Commitments and Contingencies (Details) $ in Millions	6 Months Ended
	Jun. 30, 2019 USD ($)
Loss Contingencies [Line Items]
Total costs to remediate IRC Section 7702 issue	$ 10.0
Toll charges and fees to remediate IRC Section 7702 issue	9.1
Cost of claim and reserve liabilities to remediate IRC Section 7702 issue	$ 0.9
Other Commitments, Description	On May 17, 2017, we submitted an offer to enter into Closing Agreements with the IRS covering certain CICA and CNLIC domestic life insurance policies (the "Closing Agreements"), which was accepted by the IRS on June 7, 2019. Pursuant to the Closing Agreements, CICA and CNLIC agreed to pay the IRS $123,779 and $4,118, respectively, by August 6, 2019, and follow the corrective steps for the policies outlined in the Closing Agreements by September 5, 2019. These payments were made to the IRS on July 12, 2019.
Minimum [Member]
Loss Contingencies [Line Items]
Cost Range to Remediate IRC Section 7702 Issue	$ 6.0
Maximum [Member]
Loss Contingencies [Line Items]
Cost Range to Remediate IRC Section 7702 Issue	52.5
IRC Section 7702 remediation costs [Member] | Minimum [Member]
Loss Contingencies [Line Items]
Loss Contingency, Estimate of Possible Loss	0.6
IRC Section 7702 remediation costs [Member] | Maximum [Member]
Loss Contingencies [Line Items]
Loss Contingency, Estimate of Possible Loss	$ 0.9