CONSOLIDATED BALANCE SHEETS - USD ($) $ in Millions	Sep. 30, 2019	Dec. 31, 2018
Assets
Goodwill and other intangible assets	$ 660.9	$ 537.5
Total assets	3,836.3	3,362.6
Liabilities
Debt	230.2	192.7
Total liabilities	765.4	644.4
White Mountains’s common shareholders’ equity
White Mountains’s common shares at $1 par value per share—authorized 50,000,000 shares; issued and outstanding 3,185,353 and 3,173,115 shares	3.2	3.2
Paid-in surplus	590.0	580.8
Retained earnings	2,611.5	2,264.9
Accumulated other comprehensive loss, after tax:
Net unrealized foreign currency translation and interest rate swap losses	(11.3)	(5.8)
Total White Mountains’s common shareholders’ equity	3,193.4	2,843.1
Non-controlling interests
Non-controlling interests	(122.5)	(124.9)
Total equity	3,070.9	2,718.2
Total liabilities and equity	3,836.3	3,362.6
HG Global-BAM
Assets
Fixed maturity investments, at fair value	794.5	701.4
Short-term investments, at fair value	57.1	66.9
Total investments	851.6	768.3
Cash	11.3	12.5
Insurance premiums receivable	6.7	6.4
Deferred acquisition costs	21.4	19.0
Accrued investment income	5.5	4.9
Other assets	16.4	5.1
Total assets	912.9	816.2
Liabilities
Unearned insurance premiums	203.5	176.0
Accrued incentive compensation	19.0	20.4
Accounts payable on unsettled investment purchases	3.6	2.2
Other liabilities	27.4	13.9
Total liabilities	253.5	212.5
NSM Holding Co LLC
Assets
Short-term investments, at fair value	0.0	1.7
Cash	105.7	66.2
Insurance premiums receivable	53.6	44.0
Goodwill and other intangible assets	630.6	486.2
Other assets	36.8	28.9
Total assets	826.7	627.0
Liabilities
Debt	219.4	178.5
Premiums payable	92.6	77.2
Contingent consideration earnout liabilities	28.7	20.2
Other liabilities	60.1	38.9
Total liabilities	400.8	314.8
Non-controlling interests
Non-controlling interests	15.2	13.6
Kudu Investment Management, LLC
Assets
Short-term investments, at fair value	0.1	0.0
Other long-term investments	219.3	0.0
Cash	4.9	0.0
Accrued investment income	4.7	0.0
Goodwill and other intangible assets	9.6	0.0
Other assets	3.7	0.0
Total assets	242.3	0.0
Liabilities
Other liabilities	5.3	0.0
Total liabilities	5.3	0.0
Non-controlling interests
Non-controlling interests	2.3	0.0
MediaAlpha
Assets
Cash	0.0	5.7
Goodwill and other intangible assets	0.0	43.4
Accounts receivable from publishers and advertisers	0.0	37.0
Other assets	0.0	2.3
Total assets	0.0	88.4
Liabilities
Debt	0.0	14.2
Amounts due to publishers and advertisers	0.0	27.0
Other liabilities	0.0	5.7
Total liabilities	0.0	46.9
Non-controlling interests
Non-controlling interests	0.0	16.2
Other Segment
Assets
Fixed maturity investments, at fair value	371.5	376.1
Short-term investments, at fair value	215.3	145.6
Common equity securities, at fair value	629.7	925.6
Other long-term investments	554.4	325.6
Total investments	1,770.9	1,772.9
Cash	27.3	25.9
Accrued investment income	5.1	5.5
Accounts receivable on unsettled investment sales	0.3	0.0
Goodwill and other intangible assets	20.7	7.9
Other assets	27.3	15.5
Assets held for sale	2.8	3.3
Total assets	1,854.4	1,831.0
Liabilities
Debt	10.8	0.0
Accrued incentive compensation	44.9	38.9
Accounts payable on unsettled investment purchases	0.0	5.0
Other liabilities	50.1	26.3
Total liabilities	$ 105.8	$ 70.2