XML 58 R87.htm IDEA: XBRL DOCUMENT
v3.20.1

Fair Value of Financial Instruments (Changes In Unrealized Gains (Losses) Within Level 3 Financial Instruments Carried At Fair Value And Still Held) (Details) - USD ($) $ in Millions | 3 Months Ended
--- | ---
Mar. 31, 2020 | Mar. 31, 2019
Changes in unrealized gains (losses) within Level 3 financial instruments carried at fair value and still held |  |
Change in unrealized gains (losses) included in net income | $ (4,033) | $ 162
GLB Embedded Derivatives [Member] | Realized Gain (Loss) [Member] |  |
Changes in unrealized gains (losses) within Level 3 financial instruments carried at fair value and still held |  |
Change in unrealized gains (losses) included in net income | (4,867) | 481
Derivative Investments [Member] | Realized Gain (Loss) [Member] |  |
Changes in unrealized gains (losses) within Level 3 financial instruments carried at fair value and still held |  |
Change in unrealized gains (losses) included in net income | 895 | (287)
Indexed Annuity And IUL Contracts [Member] | Realized Gain (Loss) [Member] |  |
Changes in unrealized gains (losses) within Level 3 financial instruments carried at fair value and still held |  |
Change in unrealized gains (losses) included in net income | $ (61) | $ (32)

X
- References No definition available. + Details
Name: | lnc_ChangesInUnrealizedGainsLossesWithinLevel3FinancialInstrumentsCarriedAtFairValueAndStillHeldAbstract
Namespace Prefix: | lnc_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Amount of unrealized gain (loss) recognized in income from liability measured at fair value on recurring basis using unobservable input (level 3) and still held. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 820 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (d) -URI http://asc.fasb.org/extlink&oid=117815213&loc=d3e19207-110258 + Details
Name: | us-gaap_FairValueLiabilitiesMeasuredOnRecurringBasisChangeInUnrealizedGainLoss
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Details
Name: | us-gaap_FinancialInstrumentAxis=lnc_GuaranteedLivingBenefitsEmbeddedDerivativeReservesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_IncomeStatementLocationAxis=lnc_RealizedGainLossMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FinancialInstrumentAxis=us-gaap_DerivativeFinancialInstrumentsAssetsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FinancialInstrumentAxis=lnc_IndexedAnnuityContractsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |