Municipal Bond Guarantee Insurance (Tables)

12 Months Ended

Dec. 31, 2020

Insurance [Abstract]

Schedule of Insured Obligations

The following table presents a schedule of BAM’s insured obligations as of December 31, 2020 and 2019:

	December 31, 2020		December 31, 2019
Contracts outstanding	10,997		8,987
Remaining weighted average contract period (in years)	10.7		10.7
Contractual debt service outstanding (in millions):
Principal	$	75,287.7	$	62,250.5
Interest and capital appreciation	36,448.8		31,799.7
Total debt service outstanding	$	111,736.5	$	94,050.2
Gross unearned insurance premiums	$	237.5	$	198.4

Schedule of BAM’s future premium revenues

The following table presents a schedule of BAM’s future premium revenues as of December 31, 2020:

Millions	December 31, 2020
January 1, 2021 - March 31, 2021	$	5.6
April 1, 2021 - June 30, 2021	5.5
July 1, 2021 - September 30, 2021	5.5
October 1, 2021 - December 31, 2021	5.4
	22.0
2022	20.9
2023	19.8
2024	18.3
2025	17.0
2026 and thereafter	139.5
Total gross unearned insurance premiums	$	237.5

Schedule of Net Written Premiums

The following table presents a schedule of written premiums and earned premiums included in White Mountains’s HG Global/BAM segment for the years ended December 31, 2020, 2019 and 2018:

Millions	December 31, 2020		December 31, 2019		December 31, 2018
Written premiums:
Direct	$	61.5	$	28.1	$	44.8
Assumed	.2		10.6		8.1
Gross written premiums	$	61.7	$	38.7	$	52.9
Earned premiums:
Direct	$	19.4	$	13.6	$	13.6
Assumed	3.4		2.7		.3
Gross earned premiums	$	22.8	$	16.3	$	13.9