XML 48 R68.htm IDEA: XBRL DOCUMENT v3.19.3
Segments - Summary of Geographic Information (Detail) - USD ($)
$ in Thousands
3 Months Ended 9 Months Ended
Sep. 30, 2019
Sep. 30, 2018
Sep. 30, 2019
Sep. 30, 2018
Revenues From External Customers And Long Lived Assets [Line Items]        
Revenue $ 5,925,101 $ 5,260,954 $ 16,774,684 $ 15,046,340
United States [Member]        
Revenues From External Customers And Long Lived Assets [Line Items]        
Revenue 3,442,570 3,063,616 9,851,477 8,646,018
United Kingdom [Member]        
Revenues From External Customers And Long Lived Assets [Line Items]        
Revenue 758,084 638,018 2,003,671 1,852,799
All other countries [Member]        
Revenues From External Customers And Long Lived Assets [Line Items]        
Revenue $ 1,724,447 $ 1,559,320 $ 4,919,536 $ 4,547,523