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PROVISIONS (Details) - CAD ($) $ in Millions | 12 Months Ended |
--- | --- | ---
Mar. 31, 2018 | Mar. 31, 2017
Reconciliation of changes in other provisions [abstract] |  |
Provisions, start | $ 82.3 |
Additions | 16.2 |
Acquisition of subsidiaries | 2.2 |
Amounts used | (33.0) |
Unused amounts reversed | (0.4) |
Exchange differences | 4.3 |
Provisions, end | 71.6 |
Less: current portion | 32.1 | $ 43.2
Long-term portion | 39.5 | $ 39.1
Restoration and removal |  |
Reconciliation of changes in other provisions [abstract] |  |
Provisions, start | 7.1 |
Additions | 0.0 |
Acquisition of subsidiaries | 1.6 |
Amounts used | (0.2) |
Unused amounts reversed | (0.2) |
Exchange differences | 0.3 |
Provisions, end | 8.6 |
Less: current portion | 1.6 |
Long-term portion | 7.0 |
Restructuring |  |
Reconciliation of changes in other provisions [abstract] |  |
Provisions, start | 21.2 |
Additions | 0.0 |
Acquisition of subsidiaries | 0.0 |
Amounts used | (5.6) |
Unused amounts reversed | 0.0 |
Exchange differences | 1.2 |
Provisions, end | 16.8 |
Less: current portion | 6.8 |
Long-term portion | 10.0 |
Legal |  |
Reconciliation of changes in other provisions [abstract] |  |
Provisions, start | 2.9 |
Additions | 1.0 |
Acquisition of subsidiaries | 0.0 |
Amounts used | (0.8) |
Unused amounts reversed | 0.0 |
Exchange differences | 0.2 |
Provisions, end | 3.3 |
Less: current portion | 2.6 |
Long-term portion | 0.7 |
Warranties |  |
Reconciliation of changes in other provisions [abstract] |  |
Provisions, start | 41.2 |
Additions | 12.0 |
Acquisition of subsidiaries | 0.0 |
Amounts used | (15.3) |
Unused amounts reversed | (0.1) |
Exchange differences | 2.2 |
Provisions, end | 40.0 |
Less: current portion | 18.9 |
Long-term portion | 21.1 |
Other |  |
Reconciliation of changes in other provisions [abstract] |  |
Provisions, start | 9.9 |
Additions | 3.2 |
Acquisition of subsidiaries | 0.6 |
Amounts used | (11.1) |
Unused amounts reversed | (0.1) |
Exchange differences | 0.4 |
Provisions, end | 2.9 |
Less: current portion | 2.2 |
Long-term portion | $ 0.7 |
Bottom of range |  |
Disclosure of other provisions [line items] |  |
Expected warranty claims on products, period | 1 year |
Top of range |  |
Disclosure of other provisions [line items] |  |
Expected warranty claims on products, period | 10 years |

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