Selected Quarterly Financial Data (Unaudited) (Details) - USD ($) $ / shares in Units, $ in Millions	3 Months Ended								12 Months Ended
	Dec. 31, 2015	Sep. 30, 2015	Jun. 30, 2015	Mar. 31, 2015	Dec. 31, 2014	Sep. 30, 2014	Jun. 30, 2014	Mar. 31, 2014	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Net sales	$ 1,430.5	$ 1,459.6	$ 1,351.5	$ 1,327.1	$ 1,426.5	$ 1,358.7	$ 1,314.2	$ 1,246.1	$ 5,568.7	$ 5,345.5	$ 4,614.7
Gross Profit	458.5	464.0	432.5	424.6	456.7	431.7	416.8	388.9	1,779.5	1,693.8	1,450.8
Operating income	289.0	294.8	260.7	260.2	278.9	267.8	255.8	232.1	1,104.7	1,034.6	896.8
Net income attributable to Amphenol Corporation	$ 200.1	$ 204.5	$ 179.0	$ 179.8	$ 193.5	$ 182.2	$ 174.9	$ 158.5	$ 763.5	$ 709.1	$ 635.7
Net income per common share - Basic (in dollars per share)	$ 0.65	$ 0.66	$ 0.58	$ 0.58	$ 0.62	$ 0.58	$ 0.56	$ 0.50	$ 2.47	$ 2.26	$ 2.00
Net income per common share-Diluted (in dollars per share)	$ 0.63	$ 0.65	0.56	$ 0.57	0.61	0.57	$ 0.54	0.49	$ 2.41	$ 2.21	$ 1.96
Net income per diluted common share excluding the effects of charges related to acquisition-related expenses (in dollars per share)			$ 0.58		$ 0.63	$ 0.58		$ 0.50
Acquisition-related expenses									$ 5.7	$ 14.1	$ 6.0
2015 Acquisitions
Acquisition-related expenses			$ 5.7
Acquisition-related expenses, net of tax			$ 5.7
Acquisition-related expenses, net of tax (in dollars per share)			$ 0.02
Backlog
Acquisition-related expenses					$ 7.8			$ 2.0
Acquisition-related expenses, net of tax					$ 4.9			$ 1.3
Acquisition-related expenses, net of tax (in dollars per share)					$ 0.02			$ 0.01
2014 Acquisitions
Acquisition-related expenses					$ 1.8	$ 2.5
Acquisition-related expenses, net of tax					$ 1.5	$ 2.5
Acquisition-related expenses, net of tax (in dollars per share)						$ 0.01