v2.4.0.6

Segment Reporting (Schedule Of Significant Components Of The Company's Revenues And Expenses) (Details) (USD $) | 3 Months Ended
--- | ---
Mar. 31, 2012 | Mar. 31, 2011
Gross premiums written | $ 664,151,000 |  | $ 610,505,000 |
Net premiums written | 492,575,000 |  | 452,575,000 |
Net premiums earned | 278,665,000 |  | 305,541,000 |
Net claims and claim expenses incurred | 15,552,000 |  | 628,537,000 |
Acquisition expenses | 24,111,000 |  | 32,335,000 |
Operational expenses | 42,383,000 |  | 41,830,000 |
Underwriting income (loss) | 196,619,000 |  | (397,161,000) |
Net investment income | 66,971,000 |  | 60,281,000 |
Net foreign exchange losses | (1,460,000) |  | 660,000 |
Equity in earnings (losses) of other ventures | 5,470,000 |  | (23,753,000) |
Other (loss) income | (39,094,000) |  | 50,145,000 |
Net realized and unrealized gains on investments | 46,113,000 |  | (5,214,000) |
Net other-than-temporary impairments | (134,000) |  | 0 |
Corporate expenses | (4,811,000) |  | (2,064,000) |
Interest expense | (5,718,000) |  | (6,195,000) |
Income (loss) from continuing operations before taxes | 263,956,000 |  | (323,301,000) |
Income tax benefit (expense) | 37,000 |  | 52,000 |
Net (loss) income from discontinued operations | (173,000) |  | (1,526,000) |
Net loss attributable to noncontrolling interests | (53,641,000) |  | 85,492,000 |
Dividends on preference shares | (8,750,000) |  | (8,750,000) |
Net income (loss) available (attributable) to RenaissanceRe common shareholders | 201,429,000 |  | (248,033,000) |
Net claims and claim expenses incurred - current accident year | 71,424,000 |  | 696,697,000 |
Net claims and claim expenses incurred - prior accident years | (55,872,000) |  | (68,160,000) |
Net claims and claim expenses incurred | 15,552,000 |  | 628,537,000 |
Net claims and claim expense ratio - current accident year | 25.60% |  | 228.00% |
Net claims and claim expense ratio - prior accident years | (20.00%) |  | (22.30%) |
Net claims and claim expense ratio - calendar year | 5.60% |  | 205.70% |
Underwriting expense ratio | 23.80% |  | 24.30% |
Combined ratio | 29.40% |  | 230.00% |
Reinsurance [Member] |  |  |  |
Gross premiums written | 609,762,000 |  | 573,682,000 |
Net premiums written | 458,638,000 |  | 423,566,000 |
Net premiums earned | 253,818,000 |  | 289,429,000 |
Net claims and claim expenses incurred | 8,324,000 |  | 595,404,000 |
Acquisition expenses | 19,386,000 |  | 29,792,000 |
Operational expenses | 32,044,000 |  | 32,363,000 |
Underwriting income (loss) | 194,064,000 |  | (368,130,000) |
Net claims and claim expenses incurred - current accident year | 55,144,000 |  | 667,362,000 |
Net claims and claim expenses incurred - prior accident years | (46,820,000) |  | (71,958,000) |
Net claims and claim expenses incurred | 8,324,000 |  | 595,404,000 |
Net claims and claim expense ratio - current accident year | 21.70% |  | 230.60% |
Net claims and claim expense ratio - prior accident years | (18.40%) |  | (24.90%) |
Net claims and claim expense ratio - calendar year | 3.30% |  | 205.70% |
Underwriting expense ratio | 20.20% |  | 21.50% |
Combined ratio | 23.50% |  | 227.20% |
Lloyd's [Member] |  |  |  |
Gross premiums written | 54,817,000 |  | 36,620,000 |
Net premiums written | 33,937,000 |  | 28,737,000 |
Net premiums earned | 24,822,000 |  | 15,674,000 |
Net claims and claim expenses incurred | 9,001,000 |  | 30,523,000 |
Acquisition expenses | 4,668,000 |  | 2,461,000 |
Operational expenses | 10,057,000 |  | 8,972,000 |
Underwriting income (loss) | 1,096,000 |  | (26,282,000) |
Net claims and claim expenses incurred - current accident year | 16,280,000 |  | 29,326,000 |
Net claims and claim expenses incurred - prior accident years | (7,279,000) |  | 1,197,000 |
Net claims and claim expenses incurred | 9,001,000 |  | 30,523,000 |
Net claims and claim expense ratio - current accident year | 65.60% |  | 187.10% |
Net claims and claim expense ratio - prior accident years | (29.30%) |  | 7.60% |
Net claims and claim expense ratio - calendar year | 36.30% |  | 194.70% |
Underwriting expense ratio | 59.30% |  | 73.00% |
Combined ratio | 95.60% |  | 267.70% |
Insurance [Member] |  |  |  |
Gross premiums written | 0 |  | 280,000 |
Net premiums written | 0 |  | 272,000 |
Net premiums earned | 25,000 |  | 438,000 |
Net claims and claim expenses incurred | (1,773,000) |  | 2,610,000 |
Acquisition expenses | 57,000 |  | 82,000 |
Operational expenses | 282,000 |  | 495,000 |
Underwriting income (loss) | 1,459,000 |  | (2,749,000) |
Net claims and claim expenses incurred - current accident year | 0 |  | 9,000 |
Net claims and claim expenses incurred - prior accident years | (1,773,000) |  | 2,601,000 |
Net claims and claim expenses incurred | (1,773,000) |  | 2,610,000 |
Net claims and claim expense ratio - current accident year | 0.00% |  | 2.10% |
Net claims and claim expense ratio - prior accident years | (7092.00%) |  | 593.80% |
Net claims and claim expense ratio - calendar year | (7092.00%) |  | 595.90% |
Underwriting expense ratio | 1356.00% |  | 131.70% |
Combined ratio | (5736.00%) |  | 727.60% |
Eliminations [Member] |  |  |  |
Gross premiums written | (428,000) | [1] | (77,000) | [2]
All Other Segments [Member] |  |  |  |
Gross premiums written | 0 |  | 0 |
Net premiums written | 0 |  | 0 |
Net premiums earned | 0 |  | 0 |
Net claims and claim expenses incurred | 0 |  | 0 |
Acquisition expenses | 0 |  | 0 |
Operational expenses | 0 |  | 0 |
Underwriting income (loss) | 0 |  | 0 |
Net investment income | 66,971,000 |  | 60,281,000 |
Net foreign exchange losses | (1,460,000) |  | 660,000 |
Equity in earnings (losses) of other ventures | 5,470,000 |  | (23,753,000) |
Other (loss) income | (39,094,000) |  | 50,145,000 |
Net realized and unrealized gains on investments | 46,113,000 |  | (5,214,000) |
Net other-than-temporary impairments | (134,000) |  |  |
Corporate expenses | (4,811,000) |  | (2,064,000) |
Interest expense | (5,718,000) |  | (6,195,000) |
Income tax benefit (expense) | 37,000 |  | 52,000 |
Net (loss) income from discontinued operations | (173,000) |  | (1,526,000) |
Net loss attributable to noncontrolling interests | (53,641,000) |  | 85,492,000 |
Dividends on preference shares | (8,750,000) |  | (8,750,000) |
Net claims and claim expenses incurred | 0 |  | 0 |
Intersegment Elimination, Reinsurance Segment To Lloyds Segment Member |  |  |  |
Gross premiums ceded from segment to segment | $ 400,000 |  | $ 100,000 |
[1] | Represents $0.4 million of gross premiums ceded from the Reinsurance segment to the Lloyd’s segment.
[2] | Represents $0.1 million of gross premiums ceded from the Reinsurance segment to the Lloyd’s segment.

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