Basis of Presentation (Policies)	3 Months Ended
Basis of Presentation (Policies)	Mar. 31, 2024
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Basis of Presentation	Basis of Presentation The accompanying unaudited Condensed Consolidated Financial Statements include the accounts of ProAssurance Corporation, its wholly owned subsidiaries and VIEs in which ProAssurance is the primary beneficiary (ProAssurance, PRA or the Company). See Note 10 for more information on ProAssurance's VIE interests. The financial statements have been prepared in accordance with GAAP for interim financial information and with the instructions to Form 10-Q and Article 10 of Regulation S-X. Accordingly, they do not include all of the information and notes required by GAAP for complete financial statements. In the opinion of management, all adjustments considered necessary for a fair presentation, consisting of normal recurring adjustments, have been included. ProAssurance’s results for the three months ended March 31, 2024 are not necessarily indicative of the results that may be expected for the year ending December 31, 2024. The accompanying Condensed Consolidated Financial Statements should be read in conjunction with the Consolidated Financial Statements and Notes contained in ProAssurance’s December 31, 2023 report on Form 10-K. Beginning in the third quarter of 2023, ProAssurance operates in four reportable segments as follows: Specialty P&C, Workers' Compensation Insurance, Segregated Portfolio Cell Reinsurance and Corporate. For more information on the Company's segment reporting, including the nature of products and services provided and financial information by segment, refer to Note 12.
Accounting Policies	Accounting Policies The preparation of financial statements in conformity with GAAP requires the Company to make estimates and assumptions that affect the reported amounts of assets and liabilities, revenues and expenses, and disclosures related to these amounts at the date of the financial statements. The Company evaluates these estimates and assumptions on an ongoing basis based on current and historical developments, market conditions, industry trends and other information that the Company believes to be reasonable under the circumstances. The Company can make no assurance that actual results will conform to its estimates and assumptions; reported results of operations may be materially affected by changes in these estimates and assumptions. The significant accounting policies followed by ProAssurance in making estimates that materially affect financial reporting are summarized in Note 1 of the Notes to Consolidated Financial Statements in ProAssurance’s December 31, 2023 report on Form 10-K.
Accounting Changes Adopted and Accounting Changes Not Yet Adopted	Accounting Changes Adopted The Company did not adopt any new accounting standards during the three months ended March 31, 2024. Accounting Changes Not Yet Adopted Disclosure Improvements (ASU 2023-06) In October 2023, the FASB amended guidance to clarify or improve disclosure and presentation requirements of a variety of topics, which will allow users to more easily compare entities subject to the SEC's existing disclosures with those entities that were not previously subject to the requirements and align the requirements in the Codification with the SEC's regulations. The effective date for each amendment will be the date on which the SEC’s removal of that related disclosure from Regulation S-X becomes effective, with early adoption prohibited. ProAssurance is currently evaluating the effect the updated guidance will have on the Company's financial statement disclosures. Improvements to Reportable Segment Disclosures (ASU 2023-07) Effective for fiscal years beginning after December 15, 2023 and interim periods within fiscal years beginning after December 15, 2024, and requiring retrospective application to all prior periods presented in the financial statements, the FASB amended disclosure requirements for segment reporting by modifying and adding disclosure requirements, primarily related to significant segment expenses which are regularly provided to the Company’s CODM. ProAssurance is currently evaluating the effect the updated guidance will have on the Company's financial statement disclosures. Improvements to Income Tax Disclosures (ASU 2023-09) Effective for fiscal years beginning after December 31, 2024, the FASB amended disclosure requirements to provide greater transparency on income tax disclosures, including the disaggregation of existing disclosures related to the tax rate reconciliation and income taxes paid. ProAssurance is currently evaluating the effect the updated guidance will have on the Company's financial statement disclosures.