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CONSOLIDATED STATEMENT OF CHANGES IN STOCKHOLDERS' EQUITY (Parenthetical) - USD ($) shares in Thousands, $ in Thousands | 12 Months Ended
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Dec. 31, 2021 | Dec. 31, 2019
Statement Of Stockholders Equity [Abstract] |  |  |  |
Repurchased and retired common stock, shares | 27,500 |  | 500 |
Repurchased and retired common stock | $ 1,748,051 | [1] | $ 7,942 | [2]
Average price of common shares repurchased and retired | $ 63.63 |  | $ 17.24 |
[1] | During the year ended December 31, 2021, we repurchased and retired 27.5 million shares of our common stock at an average price of $63.63 per share, for $1,748.1 million, net of fees, pursuant to the repurchase program authorized by our board of directors in August 2021, and further expanded by our board of directors in November 2021. The primary purpose of the repurchase program was to offset dilution from the BMC Merger.
[2] | During the year ended December 31, 2019, we repurchased and retired 0.5 million shares of our common stock, at an average price of $17.24 per share, for $7.9 million pursuant to the repurchase program authorized by our board of directors in February 2019. The primary purpose of the repurchase program was to offset dilution from employee stock awards.

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