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Cash and Cash Equivalents (Tables) | 12 Months Ended
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Dec. 31, 2020
Subclassifications of assets, liabilities and equities [abstract] |
Summary of Cash and Cash Equivalents | For the purpose of the consolidated statements of cash flows, cash and cash equivalents consist of the following:
| December 31 2020 | December 31 2019
| $ | $
Cash | 278.7 |  | 208.1 |
Cash in escrow | 4.5 |  | — |
Unrestricted investments | 6.3 |  | 15.4 |
Cash and deposits | 289.5 |  | 223.5 |
Bank indebtedness | (4.7) |  | (19.5) |
Cash and cash equivalents | 284.8 |  | 204.0 |

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