Consolidated Statements Of Net Income (USD $) In Millions, except Per Share data, unless otherwise specified	3 Months Ended
	Mar. 31, 2012	Mar. 31, 2011
Consolidated Statements Of Net Income [Abstract]
Net sales	$ 2,178.9	$ 2,108.6
Cost of sales	(1,737.8)	(1,642.6)
Gross profit	441.1	466.0
Selling, general & administrative expenses	(93.6)	(90.9)
Research, development & engineering expenses, net	(126.3)	(114.5)
Amortization of intangibles	(4.6)	(3.7)
Other income (expense), net	(63.3)	(2.1)
Operating income	153.3	254.8
Equity in earnings of affiliates, net of tax	2.1	1.3
Interest income	0.8	0.9
Interest expense	(12.5)	(15.4)
Other financial items, net	(2.6)	(1.8)
Income before income taxes	141.1	239.8
Income tax expense	(39.7)	(57.3)
Net income	101.4	182.5
Less: net income attributable to non-controlling interests	0.9	1.0
Net income attributable to controlling interest	$ 100.5	$ 181.5
Net earnings per share - basic	$ 1.12	$ 2.04
Net earnings per share - diluted	$ 1.07	$ 1.93
Weighted average number of shares outstanding, net of treasury shares (in millions)	89.4	89.1
Weighted average number of shares outstanding, assuming dilution and net of treasury shares (in millions)	93.8	93.9
Number of shares outstanding, excluding dilution and net of treasury shares (in millions)	89.5	89.2
Cash dividend per share - declared	$ 0.47	$ 0.43
Cash dividend per share - paid	$ 0.45	$ 0.40