Segment Information (Tables)

6 Months Ended

Jun. 30, 2017

Segment Reporting [Abstract]

Summary of Segment Information

	Three Months Ended June 30,						Six Months Ended June 30,
	2017			2016			2017			2016
	(in thousands)						(in thousands)
Net sales:
Automotive	$	2,164,104		$	2,087,978		$	4,162,487		$	4,020,156
Industrial	1,252,867			1,167,395			2,484,949			2,320,022
Office products	504,401			481,605			1,023,406			958,259
Electrical/electronic materials	204,628			184,508			389,045			360,355
Other	(25,822		)	(21,848		)	(54,068		)	(40,887		)
Total net sales	$	4,100,178		$	3,899,638		$	8,005,819		$	7,617,905
Operating profit:
Automotive	$	207,332		$	203,572		$	359,089		$	357,282
Industrial	96,300			88,263			186,674			170,096
Office products	30,091			32,640			61,210			66,844
Electrical/electronic materials	15,533			15,987			29,168			30,828
Total operating profit	349,256			340,462			636,141			625,050
Interest expense, net	(6,878		)	(4,665		)	(13,052		)	(9,487		)
Other intangible assets amortization	(11,434		)	(9,225		)	(22,240		)	(17,985		)
Other, net	(33,807		)	(26,520		)	(59,937		)	(50,881		)
Income before income taxes	$	297,137		$	300,052		$	540,912		$	546,697