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Fair Value of Financial Instruments
12 Months Ended
Dec. 31, 2019
Fair Value Disclosures [Abstract]  
Fair Value of Financial Instruments Fair Value of Financial Instruments

White Mountains records its financial instruments at fair value with the exception of debt obligations which are recorded as debt at face value less unamortized original issue discount.
The following tables presents the fair value and carrying value of these financial instruments as of December 31, 2019 and 2018:
 
 
December 31, 2019
 
December 31, 2018
Millions
 
Fair Value
 
Carrying Value
 
Fair Value
 
Carrying Value
NSM Bank Facility
 
$
221.2

 
$
217.4

 
$
176.1

 
$
176.6

Other NSM debt
 
$
1.7

 
$
1.8

 
$
1.9

 
$
1.9

Kudu Bank Facility (1)
 
$
53.6

 
$
53.6

 
$

 
$

MediaAlpha Bank Facility
 
$

 
$

 
$
14.6

 
$
14.2

Other Operations debt
 
$
11.3

 
$
10.7

 
$

 
$


(1) White Mountains measured the fair value of the Kudu Bank Facility debt at the carrying value as a result of the debt being acquired on December 23, 2019. See Note 5 — “Debt”.

The fair value estimates for the NSM Bank Facility, the MediaAlpha Bank Facility and Other Operations debt have been determined based on a discounted cash flow approach and are considered to be Level 3 measurements. As a result of the MediaAlpha Transaction, White Mountains’s remaining ownership interest in MediaAlpha no longer meets the criteria for a controlling ownership interest and accordingly, White Mountains deconsolidated MediaAlpha as of February 26, 2019. See Note 2 — “Significant Transactions”.