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

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+ Details

Debt and Borrowing Arrangements - Debt Repayments (Details) - Notes Payable $ in Millions, $ in Millions	6 Months Ended
	Jun. 30, 2026 CAD ($)	Jun. 30, 2026 USD ($)	Jun. 30, 2025 CAD ($)	Jun. 30, 2025 USD ($)
3.625% Notes Due February 2026
Debt Instrument [Line Items]
Interest Rate	3.625%	3.625%
Debt repayments	$ 222	$ 222
3.250% Notes Due March 2025
Debt Instrument [Line Items]
Interest Rate			3.25%	3.25%
Debt repayments			$ 600	$ 417
1.500% Notes Due May 2025
Debt Instrument [Line Items]
Interest Rate			1.50%	1.50%
Debt repayments				$ 750