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Shareholders' Equity (Summary of Share Repurchases) (Details) $ / shares in Units, shares in Millions, $ in Millions | 3 Months Ended
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Mar. 31, 2022 USD ($) $ / shares shares
Shareholders' Equity [Abstract] |
Total number of shares purchased (in millions) | shares | 1.3
Average price paid per share | $ / shares | $ 332.00
Total price paid (in millions) | $ | $ 431.6

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