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QUARTERLY FINANCIAL DATA (UNAUDITED) (Tables) | 12 Months Ended
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Dec. 31, 2023
Quarterly Financial Information Disclosure [Abstract] |
Schedule of Quarterly Financial Information |
| Q1 | Q2 | Q3 | Q4 | Total
(unaudited; millions of Canadian dollars, except per share amounts) |  |  |  |  |
2023 |  |  |  |  |
Operating revenues | 12,075 |  | 10,432 |  | 9,844 |  | 11,298 |  | 43,649 |
Operating income | 2,662 |  | 2,350 |  | 1,794 |  | 1,845 |  | 8,651 |
Earnings | 1,866 |  | 2,001 |  | 623 |  | 1,568 |  | 6,058 |
Earnings attributable to controlling interests | 1,817 |  | 1,935 |  | 621 |  | 1,818 |  | 6,191 |
Earnings attributable to common shareholders | 1,733 |  | 1,848 |  | 532 |  | 1,726 |  | 5,839 |
Earnings per common share |  |  |  |  |
Basic | 0.86 |  | 0.91 |  | 0.26 |  | 0.81 |  | 2.84 |
Diluted | 0.85 |  | 0.91 |  | 0.26 |  | 0.81 |  | 2.84 |
2022 |  |  |  |  |
Operating revenues | 15,097 |  | 13,215 |  | 11,573 |  | 13,424 |  | 53,309 |
Operating income/(loss) | 2,420 |  | 1,520 |  | 1,778 |  | (540) |  | 5,178 |
Earnings/(loss) | 2,057 |  | 607 |  | 1,383 |  | (1,109) |  | 2,938 |
Earnings/(loss) attributable to controlling interests | 2,029 |  | 595 |  | 1,362 |  | (983) |  | 3,003 |
Earnings/(loss) attributable to common shareholders | 1,927 |  | 450 |  | 1,279 |  | (1,067) |  | 2,589 |
Earnings/(loss) per common share |  |  |  |  |
Basic | 0.95 |  | 0.22 |  | 0.63 |  | (0.53) |  | 1.28 |
Diluted | 0.95 |  | 0.22 |  | 0.63 |  | (0.53) |  | 1.28 |

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- Definition Tabular disclosure of quarterly financial data. Includes, but is not limited to, financial information for fiscal quarters, cumulative effect of a change in accounting principle and earnings per share data. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name Accounting Standards Codification -Section 50 -Paragraph 1 -SubTopic 10 -Topic 270 -Publisher FASB -URI https://asc.fasb.org//1943274/2147482964/270-10-50-1 + Details
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