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v3.19.2

INCOME TAXES - Movements In Temporary Differences (Details) - CAD ($) $ in Millions | 12 Months Ended
--- | ---
Mar. 31, 2019 | Mar. 31, 2018
Disclosure of temporary difference, unused tax losses and unused tax credits [line items] |  |
Deferred tax liability (asset), start | $ (123.5) | $ (170.0)
Deferred tax expense (income) recognised in profit or loss | 23.1 | 33.9
Income tax relating to components of other comprehensive income | 1.1 | 11.6
Increase (decrease) through business combinations, deferred tax liability (asset) | 27.2 | (3.9)
Increase (decrease) through net exchange differences, deferred tax liability (asset) | (3.9) | 4.9
Deferred tax liability (asset), end | (76.0) | (123.5)
Non-capital loss carryforwards |  |
Disclosure of temporary difference, unused tax losses and unused tax credits [line items] |  |
Deferred tax liability (asset), start | 45.7 | 50.5
Deferred tax expense (income) recognised in profit or loss | (9.6) | (5.4)
Income tax relating to components of other comprehensive income | 0.0 | 0.0
Increase (decrease) through business combinations, deferred tax liability (asset) | 0.8 | 0.0
Increase (decrease) through net exchange differences, deferred tax liability (asset) | (1.7) | 0.6
Deferred tax liability (asset), end | 35.2 | 45.7
Capital loss carryforwards |  |
Disclosure of temporary difference, unused tax losses and unused tax credits [line items] |  |
Deferred tax liability (asset), start | 0.0 |
Deferred tax expense (income) recognised in profit or loss | 0.7 |
Income tax relating to components of other comprehensive income | 0.0 |
Increase (decrease) through business combinations, deferred tax liability (asset) | 0.0 |
Increase (decrease) through net exchange differences, deferred tax liability (asset) | 0.0 |
Deferred tax liability (asset), end | 0.7 | 0.0
Intangible assets |  |
Disclosure of temporary difference, unused tax losses and unused tax credits [line items] |  |
Deferred tax liability (asset), start | (87.8) | (84.1)
Deferred tax expense (income) recognised in profit or loss | 5.7 | 12.5
Income tax relating to components of other comprehensive income | 0.0 | 0.0
Increase (decrease) through business combinations, deferred tax liability (asset) | (6.2) | (14.5)
Increase (decrease) through net exchange differences, deferred tax liability (asset) | 0.9 | (1.7)
Deferred tax liability (asset), end | (87.4) | (87.8)
Amounts not currently deductible |  |
Disclosure of temporary difference, unused tax losses and unused tax credits [line items] |  |
Deferred tax liability (asset), start | 47.6 | 48.5
Deferred tax expense (income) recognised in profit or loss | (2.3) | (6.4)
Income tax relating to components of other comprehensive income | 0.0 | 0.0
Increase (decrease) through business combinations, deferred tax liability (asset) | (0.7) | 5.9
Increase (decrease) through net exchange differences, deferred tax liability (asset) | (3.0) | (0.4)
Deferred tax liability (asset), end | 41.6 | 47.6
Deferred revenue |  |
Disclosure of temporary difference, unused tax losses and unused tax credits [line items] |  |
Deferred tax liability (asset), start | 20.3 | 25.8
Deferred tax expense (income) recognised in profit or loss | (4.5) | (6.1)
Income tax relating to components of other comprehensive income | 0.0 | 0.0
Increase (decrease) through business combinations, deferred tax liability (asset) | 14.3 | 0.3
Increase (decrease) through net exchange differences, deferred tax liability (asset) | (1.6) | 0.3
Deferred tax liability (asset), end | 28.5 | 20.3
Tax benefit carryover |  |
Disclosure of temporary difference, unused tax losses and unused tax credits [line items] |  |
Deferred tax liability (asset), start | 3.1 | 6.0
Deferred tax expense (income) recognised in profit or loss | (1.7) | (2.8)
Income tax relating to components of other comprehensive income | 0.0 | 0.0
Increase (decrease) through business combinations, deferred tax liability (asset) | 0.0 | 0.0
Increase (decrease) through net exchange differences, deferred tax liability (asset) | 0.2 | (0.1)
Deferred tax liability (asset), end | 1.6 | 3.1
Unclaimed research and development expenditures |  |
Disclosure of temporary difference, unused tax losses and unused tax credits [line items] |  |
Deferred tax liability (asset), start | 37.4 | 20.2
Deferred tax expense (income) recognised in profit or loss | 7.7 | 17.2
Income tax relating to components of other comprehensive income | 0.0 | 0.0
Increase (decrease) through business combinations, deferred tax liability (asset) | 0.0 | 0.0
Increase (decrease) through net exchange differences, deferred tax liability (asset) | 0.0 | 0.0
Deferred tax liability (asset), end | 45.1 | 37.4
Investment tax credits |  |
Disclosure of temporary difference, unused tax losses and unused tax credits [line items] |  |
Deferred tax liability (asset), start | (64.6) | (60.0)
Deferred tax expense (income) recognised in profit or loss | (9.5) | (4.6)
Income tax relating to components of other comprehensive income | 0.0 | 0.0
Increase (decrease) through business combinations, deferred tax liability (asset) | 0.0 | 0.0
Increase (decrease) through net exchange differences, deferred tax liability (asset) | 0.0 | 0.0
Deferred tax liability (asset), end | (74.1) | (64.6)
Property, plant and equipment |  |
Disclosure of temporary difference, unused tax losses and unused tax credits [line items] |  |
Deferred tax liability (asset), start | (104.6) | (148.9)
Deferred tax expense (income) recognised in profit or loss | 16.4 | 33.1
Income tax relating to components of other comprehensive income | 0.0 | 0.0
Increase (decrease) through business combinations, deferred tax liability (asset) | 18.3 | 4.5
Increase (decrease) through net exchange differences, deferred tax liability (asset) | (3.3) | 6.7
Deferred tax liability (asset), end | (73.2) | (104.6)
Unrealized (gains) losses on foreign exchange |  |
Disclosure of temporary difference, unused tax losses and unused tax credits [line items] |  |
Deferred tax liability (asset), start | (13.9) | (16.0)
Deferred tax expense (income) recognised in profit or loss | (1.3) | 1.0
Income tax relating to components of other comprehensive income | 1.0 | 1.3
Increase (decrease) through business combinations, deferred tax liability (asset) | 0.0 | (0.1)
Increase (decrease) through net exchange differences, deferred tax liability (asset) | 0.3 | (0.1)
Deferred tax liability (asset), end | (13.9) | (13.9)
Financial instruments |  |
Disclosure of temporary difference, unused tax losses and unused tax credits [line items] |  |
Deferred tax liability (asset), start | (0.3) | (3.0)
Deferred tax expense (income) recognised in profit or loss | (0.7) | 1.3
Income tax relating to components of other comprehensive income | 1.2 | 1.4
Increase (decrease) through business combinations, deferred tax liability (asset) | 0.0 | 0.0
Increase (decrease) through net exchange differences, deferred tax liability (asset) | 0.0 | 0.0
Deferred tax liability (asset), end | 0.2 | (0.3)
Government participation |  |
Disclosure of temporary difference, unused tax losses and unused tax credits [line items] |  |
Deferred tax liability (asset), start | (27.3) | (27.4)
Deferred tax expense (income) recognised in profit or loss | 19.9 | 0.1
Income tax relating to components of other comprehensive income | 0.0 | 0.0
Increase (decrease) through business combinations, deferred tax liability (asset) | 0.0 | 0.0
Increase (decrease) through net exchange differences, deferred tax liability (asset) | 0.0 | 0.0
Deferred tax liability (asset), end | (7.4) | (27.3)
Employee benefit plans |  |
Disclosure of temporary difference, unused tax losses and unused tax credits [line items] |  |
Deferred tax liability (asset), start | 51.6 | 39.6
Deferred tax expense (income) recognised in profit or loss | 0.7 | 3.1
Income tax relating to components of other comprehensive income | (1.1) | 8.9
Increase (decrease) through business combinations, deferred tax liability (asset) | 0.7 | 0.0
Increase (decrease) through net exchange differences, deferred tax liability (asset) | 3.5 | 0.0
Deferred tax liability (asset), end | 55.4 | 51.6
Percentage-of-completion versus completed contract |  |
Disclosure of temporary difference, unused tax losses and unused tax credits [line items] |  |
Deferred tax liability (asset), start | (28.9) | (19.6)
Deferred tax expense (income) recognised in profit or loss | 1.7 | (8.9)
Income tax relating to components of other comprehensive income | 0.0 | 0.0
Increase (decrease) through business combinations, deferred tax liability (asset) | 0.0 | 0.0
Increase (decrease) through net exchange differences, deferred tax liability (asset) | 0.7 | (0.4)
Deferred tax liability (asset), end | (26.5) | (28.9)
Other |  |
Disclosure of temporary difference, unused tax losses and unused tax credits [line items] |  |
Deferred tax liability (asset), start | (1.8) | (1.6)
Deferred tax expense (income) recognised in profit or loss | (0.1) | (0.2)
Income tax relating to components of other comprehensive income | 0.0 | 0.0
Increase (decrease) through business combinations, deferred tax liability (asset) | 0.0 | 0.0
Increase (decrease) through net exchange differences, deferred tax liability (asset) | 0.1 | 0.0
Deferred tax liability (asset), end | $ (1.8) | $ (1.8)

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