Annual report pursuant to Section 13 and 15(d)

Options to Purchase Shares of Class A Common Stock Issued and Outstanding (Detail)

v2.4.0.6
Options to Purchase Shares of Class A Common Stock Issued and Outstanding (Detail) (USD $)
In Millions, except Share data in Thousands, unless otherwise specified
12 Months Ended
Dec. 31, 2011
Year
Shares  
Ending Balance 13,199
Exercisable at December 31, 2011 10,773
Weighted Average Exercise Price  
Ending Balance $ 70.18
Exercisable at December 31, 2011 $ 70.19
Weighted Average Remaining Contractual Term (in years)  
Outstanding at December 31, 2011 3.42
Nonqualified Stock Options
 
Shares  
Beginning Balance 15,302
Exercised (2,208)
Granted 189
Forfeited / Expired (84)
Ending Balance 13,199
Options Vested and Expected to Vest 13,117
Exercisable at December 31, 2011 10,773
Weighted Average Exercise Price  
Beginning Balance $ 68.62
Exercised $ 59.81
Granted $ 74.25
Forfeited / Expired $ 66.67
Ending Balance $ 70.18
Options Vested and Expected to Vest $ 70.18
Exercisable at December 31, 2011 $ 70.19
Weighted Average Remaining Contractual Term (in years)  
Outstanding at December 31, 2011 3.42
Options Vested and Expected to Vest 3.40
Exercisable at December 31, 2011 2.84
Aggregate Intrinsic Value  
Outstanding at December 31, 2011 $ 57
Options Vested and Expected to Vest 57
Exercisable at December 31, 2011 $ 49