DEBT FACILITIES (Tables)

12 Months Ended

Mar. 31, 2020

Debt and Financing Obligations [Abstract]

Disclosure of detailed information about borrowings

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



							2020				2019
Notional amount			Maturity		Current	Non-current			Current	Non-current
Unsecured senior notes
U.S. dollar, fixed rate - 3.60% to 4.90%	US$	975.0	2024-2034	$	—	$	1,370.4	$	80.1	$	1,163.1
Canadian dollar, fixed rate - 4.15%	$	30.0	2024-2027		—		30.0		45.0		30.0
Canadian dollar, variable rate					—		—		50.0		—
Term loans
U.S. dollar, variable rate	US$	183.1	2021-2025		79.7		177.1		8.0		259.2
Canadian dollar, variable rate	$	46.5	2020-2028		5.6		40.7		5.6		46.3
Other					8.2		7.9		8.4		24.8
Lease liabilities
U.S. dollar			2020-2041		91.7		214.4		61.4		179.3
Other			2020-2043		21.0		160.7		1.4		17.2
R&D obligations
Canadian dollar			2021-2039		—		391.5		4.2		344.3
Revolving credit facilities
U.S. dollar, variable rate			2023		—		423.3		—		—
Canadian dollar, variable rate			2023		—		290.0		—		—
Total long-term debt				$	206.2	$	3,106.0	$	264.1	$	2,064.2

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, 2018	$	684.1		$	131.1		$	145.4		$	300.3		$	—	$	1,260.9
Changes from financing cash flows
Proceeds from long-term debt		663.7			255.1			—			36.5			—		955.3
Repayment of long-term debt		—			(70.6	)		—			(2.1	)		—		(72.7	)
Repayment of lease liabilities		—			—			(22.0	)		—			—		(22.0	)
Total changes from financing cash flows	$	663.7		$	184.5		$	(22.0	)	$	34.4		$	—	$	860.6
Non-cash changes
Business combinations (Note 3)		—			15.2			137.6			—			—		152.8
Foreign currency exchange differences		20.1			4.2			5.0			—			—		29.3
Interests		—			—			0.8			13.8			—		14.6
Other		0.3			17.3			(7.5	)		—			—		10.1
Total non-cash changes	$	20.4		$	36.7		$	135.9		$	13.8		$	—	$	206.8
Net book value as at March 31, 2019	$	1,368.2		$	352.3		$	259.3		$	348.5		$	—	$	2,328.3
Impact of adopting IFRS 16 (Note 2)		—			—			265.8			—					265.8
Net book value as at April 1, 2019	$	1,368.2		$	352.3		$	525.1		$	348.5		$	—	$	2,594.1
Changes from financing cash flows
Net proceeds from borrowing under
revolving credit facilities		—			—			—			—			708.2		708.2
Proceeds from long-term debt		131.7			5.5			—			30.4			—		167.6
Repayment of long-term debt		(175.4	)		(53.4	)		—			(4.2	)		—		(233.0	)
Repayment of lease liabilities		—			—			(79.8	)		—			—		(79.8	)
Total changes from financing cash flows	$	(43.7	)	$	(47.9	)	$	(79.8	)	$	26.2			708.2	$	563.0
Non-cash changes
Business combinations (Note 3)		—			—			1.6			—			—		1.6
Foreign currency exchange differences		75.2			14.7			13.8			—			5.1		108.8
Additions and remeasurement
of lease liabilities		—			—			27.3			—			—		27.3
Interests		—			—			—			16.8			—		16.8
Other		0.7			0.1			(0.2	)		—			—		0.6
Total non-cash changes	$	75.9		$	14.8		$	42.5		$	16.8		$	5.1	$	155.1
Net book value as at March 31, 2020	$	1,400.4		$	319.2		$	487.8		$	391.5		$	713.3	$	3,312.2