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Stockholders' Equity Treasury Shares (Details) - USD ($) $ / shares in Units, $ in Millions | 1 Months Ended | 12 Months Ended
--- | --- | ---
Nov. 30, 2023 | Sep. 30, 2023 | May 31, 2023 | Nov. 30, 2022 | May 31, 2022 | Mar. 31, 2021 | Dec. 31, 2023 | Dec. 31, 2022
Equity, Class of Treasury Stock [Line Items] |  |  |  |  |  |  |  |
Treasury stock (in shares) | 2,427,532 | 1,768,116 | 1,709,638 | 1,159,775 | 918,367 | 663,083 | 1,747,438 | 640,492
Stock Repurchase Program, Remaining Authorized Repurchase Amount | $ 278.7 | $ 478.7 | $ 0.0 | $ 207.4 | $ 98.1 | $ 223.1 | $ 278.7 |
Stock Repurchase Program, Authorized Amount |  |  |  |  |  |  | 500.0 |
Treasury Stock, Shares, Acquired | 659,416 | 58,478 | 549,863 | 241,408 | 255,284 | 89,506 |  |
Treasury Stock Acquired, Average Cost Per Share | $ 303.30 | $ 364.61 | $ 377.20 | $ 375.63 | $ 489.65 | $ 558.60 |  |
Stock Repurchased During Period, Value |  |  |  |  |  |  | $ 650.0 |
Treasury Class-A [Member] |  |  |  |  |  |  |  |
Equity, Class of Treasury Stock [Line Items] |  |  |  |  |  |  |  |
Stock Issued During Period, Shares, Treasury Stock Reissued |  |  |  |  |  |  | (160,811) | (135,744)

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