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Stockholders' Equity

6 Months Ended

Jun. 30, 2021

Share-based Payment Arrangement [Abstract]

Stockholders' Equity

7. Stockholders’ Equity

Share-Based Compensation

Our share-based compensation expense is associated with restricted stock units, or RSUs, performance stock units, or PSUs, and our Employee Stock Purchase Plan, or ESPP. The following table summarizes our share-based compensation expense included in our consolidated statements of operations for the periods shown.

			Three Months Ended June 30,												Six Months Ended June 30,
(In millions)			2021						2020						2021						2020
Cost of sales			$	2.6					$	4.1					$	4.6					$	6.0
Research and development			11.1						9.8						21.5						18.0
Selling, general and administrative			17.9						16.8						33.5						30.6
Total share-based compensation expense			$	31.6					$	30.7					$	59.6					$	54.6

At June 30, 2021, unrecognized estimated compensation costs related to RSUs, PSUs and ESPP totaled $210.9 million and is expected to be recognized through 2024.

Equity Award Activity

The total vest date fair value of RSUs and PSUs that vested during the six months ended June 30, 2021 was $198.6 million and $29.5 million, respectively.

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- Definition

The entire disclosure for share-based payment arrangement.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-URI http://asc.fasb.org/topic&trid=2228938

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- References

No definition available.

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