XML 54 R42.htm IDEA: XBRL DOCUMENT v3.21.1
Investments in Unconsolidated Subsidiaries - Schedule of Condensed Financial Information of Equity Method Investments (Detail) - USD ($)
$ in Thousands
3 Months Ended
Mar. 31, 2021
Mar. 31, 2020
Schedule of Equity Method Investments [Line Items]    
Revenue $ 5,938,879 $ 5,889,168
Operating income 269,084 220,290
Net income 268,977 173,530
Equity Method Investment, Nonconsolidated Investee or Group of Investees    
Schedule of Equity Method Investments [Line Items]    
Revenue 555,856 411,251
Operating income 275,462 174,534
Net income $ 368,217 $ 104,528