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Investments	12 Months Ended
	Dec. 31, 2020
Investments, Debt and Equity Securities [Abstract]
Investments	INVESTMENTS Cash and cash equivalents include investments in money market funds that are valued based on the net asset value of the funds. The investments in these funds were $170.4 million and $99.2 million as of December 31, 2020 and 2019, respectively. All other investments are classified as held-to-maturity and consist of highly liquid instruments including primarily corporate bonds and commercial paper. As of December 31, 2019, the amortized cost of these investments equaled the net carrying value, which was $38.0 million. There were no held-to-maturity securities as of December 31, 2020. See Note 10, Fair Value Measurements, for additional information.

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- Definition

The entire disclosure for investments in certain debt and equity securities.

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