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Goodwill and Intangible Assets (Tables)
 12 Months Ended
Sep. 30, 2021
Goodwill And Intangible Assets Disclosure [Abstract]  
Schedule of Goodwill Balances The carrying amount of goodwill attributable to each reportable segment with goodwill balances and the changes in those balances during the period ended September 30, 2021 are as follows

 

 

 

Reinforcement

Materials

 

 

Performance

Chemicals

 

 

Total (1)

 

 

 

(In millions)

 

Balance at September 30, 2020

 

$

46

 

 

$

88

 

 

 

134

 

Foreign currency impact

 

 

2

 

 

 

4

 

 

 

6

 

Balance at September 30, 2021

 

$

48

 

 

$

92

 

 

$

140

 

 

 

(1)

The balance as of September 30, 2020 and September 30, 2021 includes $444 million of accumulated impairment losses associated with the goodwill of Purification Solutions segment. There were no accumulated impairment losses associated with the goodwill of the Reinforcement Materials or Performance Chemicals segments.

 
Schedule of Intangible Assets with Finite Lives

The following table provides information regarding the Company’s intangible assets with finite lives:

 

 

 

September 30, 2021

 

 

September 30, 2020

 

 

 

Gross

Carrying

Value

 

 

Accumulated

Amortization

 

 

Net

Intangible

Assets

 

 

Gross

Carrying

Value

 

 

Accumulated

Amortization

 

 

Net

Intangible

Assets

 

 

 

(In millions)

 

Developed technologies

 

$

62

 

 

$

(12

)

 

$

50

 

 

$

60

 

 

$

(8

)

 

$

52

 

Trademarks

 

 

11

 

 

 

(1

)

 

 

10

 

 

 

11

 

 

 

(1

)

 

 

10

 

Customer relationships

 

 

60

 

 

 

(20

)

 

 

40

 

 

 

56

 

 

 

(15

)

 

 

41

 

Total intangible assets

 

$

133

 

 

$

(33

)

 

$

100

 

 

$

127

 

 

$

(24

)

 

$

103