Changes in accumulated other comprehensive loss, net of tax: | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Three Months Ended Sept. 30, 2026 | | Three Months Ended Sept. 30, 2025 | | (Millions of Dollars) | | Gains and Losses on Cash Flow Hedges | | Defined Benefit Pension and Postretirement Items | | Total | | Gains and Losses on Cash Flow Hedges | | Defined Benefit Pension and Postretirement Items | | Total | | Accumulated other comprehensive loss at July 1 | | $ | (21) | | | $ | (37) | | | $ | (58) | | | $ | (27) | | | $ | (39) | | | $ | (66) | | Other comprehensive gain before reclassifications | | 7 | | | — | | | 7 | | | — | | | — | | | — | | | Losses reclassified from net accumulated other comprehensive loss: | | | | | | | | | | | | | Interest rate derivatives (a) | 1 | | | — | | | 1 | | | 1 | | | — | | | 1 | | | | | | | | | | | | | | | | Net current period other comprehensive income | | 8 | | | — | | | 8 | | | 1 | | | — | | | 1 | | | Accumulated other comprehensive loss at Sept. 30 | | $ | (13) | | | $ | (37) | | | $ | (50) | | | $ | (26) | | | $ | (39) | | | $ | (65) | |
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Nine Months Ended Sept. 30, 2026 | | Nine Months Ended Sept. 30, 2025 | | (Millions of Dollars) | | Gains and Losses on Cash Flow Hedges | | Defined Benefit Pension and Postretirement Items | | Total | | Gains and Losses on Cash Flow Hedges | | Defined Benefit Pension and Postretirement Items | | Total | | Accumulated other comprehensive loss at Jan. 1 | | $ | (25) | | | $ | (38) | | | $ | (63) | | | $ | (29) | | | $ | (39) | | | $ | (68) | | | Other comprehensive gain before reclassifications | | 10 | | | — | | | 10 | | | — | | | — | | | — | | | Losses reclassified from net accumulated other comprehensive loss: | | | | | | | | | | | | | Interest rate derivatives (a) | 2 | | | — | | | 2 | | | 3 | | | — | | | 3 | | Amortization of net actuarial losses (b) | | — | | | 1 | | | 1 | | | — | | | — | | | — | | | Net current period other comprehensive income | | 12 | | | 1 | | | 13 | | | 3 | | | — | | | 3 | | | Accumulated other comprehensive loss at Sept. 30 | | $ | (13) | | | $ | (37) | | | $ | (50) | | | $ | (26) | | | $ | (39) | | | $ | (65) | |
(a)Included in interest charges. (b)Included in the computation of net periodic pension and postretirement benefit costs. See Note 9 for further information.
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