v3.3.1.900
SHARE-BASED COMPENSATION (DETAILS) - USD ($)
$ / shares in Units, $ in Millions
12 Months Ended
Dec. 31, 2015
Dec. 31, 2014
Dec. 31, 2013
Share-Based Compensation      
Share-based compensation expense $ 46 $ 49 $ 53
Additional disclosures      
Weighted-average grant date fair value (in dollars per share) $ 19.36 $ 28.25 $ 26.95
Total intrinsic value of options exercised (in dollars) $ 11 $ 34 $ 29
Restricted Stock Units      
Restricted stock units outstanding at beginning of period (in shares) 1,149,538    
Granted (in shares) 499,961    
Vested/issued (in shares) (250,656)    
Forfeited/cancelled (in shares) (238,215)    
Restricted stock units outstanding at end of period (in shares) 1,160,628 1,149,538  
Stock option awards      
Fair Value Assumptions      
Expected option term 5 years 10 months 13 days 6 years 7 days 6 years
Expected dividend yield (as a percent) 1.67% 1.51% 1.45%
Expected volatility (as a percent) 27.47% 40.91% 43.23%
Risk-free interest rate (as a percent) 1.73% 1.84% 1.01%
Options      
Outstanding at beginning of period (in shares) 4,533,492    
Granted (in shares) 868,825    
Exercised (in shares) (455,612)    
Forfeited or expired (in shares) (151,034)    
Outstanding at end of period (in shares) 4,795,671 4,533,492  
Exercisable at end of period (in shares) 3,249,937    
Weighted-Average Exercise Price      
Outstanding balance at beginning of period (in dollars per share) $ 73.70    
Granted (in dollars per share) 81.61    
Exercised (in dollars per share) 64.48    
Forfeited or expired (in dollars per share) 85.37    
Outstanding balance at end of period (in dollars per share) 75.64 $ 73.70  
Exercisable balance at end of period (in dollars per share) $ 73.58    
Weighted-Average Remaining Contractual Term      
Outstanding , Weighted-Average Remaining Contractual Term 6 years 4 days    
Exercisable, Weighted-Average Remaining Contractual Term 4 years 9 months 11 days    
Aggregate Intrinsic Value      
Outstanding at end of period (in dollars) $ 7    
Exercisable at end of period (in dollars) 7    
Unrecognized Compensation Cost      
Total unrecognized compensation related to non-vested awards (in dollars) $ 17    
Period of recognition of total unrecognized compensation related to non-vested shares 2 years    
Restricted stock units      
Unrecognized Compensation Cost      
Total unrecognized compensation related to non-vested awards (in dollars) $ 41    
Period of recognition of total unrecognized compensation related to non-vested shares 2 years    
Weighted-Average Grant-Date Fair Value      
Restricted stock units outstanding at beginning of period (in dollars per share) $ 74.49    
Granted (in dollars per share) 81.97 79.26 $ 74.40
Vested/issued (in dollars per share) 72.07    
Forfeited/cancelled (in dollars per share) 70.32    
Restricted stock units outstanding at end of period (in dollars per share) $ 79.16 $ 74.49  
Restricted Stock Units, Additional Activity Information      
Common shares issued, net of common shares withheld to cover taxes 499,961    
Common shares issued, net of common shares withheld to cover taxes, weighted-average fair value (in dollars per share) $ 81.83    
Total fair value of restricted stock units vested (in dollars) $ 20    
Performance-based restricted stock units      
Restricted Stock Units      
Forfeited/cancelled (in shares) (205,351)    
Equity Incentive Plan and 2009 EIP | Stock option awards      
Additional disclosures      
Expiration period of award 10 years    
Equity Incentive Plan and 2009 EIP | Stock option awards | Minimum      
Additional disclosures      
Vesting period 1 year    
Equity Incentive Plan and 2009 EIP | Stock option awards | Maximum      
Additional disclosures      
Vesting period 3 years    
Equity Incentive Plan and 2009 EIP | Restricted stock units | Minimum      
Additional disclosures      
Vesting period 1 year    
Equity Incentive Plan and 2009 EIP | Restricted stock units | Maximum      
Additional disclosures      
Vesting period 5 years    
2009 EIP      
Common Shares Reserved for Share-Based Awards      
Common shares reserved for grant of stock options, stock awards and other awards 10,000,000    
Common shares available for future grants 2,385,479    
2007 Directors' Plan      
Common Shares Reserved for Share-Based Awards      
Common shares reserved for grant of stock options, stock awards and other awards 600,000    
Common shares available for future grants 235,321    
2007 Directors' Plan | Stock option awards      
Additional disclosures      
Expiration period of award 10 years