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PROVISIONS (Details) - CAD ($) $ in Millions | 12 Months Ended |
--- | --- | ---
Mar. 31, 2021 | Mar. 31, 2020
Reconciliation of changes in other provisions [abstract] |  |
Provisions, start | $ 57.8 |
Additions | 55.1 |
Business combinations (Note 4) | 6.5 |
Amount used | (32.8) |
Reversal of unused amounts | (4.9) |
Foreign currency exchange differences | 1.8 |
Provisions, end | 83.5 |
Current portion | 52.6 | $ 29.2
Non-current portion | 30.9 | $ 28.6
Restoration and removal |  |
Reconciliation of changes in other provisions [abstract] |  |
Provisions, start | 12.0 |
Additions | 0.1 |
Business combinations (Note 4) | 0.0 |
Amount used | 0.0 |
Reversal of unused amounts | (0.7) |
Foreign currency exchange differences | (0.5) |
Provisions, end | 10.9 |
Current portion | 0.2 |
Non-current portion | 10.7 |
Restructuring provision |  |
Reconciliation of changes in other provisions [abstract] |  |
Provisions, start | 1.4 |
Additions | 44.7 |
Business combinations (Note 4) | 0.0 |
Amount used | (16.7) |
Reversal of unused amounts | (0.6) |
Foreign currency exchange differences | 3.0 |
Provisions, end | 31.8 |
Current portion | 31.1 |
Non-current portion | 0.7 |
Legal proceedings provision |  |
Reconciliation of changes in other provisions [abstract] |  |
Provisions, start | 3.6 |
Additions | 2.6 |
Business combinations (Note 4) | 0.0 |
Amount used | (0.5) |
Reversal of unused amounts | 0.0 |
Foreign currency exchange differences | (0.4) |
Provisions, end | 5.3 |
Current portion | 5.2 |
Non-current portion | 0.1 |
Warranty provision |  |
Reconciliation of changes in other provisions [abstract] |  |
Provisions, start | 32.4 |
Additions | 7.5 |
Business combinations (Note 4) | 6.5 |
Amount used | (12.6) |
Reversal of unused amounts | (2.4) |
Foreign currency exchange differences | (0.2) |
Provisions, end | 31.2 |
Current portion | 13.2 |
Non-current portion | 18.0 |
Other |  |
Reconciliation of changes in other provisions [abstract] |  |
Provisions, start | 8.4 |
Additions | 0.2 |
Business combinations (Note 4) | 0.0 |
Amount used | (3.0) |
Reversal of unused amounts | (1.2) |
Foreign currency exchange differences | (0.1) |
Provisions, end | 4.3 |
Current portion | 2.9 |
Non-current portion | $ 1.4 |

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- Definition The increase in other provisions resulting from acquisitions through business combinations. [Refer: Business combinations [member]; Other provisions] + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Name IAS -Number 37 -IssueDate 2020-01-01 -Paragraph 84 -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=37&code=ifrs-tx-2020-en-r&anchor=para_84&doctype=Standard -URIDate 2020-01-01 + Details
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- Definition The amount of additional other provisions made. [Refer: Other provisions] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 37 -IssueDate 2020-01-01 -Paragraph 84 -Subparagraph b -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=37&code=ifrs-tx-2020-en-r&anchor=para_84_b&doctype=Standard -URIDate 2020-01-01 + Details
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- Definition The increase (decrease) in other provisions resulting from foreign currency exchange rate changes on provisions measured in a currency different from the entity's presentation currency. [Refer: Other provisions] + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Name IAS -Number 37 -IssueDate 2020-01-01 -Paragraph 84 -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=37&code=ifrs-tx-2020-en-r&anchor=para_84&doctype=Standard -URIDate 2020-01-01 + Details
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- Definition The amount of non-current provisions other than provisions for employee benefits. [Refer: Non-current provisions] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 1 -IssueDate 2020-01-01 -Paragraph 78 -Subparagraph d -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=1&code=ifrs-tx-2020-en-r&anchor=para_78_d&doctype=Standard -URIDate 2020-01-01 + Details
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- Definition The amount of provisions other than provisions for employee benefits. [Refer: Provisions] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 37 -IssueDate 2020-01-01 -Paragraph 84 -Subparagraph a -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=37&code=ifrs-tx-2020-en-r&anchor=para_84_a&doctype=Standard -URIDate 2020-01-01 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 1 -IssueDate 2020-01-01 -Paragraph 78 -Subparagraph d -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=1&code=ifrs-tx-2020-en-r&anchor=para_78_d&doctype=Standard -URIDate 2020-01-01 + Details
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- Definition The amount used (ie incurred and charged against the provision) for other provisions. [Refer: Other provisions] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 37 -IssueDate 2020-01-01 -Paragraph 84 -Subparagraph c -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=37&code=ifrs-tx-2020-en-r&anchor=para_84_c&doctype=Standard -URIDate 2020-01-01 + Details
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