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Fair Value Measurements - (Tables)
 3 Months Ended
Mar. 31, 2023
Fair Value Disclosures [Abstract]  
Summary of Fair Value Available-for-sale Securities The following table summarizes the Company's financial assets and liabilities, excluding pension assets, disaggregated by the security type, measured at fair value on a recurring basis (in millions):
As of March 31, 2023Fair Value Level
DescriptionAmortized CostUnrealized gainsUnrealized lossesFair valueLevel 1Level 2Level 3
Assets:
Cash and cash equivalents:
Demand and time deposits$371.4 $— $— $371.4 $371.4 $— $— 
Money market funds28.4 — — 28.4 28.4 — — 
Other current assets:
Corporate bonds$15.2 $— $— $15.2 $— $15.2 $— 
Certificate of deposit2.7 — — 2.7 — 2.7 — 
Commercial paper2.2 — — 2.2 0.2 2.0 — 
US Treasury bonds1.7 — — 1.7 — 1.7 — 
Other assets:
Corporate bonds$0.5 $— $— $0.5 $— $0.5 $— 

The investments included in other assets have maturity dates ranging between one and five years.


As of December 31, 2022Fair Value Level
DescriptionAmortized CostUnrealized gainsUnrealized lossesFair valueLevel 1Level 2Level 3
Assets:
Cash and cash equivalents:
Demand and time deposits$233.1 $— $— $233.1 $233.1 $— $— 
Money market funds17.0 — — 17.0 17.0 — — 
Other current assets:
Corporate bonds$23.8 $— $— $23.8 $— $23.8 $— 
Certificate of deposit3.1 — — 3.1 — 3.1 — 
Commercial paper3.2 — — 3.2 1.2 2.0 — 
US Treasury bonds2.1 — — 2.1 — 2.1 — 
Other assets:
Corporate bonds$0.8 $— $— $0.8 $— $0.8 $— 
Summary of Fair Value, by Balance Sheet Grouping
The carrying amounts and fair values of the Company’s long-term borrowings were as follows (in millions):
As of
 March 31, 2023December 31, 2022
 Carrying
Amount		Fair ValueCarrying
Amount		Fair Value
Long-term debt, including current portion (1)
0% Notes
$791.9 $1,306.2 $791.1 $1,057.8 
0.50% Notes
1,469.3 1,572.8 — — 
1.625% Notes
134.4 517.6 137.0 417.8 
3.875% Notes
693.6 641.1 693.3 618.3 
Other long-term debt375.0 377.0 1,572.1 1,549.2 

(1)    Carrying amounts shown are net of debt discount, if applicable, and debt issuance costs.