Income Tax (Reconciliation of Income Tax Provision between US Statutory Rate and As Reported for Continuing Operations) (Details) - USD ($) $ in Millions	9 Months Ended
Sep. 30, 2018	Sep. 30, 2017
Other Reconciling Items	$ (36)
CHILE
Foreign tax rate differential	17
COLOMBIA
Foreign tax rate differential	5
Foreign Tax Authority
Undistributed Earnings of Foreign Subsidiaries		$ 3,000
Prior Year Income Taxes	7
Domestic Tax Authority
Prior Year Income Taxes		27
ARGENTINA
Prior Year Income Taxes		9
Impact of Separation
Other Adjustments		554
Foreign dividends \| Foreign Tax Authority
Foreign tax rate differential		$ 180
Brighthouse Financial, Inc
Other Reconciling Items	$ 69

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