| Changes in Accumulated Other Comprehensive Income by Component |
Changes in AOCI attributable to controlling shareholders, net of tax, by component are as follows:
| | | | | | | | | | | | | | | | | | | For the three months ended June 30 | | (in millions of Canadian dollars) | Foreign currency net of hedging activities | Derivatives | Pension and post-
retirement defined
benefit plans | Equity accounted investments | Total | | Opening balance, April 1, 2026 | $ | 2,365 | | $ | 8 | | $ | (601) | | $ | 3 | | $ | 1,775 | | | Other comprehensive income before reclassifications | 649 | | — | | — | | 1 | | 650 | | | Amounts reclassified from AOCI | — | | (1) | | — | | — | | (1) | | | Net other comprehensive income (loss) | 649 | | (1) | | — | | 1 | | 649 | | | Balance as at June 30, 2026 | $ | 3,014 | | $ | 7 | | $ | (601) | | $ | 4 | | $ | 2,424 | | | Opening balance, April 1, 2025 | $ | 3,385 | | $ | 10 | | $ | (737) | | $ | (5) | | $ | 2,653 | | | Other comprehensive (loss) income before reclassifications | (1,707) | | — | | — | | 3 | | (1,704) | | | Amounts reclassified from AOCI | — | | 1 | | 1 | | — | | 2 | | | Net other comprehensive (loss) income | (1,707) | | 1 | | 1 | | 3 | | (1,702) | | | Balance as at June 30, 2025 | $ | 1,678 | | $ | 11 | | $ | (736) | | $ | (2) | | $ | 951 | |
| | | | | | | | | | | | | | | | | | | For the six months ended June 30 | | Foreign currency net of hedging activities | Derivatives | Pension and post-retirement defined benefit plans | Equity accounted investments | Total | | Opening balance, January 1, 2026 | $ | 1,829 | | $ | 9 | | $ | (602) | | $ | 2 | | $ | 1,238 | | | Other comprehensive income before reclassifications | 1,185 | | — | | — | | 2 | | 1,187 | | | Amounts reclassified from AOCI | — | | (2) | | 1 | | — | | (1) | | | Net other comprehensive income (loss) | 1,185 | | (2) | | 1 | | 2 | | 1,186 | | | Balance as at June 30, 2026 | $ | 3,014 | | $ | 7 | | $ | (601) | | $ | 4 | | $ | 2,424 | | | Opening balance, January 1, 2025 | $ | 3,413 | | $ | 10 | | $ | (738) | | $ | (5) | | $ | 2,680 | | | Other comprehensive (loss) income before reclassifications | (1,735) | | — | | — | | 3 | | (1,732) | | | Amounts reclassified from AOCI | — | | 1 | | 2 | | — | | 3 | | | Net other comprehensive (loss) income | (1,735) | | 1 | | 2 | | 3 | | (1,729) | | | Balance as at June 30, 2025 | $ | 1,678 | | $ | 11 | | $ | (736) | | $ | (2) | | $ | 951 | |
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