Business, Basis of Presentation and Summary of Significant Accounting Policies Discontined Operations (Details)	Aug. 03, 2017 shares
Brighthouse Financial, Inc
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Disposal group, including discontinued operation, BHF common stock	96,776,670

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.

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