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Non-controlling Interests - Summary of Financial Information About Company's Subsidiaries That Have Non-controlling Interests (Details) - CAD ($) $ in Thousands | Mar. 31, 2018 | May 12, 2017 | Mar. 31, 2017 | Mar. 31, 2016
--- | --- | --- | --- | ---
Disclosure Of Non Controlling Interests [Line Items] |  |  |  |
Cash and cash equivalents | $ 322,560 |  | $ 101,800 | $ 15,397
Investments in associates | 63,106 |  |  |
Property, plant and equipment | 303,682 |  | 96,270 | 44,984
Goodwill | 314,923 |  | 241,371 | $ 20,866
Accounts payable and accrued liabilities | (89,571) |  | (15,386) |
Deferred tax liability | (33,536) |  | (35,924) |
Non-controlling interests | (84,465) |  | 32 |
Equity attributable to Canopy Growth | (1,158,773) |  | $ (639,758) |
Canopy Rivers Corporation |  |  |  |
Disclosure Of Non Controlling Interests [Line Items] |  |  |  |
Cash and cash equivalents | 46,299 |  |  |
Amounts receivable | 519 |  |  |
Prepaid expenses and other assets | 2 |  |  |
Investments in associates | 13,225 |  |  |
Other financial assets | 57,491 |  |  |
Property, plant and equipment | 2,610 |  |  |
Preferred shares | 5,455 |  |  |
Accounts payable and accrued liabilities | (4,705) |  |  |
Deferred tax liability | (4,502) |  |  |
Non-controlling interests | (80,844) |  |  |
Equity attributable to Canopy Growth | 35,550 | $ (1,065) |  |
Tweed JA |  |  |  |
Disclosure Of Non Controlling Interests [Line Items] |  |  |  |
Cash and cash equivalents | 12 |  |  |
Subscription receivable | 1,769 |  |  |
Property, plant and equipment | 1,677 |  |  |
Goodwill | 1,939 |  |  |
Accounts payable and accrued liabilities | (451) |  |  |
Non-controlling interests | (1,686) |  |  |
Equity attributable to Canopy Growth | 3,260 |  |  |
Vert Mirabel |  |  |  |
Disclosure Of Non Controlling Interests [Line Items] |  |  |  |
Cash and cash equivalents | 508 |  |  |
Amounts receivable | 650 |  |  |
Prepaid expenses and other assets | 94 |  |  |
Property, plant and equipment | 6,818 |  |  |
Goodwill | 5,625 |  |  |
Accounts payable and accrued liabilities | (3,940) |  |  |
Other current liabilities | (88) |  |  |
Other long-term liabilities | (5,455) |  |  |
Non-controlling interests | (2,155) |  |  |
Equity attributable to Canopy Growth | $ 2,057 |  |  |

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