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Fair Value of Financial Instruments (Tables)
12 Months Ended
Dec. 31, 2022
Fair Value Disclosures [Abstract]  
Schedule of the fair value and carrying value of financial instruments The following table presents the fair value and carrying value of these financial instruments as of December 31, 2022 and 2021:
December 31, 2022December 31, 2021
MillionsFair ValueCarrying ValueFair ValueCarrying Value
HG Global Senior Notes$155.7 $146.5 $— $— 
Ark 2007 Subordinated Notes$28.4 $30.0 $27.6 $30.0 
Ark 2021 Subordinated Notes$163.1 $153.7 $162.8 $155.9 
Kudu Credit Facility$223.9 $208.3 $246.8 $218.2 
Other Operations debt$38.2 $36.7 $17.7 $16.8