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Shareholders' Equity Textuals (Details) - USD ($) $ / shares in Units, $ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2020 | Dec. 31, 2019 | Dec. 31, 2018
Common Stock, Number of Shares, Par Value and Other Disclosures [Abstract] |  |  |
Cross Currency Swap interest portion recognized in income | $ 13,800 | $ 3,600 | $ 800
Common Stock, Shares Authorized | 125,000,000 | 125,000,000 |
Common Stock, Par or Stated Value Per Share | $ 0.01 | $ 0.01 |
Common Stock, Voting Rights | one |  |
Common Stock Reserved for Issuance to the Stock Option Plans | 2,797,351 |  |
Preferred Stock, Number of Shares, Par Value and Other Disclosures [Abstract] |  |  |
Preferred Stock, Shares Authorized | 10,000,000 | 10,000,000 |
Preferred Stock, Par Value | $ 0.01 | $ 0.01 |
Stock Repurchase Program, Additional Authorized Amount |  | $ 2,500,000 |
Share Repurchase Program and Treasury Stock [Abstract] |  |  |
Stock Repurchase Program, Remaining Authorized Repurchase Amount | $ 3,100,000 |  |
Shares Repurchased Under Share Repurchase Program | 29,400,000 |  |
Share Repurchase Program, Total Cost Program to Date | $ 5,900,000 |  |
Repurchases of Common Stock, Value | $ (774,998) | $ (774,999) | $ (474,999)
Repurchases of Common Stock, Shares | (815,652) | (1,094,648) | (802,809)
Treasury Stock Acquired, Average Cost Per Share | $ 950.14 | $ 707.97 | $ 591.65
Exercise of stock options and restricted stock units, shares | 162,176 | 298,002 | 183,379
Cross Currency Swap Revaluation Portion Recognized in Earnings | $ 2,300 | $ 4,600 | $ 3,000

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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 Total cost spent on the share repurchase program to date by the Company. + References No definition available. + Details
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