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CONSOLIDATED BALANCE SHEETS (Unaudited) (Parenthetical) - USD ($)
$ in Millions
Mar. 31, 2024
Dec. 31, 2023
Statement of Financial Position [Abstract]    
Receivables, less allowance for doubtful accounts $ 100.3 $ 102.0
Accumulated depreciation and amortization 1,634.6 1,576.1
Other intangible assets, accumulated amortization 2,243.2 2,178.9
Investments in unconsolidated subsidiaries $ 901.7 $ 997.3
Class A common stock, par value (in dollars per share) $ 0.01 $ 0.01
Class A common stock, shares authorized (in shares) 525,000,000 525,000,000
Class A common stock, shares issued (in shares) 306,949,267 304,889,140
Class A common stock, shares outstanding (in shares) 306,949,267 304,889,140