XML 40 R43.htm IDEA: XBRL DOCUMENT v2.4.0.6
STOCK-BASED COMPENSATION (Tables)
 3 Months Ended
Mar. 31, 2013
STOCK-BASED COMPENSATION  
Schedule of stock-based compensation expense and the related deferred tax benefit recognized in income
(Millions)
2013
2012
Stock options
$
0.4

$
0.4

Performance stock rights
2.2

1.2

Restricted share units
2.8

2.1

Nonemployee director deferred stock units
0.3

1.0

Total stock-based compensation expense
$
5.7

$
4.7

Deferred income tax benefit
$
2.3

$
1.9

Schedule of weighted-average fair values per stock option granted during the period along with the assumptions incorporated into the valuation models
 
February 2013 Grant
Weighted-average fair value per option
$6.03
Expected term
5 years
Risk-free interest rate
0.18% – 2.11%
Expected dividend yield
5.33%
Expected volatility
24%
Summary of stock option activity and information related to outstanding and exercisable stock options
 
Stock Options
Weighted-Average
Exercise Price Per
Share
Weighted-Average
Remaining 
Contractual Life
(in Years)
Aggregate
Intrinsic Value
(Millions)
Outstanding at December 31, 2012
2,046,355

$
49.25

 

 

Granted
319,234

56.00

 
 
Exercised
(145,955
)
44.03

 
 
Outstanding at March 31, 2013
2,219,634

$
50.56

6.01

$
16.9

Exercisable at March 31, 2013
1,463,836

$
49.78

4.56

$
12.4

Disclosure of performance stock rights assumptions
 
2013
Risk-free interest rate
0.17% – 1.27%
Expected dividend yield
5.18% – 5.34%
Expected volatility
19% – 36%
Summary of the activity related to restricted share and restricted share unit awards (equity and liability awards)
Restricted Share
 Unit Awards
Weighted-Average Grant Date Fair Value
Outstanding at December 31, 2012
505,690

$
48.38

Granted
189,094

56.00

Dividend equivalents
5,818

52.20

Vested and released
(204,072
)
46.28

Forfeited
(1,507
)
48.47

Outstanding at March 31, 2013
495,023

$
52.20

Performance Stock Rights accounted for as Equity awards
  
Information related to Share based awards  
Summary of the activity related to performance stock rights
 
Performance
Stock Rights
Weighted-Average
 Fair Value *
Outstanding at December 31, 2012
108,314

$
65.38

Granted
22,636

48.50

Distributed
(94,758
)
72.36

Adjustment for final payout
21,867

72.36

Outstanding at March 31, 2013
58,059

$
50.04


*
Reflects the weighted-average fair value used to measure equity awards. Equity awards are measured using the grant date fair value or the fair value on the modification date.
Performance Stock Rights accounted as Liability awards
  
Information related to Share based awards  
Summary of the activity related to performance stock rights
 
Performance
Stock Rights
Outstanding at December 31, 2012
189,093

Granted
90,496

Distributed
(61,753
)
Adjustment for final payout
14,255

Outstanding at March 31, 2013
232,091