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v3.23.1

Accumulated Other Comprehensive Loss | 12 Months Ended
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Mar. 31, 2023
Equity [Abstract] |
Accumulated Other Comprehensive Loss | Accumulated Other Comprehensive Loss Accumulated other comprehensive loss is comprised of the following at 31 March 2023:
(Millions of US dollars) |  | Cash Flow Hedges |  | Pension Actuarial (Loss) Gain |  | Foreign Currency Translation Adjustments |  | Total
Balance at 31 March 2022 |  | $ | 0.2 |  |  | $ | (0.3) |  |  | $ | (21.9) |  |  | $ | (22.0) |
Other comprehensive gain (loss) |  | — |  |  | 2.1 |  |  | (33.4) |  |  | (31.3) |
Balance at 31 March 2023 |  | $ | 0.2 |  |  | $ | 1.8 |  |  | $ | (55.3) |  |  | $ | (53.3) |

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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://www.xbrl.org/2003/role/disclosureRef -Topic 944 -SubTopic 220 -Name Accounting Standards Codification -Section S99 -Paragraph 1 -Subparagraph (SX 210.7-04(19)) -Publisher FASB -URI https://asc.fasb.org//1943274/2147483586/944-220-S99-1 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Topic 220 -SubTopic 10 -Name Accounting Standards Codification -Section S99 -Paragraph 2 -Subparagraph (SX 210.5-03(21)) -Publisher FASB -URI https://asc.fasb.org//1943274/2147483621/220-10-S99-2 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Topic 942 -SubTopic 220 -Name Accounting Standards Codification -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-04(23)) -Publisher FASB -URI https://asc.fasb.org//1943274/2147483589/942-220-S99-1 Reference 4: http://fasb.org/us-gaap/role/ref/legacyRef -Topic 220 -Name Accounting Standards Codification -Publisher FASB -URI https://asc.fasb.org//220/tableOfContent + Details
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