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Registration of securities issued in business combination transactions

STOCK-BASED COMPENSATION PLANS (Details 2)

v2.4.0.6
STOCK-BASED COMPENSATION PLANS (Details 2) (USD $)
In Millions, except Share data, unless otherwise specified
9 Months Ended 12 Months Ended
Sep. 30, 2012
Sep. 30, 2011
Dec. 31, 2011
Dec. 31, 2010
Dec. 31, 2009
Nonvested shares
Ìý Ìý Ìý Ìý Ìý
Weighted Average Grant-Date Fair Value Ìý Ìý Ìý Ìý Ìý
Total unrecognized compensation cost related to nonvested share-based compensation arrangements granted under the Stock Incentive Plan $ 21 Ìý $ 16 Ìý Ìý
Weighted-average period over which cost is expected to be recognized 1 year 2 months 12 days Ìý 10 months 24 days Ìý Ìý
Value of share awards vested $ 21 $ 23 $ 23 $ 18 $ 12
Equity Awards
Ìý Ìý Ìý Ìý Ìý
Nonvested shares Ìý Ìý Ìý Ìý Ìý
Nonvested at the beginning of the period (in shares) 2,287,000 3,126,000 3,126,000 Ìý Ìý
Granted (in shares) 934,000 Ìý 675,000 Ìý Ìý
Vested (in shares) (1,395,000) Ìý (1,500,000) Ìý Ìý
Forfeited (in shares) (27,000) Ìý (14,000) Ìý Ìý
Nonvested at the end of the period (in shares) 1,799,000 Ìý 2,287,000 Ìý Ìý
Weighted Average Grant-Date Fair Value Ìý Ìý Ìý Ìý Ìý
Nonvested at the beginning of the period (in dollars per share) $ 9.92 $ 6.95 $ 6.95 Ìý Ìý
Granted (in dollars per share) $ 13.41 Ìý $ 17.55 Ìý Ìý
Vested (in dollars per share) $ 7.07 Ìý $ 7.20 Ìý Ìý
Forfeited (in dollars per share) $ 15.26 Ìý $ 4.98 Ìý Ìý
Nonvested at the end of the period (in dollars per share) $ 13.86 Ìý $ 9.92 Ìý Ìý
Liability Awards
Ìý Ìý Ìý Ìý Ìý
Nonvested shares Ìý Ìý Ìý Ìý Ìý
Nonvested at the beginning of the period (in shares) 1,100,000 1,642,000 1,642,000 Ìý Ìý
Granted (in shares) 383,000 Ìý 311,000 Ìý Ìý
Vested (in shares) (760,000) Ìý (729,000) Ìý Ìý
Forfeited (in shares) (63,000) Ìý (124,000) Ìý Ìý
Nonvested at the end of the period (in shares) 660,000 Ìý 1,100,000 Ìý Ìý
Weighted Average Grant-Date Fair Value Ìý Ìý Ìý Ìý Ìý
Nonvested at the beginning of the period (in dollars per share) $ 9.42 $ 6.05 $ 6.05 Ìý Ìý
Granted (in dollars per share) $ 13.41 Ìý $ 17.59 Ìý Ìý
Vested (in dollars per share) $ 6.53 Ìý $ 5.55 Ìý Ìý
Forfeited (in dollars per share) $ 15.32 Ìý $ 7.99 Ìý Ìý
Nonvested at the end of the period (in dollars per share) $ 14.51 Ìý $ 9.42 Ìý Ìý
Restricted stock units
Ìý Ìý Ìý Ìý Ìý
Nonvested shares Ìý Ìý Ìý Ìý Ìý
Vested (in shares) (72,161) Ìý (115,045) Ìý Ìý
Weighted Average Grant-Date Fair Value Ìý Ìý Ìý Ìý Ìý
The number of restricted stock units vested at the balance sheet date (in shares) 516,338 Ìý 444,177 Ìý Ìý