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Revenues - Information about Operations in Different Geographic Areas (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Segment Reporting Information [Line Items]
Net sales	$ 4,540,029	$ 5,158,557	$ 4,845,872
United States
Segment Reporting Information [Line Items]
Net sales	2,330,126	2,683,686	2,397,332
United Kingdom
Segment Reporting Information [Line Items]
Net sales	171,627	196,908	196,590
European Union countries
Segment Reporting Information [Line Items]
Net sales	696,087	826,355	788,579
Asia
Segment Reporting Information [Line Items]
Net sales	959,519	959,569	985,182
Other foreign countries
Segment Reporting Information [Line Items]
Net sales	382,670	492,039	478,189
International
Segment Reporting Information [Line Items]
Net sales	2,209,903	2,474,871	2,448,540
Non-US
Segment Reporting Information [Line Items]
Net sales	1,196,400	1,306,200	1,269,400
EIG
Segment Reporting Information [Line Items]
Net sales	2,989,928	3,322,881	3,028,959
EIG | United States
Segment Reporting Information [Line Items]
Net sales	1,513,967	1,685,369	1,446,974
EIG | United Kingdom
Segment Reporting Information [Line Items]
Net sales	54,158	64,423	61,513
EIG | European Union countries
Segment Reporting Information [Line Items]
Net sales	371,884	434,072	389,032
EIG | Asia
Segment Reporting Information [Line Items]
Net sales	769,532	773,034	780,135
EIG | Other foreign countries
Segment Reporting Information [Line Items]
Net sales	280,387	365,983	351,305
EIG | International
Segment Reporting Information [Line Items]
Net sales	1,475,961	1,637,512	1,581,985
EMG
Segment Reporting Information [Line Items]
Net sales	1,550,101	1,835,676	1,816,913
EMG | United States
Segment Reporting Information [Line Items]
Net sales	816,159	998,317	950,358
EMG | United Kingdom
Segment Reporting Information [Line Items]
Net sales	117,469	132,485	135,077
EMG | European Union countries
Segment Reporting Information [Line Items]
Net sales	324,203	392,283	399,547
EMG | Asia
Segment Reporting Information [Line Items]
Net sales	189,987	186,535	205,047
EMG | Other foreign countries
Segment Reporting Information [Line Items]
Net sales	102,283	126,056	126,884
EMG | International
Segment Reporting Information [Line Items]
Net sales	$ 733,942	$ 837,359	$ 866,555

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