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Share-Based Compensation (Tables)
12 Months Ended
Dec. 31, 2013
Share-based Compensation [Abstract]  
Schedule of Share-based Compensation, Stock Options, Activity
A summary of stock option activity under the Plans as of December 31, 2013, 2012 and 2011 and changes during the years then ended is as follows:
Options
 
Shares (000's)
 
Weighted-Average Exercise Price
 
Weighted-Average Remaining Contractual Term
 
Aggregate InstrinsicValue (000's)
Outstanding at January 1, 2011
 
4,292

 
$
25.29

 
2.01
 
70

Exercised
 

 

 
 
 
 
Forfeited
 

 

 
 
 
 
Expired
 
(2,215
)
 
25.55

 
 
 
 
Outstanding at December 31, 2011
 
2,077

 
$
25.15

 
1.85
 
$

Exercised
 

 

 
 
 
 
Forfeited
 
(71
)
 
25.85

 
 
 
 
Expired
 
(186
)
 
25.97

 
 
 
 
Outstanding at December 31, 2012
 
1,820

 
$
24.73

 
1.82
 
$

Acquired
 
63

 
218.01

 
 
 
 
Exercised
 

 

 
 
 
 
Forfeited
 
(8
)
 
23.93

 
 
 
 
Expired
 
(479
)
 
36.64

 
 
 
 
Outstanding at December 31, 2013
 
1,396

 
$
28.84

 
1.14
 
$
87

Exercisable at December 31, 2013
 
1,396

 
$
28.84

 
1.14
 
$
87

 
 
 
 
 
 
 
 
 
Schedule of Nonvested Share Activity
A summary of the status of the Corporation's nonvested shares as of December 31, 2013, 2012 and 2011 and changes during the years then ended, is as follows:
 
 
 
 
Weighted-Average
 
 
 
 
Grant Date
Nonvested (restricted) Shares
 
Shares (000's)
 
Fair Value
Nonvested at January 1, 2011
 
871

 
$
20.17

Granted
 
585

 
16.48

Vested
 
(407
)
 
19.75

Forfeited or expired
 
(23
)
 
19.21

Nonvested at December 31, 2011
 
1,026

 
$
18.26

Granted
 
596

 
16.06

Vested
 
(493
)
 
18.29

Forfeited or expired
 
(50
)
 
18.94

Nonvested at December 31, 2012
 
1,079

 
$
17.00

Granted
 
823

 
16.47

Vested
 
(508
)
 
17.90

Forfeited or expired
 
(52
)
 
16.89

Nonvested at December 31, 2013
 
1,342

 
$
16.34