Shareholders' Equity and Noncontrolling Interests (Tables)

3 Months Ended

Mar. 31, 2019

Shareholders' Equity and Noncontrolling Interests

Rollforward of consolidated changes in equity

A rollforward of consolidated changes in equity for the three months ended March 31, 2019 is as follows:

	Amphenol Corporation Shareholders
											Accumulated
	Common Stock			Treasury Stock							Other
	Shares			Shares			Additional		Retained		Comprehensive		Noncontrolling		Total
	(in millions)	Amount		(in millions)	Amount		Paid-In Capital		Earnings		Loss		Interests		Equity
Balance as of December 31, 2018	299.2	$	0.3	(0.7)	$	(55.0)	$	1,433.2	$	3,028.7	$	(390.2)	$	47.2	$	4,064.2
Net income										267.5				2.4		269.9
Other comprehensive income												5.4		0.9		6.3
Distributions to shareholders of noncontrolling interests														(3.2)		(3.2)
Purchase of treasury stock				(1.8)		(160.0)										(160.0)
Retirement of treasury stock	(0.8)			0.8		72.4				(72.4)						—
Stock options exercised	1.0			0.3		22.9		37.6		(13.2)						47.3
Dividends declared ($0.23 per common share)										(68.5)						(68.5)
Stock-based compensation expense								14.4								14.4
Balance as of March 31, 2019	299.4	$	0.3	(1.4)	$	(119.7)	$	1,485.2	$	3,142.1	$	(384.8)	$	47.3	$	4,170.4

A rollforward of consolidated changes in equity for the three months ended March 31, 2018 is as follows:

	Amphenol Corporation Shareholders
											Accumulated
	Common Stock			Treasury Stock							Other
	Shares			Shares			Additional		Retained		Comprehensive		Noncontrolling		Total
	(in millions)	Amount		(in millions)	Amount		Paid-In Capital		Earnings		Loss		Interests		Equity
Balance as of December 31, 2017	305.7	$	0.3	—	$	—	$	1,249.0	$	2,941.5	$	(201.0)	$	53.6	$	4,043.4
Cumulative effect of adoption of revenue recognition standard										3.2						3.2
Net income										265.6				2.7		268.3
Other comprehensive income												61.3		1.5		62.8
Acquisitions resulting in noncontrolling interest														0.1		0.1
Distributions to shareholders of noncontrolling interests														(3.9)		(3.9)
Purchase of treasury stock				(4.2)		(382.0)										(382.0)
Retirement of treasury stock	(4.2)			4.2		382.0				(382.0)						—
Stock options exercised	0.6							20.7								20.7
Dividends declared ($0.19 per common share)										(57.4)						(57.4)
Stock-based compensation expense								12.7								12.7
Balance as of March 31, 2018	302.1	$	0.3	—	$	—	$	1,282.4	$	2,770.9	$	(139.7)	$	54.0	$	3,967.9

Schedules of dividends

	Three Months Ended March 31,
	2019		2018
Dividends declared	$	68.5	$	57.4
Dividends paid (including those declared in the prior year)		68.7		58.1