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INCOME TAXES (Tables)
12 Months Ended
Mar. 31, 2022
Income Tax [Abstract]  
Effective Income Tax Rate Reconciliation
The reconciliation of income taxes at Canadian statutory rates with the reported income taxes is as follows:
20222021
Earnings (loss) before income taxes$153.6 $(87.2)
Canadian statutory income tax rates26.54 %26.53 %
Income taxes at Canadian statutory rates$40.8 $(23.1)
Effect of differences in tax rates in other jurisdictions(16.8)(5.8)
Unrecognized tax benefits and tax benefits not previously recognized2.2 3.2 
Non-deductible expenses (non-taxable revenues)1.5 (4.8)
Tax impact on after-tax profit of equity accounted investees(12.1)(1.1)
Prior years' tax adjustments(1.5)(6.3)
Other(10.5)(1.8)
Income tax expense (recovery)$3.6 $(39.7)
Schedule of Components of Income Tax Expense (Benefit)
Significant components of the provision for the income tax expense are as follows:
20222021
Current income tax expense (recovery):  
Current year$30.4 $8.6 
Prior years' tax adjustments3.1 (15.0)
Deferred income tax (recovery) expense:
Tax benefit not previously recognized used to reduce the deferred tax expense(4.1)(5.2)
Change in income tax rates(6.6)(0.8)
Origination and reversal of temporary differences(19.2)(27.3)
Income tax expense (recovery)$3.6 $(39.7)
Disclosure of temporary difference, unused tax losses and unused tax credits
During the year ended March 31, 2022, movements in temporary differences are as follows:
Foreign
Balancecurrency 
beginningRecognizedRecognized
Recognized
Business exchangeBalance
of yearin income in OCIin equitycombinationsdifferencesend of year
Non-capital loss carryforwards$48.1 $48.3 $— $— $0.2 $0.3 $96.9 
Unclaimed research & development expenditures70.8 15.9 — — (0.1)— 86.6 
Capital loss carryforwards1.1 1.0 — — 2.3 — 4.4 
Investment tax credits(76.4)(9.0)— — — — (85.4)
Property, plant and equipment and right-of-use of assets(75.2)(6.5)— — (4.6)0.1 (86.2)
Intangible assets(92.5)8.3 — — (5.9)(0.1)(90.2)
Deferred revenues, contract assets and contract liabilities1.5 (42.2)— — 41.6 0.3 1.2 
Foreign currency exchange difference(1.4)9.2 (4.9)— — (0.3)2.6 
Derivative financial assets and liabilities(6.5)6.2 0.6 — — (0.5)(0.2)
Defined benefit obligation57.2 4.3 (33.4)— — (0.9)27.2 
Amounts not currently deductible65.0 4.6 — — 13.5 — 83.1 
Other(10.3)(10.2)— 3.7 — 0.5 (16.3)
Net deferred tax assets (liabilities) $(18.6)$29.9 $(37.7)$3.7 $47.0 $(0.6)$23.7 

During the year ended March 31, 2021, movements in temporary differences are as follows:
          
Foreign
Balancecurrency 
beginningRecognizedRecognizedRecognizedBusinessexchangeBalance
of yearin income in OCIin equitycombinationsdifferencesend of year
Non-capital loss carryforwards$33.4 $12.0 $— — $2.4 $0.3 $48.1 
Unclaimed research & development expenditures64.4 5.8 — — 0.6 — 70.8 
Capital loss carryforwards1.4 (0.3)— — — — 1.1 
Investment tax credits(70.0)(6.4)— — — — (76.4)
Property, plant and equipment and right-of-use of assets(88.4)(5.8)— — 6.9 12.1 (75.2)
Intangible assets(93.0)9.0 — — (11.5)3.0 (92.5)
Deferred revenues, contract assets and contract liabilities(15.9)6.4 — — 11.2 (0.2)1.5 
Foreign currency exchange difference(2.3)2.7 (1.6)— — (0.2)(1.4)
Derivative financial assets and liabilities25.5 (18.9)(13.0)— — (0.1)(6.5)
Defined benefit obligation53.1 4.5 (0.3)— — (0.1)57.2 
Amounts not currently deductible42.7 33.2 — — (8.9)(2.0)65.0 
Other(17.0)(8.9)— 15.7 — (0.1)(10.3)
Net deferred tax (liabilities) assets $(66.1)$33.3 $(14.9)$15.7 $0.7 $12.7 $(18.6)
The non-capital losses incurred in various jurisdictions expire as follows:
Expiry date UnrecognizedRecognized
2023-2027$29.1 $18.4 
2028-204127.5 198.7 
No expiry date144.6 165.0 
 $201.2 $382.1