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IMPAIRMENT OF NON-FINANCIAL ASSETS (Tables)

12 Months Ended

Mar. 31, 2023

Disclosure of Impairment of Assets [Abstract]

Disclosure of reconciliation of changes in goodwill


									Capitalized																		Technology,									Other
(amounts in millions)									development						Customer												software						intangible
			Goodwill									costs			relationships						Licenses						and ERP									assets						Total
Net book value as at March 31, 2021			$			1,173.2			$			215.7			$			297.5			$			279.4			$			71.5			$			18.5			$			2,055.8
Additions – internal development						—						55.6						—						—						35.0						—						90.6

Business combinations (Note 2)						1,316.8						2.2						323.7						—						169.7						—						1,812.4


Amortization						—						(32.7)						(40.7)						(16.0)						(18.3)						(1.8)						(109.5)
Impairment						—						(4.2)						—						—						—						—						(4.2)
Cloud computing transition adjustment (Note 5)						—						—						—						—						(13.4)						—						(13.4)
Transfers and others						—						(2.1)						(0.1)						(0.1)						0.4						—						(1.9)
Foreign currency exchange differences						(25.7)						(0.1)						(5.4)						(0.5)						(1.2)						(0.6)						(33.5)
Net book value as at March 31, 2022			$			2,464.3			$			234.4			$			575.0			$			262.8			$			243.7			$			16.1			$			3,796.3
Additions – internal development						—						87.1						—						—						39.3						—						126.4

Business combinations (Note 2)						35.8						—						(11.8)						—						3.0						—						27.0
Amortization						—						(31.1)						(44.4)						(16.1)						(29.5)						(1.8)						(122.9)
Impairment reversal – net						—						6.3						—						—						—						—						6.3

Transfers and others						—						(3.7)						(1.3)						—						(0.9)						0.4						(5.5)
Foreign currency exchange differences						163.2						1.7						36.8						6.7						14.0						0.8						223.2
Net book value as at March 31, 2023			$			2,663.3			$			294.7			$			554.3			$			253.4			$			269.6			$			15.5			$			4,050.8



									Capitalized																		Technology,									Other
									development						Customer												software						intangible
			Goodwill									costs			relationships						Licenses									and ERP						assets						Total
Cost			$			2,501.8			$			480.9			$			794.7			$			312.8			$			445.4			$			51.1			$			4,586.7
Accumulated amortization and impairment						(37.5)						(246.5)						(219.7)						(50.0)						(201.7)						(35.0)						(790.4)
Net book value as at March 31, 2022			$			2,464.3			$			234.4			$			575.0			$			262.8			$			243.7			$			16.1			$			3,796.3
Cost			$			2,699.7			$			573.3			$			829.6			$			320.9			$			513.2			$			54.0			$			4,990.7
Accumulated amortization and impairment						(36.4)						(278.6)						(275.3)						(67.5)						(243.6)						(38.5)						(939.9)
Net book value as at March 31, 2023			$			2,663.3			$			294.7			$			554.3			$			253.4			$			269.6			$			15.5			$			4,050.8