Segment Information - Revenues by Geographic Area (Detail) - USD ($) $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 31, 2019	Sep. 30, 2019	Jun. 30, 2019	Mar. 31, 2019	Dec. 31, 2018	Sep. 30, 2018	Jun. 30, 2018	Mar. 31, 2018	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Segment Reporting, Revenue Reconciling Item [Line Items]
Revenues	$ 1,473,705	$ 1,481,557	$ 860,063	$ 689,246	$ 1,524,281	$ 1,437,451	$ 844,706	$ 708,372	$ 4,504,571	$ 4,514,810	$ 4,881,493
United States
Segment Reporting, Revenue Reconciling Item [Line Items]
Revenues									2,540,000	2,600,000	2,820,000
Operating Segments
Segment Reporting, Revenue Reconciling Item [Line Items]
Revenues									5,064,574	5,075,529	5,514,125
Sales adjustments
Segment Reporting, Revenue Reconciling Item [Line Items]
Revenues									(560,003)	(560,719)	(632,632)
North American Region | Operating Segments
Segment Reporting, Revenue Reconciling Item [Line Items]
Revenues									2,700,788	2,763,299	3,010,598
International Region | Operating Segments
Segment Reporting, Revenue Reconciling Item [Line Items]
Revenues									2,363,786	2,312,230	2,503,527
International Region | Operating Segments | EMEA
Segment Reporting, Revenue Reconciling Item [Line Items]
Revenues									1,292,948	1,252,424	1,281,671
International Region | Operating Segments | Latin America
Segment Reporting, Revenue Reconciling Item [Line Items]
Revenues									666,102	653,992	675,286
International Region | Operating Segments | Asia Pacific
Segment Reporting, Revenue Reconciling Item [Line Items]
Revenues									$ 404,736	$ 405,814	$ 546,570