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Common Stock Repurchase Program
 6 Months Ended
Jun. 30, 2022
Disclosure Common Stock Repurchase Program Additional Information [Abstract]  
Common Stock Repurchase Program Common Stock Repurchase Program
In May 2018, our Board of Directors authorized a plan to repurchase up to $600.0 million of our common stock (“May 2018 Repurchase Program”). As of December 31, 2021, the authorization under the May 2018 Repurchase Program was completed. In May 2021, our Board of Directors authorized a plan to repurchase up to $1.0 billion of our common stock (“May 2021 Repurchase Program”). As of June 30, 2022, we have $449.9 million available for repurchases under the May 2021 Repurchase Program.

Accelerated Share Repurchase Agreements (“ASRs”)

During the six months ended June 30, 2022 and 2021, we entered into ASRs providing for the repurchase of our common stock based on the volume-weighted average price during the term of the agreement, less an agreed upon discount. The following table summarizes the information regarding repurchases of our common stock under ASRs:

Agreement
 Date		Repurchase
 Program		Amount Paid
(in millions)		Completion
Date		Total Shares
Received		Average Price per Share
Q2 2021May 2018$100.0 Q3 2021171,322 $583.70 
Q2 2021May 2021$100.0 Q3 2021161,707 $618.40 
Q2 2022May 2021$200.0 Q2 2022756,502 $264.37 

Open Market Common Stock Repurchases

During the six months ended June 30, 2022, we repurchased on the open market approximately 0.1 million shares of our common stock at an average price of $522.61 per share, including commissions and fees, for an aggregate purchase price of $75.0 million.