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Stock-Based Compensation (Tables)
 12 Months Ended
Dec. 31, 2019
Share-based Payment Arrangement, Noncash Expense [Abstract]  
Schedule of Components of Stock-Based Compensation
The following table summarizes the components of stock-based compensation for DTE Energy:
 
2019
 
2018
 
2017
 
(In millions)
Stock-based compensation expense
$
71

 
$
64

 
$
58

Tax benefit
$
13

 
$
13

 
$
23

Stock-based compensation cost capitalized in Property, plant, and equipment
$
16

 
$
11

 
$
9
Stock-based Compensation Expense
DTE Energy recorded compensation expense for performance share awards as follows:
 
2019
 
2018
 
2017
 
(In millions)
Compensation expense
$
60

 
$
53

 
$
47

Cash settlements(a)
$
19

 
$
13

 
$
15

Stock settlements(a)
$
79

 
$
39

 
$
66


_______________________________________
(a)
Sum of cash and stock settlements approximates the intrinsic value of the awards.
Schedule of Stock-based Compensation, Performance Shares Activity Rollforward
The following table summarizes DTE Energy’s performance share activity for the period ended December 31, 2019:
 
Performance Shares
 
Weighted Average
Grant Date
Fair Value
Balance at December 31, 2018
1,286,686

 
$
97.17

Grants
446,579

 
$
115.85

Forfeitures
(44,044
)
 
$
102.42

Payouts
(463,190
)
 
$
88.53

Balance at December 31, 2019
1,226,031

 
$
107.35
Schedule of Unrecognized Compensation Cost, Non-Vested Awards
As of December 31, 2019, DTE Energy's total unrecognized compensation cost related to non-vested stock incentive plan arrangements and the weighted average recognition period was as follows:
 
Unrecognized
Compensation
Cost
 
Weighted Average
to be Recognized
 
(In millions)
 
(In years)
Stock awards
$
19

 
1.57
Performance shares
62

 
1.05
 
$
81

 
1.17