XML 48 R37.htm IDEA: XBRL DOCUMENT
v3.19.2

Variable Interest Entities (Narrative) (Details) - USD ($) | 6 Months Ended | 12 Months Ended
--- | --- | ---
Jun. 30, 2019 | Jun. 30, 2018 | Dec. 31, 2018
Variable Interest Entity [Line Items] |  |  |
Gains (losses) for consolidated variable interest entities | $ 0 |  | $ 0
Carrying amount of other investments | 2,845,000,000 |  | 2,267,000,000
Maximum [Member] |  |  |
Variable Interest Entity [Line Items] |  |  |
Income Tax Credits And Other Tax Benefits From Qualified Affordable Housing Projects | 1,000,000 | $ 1,000,000 |
Limited Partnerships and Limited Liability Companies [Member] |  |  |
Variable Interest Entity [Line Items] |  |  |
Carrying amount of other investments | 1,900,000,000 |  | 1,700,000,000
Carrying Amount Of Investments In Qualified Affordable Housing Projects | $ 16,000,000 |  | $ 20,000,000

X
- Definition The carrying amount of our investments in qualified affordable housing projects which are recognized in other investments on our Consolidated Balance Sheets. + References No definition available. + Details
Name: | lnc_CarryingAmountOfInvestmentsInQualifiedAffordableHousingProjects
Namespace Prefix: | lnc_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition The amount of net gains and losses recognized in income during the period on derivative instruments not designated and not qualifying as hedging instruments associated with consolidated variable interest entities. + References No definition available. + Details
Name: | lnc_SettlementPaymentsMarkToMarketAdjustmentsVariableInterestEntity
Namespace Prefix: | lnc_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Amount of affordable housing tax credits and other tax benefits recognized. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 323 -SubTopic 740 -Section 50 -Paragraph 2 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=116633289&loc=SL49122993-202985 + Details
Name: | us-gaap_AffordableHousingTaxCreditsAndOtherTaxBenefitsAmount
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Amount of investments classified as other. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 944 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.7-03.1(f,g)) -URI http://asc.fasb.org/extlink&oid=119400593&loc=d3e572229-122910 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.12) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 + Details
Name: | us-gaap_OtherInvestments
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition 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. + References No definition available. + Details
Name: | us-gaap_VariableInterestEntityLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Details
Name: | srt_RangeAxis=srt_MaximumMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_RelatedPartyTransactionsByRelatedPartyAxis=lnc_LimitedPartnershipsAndLimitedLiabilityCompaniesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |