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Fair Value Measurements
9 Months Ended
Sep. 30, 2023
Fair Value Disclosures [Abstract]  
Fair Value Measurements Fair Value Measurements
The following fair value hierarchy is used to classify assets and liabilities based on observable inputs and unobservable inputs used in order to determine the fair value of our financial assets and liabilities:
Level 1:
Quoted prices in active markets for identical assets or liabilities. An active market for an asset or liability is a market in which transactions for the asset or liability occur with sufficient frequency and volume to provide pricing information on an ongoing basis.
Level 2:
Observable inputs other than Level 1 inputs. Examples of Level 2 inputs include quoted prices in active markets for similar assets or liabilities and quoted prices for identical assets or liabilities in markets that are not active.
Level 3:
Unobservable inputs based on our assessment of the assumptions that market participants would use in pricing the asset or liability.
Our investment strategy is focused on capital preservation. We invest in instruments that meet the credit quality standards outlined in our investment policy, which also limits the amount of credit exposure to any one issue or type of instrument. We maintain strategic equity investments separately from the investment policy that governs our other cash, cash equivalents and marketable securities as described in Note F, “Marketable Securities and Equity Investments.” Additionally, we utilize foreign currency forward contracts intended to mitigate the effect of changes in foreign exchange rates on our condensed consolidated statement of income.
The following tables set forth our financial assets and liabilities subject to fair value measurements by level within the fair value hierarchy (and does not include $5.5 billion and $3.1 billion of cash as of September 30, 2023 and December 31, 2022, respectively):
As of September 30, 2023As of December 31, 2022
Total
Level 1
Level 2
Level 3
Total
Level 1
Level 2
Level 3
(in millions)
Financial instruments carried at fair value (asset positions):
Cash equivalents:
Money market funds$3,753.4 $3,753.4 $— $— $5,162.6 $5,162.6 $— $— 
Time deposits1,550.0 — 1,550.0 — 2,000.0 — 2,000.0 — 
U.S. Treasury securities236.8 236.8 — — — — — — 
Corporate debt securities— — — — 5.8 — 5.8 — 
Commercial paper96.5 — 96.5 — 204.5 — 204.5 — 
Marketable securities:
Corporate equity securities46.4 46.4 — — 116.8 88.8 28.0 — 
U.S. Treasury securities408.2 408.2 — — — — — — 
Government-sponsored enterprise securities421.0 421.0 — — 127.1 127.1 — — 
Asset-backed securities237.8 — 237.8 — — — — — 
Certificates of deposit31.7 — 31.7 — — — — — 
Corporate debt securities1,214.2 — 1,214.2 — 87.0 — 87.0 — 
Commercial paper158.7 — 158.7 — 55.8 — 55.8 — 
Prepaid expenses and other current assets:
Foreign currency forward contracts37.8 — 37.8 — 47.5 — 47.5 — 
Other assets:
Foreign currency forward contracts3.4 — 3.4 — 0.8 — 0.8 — 
Total financial assets
$8,195.9 $4,865.8 $3,330.1 $— $7,807.9 $5,378.5 $2,429.4 $— 
Financial instruments carried at fair value (liability positions):
Other current liabilities:
Foreign currency forward contracts
$(0.7)$— $(0.7)$— $(14.3)$— $(14.3)$— 
Contingent consideration(15.0)— — (15.0)(14.6)— — (14.6)
Other long-term liabilities:
Foreign currency forward contracts— — — — (0.9)— (0.9)— 
Contingent consideration(112.7)— — (112.7)(114.4)— — (114.4)
Total financial liabilities
$(128.4)$— $(0.7)$(127.7)$(144.2)$— $(15.2)$(129.0)
Please refer to Note F, “Marketable Securities and Equity Investments,” for the carrying amount and related unrealized gains (losses) by type of investment.
Fair Value of Corporate Equity Securities
We classify our investments in publicly traded corporate equity securities as “Marketable securities” on our condensed consolidated balance sheets. Generally, our investments in the common stock of publicly traded companies are valued based on Level 1 inputs because they have readily determinable fair values. However, certain of our investments in publicly traded companies have been or continue to be valued based on Level 2 inputs due to transfer restrictions associated with these investments.
As of September 30, 2023, one of our investments in publicly traded corporate equity securities was subject to a contractual sales restriction expiring partially in 2024 and partially in 2025 with a total fair value of $25.5 million. We purchased this investment directly from the publicly traded company in the first quarter of 2023, and do not anticipate any circumstances that would cause this restriction to lapse prior to the periods listed above.
Please refer to Note F, “Marketable Securities and Equity Investments,” for further information on these investments.
Fair Value of Contingent Consideration
In 2019, we acquired Exonics Therapeutics, Inc. (“Exonics”), a privately-held company focused on creating transformative gene-editing therapies to repair mutations that cause Duchenne muscular dystrophy (“DMD”) and other severe neuromuscular diseases, including DM1. Our Level 3 contingent consideration liabilities are related to $678.3 million of development and regulatory milestones potentially payable to former Exonics equity holders. We base our estimates of the probability of achieving the milestones relevant to the fair value of contingent payments, which could include milestone, royalty and option payments, on industry data attributable to rare diseases and our knowledge of the progress and viability of the programs. The discount rates used in the valuation model for contingent payments, which were between 5.5% and 6.5% as of September 30, 2023, represent a measure of credit risk and market risk associated with settling the liabilities. Significant judgment is used in determining the appropriateness of these assumptions at each reporting period.
The following table represents a rollforward of the fair value of our contingent consideration liabilities:
Nine Months Ended September 30, 2023
(in millions)
Balance at December 31, 2022$129.0 
Decrease in fair value of contingent payments
(1.3)
Balance at September 30, 2023$127.7 
In November 2023, we determined that additional pre-clinical studies of the delivery system for our gene-editing components for DMD will be required. Any potential impact on the fair value of our contingent consideration liabilities will be recognized as of December 31, 2023.