Municipal Bond Guarantee Insurance (Tables)

12 Months Ended

Dec. 31, 2018

Financial Guarantee Insurance Contracts, Premium Received over Contract Period [Table Text Block]

The following table presents a schedule of BAM’s future premium revenues as of December 31, 2018:



Millions	December 31, 2018
January 1, 2019 - March 31, 2019	$	4.1
April 1, 2019 - June 30, 2019	4.0
July 1, 2019 - September 30, 2019	4.0
October 1, 2019 - December 31, 2019	3.8
	15.9
2020	15.0
2021	14.0
2022	13.2
2023	12.3
2024 and thereafter	105.6
Total gross unearned insurance premiums	$	176.0

Schedule of Insured Obligations

The following table presents a schedule of BAM’s insured obligations as of December 31, 2018 and 2017:



	December 31, 2018		December 31, 2017
Contracts outstanding	7,525		6,371
Remaining weighted average contract period (in years)	10.7		10.9
Contractual debt service outstanding (in millions):
Principal	$	52,201.6	$	42,090.6
Interest and capital appreciation	26,560.3		21,057.1
Total debt service outstanding	$	78,761.9	$	63,147.7

Gross unearned insurance premiums	$	176.0	$	136.8

Schedule of Net Written Premiums

The following table presents a schedule of net written premiums and net earned premiums included in White Mountains’s HG Global/BAM segment for the years ended December 31, 2018, 2017 and 2016:



Millions	December 31, 2018		December 31, 2017		December 31, 2016
Written premiums:
Direct	$	44.8	$	63.2	$	38.6
Assumed	8.1		—		—
Net written premiums	$	52.9	$	63.2	$	38.6
Earned premiums:
Direct	$	13.6	$	9.4	$	5.9
Assumed	.3		—		—
Net earned premiums	$	13.9	$	9.4	$	5.9