v2.4.0.8
Stock-Based Compensation(Details 3) (USD $)
In Millions, except Share data in Thousands, unless otherwise specified
6 Months Ended
Jun. 30, 2014
Stock Options [Member]
 
Stock Option Activity [Abstract]  
Stock options, shares outstanding at January 1, 2014 7,443
Stock options, shares granted 989
Stock options, shares exercised (2,491)
Stock options, shares forfeited or expired (60)
Stock options, shares outstanding at June 30, 2014 5,881
Stock options, shares vested or expected to vest at June 30, 2014 5,818
Stock options, shares exercisable at June 30, 2014 3,807
Stock options weighted-average exercise price, outstanding at January 1, 2014 $ 40.07
Stock options weighted-average exercise price, granted $ 87.56
Stock options weighted-average exercise price, exercised $ 30.35
Stock options weighted-average exercise price, forfeited or expired $ 68.56
Stock options weighted-average exercise price, outstanding at June 30, 2014 $ 51.88
Stock options weighted-average exercise price, vested or expected to vest at June 30, 2014 $ 51.62
Stock options weighted-average exercise price, options exercisable at June 30, 2014 $ 39.49
Stock options weighted-average remaining contractual term in years, outstanding at January 1, 2014 5 years 10 months
Stock options weighted-average remaining contractual term in years, outstanding at June 30, 2014 6 years 2 months
Stock options weighted-average remaining contractual term in years, vested or expected to vest at June 30, 2014 6 years 1 month
Stock options weighted-average remaining contractual term in years, options exercisable at June 30, 2014 4 years 10 months
Stock options aggregate intrinsic value, outstanding at January 1, 2014 $ 327
Stock options aggregate intrinsic value, outstanding at June 30, 2014 281
Stock options aggregate intrinsic value, vested or expected to vest at June 30, 2014 280
Stock options aggregate intrinsic value, options exercisable at June 30, 2014 229
Contractual Term Stock options are granted at the closing price on the date of grant, have ten-year contractual terms
Stock options, years until vest 3 years
Stock options, subject to performance or market-based vesting conditions None
Unrecognized Compensation Expense [Abstract]  
Unrecognized compensation expense 24
Expected weighted-average period (in years) of nonvested stock options to be recognized 1 year 6 months
Retention Awards [Member]
 
Awards Activity [Abstract]  
Awards, shares nonvested at January 1, 2014 3,712
Awards, shares granted 864
Awards, shares vested (1,071)
Awards, shares forfeited (67)
Awards, shares nonvested at June 30, 2014 3,438
Awards weighted-average grant-date fair value, nonvested at January 1, 2014 $ 49.02
Awards weighted-average grant-date fair value, granted $ 87.97
Awards weighted-average grant-date fair value, vested $ 31.14
Awards weighted-average grant-date fair value, forfeited $ 57.16
Awards weighted-average grant-date fair value, nonvested at June 30, 2014 $ 64.22
Unrecognized Compensation Expense [Abstract]  
Unrecognized compensation expense 113
Expected weighted-average period (in years) of nonvested stock options to be recognized 2 years 1 month
Performance Retention Awards [Member]
 
Awards Activity [Abstract]  
Awards, shares nonvested at January 1, 2014 1,888
Awards, shares granted 456
Awards, shares vested (661)
Awards, shares forfeited (65)
Awards, shares nonvested at June 30, 2014 1,618
Awards weighted-average grant-date fair value, nonvested at January 1, 2014 $ 53.70
Awards weighted-average grant-date fair value, granted $ 83.06
Awards weighted-average grant-date fair value, vested $ 44.94
Awards weighted-average grant-date fair value, forfeited $ 60.86
Awards weighted-average grant-date fair value, nonvested at June 30, 2014 $ 65.26
Unrecognized Compensation Expense [Abstract]  
Unrecognized compensation expense $ 50
Expected weighted-average period (in years) of nonvested stock options to be recognized 1 year 6 months