Net Income Per Share - Schedule of Basic and Diluted Net Income Per Share (Details) - USD ($) $ / shares in Units, shares in Millions, $ in Millions	3 Months Ended						9 Months Ended
	Sep. 30, 2025	Jun. 30, 2025	Mar. 31, 2025	Sep. 30, 2024	Jun. 30, 2024	Mar. 31, 2024	Sep. 30, 2025	Sep. 30, 2024
Earnings Per Share, Diluted, by Common Class, Including Two Class Method [Line Items]
Net income - basic and diluted	$ 1,460.0	$ 1,391.6	$ 808.7	$ 1,340.6	$ 1,432.3	$ 722.0	$ 3,660.3	$ 3,494.9
Weighted average shares - basic (in shares)	103.6			108.1			105.1	108.0
Weighted average shares - diluted (in shares)	107.2			116.2			108.9	115.6
Net income per share - basic (in dollars per share)	$ 14.09			$ 12.40			$ 34.83	$ 32.36
Net income per share - diluted (in dollars per share)	$ 13.62			$ 11.54			$ 33.61	$ 30.23
Stock options
Earnings Per Share, Diluted, by Common Class, Including Two Class Method [Line Items]
Effect of dilutive securities (in shares)	1.5			5.3			1.8	5.2
Restricted stock awards and restricted stock units
Earnings Per Share, Diluted, by Common Class, Including Two Class Method [Line Items]
Effect of dilutive securities (in shares)	2.1			2.8			2.0	2.4