Condensed Consolidated Statements of Comprehensive Income - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2019	Mar. 31, 2018
Condensed Consolidated Statements of Comprehensive Income
Net income	$ 269.9	$ 268.3
Total other comprehensive income (loss), net of tax:
Foreign currency translation adjustments	2.7	58.7
Unrealized gain (loss) on cash flow hedges	(0.2)	(0.9)
Defined benefit plan adjustment, net of tax of ($1.2) and ($1.6), respectively	3.8	5.0
Total other comprehensive income (loss), net of tax	6.3	62.8
Total comprehensive income	276.2	331.1
Less: Comprehensive income attributable to noncontrolling interests	(3.3)	(4.2)
Comprehensive income attributable to Amphenol Corporation	$ 272.9	$ 326.9