Amount of earned premiums assumed from other entities.

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Amount of earned premiums ceded to other entities.

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Amount, before premiums ceded to other entities and premiums assumed by the entity, of premiums earned.

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Reference 1: http://www.xbrl.org/2003/role/presentationRef

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-Number 210

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Reference 2: http://www.xbrl.org/2003/role/presentationRef

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Amount of life insurance issued and outstanding assumed from other entities. Includes, but not limited to, dividends and adjustments to face value.

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Amount before contracts ceded to other entities and contracts assumed by the entity of life insurance issued and outstanding. Includes, but not limited to, dividends and adjustments to face value.

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Percentage of assumed life insurance issued and outstanding contracts to life insurance issued and outstanding after contracts ceded to other entities and contracts assumed by the entity. Includes, but not limited to, dividends and adjustments to face value.

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SCHEDULE IV - Reinsurance (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended								12 Months Ended
	Dec. 31, 2014	Sep. 30, 2014	Jun. 30, 2014	Mar. 31, 2014	Dec. 31, 2013	Sep. 30, 2013	Jun. 30, 2013	Mar. 31, 2013	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Reinsurance Premiums For Insurance Companies By Product Segment Net Amount [Abstract]
Gross amount									$ 209,479us-gaap_DirectPremiumsEarned	$ 93,091us-gaap_DirectPremiumsEarned	$ 84,815us-gaap_DirectPremiumsEarned
Ceded to other companies									215,203us-gaap_CededPremiumsEarned	175,656us-gaap_CededPremiumsEarned	155,010us-gaap_CededPremiumsEarned
Assumed from other companies									5,614,919us-gaap_AssumedPremiumsEarned	5,280,775us-gaap_AssumedPremiumsEarned	4,556,134us-gaap_AssumedPremiumsEarned
Net amount	1,446,000us-gaap_PremiumsEarnedNet	1,557,000us-gaap_PremiumsEarnedNet	1,353,000us-gaap_PremiumsEarnedNet	1,254,000us-gaap_PremiumsEarnedNet	1,421,000us-gaap_PremiumsEarnedNet	1,421,000us-gaap_PremiumsEarnedNet	1,209,000us-gaap_PremiumsEarnedNet	1,147,000us-gaap_PremiumsEarnedNet	5,609,195us-gaap_PremiumsEarnedNet	5,198,210us-gaap_PremiumsEarnedNet	4,485,939us-gaap_PremiumsEarnedNet
Percentage of amount assumed to net									100.00%us-gaap_PremiumsPercentageAssumedToNet	102.00%us-gaap_PremiumsPercentageAssumedToNet	102.00%us-gaap_PremiumsPercentageAssumedToNet
Life reinsurance in force
Gross amount	0us-gaap_LifeInsuranceInForceGross				0us-gaap_LifeInsuranceInForceGross				0us-gaap_LifeInsuranceInForceGross	0us-gaap_LifeInsuranceInForceGross	0us-gaap_LifeInsuranceInForceGross
Ceded to other companies	2,322,845us-gaap_LifeInsuranceInForceCeded				1,629,920us-gaap_LifeInsuranceInForceCeded				2,322,845us-gaap_LifeInsuranceInForceCeded	1,629,920us-gaap_LifeInsuranceInForceCeded	1,782,549us-gaap_LifeInsuranceInForceCeded
Assumed from other companies	198,284,805us-gaap_LifeInsuranceInForceAssumed				211,247,212us-gaap_LifeInsuranceInForceAssumed				198,284,805us-gaap_LifeInsuranceInForceAssumed	211,247,212us-gaap_LifeInsuranceInForceAssumed	214,006,823us-gaap_LifeInsuranceInForceAssumed
Net amount	195,961,960us-gaap_LifeInsuranceInForceNet				209,617,292us-gaap_LifeInsuranceInForceNet				195,961,960us-gaap_LifeInsuranceInForceNet	209,617,292us-gaap_LifeInsuranceInForceNet	212,224,274us-gaap_LifeInsuranceInForceNet
Percentage of amount assumed to net	101.00%				101.00%				101.00%	101.00%	101.00%
Life [Member]
Reinsurance Premiums For Insurance Companies By Product Segment Net Amount [Abstract]
Gross amount									0	0	0
Ceded to other companies									5,031	5,000	5,400
Assumed from other companies									943,054	821,737	780,279
Net amount									938,023	816,737	774,879
Percentage of amount assumed to net									101.00%	101.00%	101.00%
Accident and health [Member]
Reinsurance Premiums For Insurance Companies By Product Segment Net Amount [Abstract]
Gross amount									66,090	0	0
Ceded to other companies									40,065	2,912	0
Assumed from other companies									257,703	143,321	19,719
Net amount									283,728	140,409	19,719
Percentage of amount assumed to net									91.00%	102.00%	100.00%
Property and casualty [Member]
Reinsurance Premiums For Insurance Companies By Product Segment Net Amount [Abstract]
Gross amount									143,389	93,091	84,815
Ceded to other companies									170,107	167,744	149,610
Assumed from other companies									4,414,162	4,315,717	3,756,136
Net amount									$ 4,387,444	$ 4,241,064	$ 3,691,341
Percentage of amount assumed to net									101.00%	102.00%	102.00%