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STOCK-BASED COMPENSATION PLANS (Tables)
 12 Months Ended
Dec. 31, 2016
Disclosure of Compensation Related Costs, Share-based Payments [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):
 
2016
 
2015
 
2014
Stock options
$
2

 
$
2

 
$
3

Stock awards
11

 
11

 
10

Deferred stock awards
1

 
1

 
1

Employee stock purchase plan
5

 
3

 
2

Stock-based compensation
$
19

 
$
17

 
$
16

 
 
 
 
 
 
Tax benefit related to stock-based compensation
$
7

 
$
7

 
$
6
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):
 
Amount
 
Weighted-Average
Period
Stock options
$
2

 
1.1
Stock awards
21

 
0.9
Unrecognized stock-based compensation
$
23

 
0.9
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:
 
2016
 
2015
 
2014
Expected volatility
51
%
 
53
%
 
65
%
Expected term
6 years

 
6 years

 
6 years

Risk-free interest rate
1.23
%
 
1.67
%
 
1.87
%
Expected dividend yield
1.50
%
 
1.25
%
 
1.25
%
Weighted-average grant date fair value per share
$
27.14

 
$
28.71

 
$
21.70

Estimated fair value of options granted (millions)
$
2

 
$
3

 
$
3
Schedule of Share-based Compensation, Stock Options, Activity [Table Text Block]
The tables below summarize stock option activity for the year ended December 31, 2016:
 
Shares
 
Weighted-
Average Exercise Price Per Share
 
Weighted-
Average
Contractual Life (Years)
 
Aggregate Intrinsic
Value (in
millions)
Outstanding, December 31, 2015
540,345

 
$
31.58

 
6.3
 
$
26

Granted
79,340

 
65.63

 
 
 
 
Exercised
(158,758
)
 
23.62

 
 
 
 
Canceled
—

 
—

 
 
 
 
Forfeited or expired
(7,253
)
 
49.66

 
 
 
 
Outstanding, December 31, 2016
453,674

 
$
40.02

 
6.2
 
$
22

 
 
 
 
 
 
 
 
Exercisable, December 31, 2016
199,676

 
$
25.35

 
5.1
 
$
13

Vested or expected to vest, December 31, 2016
453,435

 
$
40.03

 
6.2
 
$
22


 (in millions)
2016
 
2015
 
2014
Intrinsic value of option exercises
$
9

 
$
14

 
$
20

Cash received from stock option exercises
3

 
4

 
6

Tax benefit related to stock option exercises
3

 
5

 
7

Fair value of options vested
3

 
3

 
2
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 Value
 
Weighted-
Average
Contractual
Life (Years)
 
Aggregate
Intrinsic
Value (in
millions)
Non-vested, December 31, 2015
470,715

 
$
38.09

 
0.8
 
$
38

Granted
374,863

 
63.53

 
 
 
 

Vested
(366,319
)
 
32.87

 
 
 
 

Forfeited
(39,166
)
 
40.35

 
 
 
 

Non-vested, December 31, 2016
440,093

 
$
63.86

 
1.4
 
$
39