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Goodwill And Other Intangibles
12 Months Ended
Dec. 31, 2017
Goodwill [Line Items]  
Goodwill And Other Intangibles
Goodwill and Other Intangibles
As of December 31, 2017 and 2016, Power had goodwill of $16 million related to the Bethlehem Energy Center facility. Power conducted an annual review for goodwill impairment in the fourth quarter of 2017 and concluded that goodwill continues to remain unimpaired. In addition to goodwill, as of December 31, 2017 and 2016, Power had intangible assets of $114 million and $98 million, respectively, related to emissions allowances and renewable energy credits. Emissions allowances and renewable energy credits are recorded at cost and evaluated for impairment at least annually. Emissions expense includes impairments of emissions allowances and costs for emissions, which is recorded as emissions occur. As load is served under contracts requiring energy from renewable sources, the related expense is recorded. The changes to Power’s intangible assets during 2016 and 2017 are presented in the following table:
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Emissions Allowances
 
Renewable Energy Credits
 
Total Other Intangibles
 
 
 
 
Millions
 
 
Balance as of January 1, 2016
 
$
62

 
$
40

 
$
102

 
 
Retirements
 
(6
)
 
(94
)
 
(100
)
 
 
Purchases
 

 
99

 
99

 
 
Sales and Transfers, net
 
(1
)
 
(1
)
 
(2
)
 
 
Impairments
 
(1
)
 

 
(1
)
 
 
Balance as of December 31, 2016
 
$
54

 
$
44

 
$
98

 
 
Retirements
 
(7
)
 
(93
)
 
(100
)
 
 
Purchases
 
27

 
90

 
117

 
 
Sales and Transfers, net
 

 
(1
)
 
(1
)
 
 
Balance as of December 31, 2017
 
$
74

 
$
40

 
$
114

 
 
 
 
 
 
 
 
 
 
Power [Member]  
Goodwill [Line Items]  
Goodwill And Other Intangibles
Goodwill and Other Intangibles
As of December 31, 2017 and 2016, Power had goodwill of $16 million related to the Bethlehem Energy Center facility. Power conducted an annual review for goodwill impairment in the fourth quarter of 2017 and concluded that goodwill continues to remain unimpaired. In addition to goodwill, as of December 31, 2017 and 2016, Power had intangible assets of $114 million and $98 million, respectively, related to emissions allowances and renewable energy credits. Emissions allowances and renewable energy credits are recorded at cost and evaluated for impairment at least annually. Emissions expense includes impairments of emissions allowances and costs for emissions, which is recorded as emissions occur. As load is served under contracts requiring energy from renewable sources, the related expense is recorded. The changes to Power’s intangible assets during 2016 and 2017 are presented in the following table:
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Emissions Allowances
 
Renewable Energy Credits
 
Total Other Intangibles
 
 
 
 
Millions
 
 
Balance as of January 1, 2016
 
$
62

 
$
40

 
$
102

 
 
Retirements
 
(6
)
 
(94
)
 
(100
)
 
 
Purchases
 

 
99

 
99

 
 
Sales and Transfers, net
 
(1
)
 
(1
)
 
(2
)
 
 
Impairments
 
(1
)
 

 
(1
)
 
 
Balance as of December 31, 2016
 
$
54

 
$
44

 
$
98

 
 
Retirements
 
(7
)
 
(93
)
 
(100
)
 
 
Purchases
 
27

 
90

 
117

 
 
Sales and Transfers, net
 

 
(1
)
 
(1
)
 
 
Balance as of December 31, 2017
 
$
74

 
$
40

 
$
114