Generation, ComEd, PECO, BGE, PHI, Pepco, DPL and ACE did not have any reclassifications out of AOCI to Net income during the three months ended March 31, 2019 and 2018. The following tables present amounts reclassified out of AOCI to Net income for Exelon during the three months ended March 31, 2019 and 2018. Three Months Ended March 31, 2019 | | | | | | | | Details about AOCI components | | Items reclassified out of AOCI(a) | Affected line item in the Statement of Operations and Comprehensive Income | | | Exelon | | | Amortization of pension and other postretirement benefit plan items | | | | | Prior service costs(b) | | $ | 22 |
| | | Actuarial losses(b) | | (49 | ) | | | | | (27 | ) | | Total before tax | | | 7 |
| | Tax benefit | | | $ | (20 | ) | | Net of tax | | | | | | Total Reclassifications | | $ | (20 | ) | | Net of tax |
Three Months Ended March 31, 2018 | | | | | | | | Details about AOCI components | | Items reclassified out of AOCI(a) | Affected line item in the Statement of Operations and Comprehensive Income | | | Exelon | | | Amortization of pension and other postretirement benefit plan items | | | | | Prior service costs(b) | | $ | 23 |
| | | Actuarial losses(b) | | (83 | ) | | | | | (60 | ) | | Total before tax | | | 16 |
| | Tax benefit | | | $ | (44 | ) | | Net of tax | | | | | | Total Reclassifications | | $ | (44 | ) | | Net of tax |
_________ | | (a) | Amounts in parenthesis represent a decrease in net income. |
| | (b) | This AOCI component is included in the computation of net periodic pension and OPEB cost. See Note 14 — Retirement Benefits for additional information. |
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