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Comprehensive Income (Loss) | 6 Months Ended
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Mar. 31, 2021
Equity [Abstract] |
Comprehensive Income (Loss) | Comprehensive Income (Loss) Comprehensive income (loss), which is reported in the accompanying consolidated statements of equity (deficit), consists of net income and other gains and losses affecting equity that, under U.S. GAAP, are excluded from net income. For the Company, the components of other comprehensive income (loss) primarily consist of foreign currency translation gains and losses, minimum pension liabilities, and deferred gains and losses on financial instruments designated as hedges under ASC 815, Derivatives and Hedging, which include foreign exchange contracts. 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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- Definition The entire disclosure for comprehensive income, which includes, but is not limited to, 1) the amount of income tax expense or benefit allocated to each component of other comprehensive income, including reclassification adjustments, 2) the reclassification adjustments for each classification of other comprehensive income and 3) the ending accumulated balances for each component of comprehensive income. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -URI http://asc.fasb.org/topic&trid=2134417 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section S99 -Paragraph 2 -Subparagraph (SX 210.5-03(21)) -URI http://asc.fasb.org/extlink&oid=120395209&loc=SL114868664-224227 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 220 -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-04(23)) -URI http://asc.fasb.org/extlink&oid=120399700&loc=SL114874048-224260 Reference 4: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 944 -SubTopic 220 -Section S99 -Paragraph 1 -Subparagraph (SX 210.7-04(19)) -URI http://asc.fasb.org/extlink&oid=120400993&loc=SL114874131-224263 + Details
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