XML 78 R67.htm IDEA: XBRL DOCUMENT
v3.19.2

Guaranteed Benefit Features (Narrative) (Details) | 3 Months Ended | 6 Months Ended |
--- | --- | --- | ---
Jun. 30, 2019 | Jun. 30, 2018 | Jun. 30, 2019 | Jun. 30, 2018 | Dec. 31, 2018
Guaranteed Benefit Features [Abstract] |  |  |  |  |
Percent of permanent life insurance in force | 37.00% |  | 37.00% |  | 35.00%
Percent of permanent life insurance sales | 29.00% | 30.00% | 29.00% | 33.00% |

X
- Definition Guaranteed Benefit Features [Abstract] + References No definition available. + Details
Name: | lnc_GuaranteedBenefitFeaturesAbstract
Namespace Prefix: | lnc_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Universal life and variable universal life products with secondary guarantees in force as a percentage of total permanent life insurance in force. + References No definition available. + Details
Name: | lnc_PercentOfPermanentLifeInsuranceInForce
Namespace Prefix: | lnc_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | instant

X
- Definition Sales of universal life and variable universal life products with secondary guarantees as a percentage of total sales of permanent life insurance. + References No definition available. + Details
Name: | lnc_PercentOfPermanentLifeInsuranceSales
Namespace Prefix: | lnc_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | duration