XML 83 R34.htm IDEA: XBRL DOCUMENT v3.2.0.727
Stock-Based Compensation (Tables)
 6 Months Ended
Jun. 30, 2015
Share-based Compensation [Abstract]  
Schedule of Stock-based Compensation
The following table summarizes the components of stock-based compensation for DTE Energy:
 
Three Months Ended June 30,
 
Six Months Ended June 30,
 
2015
 
2014
 
2015
 
2014
 
(In millions)
Stock-based compensation expense
$
13

 
$
16

 
$
20

 
$
50

Tax benefit
$
5

 
$
6

 
$
8

 
$
19

Stock-based compensation cost capitalized in property, plant and equipment
$
2

 
$
2

 
$
3

 
$
7
Schedule of Stock Option Activity
The following table summarizes DTE Energy's stock option activity for the six months ended June 30, 2015:
 
Number of
Options
 
Weighted
Average
Exercise Price
 
Aggregate Intrinsic Value
(In millions)
Options outstanding at December 31, 2014
444,278

 
$
43.56

 
 
Exercised
(166,017
)
 
$
45.19

 
 
Forfeited or expired
(3,979
)
 
$
44.72

 
 
Options outstanding and exercisable at June 30, 2015
274,282

 
$
42.56

 
$
10
Schedule of Restricted Stock Activity
The following table summarizes DTE Energy’s restricted stock awards activity for the six months ended June 30, 2015:
 
Restricted
Stock
 
Weighted Average Grant Date Fair Value
Balance at December 31, 2014
416,318

 
$
62.82

Grants
139,800

 
$
83.56

Forfeitures
(7,008
)
 
$
74.14

Vested and issued
(151,788
)
 
$
54.56

Balance at June 30, 2015
397,322

 
$
73.07
Schedule of Performance Share Activity
The following table summarizes DTE Energy’s performance share activity for the six months ended June 30, 2015:
 
Performance
Shares
 
Weighted Average Grant Date Fair Value
Balance at December 31, 2014
1,554,697

 
$
69.32

Grants
442,096

 
$
83.99

Forfeitures
(26,112
)
 
$
75.99

Payouts
(532,700
)
 
$
—

Balance at June 30, 2015
1,437,981

 
$
75.78