XML 52 R35.htm IDEA: XBRL DOCUMENT v3.22.0.1
SCHEDULE V VALUATION AND QUALIFYING ACCOUNTS
 12 Months Ended
Dec. 31, 2021
SEC Schedule, 12-09, Valuation and Qualifying Accounts [Abstract]  
SCHEDULE V VALUATION AND QUALIFYING ACCOUNTS
WHITE MOUNTAINS INSURANCE GROUP, LTD.
VALUATION AND QUALIFYING ACCOUNTS

Column AColumn BColumn CColumn DColumn E
Additions (subtractions)
MillionsBalance at beginning of
period		Charged to costs
and expenses		Charged to other
accounts
Deductions described (1)
Balance at end of
period
Years ended:     
December 31, 2021     
Reinsurance recoverable on paid losses:     
Allowance for reinsurance balances$.3 $.4 $— $— $.7 
(1)Represents net collections (charge-offs) of balances receivable and foreign currency translation.