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NONCONTROLLING INTERESTS (Details) $ / shares in Units, $ in Millions | Mar. 20, 2019 CAD ($) $ / shares
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Noncontrolling Interest [Line Items] |
Dividends | $ 300
Noncontrolling interest, period decrease | 300
Preferred share investment |
Noncontrolling Interest [Line Items] |
Payments of dividends | $ 4
Preferred share investment | Preference Shares, Series 7 |
Noncontrolling Interest [Line Items] |
Preferred stock, dividend rate, percentage | 5.50%
Preferred stock, redemption price per share (in Canadian dollars per share) | $ / shares | $ 25.00
Preferred share investment | Preference Shares, Series 8 |
Noncontrolling Interest [Line Items] |
Preferred stock, dividend rate, percentage | 5.60%
Preferred stock, redemption price per share (in Canadian dollars per share) | $ / shares | $ 25.00

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