XML 120 R107.htm IDEA: XBRL DOCUMENT v3.20.2
Segment, Geographic and Product Information - Product Information Regarding Revenues (Detail) - USD ($)
$ in Thousands
 3 Months Ended 9 Months Ended
Sep. 30, 2020
Sep. 30, 2019
Sep. 30, 2020
Sep. 30, 2019
Segment Reporting Information [Line Items]        
Total revenues $ 455,039 $ 521,137 $ 1,577,294 $ 1,617,075
Rates [Member]        
Segment Reporting Information [Line Items]        
Total revenues 119,325 156,765 419,599 465,335
Credit [Member]        
Segment Reporting Information [Line Items]        
Total revenues 68,053 72,382 261,022 236,275
FX [Member]        
Segment Reporting Information [Line Items]        
Total revenues 73,281 86,492 242,040 289,949
Energy and Commodities [Member]        
Segment Reporting Information [Line Items]        
Total revenues 65,871 73,012 220,935 217,241
Insurance [Member]        
Segment Reporting Information [Line Items]        
Total revenues 43,269 39,692 133,888 112,513
Equities Derivatives and Cash Equities [Member]        
Segment Reporting Information [Line Items]        
Total revenues 47,410 56,958 190,984 191,806
Brokerage [Member]        
Segment Reporting Information [Line Items]        
Total revenues 417,209 485,301 1,468,468 1,513,119
All Other Revenues [Member]        
Segment Reporting Information [Line Items]        
Total revenues $ 37,830 $ 35,836 $ 108,826 $ 103,956