Segment Information (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 30, 2012	Jun. 30, 2011	Jun. 30, 2012	Jun. 30, 2011
Net sales:
Total net sales	$ 3,337,836	$ 3,184,984	$ 6,519,124	$ 6,159,182
Operating profit:
Total operating profit	291,575	264,623	539,945	476,005
Interest expense, net	(5,019)	(6,236)	(9,734)	(12,736)
Other, net	(19,251)	(16,836)	(34,738)	(29,738)
Income before income taxes	267,305	241,551	495,473	433,531
Automotive [Member]
Net sales:
Total net sales	1,644,902	1,585,074	3,138,401	2,989,939
Operating profit:
Total operating profit	152,978	138,795	267,539	236,694
Industrial [Member]
Net sales:
Total net sales	1,138,724	1,051,258	2,259,947	2,051,029
Operating profit:
Total operating profit	95,053	85,289	179,381	151,298
Office products [Member]
Net sales:
Total net sales	413,340	417,989	839,493	850,655
Operating profit:
Total operating profit	30,611	31,367	68,126	68,771
Electrical/electronic materials [Member]
Net sales:
Total net sales	149,440	136,780	296,556	276,594
Operating profit:
Total operating profit	12,933	9,172	24,899	19,242
Other [Member]
Net sales:
Total net sales	$ (8,570)	$ (6,117)	$ (15,273)	$ (9,035)