weighted Average Remaining Contractual Term 2 years 6 months 3 days    
Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercisable, Intrinsic Value 29,000,000    
Share-based Compensation Arrangement by Share-based Payment Award, Options, Vested and Expected to Vest, Outstanding, Number 14,038,217    
Share-based Compensation Arrangement by Share-based Payment Award, Options, Vested and Expected to Vest, Outstanding, Weighted Average Exercise Price $ 18.27    
Share-based Compensation Arrangement by Share-based Payment Award, Options, Vested and Expected to Vest, Outstanding, Weighted Average Remaining Contractual Term 3 years 1 month 6 days    
Share-based Compensation Arrangement by Share-based Payment Award, Options, Vested and Expected to Vest, Outstanding, Aggregate Intrinsic Value 36,000,000    
Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions and Methodology [Abstract]      
Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Expected Term 6 years 6 months 0 days [1] 6 years 6 months 0 days  
Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Risk Free Interest Rate 1.40%    
Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Expected Volatility Rate 25.60%    
Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Expected Dividend Rate 0.00% [2] 0.00% [2] 0.00% [2]
Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Weighted Average Grant Date Fair Value $ 5.31 $ 5.18 $ 5.49
Disclosure of Compensation Related Costs Share-based Payments (Textuals) [Abstract]      
Vesting period for graded and cliff vesting options - minimum 1 year    
Vesting period for graded and cliff vesting options - maximum 5 years    
Share-based Compensation Arrangement by Share-based Payment Award, Award Expiration Minimum Range 5 years    
Share-based Compensation Arrangement by Share-based Payment Award, Award Expiration Maximum Range 10 years    
Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Authorized for Directors 567,000    
Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Authorized for Employees 40,533,000    
Vest Term of First Sub Grant 1 year    
Vest Term of the Second Sub-Grant 2 years    
Vest Term of the Third Sub-Grant 3 years    
Grants in Option Grants with Three Year Cliff Vesting 1    
Vesting term of option grants with three year cliff vesting 3 years    
Stock-based compensation expense 34,000,000 25,000,000 24,000,000
Employee Service Share-based Compensation, Cash Received from Exercise of Stock Options 20,000,000 5,000,000 0
Allocated Share Based Compensation Expense Liability Classified Share-Based Awards 2,000,000    
Minimum [Member]
     
Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions and Methodology [Abstract]      
Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Risk Free Interest Rate   1.20% 1.70%
Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Expected Volatility Rate   27.00% 31.20%
Maximum [Member]
     
Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions and Methodology [Abstract]      
Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Risk Free Interest Rate   1.60% 3.20%
Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Expected Volatility Rate   30.50% 44.90%
Employee Stock Option [Member]
     
Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions and Methodology [Abstract]      
Employee Service Share-based Compensation, Nonvested Awards, Compensation Cost Not yet Recognized 1,000,000    
Employee Service Share-based Compensation, Nonvested Awards, Compensation Cost Not yet Recognized, Period for Recognition 0 years 8 months 13 days    
Restricted Stock [Member]
     
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Vested in Period, Total Fair Value 25,000,000 20,000,000 7,000,000
Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions and Methodology [Abstract]      
Employee Service Share-based Compensation, Nonvested Awards, Compensation Cost Not yet Recognized 26,000,000    
Employee Service Share-based Compensation, Nonvested Awards, Compensation Cost Not yet Recognized, Period for Recognition 1 year 1 month 9 days    
Restricted Stock and Stock Unit Activity [Abstract]      
Nonvested Restricted Stock, Beginning balance, Number 4,134,037    
Nonvested Restricted Stock, Beginning balance, Weighted Average Grant Date Fair Value $ 14.33    
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period 1,790,448    
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period, Weighted Average Grant Date Fair Value $ 18.47    
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Forfeited in Period 182,438    
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Forfeited in Period, Weighted Average Grant Date Fair Value $ 16.17    
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Vested in Period 1,310,206    
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Vested in Period, Weighted Average Grant Date Fair Value $ 12.57    
Nonvested Restricted Stock, Ending balance, Number 4,431,841 4,134,037  
Nonvested Restricted Stock, Ending balance, Weighted Average Grant Date Fair Value $ 16.45 $ 14.33  
Restricted Stock Units (RSUs) [Member]
     
Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions and Methodology [Abstract]      
Employee Service Share-based Compensation, Nonvested Awards, Compensation Cost Not yet Recognized $ 0    
Employee Service Share-based Compensation, Nonvested Awards, Compensation Cost Not yet Recognized, Period for Recognition 0 years 4 months 11 days    
Performance Shares [Member]
     
Restricted Stock and Stock Unit Activity [Abstract]      
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period 449,798    
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period, Weighted Average Grant Date Fair Value $ 21.25    
[1] Expected term calculated using the simplified method prescribed by the SEC due to the lack of sufficient historical exercise data to provide a reasonable basis to estimate the expected term.
[2] We have never paid cash dividends on our common stock, and it is not anticipated that any cash dividends will be paid on our common stock in the near future