Registration of securities issued in business combination transactions

STOCK-BASED COMPENSATION PLANS (Details)

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STOCK-BASED COMPENSATION PLANS (Details) (USD $)
In Millions, except Share data, unless otherwise specified
 3 Months Ended 9 Months Ended 12 Months Ended
Sep. 30, 2012
Sep. 30, 2011
Sep. 30, 2012
Sep. 30, 2011
Dec. 31, 2011
Dec. 31, 2010
Dec. 31, 2009
STOCK-BASED COMPENSATION PLANS              
Authorized number of shares to be granted under the Stock Incentive Plan 32,600,000   32,600,000   32,600,000    
Remaining shares available for grant 8,000,000   8,000,000   10,600,000    
Vesting period     3 years   3 years    
STOCK-BASED COMPENSATION PLANS              
Compensation cost from continuing operations $ 6 $ 2 $ 20 $ 17 $ 22 $ 24 $ 16
Total income tax benefit recognized in the statements of operations for stock-based compensation arrangements     6 5 6 8 6
Stock options
              
STOCK-BASED COMPENSATION PLANS              
Maximum contractual term     10 years   10 years    
Weighted average of the assumptions utilized for stock options granted              
Dividend yield (as a percent)   3.60% 3.00% 2.30% 2.30% 3.00% 15.40%
Expected volatility (as a percent)   65.00% 65.30% 65.60% 65.60% 69.00% 70.40%
Risk-free interest rate (as a percent)   1.80% 1.30% 2.80% 2.80% 3.10% 2.50%
Expected life of stock options granted during the period   6 years 7 months 6 days 6 years 7 months 6 days 6 years 7 months 6 days 6 years 7 months 6 days 6 years 7 months 6 days 6 years 7 months 6 days
Option Awards, Shares              
Outstanding at the beginning of the period (in shares)     10,345,000 10,997,000 10,997,000    
Granted (in shares)     1,363,000   953,000    
Exercised (in shares)     (661,000)   (1,268,000)    
Forfeited (in shares)     (251,000)   (337,000)    
Outstanding at the end of the period (in shares) 10,796,000   10,796,000   10,345,000 10,997,000  
Exercisable at the end of the period (in shares) 8,643,000   8,643,000   7,089,000    
Option Awards, Weighted Average Exercise Price              
Outstanding at the beginning of the period (in dollars per share)     $ 13.83 $ 12.28 $ 12.28    
Granted (in dollars per share)     $ 13.41   $ 17.51    
Exercised (in dollars per share)     $ 3.25   $ 2.82    
Forfeited (in dollars per share)     $ 19.76   $ 15.14    
Outstanding at the end of the period (in dollars per share) $ 14.29   $ 14.29   $ 13.83 $ 12.28  
Exercisable at the end of the period (in dollars per share) $ 14.27   $ 14.27   $ 16.34    
Outstanding, Weighted Average Remaining Contractual Term     5 years 7 months 6 days   5 years 10 months 24 days    
Exercisable, Weighted Average Remaining Contractual Term     4 years 9 months 18 days   5 years    
Outstanding, Aggregate Intrinsic Value 41   41   27    
Exercisable, Aggregate Intrinsic Value 38   38   13    
Weighted-average grant-date fair value of stock options granted (in dollars per share)     $ 6.36   $ 9.17 $ 6.97 $ 0.51
Total unrecognized compensation cost related to nonvested share-based compensation arrangements granted under the Stock Incentive Plan 11   11   8    
Weighted-average period over which cost is expected to be recognized     1 year 7 months 6 days   7 months 6 days    
Total intrinsic value of stock options exercised     $ 7 $ 19 $ 19 $ 14