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Goodwill and Other Intangibles (CenterPoint Energy and CERC)
9 Months Ended
Sep. 30, 2018
Goodwill and Intangible Assets Disclosure [Abstract]  
Goodwill and Other Intangibles (CenterPoint Energy and CERC) [Text Block]
Goodwill and Other Intangibles (CenterPoint Energy and CERC)

CenterPoint Energy’s and CERC’s goodwill by reportable business segment as of both September 30, 2018 and December 31, 2017 is as follows:
 
(in millions)
Natural Gas Distribution
$
746

Energy Services (1)
110

Other Operations
11

Total
$
867


(1) Amount presented is net of the accumulated goodwill impairment charge of $252 million recorded in 2012.

CenterPoint Energy and CERC perform goodwill impairment tests at least annually and evaluate goodwill when events or changes in circumstances indicate that its carrying value may not be recoverable. The impairment evaluation for goodwill is performed by comparing the fair value of each reporting unit with the carrying amount of the reporting unit, including goodwill. The estimated fair value of the reporting unit is primarily determined on the basis of discounted cash flows. If the carrying amount is in excess of the estimated fair value of the reporting unit, then the excess amount is the impairment charge that should be recorded, not to exceed the carrying amount of goodwill. See Note 2 for further discussion.

CenterPoint Energy and CERC performed the annual goodwill impairment test in the third quarter of 2018 and determined that no goodwill impairment charge was required for any reporting unit, which approximate the reportable segments.

The tables below present information on CenterPoint Energy’s and CERC’s other intangible assets recorded in Other non-current assets on the Condensed Consolidated Balance Sheets.
 
 
 
September 30, 2018
 
December 31, 2017
 
Useful Lives
 
Gross Carrying Amount
 
Accumulated Amortization
 
Net Balance
 
Gross Carrying Amount
 
Accumulated Amortization
 
Net Balance
 
(in years)
 
(in millions)
Customer relationships
15
 
$
86

 
$
(26
)
 
$
60

 
$
86

 
$
(21
)
 
$
65

Covenants not to compete
4
 
4

 
(2
)
 
2

 
4

 
(2
)
 
2

Other
Various
 
15

 
(10
)
 
5

 
15

 
(8
)
 
7

Total
 
 
$
105

 
$
(38
)
 
$
67

 
$
105

 
$
(31
)
 
$
74


 
Three Months Ended September 30,
 
Nine Months Ended September 30,
 
2018
 
2017
 
2018
 
2017
 
(in millions)
Amortization expense of intangible assets
$
2

 
$
2

 
$
7

 
$
5