Pending Disposition - Hong Kong Sale (Details) - MetLife Hong Kong [Member] $ in Millions	3 Months Ended	6 Months Ended
	Jun. 30, 2019 USD ($)	Jun. 30, 2019 USD ($)
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Discontinued Operation, Gain (Loss) on Disposal of Discontinued Operation, Net of Tax	$ (140)	$ (140)
Discontinued Operation, Gain (Loss) from Disposal of Discontinued Operation, before Income Tax	(100)	(100)
Disposal Group, Including Discontinued Operation, Goodwill	75	75
Discontinued Operation, Tax Effect of Gain (Loss) from Disposal of Discontinued Operation	(40)	(40)
Disposal Group, Including Discontinued Operation, Assets	$ 2,900	$ 2,900