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Stock-Based Compensation (Tables)
 12 Months Ended
Dec. 31, 2019
Disclosure Of Compensation Related Costs Sharebased Payments [Abstract]  
Summary of Activity Related to TEC Employee PSUs

 

A summary of the activity related to TEC employee PSUs is presented in the following table:

 

 

 

 

 

 

Weighted

 

 

Aggregate

 

 

 

Number of

 

 

Average Grant

 

 

Intrinsic

 

 

 

Units

 

 

Date Fair Value

 

 

Value

 

 

 

(Thousands)

 

 

(Per Unit)

 

 

(Millions)

 

Outstanding as of December 31, 2018

 

 

258

 

 

$

46.68

 

 

$

11

 

Granted including DRIP

 

 

135

 

 

 

43.20

 

 

 

6

 

Exercised

 

 

(4

)

 

 

42.95

 

 

 

0

 

Forfeited

 

 

(23

)

 

 

46.16

 

 

 

(1

)

Transferred (1)

 

 

138

 

 

 

45.41

 

 

 

8

 

Outstanding as of December 31, 2019

 

 

504

 

 

 

45.45

 

 

 

28

 

 

(1)

As the result of a reorganization of shared services functions, certain employees and their associated performance share units were transferred from TSI to TEC effective December 2019. The balance at December 31, 2019 is reflective of this transfer.