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Insurance in Force (Schedule Of Geographical Distribution Of Insurance In Force) (Detail) - USD ($)
$ in Billions
Dec. 31, 2024
Dec. 31, 2023
Insurance in Force $ 54.3 $ 60.9
% of Insurance in Force 100.00% 100.00%
California [Member]    
Insurance in Force $ 12.1 $ 13.4
% of Insurance in Force 22.30% 22.00%
Illinois [Member]    
Insurance in Force $ 6.0 $ 6.6
% of Insurance in Force 11.00% 10.80%
New Jersey [Member]    
Insurance in Force $ 3.8 $ 3.8
% of Insurance in Force 7.00% 6.20%
Hawaii [Member]    
Insurance in Force $ 3.5 $ 3.6
% of Insurance in Force 6.50% 6.00%
Virginia [Member]    
Insurance in Force $ 3.2 $ 3.4
% of Insurance in Force 6.00% 5.60%
Texas [Member]    
Insurance in Force $ 2.0 $ 2.7
% of Insurance in Force 3.70% 4.40%
Colorado [Member]    
Insurance in Force $ 1.6 $ 1.7
% of Insurance in Force 2.90% 2.80%
Oregon [Member]    
Insurance in Force $ 1.4 $ 1.7
% of Insurance in Force 2.50% 2.80%
Georgia [Member]    
Insurance in Force $ 1.2 $ 1.5
% of Insurance in Force 2.20% 2.40%
New York [Member]    
Insurance in Force $ 1.1 $ 1.5
% of Insurance in Force 2.10% 2.50%
Sub-Total Insurance In Force [Member]    
Insurance in Force $ 35.9 $ 39.9
% of Insurance in Force 66.20% 65.50%
Nationally Diversified [Member]    
Insurance in Force $ 6.3 $ 6.7
% of Insurance in Force 11.50% 11.10%
Other States [Member]    
Insurance in Force $ 10.1 $ 11.8
% of Insurance in Force 18.50% 19.40%
United States [Member]    
Insurance in Force $ 52.3 $ 58.4
% of Insurance in Force 96.20% 96.00%
Internationally Diversified [Member]    
Insurance in Force $ 0.2 $ 0.2
% of Insurance in Force 0.40% 0.30%
Country Specific [Member]    
Insurance in Force $ 1.8 $ 2.3
% of Insurance in Force 3.40% 3.70%
Non-United States [Member]    
Insurance in Force $ 2.0 $ 2.5
% of Insurance in Force 3.80% 4.00%