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ACCUMULATED OTHER COMPREHENSIVE INCOME (Tables) | 12 Months Ended
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Mar. 31, 2018
Disclosure of analysis of other comprehensive income by item [abstract] |
Analysis of other comprehensive income |
|  |  |  |  |  |  |  |  |  |  |  |  |  | Share in the other |  |  |  |  |
|  |  |  |  |  |  |  |  |  | Net changes in |  |  | comprehensive |  |  |  |  |
|  | Foreign currency |  |  | Net changes in |  |  | available-for-sale |  |  | income of equity |  |  |  |  |
|  | translation |  |  | cash flow hedges |  |  | financial instruments |  |  | accounted investees |  |  |  |  | Total |
|  | 2018 |  |  | 2017 |  |  | 2018 |  |  | 2017 |  |  | 2018 |  |  | 2017 |  |  | 2018 |  |  | 2017 |  |  | 2018 |  |  | 2017 |
Balances, beginning of year |  | $ | 148.6 |  |  | $ | 180.0 |  |  | $ | (4.3 | ) |  | $ | (15.6 | ) |  | $ | 0.5 |  |  | $ | 0.7 |  |  | $ | 48.9 |  |  | $ | 55.6 |  |  | $ | 193.7 |  |  | $ | 220.7 |
OCI |  | 81.7 |  |  | (31.4 | ) |  | (0.5 | ) |  | 11.3 |  |  | 0.1 |  |  | (0.2 | ) |  | (12.7 | ) |  | (6.7 | ) |  | 68.6 |  |  | (27.0 | )
Balances, end of year |  | $ | 230.3 |  |  | $ | 148.6 |  |  | $ | (4.8 | ) |  | $ | (4.3 | ) |  | $ | 0.6 |  |  | $ | 0.5 |  |  | $ | 36.2 |  |  | $ | 48.9 |  |  | $ | 262.3 |  |  | $ | 193.7 |

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- Definition The entire disclosure of the analysis of other comprehensive income by item. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 1 -IssueDate 2017-01-01 -Paragraph 106A -URI http://eifrs.ifrs.org/eifrs/XBRL?type=IAS&num=1&date=2017-03-01&anchor=para_106A&doctype=Standard -URIDate 2017-03-09 + Details
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