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Financial Condition and Net Income on a Statutory Basis - Significant Subs (Narrative Details) (USD $)	12 Months Ended
	Dec. 31, 2012
Statutory Basis [Abstract]
Number Of Preceeding Months To Accumulate Dividend Paid For Approval	12
Future Dividend Payment Restricted To Such Percent Of Surplus To Policy Holders	10.00%
Day As Of Max Dividends Payable For RCM And RGA Reinsurance	January 1, 2013
RCM Max Dividend Payments Without Approval	$ 169,200,000
RGA Reinsurance Max Dividend Payments Without Approval	$ 164,500,000