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Stock Compensation Plans Level 3 (Tables)
12 Months Ended
Dec. 31, 2016
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]  
Stock based Compensation Plans
 
For the years ended December 31,
 
2016
2015
2014
Stock-based compensation plans expense
$
81

$
78

$
98

Income tax benefit
(29
)
(27
)
(34
)
Total stock-based compensation plans expense, after-tax
$
52

$
51

$
64

The risk-free rate for periods within the contractual life of the option
 
For the years ended December 31,
 
2016
2015
2014
Expected dividend yield
2.0%
1.8%
1.7%
Expected annualized spot volatility
27.3
%
-
41.3%
22.1
%
-
39.4%
25.9
%
-
57.8%
Weighted average annualized volatility
34.1%
32.7%
35.1%
Risk-free spot rate
0.3
%
-
1.8%
%
-
2.6%
0.1
%
-
2.8%
Expected term
5.0 years
5.0 years
5.0 years
Summary of the status of non-qualified stock options included in the company's stock plans
 
For the years ended December 31,
 
2016
2015
2014
Volatility of common stock
22.2%
21.4%
31.6%
Average volatility of peer companies
15.0
%
-
26.0%
14.0
%
-
24.0%
17.0
%
-
29.0%
Average correlation coefficient of peer companies
56.0%
54.0%
62.0%
Risk-free spot rate
1.0%
1.1%
0.7%
Term
3.0 years
3.0 years
3.0 years
 
Number of Options
(in thousands)
Weighted
Average
Exercise Price
Weighted
Average
Remaining
Contractual
Term
Aggregate
Intrinsic Value
 
For the year ended December 31, 2016
Outstanding at beginning of year
3,800

$
33.09

 
 
Granted
932

$
43.59

 
 
Exercised
(39
)
$
22.49

 
 
Forfeited



 
 
Expired
(94
)
$
81.81

 
 
Outstanding at end of year
4,599

$
34.31

6.3 years
$
63

Outstanding, fully vested and expected to vest
4,545

$
34.71

6.3 years
$
59

Exercisable at end of year
2,923

$
29.74

5.0 years
$
54

Share-based Compensation Arrangement by Share-based Payment Award, Options, Vested and Expected to Vest, Exercisable [Table Text Block]
 
Restricted Stock and
Restricted Stock Units
Performance Shares
 
Number of Shares
(in thousands)
Weighted-Average
Grant-Date
Fair Value
Number of Shares
(in thousands)
Weighted-Average
Grant date
Fair Value
Non-vested shares
For the year ended December 31, 2016
Non-vested at beginning of year
5,868

$
33.12

775

$
37.35

Granted
1,704

$
42.87

430

$
41.50

Performance based adjustment
 
 
237

$
36.45

Vested
(2,468
)
$
25.90

(474
)
$
36.45

Forfeited
(191
)
$
38.72

(27
)
$
40.69

Non-vested at end of year
4,913

$
39.87

941

$
40.72