Income Taxes (Reconciliation Of Federal Income Tax Rate) (Details)		12 Months Ended
		Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Income Tax Disclosure [Abstract]
Federal income tax rate		35.00%	35.00%	35.00%
Reconciling items:
Non-taxable investment income		(1.30%)	(6.80%)	(1.90%)
Foreign earnings	[1]	(1.90%)	(5.20%)	(2.20%)
Non deductible compensation		(0.10%)	9.10%	3.80%
Non deductible health insurer fee		1.80%	6.90%	1.10%
Sale of subsidiary		0.00%	(8.00%)	0.00%
Other		(0.10%)	(1.40%)	0.90%
Effective income tax rate		33.40%	29.60%	36.70%
Tax benefit related to Latin American reorganization		2.20%	6.50%
One-time benefit related to conversion of branch operations				2.60%

[1] Results for all years primarily include tax benefit associated with the earnings of certain non-U.S. subsidiaries that are deemed reinvested indefinitely and the realization of foreign tax credits for certain other subsidiaries. In addition, 2016 reflects a benefit of 2.2% and 2015 reflects a 6.5% benefit related to a Latin American reorganization, while 2014 reflects a benefit of 2.6% related to the conversion of Canadian branch operations of certain U.S. companies to foreign corporate entities.