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Fair Value Measurements (Tables) | 12 Months Ended
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Dec. 31, 2019
Fair Value Measurement [Abstract] |
Summary of Fair Values of Financial Assets Measured at Fair Value on Recurring Basis | The fair values of our financial assets and liabilities measured at fair value on a recurring basis at December 31, 2019 and 2018, are summarized in the following table:
(CAD$ in millions) |  | 2019 |  | 2018
|  | Level 1 |  |  | Level 2 |  |  | Level 3 |  |  | Total |  |  | Level 1 |  |  | Level 2 |  |  | Level 3 |  |  | Total |
Financial assets |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Cash equivalents |  | $ | 877 |  |  | $ | — |  |  | $ | — |  |  | $ | 877 |  |  | $ | 1,296 |  |  | $ | — |  |  | $ | — |  |  | $ | 1,296 |
Marketable equity securities |  | 53 |  |  | — |  |  | 36 |  |  | 89 |  |  | 44 |  |  | — |  |  | 36 |  |  | 80 |
Debt securities |  | 104 |  |  | — |  |  | 2 |  |  | 106 |  |  | 90 |  |  | — |  |  | 3 |  |  | 93 |
Settlement receivables |  | — |  |  | 465 |  |  | — |  |  | 465 |  |  | — |  |  | 557 |  |  | — |  |  | 557 |
Derivative instruments and embedded derivatives |  | — |  |  | 29 |  |  | — |  |  | 29 |  |  | — |  |  | 86 |  |  | — |  |  | 86 |
|  | $ | 1,034 |  |  | $ | 494 |  |  | $ | 38 |  |  | $ | 1,566 |  |  | $ | 1,430 |  |  | $ | 643 |  |  | $ | 39 |  |  | $ | 2,112 |
Financial liabilities |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Derivative instruments and embedded derivatives |  | $ | — |  |  | $ | 33 |  |  | $ | — |  |  | $ | 33 |  |  | $ | — |  |  | $ | 45 |  |  | $ | — |  |  | $ | 45 |
Settlement payables |  | $ | — |  |  | $ | 16 |  |  | $ | — |  |  | $ | 16 |  |  | $ | — |  |  | $ | 45 |  |  | $ | — |  |  | $ | 45 |
|  | $ | — |  |  | $ | 49 |  |  | $ | — |  |  | $ | 49 |  |  | $ | — |  |  | $ | 90 |  |  | $ | — |  |  | $ | 90 |
Summary of Fair Values of Financial Liabilities Measured at Fair Value on Recurring Basis | The fair values of our financial assets and liabilities measured at fair value on a recurring basis at December 31, 2019 and 2018, are summarized in the following table:
(CAD$ in millions) |  | 2019 |  | 2018
|  | Level 1 |  |  | Level 2 |  |  | Level 3 |  |  | Total |  |  | Level 1 |  |  | Level 2 |  |  | Level 3 |  |  | Total |
Financial assets |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Cash equivalents |  | $ | 877 |  |  | $ | — |  |  | $ | — |  |  | $ | 877 |  |  | $ | 1,296 |  |  | $ | — |  |  | $ | — |  |  | $ | 1,296 |
Marketable equity securities |  | 53 |  |  | — |  |  | 36 |  |  | 89 |  |  | 44 |  |  | — |  |  | 36 |  |  | 80 |
Debt securities |  | 104 |  |  | — |  |  | 2 |  |  | 106 |  |  | 90 |  |  | — |  |  | 3 |  |  | 93 |
Settlement receivables |  | — |  |  | 465 |  |  | — |  |  | 465 |  |  | — |  |  | 557 |  |  | — |  |  | 557 |
Derivative instruments and embedded derivatives |  | — |  |  | 29 |  |  | — |  |  | 29 |  |  | — |  |  | 86 |  |  | — |  |  | 86 |
|  | $ | 1,034 |  |  | $ | 494 |  |  | $ | 38 |  |  | $ | 1,566 |  |  | $ | 1,430 |  |  | $ | 643 |  |  | $ | 39 |  |  | $ | 2,112 |
Financial liabilities |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Derivative instruments and embedded derivatives |  | $ | — |  |  | $ | 33 |  |  | $ | — |  |  | $ | 33 |  |  | $ | — |  |  | $ | 45 |  |  | $ | — |  |  | $ | 45 |
Settlement payables |  | $ | — |  |  | $ | 16 |  |  | $ | — |  |  | $ | 16 |  |  | $ | — |  |  | $ | 45 |  |  | $ | — |  |  | $ | 45 |
|  | $ | — |  |  | $ | 49 |  |  | $ | — |  |  | $ | 49 |  |  | $ | — |  |  | $ | 90 |  |  | $ | — |  |  | $ | 90 |

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