Debt (Tables)

6 Months Ended

Jun. 30, 2014

Debt Disclosure [Abstract]

Schedule of debt outstanding

White Mountains’s debt outstanding as of June 30, 2014 and December 31, 2013 consisted of the following:

Millions	June 30, 2014			December 31, 2013
2012 OBH Senior Notes, at face value	$	275.0		$	275.0
Unamortized original issue discount	(.3		)	(.3		)
2012 OBH Senior Notes, carrying value	274.7			274.7
SIG Senior Notes, at face value	400.0			400.0
Unamortized original issue discount	(.4		)	(.4		)
SIG Senior Notes, carrying value	399.6			399.6
WTM Bank Facility	—			—
Old Lyme Note	2.1			2.1
Other	1.1			—
Total debt	$	677.5		$	676.4