Shareholders' Equity and Noncontrolling Interests (Tables)

3 Months Ended

Mar. 31, 2021

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, 2021 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, 2020	600.7	$	0.6	(2.0)	$	(111.1)	$	2,068.1	$	3,705.4	$	(278.1)	$	67.0	$	5,451.9
Net income										329.6				2.2		331.8
Other comprehensive income (loss)												(56.9)		(0.2)		(57.1)
Acquisitions resulting in noncontrolling interest														1.8		1.8
Purchase of noncontrolling interest								2.5						(7.3)		(4.8)
Distributions to shareholders of noncontrolling interests														(2.8)		(2.8)
Purchase of treasury stock				(2.4)		(152.8)										(152.8)
Retirement of treasury stock	(2.1)		—	2.1		133.0				(133.0)						—
Stock options exercised	0.6		—	0.2		13.5		16.0		(8.3)						21.2
Dividends declared ($0.145 per common share)										(86.6)						(86.6)
Stock-based compensation expense								19.1								19.1
Balance as of March 31, 2021	599.2	$	0.6	(2.1)	$	(117.4)	$	2,105.7	$	3,807.1	$	(335.0)	$	60.7	$	5,521.7

A rollforward of consolidated changes in equity for the three months ended March 31, 2020 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, 2019	597.4	$	0.6	(1.6)	$	(70.8)	$	1,683.0	$	3,348.4	$	(430.9)	$	65.9	$	4,596.2
Cumulative effect of adoption of credit loss standard (ASU 2016-13)										(3.8)						(3.8)
Net income										242.1				1.1		243.2
Other comprehensive income (loss)												(94.2)		(1.1)		(95.3)
Purchase of noncontrolling interest								(2.1)						(5.2)		(7.3)
Distributions to shareholders of noncontrolling interests														(0.8)		(0.8)
Purchase of treasury stock				(5.4)		(257.2)										(257.2)
Retirement of treasury stock	(5.4)		—	5.4		257.2				(257.2)						—
Stock options exercised	1.2		—	0.2		12.3		24.0		(7.0)						29.3
Dividends declared ($0.125 per common share)										(74.0)						(74.0)
Stock-based compensation expense								15.4								15.4
Balance as of March 31, 2020	593.2	$	0.6	(1.4)	$	(58.5)	$	1,720.3	$	3,248.5	$	(525.1)	$	59.9	$	4,445.7

Schedules of dividends

	Three Months Ended March 31,
	2021		2020
Dividends declared	$	86.6	$	74.0
Dividends paid (including those declared in the prior year)		86.8		74.4