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.

No definition available.

+ Details

Name:	us-gaap_FinancingReceivableModificationsLineItems
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

- Definition

Number of financing receivables that have been modified by troubled debt restructurings.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
-SubTopic 10
-Section 50
-Paragraph 33
-URI http://asc.fasb.org/extlink&oid=121611835&loc=SL6953676-111524

+ Details

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Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	duration

- Definition

Amount, after troubled debt restructuring, of modified financing receivable.

+ References

+ Details

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Definition

Amount, before troubled debt restructuring, of financing receivable to be modified.

+ References

+ Details

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Details

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- Details

Name:	us-gaap_FinancingReceivablePortfolioSegmentAxis=us-gaap_CommercialRealEstatePortfolioSegmentMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

Investments (excluding Consolidated Investment Entities) - Troubled Debt Restructuring (Details) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2020 loan	Jun. 30, 2019 loan	Jun. 30, 2020 loan	Jun. 30, 2019 USD ($) loan
Private placement debt
Financing Receivable, Troubled Debt Restructuring [Line Items]
Troubled debt restructuring, number of contracts \| loan	0	0		1
Pre-modification carrying value \| $				$ 107
Post-modification carrying value \| $				$ 80
Commercial mortgage loans
Financing Receivable, Troubled Debt Restructuring [Line Items]
Troubled debt restructuring, number of contracts \| loan			0	0