XML 113 R10.htm IDEA: XBRL DOCUMENT
v3.3.0.814

Loss and Loss Adjustment Expense Reserves | 9 Months Ended
--- | ---
Sep. 30, 2015
Insurance Loss Reserves [Abstract] |
Loss and Loss Adjustment Expense Reserves | Loss and Loss Adjustment Expense Reserves The following table summarizes the loss and loss adjustment expense (“LAE”) reserve activities of White Mountains’s insurance subsidiaries for the three and nine months ended September 30, 2015 and 2014:
|  | Three Months Ended |  | Nine Months Ended
|  | September 30, |  | September 30,
Millions |  | 2015 |  | 2014 |  | 2015 |  | 2014
Gross beginning balance |  | $ | 1,357.0 |  |  | $ | 1,137.8 |  |  | $ | 1,350.0 |  |  | $ | 1,054.3 |
Less beginning reinsurance recoverable on unpaid losses |  | (147.2 | ) |  | (92.1 | ) |  | (161.7 | ) |  | (80.2 | )
Net loss and LAE reserves |  | 1,209.8 |  |  | 1,045.7 |  |  | 1,188.3 |  |  | 974.1 |
Loss and LAE reserves consolidated — SSIE |  | — |  |  | — |  |  | — |  |  | 13.6 |
Loss and LAE incurred relating to: |  |  |  |  |  |  |  |  |  |
Current year losses |  | 170.4 |  |  | 178.4 |  |  | 536.7 |  |  | 511.0 |
Prior year losses |  | (0.4 | ) |  | 7.1 |  |  | (2.6 | ) |  | 16.3 |
Total incurred losses and LAE |  | 170.0 |  |  | 185.5 |  |  | 534.1 |  |  | 527.3 |
Loss and LAE paid relating to: |  |  |  |  |  |  |  |  |  |
Current year losses |  | (53.0 | ) |  | (55.9 | ) |  | (120.2 | ) |  | (116.5 | )
Prior year losses |  | (108.1 | ) |  | (107.3 | ) |  | (383.5 | ) |  | (330.5 | )
Total loss and LAE payments |  | (161.1 | ) |  | (163.2 | ) |  | (503.7 | ) |  | (447.0 | )
Net ending balance |  | 1,218.7 |  |  | 1,068.0 |  |  | 1,218.7 |  |  | 1,068.0 |
Plus ending reinsurance recoverable on unpaid losses |  | 214.6 |  |  | 101.5 |  |  | 214.6 |  |  | 101.5 |
Gross ending balance |  | $ | 1,433.3 |  |  | $ | 1,169.5 |  |  | $ | 1,433.3 |  |  | $ | 1,169.5 |
Loss and LAE incurred relating to prior year losses for the three and nine months ended September 30, 2015 For the three and nine months ended September 30, 2015, White Mountains experienced net favorable loss reserve development of $0.4 million and $2.6 million. During the three months ended September 30, 2015, OneBeacon experienced no net loss and LAE reserve development. For the nine months ended September 30, 2015, OneBeacon had net favorable loss reserve development of $1.8 million. For the three and nine months ended September 30, 2015, SSIE had net favorable loss reserve development of $0.4 million and $0.8 million. Loss and LAE incurred relating to prior year losses for the three and nine months ended September 30, 2014 For the three and nine months ended September 30, 2014, White Mountains experienced net unfavorable loss reserve development of $7.1 million and $16.3 million. For the three and nine months ended September 30, 2014, OneBeacon had net unfavorable loss reserve development of $7.3 million and $14.3 million primarily related to a few large losses in OneBeacon Other Professional Lines and Management Liability, as well as OneBeacon Entertainment, OneBeacon Government Risks and OneBeacon Accident Group, partially offset by favorable loss reserve development in OneBeacon Specialty Property. For both the three and nine months ended September 30, 2014, SSIE had net favorable loss reserve development of $0.2 million and net unfavorable loss reserve development of $2.0 million.

X
- References No definition available. + Details
Name: | us-gaap_InsuranceLossReservesAbstract
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition The entire disclosure for liabilities related to future policy benefits and unpaid claims and claim adjustments. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 944 -SubTopic 40 -Section 50 -Paragraph 6 -URI http://asc.fasb.org/extlink&oid=6482852&loc=d3e14931-158439 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 944 -SubTopic 40 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6482485&loc=d3e14754-158437 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 944 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.7-03.13(a)(1),(b)) -URI http://asc.fasb.org/extlink&oid=6879938&loc=d3e572229-122910 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 944 -SubTopic 40 -Section 50 -Paragraph 3 -URI http://asc.fasb.org/extlink&oid=6482485&loc=d3e14764-158437 + Details
Name: | us-gaap_LiabilityForFuturePolicyBenefitsAndUnpaidClaimsDisclosureTextBlock
Namespace Prefix: | us-gaap_
Data Type: | nonnum:textBlockItemType
Balance Type: | na
Period Type: | duration