Schedule V - Valuation and Qualifying Accounts Level 4 (Details) - Valuation allowance on mortgage loans [Member] - USD ($) $ in Millions	5 Months Ended	7 Months Ended	12 Months Ended
May 31, 2018	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Movement in Valuation allowance and reserves
Balance, January 1	$ 0	$ 0	$ 19	$ 19
Charged to Costs and Expenses	0	6	1	0
Write-offs/Payments/Other	0	(1)	(20)	0
Balance, December 31	$ 0	$ 5	$ 0	$ 19

A roll forward is a reconciliation of a concept from the beginning of a period to the end of a period.

No definition available.

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- Definition

Amount of valuation and qualifying accounts and reserves.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 235
-SubTopic 10
-Section S99
-Paragraph 4
-Subparagraph (SX 210.12-09)
-URI http://asc.fasb.org/extlink&oid=26873400&loc=d3e24092-122690

+ Details

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- Definition

Amount of increase in valuation and qualifying accounts and reserves from charge to cost and expense.

+ References

+ Details

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- Definition

Amount of decrease in valuation and qualifying accounts and reserves.

+ References

+ Details

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- Details

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