XML 84 R72.htm IDEA: XBRL DOCUMENT
v3.10.0.1

Guaranteed Benefit Features (Account Balances Of Variable Annuity Contracts With Guarantees Invested In Separate Accounts) (Details) - Variable Annuity [Member] - USD ($) $ in Millions | Jun. 30, 2018 | Dec. 31, 2017
--- | --- | ---
Account Balances Of Variable Annuity Contracts With Guarantees Invested In Separate Accounts [Line Items] |  |
Total | $ 120,354 | $ 121,110
Percent of total variable annuity separate account values | 99.00% | 99.00%
Domestic Equity [Member] |  |
Account Balances Of Variable Annuity Contracts With Guarantees Invested In Separate Accounts [Line Items] |  |
Total | $ 59,698 | $ 59,647
International Equity [Member] |  |
Account Balances Of Variable Annuity Contracts With Guarantees Invested In Separate Accounts [Line Items] |  |
Total | 20,558 | 20,837
Fixed Income [Member] |  |
Account Balances Of Variable Annuity Contracts With Guarantees Invested In Separate Accounts [Line Items] |  |
Total | $ 40,098 | $ 40,626

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

X
- Definition Separate account values of variable annuity contracts with guarantees as a percentage of total variable annuity separate account values + References No definition available. + Details
Name: | lnc_PercentOfTotalVariableAnnuitySeparateAccountValues
Namespace Prefix: | lnc_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | instant

X
- Definition Value of the separate accounts corresponding to the specified product, guarantee type and subset of the guarantee. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 944 -SubTopic 80 -Section 50 -Paragraph 1 -Subparagraph ((d)(1)) -URI http://asc.fasb.org/extlink&oid=6484115&loc=d3e19393-158473 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 944 -SubTopic 20 -Section 55 -Paragraph 15 -URI http://asc.fasb.org/extlink&oid=6588021&loc=d3e7104-158389 + Details
Name: | us-gaap_NetAmountAtRiskByProductAndGuaranteeSeparateAccountValue
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Details
Name: | us-gaap_ProductOrServiceAxis=us-gaap_VariableAnnuityMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_InvestmentTypeAxis=lnc_DomesticEquityMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_InvestmentTypeAxis=lnc_InternationalEquityMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_InvestmentTypeAxis=us-gaap_FixedIncomeSecuritiesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |