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Fair Value Measurement (Tables)
3 Months Ended
Mar. 31, 2023
Fair Value Disclosures [Abstract]  
Schedule of Carrying Values and Estimated Fair Values
The following table presents the carrying amounts and estimated fair values of the financial instruments that are not recorded at fair value on the condensed balance sheets (in millions):
March 31, 2023
Net Carrying AmountEstimated Fair Value
2025 Convertible senior notes$169.6 $157.4 
2028 Convertible senior notes$280.9 $231.4