Reinsurance (Narrative) (Details) - USD ($) |
12 Months Ended | |||
|---|---|---|---|---|
Dec. 31, 2016 |
Dec. 31, 2015 |
Dec. 31, 2014 |
Dec. 31, 2010 |
|
| Reinsurance Disclosures [Abstract] | ||||
| Limit for reinsuring risk | $ 500,000 | $ 250,000 | ||
| Total life insurance in force | 20,900,000,000 | $ 22,000,000,000 | ||
| Ceded premiums | 4,700,000,000 | 5,000,000,000 | ||
| Reinsurance receivable | 2,000,000 | 3,700,000 | ||
| Reinsurance premiums | 19,675,000 | 19,129,000 | $ 19,049,000 | |
| Reinsurance recoveries | $ 12,000,000 | $ 14,200,000 | $ 6,400,000 | |