XML 14 R3.htm IDEA: XBRL DOCUMENT v3.8.0.1
Consolidated Balance Sheets (Unaudited) (Parenthetical) - USD ($)
$ in Thousands
Mar. 31, 2018
Dec. 31, 2017
Statement Of Financial Position [Abstract]    
Receivables, allowance for doubtful accounts $ 52,960 $ 46,789
Other intangible assets, accumulated amortization $ 1,066,355 $ 1,000,738
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 339,737,454 339,459,138
Class A common stock, shares outstanding 339,737,454 339,459,138