Segment Information (Summary Of Net Earned Premiums By Segment And Product) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Segment Reporting, Other Significant Reconciling Item [Line Items]
Net earned premiums	$ 8,350,997	$ 8,632,142	$ 7,759,796
Solutions
Segment Reporting, Other Significant Reconciling Item [Line Items]
Net earned premiums	3,015,846	3,128,868	2,783,758
Solutions | Credit
Segment Reporting, Other Significant Reconciling Item [Line Items]
Net earned premiums	386,341	478,898	547,100
Solutions | Service contracts
Segment Reporting, Other Significant Reconciling Item [Line Items]
Net earned premiums	2,446,829	2,481,793	2,057,353
Solutions | Preneed
Segment Reporting, Other Significant Reconciling Item [Line Items]
Net earned premiums	60,403	61,093	66,523
Solutions | Other
Segment Reporting, Other Significant Reconciling Item [Line Items]
Net earned premiums	122,273	107,084	112,782
Specialty Property
Segment Reporting, Other Significant Reconciling Item [Line Items]
Net earned premiums	2,044,701	2,506,097	2,380,044
Specialty Property | Other
Segment Reporting, Other Significant Reconciling Item [Line Items]
Net earned premiums	453,245	524,556	475,814
Specialty Property | Homeowners (lender-placed and voluntary)
Segment Reporting, Other Significant Reconciling Item [Line Items]
Net earned premiums	1,425,799	1,743,965	1,678,172
Specialty Property | Manufactured housing (lender-placed and voluntary)
Segment Reporting, Other Significant Reconciling Item [Line Items]
Net earned premiums	165,657	237,576	226,058
Health
Segment Reporting, Other Significant Reconciling Item [Line Items]
Net earned premiums	2,223,696	1,945,452	1,581,407
Health | Individual
Segment Reporting, Other Significant Reconciling Item [Line Items]
Net earned premiums	1,895,970	1,544,968	1,174,141
Health | Small employer group
Segment Reporting, Other Significant Reconciling Item [Line Items]
Net earned premiums	327,726	400,484	407,266
Employee Benefits
Segment Reporting, Other Significant Reconciling Item [Line Items]
Net earned premiums	1,066,754	1,051,725	1,014,587
Employee Benefits | Group disability
Segment Reporting, Other Significant Reconciling Item [Line Items]
Net earned premiums	398,172	409,028	403,286
Employee Benefits | Group dental
Segment Reporting, Other Significant Reconciling Item [Line Items]
Net earned premiums	396,925	392,502	383,223
Employee Benefits | Group life
Segment Reporting, Other Significant Reconciling Item [Line Items]
Net earned premiums	204,526	200,285	192,392
Employee Benefits | Group supplemental and vision products
Segment Reporting, Other Significant Reconciling Item [Line Items]
Net earned premiums	$ 67,131	$ 49,910	$ 35,686