| Other Comprehensive Loss Changes in accumulated other comprehensive loss, net of tax, for the three and nine months ended Sept. 30, 2019 and 2018: | | | | | | | | | | | | | | | | | | | | | | | | | | | | Three Months Ended Sept. 30, 2019 | | Three Months Ended Sept. 30, 2018 | (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 | | $ | (75 | ) | | $ | (60 | ) | | $ | (135 | ) | | $ | (57 | ) | | $ | (65 | ) | | $ | (122 | ) | Other comprehensive (loss) before reclassifications (net of taxes of $(3), $0, $0 and $(1), respectively) | | (9 | ) | | — |
| | (9 | ) | | — |
| | (2 | ) | | (2 | ) | Losses reclassified from net accumulated other comprehensive loss: | | | | | | | |
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| |
|
| |
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| Interest rate derivatives (net of taxes of $0) (a) | | 1 |
| | — |
| | 1 |
| | 1 |
| | — |
| | 1 |
| Amortization of net actuarial loss (net of taxes of $0, $0, $0 and $1, respectively) (b) | | — |
| | 1 |
| | 1 |
| | — |
| | 4 |
| | 4 |
| Net current period other comprehensive income | | (8 | ) | | 1 |
| | (7 | ) | | 1 |
| | 2 |
| | 3 |
| Accumulated other comprehensive loss at Sept. 30 | | $ | (83 | ) | | $ | (59 | ) | | $ | (142 | ) | | $ | (56 | ) | | $ | (63 | ) | | $ | (119 | ) |
| | | | | | | | | | | | | | | | | | | | | | | | | | | | Nine Months Ended Sept. 30, 2019 | | Nine Months Ended Sept. 30, 2018 | (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 | | $ | (60 | ) | | $ | (64 | ) | | $ | (124 | ) | | $ | (58 | ) | | $ | (67 | ) | | $ | (125 | ) | Other comprehensive (loss) gain before reclassifications (net of taxes of $(9), $1, $0 and $(1), respectively) | | (25 | ) | | 2 |
| | (23 | ) | | — |
| | (2 | ) | | (2 | ) | Losses reclassified from net accumulated other comprehensive loss: | | | | | | | |
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| |
|
| |
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| Interest rate derivatives (net of taxes of $1, $0, $1 and $0, respectively) (a) | | 2 |
| | — |
| | 2 |
| | 2 |
| | — |
| | 2 |
| Amortization of net actuarial loss (net of taxes of $0, $1, $0 and $2, respectively) (b) | | — |
| | 3 |
| | 3 |
| | — |
| | 6 |
| | 6 |
| Net current period other comprehensive income | | (23 | ) | | 5 |
| | (18 | ) | | 2 |
| | 4 |
| | 6 |
| Accumulated other comprehensive loss at Sept. 30 | | $ | (83 | ) | | $ | (59 | ) | | $ | (142 | ) | | $ | (56 | ) | | $ | (63 | ) | | $ | (119 | ) |
| | (a) | Included in interest charges. |
(b) Included in the computation of net periodic pension and postretirement benefit costs.
|