Consolidated Balance Sheets (Parenthetical) - USD ($) shares in Millions, $ in Millions	Dec. 31, 2024	Dec. 31, 2023
Consolidated Balance Sheets
Allowance for doubtful accounts	$ 66.5	$ 68.4
Class A Common Stock, par value (in dollars per share)	$ 0.001	$ 0.001
Class A Common Stock, shares authorized	2,000.0	2,000.0
Class A Common Stock, shares issued	1,212.9	1,201.3
Class A Common Stock, shares outstanding	1,209.3	1,197.8
Treasury stock, shares	3.6	3.5