Shareholders' Equity and Noncontrolling Interests (Tables)

9 Months Ended

Sep. 30, 2020

Shareholders' Equity and Noncontrolling Interests

Rollforward of consolidated changes in equity

A rollforward of consolidated changes in equity for the three months ended September 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 June 30, 2020	298.5	$	0.3	(0.2)	$	(21.0)	$	1,834.5	$	3,419.4	$	(494.6)	$	61.7	$	4,800.3
Net income										346.6				2.9		349.5
Other comprehensive income (loss)												106.2		2.3		108.5
Distributions to shareholders of noncontrolling interests														(1.9)		(1.9)
Purchase of treasury stock				(1.9)		(201.9)										(201.9)
Retirement of treasury stock	(0.9)		—	0.9		91.6				(91.6)						—
Stock options exercised	1.7		—	0.3		34.4		84.6		(12.6)						106.4
Dividends declared ($0.25 per common share)										(74.7)						(74.7)
Stock-based compensation expense								19.0								19.0
Balance as of September 30, 2020	299.3	$	0.3	(0.9)	$	(96.9)	$	1,938.1	$	3,587.1	$	(388.4)	$	65.0	$	5,105.2

A rollforward of consolidated changes in equity for the nine months ended September 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	298.7	$	0.3	(0.8)	$	(70.8)	$	1,683.3	$	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										846.4				6.7		853.1
Other comprehensive income (loss)												42.5		1.5		44.0
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														(4.2)		(4.2)
Purchase of treasury stock				(4.6)		(459.2)										(459.2)
Retirement of treasury stock	(3.6)		—	3.6		348.9				(348.9)						—
Stock options exercised	4.2		—	0.9		84.2		205.9		(31.8)						258.3
Dividends declared ($0.75 per common share)										(223.2)						(223.2)
Stock-based compensation expense								51.0								51.0
Balance as of September 30, 2020	299.3	$	0.3	(0.9)	$	(96.9)	$	1,938.1	$	3,587.1	$	(388.4)	$	65.0	$	5,105.2

A rollforward of consolidated changes in equity for the three months ended September 30, 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 June 30, 2019	298.4	$	0.3	(1.2)	$	(101.5)	$	1,541.8	$	3,104.6	$	(396.9)	$	54.9	$	4,203.2
Net income										280.3				2.0		282.3
Other comprehensive income (loss)												(96.8)		(1.9)		(98.7)
Acquisitions resulting in noncontrolling interest														1.2		1.2
Distributions to shareholders of noncontrolling interests														(0.4)		(0.4)
Purchase of treasury stock				(1.7)		(150.0)										(150.0)
Retirement of treasury stock	(1.7)		—	1.7		150.0				(150.0)						—
Stock options exercised	0.5		—	0.1		5.9		27.2		(2.2)						30.9
Dividends declared ($0.25 per common share)										(74.0)						(74.0)
Stock-based compensation expense								16.6								16.6
Balance as of September 30, 2019	297.2	$	0.3	(1.1)	$	(95.6)	$	1,585.6	$	3,158.7	$	(493.7)	$	55.8	$	4,211.1

A rollforward of consolidated changes in equity for the nine months ended September 30, 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										836.3				6.9		843.2
Other comprehensive income (loss)												(103.5)		(2.0)		(105.5)
Acquisitions resulting in noncontrolling interest														11.2		11.2
Purchase of noncontrolling interest								(17.5)						(3.9)		(21.4)
Distributions to shareholders of noncontrolling interests														(3.6)		(3.6)
Purchase of treasury stock				(6.1)		(558.7)										(558.7)
Retirement of treasury stock	(5.1)		—	5.1		471.1				(471.1)						—
Stock options exercised	3.1		—	0.6		47.0		123.5		(24.4)						146.1
Dividends declared ($0.71 per common share)										(210.8)						(210.8)
Stock-based compensation expense								46.4								46.4
Balance as of September 30, 2019	297.2	$	0.3	(1.1)	$	(95.6)	$	1,585.6	$	3,158.7	$	(493.7)	$	55.8	$	4,211.1

Schedules of dividends

	Three Months Ended September 30,				Nine Months Ended September 30,
	2020		2019		2020		2019
Dividends declared	$	74.7	$	74.0	$	223.2	$	210.8
Dividends paid (including those declared in the prior year)		74.6		68.3		223.0		205.5