INTERIM CONSOLIDATED STATEMENTS OF CASH FLOWS - CAD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2024	Jun. 30, 2023	Jun. 30, 2024	Jun. 30, 2023
Operating activities
Net income	$ 903	$ 1,325	$ 1,677	$ 2,125
Reconciliation of net income to cash provided by operating activities:
Depreciation and amortization (Note 8)	473	410	940	635
Deferred income tax expense (recovery) (Note 4, 8)	18	(7,953)	35	(7,928)
Pension recovery and funding (Note 12)	(75)	(78)	(151)	(155)
Equity earnings of Kansas City Southern (Note 8, 9)	0	(26)	0	(230)
Remeasurement loss of Kansas City Southern (Note 8)	0	7,175	0	7,175
Dividend from Kansas City Southern (Note 9)	0	0	0	300
Settlement of foreign currency forward contracts (Note 11)	0	0	(65)	0
Other operating activities, net	(69)	28	(68)	(19)
Changes in non-cash working capital balances related to operations	28	11	(75)	(129)
Net cash provided by operating activities	1,278	892	2,293	1,774
Investing activities
Additions to properties	(808)	(628)	(1,335)	(1,034)
Additions to Meridian Speedway properties	(16)	(8)	(20)	(8)
Proceeds from sale of properties and other assets	9	12	10	16
Cash acquired on control of Kansas City Southern (Note 8)	0	298	0	298
Investment in government securities (Note 12)	0	(267)	0	(267)
Other investing activities, net	33	(24)	21	(24)
Net cash used in investing activities	(782)	(617)	(1,324)	(1,019)
Financing activities
Dividends paid	(178)	(176)	(355)	(353)
Issuance of Common Shares	20	19	42	37
Repayment of long-term debt, excluding commercial paper (Note 10)	(149)	(610)	(220)	(1,096)
Net (repayment) issuance of commercial paper (Note 10)	(157)	550	(362)	550
Acquisition-related financing fees (Note 12)	0	(15)	0	(15)
Other	0	(1)	0	(1)
Net cash used in financing activities	(464)	(233)	(895)	(878)
Effect of foreign currency fluctuations on foreign-denominated cash and cash equivalents	6	(7)	19	(3)
Cash position
Net increase (decrease) in cash and cash equivalents	38	35	93	(126)
Cash and cash equivalents at beginning of period	519	290	464	451
Cash and cash equivalents at end of period	557	325	557	325
Supplemental cash flow information
Income taxes paid	309	259	551	443
Interest paid	$ 161	$ 271	$ 406	$ 418