INTERIM CONSOLIDATED STATEMENTS OF CASH FLOWS $ in Millions, $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2023 CAD ($)	Sep. 30, 2022 CAD ($)	Sep. 30, 2023 CAD ($)	Sep. 30, 2022 CAD ($)
Operating activities
Net income	$ 780	$ 891	$ 2,905	$ 2,246
Reconciliation of net income to cash provided by operating activities:
Depreciation and amortization	451	213	1,086	634
Deferred income tax expense (recovery) (Note 4)	3	38	(7,925)	151
Pension recovery and funding (Note 14)	(76)	(74)	(231)	(218)
Equity earnings of Kansas City Southern (Note 8, 9)	0	(221)	(230)	(627)
Remeasurement loss of Kansas City Southern (Note 8)	0	0	7,175	0
Dividend from Kansas City Southern (Note 9)	0	259	300	593
Settlement of Mexican tax audits (Note 4)	(75)	0	(75)	0
Other operating activities, net	11	(3)	(8)	(102)
Change in non-cash working capital balances related to operations	(67)	(1)	(196)	(255)
Cash provided by operating activities	1,027	1,102	2,801	2,422
Investing activities
Additions to properties	(733)	(422)	(1,767)	(1,018)
Additions to Meridian Speedway properties	(19)	0	(27)	0
Proceeds from sale of properties and other assets	12	11	28	37
Cash acquired on control of Kansas City Southern (Note 8)	0	0	298	0
Investment in government securities (Note 12)	0	0	(267)	0
Other	(2)	1	(26)	3
Cash used in investing activities	(742)	(410)	(1,761)	(978)
Financing activities
Dividends paid	(177)	(177)	(530)	(530)
Issuance of Common Shares	13	9	50	18
Repayment of long-term debt, excluding commercial paper (Note 12)	(12)	(7)	(1,108)	(559)
Repayment of term loan	0	(504)	0	(636)
Net repayment (issuance) of commercial paper (Note 12)	(147)	(42)	403	298
Acquisition-related financing fees (Note 12)	(2)	0	(17)	0
Other	1	0	0	0
Cash used in financing activities	(324)	(721)	(1,202)	(1,409)
Effect of foreign currency fluctuations on foreign-denominated cash and cash equivalents	8	13	5	21
Cash position
(Decrease) increase in cash, cash equivalents, and restricted cash	(31)	(16)	(157)	56
Cash, cash equivalents, and restricted cash at beginning of period	325	154	451	82
Cash and cash equivalents at end of period	294	138	294	138
Supplemental disclosures of cash flow information:
Income taxes paid	205	67	648	319
Interest paid	$ 152	$ 148	$ 570	$ 467