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Filing Detail
Form 10-K/A - Annual report [Section 13 and 15(d), not S-K Item 405]: [Amend]
SEC Accession No. 0000776867-21-000006
Filing Date
2021-03-30
Accepted
2021-03-30 16:45:54
Documents
20
Period of Report
2020-12-31

Document Format Files

Seq Description Document Type Size
1 10-K/A wtm-20201231.htm   iXBRL 10-K/A 62237
2 EX-23.1 wtm10-ka2020ex231.htm EX-23.1 2503
3 EX-23.2 wtm10-ka2020ex232.htm EX-23.2 2223
4 EX-31.1 wtm10-ka2020ex311.htm EX-31.1 9340
5 EX-31.2 wtm10-ka2020ex312.htm EX-31.2 9362
6 EX-32.1 wtm10-ka2020ex321.htm EX-32.1 6834
7 EX-32.2 wtm10-ka2020ex322.htm EX-32.2 7000
  Complete submission text file 0000776867-21-000006.txt   318839

Data Files

Seq Description Document Type Size
8 XBRL TAXONOMY EXTENSION SCHEMA DOCUMENT wtm-20201231.xsd EX-101.SCH 2596
9 XBRL TAXONOMY EXTENSION CALCULATION LINKBASE DOCUMENT wtm-20201231_cal.xml EX-101.CAL 874
10 XBRL TAXONOMY EXTENSION DEFINITION LINKBASE DOCUMENT wtm-20201231_def.xml EX-101.DEF 1858
11 XBRL TAXONOMY EXTENSION LABEL LINKBASE DOCUMENT wtm-20201231_lab.xml EX-101.LAB 36231
12 XBRL TAXONOMY EXTENSION PRESENTATION LINKBASE DOCUMENT wtm-20201231_pre.xml EX-101.PRE 19272
13 EXTRACTED XBRL INSTANCE DOCUMENT wtm-20201231_htm.xml XML 16729
Mailing Address 23 SOUTH MAIN STREET SUITE 3B HANOVER NH 03755
Business Address 23 SOUTH MAIN STREET SUITE 3B HANOVER NH 03755 603 640 2200
WHITE MOUNTAINS INSURANCE GROUP LTD (Filer) CIK: 0000776867 (see all company filings)

IRS No.: 942708455 | State of Incorp.: D0 | Fiscal Year End: 1231
Type: 10-K/A | Act: 34 | File No.: 001-08993 | Film No.: 21786597
SIC: 6331 Fire, Marine & Casualty Insurance