Reinsurance (Narrative) (Details) - USD ($)	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2011
Reinsurance Disclosures [Abstract]
Limit for reinsuring risk	$ 500,000			$ 250,000
Total life insurance in force	22,000,000,000	$ 23,100,000,000
Ceded premiums	5,000,000,000	5,300,000,000
Reinsurance receivable	3,700,000	7,400,000
Reinsurance premiums	19,129,000	19,049,000	$ 18,741,000
Reinsurance recoveries	$ 14,200,000	$ 6,400,000	$ 7,000,000