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Stock-Based Compensation (Tables)

6 Months Ended

Jun. 30, 2022

Share-Based Payment Arrangement [Abstract]

Schedule of RSUs and PSUs to be Settled in Common Stock Activity

A summary of the activity for RSUs to be settled in common stock for the six months ended June 30, 2022 and 2021 is as follows (RSUs in thousands):

			2022												2021
			RSUs						Weighted Average Grant Date Fair Value (Per Unit)						RSUs						Weighted Average Grant Date Fair Value (Per Unit)
Unvested at January 1			3,880						$61.64						3,869						$37.57
Granted			801						$110.73						929						$82.57
Vested			(1,200)						$48.96						(1,375)						$36.85
Forfeited			(98)						$77.41						(85)						$44.60
Unvested at June 30			3,383						$77.47						3,338						$50.26

A summary of the activity for PSUs to be settled in common stock for the six months ended June 30, 2022 and 2021 is as follows (PSUs in thousands):

			2022												2021
			PSUs						Weighted Average Grant Date Fair Value (Per Unit)						PSUs						Weighted Average Grant Date Fair Value (Per Unit)
Unvested at January 1			931						$47.27						1,047						$37.65
Granted			148						$119.04						174						$90.44
Vested			(334)						$40.15						(268)						$38.28
Forfeited			(17)						$58.79						(11)						$36.90
Unvested at June 30			728						$64.83						942						$47.27

Grant Date Fair Value for Awards of Performance Units Inputs

The Monte Carlo simulation valuation methodology applied the following key inputs:

						2022						2021
Valuation date price based on March 2, 2022 and March 25, 2021 closing stock prices of Quanta common stock						$110.24						$83.48
Expected volatility						39		%				36		%
Risk-free interest rate						1.64		%				0.26		%
Term in years						2.83						2.77

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Schedule Of Share Based Payment Award, Equity Instruments Other Than Options, Valuation Assumptions [Table Text Block]

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- Definition

Tabular disclosure of the changes in outstanding nonvested shares.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (c)(2)
-URI https://asc.fasb.org/extlink&oid=128089324&loc=d3e5070-113901

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