Sales Information (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2018	Sep. 30, 2017	Sep. 30, 2018	Sep. 30, 2017
International Long-Lived Assets by Geographic Region [Line Items]
Net sales	$ 1,651,248	$ 1,728,524	$ 4,955,498	$ 4,875,799
U.S.
International Long-Lived Assets by Geographic Region [Line Items]
Net sales	983,377	1,131,723	2,869,848	3,211,278
Americas, excluding U.S.
International Long-Lived Assets by Geographic Region [Line Items]
Net sales	302,412		886,123
Asia Pacific
International Long-Lived Assets by Geographic Region [Line Items]
Net sales	100,448		300,058
EMEA
International Long-Lived Assets by Geographic Region [Line Items]
Net sales	265,011		899,469
Non-U.S.
International Long-Lived Assets by Geographic Region [Line Items]
Net sales	667,871	596,801	2,085,650	1,664,521
Non-U.S. | Americas, excluding U.S.
International Long-Lived Assets by Geographic Region [Line Items]
Net sales	302,412	283,769	886,123	832,630
Non-U.S. | Asia Pacific
International Long-Lived Assets by Geographic Region [Line Items]
Net sales	100,448	105,135	300,058	265,508
Non-U.S. | EMEA
International Long-Lived Assets by Geographic Region [Line Items]
Net sales	$ 265,011	$ 207,897	$ 899,469	$ 566,383