XML 49 R28.htm IDEA: XBRL DOCUMENT
v3.3.0.814

Loss and Loss Adjustment Expense Reserves (Tables) | 9 Months Ended
--- | ---
Sep. 30, 2015
Insurance Loss Reserves [Abstract] |
Loss and loss adjustment expense ("LAE") reserve activities | 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 |

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 Tabular disclosure of the activity in the reserve for settling insured claims and expenses incurred in the claims settlement process for the period. The estimated liability includes the amount of money that will be required for future payments of (a) claims that have been reported to the insurer, (b) claims related to insured events that have occurred but that have not been reported to the insurer as of the date the liability is estimated, and (c) claim adjustment expenses. Claim adjustment expenses include costs incurred in the claim settlement process such as legal fees; outside adjuster fees; and costs to record, process, and adjust claims. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 944 -SubTopic 40 -Section 50 -Paragraph 3 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=6482485&loc=d3e14764-158437 + Details
Name: | us-gaap_ScheduleOfLiabilityForUnpaidClaimsAndClaimsAdjustmentExpense
Namespace Prefix: | us-gaap_
Data Type: | nonnum:textBlockItemType
Balance Type: | na
Period Type: | duration