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Accumulated Other Comprehensive Loss, Net | 6 Months Ended
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Mar. 31, 2023
Equity [Abstract] |
Accumulated Other Comprehensive Loss, Net | Accumulated Other Comprehensive Loss, Net Comprehensive income consists of net income and other gains and losses affecting stockholders’ equity that, under U.S. GAAP, are excluded from net income. Other comprehensive income includes net actuarial losses from defined benefit pension plans, foreign currency translation adjustments, and cash flow hedge gains or losses. See notes 1 and 4 for additional information on cash flow hedges. The following table summarizes the changes in accumulated other comprehensive loss, net for the six months ended March 31, 2023.
(in millions) |  | Foreign Currency Translation Adjustment |  | Pension Benefits Adjustment |  | Cash Flow Hedge |  |  |  | Accumulated Other Comprehensive Loss, net
Balances as of September 30, 2022 |  | $ | (34.4) |  |  | $ | (2.7) |  |  | $ | (53.5) |  |  |  |  | $ | (90.6) |
Other comprehensive income, net of tax |  | 11.4 |  |  | — |  |  | 29.0 |  |  |  |  | 40.4 |
Balances as of March 31, 2023 |  | $ | (23.0) |  |  | $ | (2.7) |  |  | $ | (24.5) |  |  |  |  | $ | (50.2) |

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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 https://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 https://asc.fasb.org/extlink&oid=126953954&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 https://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 https://asc.fasb.org/extlink&oid=120400993&loc=SL114874131-224263 + Details
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