Segment Reporting and Information about Geographic Areas - Schedule of Revenues by Geographic Area (Detail) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2018	Sep. 30, 2017	Sep. 30, 2018	Sep. 30, 2017
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenues	$ 6,824,413	$ 2,984,675	$ 14,235,395	$ 8,470,502
United States [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenues	5,132,948	1,582,143	9,248,776	4,380,393
China [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenues	409,300	563,561	1,445,232	1,531,082
Netherlands [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenues	273,750	67,037	626,835	264,186
Norway [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenues	224,481	225,461	611,222	482,965
Other [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenues	$ 783,934	$ 546,473	$ 2,303,330	$ 1,811,876