DEBT FACILITIES (Tables)

12 Months Ended

Mar. 31, 2022

Debt and Financing Obligations [Abstract]

Disclosure of detailed information about borrowings

Long-term debt, net of transaction costs is as follows:


			Repayment					2022				2021
Notional amount				period		Current	Non-current			Current	Non-current
Unsecured senior notes
U.S. dollar, fixed rate - 3.60% to 4.90%	US$	960.5		2022-2034	$	17.4	$	1,176.5	$	17.2	$	1,202.3
Canadian dollar, fixed rate - 4.15%	$	27.1		2022-2027		2.9		24.2		2.9		27.1

Term loans
U.S. dollar, variable rate	US$	412.4		2022-2025		69.7		443.1		71.2		149.3
Canadian dollar, variable rate	$	35.2		2022-2028		5.6		29.4		5.6		35.1
Other				2022-2026		14.1		58.4		15.3		54.7
Lease liabilities
U.S. dollar				2022-2043		66.1		164.6		60.8		110.7
Other				2022-2043		32.9		131.4		27.0		148.7

R&D obligations
Canadian dollar				2022-2042		33.1		439.9		16.3		407.3
Revolving credit facilities
U.S. dollar, variable rate						—		336.9		—		—

Total long-term debt					$	241.8	$	2,804.4	$	216.3	$	2,135.2

Disclosure of reconciliation of liabilities arising from financing activities

Information on the change in liabilities for which cash flows have been classified as financing activities in the statement of cash flows are as follows:


	Unsecured								Revolving
		senior		Term		Lease		R&D		credit
		notes		loans		liabilities	obligations			facilities		Total
Net book value as at March 31, 2020	$	1,400.4	$	319.2	$	487.8	$	391.5	$	713.3	$	3,312.2
Changes from financing cash flows
Net repayment from borrowing under
revolving credit facilities		—		—		—		—		(705.6)		(705.6)
Proceeds from long-term debt		—		127.2		—		23.9		—		151.1
Repayment of long-term debt		—		(86.1)		—		—		—		(86.1)
Repayment of lease liabilities		—		—		(200.8)		—		—		(200.8)
Total changes from financing cash flows	$	—	$	41.1	$	(200.8)	$	23.9	$	(705.6)	$	(841.4)
Non-cash changes
Business combinations (Note 3)		—		0.8		72.2		—		—		73.0
Foreign currency exchange differences		(151.4)		(30.2)		(31.5)		—		(7.7)		(220.8)
Additions and remeasurement of lease liabilities		—		—		26.9		—		—		26.9
Accretion		—		—		—		20.7		—		20.7
Other		0.5		0.3		(7.4)		(12.5)		—		(19.1)
Total non-cash changes	$	(150.9)	$	(29.1)	$	60.2	$	8.2	$	(7.7)	$	(119.3)


Net book value as at March 31, 2021	$	1,249.5	$	331.2	$	347.2	$	423.6	$	—	$	2,351.5
Changes from financing cash flows
Net proceeds from borrowing under
revolving credit facilities		—		—		—		—		344.6		344.6
Proceeds from long-term debt		—		402.3		—		26.8		—		429.1
Repayment of long-term debt		(20.5)		(110.8)		—		(0.8)		—		(132.1)
Repayment of lease liabilities		—		—		(89.5)		—		—		(89.5)
Total changes from financing cash flows	$	(20.5)	$	291.5	$	(89.5)	$	26.0		344.6	$	552.1
Non-cash changes
Business combinations (Note 3)		—		0.2		34.9		—		—		35.1
Foreign currency exchange differences		(8.5)		(4.1)		(7.8)		—		(7.7)		(28.1)
Additions and remeasurement of lease liabilities		—		—		119.6		—		—		119.6
Accretion		—		—		—		25.3		—		25.3
Other		0.5		1.5		(9.4)		(1.9)		—		(9.3)
Total non-cash changes	$	(8.0)	$	(2.4)	$	137.3	$	23.4	$	(7.7)	$	142.6
Net book value as at March 31, 2022	$	1,221.0	$	620.3	$	395.0	$	473.0	$	336.9	$	3,046.2