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Accumulated Other Comprehensive Income (Loss) | 12 Months Ended
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Mar. 31, 2016
Equity [Abstract] |
Accumulated Other Comprehensive Income (Loss) | 19. Accumulated Other Comprehensive Income (Loss) During the year ended 31 March 2016, there was US$0.3 million reclassifications out of Accumulated other comprehensive income (loss) related to pension and post-retirement adjustments.
(Millions of US dollars) |  | Pension and Post-Retirement Benefit |  |  | Cash Flow Hedges |  |  | Foreign Currency Translation |  |  | Total |
Balance at 31 March 2015 |  | $ | (0.3) |  |  | $ | 0.3 |  |  | $ | (0.4) |  |  | $ | (0.4) |
Other comprehensive loss before reclassifications |  |  | - |  |  |  | - |  |  |  | 0.9 |  |  |  | 0.9 |
Pension and post-retirement benefit adjustments |  |  | 0.3 |  |  |  | - |  |  |  | - |  |  |  | 0.3 |
Net current-period other comprehensive income |  |  | 0.3 |  |  |  | - |  |  |  | 0.9 |  |  |  | 1.2 |
Balance at 31 March 2016 |  | $ | - |  |  | $ | 0.3 |  |  | $ | 0.5 |  |  | $ | 0.8 |

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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/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section 45 -Paragraph 15 -URI http://asc.fasb.org/extlink&oid=36458714&loc=d3e689-108580 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section 45 -Paragraph 1A -URI http://asc.fasb.org/extlink&oid=36458714&loc=SL7669619-108580 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section 45 -Paragraph 12 -URI http://asc.fasb.org/extlink&oid=36458714&loc=d3e640-108580 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section 45 -Paragraph 17 -URI http://asc.fasb.org/extlink&oid=36458714&loc=d3e716-108580 Reference 5: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section 45 -Paragraph 16 -URI http://asc.fasb.org/extlink&oid=36458714&loc=d3e709-108580 Reference 6: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.3-04) -URI http://asc.fasb.org/extlink&oid=27012166&loc=d3e187085-122770 Reference 7: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section 45 -Paragraph 11 -URI http://asc.fasb.org/extlink&oid=36458714&loc=d3e637-108580 Reference 8: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section 45 -Paragraph 14 -URI http://asc.fasb.org/extlink&oid=36458714&loc=d3e681-108580 Reference 9: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Reclassification Adjustments -URI http://asc.fasb.org/extlink&oid=6522872 + Details
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