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Goodwill and Specifically Identifiable Intangible Assets (Schedule Of Intangible Assets By Reportable Segment) (Details) - USD ($) $ in Millions	Dec. 31, 2020	Dec. 31, 2019
Finite And Indefinife Lived Intangible Assets Net [Abstract]
Gross carrying amount	$ 715	$ 715
Accumulated amortization	119	82
Retirement Plan Services Segment [Member] | Mutual Fund Contract Rights [Member]
Finite And Indefinife Lived Intangible Assets Net [Abstract]
Gross carrying amount	5	5
Life Insurance Segment [Member] | Sales Force [Member]
Finite And Indefinife Lived Intangible Assets Net [Abstract]
Gross carrying amount	100	100
Accumulated amortization	59	55
Group Protection Segment [Member] | Insurance Licenses [Member]
Finite And Indefinife Lived Intangible Assets Net [Abstract]
Gross carrying amount	3	3
Group Protection Segment [Member] | VOCRA [Member]
Finite And Indefinife Lived Intangible Assets Net [Abstract]
Gross carrying amount	576	576
Accumulated amortization	55	25
Group Protection Segment [Member] | VODA [Member]
Finite And Indefinife Lived Intangible Assets Net [Abstract]
Gross carrying amount	31	31
Accumulated amortization	$ 5	$ 2

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- References

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- Definition

The aggregate gross carrying amounts (including any previously recognized impairment charges) of major finite-lived intangible assets, and the carrying amounts (original costs for current and prior period additions adjusted for impairment, if any) as of the balance sheet date of intangible assets, excluding goodwill, having a projected indefinite period of benefit.

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- Definition

Accumulated amount of amortization of assets, excluding financial assets and goodwill, lacking physical substance with a finite life.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 350
-SubTopic 30
-Section 50
-Paragraph 2
-Subparagraph (a)(1)
-URI http://asc.fasb.org/extlink&oid=66006027&loc=d3e16323-109275

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