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Segment Information (Tables) | 12 Months Ended
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Dec. 31, 2019
Segment Reporting [Abstract] |
Financial information for White Mountains' segments | The following tables present the financial information for White Mountains’s segments:
Millions |  | HG Global/BAM (1) |  | NSM |  | Kudu (2) |  | MediaAlpha (3) |  | Other Operations |  | Total
Year Ended December 31, 2019 |  |  |  |  |  |  |  |  |  |  |  |  |  |
Earned insurance premiums |  | $ | 16.3 |  |  | $ | — |  |  | $ | — |  |  | $ | — |  |  | $ | — |  |  | $ | 16.3 |
Net investment income |  | 21.6 |  |  | — |  |  | 14.7 |  |  | — |  |  | 43.4 |  |  | 79.7 |
Net realized and unrealized investment gains |  | 27.1 |  |  | — |  |  | 6.3 |  |  | — |  |  | 285.1 |  |  | 318.5 |
Gain from deconsolidation of MediaAlpha |  | — |  |  | — |  |  | — |  |  | — |  |  | 182.2 |  |  | 182.2 |
Advertising and commission revenues (4) |  | — |  |  | 193.4 |  |  | — |  |  | 48.8 |  |  | 6.9 |  |  | 249.1 |
Other revenues |  | 1.6 |  |  | 39.7 |  |  | .2 |  |  | — |  |  | 6.1 |  |  | 47.6 |
Total revenues |  | 66.6 |  |  | 233.1 |  |  | 21.2 |  |  | 48.8 |  |  | 523.7 |  |  | 893.4 |
Insurance acquisition expenses |  | 5.7 |  |  | — |  |  | — |  |  | — |  |  | — |  |  | 5.7 |
Other underwriting expenses |  | .4 |  |  | — |  |  | — |  |  | — |  |  | — |  |  | .4 |
Cost of sales |  | — |  |  | — |  |  | — |  |  | 40.6 |  |  | 7.5 |  |  | 48.1 |
General and administrative expenses |  | 50.5 |  |  | 132.2 |  |  | 10.1 |  |  | 12.5 |  |  | 122.5 |  |  | 327.8 |
Broker commission expense |  | — |  |  | 64.8 |  |  | — |  |  | — |  |  | — |  |  | 64.8 |
Change in fair value of contingent consideration earnout liabilities |  | — |  |  | 2.1 |  |  | — |  |  | — |  |  | — |  |  | 2.1 |
Amortization of other intangible assets |  | — |  |  | 19.4 |  |  | .2 |  |  | 1.6 |  |  | .6 |  |  | 21.8 |
Interest expense |  | — |  |  | 16.7 |  |  | .1 |  |  | .2 |  |  | .6 |  |  | 17.6 |
Total expenses |  | 56.6 |  |  | 235.2 |  |  | 10.4 |  |  | 54.9 |  |  | 131.2 |  |  | 488.3 |
Pre-tax income (loss) |  | $ | 10.0 |  |  | $ | (2.1 | ) |  | $ | 10.8 |  |  | $ | (6.1 | ) |  | $ | 392.5 |  |  | $ | 405.1 |
(1) | BAM manages its affairs on a statutory accounting basis. BAM’s statutory surplus includes the BAM Surplus Notes and is not reduced by accruals of interest expense on the BAM Surplus Notes. BAM’s statutory surplus is reduced only after a payment of principal or interest has been approved by the NYDFS.
(2) | Kudu’s results are from April 4, 2019, the date of the Kudu Transaction, to December 31, 2019.
(3) | MediaAlpha’s results are from January 1, 2019 to February 26, 2019, the date of the MediaAlpha Transaction.
(4) | Approximately 17% of NSM’s commission revenue was associated with one single carrier.
Millions |  | HG Global/BAM (1) |  | NSM |  | MediaAlpha |  | Other Operations |  | Total
Year Ended December 31, 2018 |  |  |  |  |  |  |  |  |  |  |  |
Earned insurance premiums |  | $ | 13.9 |  |  | $ | — |  |  | $ | — |  |  | $ | — |  |  | $ | 13.9 |
Net investment income |  | 16.7 |  |  | — |  |  | — |  |  | 42.3 |  |  | 59.0 |
Net realized and unrealized investment losses |  | (7.5 | ) |  | — |  |  | — |  |  | (100.8 | ) |  | (108.3 | )
Advertising and commission revenues (2) |  | — |  |  | 89.6 |  |  | 295.5 |  |  | 4.1 |  |  | 389.2 |
Other revenues |  | 1.2 |  |  | 12.0 |  |  | 1.6 |  |  | .5 |  |  | 15.3 |
Total revenues |  | 24.3 |  |  | 101.6 |  |  | 297.1 |  |  | (53.9 | ) |  | 369.1 |
Insurance acquisition expenses |  | 5.3 |  |  | — |  |  | — |  |  | — |  |  | 5.3 |
Other underwriting expenses |  | .4 |  |  | — |  |  | — |  |  | — |  |  | .4 |
Cost of sales |  | — |  |  | — |  |  | 245.0 |  |  | 3.7 |  |  | 248.7 |
General and administrative expenses |  | 48.0 |  |  | 59.4 |  |  | 31.7 |  |  | 94.4 |  |  | 233.5 |
Broker commission expense |  | — |  |  | 28.4 |  |  | — |  |  | — |  |  | 28.4 |
Change in fair value of contingent consideration earnout liabilities |  | — |  |  | 2.7 |  |  | — |  |  | — |  |  | 2.7 |
Amortization of other intangible assets |  | — |  |  | 8.3 |  |  | 10.3 |  |  | .2 |  |  | 18.8 |
Interest expense |  | — |  |  | 8.0 |  |  | 1.2 |  |  | .3 |  |  | 9.5 |
Total expenses |  | 53.7 |  |  | 106.8 |  |  | 288.2 |  |  | 98.6 |  |  | 547.3 |
Pre-tax (loss) income |  | $ | (29.4 | ) |  | $ | (5.2 | ) |  | $ | 8.9 |  |  | $ | (152.5 | ) |  | $ | (178.2 | )
(1) | BAM manages its affairs on a statutory accounting basis. BAM’s statutory surplus includes the BAM Surplus Notes and is not reduced by accruals of interest expense on the BAM Surplus Notes. BAM’s statutory surplus is reduced only after a payment of principal or interest has been approved by the NYDFS.
(2) | As of December 31, 2018, approximately 29% of MediaAlpha’s advertising revenue was associated with one customer. As of December 31, 2018, approximately 33% of NSM’s commission revenue was associated with one single carrier.
Millions |  | HG Global/BAM (1) |  | MediaAlpha |  | Other Operations |  | Total
Year Ended December 31, 2017 |  |  |  |  |  |  |  |  |  |
Earned insurance premiums |  | $ | 9.4 |  |  | $ | — |  |  | $ | 1.0 |  |  | $ | 10.4 |
Net investment income |  | 12.3 |  |  | — |  |  | 43.7 |  |  | 56.0 |
Net realized and unrealized investment gains |  | .6 |  |  | — |  |  | 132.7 |  |  | 133.3 |
Advertising and commission revenues (2) |  | — |  |  | 163.2 |  |  | 3.8 |  |  | 167.0 |
Other revenues |  | 1.0 |  |  | — |  |  | 6.1 |  |  | 7.1 |
Total revenues |  | 23.3 |  |  | 163.2 |  |  | 187.3 |  |  | 373.8 |
Losses and LAE |  | — |  |  | — |  |  | 1.1 |  |  | 1.1 |
Insurance acquisition expenses |  | 4.0 |  |  | — |  |  | .1 |  |  | 4.1 |
Other underwriting expenses |  | .4 |  |  | — |  |  | — |  |  | .4 |
Cost of sales |  | — |  |  | 135.9 |  |  | 3.5 |  |  | 139.4 |
General and administrative expenses |  | 42.9 |  |  | 16.2 |  |  | 148.9 |  |  | 208.0 |
Amortization of other intangible assets |  | — |  |  | 10.5 |  |  | .2 |  |  | 10.7 |
Interest expense |  | — |  |  | 1.0 |  |  | 1.3 |  |  | 2.3 |
Total expenses |  | 47.3 |  |  | 163.6 |  |  | 155.1 |  |  | 366.0 |
Pre-tax (loss) income |  | $ | (24.0 | ) |  | $ | (.4 | ) |  | $ | 32.2 |  |  | $ | 7.8 |
(1) | BAM manages its affairs on a statutory accounting basis. BAM’s statutory surplus includes the BAM Surplus Notes and is not reduced by accruals of interest expense on the BAM Surplus Notes. BAM’s statutory surplus is reduced only after a payment of principal or interest has been approved by the NYDFS.
(2) | As of December 31, 2017, approximately 27% of MediaAlpha’s advertising revenue was associated with one customer.
Schedule of selected balance sheet data by segment |
Millions Selected Balance Sheet Data |  | HG Global/BAM |  | NSM |  | Kudu |  | MediaAlpha |  | Other Operations |  | Held for Sale |  | Total
December 31, 2019: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Total investments |  | $ | 845.6 |  |  | $ | — |  |  | $ | 266.6 |  |  | $ | — |  |  | $ | 1,835.0 |  |  | $ | — |  |  | $ | 2,947.2 |
Total assets |  | $ | 924.0 |  | (1) | $ | 825.2 |  |  | $ | 290.5 |  |  | $ | — |  |  | $ | 1,940.5 |  | (2) | $ | 3.0 |  |  | $ | 3,983.2 |
Total liabilities |  | $ | 246.8 |  | (2) | $ | 401.1 |  |  | $ | 57.0 |  |  | $ | — |  |  | $ | 133.6 |  |  | $ | — |  |  | $ | 838.5 |
Total White Mountains’s common shareholders’ equity |  | $ | 809.5 |  | (2) | $ | 409.3 |  |  | $ | 231.3 |  |  | $ | — |  |  | $ | 1,808.4 |  | (2) | $ | 3.0 |  |  | $ | 3,261.5 |
Non-controlling interest |  | $ | (132.3 | ) |  | $ | 14.8 |  |  | $ | 2.2 |  |  | $ | — |  |  | $ | (1.5 | ) |  | $ | — |  |  | $ | (116.8 | )
December 31, 2018: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Total investments |  | $ | 768.3 |  |  | $ | — |  |  | $ | — |  |  | $ | — |  |  | $ | 1,774.6 |  |  | $ | — |  |  | $ | 2,542.9 |
Total assets |  | $ | 816.2 |  | (1) | $ | 623.6 |  |  | $ | — |  |  | $ | 88.4 |  |  | $ | 1,831.1 |  | (2) | $ | 3.3 |  |  | $ | 3,362.6 |
Total liabilities |  | $ | 212.5 |  | (2) | $ | 314.8 |  |  | $ | — |  |  | $ | 46.9 |  |  | $ | 70.2 |  |  | $ | — |  |  | $ | 644.4 |
Total White Mountains’s common shareholders’ equity |  | $ | 759.8 |  | (2) | $ | 294.9 |  |  | $ | — |  |  | $ | 25.3 |  |  | $ | 1,759.8 |  | (2) | $ | 3.3 |  |  | $ | 2,843.1 |
Non-controlling interest |  | $ | (156.1 | ) |  | $ | 13.9 |  |  | $ | — |  |  | $ | 16.2 |  |  | $ | 1.1 |  |  | $ | — |  |  | $ | (124.9 | )
(1) | As of December 2019 and 2018, total assets in the HG Global/BAM segment reflected the elimination of $457.6 and $481.3 of BAM Surplus Notes issued to HG Global and its subsidiaries, and $162.7 and $143.7 in accrued interest related to the BAM Surplus Notes.
(2) HG Global preferred dividends payable to White Mountains’s subsidiaries is eliminated in White Mountains’s consolidated financial statements. For segment reporting, the HG Global preferred dividends payable to White Mountains’s subsidiaries included within the HG Global/BAM segment are eliminated against the offsetting receivable included within the Other Operations segment and therefore added back to White Mountains’s common shareholders’ equity within the HG Global/BAM segment. As of December 31, 2019 and 2018, the HG Global preferred dividends payable to White Mountains’s subsidiaries was $330.3 and $278.5.
Reconciliation of Revenue from Segments to Consolidated | In compliance with ASC 606, Revenues from Contracts with Customers, the following tables present White Mountains’s total revenues by revenue source:
Millions |  | HG Global/BAM |  | NSM |  | Kudu (2) |  | MediaAlpha (3) |  | Other Operations |  | Total
Year Ended December 31, 2019 |  |  |  |  |  |  |  |  |  |  |  |
Commission and Other Revenue |  |  |  |  |  |  |  |  |  |  |  |
Specialty Transportation |  | $ | — |  |  | $ | 77.6 |  |  | $ | — |  |  | $ | — |  |  | $ | — |  |  | $ | 77.6 |
Real Estate |  | — |  |  | 34.7 |  |  | — |  |  | — |  |  | — |  |  | 34.7 |
Social Services |  | — |  |  | 25.9 |  |  | — |  |  | — |  |  | — |  |  | 25.9 |
Pet |  | — |  |  | 30.0 |  |  | — |  |  | — |  |  | — |  |  | 30.0 |
United Kingdom |  | — |  |  | 45.9 |  |  | — |  |  | — |  |  | — |  |  | 45.9 |
Other |  | — |  |  | 19.0 |  |  | — |  |  | — |  |  | 6.9 |  |  | 25.9 |
Total Commission and Other Revenue |  | — |  |  | 233.1 |  |  | — |  |  | — |  |  | 6.9 |  |  | 240.0 |
Advertising revenues |  | — |  |  | — |  |  | — |  |  | 48.8 |  |  | — |  |  | 48.8 |
Products |  | — |  |  | — |  |  | — |  |  | — |  |  | 5.5 |  |  | 5.5 |
Total revenues from contracts with customers | — |  |  | 233.1 |  |  | — |  |  | 48.8 |  |  | 12.4 |  |  | 294.3 |
Other revenues (1) |  | 66.6 |  |  | — |  |  | 21.2 |  |  | — |  |  | 511.3 |  |  | 599.1 |
Total revenues |  | $ | 66.6 |  |  | $ | 233.1 |  |  | $ | 21.2 |  |  | $ | 48.8 |  |  | $ | 523.7 |  |  | $ | 893.4 |
(1) | Other revenues consist of premiums, investment income, investment gains and losses and other revenues outside the scope of ASC 606, Revenues from Contracts with Customers.
(2) | Kudu’s results are from April 4, 2019, the date of the Kudu Transaction, to December 31, 2019.
(3) | MediaAlpha’s results are from January 1, 2019 to February 26, 2019, the date of the MediaAlpha Transaction.
Millions |  | HG Global/BAM |  | NSM |  | MediaAlpha |  | Other Operations |  | Total
Year Ended December 31, 2018 |  |  |  |  |  |  |  |  |  |
Commission and Other Revenue |  |  |  |  |  |  |  |  |  |
Specialty Transportation |  | $ | — |  |  | $ | 28.3 |  |  | $ | — |  |  | $ | — |  |  | $ | 28.3 |
Real Estate |  | — |  |  | 17.8 |  |  | — |  |  | — |  |  | 17.8 |
Social Services |  | — |  |  | 14.7 |  |  | — |  |  | — |  |  | 14.7 |
United Kingdom |  | — |  |  | 28.0 |  |  | — |  |  | — |  |  | 28.0 |
Other |  | — |  |  | 12.8 |  |  | — |  |  | 4.1 |  |  | 16.9 |
Total Commission and Other Revenue |  | — |  |  | 101.6 |  |  | — |  |  | 4.1 |  |  | 105.7 |
Advertising revenues |  | — |  |  | — |  |  | 295.5 |  |  | — |  |  | 295.5 |
Total revenues from contracts with customers | — |  |  | 101.6 |  |  | 295.5 |  |  | 4.1 |  |  | 401.2 |
Other revenues (1) |  | 24.3 |  |  | — |  |  | 1.6 |  |  | (58.0 | ) |  | (32.1 | )
Total revenues |  | $ | 24.3 |  |  | $ | 101.6 |  |  | $ | 297.1 |  |  | $ | (53.9 | ) |  | $ | 369.1 |
(1) Other revenues consist of premiums, investment income, investment gains and losses and other revenues outside the scope of ASC 606, Revenues from Contracts with Customers.
Millions |  | HG Global/BAM |  | MediaAlpha |  | Other Operations |  | Total
Year Ended December 31, 2017 |  |  |  |  |  |  |  |
Commission and Other Revenue |  |  |  |  |  |  |  |
Other |  | $ | — |  |  | $ | — |  |  | $ | .4 |  |  | $ | .4 |
Total Commission and Other Revenue |  | — |  |  | — |  |  | .4 |  |  | .4 |
Advertising revenues |  | — |  |  | 163.2 |  |  | — |  |  | 163.2 |
Total revenues from contracts with customers | — |  |  | 163.2 |  |  | .4 |  |  | 163.6 |
Other revenues (1) |  | 23.3 |  |  | — |  |  | 186.9 |  |  | 210.2 |
Total revenues |  | $ | 23.3 |  |  | $ | 163.2 |  |  | $ | 187.3 |  |  | $ | 373.8 |
(1) Other revenues consist of premiums, investment income, investment gains and losses and other revenues outside the scope of ASC 606, Revenues from Contracts with Customers.

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