Earnings Per Share (Details) (USD $) In Thousands, except Share data	3 Months Ended		9 Months Ended
	Sep. 30, 2011	Sep. 30, 2010	Sep. 30, 2011	Sep. 30, 2010
Earnings Per Share
Net income attributable to Amphenol Corporation (in dollars)	$ 134,623	$ 137,268	$ 410,332	$ 365,292
Basic weighted average common shares outstanding (in shares)	167,951,866	173,813,753	171,411,779	173,535,255
Effect of dilutive stock options (in shares)	1,883,201	2,410,996	2,316,630	2,362,197
Dilutive weighted average common shares outstanding (in shares)	169,835,067	176,224,749	173,728,409	175,897,452
Earnings per share attributable to Amphenol Corporation :
Basic (in dollars per share)	$ 0.80	$ 0.79	$ 2.39	$ 2.11
Diluted (in dollars per share)	$ 0.79	$ 0.78	$ 2.36	$ 2.08
Anti-dilutive shares, excluded from the computations of earning per share (in shares)	6,319,513	4,394,863	3,555,165	3,530,395