Quick Answer
WHITE MOUNTAINS INSURANCE GROUP LTD reported Long Term Debt of $837.00 million for the year ending 2025.
- WHITE MOUNTAINS INSURANCE GROUP LTD showed an increase of +48.8% in Long Term Debt from 2024 to 2025.
- This data is from WHITE MOUNTAINS INSURANCE GROUP LTD's annual report (Form 10-K), filed with the SEC on February 27, 2026.
- XBRL data for this metric is available from 2010 to 2025 (16 years of filings). Earlier data may not exist in machine-readable XBRL format as companies adopted electronic filing at different times.
- Quarterly values from 10-Q filings: Q1 2012: $677.20 million | Q2 2012: $677.60 million | Q3 2012: $676.60 million | Q1 2013: $676.20 million | Q2 2013: $676.30 million | Q3 2013: $676.30 million | Q1 2014: $677.60 million | Q2 2014: $677.50 million | Q3 2014: $678.10 million | Q1 2015: $749.80 million | Q2 2015: $748.50 million | Q3 2015: $383.30 million | Q1 2016: $532.60 million | Q2 2016: $289.80 million | Q3 2016: $288.50 million | Q1 2017: $284.70 million | Q2 2017: $10.60 million | Q3 2017: $9.40 million | Q1 2018: $21.50 million | Q2 2018: $169.60 million | Q3 2018: $164.30 million | Q1 2019: $195.40 million | Q2 2019: $230.50 million | Q3 2019: $230.20 million | Q1 2020: $294.70 million | Q2 2020: $349.80 million | Q3 2020: $359.40 million | Q1 2021: $429.70 million | Q2 2021: $428.80 million | Q3 2021: $710.40 million | Q1 2022: $690.90 million | Q2 2022: $618.10 million | Q3 2022: $615.50 million | Q1 2023: $556.30 million | Q2 2023: $566.10 million | Q3 2023: $564.70 million | Q1 2024: $532.10 million | Q2 2024: $530.20 million | Q3 2024: $544.90 million | Q1 2025: $676.10 million | Q2 2025: $694.60 million | Q3 2025: $870.40 million.
- Over the full 16 years of available data (2010 to 2025), WHITE MOUNTAINS INSURANCE GROUP LTD's Long Term Debt has grown by 2.2%.
- Historical annual values: Fiscal year 2025: $837.00 million | Fiscal year 2024: $562.50 million | Fiscal year 2023: $564.60 million | Fiscal year 2022: $575.20 million | Fiscal year 2021: $420.90 million | Fiscal year 2020: $376.40 million | Fiscal year 2019: $283.50 million | Fiscal year 2018: $192.70 million | Fiscal year 2017: $23.80 million | Fiscal year 2016: $12.70 million | Fiscal year 2015: $337.60 million | Fiscal year 2014: $343.10 million | Fiscal year 2013: $676.40 million | Fiscal year 2012: $751.20 million | Fiscal year 2011: $677.50 million | Fiscal year 2010: $818.80 million.
- Data sourced from SEC EDGAR public filings as of August 6, 2026.
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