v2.4.1.9
Stock Incentive Plans (Tables)
 12 Months Ended
Dec. 31, 2014
Stock Incentive Plans [Abstract]  
Summary Of Stock Option Activity
Option activity for the year ended December 31, 2014 is summarized below:

 
Shares
 
Weighted Average Exercise Price
 
Aggregate Intrinsic Value
($ in millions)
 
Weighted Average Remaining Contractual Term
Outstanding as of December 31, 2013
1,894,390

 
$
11.71

 
 
 
 
Granted
—

 
—

 
 
 
 
Exercised
(619,324
)
 
10.77

 
 
 
 
Forfeited
(8,000
)
 
9.23

 
 
 
 
Outstanding as of December 31, 2014
1,267,066

 
$
12.18

 
$
50

 
2.2
 
 
 
 
 
 
 
 
Exercisable as of December 31, 2014
1,249,734

 
$
12.08

 
$
50

 
2.1
Option Pricing Assumptions
The fair value of each option grant is estimated on the date of the grant using the Black-Scholes option-pricing model with the following weighted-average assumptions:
 
Year Ended December 31,
 
2014 (1)
 
2013
 
2012 (1)
Expected life (in years)
—
 
5.1
 
—
Risk-free interest rate
—
 
0.8%
 
—
Expected volatility
—
 
48.1%
 
—
Expected dividend yield
—
 
—
 
—
 
 
 
 
 
 
(1) No options were awarded in the years ended December 31, 2014 and 2012.
Stock Option Awards
Other information pertaining to option activity is as follows:
 
Year Ended December 31,
 
2014 (1)
 
2013
 
2012 (1)
Weighted-average fair value of options granted
$
—

 
$
9.52

 
$
—

Total intrinsic value of stock options exercised ($ in millions)
$
17

 
$
13

 
$
24

 
 
 
 
 
 
(1) No options were awarded in the years ended December 31, 2014 and 2012.
Non-Vested Restricted Stock And Restricted Stock
A summary of the Company's non-vested restricted stock and restricted stock unit shares as of December 31, 2014, and changes during the year ended December 31, 2014, is presented below:
 
Shares
 
Weighted Average Grant Date Fair Value
Non-vested balance as of December 31, 2013
4,179,186

 
$
23.95

Granted
2,238,194

 
46.85

Vested
(1,953,094
)
 
21.62

Forfeited
(114,272
)
 
23.77

Non-vested balance as of December 31, 2014
4,350,014

 
$
36.86