CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2017	Sep. 30, 2016
CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME
Net income	$ 280.3	$ 227.1	$ 761.1	$ 594.3
Total other comprehensive income, net of tax:
Foreign currency translation adjustments	52.1	26.0	172.4	37.3
Unrealized gain (loss) on cash flow hedges	(0.6)	1.3		2.3
Defined benefit plan adjustment, net of tax of ($2.2) and ($6.7) for 2017 and ($2.2) and ($6.6) for 2016, respectively	4.2	4.0	12.5	12.0
Total other comprehensive income, net of tax	55.7	31.3	184.9	51.6
Total comprehensive income	336.0	258.4	946.0	645.9
Less: Comprehensive income attributable to noncontrolling interests	(3.6)	(2.7)	(9.3)	(6.2)
Comprehensive income attributable to Amphenol Corporation	$ 332.4	$ 255.7	$ 936.7	$ 639.7