Changes in Equity and Noncontrolling Interests (Tables)

6 Months Ended

Jun. 30, 2017

Equity

Rollforward of consolidated changes in equity

A rollforward of consolidated changes in equity for the six months ended June 30, 2017 is as follows:

	Amphenol Corporation Shareholders
								Accumulated
	Common Stock							Other
	Shares			Additional		Retained		Comprehensive		Treasury		Noncontrolling		Total
	(in millions)	Amount		Paid-In Capital		Earnings		Loss		Stock		Interests		Equity
Balance as of December 31, 2016	308.3	$	0.3	$	1,020.9	$	3,122.7	$	(469.0)	$	—	$	48.2	$	3,723.1
Net income							476.4						4.5		480.9
Other comprehensive income (loss)									128.0				1.2		129.2
Acquisitions resulting in noncontrolling interest													0.8		0.8
Purchase of noncontrolling interest					(5.5)								(9.5)		(15.0)
Distributions to shareholders of noncontrolling interests													(4.2)		(4.2)
Purchase of treasury stock											(399.9)				(399.9)
Retirement of treasury stock	(5.7)						(399.9)				399.9				—
Stock options exercised	2.6				74.4										74.4
Dividends declared							(97.8)								(97.8)
Stock-based compensation expense					24.4										24.4
Balance as of June 30, 2017	305.2	$	0.3	$	1,114.2	$	3,101.4	$	(341.0)	$	—	$	41.0	$	3,915.9

A rollforward of consolidated changes in equity for the six months ended June 30, 2016 is as follows:

	Amphenol Corporation Shareholders
								Accumulated
	Common Stock							Other
	Shares			Additional		Retained		Comprehensive		Treasury		Noncontrolling		Total
	(in millions)	Amount		Paid-In Capital		Earnings		Loss		Stock		Interests		Equity
Balance as of December 31, 2015	308.0	$	0.3	$	783.3	$	2,804.4	$	(349.5)	$	—	$	39.9	$	3,278.4
Net income							363.2						4.0		367.2
Other comprehensive income (loss)									20.7				(0.5)		20.2
Distributions to shareholders of noncontrolling interests													(4.1)		(4.1)
Purchase of treasury stock											(108.4)				(108.4)
Retirement of treasury stock	(2.0)						(108.4)				108.4				—
Stock options exercised, including tax benefit	2.6				83.7										83.7
Dividends declared							(86.3)								(86.3)
Stock-based compensation expense					23.2										23.2
Balance as of June 30, 2016	308.6	$	0.3	$	890.2	$	2,972.9	$	(328.8)	$	—	$	39.3	$	3,573.9