Debt (Tables)

3 Months Ended

Mar. 31, 2017

Debt Disclosure [Abstract]

Schedule of debt outstanding

White Mountains’s debt outstanding as of March 31, 2017 and December 31, 2016 consisted of the following:

Millions	March 31, 2017			Effective   Rate (1)	December 31, 2016			Effective   Rate (1)
WTM Bank Facility	$	—		N/A	$	—		N/A
OBH Senior Notes, at face value	275.0			4.7%	275.0			4.7%
Unamortized original issue discount and debt issuance costs	(1.8		)		(1.8		)
OBH Senior Notes, carrying value	273.2				273.2
OneBeacon Bank Facility	—			N/A	—			N/A
MediaAlpha Bank Facility	11.7			6.1%	12.9			5.7%
Unamortized issuance cost	(.2		)		(.2		)
MediaAlpha Bank Facility, carrying value	11.5				12.7
Total debt	$	284.7			$	285.9

 ⁽¹⁾ Effective rate considers the effect of the debt issuance costs.