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Cash, Cash Equivalents, and Short-term Investments (Tables)

9 Months Ended

Sep. 30, 2022

Cash and Cash Equivalents [Abstract]

Schedule of Cash and Cash Equivalents

Cash, cash equivalents, and short-term investments consisted of the following as of September 30, 2022:

(in millions)			Amortized Cost						Unrealized Gains						Unrealized Losses						Estimated Fair Value
Current Assets:
Cash			$	112.8					$	—					$	—					$	112.8
Cash equivalents
Corporate debt securities			151.5						—						—						151.5
Money market mutual funds			142.0						—						—						142.0
Total cash equivalents			293.5						—						—						293.5
Total cash and cash equivalents			406.3						—						—						406.3
Short-term investments:
Corporate debt securities			25.7						—						—						25.7
Securities guaranteed by U.S. government			5.0						—						—						5.0
Other governmental securities			1.7						—						—						1.7
Total short-term investments			32.4						—						—						32.4
Total cash, cash equivalents, and short-term investments			$	438.7					$	—					$	—					$	438.7

Cash, cash equivalents, and short-term investments consisted of the following as of December 31, 2021:

(in millions)			Amortized Cost						Unrealized Gains						Unrealized Losses						Estimated Fair Value
Current Assets:
Cash			$	276.5					$	—					$	—					$	276.5
Cash equivalents
Corporate debt securities			15.7						—						—						15.7
Money market mutual funds			16.1						—						—						16.1
Total cash equivalents			31.8						—						—						31.8
Total cash and cash equivalents			308.3						—						—						308.3
Short-term investments:
Corporate debt securities			18.4						—						—						18.4
Total short-term investments			18.4						—						—						18.4
Total cash, cash equivalents, and short-term investments			$	326.7					$	—					$	—					$	326.7

Refer to Note 10 - Fair Value for further information regarding the fair value of our financial instruments.

Schedule of Short-term Securities

The following table summarizes the cost and estimated fair value of the securities classified as short-term investments based on stated effective maturities as of September 30, 2022 and December 31, 2021:

						September 30, 2022												December 31, 2021
(in millions)						Amortized Cost						Estimated Fair Value						Amortized Cost						Estimated Fair Value
Due within one year						$	32.4					$	32.4					$	18.4					$	18.4
Total						$	32.4					$	32.4					$	18.4					$	18.4

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- Definition

Tabular disclosure of investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale).

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 320
-URI https://asc.fasb.org/topic&trid=2196928

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Tabular disclosure of the components of cash and cash equivalents.

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