Equity (Statutory Equity and Income - Narrative) (Details) - Minimum	12 Months Ended
Dec. 31, 2023
Parent Company
Statutory Accounting Practices [Line Items]
Description of Regulatory Capital Requirements under Insurance Regulations	400
Brighthouse Life Insurance Co of NY
Statutory Accounting Practices [Line Items]
Description of Regulatory Capital Requirements under Insurance Regulations	400

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 944
-SubTopic 210
-Name Accounting Standards Codification
-Section S99
-Paragraph 1
-Subparagraph (SX 210.7-03(a)(23)(c))
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147479440/944-210-S99-1

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