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v3.22.0.1

Statutory Capital and Surplus (Details) - USD ($) | 1 Months Ended | 12 Months Ended |
--- | --- | --- | ---
Dec. 31, 2021 | Dec. 31, 2020 | Jan. 31, 2020 | Dec. 31, 2021 | Dec. 31, 2020 | Dec. 31, 2019 | Dec. 31, 2012
Statutory Accounting Practices [Line Items] |  |  |  |  |  |  |
Cash and investments included in collateral trust | $ 481,700,000 |  |  | $ 481,700,000 |  |  |
Other long-term investments | 1,377,800,000 | $ 786,800,000 |  | 1,377,800,000 | $ 786,800,000 |  |
Total assets | 7,000,700,000 | 4,831,400,000 |  | 7,000,700,000 | 4,831,400,000 |  |
Lloyds Bank |  |  |  |  |  |  |
Statutory Accounting Practices [Line Items] |  |  |  |  |  |  |
Total assets | 343,600,000 |  |  | 343,600,000 |  |  |
HG Global-BAM |  |  |  |  |  |  |
Statutory Accounting Practices [Line Items] |  |  |  |  |  |  |
Total assets | 1,044,800,000 | 1,017,800,000 |  | 1,044,800,000 | 1,017,800,000 |  |
BAM |  |  |  |  |  |  |
Statutory Accounting Practices [Line Items] |  |  |  |  |  |  |
Surplus notes | 364,600,000 | 388,200,000 |  | 364,600,000 | 388,200,000 |  |
Interest receivable | 5,700,000 | 4,400,000 |  | 5,700,000 | 4,400,000 |  |
Accrued interest on surplus notes | 157,600,000 | 155,700,000 |  | 157,600,000 | 155,700,000 |  |
Ark |  |  |  |  |  |  |
Statutory Accounting Practices [Line Items] |  |  |  |  |  |  |
Total assets | 3,027,000,000 | 0 |  | 3,027,000,000 | 0 |  |
NSM |  |  |  |  |  |  |
Statutory Accounting Practices [Line Items] |  |  |  |  |  |  |
Distributions made |  |  |  | 8,000,000 |  |  |
Kudu |  |  |  |  |  |  |
Statutory Accounting Practices [Line Items] |  |  |  |  |  |  |
Distributions made |  |  |  | 19,400,000 |  |  |
Total assets | 727,100,000 | 430,200,000 |  | 727,100,000 | 430,200,000 |  |
Other Operations |  |  |  |  |  |  |
Statutory Accounting Practices [Line Items] |  |  |  |  |  |  |
Unrestricted cash | 453,500,000 |  |  | 453,500,000 |  |  |
Other long-term investments | 170,500,000 |  |  | 170,500,000 |  |  |
Total assets | 1,208,400,000 | 2,381,500,000 |  | 1,208,400,000 | 2,381,500,000 |  |
HG Global |  |  |  |  |  |  |
Statutory Accounting Practices [Line Items] |  |  |  |  |  |  |
Collateral held in supplement trust | 852,000,000 | 827,100,000 |  | 852,000,000 | 827,100,000 |  |
Cash and investments included in collateral trust | 481,700,000 | 434,500,000 |  | 481,700,000 | 434,500,000 |  |
Interest receivable | 157,600,000 | 155,700,000 |  | 157,600,000 | 155,700,000 |  |
HG Re | HG Global-BAM |  |  |  |  |  |  |
Statutory Accounting Practices [Line Items] |  |  |  |  |  |  |
Statutory capital and surplus | 760,000,000 |  |  | 760,000,000 |  |  |
Surplus required | 1 |  |  | 1 |  |  |
Cash outside of collateral trusts | 3,100,000 |  |  | 3,100,000 |  |  |
Collateral held in supplement trust | 852,000,000 |  |  | 852,000,000 |  |  |
Cash and investments outside of collateral trusts | 9,400,000 |  |  | 9,400,000 |  |  |
Accrued interest held in supplemental trust | 116,800,000 |  |  | 116,800,000 |  |  |
BAM | HG Global-BAM |  |  |  |  |  |  |
Statutory Accounting Practices [Line Items] |  |  |  |  |  |  |
Statutory capital and surplus | 298,100,000 |  |  | 298,100,000 |  |  |
Surplus required | 66,000,000 |  |  | 66,000,000 |  |  |
Statutory net loss |  |  |  | (49,300,000) | (59,300,000) | $ (38,300,000) |
Ark |  |  |  |  |  |  |
Statutory Accounting Practices [Line Items] |  |  |  |  |  |  |
Other long-term investments | 326,200,000 | 0 |  | 326,200,000 | 0 |  |
Total assets | 3,027,000,000 | 0 |  | 3,027,000,000 | 0 |  |
Ark | Ark |  |  |  |  |  |  |
Statutory Accounting Practices [Line Items] |  |  |  |  |  |  |
Statutory capital and surplus | 780,300,000 |  |  | 780,300,000 |  |  |
Surplus required | $ 288,200,000 |  |  | $ 288,200,000 |  |  |
Percent of statutory capital balance | 15.00% |  |  | 15.00% |  |  |
Percent of statutory capital and surplus balance | 25.00% |  |  | 25.00% |  |  |
Dividend or capital distributions, maximum |  |  |  | $ 113,600,000 |  |  |
Statutory surplus balance | $ 757,600,000 |  |  | 757,600,000 |  |  |
Unrestricted cash | 4,000,000 |  |  | $ 4,000,000 |  |  |
HG Global |  |  |  |  |  |  |
Statutory Accounting Practices [Line Items] |  |  |  |  |  |  |
Percent over a target trust balance |  |  |  | 102.00% |  |  |
Supplement trust target | 603,000,000 |  |  | $ 603,000,000 |  |  |
Surplus notes |  |  |  |  |  |  | $ 503,000,000
HG Global | HG Global-BAM |  |  |  |  |  |  |
Statutory Accounting Practices [Line Items] |  |  |  |  |  |  |
Preferred stock value | $ 619,000,000 |  |  | $ 619,000,000 |  |  |
Ownership interest (as a percent) | 96.90% |  |  | 96.90% |  |  |
Preferred stock dividend rate (as a percent) |  |  |  | 6.00% |  |  |
NSM | NSM |  |  |  |  |  |  |
Statutory Accounting Practices [Line Items] |  |  |  |  |  |  |
Unrestricted cash | $ 22,300,000 |  |  | $ 22,300,000 |  |  |
Kudu |  |  |  |  |  |  |
Statutory Accounting Practices [Line Items] |  |  |  |  |  |  |
Unrestricted cash | 16,900,000 |  |  | 16,900,000 |  |  |
Surplus Note | BAM |  |  |  |  |  |  |
Statutory Accounting Practices [Line Items] |  |  |  |  |  |  |
Cash repayments on notes | 33,800,000 | 30,100,000 | $ 65,000,000 |  |  |  |
Accrued interest on surplus notes | $ 9,800,000 | 8,400,000 | 16,200,000 | $ 9,800,000 | 8,400,000 |  |
Surplus Note | BAM | U.S. treasury rate plus |  |  |  |  |  |  |
Statutory Accounting Practices [Line Items] |  |  |  |  |  |  |
Basis spread on variable rate |  |  |  | 3.00% |  |  |
Effective yield (as a percent) | 3.20% |  |  | 3.20% |  |  |
Surplus Note | BAM | Fixed interest rate |  |  |  |  |  |  |
Statutory Accounting Practices [Line Items] |  |  |  |  |  |  |
Interest rate | 8.00% |  |  | 8.00% |  |  |
Supplemental Trust | BAM |  |  |  |  |  |  |
Statutory Accounting Practices [Line Items] |  |  |  |  |  |  |
Cash repayments on notes | $ 23,600,000 | 21,500,000 | 47,900,000 |  |  |  |
Accrued interest on surplus notes | 400,000 | $ 200,000 | $ 900,000 | $ 400,000 | $ 200,000 |  |
Preferred stocks | HG Global |  |  |  |  |  |  |
Statutory Accounting Practices [Line Items] |  |  |  |  |  |  |
Dividends |  |  |  | 22,000,000 |  |  |
Preferred stocks | HG Global | HG Global-BAM |  |  |  |  |  |  |
Statutory Accounting Practices [Line Items] |  |  |  |  |  |  |
Dividends payable | 414,700,000 |  |  | 414,700,000 |  |  |
Preferred stocks | White Mountains | HG Global | HG Global-BAM |  |  |  |  |  |  |
Statutory Accounting Practices [Line Items] |  |  |  |  |  |  |
Dividends |  |  |  | 21,300,000 |  |  |
Dividends payable | 400,500,000 |  |  | 400,500,000 |  |  |
Common Equities | Other Operations |  |  |  |  |  |  |
Statutory Accounting Practices [Line Items] |  |  |  |  |  |  |
Distributions made |  |  |  | 3,100,000 |  |  |
Common Equities | MediaAlpha |  |  |  |  |  |  |
Statutory Accounting Practices [Line Items] |  |  |  |  |  |  |
Common stock | $ 261,600,000 |  |  | $ 261,600,000 |  |  |

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