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Comprehensive Income (Loss) (Tables) | 6 Months Ended
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Mar. 31, 2021
Equity [Abstract] |
Schedule of Accumulated Other Comprehensive Loss | The following summary sets forth the changes in the components of accumulated other comprehensive loss, net of related tax expense of approximately $2 million:
| Foreign Currency Translation Loss (a) |  | Minimum Pension Liability Adjustment |  | Deferred Gains (Losses) On Derivative Financial Instruments |  | Accumulated Other Comprehensive Loss, net
| (in millions)
Balances at September 30, 2020 | $ | (181) |  |  | $ | (12) |  |  | $ | (29) |  |  | $ | (222) |
Other comprehensive income | 7 |  |  | — |  |  | 6 |  |  | 13 |
Balances at March 31, 2021 | $ | (174) |  |  | $ | (12) |  |  | $ | (23) |  |  | $ | (209) |
______________________________________ (a)Includes historical foreign currency translation related to certain intra-entity transactions.

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