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Consolidated Balance Sheets (Unaudited) (Parenthetical) - USD ($)
$ in Thousands
Mar. 31, 2020
Dec. 31, 2019
Statement Of Financial Position [Abstract]    
Receivables, allowance for doubtful accounts $ 80,543 $ 72,725
Other intangible assets, accumulated amortization $ 1,390,807 $ 1,358,528
Class A common stock, par value $ 0.01 $ 0.01
Class A common stock, shares authorized 525,000,000 525,000,000
Class A common stock, shares issued 335,145,077 334,752,283
Class A common stock, shares outstanding 335,145,077 334,752,283