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Stockholders' Equity Treasury Shares (Details) - USD ($) $ / shares in Units, $ in Millions	1 Months Ended										12 Months Ended
	Aug. 31, 2024	Jul. 31, 2024	Jun. 30, 2024	May 31, 2024	Mar. 31, 2024	Nov. 30, 2023	Sep. 30, 2023	May 31, 2023	Nov. 30, 2022	May 31, 2022	Dec. 31, 2024	Dec. 31, 2023
Equity, Class of Treasury Stock [Line Items]
Treasury stock (in shares)	3,118,389	3,116,179	2,788,008	2,663,675	2,441,782,000,000	2,427,532	1,768,116	1,709,638	1,159,775	918,367	2,254,728	1,747,438
Share Repurchase Program, Remaining Authorized, Amount	$ 577.1	$ 577.8	$ 174.0	$ 209.7	$ 274.0	$ 278.7	$ 478.7	$ 0.0	$ 207.4	$ 98.1	$ 577.1
Share Repurchase Program, Authorized, Amount											500.0
Treasury Stock, Shares, Acquired	2,210	328,171	124,333	221,893	14,250	659,416	58,478	549,863	241,408	255,284
Treasury Stock Acquired, Average Cost Per Share	$ 321.73	$ 293.01	$ 287.29	$ 289.69	$ 329.98	$ 303.30	$ 364.61	$ 377.20	$ 375.63	$ 489.65
Stock Repurchase Program Total Repurchased Amount											$ 1,072.9
Treasury Class-A [Member]
Equity, Class of Treasury Stock [Line Items]
Stock Issued During Period, Shares, Treasury Stock Reissued											(183,567)	(160,811)

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