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v3.19.1

Segment Reporting (Schedule Of Underwriting Results For Operating Segments) (Details) - USD ($) $ in Thousands | 3 Months Ended
--- | ---
Mar. 31, 2019 | Mar. 31, 2018
Segment Reporting Information [Line Items] |  |
Premiums earned | $ 1,732,697 | $ 1,619,427
Incurred losses and LAE | 1,048,550 | 1,057,177
Commission and brokerage | 389,474 | 357,639
Other underwriting expenses | 98,985 | 96,284
U.S. Reinsurance [Member] |  |
Segment Reporting Information [Line Items] |  |
Gross written premiums | 764,146 | 644,222
Net written premiums | 669,707 | 545,831
Premiums earned | 626,471 | 563,385
Incurred losses and LAE | 320,104 | 545,193
Commission and brokerage | 167,102 | 127,320
Other underwriting expenses | 15,591 | 16,886
Underwriting gain (loss) | 123,674 | (126,014)
International [Member] |  |
Segment Reporting Information [Line Items] |  |
Gross written premiums | 400,054 | 366,724
Net written premiums | 375,505 | 345,155
Premiums earned | 350,935 | 343,604
Incurred losses and LAE | 254,135 | 127,024
Commission and brokerage | 81,425 | 82,177
Other underwriting expenses | 8,681 | 10,576
Underwriting gain (loss) | 6,694 | 123,827
Bermuda [Member] |  |
Segment Reporting Information [Line Items] |  |
Gross written premiums | 367,851 | 415,686
Net written premiums | 349,341 | 394,968
Premiums earned | 330,113 | 319,134
Incurred losses and LAE | 197,959 | 129,513
Commission and brokerage | 74,110 | 81,487
Other underwriting expenses | 11,497 | 10,133
Underwriting gain (loss) | 46,547 | 98,001
Insurance [Member] |  |
Segment Reporting Information [Line Items] |  |
Gross written premiums | 595,057 | 504,975
Net written premiums | 457,145 | 386,252
Premiums earned | 425,178 | 393,304
Incurred losses and LAE | 276,352 | 255,447
Commission and brokerage | 66,837 | 66,655
Other underwriting expenses | 63,216 | 58,689
Underwriting gain (loss) | $ 18,773 | $ 12,513

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- Definition Amount, before premiums ceded to other entities and premiums assumed by the entity, of premiums written. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 944 -SubTopic 605 -Section 50 -Paragraph 1 -Subparagraph (b)(1) -URI http://asc.fasb.org/extlink&oid=6486672&loc=d3e27261-158547 + Details
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- Definition The difference between the price paid by the public and the contract price less the related expenses. A broker-dealer may underwrite a security offering by contracting to buy the issue either at a fixed price or a price based on selling the offering on a best-effort basis. + References No definition available. + Details
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