XML 95 R79.htm IDEA: XBRL DOCUMENT
v3.8.0.1

Investments (Schedule Of Increase (Decrease) In Payables For Collateral On Investments) (Details) - USD ($) $ in Millions | 12 Months Ended
--- | ---
Dec. 31, 2017 | Dec. 31, 2016 | Dec. 31, 2015
Increase (decrease) in payables for collateral on investments |  |  |
Collateral payable for derivative investments | $ (129) | $ (493) | $ (286)
Securities pledged under securities lending agreements | 6 | (26) | 38
Securities pledged under repurchase agreements | (5) | (138) | 66
Investments pledged for FHLBI | (450) | 995 | 430
Total increase (decrease) in payables for collateral on investments | $ (578) | $ 338 | $ 248

X
- Definition The net change during the reporting period in the amount of cash that is received related to collateral payable held for derivative instruments. + References No definition available. + Details
Name: | lnc_IncreaseDecreaseInCashCollateralForDerivativeInvestments
Namespace Prefix: | lnc_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition The net change during the reporting period in the amount of cash that is received related to securities pledged under reverse repurchase agreements + References No definition available. + Details
Name: | lnc_IncreaseDecreaseInCashCollateralForReverseRepurchaseAgreements
Namespace Prefix: | lnc_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition The net change during the reporting period in the amount of cash that is received related to securities pledged under securities lending agreements. + References No definition available. + Details
Name: | lnc_IncreaseDecreaseInCashCollateralForSecuritiesLendingAgreements
Namespace Prefix: | lnc_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition The net change during the reporting period in the amount of cash that is received related to securities pledged for Federal Home Loan Bank of Indianapolis. + References No definition available. + Details
Name: | lnc_IncreaseDecreaseInCashCollateralForSecuritiesPledgedForFhlbi
Namespace Prefix: | lnc_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition The increase (decrease) during the reporting period in the amount that is received as security when loaning securities. + References No definition available. + Details
Name: | lnc_IncreaseDecreaseInCollateralForLoanedSecurities
Namespace Prefix: | lnc_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

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