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Share repurchases Share Repurchase Table (Details) - Open Market Purchases - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands | 3 Months Ended | 6 Months Ended
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Jun. 30, 2022 | Jun. 30, 2021 | Jun. 30, 2022 | Jun. 30, 2021
Equity, Class of Treasury Stock [Line Items] |  |  |  |
Repurchase of common stock (in shares) | 3,869 | 2,070 | 5,973 | 5,019
Treasury Stock, Value, Acquired, Cost Method | $ 369,740 | $ 240,897 | $ 603,058 | $ 563,230
Treasury Stock Acquired, Average Cost Per Share | $ 95.56 | $ 116.38 | $ 100.96 | $ 112.21

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