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SHARE REPURCHASE PROGRAM (Schedule of Shares Repurchased) (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands | 3 Months Ended
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Mar. 31, 2021 | Mar. 31, 2020
Share Repurchase Program |  |
Shares repurchased | 1,475 | 1,484
Average price per share | $ 450.65 | $ 386.71
Total investment | $ 664,533 | $ 574,037

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