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Fair value measurements
3 Months Ended
Mar. 31, 2022
Fair Value Disclosures [Abstract]  
Fair value measurements Fair value measurements
The table below presents information about the Company's assets and liabilities that are regularly measured and carried at fair value and indicate the level within the fair value hierarchy of the valuation techniques we utilized to determine fair value:
March 31, 2022
December 31, 2021
TotalLevel 1Level 2Level 3TotalLevel 1Level 2Level 3
Assets:
Money market accounts$7.4 7.4 — $— $152.4 152.4 — $— 
Time deposits250.2 — 250.2 — 200.0 — 200.0 — 
Derivative instruments2.5 — 2.5 — — — — — 
Total$260.1 7.4 252.7 $— $352.4 152.4 200.0 $— 
Liabilities:
Contingent consideration$7.6 — — $7.6 $37.2 — — $37.2 
Derivative instruments— — — — 6.1 — 6.1 — 
Total$7.6 — — $7.6 $43.3 — 6.1 $37.2 
Contingent consideration
Contingent consideration liabilities associated with business combinations are measured at fair value. These liabilities represent an obligation of the Company to transfer additional assets to the selling shareholders and owners if future events occur or conditions are met. These liabilities associated with business combinations are measured at fair value at inception and at each subsequent reporting date. The changes in the fair value are primarily due to the expected amount and timing of future net sales, which are inputs that have no observable market. Any changes in fair value for the contingent consideration liabilities related to the Company’s products are classified in the Company's statement of operations as cost of product sales.
The following table is a reconciliation of the beginning and ending balance of contingent considerations.
 
Balance at December 31, 2021$37.2 
Change in fair value0.5 
Settlements(30.1)
Balance at March 31, 2022$7.6 
As of March 31, 2022 and December 31, 2021, the current portion of the contingent consideration liability was $3.2 million and $32.7 million, respectively, and was included in other current liabilities on the condensed consolidated balance sheets.
The recurring Level 3 fair value measurements for the Company's contingent consideration liability include the following significant unobservable inputs:
Contingent Consideration Liability
Fair Value as of March 31, 2022
Valuation TechniqueUnobservable InputRangeWeighted Average
Revenue milestone and royalty based$7.6 millionDiscounted cash flowDiscount rate
8.3%
8.3%
Probability of payment
25% - 50%
37.7%
Projected year of payment2022 - 20282024
Derivative instruments
Refer to Note 8, Derivative instruments and hedging activities, to these condensed consolidated financial statements.
Non-variable rate debt
As of March 31, 2022 and December 31, 2021, the fair value of the Company's 3.875% Senior Unsecured Notes was $403.7 million and $433.3 million. The fair value was determined through market sources, which are level 2 inputs and directly observable. The carrying amounts of the Company’s other long-term variable interest rate debt arrangements approximate their fair values (see Note 9, Debt).