Retirement And Other Employee Benefits (Allocation Of Plan Assets, Based On The Fair Value Of Assets Held And Target Allocation) (Details)	12 Months Ended
	Dec. 31, 2015
Equity securities
Defined Benefit Plan Disclosure [Line Items]
Percentage Allocation of Plan Assets, Target	30.00%
Common stock- U.S. listed small cap
Defined Benefit Plan Disclosure [Line Items]
Percentage Allocation of Plan Assets, Low	5.00%	[1]
Percentage Allocation of Plan Assets, Target	7.50%	[1],[2]
Percentage Allocation of Plan Assets, High	10.00%	[1]
Mutual funds- U.S. listed large cap
Defined Benefit Plan Disclosure [Line Items]
Percentage Allocation of Plan Assets, Low	10.00%	[1]
Percentage Allocation of Plan Assets, Target	15.00%	[1],[2]
Percentage Allocation of Plan Assets, High	20.00%	[1]
Common/collective trust- foreign listed
Defined Benefit Plan Disclosure [Line Items]
Percentage Allocation of Plan Assets, Low	5.00%	[1]
Percentage Allocation of Plan Assets, Target	7.50%	[1],[2]
Percentage Allocation of Plan Assets, High	10.00%	[1]
Fixed maturity securities
Defined Benefit Plan Disclosure [Line Items]
Percentage Allocation of Plan Assets, Target	50.00%
U.S. & foreign government and government agencies and authorities
Defined Benefit Plan Disclosure [Line Items]
Percentage Allocation of Plan Assets, Low	6.50%
Percentage Allocation of Plan Assets, Target	9.00%	[2]
Percentage Allocation of Plan Assets, High	11.50%
Corporate- U.S. & foreign investment grade
Defined Benefit Plan Disclosure [Line Items]
Percentage Allocation of Plan Assets, Low	31.00%
Percentage Allocation of Plan Assets, Target	33.50%	[2]
Percentage Allocation of Plan Assets, High	36.00%
Corporate- U.S. & foreign high yield
Defined Benefit Plan Disclosure [Line Items]
Percentage Allocation of Plan Assets, Low	5.00%
Percentage Allocation of Plan Assets, Target	7.50%	[2]
Percentage Allocation of Plan Assets, High	10.00%
Alternative investment fund:
Defined Benefit Plan Disclosure [Line Items]
Percentage Allocation of Plan Assets, Target	20.00%
Multi-strategy hedge fund
Defined Benefit Plan Disclosure [Line Items]
Percentage Allocation of Plan Assets, Low	5.50%
Percentage Allocation of Plan Assets, Target	8.00%	[2]
Percentage Allocation of Plan Assets, High	10.50%
Commingled real estate fund
Defined Benefit Plan Disclosure [Line Items]
Percentage Allocation of Plan Assets, Low	3.50%
Percentage Allocation of Plan Assets, Target	6.00%	[2]
Percentage Allocation of Plan Assets, High	8.50%
Private equity fund
Defined Benefit Plan Disclosure [Line Items]
Percentage Allocation of Plan Assets, Low	0.00%
Percentage Allocation of Plan Assets, Target	6.00%	[2]
Percentage Allocation of Plan Assets, High	8.50%

[1] The Plans’ long-term asset allocation targets are 30% equity, 50% fixed income and 20% investment funds. The Company invests certain plan assets in investment funds, examples of which include real estate investment funds and private equity funds. Amounts allocated for these investments are included in the alternative investment funds caption of the asset allocation at December 31, 2015, provided in the section above.

[2] It is understood that these guidelines are targets and that deviations may occur periodically as a result of cash flows, market impact or short-term decisions implemented by either the Investment Committee or their investment managers.