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Share Repurchase Program and Treasury Stock (Details) - USD ($) $ / shares in Units, $ in Thousands | 3 Months Ended | 12 Months Ended
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Mar. 31, 2021 | Mar. 31, 2020 | Dec. 31, 2020
Stock Repurchase Program, Additional Authorized Amount |  |  | $ 2,500,000
Share Repurchase Program and Treasury Stock (Textuals) [Abstract] |  |  |
Authorized amount under share repurchase program | $ 2,800,000 |  |
Shares Purchased Under Share Repurchase Program | 29,700,000 |  |
Repurchases of common stock | $ (262,500) | $ (200,000) |
Number of shares repurchased | (224,808) | (268,161) |
Average price of share repurchased, per share | $ 1,167.64 | $ 745.80 |
Exercise of stock options and restricted stock units, shares reissued | 22,388 | 50,372 |

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- Definition Number of treasury shares reissued during the period as a result of the exercise of stock options and vesting of restricted stock units. + References No definition available. + Details
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- Definition Share Repurchase Program and Treasury Stock. + References No definition available. + Details
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- Definition Shares repurchased program-to-date by a Company's share repurchase program. + References No definition available. + Details
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- Definition The additional amount authorized by an entity's Board of Directors under a stock repurchase program. + References No definition available. + Details
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- Definition Total cost of shares repurchased divided by the total number of shares repurchased. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 30 -Section 45 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6405813&loc=d3e23239-112655 + Details
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