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Stockholders' Equity (Narrative) (Details) - USD ($) shares in Thousands, $ in Millions | 6 Months Ended |
--- | --- | ---
Jun. 30, 2024 | Jun. 30, 2023 | Dec. 31, 2013
Equity [Abstract] |  |  |
Stock repurchase program, authorized amount (up to) |  |  | $ 8,100.0
Number of shares purchased (in shares) | 0 | 723 |
Treasury stock value acquired |  | $ 146.1 |
Remaining authorized repurchase amount | $ 802.0 |  |

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