XML 50 R32.htm IDEA: XBRL DOCUMENT v2.4.0.6
STOCK-BASED COMPENSATION PLANS (TABLES)
 12 Months Ended
Dec. 31, 2012
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]  
Schedule of Compensation Cost for Share-based Payment Arrangements, Allocation of Share-based Compensation Costs by Plan [Table Text Block]
The table below summarizes the components of total stock-based compensation for the years ended December 31 (in millions):
 
2012
 
2011
 
2010
Stock options
$
2

 
$
3

 
$
4

Stock awards
11

 
8

 
9

Deferred stock awards
1

 
—

 
—

Employee stock purchase plan
1

 
1

 
1

Stock-based compensation
$
15

 
$
12

 
$
14

 
 
 
 
 
 
Tax benefit related to stock-based compensation
$
5

 
$
4

 
$
5
Schedule of Unrecognized Compensation Cost, Nonvested Awards [Table Text Block]
Unrecognized stock-based compensation for non-vested options and awards and the weighted-average period the expense will be recognized for the year ended December 31, 2012 (in millions):
 
Amount
 
Weighted-
Average
Period
Stock options
$
2

 
0.7
Stock awards
5

 
0.4
Unrecognized stock-based compensation
$
7

 
0.5
Schedule of Share-based Payment Award, Stock Options, Valuation Assumptions [Table Text Block]
The fair value of each option grant was estimated on the date of grant using the Black-Scholes option-pricing model with the following weighted-average assumptions used for grants in the years ended December 31:
 
2012
 
2011
 
2010
Expected volatility
55
%
 
56
%
 
55
%
Expected term
6 years

 
6 years

 
6 years

Risk-free interest rate
1.08
%
 
2.26
%
 
2.78
%
Expected dividend yield
—

 
—

 
—

Weighted-average grant date fair value per share
$
17.23

 
$
16.40

 
$
9.03

Estimated fair value of options granted (millions)
$
2

 
$
2

 
$
2
Schedule of Share-based Compensation, Stock Options, Activity [Table Text Block]
The tables below summarize stock option activity for the year ended December 31, 2012:
 
Shares
 
Weighted-
Average
Exercise
Price
Per Share
 
Weighted-
Average
Contractual
Life (Years)
 
Aggregate
Intrinsic
Value (in
millions)
Outstanding, December 31, 2011
1,301,596

 
$
17.02

 
6.5
 
$
27

Granted
120,750

 
38.13

 
 
 
 
Exercised
(471,806
)
 
14.43

 
 
 
 
Forfeited or expired
(8,816
)
 
20.43

 
 
 
 
Outstanding, December 31, 2012
941,724

 
$
20.99

 
6.2
 
$
21

 
 
 
 
 
 
 
 
Exercisable, December 31, 2012
447,288

 
$
17.61

 
5.0
 
$
11

Vested or expected to vest, December 31, 2012
939,448

 
$
20.99

 
6.2
 
$
21


 
2012
 
2011
 
2010
Intrinsic value of option exercises
$
11

 
$
20

 
$
23

Cash received from stock option exercises
7

 
17

 
37

Tax benefit related to stock option exercises
4

 
8

 
9

Fair value of options vested
4

 
3

 
4
Schedule of Share-based Compensation, Restricted Stock Units Award Activity [Table Text Block]
The following table summarizes information about outstanding stock awards:
 
Number
of Units
 
Weighted-
Average
Grant
Date Fair
Value
 
Weighted-
Average
Contractual
Life (Years)
 
Aggregate
Intrinsic
Value (in
millions)
Non-vested, December 31, 2011
1,123,002

 
$
19.30

 
0.7
 
$
42

Granted
343,763

 
30.65

 
 
 
 

Vested
(689,906
)
 
15.32

 
 
 
 

Forfeited
(22,566
)
 
14.86

 
 
 
 

Non-vested, December 31, 2012
754,293

 
$
28.06

 
0.6
 
$
33