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Goodwill And Other Intangibles (Tables)
 12 Months Ended
Dec. 31, 2019
PSEG Power LLC  
Goodwill [Line Items]  
Schedule of Intangibles The changes to PSEG Power’s intangible assets during 2018 and 2019 are as follows:
 
 
 
 
 
 
 
 
 
 
 
 
Emissions Allowances
 
RECs
 
Total Other Intangibles
 
 
 
 
Millions
 
 
Balance as of January 1, 2018
 
$
74

 
$
40

 
$
114

 
 
Retirements
 
(26
)
 
(90
)
 
(116
)
 
 
Purchases
 
36

 
110

 
146

 
 
Sales and Transfers, net
 
—

 
(1
)
 
(1
)
 
 
Balance as of December 31, 2018
 
$
84

 
$
59

 
$
143

 
 
Retirements
 
(6
)
 
(83
)
 
(89
)
 
 
Purchases
 
26

 
72

 
98

 
 
Sales and Transfers, net
 
—

 
(3
)
 
(3
)
 
 
Balance as of December 31, 2019
 
$
104

 
$
45

 
$
149