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Acquisitions, Development and Divestitures | 6 Months Ended
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Jun. 30, 2025
Business Combination [Abstract] |
Mergers, Acquisitions and Dispositions Disclosures | 8. Acquisitions, Developments and Divestitures Acquisitions (PPL) Acquisition of Narragansett Electric On May 25, 2022, PPL Rhode Island Holdings acquired 100% of the outstanding shares of common stock of Narragansett Electric from National Grid USA, a subsidiary of National Grid plc (the Acquisition). Following the closing of the Acquisition, Narragansett Electric provides services doing business under the name Rhode Island Energy (RIE). Please see Note 9 in PPL's 2024 Form 10-K for additional information concerning the Acquisition. In connection with the Acquisition, National Grid USA Service Company, Inc., National Grid USA and Narragansett Electric entered into a transition services agreement (TSA), pursuant to which the National Grid entities agreed to provide certain transition services to Narragansett Electric to facilitate the transition of the operation of Narragansett Electric to PPL following the Acquisition, as agreed upon in the Narragansett share purchase agreement. The TSA was for an initial two-year term and was completed in the third quarter of 2024. TSA costs were $49 million and $97 million during the three and six months ended June 30, 2024. As a condition to the Acquisition, PPL made certain commitments to the Rhode Island Division of Public Utilities and Carriers and the Attorney General of the State of Rhode Island. See Note 9 in PPL's 2024 Form 10-K for a complete listing of those commitments. The following represents an update to the remaining commitments: •RIE will hold harmless Rhode Island customers from any changes to Accumulated Deferred Income Taxes (ADIT) as a result of the Acquisition. RIE reserves the right to seek rate adjustments based on future changes to ADIT that are not related to the Acquisition. See Note 6 for additional details on RIE's obligation to hold harmless Rhode Island customers. •RIE will forgo potential recovery of any and all transition costs, which includes (1) the installation of certain information technology systems; (2) modification and enhancements to physical facilities in Rhode Island; and (3) costs related to severance payments, communications and branding changes, and other transition related costs. These costs, which are being expensed as incurred, were $17 million and $34 million for the three and six months ended June 30, 2025 and $83 million and $165 million for the three and six months ended June 30, 2024.

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- Definition The entire disclosure for business combinations, including leverage buyout transactions (as applicable), and divestitures. This may include a description of a business combination or divestiture (or series of individually immaterial business combinations or divestitures) completed during the period, including background, timing, and assets and liabilities recognized and reclassified or sold. This element does not include fixed asset sales and plant closings. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Topic 205 -SubTopic 20 -Name Accounting Standards Codification -Publisher FASB -URI https://asc.fasb.org/205-20/tableOfContent Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 805 -Name Accounting Standards Codification -Publisher FASB -URI https://asc.fasb.org/805/tableOfContent + Details
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