Reinsurance (Narrative) (Details) (USD $) In Millions, unless otherwise specified	Mar. 31, 2013	Dec. 31, 2012
Reinsurance Disclosures [Abstract]
Closed Block Reinsurance Percentage		83.00%
Percentage Of Reinsurance Recoverable From Major Reinsurance Companies		57.00%
Retention Limits For Reinsurance	$ 20	$ 30
Mortality Risk Percentage Reinsured		90.00%