$RNR
RENAISSANCERE HOLDINGS LTD Stock $rnr

$rnr Overview Financials Valuation SEC Filings Company Website

2012 Q3 Form 10-Q Financial Statement

#000144530512003375 Filed on November 02, 2012

Income Statement

Concept	2012 Q3	2011 Q3
Revenue	$390.5M	$217.9M
YoY Change	79.17%	-42.95%
Cost Of Revenue	$73.22M	$77.83M
YoY Change	-5.93%
Gross Profit	$317.3M	$140.1M
YoY Change	126.44%
Gross Profit Margin	81.25%	64.29%
Selling, General & Admin	$46.20M	$45.80M
YoY Change	0.87%	7.51%
% of Gross Profit	14.56%	32.69%
Research & Development
YoY Change
% of Gross Profit
Depreciation & Amortization	$24.44M	$26.06M
YoY Change	-6.21%	-0.33%
% of Gross Profit	7.7%	18.6%
Operating Expenses	$143.8M	$149.6M
YoY Change	-3.88%	2.05%
Operating Profit	$173.5M	-$9.483M
YoY Change	-1929.43%
Interest Expense	$5.891M	$5.722M
YoY Change	2.95%	-7.17%
% of Operating Profit	3.4%
Other Income/Expense, Net
YoY Change
Pretax Income	$240.8M	$62.59M
YoY Change	284.75%	-72.7%
Income Tax	$144.0K	-$1.435M
% Of Pretax Income	0.06%	-2.29%
Net Earnings	$189.4M	$58.01M
YoY Change	226.5%	-73.06%
Net Earnings / Revenue	48.5%	26.62%
Basic Earnings Per Share	$3.67	$0.96
Diluted Earnings Per Share	$3.62	$0.95
COMMON SHARES
Basic Shares Outstanding	48.39M shares	50.50M shares
Diluted Shares Outstanding	49.12M shares	50.97M shares

Balance Sheet

Concept	2012 Q3	2011 Q3
SHORT-TERM ASSETS
Cash & Short-Term Investments
YoY Change
Cash & Equivalents	$226.1M	$235.1M
Short-Term Investments
Other Short-Term Assets
YoY Change
Inventory
Prepaid Expenses
Receivables
Other Receivables
Total Short-Term Assets	$344.0M	$34.00M
YoY Change	911.76%	-78.48%
LONG-TERM ASSETS
Property, Plant & Equipment
YoY Change
Goodwill
YoY Change
Intangibles
YoY Change
Long-Term Investments	$82.21M	$6.256B
YoY Change	-98.69%	-1.03%
Other Assets		$2.000M
YoY Change		-99.8%
Total Long-Term Assets	$8.450B	$8.083B
YoY Change	4.53%	-6.2%
TOTAL ASSETS
Total Short-Term Assets	$344.0M	$34.00M
Total Long-Term Assets	$8.450B	$8.083B
Total Assets	$8.794B	$8.117B
YoY Change	8.33%	-7.5%
SHORT-TERM LIABILITIES
YoY Change
Accounts Payable
YoY Change
Accrued Expenses
YoY Change
Deferred Revenue
YoY Change
Short-Term Debt	$0.00	$0.00
YoY Change
Long-Term Debt Due
YoY Change
Total Short-Term Liabilities	$576.0M	$233.0M
YoY Change	147.21%	-23.61%
LONG-TERM LIABILITIES
Long-Term Debt	$359.0M	$349.0M
YoY Change	2.87%	-36.43%
Other Long-Term Liabilities	$208.0M	$184.0M
YoY Change	13.04%	-80.34%
Total Long-Term Liabilities	$567.0M	$533.0M
YoY Change	6.38%	-64.11%
TOTAL LIABILITIES
Total Short-Term Liabilities	$576.0M	$233.0M
Total Long-Term Liabilities	$567.0M	$533.0M
Total Liabilities	$4.000B	$4.570B
YoY Change	-12.48%	-4.81%
SHAREHOLDERS EQUITY
Retained Earnings	$3.227B
YoY Change
Common Stock	$48.23M
YoY Change
Preferred Stock
YoY Change
Treasury Stock (at cost)
YoY Change
Treasury Stock Shares
Shareholders Equity	$3.839B	$3.548B
YoY Change
Total Liabilities & Shareholders Equity	$8.794B	$8.117B
YoY Change	8.33%	-7.5%

Cashflow Statement

Concept	2012 Q3	2011 Q3
OPERATING ACTIVITIES
Net Income	$189.4M	$58.01M
YoY Change	226.5%	-73.06%
Depreciation, Depletion And Amortization	$24.44M	$26.06M
YoY Change	-6.21%	-0.33%
Cash From Operating Activities	$244.0M	$163.5M
YoY Change	49.24%	-21.36%
INVESTING ACTIVITIES
Capital Expenditures
YoY Change
Acquisitions
YoY Change
Other Investing Activities	-$62.80M	-$139.3M
YoY Change	-54.92%	14.74%
Cash From Investing Activities	-$62.80M	-$139.3M
YoY Change	-54.92%	14.74%
FINANCING ACTIVITIES
Cash Dividend Paid
YoY Change
Common Stock Issuance & Retirement, Net
YoY Change
Debt Paid & Issued, Net
YoY Change
Cash From Financing Activities	-187.1M	-24.80M
YoY Change	654.44%	2.06%
NET CHANGE
Cash From Operating Activities	244.0M	163.5M
Cash From Investing Activities	-62.80M	-139.3M
Cash From Financing Activities	-187.1M	-24.80M
Net Change In Cash	-5.900M	-600.0K
YoY Change	883.33%	-100.96%
FREE CASH FLOW
Cash From Operating Activities	$244.0M	$163.5M
Capital Expenditures
Free Cash Flow
YoY Change

Facts In Submission

Frame	Concept Type	Concept / XBRL Key	Value	Unit
CY2012Q3	us-gaap	Accrued Investment Income Receivable AccruedInvestmentIncomeReceivable	37327000	USD
CY2011Q4	us-gaap	Accrued Investment Income Receivable AccruedInvestmentIncomeReceivable	33523000	USD
CY2012Q3	us-gaap	Accumulated Other Comprehensive Income Loss Net Of Tax AccumulatedOtherComprehensiveIncomeLossNetOfTax	14067000	USD
CY2011Q4	us-gaap	Accumulated Other Comprehensive Income Loss Net Of Tax AccumulatedOtherComprehensiveIncomeLossNetOfTax	11760000	USD
CY2012Q3	us-gaap	Alternative Investments Fair Value Disclosure AlternativeInvestmentsFairValueDisclosure	645681000	USD
CY2011Q4	us-gaap	Assets Assets	7744912000	USD
CY2012Q3	us-gaap	Assets Assets	8793508000	USD
	us-gaap	Income Loss From Continuing Operations Per Basic Share IncomeLossFromContinuingOperationsPerBasicShare	-3.19
	us-gaap	Income Loss From Continuing Operations Per Diluted Share IncomeLossFromContinuingOperationsPerDilutedShare	10.22
	us-gaap	Income Loss From Continuing Operations Per Diluted Share IncomeLossFromContinuingOperationsPerDilutedShare	-3.19
	us-gaap	Investment Income Investment Expense InvestmentIncomeInvestmentExpense	8629000	USD
	us-gaap	Fair Value Assets Measured On Recurring Basis Change In Unrealized Gain Loss Included In Other Income FairValueAssetsMeasuredOnRecurringBasisChangeInUnrealizedGainLossIncludedInOtherIncome	1173000	USD
CY2012Q3	us-gaap	Assets Held By Insurance Regulators AssetsHeldByInsuranceRegulators	515100000	USD
	us-gaap	Fair Value Assets Measured On Recurring Basis Change In Unrealized Gain Loss Included In Other Income FairValueAssetsMeasuredOnRecurringBasisChangeInUnrealizedGainLossIncludedInOtherIncome	6567000	USD
	us-gaap	Payments To Acquire Available For Sale Securities PaymentsToAcquireAvailableForSaleSecurities	0	USD
	us-gaap	Payments To Acquire Available For Sale Securities PaymentsToAcquireAvailableForSaleSecurities	4092000	USD
CY2012Q3	us-gaap	Assets Held In Trust AssetsHeldInTrust	1270700000	USD
	us-gaap	Assumed Premiums Written AssumedPremiumsWritten	1440454000	USD
	us-gaap	Assumed Premiums Written AssumedPremiumsWritten	1370022000	USD
CY2012Q3	us-gaap	Assumed Premiums Written AssumedPremiumsWritten	129166000	USD
CY2011Q3	us-gaap	Assumed Premiums Written AssumedPremiumsWritten	133515000	USD
CY2011Q4	us-gaap	Available For Sale Debt Securities Amortized Cost Basis AvailableForSaleDebtSecuritiesAmortizedCostBasis	130699000	USD
CY2012Q3	us-gaap	Available For Sale Debt Securities Amortized Cost Basis AvailableForSaleDebtSecuritiesAmortizedCostBasis	82045000	USD
CY2012Q3	us-gaap	Available For Sale Securities Debt Maturities After Five Through Ten Years Amortized Cost AvailableForSaleSecuritiesDebtMaturitiesAfterFiveThroughTenYearsAmortizedCost	5051000	USD
CY2012Q3	us-gaap	Available For Sale Securities Debt Maturities After Five Through Ten Years Fair Value AvailableForSaleSecuritiesDebtMaturitiesAfterFiveThroughTenYearsFairValue	5620000	USD
CY2012Q3	us-gaap	Available For Sale Securities Debt Maturities After One Through Five Years Amortized Cost AvailableForSaleSecuritiesDebtMaturitiesAfterOneThroughFiveYearsAmortizedCost	2892000	USD
CY2012Q3	us-gaap	Available For Sale Securities Debt Maturities After One Through Five Years Fair Value AvailableForSaleSecuritiesDebtMaturitiesAfterOneThroughFiveYearsFairValue	3064000	USD
CY2012Q3	us-gaap	Available For Sale Securities Debt Maturities After Ten Years Amortized Cost AvailableForSaleSecuritiesDebtMaturitiesAfterTenYearsAmortizedCost	1417000	USD
CY2012Q3	us-gaap	Available For Sale Securities Debt Maturities After Ten Years Fair Value AvailableForSaleSecuritiesDebtMaturitiesAfterTenYearsFairValue	1610000	USD
CY2012Q3	us-gaap	Available For Sale Securities Debt Maturities Within One Year Amortized Cost AvailableForSaleSecuritiesDebtMaturitiesWithinOneYearAmortizedCost	112000	USD
CY2012Q3	us-gaap	Available For Sale Securities Debt Maturities Within One Year Fair Value AvailableForSaleSecuritiesDebtMaturitiesWithinOneYearFairValue	104000	USD
CY2012Q3	us-gaap	Available For Sale Securities Debt Securities AvailableForSaleSecuritiesDebtSecurities	94826000	USD
CY2011Q4	us-gaap	Available For Sale Securities Debt Securities AvailableForSaleSecuritiesDebtSecurities	142052000	USD
	us-gaap	Benefits Losses And Expenses BenefitsLossesAndExpenses	368708000	USD
CY2011Q3	us-gaap	Benefits Losses And Expenses BenefitsLossesAndExpenses	155360000	USD
CY2012Q3	us-gaap	Benefits Losses And Expenses BenefitsLossesAndExpenses	149784000	USD
	us-gaap	Benefits Losses And Expenses BenefitsLossesAndExpenses	1083505000	USD
CY2011Q4	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	216984000	USD
CY2012Q3	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	249123000	USD
CY2010Q4	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	277738000	USD
CY2011Q3	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	235058000	USD
	us-gaap	Cash And Cash Equivalents Period Increase Decrease CashAndCashEquivalentsPeriodIncreaseDecrease	32139000	USD
	us-gaap	Cash And Cash Equivalents Period Increase Decrease CashAndCashEquivalentsPeriodIncreaseDecrease	-42680000	USD
	us-gaap	Ceded Premiums Written CededPremiumsWritten	408426000	USD
	us-gaap	Ceded Premiums Written CededPremiumsWritten	442606000	USD
CY2012Q3	us-gaap	Ceded Premiums Written CededPremiumsWritten	31324000	USD
CY2011Q3	us-gaap	Ceded Premiums Written CededPremiumsWritten	36928000	USD
CY2012Q3	us-gaap	Commitments And Contingencies CommitmentsAndContingencies		USD
CY2011Q4	us-gaap	Commitments And Contingencies CommitmentsAndContingencies		USD
CY2012Q3	us-gaap	Common Stock Dividends Per Share Declared CommonStockDividendsPerShareDeclared	0.27
CY2011Q3	us-gaap	Common Stock Dividends Per Share Declared CommonStockDividendsPerShareDeclared	0.26
	us-gaap	Common Stock Dividends Per Share Declared CommonStockDividendsPerShareDeclared	0.81
	us-gaap	Common Stock Dividends Per Share Declared CommonStockDividendsPerShareDeclared	0.78
CY2012Q3	us-gaap	Common Stock Par Or Stated Value Per Share CommonStockParOrStatedValuePerShare	1
CY2011Q4	us-gaap	Common Stock Par Or Stated Value Per Share CommonStockParOrStatedValuePerShare	1
CY2012Q3	us-gaap	Common Stock Shares Issued CommonStockSharesIssued	48228296	shares
CY2011Q4	us-gaap	Common Stock Shares Issued CommonStockSharesIssued	51542955	shares
CY2012Q3	us-gaap	Common Stock Shares Outstanding CommonStockSharesOutstanding	48228296	shares
CY2011Q4	us-gaap	Common Stock Shares Outstanding CommonStockSharesOutstanding	51542955	shares
CY2012Q3	us-gaap	Common Stock Value CommonStockValue	48228000	USD
CY2011Q4	us-gaap	Common Stock Value CommonStockValue	51543000	USD
	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	552916000	USD
CY2012Q3	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	190946000	USD
CY2011Q3	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	51074000	USD
	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	-156487000	USD
CY2011Q3	us-gaap	Comprehensive Income Net Of Tax Attributable To Noncontrolling Interest ComprehensiveIncomeNetOfTaxAttributableToNoncontrollingInterest	5044000	USD
	us-gaap	Comprehensive Income Net Of Tax Attributable To Noncontrolling Interest ComprehensiveIncomeNetOfTaxAttributableToNoncontrollingInterest	-58551000	USD
	us-gaap	Comprehensive Income Net Of Tax Attributable To Noncontrolling Interest ComprehensiveIncomeNetOfTaxAttributableToNoncontrollingInterest	138348000	USD
CY2012Q3	us-gaap	Comprehensive Income Net Of Tax Attributable To Noncontrolling Interest ComprehensiveIncomeNetOfTaxAttributableToNoncontrollingInterest	51083000	USD
CY2011Q3	us-gaap	Comprehensive Income Net Of Tax Including Portion Attributable To Noncontrolling Interest ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest	56118000	USD
CY2012Q3	us-gaap	Comprehensive Income Net Of Tax Including Portion Attributable To Noncontrolling Interest ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest	242029000	USD
	us-gaap	Comprehensive Income Net Of Tax Including Portion Attributable To Noncontrolling Interest ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest	-215038000	USD
	us-gaap	Comprehensive Income Net Of Tax Including Portion Attributable To Noncontrolling Interest ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest	691264000	USD
	us-gaap	Deferred Policy Acquisition Cost Amortization Expense DeferredPolicyAcquisitionCostAmortizationExpense	74157000	USD
CY2011Q3	us-gaap	Deferred Policy Acquisition Cost Amortization Expense DeferredPolicyAcquisitionCostAmortizationExpense	26057000	USD
CY2012Q3	us-gaap	Deferred Policy Acquisition Cost Amortization Expense DeferredPolicyAcquisitionCostAmortizationExpense	24438000	USD
	us-gaap	Deferred Policy Acquisition Cost Amortization Expense DeferredPolicyAcquisitionCostAmortizationExpense	72275000	USD
CY2012Q3	us-gaap	Deferred Policy Acquisition Costs DeferredPolicyAcquisitionCosts	83222000	USD
CY2011Q4	us-gaap	Deferred Policy Acquisition Costs DeferredPolicyAcquisitionCosts	43721000	USD
	us-gaap	Depreciation Amortization And Accretion Net DepreciationAmortizationAndAccretionNet	45303000	USD
	us-gaap	Depreciation Amortization And Accretion Net DepreciationAmortizationAndAccretionNet	27040000	USD
CY2012Q3	us-gaap	Derivative Asset Fair Value Net DerivativeAssetFairValueNet	51577000	USD
CY2011Q4	us-gaap	Derivative Asset Fair Value Net DerivativeAssetFairValueNet	60939000	USD
CY2011Q3	us-gaap	Derivative Instruments Gain Loss Recognized In Income Net DerivativeInstrumentsGainLossRecognizedInIncomeNet	-17819000	USD
CY2012Q3	us-gaap	Derivative Instruments Gain Loss Recognized In Income Net DerivativeInstrumentsGainLossRecognizedInIncomeNet	17973000	USD
	us-gaap	Derivative Instruments Gain Loss Recognized In Income Net DerivativeInstrumentsGainLossRecognizedInIncomeNet	-16913000	USD
	us-gaap	Derivative Instruments Gain Loss Recognized In Income Net DerivativeInstrumentsGainLossRecognizedInIncomeNet	-503000	USD
CY2011Q4	us-gaap	Derivative Liability Fair Value Net DerivativeLiabilityFairValueNet	-57627000	USD
CY2012Q3	us-gaap	Derivative Liability Fair Value Net DerivativeLiabilityFairValueNet	-27194000	USD
	us-gaap	Description Of New Accounting Pronouncements Not Yet Adopted DescriptionOfNewAccountingPronouncementsNotYetAdopted	<div style="font-family:Times New Roman;font-size:10pt;"><div style="line-height:120%;padding-top:16px;font-size:10pt;"><font style="font-family:Arial;font-size:10pt;">RECENTLY ISSUED ACCOUNTING PRONOUNCEMENTS NOT YET ADOPTED </font></div><div style="line-height:120%;padding-top:16px;font-size:10pt;"><font style="font-family:Arial;font-size:10pt;font-style:italic;">Disclosures About Offsetting Assets and Liabilities</font></div><div style="line-height:120%;padding-top:8px;font-size:10pt;"><font style="font-family:Arial;font-size:10pt;">In December 2011, the FASB issued ASU No. 2011-11, </font><font style="font-family:Arial;font-size:10pt;font-style:italic;">Disclosures about Offsetting Assets and Liabilities</font><font style="font-family:Arial;font-size:10pt;"> ("ASU 2011-11"). The objective of ASU 2011-11 is to enhance disclosures by requiring improved information about financial instruments and derivative instruments in relation to netting arrangements. ASU 2011-11 is effective for interim and annual periods beginning on or after January 1, 2013, with retrospective presentation of the new disclosure required. The Company is currently evaluating the impact of this guidance; however, since this update affects disclosures only, it is not expected to have a material impact on the Company's consolidated financial statements. </font></div><div style="line-height:120%;padding-top:16px;font-size:10pt;"><font style="font-family:Arial;font-size:10pt;font-style:italic;">Testing Indefinite-Lived Intangible Assets for Impairment</font></div><div style="line-height:120%;padding-top:8px;font-size:10pt;"><font style="font-family:Arial;font-size:10pt;">In July 2012, the FASB issued ASU No. 2012-02, </font><font style="font-family:Arial;font-size:10pt;font-style:italic;">Intangibles - Goodwill and Other (Topic 350): Testing Indefinite-Lived Intangible Asset</font><font style="font-family:Arial;font-size:10pt;">s for Impairment ("ASU 2012-02"). ASU 2012-02 simplifies the guidance for testing the decline in the realizable value of indefinite-lived intangible assets other than goodwill. ASU 2012-02 allows an organization the option to first assess the qualitative factors to determine whether it is necessary to perform the quantitative impairment test. An organization electing to perform a qualitative assessment is no longer required to calculate the fair value of an indefinite-lived intangible asset unless the organization determines, based on a qualitative assessment, that it is “more likely than not” that the asset is impaired. ASU 2012-02 is effective for annual and interim impairment tests performed for fiscal years beginning after September 15, 2012. Early adoption is permitted. The Company is currently evaluating the impact of this guidance; however, it is not expected to have a material impact on the Company's consolidated financial statements.</font></div></div>
	us-gaap	Direct Premiums Written DirectPremiumsWritten	27392000	USD
	us-gaap	Direct Premiums Written DirectPremiumsWritten	21984000	USD
CY2012Q3	us-gaap	Direct Premiums Written DirectPremiumsWritten	7193000	USD
CY2011Q3	us-gaap	Direct Premiums Written DirectPremiumsWritten	6423000	USD
	us-gaap	Dividends Preferred Stock DividendsPreferredStock	26250000	USD
CY2011Q3	us-gaap	Dividends Preferred Stock DividendsPreferredStock	8750000	USD
CY2012Q3	us-gaap	Dividends Preferred Stock DividendsPreferredStock	8750000	USD
	us-gaap	Dividends Preferred Stock DividendsPreferredStock	26250000	USD
CY2012Q3	us-gaap	Due From Affiliates DueFromAffiliates	0	USD
CY2011Q4	us-gaap	Due From Affiliates DueFromAffiliates	0	USD
CY2012Q3	us-gaap	Due To Affiliate Current And Noncurrent DueToAffiliateCurrentAndNoncurrent	0	USD
CY2011Q4	us-gaap	Due To Affiliate Current And Noncurrent DueToAffiliateCurrentAndNoncurrent	0	USD
CY2012Q3	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	3.67
	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	-3.44
	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	10.38
CY2011Q3	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.96
	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	-3.44
	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	10.24
CY2012Q3	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	3.62
CY2011Q3	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.95
	us-gaap	Effect Of Exchange Rate On Cash And Cash Equivalents EffectOfExchangeRateOnCashAndCashEquivalents	1390000	USD
	us-gaap	Effect Of Exchange Rate On Cash And Cash Equivalents EffectOfExchangeRateOnCashAndCashEquivalents	1228000	USD
CY2011Q4	us-gaap	Equity Method Investments EquityMethodInvestments	70714000	USD
CY2012Q3	us-gaap	Equity Method Investments EquityMethodInvestments	82212000	USD
CY2011Q3	us-gaap	Fair Value Assets Measured On Recurring Basis Change In Unrealized Gain Loss Included In Investment Income FairValueAssetsMeasuredOnRecurringBasisChangeInUnrealizedGainLossIncludedInInvestmentIncome	-25612000	USD
CY2012Q3	us-gaap	Fair Value Assets Measured On Recurring Basis Change In Unrealized Gain Loss Included In Investment Income FairValueAssetsMeasuredOnRecurringBasisChangeInUnrealizedGainLossIncludedInInvestmentIncome	7939000	USD
	us-gaap	Fair Value Assets Measured On Recurring Basis Change In Unrealized Gain Loss Included In Investment Income FairValueAssetsMeasuredOnRecurringBasisChangeInUnrealizedGainLossIncludedInInvestmentIncome	24047000	USD
	us-gaap	Fair Value Assets Measured On Recurring Basis Change In Unrealized Gain Loss Included In Investment Income FairValueAssetsMeasuredOnRecurringBasisChangeInUnrealizedGainLossIncludedInInvestmentIncome	3759000	USD
CY2011Q3	us-gaap	Fair Value Assets Measured On Recurring Basis Change In Unrealized Gain Loss Included In Other Income FairValueAssetsMeasuredOnRecurringBasisChangeInUnrealizedGainLossIncludedInOtherIncome	4213000	USD
CY2012Q3	us-gaap	Fair Value Assets Measured On Recurring Basis Change In Unrealized Gain Loss Included In Other Income FairValueAssetsMeasuredOnRecurringBasisChangeInUnrealizedGainLossIncludedInOtherIncome	-4882000	USD
CY2012Q3	us-gaap	Fair Value Investments Entities That Calculate Net Asset Value Per Share Unfunded Committments FairValueInvestmentsEntitiesThatCalculateNetAssetValuePerShareUnfundedCommittments	121198000	USD
CY2011Q3	us-gaap	Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Asset Purchases FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetPurchases	45684000	USD
CY2012Q3	us-gaap	Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Asset Purchases FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetPurchases	30434000	USD
	us-gaap	Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Asset Purchases FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetPurchases	99238000	USD
	us-gaap	Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Asset Purchases FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetPurchases	84983000	USD
CY2011Q3	us-gaap	Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Asset Sales FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetSales	19860000	USD
CY2012Q3	us-gaap	Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Asset Sales FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetSales	11143000	USD
	us-gaap	Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Asset Sales FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetSales	116229000	USD
	us-gaap	Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Asset Sales FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetSales	30884000	USD
CY2011Q3	us-gaap	Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Asset Settlements FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetSettlements	66174000	USD
CY2012Q3	us-gaap	Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Asset Settlements FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetSettlements	25354000	USD
	us-gaap	Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Asset Settlements FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetSettlements	-25387000	USD
	us-gaap	Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Asset Settlements FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetSettlements	105028000	USD
CY2011Q3	us-gaap	Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Asset Transfers Net FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetTransfersNet	0	USD
CY2012Q3	us-gaap	Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Asset Transfers Net FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetTransfersNet	0	USD
	us-gaap	Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Asset Transfers Net FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetTransfersNet	0	USD
	us-gaap	Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Asset Transfers Net FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetTransfersNet	0	USD
CY2011Q2	us-gaap	Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Asset Value FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetValue	475379000	USD
CY2011Q3	us-gaap	Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Asset Value FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetValue	409128000	USD
CY2012Q3	us-gaap	Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Asset Value FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetValue	442478000	USD
CY2012Q2	us-gaap	Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Asset Value FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetValue	452465000	USD
CY2011Q4	us-gaap	Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Asset Value FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetValue	452813000	USD
CY2010Q4	us-gaap	Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Asset Value FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetValue	400386000	USD
CY2012Q3	us-gaap	Foreign Currency Transaction Gain Loss Before Tax ForeignCurrencyTransactionGainLossBeforeTax	3001000	USD
CY2011Q3	us-gaap	Foreign Currency Transaction Gain Loss Before Tax ForeignCurrencyTransactionGainLossBeforeTax	-2650000	USD
	us-gaap	Foreign Currency Transaction Gain Loss Before Tax ForeignCurrencyTransactionGainLossBeforeTax	3951000	USD
	us-gaap	Foreign Currency Transaction Gain Loss Before Tax ForeignCurrencyTransactionGainLossBeforeTax	-6511000	USD
CY2012Q3	us-gaap	Gain Loss On Investments GainLossOnInvestments	76258000	USD
	us-gaap	Gain Loss On Investments GainLossOnInvestments	153374000	USD
	us-gaap	Gain Loss On Investments GainLossOnInvestments	46748000	USD
CY2011Q3	us-gaap	Gain Loss On Investments GainLossOnInvestments	16983000	USD
	us-gaap	General And Administrative Expense GeneralAndAdministrativeExpense	9657000	USD
CY2011Q3	us-gaap	General And Administrative Expense GeneralAndAdministrativeExpense	3582000	USD
CY2012Q3	us-gaap	General And Administrative Expense GeneralAndAdministrativeExpense	3850000	USD
	us-gaap	General And Administrative Expense GeneralAndAdministrativeExpense	12728000	USD
CY2012Q3	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	240691000	USD
CY2011Q3	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	62587000	USD
	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	688796000	USD
	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	-196976000	USD
CY2011Q3	us-gaap	Income Loss From Continuing Operations Before Income Taxes Minority Interest And Income Loss From Equity Method Investments IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments	62587000	USD
CY2012Q3	us-gaap	Income Loss From Continuing Operations Before Income Taxes Minority Interest And Income Loss From Equity Method Investments IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments	240691000	USD
	us-gaap	Income Loss From Continuing Operations Before Income Taxes Minority Interest And Income Loss From Equity Method Investments IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments	-196976000	USD
	us-gaap	Income Loss From Continuing Operations Before Income Taxes Minority Interest And Income Loss From Equity Method Investments IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments	688796000	USD
	us-gaap	Income Loss From Continuing Operations Including Portion Attributable To Noncontrolling Interest IncomeLossFromContinuingOperationsIncludingPortionAttributableToNoncontrollingInterest	-193716000	USD
CY2011Q3	us-gaap	Income Loss From Continuing Operations Including Portion Attributable To Noncontrolling Interest IncomeLossFromContinuingOperationsIncludingPortionAttributableToNoncontrollingInterest	64022000	USD
	us-gaap	Income Loss From Continuing Operations Including Portion Attributable To Noncontrolling Interest IncomeLossFromContinuingOperationsIncludingPortionAttributableToNoncontrollingInterest	687791000	USD
CY2012Q3	us-gaap	Income Loss From Continuing Operations Including Portion Attributable To Noncontrolling Interest IncomeLossFromContinuingOperationsIncludingPortionAttributableToNoncontrollingInterest	240547000	USD
	us-gaap	Income Loss From Continuing Operations Per Basic Share IncomeLossFromContinuingOperationsPerBasicShare	10.36
CY2012Q3	us-gaap	Income Loss From Continuing Operations Per Basic Share IncomeLossFromContinuingOperationsPerBasicShare	3.67
CY2011Q3	us-gaap	Income Loss From Continuing Operations Per Basic Share IncomeLossFromContinuingOperationsPerBasicShare	0.98
CY2012Q3	us-gaap	Income Loss From Continuing Operations Per Diluted Share IncomeLossFromContinuingOperationsPerDilutedShare	3.62
CY2011Q3	us-gaap	Income Loss From Continuing Operations Per Diluted Share IncomeLossFromContinuingOperationsPerDilutedShare	0.97
	us-gaap	Income Loss From Discontinued Operations Net Of Tax IncomeLossFromDiscontinuedOperationsNetOfTax	-12585000	USD
	us-gaap	Income Loss From Discontinued Operations Net Of Tax IncomeLossFromDiscontinuedOperationsNetOfTax	1166000	USD
CY2011Q3	us-gaap	Income Loss From Discontinued Operations Net Of Tax IncomeLossFromDiscontinuedOperationsNetOfTax	-965000	USD
CY2012Q3	us-gaap	Income Loss From Discontinued Operations Net Of Tax IncomeLossFromDiscontinuedOperationsNetOfTax	-54000	USD
CY2011Q3	us-gaap	Income Loss From Discontinued Operations Net Of Tax Per Basic Share IncomeLossFromDiscontinuedOperationsNetOfTaxPerBasicShare	-0.02
	us-gaap	Income Loss From Discontinued Operations Net Of Tax Per Basic Share IncomeLossFromDiscontinuedOperationsNetOfTaxPerBasicShare	0.02
	us-gaap	Income Loss From Discontinued Operations Net Of Tax Per Basic Share IncomeLossFromDiscontinuedOperationsNetOfTaxPerBasicShare	-0.25
CY2012Q3	us-gaap	Income Loss From Discontinued Operations Net Of Tax Per Basic Share IncomeLossFromDiscontinuedOperationsNetOfTaxPerBasicShare	0.00
CY2012Q3	us-gaap	Income Loss From Discontinued Operations Net Of Tax Per Diluted Share IncomeLossFromDiscontinuedOperationsNetOfTaxPerDilutedShare	0.00
	us-gaap	Income Loss From Discontinued Operations Net Of Tax Per Diluted Share IncomeLossFromDiscontinuedOperationsNetOfTaxPerDilutedShare	-0.25
	us-gaap	Income Loss From Discontinued Operations Net Of Tax Per Diluted Share IncomeLossFromDiscontinuedOperationsNetOfTaxPerDilutedShare	0.02
CY2011Q3	us-gaap	Income Loss From Discontinued Operations Net Of Tax Per Diluted Share IncomeLossFromDiscontinuedOperationsNetOfTaxPerDilutedShare	-0.02
	us-gaap	Income Loss From Equity Method Investments IncomeLossFromEquityMethodInvestments	16626000	USD
CY2012Q3	us-gaap	Income Loss From Equity Method Investments IncomeLossFromEquityMethodInvestments	4310000	USD
CY2011Q3	us-gaap	Income Loss From Equity Method Investments IncomeLossFromEquityMethodInvestments	4794000	USD
	us-gaap	Income Loss From Equity Method Investments IncomeLossFromEquityMethodInvestments	-13831000	USD
	us-gaap	Income Loss From Equity Method Investments Net Of Dividends Or Distributions IncomeLossFromEquityMethodInvestmentsNetOfDividendsOrDistributions	12309000	USD
	us-gaap	Income Loss From Equity Method Investments Net Of Dividends Or Distributions IncomeLossFromEquityMethodInvestmentsNetOfDividendsOrDistributions	-14552000	USD
	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	1005000	USD
CY2012Q3	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	144000	USD
	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	-3260000	USD
CY2011Q3	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	-1435000	USD
	us-gaap	Increase Decrease In Deferred Policy Acquisition Costs IncreaseDecreaseInDeferredPolicyAcquisitionCosts	35577000	USD
	us-gaap	Increase Decrease In Deferred Policy Acquisition Costs IncreaseDecreaseInDeferredPolicyAcquisitionCosts	39501000	USD
	us-gaap	Increase Decrease In Other Operating Capital Net IncreaseDecreaseInOtherOperatingCapitalNet	39802000	USD
	us-gaap	Increase Decrease In Other Operating Capital Net IncreaseDecreaseInOtherOperatingCapitalNet	63643000	USD
	us-gaap	Increase Decrease In Premiums Receivable IncreaseDecreaseInPremiumsReceivable	229362000	USD
	us-gaap	Increase Decrease In Premiums Receivable IncreaseDecreaseInPremiumsReceivable	373083000	USD
	us-gaap	Increase Decrease In Prepaid Reinsurance Premiums IncreaseDecreaseInPrepaidReinsurancePremiums	131070000	USD
	us-gaap	Increase Decrease In Prepaid Reinsurance Premiums IncreaseDecreaseInPrepaidReinsurancePremiums	103904000	USD
	us-gaap	Increase Decrease In Reinsurance Payables IncreaseDecreaseInReinsurancePayables	-397000	USD
	us-gaap	Increase Decrease In Reinsurance Payables IncreaseDecreaseInReinsurancePayables	99253000	USD
	us-gaap	Increase Decrease In Reinsurance Recoverable IncreaseDecreaseInReinsuranceRecoverable	332842000	USD
	us-gaap	Increase Decrease In Reinsurance Recoverable IncreaseDecreaseInReinsuranceRecoverable	-194539000	USD
	us-gaap	Increase Decrease In Unearned Premiums IncreaseDecreaseInUnearnedPremiums	337413000	USD
	us-gaap	Increase Decrease In Unearned Premiums IncreaseDecreaseInUnearnedPremiums	370606000	USD
CY2011Q3	us-gaap	Incremental Common Shares Attributable To Share Based Payment Arrangements IncrementalCommonSharesAttributableToShareBasedPaymentArrangements	472000	shares
CY2012Q3	us-gaap	Incremental Common Shares Attributable To Share Based Payment Arrangements IncrementalCommonSharesAttributableToShareBasedPaymentArrangements	725000	shares
	us-gaap	Incremental Common Shares Attributable To Share Based Payment Arrangements IncrementalCommonSharesAttributableToShareBasedPaymentArrangements	0	shares
	us-gaap	Incremental Common Shares Attributable To Share Based Payment Arrangements IncrementalCommonSharesAttributableToShareBasedPaymentArrangements	687000	shares
	us-gaap	Interest Expense InterestExpense	17325000	USD
CY2012Q3	us-gaap	Interest Expense InterestExpense	5891000	USD
CY2011Q3	us-gaap	Interest Expense InterestExpense	5722000	USD
	us-gaap	Interest Expense InterestExpense	17647000	USD
	us-gaap	Investment Income Investment Expense InvestmentIncomeInvestmentExpense	7898000	USD
CY2012Q3	us-gaap	Investment Income Investment Expense InvestmentIncomeInvestmentExpense	3204000	USD
CY2011Q3	us-gaap	Investment Income Investment Expense InvestmentIncomeInvestmentExpense	2526000	USD
CY2011Q4	us-gaap	Investments Investments	6209252000	USD
CY2012Q3	us-gaap	Investments Investments	6755551000	USD
CY2012Q3	us-gaap	Investments In Affiliates Subsidiaries Associates And Joint Ventures InvestmentsInAffiliatesSubsidiariesAssociatesAndJointVentures	0	USD
CY2011Q4	us-gaap	Investments In Affiliates Subsidiaries Associates And Joint Ventures InvestmentsInAffiliatesSubsidiariesAssociatesAndJointVentures	0	USD
CY2012Q3	us-gaap	Liabilities Liabilities	3999751000	USD
CY2011Q4	us-gaap	Liabilities Liabilities	3478652000	USD
CY2012Q3	us-gaap	Liabilities And Stockholders Equity LiabilitiesAndStockholdersEquity	8793508000	USD
CY2011Q4	us-gaap	Liabilities And Stockholders Equity LiabilitiesAndStockholdersEquity	7744912000	USD
CY2011Q4	us-gaap	Liabilities Of Disposal Group Including Discontinued Operation LiabilitiesOfDisposalGroupIncludingDiscontinuedOperation	13507000	USD
CY2012Q3	us-gaap	Liabilities Of Disposal Group Including Discontinued Operation LiabilitiesOfDisposalGroupIncludingDiscontinuedOperation	1318000	USD
CY2011Q4	us-gaap	Liability For Claims And Claims Adjustment Expense LiabilityForClaimsAndClaimsAdjustmentExpense	1992354000	USD
CY2012Q3	us-gaap	Liability For Claims And Claims Adjustment Expense LiabilityForClaimsAndClaimsAdjustmentExpense	1782680000	USD
CY2012Q3	us-gaap	Liability For Unpaid Claims And Claims Adjustment Expense Incurred Claims LiabilityForUnpaidClaimsAndClaimsAdjustmentExpenseIncurredClaims	73215000	USD
	us-gaap	Liability For Unpaid Claims And Claims Adjustment Expense Incurred Claims LiabilityForUnpaidClaimsAndClaimsAdjustmentExpenseIncurredClaims	138318000	USD
CY2011Q3	us-gaap	Liability For Unpaid Claims And Claims Adjustment Expense Incurred Claims LiabilityForUnpaidClaimsAndClaimsAdjustmentExpenseIncurredClaims	77830000	USD
	us-gaap	Liability For Unpaid Claims And Claims Adjustment Expense Incurred Claims LiabilityForUnpaidClaimsAndClaimsAdjustmentExpenseIncurredClaims	857628000	USD
CY2012Q3	us-gaap	Liability For Unpaid Claims And Claims Adjustment Expense Incurred Claims Current Year LiabilityForUnpaidClaimsAndClaimsAdjustmentExpenseIncurredClaimsCurrentYear	93539000	USD
	us-gaap	Liability For Unpaid Claims And Claims Adjustment Expense Incurred Claims Current Year LiabilityForUnpaidClaimsAndClaimsAdjustmentExpenseIncurredClaimsCurrentYear	259960000	USD
CY2011Q3	us-gaap	Liability For Unpaid Claims And Claims Adjustment Expense Incurred Claims Current Year LiabilityForUnpaidClaimsAndClaimsAdjustmentExpenseIncurredClaimsCurrentYear	86430000	USD
	us-gaap	Liability For Unpaid Claims And Claims Adjustment Expense Incurred Claims Current Year LiabilityForUnpaidClaimsAndClaimsAdjustmentExpenseIncurredClaimsCurrentYear	955059000	USD
CY2012Q3	us-gaap	Liability For Unpaid Claims And Claims Adjustment Expense Incurred Claims Prior Years LiabilityForUnpaidClaimsAndClaimsAdjustmentExpenseIncurredClaimsPriorYears	-20324000	USD
	us-gaap	Liability For Unpaid Claims And Claims Adjustment Expense Incurred Claims Prior Years LiabilityForUnpaidClaimsAndClaimsAdjustmentExpenseIncurredClaimsPriorYears	-121642000	USD
CY2011Q3	us-gaap	Liability For Unpaid Claims And Claims Adjustment Expense Incurred Claims Prior Years LiabilityForUnpaidClaimsAndClaimsAdjustmentExpenseIncurredClaimsPriorYears	-8600000	USD
	us-gaap	Liability For Unpaid Claims And Claims Adjustment Expense Incurred Claims Prior Years LiabilityForUnpaidClaimsAndClaimsAdjustmentExpenseIncurredClaimsPriorYears	-97431000	USD
	us-gaap	Liability For Unpaid Claims And Claims Adjustment Expense Period Increase Decrease LiabilityForUnpaidClaimsAndClaimsAdjustmentExpensePeriodIncreaseDecrease	-968162000	USD
	us-gaap	Liability For Unpaid Claims And Claims Adjustment Expense Period Increase Decrease LiabilityForUnpaidClaimsAndClaimsAdjustmentExpensePeriodIncreaseDecrease	209674000	USD
CY2012Q3	us-gaap	Marketable Securities Fixed Maturities MarketableSecuritiesFixedMaturities	5184366000	USD
CY2011Q4	us-gaap	Marketable Securities Fixed Maturities MarketableSecuritiesFixedMaturities	4433517000	USD
CY2012Q3	us-gaap	Minority Interest MinorityInterest	3979000	USD
CY2011Q4	us-gaap	Minority Interest MinorityInterest	3340000	USD
	us-gaap	Minority Interest In Net Income Loss Other Minority Interests MinorityInterestInNetIncomeLossOtherMinorityInterests	138348000	USD
CY2012Q3	us-gaap	Minority Interest In Net Income Loss Other Minority Interests MinorityInterestInNetIncomeLossOtherMinorityInterests	51083000	USD
CY2011Q3	us-gaap	Minority Interest In Net Income Loss Other Minority Interests MinorityInterestInNetIncomeLossOtherMinorityInterests	5044000	USD
	us-gaap	Minority Interest In Net Income Loss Other Minority Interests MinorityInterestInNetIncomeLossOtherMinorityInterests	-58545000	USD
	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	-161546000	USD
	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	-500498000	USD
	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	-343371000	USD
	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	262104000	USD
	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	194486000	USD
	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	535666000	USD
	us-gaap	Net Income Loss NetIncomeLoss	550609000	USD
	us-gaap	Net Income Loss NetIncomeLoss	-147756000	USD
CY2011Q3	us-gaap	Net Income Loss NetIncomeLoss	58013000	USD
CY2012Q3	us-gaap	Net Income Loss NetIncomeLoss	189410000	USD
CY2011Q3	us-gaap	Net Income Loss Attributable To Noncontrolling Interest NetIncomeLossAttributableToNoncontrollingInterest	5044000	USD
	us-gaap	Net Income Loss Attributable To Noncontrolling Interest NetIncomeLossAttributableToNoncontrollingInterest	138348000	USD
CY2012Q3	us-gaap	Net Income Loss Attributable To Noncontrolling Interest NetIncomeLossAttributableToNoncontrollingInterest	51083000	USD
	us-gaap	Net Income Loss Attributable To Noncontrolling Interest NetIncomeLossAttributableToNoncontrollingInterest	-58545000	USD
CY2012Q3	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	180660000	USD
	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	524359000	USD
CY2011Q3	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	49263000	USD
	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	-174006000	USD
	us-gaap	Net Investment Income NetInvestmentIncome	126878000	USD
	us-gaap	Net Investment Income NetInvestmentIncome	65669000	USD
CY2011Q3	us-gaap	Net Investment Income NetInvestmentIncome	-27940000	USD
CY2012Q3	us-gaap	Net Investment Income NetInvestmentIncome	45164000	USD
CY2012Q3	us-gaap	Notes And Loans Payable NotesAndLoansPayable	358595000	USD
CY2011Q4	us-gaap	Notes And Loans Payable NotesAndLoansPayable	353620000	USD
CY2012Q3	us-gaap	Other Assets OtherAssets	215008000	USD
CY2011Q4	us-gaap	Other Assets OtherAssets	180992000	USD
CY2012Q3	us-gaap	Other Assets Fair Value Disclosure OtherAssetsFairValueDisclosure	25214000	USD
CY2011Q4	us-gaap	Other Assets Fair Value Disclosure OtherAssetsFairValueDisclosure	19628000	USD
	us-gaap	Other Comprehensive Income Availableforsale Securities Adjustment Net Of Tax Portion Attributable To Noncontrolling Interest OtherComprehensiveIncomeAvailableforsaleSecuritiesAdjustmentNetOfTaxPortionAttributableToNoncontrollingInterest	0	USD
CY2012Q3	us-gaap	Other Comprehensive Income Availableforsale Securities Adjustment Net Of Tax Portion Attributable To Noncontrolling Interest OtherComprehensiveIncomeAvailableforsaleSecuritiesAdjustmentNetOfTaxPortionAttributableToNoncontrollingInterest	0	USD
	us-gaap	Other Comprehensive Income Availableforsale Securities Adjustment Net Of Tax Portion Attributable To Noncontrolling Interest OtherComprehensiveIncomeAvailableforsaleSecuritiesAdjustmentNetOfTaxPortionAttributableToNoncontrollingInterest	-6000	USD
CY2011Q3	us-gaap	Other Comprehensive Income Availableforsale Securities Adjustment Net Of Tax Portion Attributable To Noncontrolling Interest OtherComprehensiveIncomeAvailableforsaleSecuritiesAdjustmentNetOfTaxPortionAttributableToNoncontrollingInterest	0	USD
	us-gaap	Other Comprehensive Income Availableforsale Securities Adjustment Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeAvailableforsaleSecuritiesAdjustmentNetOfTaxPortionAttributableToParent	8682000	USD
CY2012Q3	us-gaap	Other Comprehensive Income Availableforsale Securities Adjustment Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeAvailableforsaleSecuritiesAdjustmentNetOfTaxPortionAttributableToParent	-1536000	USD
	us-gaap	Other Comprehensive Income Availableforsale Securities Adjustment Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeAvailableforsaleSecuritiesAdjustmentNetOfTaxPortionAttributableToParent	-2359000	USD
CY2011Q3	us-gaap	Other Comprehensive Income Availableforsale Securities Adjustment Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeAvailableforsaleSecuritiesAdjustmentNetOfTaxPortionAttributableToParent	6890000	USD
CY2012Q3	us-gaap	Other Comprehensive Income Unrealized Holding Gain Loss On Securities Arising During Period Net Of Tax OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodNetOfTax	1536000	USD
CY2011Q3	us-gaap	Other Comprehensive Income Unrealized Holding Gain Loss On Securities Arising During Period Net Of Tax OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodNetOfTax	-6890000	USD
	us-gaap	Other Comprehensive Income Unrealized Holding Gain Loss On Securities Arising During Period Net Of Tax OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodNetOfTax	2359000	USD
	us-gaap	Other Comprehensive Income Unrealized Holding Gain Loss On Securities Arising During Period Net Of Tax OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodNetOfTax	-8688000	USD
CY2011Q3	us-gaap	Other Cost And Expense Operating OtherCostAndExpenseOperating	42169000	USD
	us-gaap	Other Cost And Expense Operating OtherCostAndExpenseOperating	126180000	USD
CY2012Q3	us-gaap	Other Cost And Expense Operating OtherCostAndExpenseOperating	42390000	USD
	us-gaap	Other Cost And Expense Operating OtherCostAndExpenseOperating	126298000	USD
CY2011Q4	us-gaap	Other Investments OtherInvestments	748984000	USD
CY2012Q3	us-gaap	Other Investments OtherInvestments	752000000	USD
CY2012Q3	us-gaap	Other Liabilities OtherLiabilities	206709000	USD
CY2011Q4	us-gaap	Other Liabilities OtherLiabilities	211369000	USD
	us-gaap	Other Operating Income Expense Net OtherOperatingIncomeExpenseNet	-28686000	USD
	us-gaap	Other Operating Income Expense Net OtherOperatingIncomeExpenseNet	42963000	USD
CY2012Q3	us-gaap	Other Operating Income Expense Net OtherOperatingIncomeExpenseNet	-881000	USD
CY2011Q3	us-gaap	Other Operating Income Expense Net OtherOperatingIncomeExpenseNet	-2015000	USD
CY2011Q4	us-gaap	Other Short Term Investments OtherShortTermInvestments	905477000	USD
CY2012Q3	us-gaap	Other Short Term Investments OtherShortTermInvestments	679356000	USD
	us-gaap	Other Than Temporary Impairment Credit Losses Recognized In Earnings Additions Additional Credit Losses OtherThanTemporaryImpairmentCreditLossesRecognizedInEarningsAdditionsAdditionalCreditLosses	134000	USD
	us-gaap	Other Than Temporary Impairment Credit Losses Recognized In Earnings Additions Additional Credit Losses OtherThanTemporaryImpairmentCreditLossesRecognizedInEarningsAdditionsAdditionalCreditLosses	50000	USD
CY2011Q3	us-gaap	Other Than Temporary Impairment Credit Losses Recognized In Earnings Additions Additional Credit Losses OtherThanTemporaryImpairmentCreditLossesRecognizedInEarningsAdditionsAdditionalCreditLosses	134000	USD
CY2012Q3	us-gaap	Other Than Temporary Impairment Credit Losses Recognized In Earnings Additions Additional Credit Losses OtherThanTemporaryImpairmentCreditLossesRecognizedInEarningsAdditionsAdditionalCreditLosses	0	USD
	us-gaap	Other Than Temporary Impairment Credit Losses Recognized In Earnings Additions No Previous Impairment OtherThanTemporaryImpairmentCreditLossesRecognizedInEarningsAdditionsNoPreviousImpairment	11000	USD
	us-gaap	Other Than Temporary Impairment Credit Losses Recognized In Earnings Additions No Previous Impairment OtherThanTemporaryImpairmentCreditLossesRecognizedInEarningsAdditionsNoPreviousImpairment	30000	USD
CY2012Q3	us-gaap	Other Than Temporary Impairment Credit Losses Recognized In Earnings Additions No Previous Impairment OtherThanTemporaryImpairmentCreditLossesRecognizedInEarningsAdditionsNoPreviousImpairment	0	USD
CY2011Q3	us-gaap	Other Than Temporary Impairment Credit Losses Recognized In Earnings Additions No Previous Impairment OtherThanTemporaryImpairmentCreditLossesRecognizedInEarningsAdditionsNoPreviousImpairment	30000	USD
CY2011Q3	us-gaap	Other Than Temporary Impairment Credit Losses Recognized In Earnings Credit Losses On Debt Securities Held OtherThanTemporaryImpairmentCreditLossesRecognizedInEarningsCreditLossesOnDebtSecuritiesHeld	537000	USD
CY2010Q4	us-gaap	Other Than Temporary Impairment Credit Losses Recognized In Earnings Credit Losses On Debt Securities Held OtherThanTemporaryImpairmentCreditLossesRecognizedInEarningsCreditLossesOnDebtSecuritiesHeld	3098000	USD
CY2012Q3	us-gaap	Other Than Temporary Impairment Credit Losses Recognized In Earnings Credit Losses On Debt Securities Held OtherThanTemporaryImpairmentCreditLossesRecognizedInEarningsCreditLossesOnDebtSecuritiesHeld	125000	USD
CY2011Q4	us-gaap	Other Than Temporary Impairment Credit Losses Recognized In Earnings Credit Losses On Debt Securities Held OtherThanTemporaryImpairmentCreditLossesRecognizedInEarningsCreditLossesOnDebtSecuritiesHeld	564000	USD
CY2012Q2	us-gaap	Other Than Temporary Impairment Credit Losses Recognized In Earnings Credit Losses On Debt Securities Held OtherThanTemporaryImpairmentCreditLossesRecognizedInEarningsCreditLossesOnDebtSecuritiesHeld	176000	USD
CY2011Q2	us-gaap	Other Than Temporary Impairment Credit Losses Recognized In Earnings Credit Losses On Debt Securities Held OtherThanTemporaryImpairmentCreditLossesRecognizedInEarningsCreditLossesOnDebtSecuritiesHeld	2629000	USD
	us-gaap	Other Than Temporary Impairment Credit Losses Recognized In Earnings Reductions Cash Flows OtherThanTemporaryImpairmentCreditLossesRecognizedInEarningsReductionsCashFlows	0	USD
	us-gaap	Other Than Temporary Impairment Credit Losses Recognized In Earnings Reductions Cash Flows OtherThanTemporaryImpairmentCreditLossesRecognizedInEarningsReductionsCashFlows	0	USD
CY2012Q3	us-gaap	Other Than Temporary Impairment Credit Losses Recognized In Earnings Reductions Cash Flows OtherThanTemporaryImpairmentCreditLossesRecognizedInEarningsReductionsCashFlows	0	USD
CY2011Q3	us-gaap	Other Than Temporary Impairment Credit Losses Recognized In Earnings Reductions Cash Flows OtherThanTemporaryImpairmentCreditLossesRecognizedInEarningsReductionsCashFlows	0	USD
	us-gaap	Other Than Temporary Impairment Credit Losses Recognized In Earnings Reductions Change In Status OtherThanTemporaryImpairmentCreditLossesRecognizedInEarningsReductionsChangeInStatus	0	USD
	us-gaap	Other Than Temporary Impairment Credit Losses Recognized In Earnings Reductions Change In Status OtherThanTemporaryImpairmentCreditLossesRecognizedInEarningsReductionsChangeInStatus	0	USD
CY2011Q3	us-gaap	Other Than Temporary Impairment Credit Losses Recognized In Earnings Reductions Change In Status OtherThanTemporaryImpairmentCreditLossesRecognizedInEarningsReductionsChangeInStatus	0	USD
CY2012Q3	us-gaap	Other Than Temporary Impairment Credit Losses Recognized In Earnings Reductions Change In Status OtherThanTemporaryImpairmentCreditLossesRecognizedInEarningsReductionsChangeInStatus	0	USD
	us-gaap	Other Than Temporary Impairment Credit Losses Recognized In Earnings Reductions Securities Sold OtherThanTemporaryImpairmentCreditLossesRecognizedInEarningsReductionsSecuritiesSold	2725000	USD
	us-gaap	Other Than Temporary Impairment Credit Losses Recognized In Earnings Reductions Securities Sold OtherThanTemporaryImpairmentCreditLossesRecognizedInEarningsReductionsSecuritiesSold	500000	USD
CY2012Q3	us-gaap	Other Than Temporary Impairment Credit Losses Recognized In Earnings Reductions Securities Sold OtherThanTemporaryImpairmentCreditLossesRecognizedInEarningsReductionsSecuritiesSold	51000	USD
CY2011Q3	us-gaap	Other Than Temporary Impairment Credit Losses Recognized In Earnings Reductions Securities Sold OtherThanTemporaryImpairmentCreditLossesRecognizedInEarningsReductionsSecuritiesSold	2256000	USD
CY2012Q3	us-gaap	Other Than Temporary Impairment Losses Investments Availableforsale Securities OtherThanTemporaryImpairmentLossesInvestmentsAvailableforsaleSecurities	0	USD
	us-gaap	Other Than Temporary Impairment Losses Investments Availableforsale Securities OtherThanTemporaryImpairmentLossesInvestmentsAvailableforsaleSecurities	395000	USD
	us-gaap	Other Than Temporary Impairment Losses Investments Availableforsale Securities OtherThanTemporaryImpairmentLossesInvestmentsAvailableforsaleSecurities	498000	USD
CY2011Q3	us-gaap	Other Than Temporary Impairment Losses Investments Availableforsale Securities OtherThanTemporaryImpairmentLossesInvestmentsAvailableforsaleSecurities	498000	USD
CY2012Q3	us-gaap	Other Than Temporary Impairment Losses Investments Portion In Other Comprehensive Income Loss Before Tax Including Portion Attributable To Noncontrolling Interest Availableforsale Securities OtherThanTemporaryImpairmentLossesInvestmentsPortionInOtherComprehensiveIncomeLossBeforeTaxIncludingPortionAttributableToNoncontrollingInterestAvailableforsaleSecurities	0	USD
	us-gaap	Other Than Temporary Impairment Losses Investments Portion In Other Comprehensive Income Loss Before Tax Including Portion Attributable To Noncontrolling Interest Availableforsale Securities OtherThanTemporaryImpairmentLossesInvestmentsPortionInOtherComprehensiveIncomeLossBeforeTaxIncludingPortionAttributableToNoncontrollingInterestAvailableforsaleSecurities	49000	USD
CY2011Q3	us-gaap	Other Than Temporary Impairment Losses Investments Portion In Other Comprehensive Income Loss Before Tax Including Portion Attributable To Noncontrolling Interest Availableforsale Securities OtherThanTemporaryImpairmentLossesInvestmentsPortionInOtherComprehensiveIncomeLossBeforeTaxIncludingPortionAttributableToNoncontrollingInterestAvailableforsaleSecurities	49000	USD
	us-gaap	Other Than Temporary Impairment Losses Investments Portion In Other Comprehensive Income Loss Before Tax Including Portion Attributable To Noncontrolling Interest Availableforsale Securities OtherThanTemporaryImpairmentLossesInvestmentsPortionInOtherComprehensiveIncomeLossBeforeTaxIncludingPortionAttributableToNoncontrollingInterestAvailableforsaleSecurities	52000	USD
	us-gaap	Other Than Temporary Impairment Losses Investments Portion Recognized In Earnings Net Availableforsale Securities OtherThanTemporaryImpairmentLossesInvestmentsPortionRecognizedInEarningsNetAvailableforsaleSecurities	449000	USD
CY2011Q3	us-gaap	Other Than Temporary Impairment Losses Investments Portion Recognized In Earnings Net Availableforsale Securities OtherThanTemporaryImpairmentLossesInvestmentsPortionRecognizedInEarningsNetAvailableforsaleSecurities	449000	USD
CY2012Q3	us-gaap	Other Than Temporary Impairment Losses Investments Portion Recognized In Earnings Net Availableforsale Securities OtherThanTemporaryImpairmentLossesInvestmentsPortionRecognizedInEarningsNetAvailableforsaleSecurities	0	USD
	us-gaap	Other Than Temporary Impairment Losses Investments Portion Recognized In Earnings Net Availableforsale Securities OtherThanTemporaryImpairmentLossesInvestmentsPortionRecognizedInEarningsNetAvailableforsaleSecurities	343000	USD
CY2011Q4	us-gaap	Payables To Broker Dealers And Clearing Organizations PayablesToBrokerDealersAndClearingOrganizations	303264000	USD
CY2012Q3	us-gaap	Payables To Broker Dealers And Clearing Organizations PayablesToBrokerDealersAndClearingOrganizations	576052000	USD
	us-gaap	Payments For Proceeds From Other Investing Activities PaymentsForProceedsFromOtherInvestingActivities	-58568000	USD
	us-gaap	Payments For Proceeds From Other Investing Activities PaymentsForProceedsFromOtherInvestingActivities	4204000	USD
	us-gaap	Payments For Repurchase Of Common Stock PaymentsForRepurchaseOfCommonStock	257461000	USD
	us-gaap	Payments For Repurchase Of Common Stock PaymentsForRepurchaseOfCommonStock	174792000	USD
	us-gaap	Payments For Repurchase Of Redeemable Noncontrolling Interest PaymentsForRepurchaseOfRedeemableNoncontrollingInterest	-157999000	USD
	us-gaap	Payments For Repurchase Of Redeemable Noncontrolling Interest PaymentsForRepurchaseOfRedeemableNoncontrollingInterest	59357000	USD
	us-gaap	Payments Of Dividends Common Stock PaymentsOfDividendsCommonStock	40099000	USD
	us-gaap	Payments Of Dividends Common Stock PaymentsOfDividendsCommonStock	40741000	USD
	us-gaap	Payments Of Dividends Preferred Stock And Preference Stock PaymentsOfDividendsPreferredStockAndPreferenceStock	26250000	USD
	us-gaap	Payments Of Dividends Preferred Stock And Preference Stock PaymentsOfDividendsPreferredStockAndPreferenceStock	26250000	USD
	us-gaap	Payments To Acquire Equity Method Investments PaymentsToAcquireEquityMethodInvestments	21000000	USD
	us-gaap	Payments To Acquire Equity Method Investments PaymentsToAcquireEquityMethodInvestments	0	USD
	us-gaap	Payments To Acquire Trading Securities Heldforinvestment PaymentsToAcquireTradingSecuritiesHeldforinvestment	4353649000	USD
	us-gaap	Payments To Acquire Trading Securities Heldforinvestment PaymentsToAcquireTradingSecuritiesHeldforinvestment	6886239000	USD
	us-gaap	Policyholder Benefits And Claims Incurred Gross PolicyholderBenefitsAndClaimsIncurredGross	1207657000	USD
	us-gaap	Policyholder Benefits And Claims Incurred Gross PolicyholderBenefitsAndClaimsIncurredGross	168572000	USD
CY2011Q3	us-gaap	Policyholder Benefits And Claims Incurred Gross PolicyholderBenefitsAndClaimsIncurredGross	179664000	USD
CY2012Q3	us-gaap	Policyholder Benefits And Claims Incurred Gross PolicyholderBenefitsAndClaimsIncurredGross	83189000	USD
CY2011Q3	us-gaap	Policyholder Benefits And Claims Incurred Net PolicyholderBenefitsAndClaimsIncurredNet	77830000	USD
	us-gaap	Policyholder Benefits And Claims Incurred Net PolicyholderBenefitsAndClaimsIncurredNet	857628000	USD
	us-gaap	Policyholder Benefits And Claims Incurred Net PolicyholderBenefitsAndClaimsIncurredNet	138318000	USD
CY2012Q3	us-gaap	Policyholder Benefits And Claims Incurred Net PolicyholderBenefitsAndClaimsIncurredNet	73215000	USD
CY2012Q3	us-gaap	Preferred Stock Par Or Stated Value Per Share PreferredStockParOrStatedValuePerShare	1
CY2011Q4	us-gaap	Preferred Stock Par Or Stated Value Per Share PreferredStockParOrStatedValuePerShare	1
CY2012Q3	us-gaap	Preferred Stock Shares Issued PreferredStockSharesIssued	22000000	shares
CY2011Q4	us-gaap	Preferred Stock Shares Issued PreferredStockSharesIssued	22000000	shares
CY2012Q3	us-gaap	Preferred Stock Shares Outstanding PreferredStockSharesOutstanding	22000000	shares
CY2011Q4	us-gaap	Preferred Stock Shares Outstanding PreferredStockSharesOutstanding	22000000	shares
CY2011Q4	us-gaap	Preferred Stock Value PreferredStockValue	550000000	USD
CY2012Q3	us-gaap	Preferred Stock Value PreferredStockValue	550000000	USD
CY2011Q3	us-gaap	Premiums Earned Net PremiumsEarnedNet	229224000	USD
	us-gaap	Premiums Earned Net PremiumsEarnedNet	751940000	USD
	us-gaap	Premiums Earned Net PremiumsEarnedNet	785704000	USD
CY2012Q3	us-gaap	Premiums Earned Net PremiumsEarnedNet	262623000	USD
CY2011Q4	us-gaap	Premiums Receivable At Carrying Value PremiumsReceivableAtCarryingValue	471878000	USD
CY2012Q3	us-gaap	Premiums Receivable At Carrying Value PremiumsReceivableAtCarryingValue	701240000	USD
	us-gaap	Premiums Written Net PremiumsWrittenNet	1025240000	USD
CY2011Q3	us-gaap	Premiums Written Net PremiumsWrittenNet	103010000	USD
	us-gaap	Premiums Written Net PremiumsWrittenNet	983580000	USD
CY2012Q3	us-gaap	Premiums Written Net PremiumsWrittenNet	105035000	USD
CY2011Q4	us-gaap	Prepaid Reinsurance Premiums PrepaidReinsurancePremiums	58522000	USD
CY2012Q3	us-gaap	Prepaid Reinsurance Premiums PrepaidReinsurancePremiums	189592000	USD
	us-gaap	Proceeds From Contributions From Affiliates ProceedsFromContributionsFromAffiliates	0	USD
	us-gaap	Proceeds From Contributions From Affiliates ProceedsFromContributionsFromAffiliates	0	USD
	us-gaap	Proceeds From Divestiture Of Businesses And Interests In Affiliates ProceedsFromDivestitureOfBusinessesAndInterestsInAffiliates	269520000	USD
	us-gaap	Proceeds From Divestiture Of Businesses And Interests In Affiliates ProceedsFromDivestitureOfBusinessesAndInterestsInAffiliates	0	USD
CY2011Q1	us-gaap	Proceeds From Divestiture Of Businesses And Interests In Affiliates ProceedsFromDivestitureOfBusinessesAndInterestsInAffiliates	269500000	USD
	us-gaap	Proceeds From Payments For Trading Securities ProceedsFromPaymentsForTradingSecurities	-47996000	USD
	us-gaap	Proceeds From Payments For Trading Securities ProceedsFromPaymentsForTradingSecurities	0	USD
	us-gaap	Proceeds From Repayments Of Debt ProceedsFromRepaymentsOfDebt	4907000	USD
	us-gaap	Proceeds From Repayments Of Debt ProceedsFromRepaymentsOfDebt	-200000000	USD
	us-gaap	Proceeds From Sale And Maturity Of Available For Sale Securities ProceedsFromSaleAndMaturityOfAvailableForSaleSecurities	47925000	USD
	us-gaap	Proceeds From Sale And Maturity Of Available For Sale Securities ProceedsFromSaleAndMaturityOfAvailableForSaleSecurities	97302000	USD
	us-gaap	Proceeds From Sale And Maturity Of Trading Securities Heldforinvestment ProceedsFromSaleAndMaturityOfTradingSecuritiesHeldforinvestment	4771628000	USD
	us-gaap	Proceeds From Sale And Maturity Of Trading Securities Heldforinvestment ProceedsFromSaleAndMaturityOfTradingSecuritiesHeldforinvestment	6287723000	USD
CY2011Q3	us-gaap	Profit Loss ProfitLoss	63057000	USD
	us-gaap	Profit Loss ProfitLoss	688957000	USD
CY2012Q3	us-gaap	Profit Loss ProfitLoss	240493000	USD
	us-gaap	Profit Loss ProfitLoss	-206301000	USD
CY2012Q3	us-gaap	Receivables From Brokers Dealers And Clearing Organizations ReceivablesFromBrokersDealersAndClearingOrganizations	344367000	USD
CY2011Q4	us-gaap	Receivables From Brokers Dealers And Clearing Organizations ReceivablesFromBrokersDealersAndClearingOrganizations	117117000	USD
CY2012Q3	us-gaap	Redeemable Noncontrolling Interest Equity Carrying Amount RedeemableNoncontrollingInterestEquityCarryingAmount	950822000	USD
CY2011Q4	us-gaap	Redeemable Noncontrolling Interest Equity Carrying Amount RedeemableNoncontrollingInterestEquityCarryingAmount	657727000	USD
	us-gaap	Reinsurance Costs And Recoveries Net ReinsuranceCostsAndRecoveriesNet	30254000	USD
	us-gaap	Reinsurance Costs And Recoveries Net ReinsuranceCostsAndRecoveriesNet	350029000	USD
CY2011Q3	us-gaap	Reinsurance Costs And Recoveries Net ReinsuranceCostsAndRecoveriesNet	101834000	USD
CY2012Q3	us-gaap	Reinsurance Costs And Recoveries Net ReinsuranceCostsAndRecoveriesNet	9974000	USD
CY2011Q4	us-gaap	Reinsurance Payable ReinsurancePayable	256883000	USD
CY2012Q3	us-gaap	Reinsurance Payable ReinsurancePayable	356136000	USD
CY2011Q4	us-gaap	Reinsurance Recoverables ReinsuranceRecoverables	404029000	USD
CY2012Q3	us-gaap	Reinsurance Recoverables ReinsuranceRecoverables	209490000	USD
CY2011Q4	us-gaap	Retained Earnings Accumulated Deficit RetainedEarningsAccumulatedDeficit	2991890000	USD
CY2012Q3	us-gaap	Retained Earnings Accumulated Deficit RetainedEarningsAccumulatedDeficit	3226661000	USD
CY2012Q3	us-gaap	Revenues Revenues	390475000	USD
	us-gaap	Revenues Revenues	1057504000	USD
	us-gaap	Revenues Revenues	886529000	USD
CY2011Q3	us-gaap	Revenues Revenues	217947000	USD
CY2011Q4	us-gaap	Stockholders Equity StockholdersEquity	3605193000	USD
CY2012Q3	us-gaap	Stockholders Equity StockholdersEquity	3838956000	USD
CY2012Q3	us-gaap	Stockholders Equity Including Portion Attributable To Noncontrolling Interest StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest	3842935000	USD
CY2011Q4	us-gaap	Stockholders Equity Including Portion Attributable To Noncontrolling Interest StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest	3608533000	USD
CY2011Q3	us-gaap	Stockholders Equity Including Portion Attributable To Noncontrolling Interest StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest	3551041000	USD
CY2011Q4	us-gaap	Trading Securities Cost TradingSecuritiesCost	4265929000	USD
CY2012Q3	us-gaap	Trading Securities Cost TradingSecuritiesCost	4971116000	USD
CY2011Q4	us-gaap	Trading Securities Debt TradingSecuritiesDebt	4291465000	USD
CY2012Q3	us-gaap	Trading Securities Debt TradingSecuritiesDebt	5089540000	USD
CY2011Q4	us-gaap	Trading Securities Equity TradingSecuritiesEquity	50560000	USD
CY2012Q3	us-gaap	Trading Securities Equity TradingSecuritiesEquity	57617000	USD
CY2012Q3	us-gaap	Undistributed Earnings UndistributedEarnings	177873000	USD
CY2011Q3	us-gaap	Undistributed Earnings UndistributedEarnings	48352000	USD
	us-gaap	Undistributed Earnings UndistributedEarnings	515964000	USD
	us-gaap	Undistributed Earnings UndistributedEarnings	-174767000	USD
CY2011Q3	us-gaap	Undistributed Earnings Allocated To Participating Securities UndistributedEarningsAllocatedToParticipatingSecurities	911000	USD
CY2012Q3	us-gaap	Undistributed Earnings Allocated To Participating Securities UndistributedEarningsAllocatedToParticipatingSecurities	2787000	USD
	us-gaap	Undistributed Earnings Allocated To Participating Securities UndistributedEarningsAllocatedToParticipatingSecurities	8395000	USD
	us-gaap	Undistributed Earnings Allocated To Participating Securities UndistributedEarningsAllocatedToParticipatingSecurities	761000	USD
CY2012Q3	us-gaap	Unearned Premiums UnearnedPremiums	718261000	USD
CY2011Q4	us-gaap	Unearned Premiums UnearnedPremiums	347655000	USD
	us-gaap	Unrealized Gain Loss On Investments UnrealizedGainLossOnInvestments	16018000	USD
	us-gaap	Unrealized Gain Loss On Investments UnrealizedGainLossOnInvestments	35115000	USD
	us-gaap	Unrealized Gain Loss On Securities UnrealizedGainLossOnSecurities	-1542000	USD
	us-gaap	Unrealized Gain Loss On Securities UnrealizedGainLossOnSecurities	-10713000	USD
	us-gaap	Use Of Estimates UseOfEstimates	<div style="font-family:Times New Roman;font-size:10pt;"><div style="line-height:120%;padding-top:8px;font-size:10pt;"><font style="font-family:Arial;font-size:10pt;">The preparation of financial statements in conformity with GAAP requires management to make estimates and assumptions that affect the reported and disclosed amounts of assets and liabilities and disclosure of contingent assets and liabilities at the date of the financial statements and the reported amounts of revenues and expenses during the reporting period. Actual results could differ materially from those estimates. The major estimates reflected in the Company’s consolidated financial statements include, but are not limited to, the reserve for claims and claim expenses, reinsurance recoverables, including allowances for reinsurance recoverables deemed uncollectible, estimates of written and earned premiums, fair value, including the fair value of investments, financial instruments and derivatives, impairment charges and the Company’s deferred tax valuation allowance.</font></div></div>
CY2012Q3	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	49119000	shares
CY2011Q3	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	50973000	shares
	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	50830000	shares
	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	50370000	shares
CY2012Q3	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	48394000	shares
CY2011Q3	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	50501000	shares
	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	50830000	shares
	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	49683000	shares
	rnr	Assumed Premiums Earned AssumedPremiumsEarned	1072659000	USD
	rnr	Assumed Premiums Earned AssumedPremiumsEarned	1043311000	USD
CY2011Q3	rnr	Assumed Premiums Earned AssumedPremiumsEarned	342019000	USD
CY2012Q3	rnr	Assumed Premiums Earned AssumedPremiumsEarned	373753000	USD
CY2012Q3	rnr	Available For Sale Securities Continuous Unrealized Loss Position AvailableForSaleSecuritiesContinuousUnrealizedLossPosition	33	securities
CY2012Q3	rnr	Available For Sale Securities Continuous Unrealized Loss Position Twelve Months Or Longer AvailableForSaleSecuritiesContinuousUnrealizedLossPositionTwelveMonthsOrLonger	15	securities
CY2011Q3	rnr	Available For Sale Securities Net Realized Gain Loss Excluding Other Than Temporary Impairments AvailableForSaleSecuritiesNetRealizedGainLossExcludingOtherThanTemporaryImpairments	3019000	USD
CY2012Q3	rnr	Available For Sale Securities Net Realized Gain Loss Excluding Other Than Temporary Impairments AvailableForSaleSecuritiesNetRealizedGainLossExcludingOtherThanTemporaryImpairments	757000	USD
	rnr	Available For Sale Securities Net Realized Gain Loss Excluding Other Than Temporary Impairments AvailableForSaleSecuritiesNetRealizedGainLossExcludingOtherThanTemporaryImpairments	2806000	USD
	rnr	Available For Sale Securities Net Realized Gain Loss Excluding Other Than Temporary Impairments AvailableForSaleSecuritiesNetRealizedGainLossExcludingOtherThanTemporaryImpairments	5713000	USD
	rnr	Ceded Premiums Earned CededPremiumsEarned	303148000	USD
	rnr	Ceded Premiums Earned CededPremiumsEarned	311536000	USD
CY2011Q3	rnr	Ceded Premiums Earned CededPremiumsEarned	118057000	USD
CY2012Q3	rnr	Ceded Premiums Earned CededPremiumsEarned	119974000	USD
CY2011Q3	rnr	Change In Unearned Premium Net ChangeInUnearnedPremiumNet	126214000	USD
CY2012Q3	rnr	Change In Unearned Premium Net ChangeInUnearnedPremiumNet	157588000	USD
	rnr	Change In Unearned Premium Net ChangeInUnearnedPremiumNet	-231640000	USD
	rnr	Change In Unearned Premium Net ChangeInUnearnedPremiumNet	-239536000	USD
CY2012Q3	rnr	Combined Ratio CombinedRatio	0.533
	rnr	Combined Ratio CombinedRatio	0.431
CY2011Q3	rnr	Combined Ratio CombinedRatio	0.637
	rnr	Combined Ratio CombinedRatio	1.405
	rnr	Contributions To Subsidiaries ContributionsToSubsidiaries	0	USD
	rnr	Contributions To Subsidiaries ContributionsToSubsidiaries	0	USD
	rnr	Direct Premiums Earned DirectPremiumsEarned	24581000	USD
	rnr	Direct Premiums Earned DirectPremiumsEarned	11777000	USD
CY2012Q3	rnr	Direct Premiums Earned DirectPremiumsEarned	8844000	USD
CY2011Q3	rnr	Direct Premiums Earned DirectPremiumsEarned	5262000	USD
	rnr	Due To From Subsidiary DueToFromSubsidiary	0	USD
	rnr	Due To From Subsidiary DueToFromSubsidiary	0	USD
CY2011Q3	rnr	Equity In Net Income Loss Of Subsidiaries EquityInNetIncomeLossOfSubsidiaries	0	USD
	rnr	Net Other Than Temporary Impairments Including Discontinued Operations NetOtherThanTemporaryImpairmentsIncludingDiscontinuedOperations	449000	USD
CY2012Q3	rnr	Equity In Net Income Loss Of Subsidiaries EquityInNetIncomeLossOfSubsidiaries	0	USD
	rnr	Equity In Net Income Loss Of Subsidiaries EquityInNetIncomeLossOfSubsidiaries	0	USD
	rnr	Equity In Net Income Loss Of Subsidiaries EquityInNetIncomeLossOfSubsidiaries	0	USD
CY2011Q3	rnr	Fair Value Assets And Liabilities Measured On Recurring Basis Foreign Exchange Gains Losses FairValueAssetsAndLiabilitiesMeasuredOnRecurringBasisForeignExchangeGainsLosses	-2566000	USD
CY2012Q3	rnr	Fair Value Assets And Liabilities Measured On Recurring Basis Foreign Exchange Gains Losses FairValueAssetsAndLiabilitiesMeasuredOnRecurringBasisForeignExchangeGainsLosses	843000	USD
	rnr	Fair Value Assets And Liabilities Measured On Recurring Basis Foreign Exchange Gains Losses FairValueAssetsAndLiabilitiesMeasuredOnRecurringBasisForeignExchangeGainsLosses	173000	USD
	rnr	Fair Value Assets And Liabilities Measured On Recurring Basis Foreign Exchange Gains Losses FairValueAssetsAndLiabilitiesMeasuredOnRecurringBasisForeignExchangeGainsLosses	-786000	USD
CY2011Q3	rnr	Fair Value Assets Measured On Recurring Basis Change In Unrealized Gain Loss During Period Included In Investment Income FairValueAssetsMeasuredOnRecurringBasisChangeInUnrealizedGainLossDuringPeriodIncludedInInvestmentIncome	-25612000	USD
CY2012Q3	rnr	Fair Value Assets Measured On Recurring Basis Change In Unrealized Gain Loss During Period Included In Investment Income FairValueAssetsMeasuredOnRecurringBasisChangeInUnrealizedGainLossDuringPeriodIncludedInInvestmentIncome	7939000	USD
	rnr	Fair Value Assets Measured On Recurring Basis Change In Unrealized Gain Loss During Period Included In Investment Income FairValueAssetsMeasuredOnRecurringBasisChangeInUnrealizedGainLossDuringPeriodIncludedInInvestmentIncome	24047000	USD
	rnr	Fair Value Assets Measured On Recurring Basis Change In Unrealized Gain Loss During Period Included In Investment Income FairValueAssetsMeasuredOnRecurringBasisChangeInUnrealizedGainLossDuringPeriodIncludedInInvestmentIncome	3759000	USD
CY2011Q3	rnr	Fair Value Assets Measured On Recurring Basis Change In Unrealized Gain Loss During Period Included In Other Income FairValueAssetsMeasuredOnRecurringBasisChangeInUnrealizedGainLossDuringPeriodIncludedInOtherIncome	-46116000	USD
CY2012Q3	rnr	Fair Value Assets Measured On Recurring Basis Change In Unrealized Gain Loss During Period Included In Other Income FairValueAssetsMeasuredOnRecurringBasisChangeInUnrealizedGainLossDuringPeriodIncludedInOtherIncome	-13700000	USD
	rnr	Fair Value Assets Measured On Recurring Basis Change In Unrealized Gain Loss During Period Included In Other Income FairValueAssetsMeasuredOnRecurringBasisChangeInUnrealizedGainLossDuringPeriodIncludedInOtherIncome	-10713000	USD
	rnr	Fair Value Assets Measured On Recurring Basis Change In Unrealized Gain Loss During Period Included In Other Income FairValueAssetsMeasuredOnRecurringBasisChangeInUnrealizedGainLossDuringPeriodIncludedInOtherIncome	-4517000	USD
CY2011Q3	rnr	Fair Value Assets Measured On Recurring Basis Realized Gain Loss During Period Included In Investment Income FairValueAssetsMeasuredOnRecurringBasisRealizedGainLossDuringPeriodIncludedInInvestmentIncome	0	USD
CY2012Q3	rnr	Fair Value Assets Measured On Recurring Basis Realized Gain Loss During Period Included In Investment Income FairValueAssetsMeasuredOnRecurringBasisRealizedGainLossDuringPeriodIncludedInInvestmentIncome	0	USD
	rnr	Fair Value Assets Measured On Recurring Basis Realized Gain Loss During Period Included In Investment Income FairValueAssetsMeasuredOnRecurringBasisRealizedGainLossDuringPeriodIncludedInInvestmentIncome	0	USD
	rnr	Fair Value Assets Measured On Recurring Basis Realized Gain Loss During Period Included In Investment Income FairValueAssetsMeasuredOnRecurringBasisRealizedGainLossDuringPeriodIncludedInInvestmentIncome	0	USD
CY2011Q3	rnr	Fair Value Assets Measured On Recurring Basis Realized Gain Loss During Period Included In Other Income FairValueAssetsMeasuredOnRecurringBasisRealizedGainLossDuringPeriodIncludedInOtherIncome	48393000	USD
CY2012Q3	rnr	Fair Value Assets Measured On Recurring Basis Realized Gain Loss During Period Included In Other Income FairValueAssetsMeasuredOnRecurringBasisRealizedGainLossDuringPeriodIncludedInOtherIncome	994000	USD
	rnr	Fair Value Assets Measured On Recurring Basis Realized Gain Loss During Period Included In Other Income FairValueAssetsMeasuredOnRecurringBasisRealizedGainLossDuringPeriodIncludedInOtherIncome	-32238000	USD
	rnr	Fair Value Assets Measured On Recurring Basis Realized Gain Loss During Period Included In Other Income FairValueAssetsMeasuredOnRecurringBasisRealizedGainLossDuringPeriodIncludedInOtherIncome	61215000	USD
CY2011Q3	rnr	Gross Premiums Written Direct And Assumed GrossPremiumsWrittenDirectAndAssumed	139938000	USD
CY2012Q3	rnr	Gross Premiums Written Direct And Assumed GrossPremiumsWrittenDirectAndAssumed	136359000	USD
	rnr	Gross Premiums Written Direct And Assumed GrossPremiumsWrittenDirectAndAssumed	1467846000	USD
	rnr	Gross Premiums Written Direct And Assumed GrossPremiumsWrittenDirectAndAssumed	1392006000	USD
CY2012Q3	rnr	Intangible Assets Net Including Goodwill IntangibleAssetsNetIncludingGoodwill	8588000	USD
CY2011Q4	rnr	Intangible Assets Net Including Goodwill IntangibleAssetsNetIncludingGoodwill	8894000	USD
	rnr	Investment Income Before Investment Expenses InvestmentIncomeBeforeInvestmentExpenses	73567000	USD
	rnr	Investment Income Before Investment Expenses InvestmentIncomeBeforeInvestmentExpenses	135507000	USD
CY2011Q3	rnr	Investment Income Before Investment Expenses InvestmentIncomeBeforeInvestmentExpenses	-25414000	USD
CY2012Q3	rnr	Investment Income Before Investment Expenses InvestmentIncomeBeforeInvestmentExpenses	48368000	USD
CY2012Q3	rnr	Net Claims And Claim Expense Ratio Calendar Year NetClaimsAndClaimExpenseRatioCalendarYear	0.279
	rnr	Net Claims And Claim Expense Ratio Calendar Year NetClaimsAndClaimExpenseRatioCalendarYear	0.176
CY2011Q3	rnr	Net Claims And Claim Expense Ratio Calendar Year NetClaimsAndClaimExpenseRatioCalendarYear	0.340
	rnr	Net Claims And Claim Expense Ratio Calendar Year NetClaimsAndClaimExpenseRatioCalendarYear	1.141
CY2012Q3	rnr	Net Claims And Claim Expense Ratio Prior Years NetClaimsAndClaimExpenseRatioPriorYears	-0.077
	rnr	Net Claims And Claim Expense Ratio Prior Years NetClaimsAndClaimExpenseRatioPriorYears	-0.155
CY2011Q3	rnr	Net Claims And Claim Expense Ratio Prior Years NetClaimsAndClaimExpenseRatioPriorYears	-0.037
	rnr	Net Claims And Claim Expense Ratio Prior Years NetClaimsAndClaimExpenseRatioPriorYears	-0.129
CY2012Q3	rnr	Net Claims And Claims Expense Ratio Current Year NetClaimsAndClaimsExpenseRatioCurrentYear	0.356
	rnr	Net Claims And Claims Expense Ratio Current Year NetClaimsAndClaimsExpenseRatioCurrentYear	0.331
CY2011Q3	rnr	Net Claims And Claims Expense Ratio Current Year NetClaimsAndClaimsExpenseRatioCurrentYear	0.377
	rnr	Net Claims And Claims Expense Ratio Current Year NetClaimsAndClaimsExpenseRatioCurrentYear	1.270
	rnr	Net Other Than Temporary Impairments Including Discontinued Operations NetOtherThanTemporaryImpairmentsIncludingDiscontinuedOperations	343000	USD
	rnr	Number Of Reportable Segments NumberOfReportableSegments	3	segments
CY2012Q3	rnr	Other Assets Including Goodwill And Other Intangible Assets And Receivables For Investment Sold OtherAssetsIncludingGoodwillAndOtherIntangibleAssetsAndReceivablesForInvestmentSold	567963000	USD
CY2011Q4	rnr	Other Assets Including Goodwill And Other Intangible Assets And Receivables For Investment Sold OtherAssetsIncludingGoodwillAndOtherIntangibleAssetsAndReceivablesForInvestmentSold	307003000	USD
CY2012Q3	rnr	Other Comprehensive Income Loss Adjustment For Realized And Unrealized Investment Gains Losses And Net Other Than Temporary Impairments Portion Attributable To Parent Available For Sale Securities OtherComprehensiveIncomeLossAdjustmentForRealizedAndUnrealizedInvestmentGainsLossesAndNetOtherThanTemporaryImpairmentsPortionAttributableToParentAvailableForSaleSecurities	2293000	USD
CY2011Q3	rnr	Other Comprehensive Income Loss Adjustment For Realized And Unrealized Investment Gains Losses And Net Other Than Temporary Impairments Portion Attributable To Parent Available For Sale Securities OtherComprehensiveIncomeLossAdjustmentForRealizedAndUnrealizedInvestmentGainsLossesAndNetOtherThanTemporaryImpairmentsPortionAttributableToParentAvailableForSaleSecurities	-4320000	USD
	rnr	Other Comprehensive Income Loss Adjustment For Realized And Unrealized Investment Gains Losses And Net Other Than Temporary Impairments Portion Attributable To Parent Available For Sale Securities OtherComprehensiveIncomeLossAdjustmentForRealizedAndUnrealizedInvestmentGainsLossesAndNetOtherThanTemporaryImpairmentsPortionAttributableToParentAvailableForSaleSecurities	-3418000	USD
	rnr	Other Comprehensive Income Loss Adjustment For Realized And Unrealized Investment Gains Losses And Net Other Than Temporary Impairments Portion Attributable To Parent Available For Sale Securities OtherComprehensiveIncomeLossAdjustmentForRealizedAndUnrealizedInvestmentGainsLossesAndNetOtherThanTemporaryImpairmentsPortionAttributableToParentAvailableForSaleSecurities	4822000	USD
CY2012Q3	rnr	Other Liabilities And Payables For Investments Purchased OtherLiabilitiesAndPayablesForInvestmentsPurchased	782761000	USD
CY2011Q4	rnr	Other Liabilities And Payables For Investments Purchased OtherLiabilitiesAndPayablesForInvestmentsPurchased	514633000	USD
	rnr	Other Than Temporary Impairment Losses Investments Portion Recognized In Earnings Net Available For Sale Securities Including Discontinued Operations OtherThanTemporaryImpairmentLossesInvestmentsPortionRecognizedInEarningsNetAvailableForSaleSecuritiesIncludingDiscontinuedOperations	449000	USD
CY2011Q3	rnr	Other Than Temporary Impairment Losses Investments Portion Recognized In Earnings Net Available For Sale Securities Including Discontinued Operations OtherThanTemporaryImpairmentLossesInvestmentsPortionRecognizedInEarningsNetAvailableForSaleSecuritiesIncludingDiscontinuedOperations	449000	USD
	rnr	Other Than Temporary Impairment Losses Investments Portion Recognized In Earnings Net Available For Sale Securities Including Discontinued Operations OtherThanTemporaryImpairmentLossesInvestmentsPortionRecognizedInEarningsNetAvailableForSaleSecuritiesIncludingDiscontinuedOperations	343000	USD
CY2012Q3	rnr	Other Than Temporary Impairment Losses Investments Portion Recognized In Earnings Net Available For Sale Securities Including Discontinued Operations OtherThanTemporaryImpairmentLossesInvestmentsPortionRecognizedInEarningsNetAvailableForSaleSecuritiesIncludingDiscontinuedOperations	0	USD
	rnr	Payments For Proceeds From Other Investments PaymentsForProceedsFromOtherInvestments	-41262000	USD
	rnr	Payments For Proceeds From Other Investments PaymentsForProceedsFromOtherInvestments	-26878000	USD
	rnr	Payments For Proceeds From Other Short Term Investments PaymentsForProceedsFromOtherShortTermInvestments	535055000	USD
	rnr	Payments For Proceeds From Other Short Term Investments PaymentsForProceedsFromOtherShortTermInvestments	-170162000	USD
CY2012Q3	rnr	Preferred Stock Amount Of Preferred Dividends In Arrears Equivalent Number Of Periods Trigger PreferredStockAmountOfPreferredDividendsInArrearsEquivalentNumberOfPeriodsTrigger	6	period
CY2012Q3	rnr	Preferred Stock Preferred Stock Dividends In Arrears Triggered Shareholder Election Right Number Of Directors PreferredStockPreferredStockDividendsInArrearsTriggeredShareholderElectionRightNumberOfDirectors	2	director
CY2012Q3	rnr	Securities Debt SecuritiesDebt	5184366000	USD
CY2012Q3	rnr	Securities Debt Amortized Cost Basis SecuritiesDebtAmortizedCostBasis	5053161000	USD
CY2012Q3	rnr	Securities Debt Maturities After Five Through Ten Years Amortized Cost Basis SecuritiesDebtMaturitiesAfterFiveThroughTenYearsAmortizedCostBasis	635057000	USD
CY2012Q3	rnr	Securities Debt Maturities After Five Through Ten Years Fair Value SecuritiesDebtMaturitiesAfterFiveThroughTenYearsFairValue	671408000	USD
CY2012Q3	rnr	Securities Debt Maturities After One Through Five Years Amortized Cost Basis SecuritiesDebtMaturitiesAfterOneThroughFiveYearsAmortizedCostBasis	2603291000	USD
CY2012Q3	rnr	Securities Debt Maturities After One Through Five Years Fair Value SecuritiesDebtMaturitiesAfterOneThroughFiveYearsFairValue	2633322000	USD
CY2012Q3	rnr	Securities Debt Maturities After Ten Years Amortized Cost Basis SecuritiesDebtMaturitiesAfterTenYearsAmortizedCostBasis	128134000	USD
CY2012Q3	rnr	Securities Debt Maturities After Ten Years Fair Value SecuritiesDebtMaturitiesAfterTenYearsFairValue	143351000	USD
CY2012Q3	rnr	Securities Debt Maturities Within One Year Amortized Cost Basis SecuritiesDebtMaturitiesWithinOneYearAmortizedCostBasis	417353000	USD
CY2012Q3	rnr	Securities Debt Maturities Within One Year Fair Value SecuritiesDebtMaturitiesWithinOneYearFairValue	417722000	USD
CY2012Q3	rnr	Total Assets And Liabilities Measured At Fair Value On Recurring Basis TotalAssetsAndLiabilitiesMeasuredAtFairValueOnRecurringBasis	6715118000	USD
CY2011Q4	rnr	Total Assets And Liabilities Measured At Fair Value On Recurring Basis TotalAssetsAndLiabilitiesMeasuredAtFairValueOnRecurringBasis	6154609000	USD
CY2012Q3	rnr	Total Other Assets And Liabilities Measured On Recurring Basis TotalOtherAssetsAndLiabilitiesMeasuredOnRecurringBasis	41779000	USD
CY2011Q4	rnr	Total Other Assets And Liabilities Measured On Recurring Basis TotalOtherAssetsAndLiabilitiesMeasuredOnRecurringBasis	16071000	USD
CY2012Q3	rnr	Trading Debt Securities Amortized Cost Basis TradingDebtSecuritiesAmortizedCostBasis	4971116000	USD
CY2012Q3	rnr	Trading Securities Debt Maturities After Five Through Ten Years Amortized Cost Basis TradingSecuritiesDebtMaturitiesAfterFiveThroughTenYearsAmortizedCostBasis	630006000	USD
CY2012Q3	rnr	Trading Securities Debt Maturities After Five Through Ten Years Fair Value TradingSecuritiesDebtMaturitiesAfterFiveThroughTenYearsFairValue	665788000	USD
CY2012Q3	rnr	Trading Securities Debt Maturities After One Through Five Years Amortized Cost Basis TradingSecuritiesDebtMaturitiesAfterOneThroughFiveYearsAmortizedCostBasis	2600399000	USD
CY2012Q3	rnr	Trading Securities Debt Maturities After One Through Five Years Fair Value TradingSecuritiesDebtMaturitiesAfterOneThroughFiveYearsFairValue	2630258000	USD
CY2012Q3	rnr	Trading Securities Debt Maturities After Ten Years Amortized Cost Basis TradingSecuritiesDebtMaturitiesAfterTenYearsAmortizedCostBasis	126717000	USD
CY2012Q3	rnr	Trading Securities Debt Maturities After Ten Years Fair Value TradingSecuritiesDebtMaturitiesAfterTenYearsFairValue	141741000	USD
CY2012Q3	rnr	Trading Securities Debt Maturities Within One Year Amortized Cost Basis TradingSecuritiesDebtMaturitiesWithinOneYearAmortizedCostBasis	417241000	USD
CY2012Q3	rnr	Trading Securities Debt Maturities Within One Year Fair Value TradingSecuritiesDebtMaturitiesWithinOneYearFairValue	417618000	USD
CY2012Q3	rnr	Underwriting Expense Ratio UnderwritingExpenseRatio	0.254
	rnr	Underwriting Expense Ratio UnderwritingExpenseRatio	0.255
CY2011Q3	rnr	Underwriting Expense Ratio UnderwritingExpenseRatio	0.297
	rnr	Underwriting Expense Ratio UnderwritingExpenseRatio	0.264
CY2012Q3	rnr	Underwriting Income Loss1 UnderwritingIncomeLoss1	122580000	USD
	rnr	Underwriting Income Loss1 UnderwritingIncomeLoss1	447049000	USD
CY2011Q3	rnr	Underwriting Income Loss1 UnderwritingIncomeLoss1	83168000	USD
	rnr	Underwriting Income Loss1 UnderwritingIncomeLoss1	-304261000	USD
	rnr	Value At Risk Confidence Level ValueAtRiskConfidenceLevel	0.99
	rnr	Value At Risk Confidence Level Exception ValueAtRiskConfidenceLevelException	0.01
	dei	Amendment Flag AmendmentFlag	false
	dei	Current Fiscal Year End Date CurrentFiscalYearEndDate	--12-31
	dei	Document Fiscal Period Focus DocumentFiscalPeriodFocus	Q3
	dei	Document Fiscal Year Focus DocumentFiscalYearFocus	2012
	dei	Document Period End Date DocumentPeriodEndDate	2012-09-30
	dei	Document Type DocumentType	10-Q
	dei	Entity Central Index Key EntityCentralIndexKey	0000913144
CY2012Q4	dei	Entity Common Stock Shares Outstanding EntityCommonStockSharesOutstanding	48156329	shares
	dei	Entity Filer Category EntityFilerCategory	Large Accelerated Filer
	dei	Entity Registrant Name EntityRegistrantName	RENAISSANCERE HOLDINGS LTD.
	dei	Trading Symbol TradingSymbol	RNR

Files In Submission

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0001445305-12-003375-index.html	Edgar Link	pending
0001445305-12-003375.txt	Edgar Link	pending
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$RNR
RENAISSANCERE HOLDINGS LTD Stock $rnr

2012 Q3 Form 10-Q Financial Statement

#000144530512003375 Filed on November 02, 2012

Income Statement

Balance Sheet

Cashflow Statement

Facts In Submission

Files In Submission

$RNR RENAISSANCERE HOLDINGS LTD Stock $rnr

2012 Q3 Form 10-Q Financial Statement

#000144530512003375 Filed on November 02, 2012

Income Statement

Balance Sheet

Cashflow Statement

Facts In Submission

Files In Submission

$RNR
RENAISSANCERE HOLDINGS LTD Stock $rnr