Changes in accumulated other comprehensive loss, net of tax: | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Three Months Ended June 30, 2025 | | Three Months Ended June 30, 2024 | | (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 April 1 | | $ | (18) | | | $ | (1) | | | $ | (19) | | | $ | (19) | | | $ | (1) | | | $ | (20) | | | Losses reclassified from net accumulated other comprehensive loss: | | | | | | | | | | | | | Interest rate derivatives (a) | | 1 | | | — | | | 1 | | | 1 | | | — | | | 1 | | | | | | | | | | | | | | | | Net current period other comprehensive income | | 1 | | | — | | | 1 | | | 1 | | | — | | | 1 | | | Accumulated other comprehensive loss at June 30 | | $ | (17) | | | $ | (1) | | | $ | (18) | | | $ | (18) | | | $ | (1) | | | $ | (19) | |
(a) Included in interest charges. | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Six Months Ended June 30, 2025 | | Six Months Ended June 30, 2024 | | (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 | | $ | (18) | | | $ | (1) | | | $ | (19) | | | $ | (19) | | | $ | (1) | | | $ | (20) | | | Losses reclassified from net accumulated other comprehensive loss: | | | | | | | | | | | | | Interest rate derivatives (a) | | 1 | | | — | | | 1 | | | 1 | | | — | | | 1 | | | | | | | | | | | | | | | | Net current period other comprehensive income | | 1 | | | — | | | 1 | | | 1 | | | — | | | 1 | | | Accumulated other comprehensive loss at June 30 | | $ | (17) | | | $ | (1) | | | $ | (18) | | | $ | (18) | | | $ | (1) | | | $ | (19) | |
(a)Included in interest charges.
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