Fair Value (Tables)

6 Months Ended

Jun. 30, 2023

The fair value (in millions) of our financial assets and (liabilities) was determined using the following inputs:


Fair Value at June 30, 2023	Level 1		Level 2		Level 3
Measured on a recurring basis:
Assets:
Cash equivalents:
Corporate debt securities	$	—	$	231.2	$	—
Money market mutual funds	$	173.5	$	—	$	—

Short-term investments:
Corporate debt securities	$	—	$	99.9	$	—
Securities guaranteed by U.S. government	$	—	$	28.5	$	—
Other governmental securities	$	—	$	22.2	$	—
Prepaid expenses and other current assets:
Interest rate cap contract	$	—	$	1.4	$	—
Interest rate swap contracts	$	—	$	23.7	$	—

Deferred costs and other assets, net of current portion

Interest rate swap contracts	$	—	$	26.0	$	—


Fair Value at December 31, 2022	Level 1		Level 2		Level 3
Measured on a recurring basis:
Assets:
Cash equivalents:
Corporate debt securities	$	—	$	159.8	$	—
Money market mutual funds	$	18.6	$	—	$	—
Securities guaranteed by U.S. government	$	—	$	4.0	$	—
Short-term investments:
Corporate debt securities	$	—	$	91.7	$	—
Securities guaranteed by U.S. government	$	—	$	25.0	$	—
Other governmental securities	$	—	$	11.0	$	—
Prepaid expenses and other current assets:
Interest rate cap contract	$	—	$	1.2	$	—
Interest rate swap contracts	$	—	$	21.5	$	—
Deferred costs and other assets, net of current portion
Interest rate cap contract	$	—	$	0.3	$	—
Interest rate swap contracts	$	—	$	30.3	$	—