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Investments in Unconsolidated Subsidiaries - Schedule of Condensed Financial Information of Equity Method Investments (Detail) - USD ($)
$ in Thousands
 12 Months Ended
Dec. 31, 2019
Dec. 31, 2018
Dec. 31, 2017
Equity Method Investments And Joint Ventures [Abstract]      
Current assets $ 5,407,082 $ 3,931,111  
Non-current assets 20,414,598 16,578,905  
Total assets 25,821,680 20,510,016  
Current liabilities 2,241,930 1,919,955  
Non-current liabilities 5,857,413 4,495,117  
Total liabilities 8,099,343 6,415,072  
Non-controlling interests 461,018 261,654  
Revenue 1,545,424 1,524,685 $ 1,392,590
Operating income 549,111 906,889 1,425,824
Net income $ 419,966 $ 679,712 $ 1,254,345