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Financial assets and liabilities - Financial Instruments Measured at Fair Value (Details) - CAD ($) $ in Millions | Jun. 30, 2020 | Dec. 31, 2019
--- | --- | ---
Disclosure of financial assets [line items] |  |
Assets | $ 61,191 | $ 60,146
Liabilities | $ (40,054) | $ (38,738)
Repurchase obligation of trust ownership percentage | 9.00% | 9.00%
Maple Leaf Sports & Entertainment Ltd. (MLSE) financial liability |  |
Disclosure of financial assets [line items] |  |
Liabilities | $ (138) | $ (135)
Maple Leaf Sports & Entertainment Ltd. (MLSE) financial liability | QUOTED PRICES IN ACTIVE MARKETS FOR IDENTICAL ASSETS (LEVEL 1) |  |
Disclosure of financial assets [line items] |  |
Liabilities | 0 | 0
Maple Leaf Sports & Entertainment Ltd. (MLSE) financial liability | OBSERVABLE MARKET DATA (LEVEL 2) |  |
Disclosure of financial assets [line items] |  |
Liabilities | 0 | 0
Maple Leaf Sports & Entertainment Ltd. (MLSE) financial liability | NON-OBSERVABLE MARKET INPUTS (LEVEL 3) |  |
Disclosure of financial assets [line items] |  |
Liabilities | (138) | (135)
Publicly-traded and privately-held investments |  |
Disclosure of financial assets [line items] |  |
Assets | 122 | 129
Publicly-traded and privately-held investments | QUOTED PRICES IN ACTIVE MARKETS FOR IDENTICAL ASSETS (LEVEL 1) |  |
Disclosure of financial assets [line items] |  |
Assets | 2 | 2
Publicly-traded and privately-held investments | OBSERVABLE MARKET DATA (LEVEL 2) |  |
Disclosure of financial assets [line items] |  |
Assets | 0 | 0
Publicly-traded and privately-held investments | NON-OBSERVABLE MARKET INPUTS (LEVEL 3) |  |
Disclosure of financial assets [line items] |  |
Assets | 120 | 127
Derivative financial instruments | Derivative financial instruments |  |
Disclosure of financial assets [line items] |  |
Net assets held for sale | 522 | 165
Derivative financial instruments | Derivative financial instruments | QUOTED PRICES IN ACTIVE MARKETS FOR IDENTICAL ASSETS (LEVEL 1) |  |
Disclosure of financial assets [line items] |  |
Net assets held for sale | 0 | 0
Derivative financial instruments | Derivative financial instruments | OBSERVABLE MARKET DATA (LEVEL 2) |  |
Disclosure of financial assets [line items] |  |
Net assets held for sale | 522 | 165
Derivative financial instruments | Derivative financial instruments | NON-OBSERVABLE MARKET INPUTS (LEVEL 3) |  |
Disclosure of financial assets [line items] |  |
Net assets held for sale | 0 | 0
Other | Other |  |
Disclosure of financial assets [line items] |  |
Net assets held for sale | 91 | 71
Other | Other | QUOTED PRICES IN ACTIVE MARKETS FOR IDENTICAL ASSETS (LEVEL 1) |  |
Disclosure of financial assets [line items] |  |
Net assets held for sale | 2 | 1
Other | Other | OBSERVABLE MARKET DATA (LEVEL 2) |  |
Disclosure of financial assets [line items] |  |
Net assets held for sale | 147 | 128
Other | Other | NON-OBSERVABLE MARKET INPUTS (LEVEL 3) |  |
Disclosure of financial assets [line items] |  |
Net assets held for sale | $ (58) | $ (58)

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