Business Segment Information - Property And Equipment Net Of Accumulated Depreciation By Geographic Location (Details) - USD ($) $ in Thousands	Dec. 31, 2018	Dec. 31, 2017
Segment Reporting Information [Line Items]
Property and equipment, net	$ 1,826,745	$ 1,805,989
United States
Segment Reporting Information [Line Items]
Property and equipment, net	862,334	894,680
United Kingdom
Segment Reporting Information [Line Items]
Property and equipment, net	236,512	270,499
Brazil
Segment Reporting Information [Line Items]
Property and equipment, net	324,083	334,454
Singapore
Segment Reporting Information [Line Items]
Property and equipment, net	403,816	295,798
Other
Segment Reporting Information [Line Items]
Property and equipment, net	$ 0	$ 10,558