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DEBT FACILITIES - Long-term Debt (Details) - CAD ($) $ in Millions	Mar. 31, 2018	Mar. 31, 2017
Disclosure of detailed information about borrowings [line items]
Debt	$ 1,260.9	$ 1,255.4
Less: current portion of long-term debt	35.2	31.2
Less: current portion of long-term debt	17.0	20.7
Long-term debt, net	1,208.7	1,203.5
Recourse Debt
Disclosure of detailed information about borrowings [line items]
Debt	1,174.9	1,192.8
Non-recourse Debt
Disclosure of detailed information about borrowings [line items]
Debt	$ 86.0	$ 62.6

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- Definition

Long-term Debt, Current Portion, Excluding Current Portion of Finance Leases

+ References

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- Definition

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- Definition

The amount of outstanding funds that the entity is obligated to repay.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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Line items represent concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes of the table.

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- Definition

The non-current portion of non-current borrowings. [Refer: Borrowings]

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