Shareholders' Equity and Noncontrolling Interests (Tables)

6 Months Ended

Jun. 30, 2021

Shareholders' Equity and Noncontrolling Interests

Rollforward of consolidated changes in equity

A rollforward of consolidated changes in equity for the three months ended June 30, 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 March 31, 2021	599.2	$	0.6	(2.1)	$	(117.4)	$	2,105.7	$	3,807.1	$	(335.0)	$	60.7	$	5,521.7
Net income										369.8				1.8		371.6
Other comprehensive income (loss)												34.7		1.0		35.7
Distributions to shareholders of noncontrolling interests														(0.7)		(0.7)
Purchase of treasury stock				(2.5)		(167.3)										(167.3)
Retirement of treasury stock	(2.5)		—	2.5		167.3				(167.3)						—
Stock options exercised	2.6		—	0.3		17.3		73.2		(6.6)						83.9
Dividends declared ($0.145 per common share)										(86.6)						(86.6)
Stock-based compensation expense								20.0								20.0
Balance as of June 30, 2021	599.3	$	0.6	(1.8)	$	(100.1)	$	2,198.9	$	3,916.4	$	(300.3)	$	62.8	$	5,778.3

A rollforward of consolidated changes in equity for the six months ended June 30, 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										699.3				4.0		703.3
Other comprehensive income (loss)												(22.2)		0.8		(21.4)
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														(3.5)		(3.5)
Purchase of treasury stock				(4.9)		(320.1)										(320.1)
Retirement of treasury stock	(4.6)		—	4.6		300.3				(300.3)						—
Stock options exercised	3.2		—	0.5		30.8		89.3		(14.8)						105.3
Dividends declared ($0.29 per common share)										(173.2)						(173.2)
Stock-based compensation expense								39.0								39.0
Balance as of June 30, 2021	599.3	$	0.6	(1.8)	$	(100.1)	$	2,198.9	$	3,916.4	$	(300.3)	$	62.8	$	5,778.3

A rollforward of consolidated changes in equity for the three months ended June 30, 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 March 31, 2020	593.2	$	0.6	(1.4)	$	(58.5)	$	1,720.3	$	3,248.5	$	(525.1)	$	59.9	$	4,445.7
Net income										257.7				2.8		260.5
Other comprehensive income (loss)												30.5		0.3		30.8
Acquisitions resulting in noncontrolling interest														0.3		0.3
Distributions to shareholders of noncontrolling interests														(1.6)		(1.6)
Purchase of treasury stock				—		—										—
Retirement of treasury stock	—		—	—		—				—						—
Stock options exercised	3.9		—	0.9		37.5		97.3		(12.2)						122.6
Dividends declared ($0.125 per common share)										(74.6)						(74.6)
Stock-based compensation expense								16.6								16.6
Balance as of June 30, 2020	597.1	$	0.6	(0.5)	$	(21.0)	$	1,834.2	$	3,419.4	$	(494.6)	$	61.7	$	4,800.3

A rollforward of consolidated changes in equity for the six months ended June 30, 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										499.8				3.9		503.7
Other comprehensive income (loss)												(63.7)		(0.8)		(64.5)
Acquisitions resulting in noncontrolling interest														0.3		0.3
Purchase of noncontrolling interest								(2.1)						(5.2)		(7.3)
Distributions to shareholders of noncontrolling interests														(2.4)		(2.4)
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	5.1		—	1.1		49.8		121.3		(19.2)						151.9
Dividends declared ($0.25 per common share)										(148.6)						(148.6)
Stock-based compensation expense								32.0								32.0
Balance as of June 30, 2020	597.1	$	0.6	(0.5)	$	(21.0)	$	1,834.2	$	3,419.4	$	(494.6)	$	61.7	$	4,800.3

Schedules of dividends

	Three Months Ended June 30,				Six Months Ended June 30,
	2021		2020		2021		2020
Dividends declared	$	86.6	$	74.6	$	173.2	$	148.6
Dividends paid (including those declared in the prior year)		86.6		74.0		173.4		148.4