LEASES - Schedule of Undiscounted Lease Payments to be Received Under Finance Leases (Details) - CAD ($) $ in Millions	Mar. 31, 2020	Mar. 31, 2019
Disclosure of maturity analysis of finance lease payments receivable [line items]
Total undiscounted lease payments receivable	$ 235.4	$ 175.2
Unearned finance income	(71.4)	(66.0)
Discounted unguaranteed residual values of leased assets	(9.0)	(6.3)
Total investment in finance leases	155.0	102.9
Current portion (Note 9)	16.8	11.4
Non-current portion (Note 15)	138.2	91.5
Less than 1 year
Disclosure of maturity analysis of finance lease payments receivable [line items]
Total undiscounted lease payments receivable	19.5	13.4
Between 1 and 2 years
Disclosure of maturity analysis of finance lease payments receivable [line items]
Total undiscounted lease payments receivable	19.8	13.7
Between 2 and 3 years
Disclosure of maturity analysis of finance lease payments receivable [line items]
Total undiscounted lease payments receivable	27.4	11.4
Between 3 and 4 years
Disclosure of maturity analysis of finance lease payments receivable [line items]
Total undiscounted lease payments receivable	10.3	10.1
Between 4 and 5 years
Disclosure of maturity analysis of finance lease payments receivable [line items]
Total undiscounted lease payments receivable	11.6	13.3
More than 5 years
Disclosure of maturity analysis of finance lease payments receivable [line items]
Total undiscounted lease payments receivable	$ 146.8	$ 113.3

Net Investment In Finance Lease, Current

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- Definition

Net Investment In Finance Lease, Noncurrent

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- Definition

The amount of the discounted unguaranteed residual value of assets subject to finance leases. Unguaranteed residual value is the portion of the residual value of the underlying asset, the realisation of which by a lessor is not assured or is guaranteed solely by a party related to the lessor. Finance lease is a lease that transfers substantially all the risks and rewards incidental to ownership of an underlying asset.

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Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Note Effective 2019-01-01
-Name IFRS
-Number 16
-IssueDate 2018-01-01
-Paragraph 94
-URI http://eifrs.ifrs.org/eifrs/XBRL?type=IFRS&num=16&date=2018-03-01&anchor=para_94&doctype=Standard
-URIDate 2018-03-16

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- Definition

The gross investment in the finance lease discounted at the interest rate implicit in the lease. Finance lease is a lease that transfers substantially all the risks and rewards incidental to ownership of an underlying asset. Gross investment in the finance lease is the sum of: (a) the lease payments receivable by a lessor under a finance lease; and (b) any unguaranteed residual value accruing to the lessor. Interest rate implicit in the lease is the rate of interest that causes the present value of (a) the lease payments and (b) the unguaranteed residual value to equal to the sum of (i) the fair value of the underlying asset and (ii) the initial direct costs of the lessor.

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- Definition

The amount of undiscounted finance lease payments to be received. Finance lease is a lease that transfers substantially all the risks and rewards incidental to ownership of an underlying asset.

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- Definition

The amount of unearned finance income relating to the finance lease payments receivable. Finance lease is a lease that transfers substantially all the risks and rewards incidental to ownership of an underlying asset. [Refer: Finance income]

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