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Shareholders' Equity (Narrative) (Details) - USD ($) $ in Thousands, shares in Millions | 12 Months Ended
--- | ---
Dec. 31, 2021 | Dec. 31, 2020 | Dec. 31, 2019
Class of Stock [Line Items] |  |  |
Dividends declared | $ (148,133) | $ (135,138) | $ (124,356)
Stock repurchases | $ 897,303 | $ 170,676 | $ 274,333
Share repurchase plan [Member] |  |  |
Class of Stock [Line Items] |  |  |
Shares repurchased under authorized repurchase programs | 17.7 | 4.5 | 8.4
Stock repurchases | $ 897,300 | $ 170,700 | $ 274,300
Remaining value of stock repurchase programs authorization | 457,600 |  |
Shares withheld to pay taxes [Member] |  |  |
Class of Stock [Line Items] |  |  |
Stock repurchases | $ 10,800 | $ 14,900 | $ 11,500

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