XML 60 R52.htm IDEA: XBRL DOCUMENT  v2.3.0.11
Employee Benefit Plans (Details 1) (Restricted Stock [Member], USD $)
In Millions, except Per Share data
6 Months Ended
Jun. 30, 2011
Restricted Stock [Member]
 
Restricted stock unit activity  
Beginning Balance, Shares 28
Beginning Balance, Weighted Average Grant-Date Fair Value per Share $ 27.17
Restricted stock units granted, shares 9.0
Restricted stock units granted, weighted average grant-date fair value per share $ 43.92
Restricted stock units cancelled, shares (1)
Restricted stock units cancelled, weighted average grant-date fair value per share $ 31.21
Restricted stock units vested, shares (7)
Restricted stock units vested, weighted average grant-date fair value per share $ 28.04
Ending Balance, Shares 29
Ending Balance, Weighted Average Grant-Date Fair Value per Share $ 32.14