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Intangibles, net (Tables)
12 Months Ended
Dec. 31, 2022
Intangible Assets, Net (Excluding Goodwill) [Abstract]  
Identified Intangible Assets by Major Classification

Identified intangible assets by major classification consist of the following (in millions):

 

 

 

 

 

 

Accumulated

 

 

Net Book

 

 

 

Gross

 

 

Amortization

 

 

Value

 

December 31, 2022:

 

 

 

 

 

 

 

 

 

Trade names and patents

 

$

4

 

 

$

 

 

$

4

 

Customer relationships

 

 

19

 

 

 

(2

)

 

 

17

 

Other

 

 

4

 

 

 

 

 

 

4

 

Total identified intangibles

 

$

27

 

 

$

(2

)

 

$

25

 

 

 

 

 

 

 

 

 

 

 

December 31, 2021:

 

 

 

 

 

 

 

 

 

Customer relationships

 

$

9

 

 

$

(1

)

 

$

8

 

Other

 

 

1

 

 

 

 

 

 

1

 

Total identified intangibles

 

$

10

 

 

$

(1

)

 

$

9

 

 

Schedule of Estimated Amortization of Intangible Assets Excluding Assets Held-for-Sale

Amortization expense was $2 million, $2 million and $4 million for the years ended December 31, 2022, 2021, and 2020, respectively. The following table represents the total estimated amortization of intangible assets for the five succeeding years (in millions):

For the Year Ending December 31,

 

Estimated Amortization Expense

 

2023

 

$

4

 

2024

 

 

4

 

2025

 

 

3

 

2026

 

 

3

 

2027

 

 

3