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v3.19.3.a.u2

Reserve for Claims and Claim Expenses (Prior Year Development of the Reserve for Net Claims and Claim Expenses) (Details) $ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2019 USD ($) | Dec. 31, 2018 USD ($) | Dec. 31, 2017 USD ($)
Liability for Catastrophe Claims [Line Items] |  |  |
Net claims and claim expenses incurred – prior accident years | $ (26,855) | $ (270,749) | $ (40,996)
Other |  |  |
Liability for Catastrophe Claims [Line Items] |  |  |
Net claims and claim expenses incurred – prior accident years | (40) | (197) | (1,583)
Property |  |  |
Liability for Catastrophe Claims [Line Items] |  |  |
Net claims and claim expenses incurred – prior accident years | (2,933) | (221,290) | (45,596)
Property | Actuarial assumption changes |  |  |
Liability for Catastrophe Claims [Line Items] |  |  |
Net claims and claim expenses incurred – prior accident years | 9,245 | (5,682) | 842
Property | Large and small catastrophe events and attritional loss movements |  |  |
Liability for Catastrophe Claims [Line Items] |  |  |
Net claims and claim expenses incurred – prior accident years | (12,178) | (215,608) | (46,438)
Property | Large catastrophe events |  |  |
Liability for Catastrophe Claims [Line Items] |  |  |
Net claims and claim expenses incurred – prior accident years | (17,557) | (182,029) | (7,640)
Property | 2017 Large Loss Events |  |  |
Liability for Catastrophe Claims [Line Items] |  |  |
Net claims and claim expenses incurred – prior accident years | (101,572) | (172,512) |
Property | New Zealand Earthquake (2011) |  |  |
Liability for Catastrophe Claims [Line Items] |  |  |
Net claims and claim expenses incurred – prior accident years | (7,497) |  | 5,807
Property | Tohoku Earthquake and Tsunami (2011) |  |  |
Liability for Catastrophe Claims [Line Items] |  |  |
Net claims and claim expenses incurred – prior accident years | (5,198) |  |
Property | Storm Sandy (2012) |  |  |
Liability for Catastrophe Claims [Line Items] |  |  |
Net claims and claim expenses incurred – prior accident years |  |  | (4,395)
Property | April and May U.S. Tornadoes (2011) |  |  |
Liability for Catastrophe Claims [Line Items] |  |  |
Net claims and claim expenses incurred – prior accident years |  |  | (4,177)
Property | New Zealand Earthquake (2010) |  |  |
Liability for Catastrophe Claims [Line Items] |  |  |
Net claims and claim expenses incurred – prior accident years | 47,071 |  | 4,061
Property | 2018 Large Loss Events |  |  |
Liability for Catastrophe Claims [Line Items] |  |  |
Net claims and claim expenses incurred – prior accident years | 81,555 |  |
Property | Other |  |  |
Liability for Catastrophe Claims [Line Items] |  |  |
Net claims and claim expenses incurred – prior accident years | (31,916) | (9,517) | (8,936)
Property | Small catastrophe events and attritional loss movements |  |  |
Liability for Catastrophe Claims [Line Items] |  |  |
Net claims and claim expenses incurred – prior accident years | 5,379 | (33,579) | (38,798)
Property | Tianjin Explosion (2015) |  |  |
Liability for Catastrophe Claims [Line Items] |  |  |
Net claims and claim expenses incurred – prior accident years |  |  | (8,002)
Property | Fort McMurray Wildfire (2016) |  |  |
Liability for Catastrophe Claims [Line Items] |  |  |
Net claims and claim expenses incurred – prior accident years |  |  | (6,364)
Property | Other small catastrophe events and attritional loss movements |  |  |
Liability for Catastrophe Claims [Line Items] |  |  |
Net claims and claim expenses incurred – prior accident years | 5,379 | (33,579) | (24,432)
Casualty and Specialty |  |  |
Liability for Catastrophe Claims [Line Items] |  |  |
Net claims and claim expenses incurred – prior accident years | (23,882) | (49,262) | 6,183
Casualty and Specialty | Actuarial methods - actual reported claims less than expected claims |  |  |
Liability for Catastrophe Claims [Line Items] |  |  |
Net claims and claim expenses incurred – prior accident years | (52,796) | (41,476) | (24,836)
Casualty and Specialty | Ogden Rate change |  |  |
Liability for Catastrophe Claims [Line Items] |  |  |
Net claims and claim expenses incurred – prior accident years | 0 | 0 | 33,481
Casualty and Specialty | Actuarial assumption changes |  |  |
Liability for Catastrophe Claims [Line Items] |  |  |
Net claims and claim expenses incurred – prior accident years | $ 28,914 | $ (7,786) | $ (2,462)
High | Discount rate | Ogden Rate |  |  |
Liability for Catastrophe Claims [Line Items] |  |  |
Cash surrender value, measurement input |  |  | 0.025
Low | Discount rate | Ogden Rate |  |  |
Liability for Catastrophe Claims [Line Items] |  |  |
Cash surrender value, measurement input |  |  | (0.0075)

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