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SHARE-BASED PAYMENTS (Tables)
12 Months Ended
Mar. 31, 2024
Share-based Payment Arrangements [Abstract]  
Explanation of effect of share-based payments on entity's profit or loss
Share-based payments expense are as follows:
 20242023
Equity-settled plans
Stock option plan$7.0 $6.1 
RSU plan4.7 — 
PSU plan3.6 — 
Cash-settled plans
Stock purchase plan15.7 12.8 
DSU plans(1.1)2.6 
RSU plan2.2 6.6 
PSU plan2.4 0.4 
Total share-based payments expense$34.5 $28.5 
Impact of equity swap agreements (Note 30)
6.6 5.3 
Amount capitalized(1.0)(0.9)
Share-based payments expense, net of equity swap (Note 25)
$40.1 $32.9 
Carrying amount of share-based payments liabilities are as follows:

 20242023
Cash-settled plans
DSU plans$41.6 $48.4 
RSU plan9.1 13.4 
PSU plan10.5 12.7 
Total carrying amount of share-based payments liabilities$61.2 $74.5 
Current portion 9.9 11.3 
Non-current portion (Note 21)
$51.3 $63.2 
Disclosure of number and weighted average exercise prices of share options
Changes in outstanding stock options are as follows:
  2024   2023
  Weighted  Weighted
 Number ofaverage exerciseNumber ofaverage exercise
stock optionspricestock optionsprice
Stock options outstanding, beginning of year6,323,537 $26.63  6,783,444 $25.08 
Granted735,274 28.66  624,700 32.92 
Exercised(405,943)19.34  (882,167)18.49 
Forfeited(192,946)31.04  (202,440)29.28 
Stock options outstanding, end of year6,459,922 $27.19  6,323,537 $26.63 
Stock options exercisable, end of year4,533,751 $26.57  3,877,399 $25.62 
Disclosure of range of exercise prices of outstanding share options
As at March 31, 2024, summarized information about the stock options issued and outstanding is as follows:
 Options OutstandingOptions Exercisable
Weighted 
Number ofaverage remainingWeighted Number ofWeighted
Range ofstock optionscontractual lifeaverage exercisestock optionsaverage exercise
exercise pricesoutstanding (years)price  exercisableprice
$20.24 to $23.41
2,673,494 2.22$21.07 2,138,244 $21.20 
$26.78 to $29.62
1,739,349 3.2427.76 1,053,806 27.18 
$30.13 to $38.01
2,047,079 3.5834.70 1,341,701 34.66 
Total6,459,922 2.93$27.19 4,533,751 $26.57 
Disclosure of indirect measurement of fair value of goods or services received, other equity instruments granted during period
The assumptions used in the calculation of the fair value of the stock options on the grant date using the Black-Scholes option pricing model are as follows:
 2024 2023 
Common share price
$27.85 $30.87 
Exercise price
$28.66 $32.92 
Dividend yield
0.72 %0.65 %
Expected volatility
41.88 %42.12 %
Risk-free interest rate
3.73 %3.30 %
Expected stock option life
4.5 years4.5 years
Disclosure of number and weighted average exercise prices of other equity instruments
Changes in outstanding equity-settled RSUs are as follows:
20242023
Equity-settled RSUs outstanding, beginning of year — 
Granted304,142 — 
Cancelled(11,104)— 
Settled in cash(404)— 
Equity-settled RSUs outstanding, end of year292,634 — 
Equity-settled RSUs vested, end of year168,681 — 
Changes in outstanding equity-settled PSUs are as follows:
20242023
Equity-settled PSUs outstanding, beginning of year— — 
Granted812,603 — 
Cancelled(30,604)— 
Settled in cash(1,213)— 
Equity-settled PSUs outstanding, end of year780,786 — 
Equity-settled PSUs vested, end of year489,134 — 
Changes in outstanding DSUs are as follows:
20242023
DSUs outstanding, beginning of year1,586,384 1,557,007 
Granted118,667 181,288 
Redeemed(217,637)(151,911)
DSUs vested and outstanding, end of year1,487,414 1,586,384 
Changes in outstanding cash-settled RSUs are as follows:
20242023
Cash-settled RSUs outstanding, beginning of year646,231 607,039 
Granted 247,197 
Cancelled(12,369)(31,505)
Redeemed(229,825)(176,500)
Cash-settled RSUs outstanding, end of year404,037 646,231 
Cash-settled RSUs vested, end of year332,420 438,656 
Changes in outstanding cash-settled PSUs are as follows:
20242023
Cash-settled PSUs outstanding, beginning of year1,148,302 847,171 
Granted 817,218 
Cancelled(83,204)(48,601)
Redeemed(152,817)(467,486)
Cash-settled PSUs outstanding, end of year912,281 1,148,302 
Cash-settled PSUs vested, end of year711,745 687,120