v3.25.4

Other comprehensive income (loss) and Accumulated other comprehensive income (loss) - Components of Other Comprehensive Income (Loss) and Related Tax Effects (Details) - CAD ($) $ in Millions	12 Months Ended
	Dec. 31, 2025	Dec. 31, 2024	Dec. 31, 2023
Accumulated Other Comprehensive Income (Loss) [Line Items]
Before tax amount	$ (1,362)	$ 3,517	$ (705)
Income tax (expense) recovery	(80)	(219)	(4)
Net of tax amount	(1,442)	3,298	(709)
Realized loss on derivatives designated as cash flow hedges recognized in income
Net of tax amount	(6)	(40)
Translation of net investment in U.S. subsidiaries and equity method investees
Accumulated Other Comprehensive Income (Loss) [Line Items]
Before tax amount	(1,846)	2,920	(840)
Income tax (expense) recovery	0	0	0
Net of tax amount	(1,846)	2,920	(840)
Translation of U.S. dollar-denominated long-term debt designated as a hedge of the net investment in U.S. subsidiaries and equity method investees (Note 18)
Accumulated Other Comprehensive Income (Loss) [Line Items]
Before tax amount	293	(380)	194
Income tax (expense) recovery	(31)	36	(22)
Net of tax amount	262	(344)	172
Derivatives
Realized loss on derivatives designated as cash flow hedges recognized in income
Before tax amount	(1)	6	7
Income tax (expense) recovery	0	(1)	(2)
Net of tax amount	(1)	5	5
Change in pension and other benefits actuarial gains and losses
Accumulated Other Comprehensive Income (Loss) [Line Items]
Before tax amount	180	990	(57)
Income tax (expense) recovery	(48)	(257)	16
Net of tax amount	132	733	(41)
Change in prior service pension and other benefit costs
Accumulated Other Comprehensive Income (Loss) [Line Items]
Before tax amount	5	(11)	(16)
Income tax (expense) recovery	(1)	3	4
Net of tax amount	4	(8)	(12)
Equity accounted investments
Accumulated Other Comprehensive Income (Loss) [Line Items]
Before tax amount	7	(8)	7
Income tax (expense) recovery	0	0	0
Net of tax amount	$ 7	$ (8)	$ 7

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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CANADIAN PACIFIC KANSAS CITY LTD/CN 10-K