Condensed Consolidated Statements of Comprehensive Income - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2019	Sep. 30, 2018
Condensed Consolidated Statements of Comprehensive Income
Net income	$ 282.3	$ 319.6	$ 843.2	$ 875.7
Total other comprehensive (loss) income, net of tax:
Foreign currency translation adjustments	(102.6)	(54.6)	(116.9)	(154.2)
Unrealized gain (loss) on cash flow hedges	0.1	(0.7)	0.1	0.3
Defined benefit plan adjustment, net of tax of ($1.2) and ($3.6) for 2019, and ($1.6) and ($4.7) for 2018, respectively	3.8	5.0	11.3	14.9
Total other comprehensive (loss) income, net of tax	(98.7)	(50.3)	(105.5)	(139.0)
Total comprehensive income	183.6	269.3	737.7	736.7
Less: Comprehensive income attributable to noncontrolling interests	(0.1)	(1.4)	(4.9)	(6.1)
Comprehensive income attributable to Amphenol Corporation	$ 183.5	$ 267.9	$ 732.8	$ 730.6