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SCHEDULE II - CONDENSED FINANCIAL INFORMATION OF THE REGISTRANT - CONDENSED STATEMENTS OF CASH FLOWS (Details) - USD ($) $ in Millions | 12 Months Ended
--- | ---
Dec. 31, 2024 | Dec. 31, 2023 | Dec. 31, 2022
CONDENSED FINANCIAL INFORMATION OF THE REGISTRANT |  |  |
Net income (loss) | $ 284.1 | $ 580.9 | $ 712.4
Charges (credits) to reconcile net income to net cash from operations: |  |  |
Net realized and unrealized investment (gains) losses | (184.9) | (434.2) | 191.5
Net (income) loss from discontinued operation, net of tax - NSM Group |  |  | (902.5)
Amortization of restricted share awards | 16.3 | 15.3 | 14.0
Net other operating activities | (50.5) | (3.9) | 80.8
Net cash provided from (used for) operations | 586.8 | 404.1 | 365.0
Cash flows from investing activities: |  |  |
Net change in short-term investments | 548.4 | (495.8) | (455.1)
Release of cash (pre-funding) for ILS funds managed by Elementum | 0.0 | 70.0 | (70.0)
Proceeds from the sale of Other Operating Businesses, net of cash sold of $0.0, $0.0 and $0.5 | 0.0 | 17.3 | 1,392.0
Cash sold in subsidiary transaction | 4.2 | 0.0 | 0.0
Net cash provided from (used for) investing activities | (447.0) | (543.9) | 115.5
Cash flows from financing activities: |  |  |
Repurchases and retirement of common shares | (7.9) | (32.7) | (615.8)
Cash dividends paid to common shareholders | (2.5) | (2.6) | (3.0)
Net cash provided from (used for) financing activities | 4.2 | 7.2 | (344.9)
Cash balance at beginning of year | 122.4 | 255.0 | 147.7
Cash balance at end of year | 266.4 | 122.4 | 255.0
Total White Mountains’s common shareholders’ equity | 4,483.7 | 4,240.5 |
Common equity securities, at fair value | 650.0 | 538.4 |
Other long-term investments | 2,150.2 | 1,998.2 |
Net change in (receivables) payables to subsidiaries | (14.4) | 8.4 | 3.3
Purchases of fixed maturity investments | 1,677.5 | 592.7 | 585.5
White Mountains Adams, Inc. |  |  |
Cash flows from financing activities: |  |  |
Distributions, cash |  |  | 25.0
Bridge Holdings, Ltd. |  |  |
Cash flows from financing activities: |  |  |
Total White Mountains’s common shareholders’ equity |  |  | 3,540.6
Intercompany note receivable |  |  | 76.4
Investments in consolidated subsidiaries |  |  | 2,003.6
Fixed maturity investments, at fair value |  |  | 28.6
Common equity securities, at fair value |  |  | 8.1
Other long-term investments |  |  | 52.2
Short-term investments, at fair value |  |  | 1,358.7
Other assets |  |  | 6.0
Proceeds from borrowings |  |  | 69.0
WM Hinson |  |  |
Cash flows from financing activities: |  |  |
Distributions, cash | 47.0 |  |
Repayments of debt in short-term investments |  | 61.7 |
Proceeds from borrowings | 208.9 | 20.0 |
Repayments of principal debt | 190.0 | 42.4 |
Repayments of debt in investments |  | 107.6 |
Repayments of debt in fixed maturity investments |  | 45.9 |
WM Webster |  |  |
Cash flows from financing activities: |  |  |
Distributions, cash | 7.5 |  |
Distributions, short-term investments | 4.9 |  |
WM Madison |  |  |
Cash flows from financing activities: |  |  |
Distributions, cash | $ 2.1 |  |
Ownership subsidiary | 3.50% |  |
Purchases of fixed maturity investments |  |  | 14.0
WM Taylor |  |  |
Cash flows from financing activities: |  |  |
Distributions, cash | $ 300.0 |  |
Ownership subsidiary | 94.20% |  |
HG Global |  |  |
Cash flows from financing activities: |  |  |
Proceeds from borrowings | $ 15.2 | 7.5 |
Repayments of principal debt | 19.2 | 9.5 |
White Mountain Investments Luxembourg |  |  |
Cash flows from financing activities: |  |  |
Proceeds from borrowings |  | 105.0 |
Purchases of fixed maturity investments | 8.0 |  |
Subsidiary - Bridge Holdings, Ltd. |  |  |
Charges (credits) to reconcile net income to net cash from operations: |  |  |
Accumulated earnings distributed from subsidiary in cash |  |  | 7.0
Cash flows from financing activities: |  |  |
Repayments of principal debt |  |  | 15.0
White Mountains Insurance Group Ltd. |  |  |
CONDENSED FINANCIAL INFORMATION OF THE REGISTRANT |  |  |
Net income (loss) | 230.4 | 509.2 | 792.8
Charges (credits) to reconcile net income to net cash from operations: |  |  |
Net realized and unrealized investment (gains) losses | (50.5) | (78.9) | 5.6
Equity in (earnings) losses from consolidated and unconsolidated subsidiaries, net of tax | (232.3) | (489.2) | 42.0
Net (income) loss from discontinued operation, net of tax - NSM Group | 0.0 | 0.0 | (16.4)
Other non-cash reconciling items | (1.1) | (2.6) | (7.0)
Accumulated earnings distributed from subsidiary in cash | 24.2 | 17.3 | 7.0
Net other operating activities | (17.1) | 9.2 | 17.2
Net cash provided from (used for) operations | (30.1) | (19.7) | (31.6)
Cash flows from investing activities: |  |  |
Net change in short-term investments | 133.9 | (63.8) | 1,165.6
Purchases of investment securities | (107.9) | (125.0) | (359.2)
Maturities, calls, paydowns and sales of investment securities | 100.0 | 335.4 | 15.7
Purchases of investment securities from subsidiaries (7) | (12.0) | 0.0 | (14.0)
Release of cash (pre-funding) for ILS funds managed by Elementum | 0.0 | 70.0 | (70.0)
Net issuance of debt (to) from subsidiaries | (224.1) | (132.5) | (142.0)
Net repayment of debt to (from) subsidiaries | 209.2 | 31.4 | (15.0)
Net distributions from (contributions to) subsidiaries | (58.8) | (60.3) | 49.3
Proceeds from the sale of Other Operating Businesses, net of cash sold of $0.0, $0.0 and $0.5 | 0.0 | 0.0 | 19.5
Cash sold in subsidiary transaction | 0.0 | 0.0 | 0.5
Net cash provided from (used for) investing activities | 40.3 | 55.2 | 649.9
Cash flows from financing activities: |  |  |
Repurchases and retirement of common shares | (7.9) | (32.7) | (615.8)
Cash dividends paid to common shareholders | (2.5) | (2.6) | (3.0)
Net cash provided from (used for) financing activities | (10.4) | (35.3) | (618.8)
Net change in cash during the year | (0.2) | 0.2 | (0.5)
Cash balance at beginning of year | 0.3 | 0.1 | 0.6
Cash balance at end of year | 0.1 | 0.3 | 0.1
Total White Mountains’s common shareholders’ equity | 4,483.7 | 4,240.5 |
Investments in consolidated subsidiaries | 3,944.5 | 3,666.9 |
Fixed maturity investments, at fair value | 70.0 | 0.0 |
Common equity securities, at fair value | 234.7 | 147.8 |
Other long-term investments | 74.0 | 160.5 |
Short-term investments, at fair value | 62.4 | 198.8 |
Other assets | 4.6 | 4.0 |
Noncash payment in short-term investments |  | 10.0 |
Purchases of fixed maturity investments | 12.0 |  |
Subsidiary - White Mountains Investments Bermuda |  |  |
Cash flows from financing activities: |  |  |
Distributions, cash | 4.3 |  | 51.0
Distributions, short-term investments | 18.7 |  |
Subsidiary - White Mountain Adams, Inc. |  |  |
Cash flows from financing activities: |  |  |
Distributions, short-term investments |  |  | 100.0
Contributions, short-term investments and cash | 319.5 |  |
Repayments of debt in short-term investments | 17.2 |  |
Contributions, cash | 0.2 |  |
Subsidiary - HG Global |  |  |
Cash flows from financing activities: |  |  |
Contributions, cash |  |  | 116.3
Proceeds from borrowings |  |  | 6.0
Subsidiary - Ark Insurance Holdings Limited |  |  |
Cash flows from financing activities: |  |  |
Contributions, cash |  |  | 7.7
Subsidiary - PSC Holdings, Ltd. |  |  |
Cash flows from financing activities: |  |  |
Contributions, cash |  |  | 1.3
Subsidiary - WM Birkdale |  |  |
Cash flows from financing activities: |  |  |
Repayments of debt in short-term investments |  | 36.9 |
Repayments of principal debt |  | 20.5 |
Repayments of debt in investments |  | 73.8 |
Repayments of debt in fixed maturity investments |  | $ 36.9 |
Purchases of fixed maturity investments | $ 4.0 |  |
Subsidiary - White Mountain Hinson Bermuda |  |  |
Cash flows from financing activities: |  |  |
Proceeds from borrowings |  |  | $ 205.0

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