Business, Basis of Presentation and Summary of Significant Accounting Policies	3 Months Ended
	Mar. 31, 2025
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Business, Basis of Presentation and Summary of Significant Accounting Policies	1. Business, Basis of Presentation and Summary of Significant Accounting Policies Business “BLIC” and the “Company” refer to Brighthouse Life Insurance Company, a Delaware corporation originally incorporated in Connecticut in 1863, and its subsidiaries. Brighthouse Life Insurance Company is a wholly-owned subsidiary of Brighthouse Holdings, LLC (“BH Holdings”) and an indirect wholly-owned subsidiary of Brighthouse Financial, Inc. (“BHF” and, together with its subsidiaries, “Brighthouse Financial”). BLIC offers a range of annuity and life insurance products to individuals. The Company is organized into the following reportable segments: Annuities; Life; Run-off; and Corporate & Other. Basis of Presentation The preparation of financial statements in conformity with accounting principles generally accepted in the United States of America (“GAAP”) requires management to adopt accounting policies and make estimates and assumptions that affect amounts reported on the interim condensed consolidated financial statements. In applying these policies and estimates, management makes subjective and complex judgments that frequently require assumptions about matters that are inherently uncertain. Many of these policies, estimates and related judgments are common in the insurance and financial services industries; others are specific to the Company’s business and operations. Actual results could differ from these estimates. Consolidation The accompanying interim condensed consolidated financial statements include the accounts of Brighthouse Life Insurance Company and its subsidiaries, as well as partnerships and limited liability companies (“LLC”) that the Company controls. Intercompany accounts and transactions have been eliminated. The Company uses the equity method of accounting for investments in limited partnerships and LLCs when it has more than a minor ownership interest or more than a minor influence over the investee’s operations. The Company generally recognizes its share of the investee’s earnings on a three-month lag in instances where the investee’s financial information is not sufficiently timely or when the investee’s reporting period differs from the Company’s reporting period. When the Company has virtually no influence over the investee’s operations, the investment is carried at fair value. Since the Company is a member of a controlled group of affiliated companies, its results may not be indicative of those of a standalone entity. The accompanying interim condensed consolidated financial statements are unaudited and reflect all adjustments (including normal recurring adjustments) necessary to present fairly the financial position, results of operations and cash flows for the interim periods presented in conformity with GAAP. Interim results are not necessarily indicative of full year performance. The December 31, 2024 consolidated balance sheet data was derived from audited consolidated financial statements included in Brighthouse Life Insurance Company’s Annual Report on Form 10-K for the year ended December 31, 2024 (the “2024 Annual Report”), which include all disclosures required by GAAP. Therefore, these interim condensed consolidated financial statements should be read in conjunction with the consolidated financial statements of the Company included in the 2024 Annual Report. Summary of Significant Accounting Policies In connection with the establishment of a trading portfolio comprised of fixed income securities, the Company updated its impacted accounting policies as described below. See Note 1 of the Notes to the Consolidated Financial Statements included in the 2024 Annual Report for a description of the Company’s accounting policies that did not change. Investments Trading Securities The Company’s trading securities consist primarily of fixed maturity securities and are reported at their estimated fair value. Realized and unrealized investment gains (losses) on trading securities are recorded in net investment income on the interim condensed consolidated statements of operations. Adoption of New Accounting Pronouncements Changes to GAAP are established by the Financial Accounting Standards Board (“FASB”) in the form of accounting standards updates (“ASU”) to the FASB Accounting Standards Codification. The Company considers the applicability and impact of all ASUs. There were no significant ASUs adopted during the period ended March 31, 2025. Future Adoption of New Accounting Pronouncements In November 2024, the FASB issued new guidance on income statement expense disclosures (ASU 2024-03, Income Statement—Reporting Comprehensive Income—Expense Disaggregation Disclosures (Subtopic 220-40): Disaggregation of Income Statement Expenses). This ASU requires public companies to disclose additional disaggregated information about expenses in the notes to financial statements at each interim and annual reporting period. This ASU is effective for fiscal years starting January 1, 2027, and for interim periods starting January 1, 2028. This ASU is required to be adopted prospectively with the option of retrospective application. The Company is currently evaluating the impact of this guidance on its financial statements. In December 2023, the FASB issued new guidance on Income Tax Disclosures (ASU 2023-09, Income Taxes (Topic 740): Improvements to Income Tax Disclosures). This ASU updates the required income tax disclosures to include disclosure of income taxes paid disaggregated by jurisdiction and greater disaggregation of information in the required rate reconciliation. This ASU is effective for annual periods starting with fiscal year 2025, and is to be applied on a prospective basis with the option of retrospective application. The Company is currently evaluating the impact of this guidance on its financial statements.