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Reserves - Narrative (Details)
12 Months Ended 36 Months Ended
Dec. 31, 2019
Dec. 31, 2018
Dec. 31, 2007
Universal Life and Annuity      
Claims and Benefits Payable      
Interest rates credited on annuities at guarantee rates 4.50%    
Universal Life and Annuity | Minimum      
Claims and Benefits Payable      
Interest rates credited on annuities at guarantee rates 3.50%    
Universal Life and Annuity | Maximum      
Claims and Benefits Payable      
Interest rates credited on annuities at guarantee rates 4.00%    
Universal Life      
Claims and Benefits Payable      
Crediting interest rates at guaranteed rates 0.00%    
Universal Life | Minimum      
Claims and Benefits Payable      
Crediting interest rates at guaranteed rates 4.00%    
Universal Life | Maximum      
Claims and Benefits Payable      
Crediting interest rates at guaranteed rates 4.10%    
Surrender charge grading period 20 years    
Global Preneed | Preneed life insurance      
Claims and Benefits Payable      
Future policy benefit increases tied to inflation 3.00% 3.00% 2.30%
Global Preneed | Preneed life insurance | Minimum      
Claims and Benefits Payable      
Interest rate assumption 4.70% 4.70%  
Percentage of adverse deviation in interest and discount rate for preneed life insurance 0.20% 0.20%  
Future policy benefit increases 0.00% 0.00%  
Global Preneed | Preneed life insurance | Maximum      
Claims and Benefits Payable      
Interest rate assumption 7.30% 7.30%  
Percentage of adverse deviation in interest and discount rate for preneed life insurance 0.50% 0.50%  
Future policy benefit increases 7.00% 7.00%  
Global Preneed | Life insurance no longer offered      
Claims and Benefits Payable      
Period of grading of interest and discount rates   20 years  
Global Preneed | Life insurance no longer offered | Minimum      
Claims and Benefits Payable      
Discount rate 5.30% 5.30%  
Period of grading of interest and discount rates 20 years    
Global Preneed | Life insurance no longer offered | Maximum      
Claims and Benefits Payable      
Discount rate 7.50% 7.50%  
Global Preneed | Block of pre-1980 traditional life insurance business      
Claims and Benefits Payable      
Discount rate 8.80% 8.80%  
Global Preneed | Preneed annuities      
Claims and Benefits Payable      
Surrender charge grading period   7 years  
Global Preneed | Preneed annuities | Minimum      
Claims and Benefits Payable      
Interest rate assumption 1.00% 1.00%  
Withdrawal charge percentage 0.00% 0.00%  
Global Preneed | Preneed annuities | Maximum      
Claims and Benefits Payable      
Surrender charge grading period 7 years    
Interest rate assumption 5.50% 5.50%  
Withdrawal charge percentage 7.00% 7.00%