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INTANGIBLE ASSETS (Details) - CAD ($) $ in Millions | 12 Months Ended
--- | ---
Mar. 31, 2021 | Mar. 31, 2020
Reconciliation of changes in intangible assets and goodwill [abstract] |  |
Intangible assets, start | $ 2,056.5 | $ 2,027.9
Acquisition of subsidiaries | 219.8 | 31.9
Amortization | (109.3) | (106.1)
Impairment | (51.8) | (40.7)
Transfers and others | 2.5 | (6.8)
Foreign currency exchange differences | (117.9) | 49.7
Intangible assets, end | 2,055.8 | 2,056.5
Cost of sales |  |
Reconciliation of changes in intangible assets and goodwill [abstract] |  |
Amortization | 63.8 | 65.8
Research and development expenses |  |
Reconciliation of changes in intangible assets and goodwill [abstract] |  |
Amortization | 43.6 | 38.5
Selling, general and administrative expenses |  |
Reconciliation of changes in intangible assets and goodwill [abstract] |  |
Amortization | 1.9 | 1.8
Cost |  |
Reconciliation of changes in intangible assets and goodwill [abstract] |  |
Intangible assets, start | 2,700.9 |
Intangible assets, end | 2,750.7 | 2,700.9
Accumulated amortization and impairment |  |
Reconciliation of changes in intangible assets and goodwill [abstract] |  |
Intangible assets, start | (644.4) |
Intangible assets, end | (694.9) | (644.4)
Goodwill |  |
Reconciliation of changes in intangible assets and goodwill [abstract] |  |
Intangible assets, start | 1,085.3 | 1,067.7
Acquisition of subsidiaries | 169.0 | 20.1
Amortization | 0.0 | 0.0
Impairment | 0.0 | (37.5)
Transfers and others | 0.0 | 0.0
Foreign currency exchange differences | (81.1) | 35.0
Intangible assets, end | 1,173.2 | 1,085.3
Goodwill | Cost |  |
Reconciliation of changes in intangible assets and goodwill [abstract] |  |
Intangible assets, start | 1,122.8 |
Intangible assets, end | 1,210.7 | 1,122.8
Goodwill | Accumulated amortization and impairment |  |
Reconciliation of changes in intangible assets and goodwill [abstract] |  |
Intangible assets, start | (37.5) |
Intangible assets, end | (37.5) | (37.5)
Capitalized development costs |  |
Reconciliation of changes in intangible assets and goodwill [abstract] |  |
Intangible assets, start | 249.5 | 210.6
Acquisition of subsidiaries | 0.0 | 5.8
Amortization | (44.6) | (39.6)
Impairment | (41.4) | (3.2)
Transfers and others | 5.3 | (11.1)
Foreign currency exchange differences | (1.7) | 0.8
Intangible assets, end | 215.7 | 249.5
Capitalized development costs | Cost |  |
Reconciliation of changes in intangible assets and goodwill [abstract] |  |
Intangible assets, start | 454.2 |
Intangible assets, end | 433.6 | 454.2
Capitalized development costs | Accumulated amortization and impairment |  |
Reconciliation of changes in intangible assets and goodwill [abstract] |  |
Intangible assets, start | (204.7) |
Intangible assets, end | (217.9) | (204.7)
Customer relationships |  |
Reconciliation of changes in intangible assets and goodwill [abstract] |  |
Intangible assets, start | 312.0 | 322.8
Acquisition of subsidiaries | 47.9 | 13.0
Amortization | (29.7) | (34.7)
Impairment | (9.3) | 0.0
Transfers and others | (0.9) | 2.9
Foreign currency exchange differences | (22.5) | 8.0
Intangible assets, end | 297.5 | 312.0
Customer relationships | Cost |  |
Reconciliation of changes in intangible assets and goodwill [abstract] |  |
Intangible assets, start | 486.1 |
Intangible assets, end | 482.6 | 486.1
Customer relationships | Accumulated amortization and impairment |  |
Reconciliation of changes in intangible assets and goodwill [abstract] |  |
Intangible assets, start | (174.1) |
Intangible assets, end | (185.1) | (174.1)
Licenses |  |
Reconciliation of changes in intangible assets and goodwill [abstract] |  |
Intangible assets, start | 308.7 | 324.4
Acquisition of subsidiaries | 0.0 | (7.0)
Amortization | (17.6) | (12.8)
Impairment | 0.0 | 0.0
Transfers and others | (0.9) | (2.7)
Foreign currency exchange differences | (10.8) | 5.0
Intangible assets, end | 279.4 | 308.7
Licenses | Cost |  |
Reconciliation of changes in intangible assets and goodwill [abstract] |  |
Intangible assets, start | 326.2 |
Intangible assets, end | 313.6 | 326.2
Licenses | Accumulated amortization and impairment |  |
Reconciliation of changes in intangible assets and goodwill [abstract] |  |
Intangible assets, start | (17.5) |
Intangible assets, end | (34.2) | (17.5)
ERP and other software |  |
Reconciliation of changes in intangible assets and goodwill [abstract] |  |
Intangible assets, start | 73.0 | 70.7
Acquisition of subsidiaries | 0.7 | 0.0
Amortization | (13.4) | (14.1)
Impairment | 0.0 | 0.0
Transfers and others | (1.4) | 4.1
Foreign currency exchange differences | (0.5) | 0.3
Intangible assets, end | 65.2 | 73.0
ERP and other software | Cost |  |
Reconciliation of changes in intangible assets and goodwill [abstract] |  |
Intangible assets, start | 213.3 |
Intangible assets, end | 215.6 | 213.3
ERP and other software | Accumulated amortization and impairment |  |
Reconciliation of changes in intangible assets and goodwill [abstract] |  |
Intangible assets, start | (140.3) |
Intangible assets, end | (150.4) | (140.3)
Other intangible assets |  |
Reconciliation of changes in intangible assets and goodwill [abstract] |  |
Intangible assets, start | 28.0 | 31.7
Acquisition of subsidiaries | 2.2 | 0.0
Amortization | (4.0) | (4.9)
Impairment | (1.1) | 0.0
Transfers and others | 0.4 | 0.0
Foreign currency exchange differences | (1.3) | 0.6
Intangible assets, end | 24.8 | 28.0
Other intangible assets | Cost |  |
Reconciliation of changes in intangible assets and goodwill [abstract] |  |
Intangible assets, start | 98.3 |
Intangible assets, end | 94.6 | 98.3
Other intangible assets | Accumulated amortization and impairment |  |
Reconciliation of changes in intangible assets and goodwill [abstract] |  |
Intangible assets, start | (70.3) |
Intangible assets, end | (69.8) | (70.3)
Internally generated |  |
Reconciliation of changes in intangible assets and goodwill [abstract] |  |
Additions | 55.4 | 98.2
Internally generated | Goodwill |  |
Reconciliation of changes in intangible assets and goodwill [abstract] |  |
Additions | 0.0 | 0.0
Internally generated | Capitalized development costs |  |
Reconciliation of changes in intangible assets and goodwill [abstract] |  |
Additions | 48.6 | 86.2
Internally generated | Customer relationships |  |
Reconciliation of changes in intangible assets and goodwill [abstract] |  |
Additions | 0.0 | 0.0
Internally generated | Licenses |  |
Reconciliation of changes in intangible assets and goodwill [abstract] |  |
Additions | 0.0 | 0.0
Internally generated | ERP and other software |  |
Reconciliation of changes in intangible assets and goodwill [abstract] |  |
Additions | 6.8 | 12.0
Internally generated | Other intangible assets |  |
Reconciliation of changes in intangible assets and goodwill [abstract] |  |
Additions | 0.0 | 0.0
Not internally generated |  |
Reconciliation of changes in intangible assets and goodwill [abstract] |  |
Additions | 0.6 | 2.4
Not internally generated | Goodwill |  |
Reconciliation of changes in intangible assets and goodwill [abstract] |  |
Additions | 0.0 | 0.0
Not internally generated | Capitalized development costs |  |
Reconciliation of changes in intangible assets and goodwill [abstract] |  |
Additions | 0.0 | 0.0
Not internally generated | Customer relationships |  |
Reconciliation of changes in intangible assets and goodwill [abstract] |  |
Additions | 0.0 | 0.0
Not internally generated | Licenses |  |
Reconciliation of changes in intangible assets and goodwill [abstract] |  |
Additions | 0.0 | 1.8
Not internally generated | ERP and other software |  |
Reconciliation of changes in intangible assets and goodwill [abstract] |  |
Additions | 0.0 | 0.0
Not internally generated | Other intangible assets |  |
Reconciliation of changes in intangible assets and goodwill [abstract] |  |
Additions | $ 0.6 | $ 0.6

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