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Fair Value Measurements (Tables)
12 Months Ended
Dec. 31, 2021
Fair Value Disclosures [Abstract]  
Other Fair Value Measurements The following table presents the fair value for our senior unsecured notes in Long-term debt (in millions):
As of December 31,
20212020
Quoted Prices in Active Markets for Similar Instruments (Level 2):
Senior unsecured notes$959.2 $971.6