Subsequent Events (Details) - Saskatchewan, gas infrastructure - CAD ($) $ in Millions		12 Months Ended
Jan. 20, 2020	Dec. 31, 2019
Disclosure of non-adjusting events after reporting period [line items]
Total proceeds from the sale		$ 196.9
Other disposals of assets
Disclosure of non-adjusting events after reporting period [line items]
Total proceeds from the sale	$ 500.0

Line items represent concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes of the table.

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