Earnings Per Share (Details) (USD $) In Millions, except Share data, unless otherwise specified	3 Months Ended								12 Months Ended
	Dec. 31, 2014	Sep. 30, 2014	Jun. 30, 2014	Mar. 31, 2014	Dec. 31, 2013	Sep. 30, 2013	Jun. 30, 2013	Mar. 31, 2013	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Earnings Per Share
Net income attributable to Amphenol Corporation (in dollars)	$ 193.5	$ 182.2	$ 174.9	$ 158.5	$ 167.9	$ 160.8	$ 154.0	$ 153.0	$ 709.1	$ 635.7	$ 555.3
Basic weighted average common shares outstanding									313,136,791	318,185,574	323,044,160
Effect of dilutive stock options (in shares)									7,293,349	6,363,424	4,850,062
Dilutive weighted average common shares outstanding									320,430,140	324,548,998	327,894,222
Earnings per share attributable to Amphenol Corporation shareholders:
Basic (in dollars per share)	$ 0.62	$ 0.58	$ 0.56	$ 0.50	$ 0.53	$ 0.51	$ 0.48	$ 0.48	$ 2.26	$ 2.00	$ 1.72
Diluted (in dollars per share)	$ 0.61	$ 0.57	$ 0.54	$ 0.49	$ 0.52	$ 0.50	$ 0.47	$ 0.47	$ 2.21	$ 1.96	$ 1.69
Anti-dilutive stock options, excluded from the computations of earning per share									5,455,092	3,751,018	9,103,156