Causes Of Increase Decrease In Liability For Unpaid Claims And Claims Adjustment Expense Related To Reserves

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- Definition

Expiry Of Asbestos And Environmental Claims Receivables Years

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No definition available.

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- Definition

Number of exposure groups

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- Definition

Number Of Past Years Contracts Have Been Received

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No definition available.

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- Definition

Reinsurance Receivables Percent

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- Definition

Reinsurance Receivables, Unaffiliated And Affiliated, Total

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- Definition

Reserves For Losses And LAE [Line Items]

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No definition available.

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- Definition

Retrocession Percent

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No definition available.

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- Definition

Amount of gain (loss) on sale or disposal of an equity method investment.

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No definition available.

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- Definition

The amount needed to reflect the estimated ultimate cost of settling claims relating to insured events that have occurred on or before the balance sheet date, whether or not reported to the insurer at that date.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 944
-SubTopic 40
-Section 50
-Paragraph 3
-Subparagraph (a),(b),(c)
-URI http://asc.fasb.org/extlink&oid=6482485&loc=d3e14764-158437

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- Definition

The amount of the other adjustment made to the claims reserves during the period.

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 944
-SubTopic 40
-Section 50
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-URI http://asc.fasb.org/extlink&oid=6482485&loc=d3e14764-158437

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- Definition

The cash inflow associated with the amount received from the sale of a portion of the company's business, for example a segment, division, branch or other business, during the period.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
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-Topic 230
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- Definition

Amount after valuation allowance currently billed or billable under reinsurance contracts.

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- Definition

Amount of expense (reversal of expense) for claims incurred in prior reporting periods and related claims settlement costs.

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 944
-SubTopic 235
-Section S99
-Paragraph 3
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Reserves For Losses And LAE (Narrative) (Details) $ in Thousands		12 Months Ended
	Jul. 13, 2015 USD ($)	Dec. 31, 2016 USD ($) item	Dec. 31, 2015 USD ($)	Dec. 31, 2014 USD ($)	Dec. 31, 2013 USD ($)
Reserves For Losses And LAE [Line Items]
Increase (decrease) in reinsurance business		$ (91,682)	$ (6,454)	$ 39,206
Increase (decrease) in insurance business		187,909	86,540	87,362
Reinsurance receivable, affiliated and unaffiliated, total		4,573,787	4,459,087
Gain (losses) on sale of subsidiary		(28,032)	94,704
Reinsurance receivable		$ 3,686,130	3,742,105
Retrocession percent		5.00%
Number of past years, contracts have been received		3 years
Contracts of insurance and reinsurance received claims during the past three years, in years		20 years
Number of exposure groups \| item		150
Case reserve established by the Company on direct excess insurance claims		$ 8,331,288	7,940,720	7,843,856	$ 7,653,229
Construction Liability, Umbrella, and Workers Compensation Reserves [Member]
Reserves For Losses And LAE [Line Items]
Partially offset, related to development on A&E reserves		96,227	80,086
Explosion, Port Of Tianjin, China [Member]
Reserves For Losses And LAE [Line Items]
Partially offset, related to development on A&E reserves		15,305
Explosion, Port Of Tianjin, China [Member] \| Estimated [Member]
Reserves For Losses And LAE [Line Items]
Increase (decrease) in reinsurance business			$ 21,566
Explosion, Port Of Tianjin, China [Member] \| Projected [Member]
Reserves For Losses And LAE [Line Items]
Increase (decrease) in reinsurance business		6,261
Bermuda Re [Member]
Reserves For Losses And LAE [Line Items]
Reinsurance receivable		$ 3,651,720
Reinsurance receivable percent		79.80%
Mt. Mckinley Insurance Company [Member]
Reserves For Losses And LAE [Line Items]
Purchase price	$ 20,156
Gain (losses) on sale of subsidiary	$ 94,704
U.S. Reinsurance [Member]
Reserves For Losses And LAE [Line Items]
Partially offset, related to development on A&E reserves		$ 45,668		59,509
Insurance [Member]
Reserves For Losses And LAE [Line Items]
Partially offset, related to development on A&E reserves				$ 11,352