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STOCK-BASED COMPENSATION PLANS (Tables)
 12 Months Ended
Dec. 31, 2019
Share-based Payment Arrangement [Abstract]  
Schedule of Compensation Cost for Share-based Payment Arrangements, Allocation of Share-based Compensation Costs by Plan [Table Text Block]
The table below summarizes the components of total stock-based compensation (in millions):
201920182017
Stock options$3  $3  $3  
Stock awards21  23  24  
Deferred stock awards1  1  1  
Employee stock purchase plan11  9  6  
Stock-based compensation$36  $36  $34  
Tax benefit related to stock-based compensation$9  $9  $13  
Schedule of Unrecognized Compensation Cost, Nonvested Awards [Table Text Block]
Unrecognized stock-based compensation for non-vested options and awards and the weighted-average period the expense will be recognized (in millions):
AmountWeighted-Average
Period 		 
Stock options$4  1.3
Stock awards20  1.5
Unrecognized stock-based compensation$24  1.5
Schedule of Share-based Payment Award, Stock Options, Valuation Assumptions [Table Text Block]
The fair value of each option grant was estimated on the date of grant using the Black-Scholes option-pricing model with the following weighted-average assumptions used for grants:
 201920182017
Expected volatility30 %30 %51 %
Expected term6 years6 years6 years
Risk-free interest rate2.41 %2.61 %2.04 %
Expected dividend yield2.09 %1.94 %1.10 %
Weighted-average grant date fair value per share$16.84  $17.18  $41.19  
Estimated fair value of options granted (millions)$4  $1  $4  
Share-based Compensation, Stock Options, Activity [Table Text Block]
The tables below summarize stock option activity for the year ended December 31, 2019:
 SharesWeighted-
Average Exercise Price Per Share		Weighted-
Average
Contractual Life (Years)		Aggregate Intrinsic
Value
(in millions)
Outstanding, December 31, 2018573,242  $57.78  6.6$6  
Granted252,200  66.52    
Exercised(21,322) 36.14    
Canceled(5,366) 68.94  
Forfeited or expired(4,699) 70.98    
Outstanding, December 31, 2019794,055  $60.98  6.5$7  
Exercisable, December 31, 2019341,322  $50.50  4.3$7  
Vested or expected to vest, December 31, 2019793,684  $60.98  6.5$7  

 (in millions)201920182017
Intrinsic value of option exercises$1  $1  $6  
Cash received from stock option exercises1  1  3  
Tax benefit related to stock option exercises—  —  2  
Fair value of options vested3  2  3  
Schedule of Share-based Compensation, Restricted Stock Units Award Activity [Table Text Block]
The following table summarizes information about outstanding stock awards:
 Number
of Units		Weighted-Average Grant Date Fair ValueWeighted-
Average
Contractual
Life (Years)		Aggregate
Intrinsic
Value (in
millions)
Non-vested, December 31, 2018511,813  $78.75  1.5$31  
Granted402,816  66.35      
Vested(270,802) 74.61      
Forfeited(102,214) 75.21      
Non-vested, December 31, 2019541,613  $71.82  1.4$37