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STOCK-BASED AWARD PLANS (Tables)
 12 Months Ended
Dec. 31, 2017
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]  
Share Based Compensation Expense By Award Type [Text Block]
Stock-based compensation expense is as follows (in millions, except for weighted average years):
 
 
 
 
 
 
 
 
As of December 31, 2017
 
 
Total Compensation Expense
Year Ended December 31,
Unrecognized
stock-based
compensation expense
 
Weighted-average years to be recognized
 
 
2017
 
2016
 
2015
 
Restricted Stock Awards
 
$
11

 
$
10

 
$
11

 
$
8

 
1.4
Restricted Stock Units
 
$
7

 
$
6

 
$
6

 
$
5

 
1.4
Tax benefit related to compensation expense
 
$
10

 
$
10

 
$
15

 
 
 
 
Schedule Of Share Based Compensation Restricted Stock Awards Activity Table [Text Block]
Changes in nonvested restricted stock awards as of December 31, 2017 were as follows (in thousands, except per share amounts):
 
 
Number of Shares
 
Weighted-Average Grant Date Fair Value
Nonvested at the beginning of the year
 
1,220

 
$
17.20

Granted
 
828

 
$
16.22

Vested
 
(585
)
 
$
16.53

Forfeited
 
(74
)
 
$
17.67

Nonvested at the end of the year
 
1,389

 
$
16.46
Schedule of Share-based Compensation, Restricted Stock Units Award Activity [Table Text Block]
Changes in nonvested restricted stock units as of December 31, 2017 were as follows (in thousands, except per share amounts):
 
 
Number of Shares
 
Weighted-Average
Grant Date Fair Value
Nonvested at the beginning of the year
 
1,803

 
$
16.25

Granted
 
624

 
$
15.94

Vested
 
(71
)
 
$
18.35

Forfeited
 
(541
)
 
$
17.09

Nonvested at the end of the year
 
1,815

 
$
15.80
Share-based Compensation, Stock Options, Activity [Table Text Block]
The following table summarizes activity and balance information of the options under the 2014 Stock Option Plan as of December 31, 2017:
 
 
Shares
 
Weighted-Average Exercise Price
 
Weighted-Average Remaining Contractual Term (Years)
 
Aggregate Intrinsic Value (2)
2014 Stock Option Plan
 
(in thousands, except per share amounts)
Outstanding at the beginning of the year
 
1,080

 
$
21.38

 
 
 
 
Granted
 
—

 
$
—

 
 
 
 
Exercised
 
—

 
$
—

 
 
 
 
Expired
 
(855
)
 
$
20.62

 
 
 
 
Forfeited
 
—

 
$
—

 
 
 
 
Outstanding at the end of the year (1)
 
225

 
$
24.30

 
1.06
 
$
—

Options exercisable at year end
 
225

 
$
24.30

 
1.06
 
$
—