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Fair Value Measurements - (Tables)
9 Months Ended
Sep. 30, 2023
Fair Value Disclosures [Abstract]  
Fair Value Option, Disclosures
The fair value of our debt is included in the following table:
September 30, 2023December 31, 2022
2014 Notes, maturing 2025, fixed interest rate$262.6 $263.1 
2020 Notes, maturing 2028, fixed interest rate234.4 241.2 
$497.0 $504.3