INTERIM CONSOLIDATED STATEMENTS OF CASH FLOWS $ in Millions, $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2023 CAD ($)	Jun. 30, 2022 CAD ($)	Jun. 30, 2023 CAD ($)	Jun. 30, 2022 CAD ($)
Operating activities
Net income	$ 1,325	$ 765	$ 2,125	$ 1,355
Reconciliation of net income to cash provided by operating activities:
Depreciation and amortization	410	211	635	421
Deferred tax (recovery) expense (Note 4)	(7,953)	114	(7,928)	113
Pension recovery and funding (Note 14)	(78)	(72)	(155)	(144)
Equity earnings of Kansas City Southern (Note 8, 9)	(26)	(208)	(230)	(406)
Remeasurement loss of Kansas City Southern (Note 8)	7,175	0	7,175	0
Dividend from Kansas City Southern (Note 9)	0	0	300	334
Other operating activities, net	28	(16)	(19)	(99)
Change in non-cash working capital balances related to operations	11	(87)	(129)	(254)
Cash provided by operating activities	892	707	1,774	1,320
Investing activities
Additions to properties	(628)	(370)	(1,034)	(596)
Additions to Meridian Speedway properties	(8)	0	(8)	0
Proceeds from sale of properties and other assets	12	11	16	26
Cash acquired on control of Kansas City Southern (Note 8)	298	0	298	0
Investment in government securities (Note 12)	(267)	0	(267)	0
Other	(24)	(3)	(24)	2
Cash used in investing activities	(617)	(362)	(1,019)	(568)
Financing activities
Dividends paid	(176)	(176)	(353)	(353)
Issuance of Common Shares	19	1	37	9
Repayment of long-term debt, excluding commercial paper (Note 12)	(610)	(10)	(1,096)	(552)
Repayment of term loan	0	(132)	0	(132)
Net issuance of commercial paper (Note 12)	550	20	550	340
Acquisition-related financing fees (Note 12)	(15)	0	(15)	0
Other	(1)	0	(1)	0
Cash used in financing activities	(233)	(297)	(878)	(688)
Effect of foreign currency fluctuations on foreign-denominated cash and cash equivalents	(7)	8	(3)	8
Cash position
Increase (decrease) in cash, cash equivalents, and restricted cash	35	56	(126)	72
Cash, cash equivalents, and restricted cash at beginning of period	290	98	451	82
Cash and cash equivalents at end of period	325	154	325	154
Supplemental disclosures of cash flow information:
Income taxes paid	259	93	443	252
Interest paid	$ 271	$ 169	$ 418	$ 319