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Stock-Based Compensation (Tables)
 12 Months Ended
Dec. 31, 2013
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]  
Stock Option Activity
The following summarizes stock option activity in each of the three years in the period ended December 31, 2013: 
 
Option Shares
 
Weighted Average Exercise Price
(in millions)
2013
 
2012
 
2011
 
2013
 
2012
 
2011
Outstanding, at beginning of year
2.3

 
2.0

 
1.9

 
$
8.93

 
$
10.16

 
$
12.61

Granted
0.5

 
0.6

 
0.7

 
8.50

 
5.52

 
6.50

Exercised
(0.3
)
 
—

 
—

 
7.47

 
—

 
—

Canceled or expired
(0.4
)
 
(0.3
)
 
(0.6
)
 
10.94

 
9.88

 
14.02

Outstanding, at end of year
2.1

 
2.3

 
2.0

 
$
8.63

 
$
8.93

 
$
10.16

Exercisable, at end of year
1.2

 
1.3

 
1.0

 
$
9.85

 
$
11.22

 
$
13.12
Summary of Information Concerning Stock Options Outstanding
 
Option Shares
 
Weighted Average Exercise Price
(in millions)
2013
 
2012
 
2011
 
2013
 
2012
 
2011
Outstanding, at beginning of year
2.3

 
2.0

 
1.9

 
$
8.93

 
$
10.16

 
$
12.61

Granted
0.5

 
0.6

 
0.7

 
8.50

 
5.52

 
6.50

Exercised
(0.3
)
 
—

 
—

 
7.47

 
—

 
—

Canceled or expired
(0.4
)
 
(0.3
)
 
(0.6
)
 
10.94

 
9.88

 
14.02

Outstanding, at end of year
2.1

 
2.3

 
2.0

 
$
8.63

 
$
8.93

 
$
10.16

Exercisable, at end of year
1.2

 
1.3

 
1.0

 
$
9.85

 
$
11.22

 
$
13.12


The following table summarizes information for stock options outstanding as of December 31, 2013 under all plans:
 
Options Outstanding
 
 
 
Options Exercisable
Range of Exercise Prices
Shares
 
Weighted Average
Remaining Life
 
Weighted Average
Exercise Price
 
Shares
 
Weighted Average
Exercise Price
 
(in millions)
 
(in years)
 
 
 
(in millions)
 
 
$0.00 — $5.00
—

 
7.3
 
$
4.47

 
—

 
$
4.47

5.01 — 10.00
1.5

 
8.0
 
6.72

 
0.6

 
6.21

10.01 — 15.00
0.3

 
4.6
 
11.01

 
0.3

 
10.96

15.01 — 20.00
0.3

 
1.7
 
17.17

 
0.3

 
17.17

 
2.1

 
6.8
 
$
8.63

 
1.2

 
$
9.85
Summary of Restricted Stock Grants
The following table summarizes restricted stock activity for the year ended December 31, 2013:
 
Number of
Restricted Shares
 
Weighted Average
Price per Share
 
(in millions)
 
 
Outstanding and non-vested, at December 31, 2012
0.3

 
$
7.38

Granted
0.1

 
8.39

Vested
(0.2
)
 
8.72

Outstanding and non-vested, at December 31, 2013
0.2

 
$
6.85
Equity Option [Member]
  
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]  
Assumptions Used to Calculate Fair Value
The fair value of each option grant was estimated using the Black-Scholes option pricing model with the following weighted average assumptions:
 
2013
 
2012
 
2011
Dividend yield
—
%
 
0.7
%
 
0.6
%
Expected volatility
59
%
 
59
%
 
52
%
Risk free interest rate
1.0
%
 
0.9
%
 
2.2
%
Weighted average expected option life in years
5.8

 
5.6

 
5.9
PSUs [Member]
  
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]  
Schedule of Share-based Compensation, Activity
The following table summarizes PSU activity for the year ended December 31, 2013:
 
Number of PSUs
 
Weighted Average Price per Share
 
(in millions)
 
 
Outstanding and non-vested, at December 31, 2012
0.3

 
$
5.50

Granted
0.3

 
8.57

Forfeited
(0.1
)
 
6.04

Outstanding and non-vested, at December 31, 2013
0.5

 
$
7.05