Amphenol (APH) 10-Q 8 May 15 2015 Q1 Quarterly report Financial data

Document_and_Entity_Informatio

Document and Entity Information	3 Months Ended
	Mar. 31, 2015	Apr. 30, 2015
Document and Entity Information
Entity Registrant Name	AMPHENOL CORP /DE/
Entity Central Index Key	820313
Document Type	10-Q
Document Period End Date	31-Mar-15
Amendment Flag	FALSE
Current Fiscal Year End Date	-19
Entity Current Reporting Status	Yes
Entity Filer Category	Large Accelerated Filer
Entity Common Stock, Shares Outstanding		308,921,730
Document Fiscal Year Focus	2015
Document Fiscal Period Focus	Q1

CONDENSED_CONSOLIDATED_BALANCE

CONDENSED CONSOLIDATED BALANCE SHEETS (USD $)	Mar. 31, 2015	Dec. 31, 2014
In Millions, unless otherwise specified
Current Assets:
Cash and cash equivalents	$969.90	$968.90
Short-term investments	381.2	360.7
Total cash, cash equivalents and short-term investments	1,351.10	1,329.60
Accounts receivable, less allowance for doubtful accounts of $21.2 and $20.2, respectively	1,091.80	1,123.70
Inventories	871.4	865.6
Other current assets	219.5	185.2
Total current assets	3,533.80	3,504.10
Land and depreciable assets, less accumulated depreciation of $853.9 and $849.6, respectively	589.5	590.7
Goodwill	2,594.50	2,616.70
Intangibles and other long-term assets	307.8	315.5
Total assets	7,025.60	7,027
Current Liabilities:
Accounts payable	582.9	618.4
Accrued salaries, wages and employee benefits	99	109.9
Accrued income taxes	98.9	90.8
Accrued dividends		38.7
Other accrued expenses	143.3	186.2
Current portion of long-term debt	1.6	1.6
Total current liabilities	925.7	1,045.60
Long-term debt, less current portion	2,757	2,672.30
Accrued pension benefit obligations and other long-term liabilities	363.7	371.2
Equity:
Common Stock	0.3	0.3
Additional paid-in capital	688.8	659.4
Retained earnings	2,532.30	2,453.50
Accumulated other comprehensive loss	-271.5	-205.8
Total shareholders' equity attributable to Amphenol Corporation	2,949.90	2,907.40
Noncontrolling interests	29.3	30.5
Total equity	2,979.20	2,937.90
Total Liabilities and Equity	$7,025.60	$7,027

CONDENSED_CONSOLIDATED_BALANCE1

CONDENSED CONSOLIDATED BALANCE SHEETS (Parenthetical) (USD $)	Mar. 31, 2015	Dec. 31, 2014
In Millions, unless otherwise specified
CONDENSED CONSOLIDATED BALANCE SHEETS
Accounts receivable, allowance for doubtful accounts (in dollars)	$21.20	$20.20
Land and depreciable assets, accumulated depreciation	$853.90	$849.60

CONDENSED_CONSOLIDATED_STATEME

CONDENSED CONSOLIDATED STATEMENTS OF INCOME (USD $)	3 Months Ended
In Millions, except Share data, unless otherwise specified	Mar. 31, 2015	Mar. 31, 2014
CONDENSED CONSOLIDATED STATEMENTS OF INCOME
Net sales	$1,327.10	$1,246.10
Cost of sales	902.5	857.2
Gross profit	424.6	388.9
Acquisition-related expenses		2
Selling, general and administrative expense	164.4	154.8
Operating income	260.2	232.1
Interest expense	-17	-19.1
Other income, net	4.1	4.1
Income before income taxes	247.3	217.1
Provision for income taxes	-65.5	-57.3
Net income	181.8	159.8
Less: Net income attributable to noncontrolling interests	-2	-1.3
Net income attributable to Amphenol Corporation	$179.80	$158.50
Net income per common share - Basic (in dollars per share)	$0.58	$0.50
Weighted average common shares outstanding - Basic (in shares)	310,046,534	315,056,964
Net income per common share - Diluted (in dollars per share)	$0.57	$0.49
Weighted average common shares outstanding - Diluted (in shares)	317,985,645	322,354,312
Dividends declared per common share (in dollars per share)	$0.13	$0.10

CONDENSED_CONSOLIDATED_STATEME1

CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (USD $)	3 Months Ended
In Millions, unless otherwise specified	Mar. 31, 2015	Mar. 31, 2014
CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME
Net income	$181.80	$159.80
Total other comprehensive income (loss), net of tax :
Foreign currency translation adjustments	-67.9	-15.3
Unrealized gain on cash flow hedges	0.6	0.3
Defined benefit plan adjustment	1.6
Total other comprehensive loss, net of tax	-65.7	-15
Total comprehensive income	116.1	144.8
Less: Comprehensive income attributable to noncontrolling interests	-2	-0.9
Comprehensive income attributable to Amphenol Corporation	$114.10	$143.90

CONDENSED_CONSOLIDATED_STATEME2

CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOW (USD $)	3 Months Ended
In Millions, unless otherwise specified	Mar. 31, 2015	Mar. 31, 2014
Cash from operating activities:
Net income	$181.80	$159.80
Adjustments to reconcile net income to cash provided by operating activities:
Depreciation and amortization	40.1	39.9
Stock-based compensation expense	10.1	9.3
Excess tax benefits from stock-based compensation payment arrangements	-3.6	-2.7
Net change in components of working capital	-40.1	-10.2
Net change in other long-term assets and liabilities		6.6
Net cash provided by operating activities	188.3	202.7
Cash from investing activities:
Purchases of land and depreciable assets	-40	-54.2
Proceeds from disposals of land and depreciable assets	0.3	0.5
Purchases of short-term investments	-104.5	-120.7
Sales and maturities of short-term investments	84	145
Acquisitions, net of cash acquired	-76.1	-9
Net cash used in investing activities	-136.3	-38.4
Cash from financing activities:
Proceeds from issuance of senior notes		748.8
Long-term borrowings under credit facilities	1,811.50	142.8
Repayments of long-term debt	-1,725.90	-801.1
Payments of costs related to debt financing		-5.7
Proceeds from exercise of stock options	16	13.7
Excess tax benefits from stock-based compensation payment arrangements	3.6	2.7
Payments to shareholders of noncontrolling interests	-3.2	-1.1
Purchase and retirement of treasury stock	-62.2	-121.1
Dividend payments	-77.5
Net cash used in financing activities	-37.7	-21
Effect of exchange rate changes on cash and cash equivalents	-13.3	-6.8
Net change in cash and cash equivalents	1	136.5
Cash and cash equivalents balance, beginning of period	968.9	886.8
Cash and cash equivalents balance, end of period	969.9	1,023.30
Cash paid for:
Interest	30.2	13.3
Income taxes	$51.90	$48.80

Basis_of_Presentation_and_Prin

Basis of Presentation and Principles of Consolidation	3 Months Ended
	Mar. 31, 2015
Basis of Presentation and Principles of Consolidation
Basis of Presentation and Principles of Consolidation	Note 1—Basis of Presentation and Principles of Consolidation
	The condensed consolidated balance sheets as of March 31, 2015 and December 31, 2014 and the related condensed consolidated statements of income, comprehensive income and cash flow for the three months ended March 31, 2015 and 2014 include the accounts of Amphenol Corporation and its subsidiaries (the “Company”).  All material intercompany balances and transactions have been eliminated in consolidation. The condensed consolidated financial statements included herein are unaudited.  In the opinion of management, all adjustments, consisting of normal recurring adjustments, necessary for a fair presentation in conformity with accounting principles generally accepted in the United States of America have been included.  The results of operations for the three months ended March 31, 2015 are not necessarily indicative of the results to be expected for the full year.  These condensed consolidated financial statements and the related notes should be read in conjunction with the consolidated financial statements and notes included in the Company’s Annual Report on Form 10-K for the fiscal year ended December 31, 2014 (the “2014 Annual Report”).
	The Company effected a two-for-one stock split in the form of a stock dividend, payable to stockholders of record as of October 2, 2014, which was paid on October 9, 2014.  The share and per share information included herein has been retroactively restated to reflect the effect of the stock split for all periods presented.

New_Accounting_Pronouncements

New Accounting Pronouncements	3 Months Ended
	Mar. 31, 2015
New Accounting Pronouncements
New Accounting Pronouncements	Note 2—New Accounting Pronouncements
	In May 2014, the Financial Accounting Standards Board (the “FASB”) issued Accounting Standards Update No. 2014-09, Revenue from Contracts with Customers (“ASU 2014-09”), which stipulates that an entity should recognize revenue to depict the transfer of promised goods or services to customers in an amount that reflects the consideration to which the entity expects to be entitled in exchange for such goods or services.  To achieve this core principle, an entity should apply the following steps: (1) identify the contract(s) with a customer; (2) identify the performance obligations in the contract(s); (3) determine the transaction price(s); (4) allocate the transaction price(s) to the performance obligations in the contract(s); and (5) recognize revenue when (or as) the entity satisfies a performance obligation. The guidance also requires advanced disclosures regarding the nature, amount, timing and uncertainty of revenue and cash flows arising from an entity’s contracts with customers.  ASU 2014-09 is effective for annual reporting periods beginning after December 15, 2016 with early adoption not permitted.  The amendments may be applied retrospectively to each period presented or with the cumulative effect recognized as of the date of initial application.  The Company is currently evaluating ASU 2014-09 and does not anticipate a material impact on its consolidated financial statements.
	In August 2014, the FASB issued Accounting Standards Update No. 2014-15, Disclosure of Uncertainties about an Entity’s Ability to Continue as a Going Concern (“ASU 2014-15”), amending FASB Accounting Standards Subtopic 205-40 to provide guidance about management’s responsibility to evaluate whether there is substantial doubt about an entity’s ability to continue as a going concern and to provide related footnote disclosures. Specifically, the amendments (1) provide a definition of the term “substantial doubt,” (2) require an evaluation every reporting period, (3) provide principles for considering the mitigating effect of management’s plans, (4) require certain disclosures when substantial doubt is alleviated as a result of consideration of management’s plans, (5) require an express statement and other disclosures when substantial doubt is not alleviated, and (6) require an assessment for a period of one year after the date that financial statements are issued. ASU 2014-15 is effective for fiscal years ending after December 15, 2016, and for annual periods and interim periods thereafter. The Company is currently evaluating ASU 2014-15 and does not anticipate a material impact on its consolidated financial statements.
	In April 2015, the FASB issued Accounting Standards Update No. 2015-03, Simplifying the Presentation of Debt Issuance Costs (“ASU 2015-03”), which specifies that debt issuance costs related to a note shall be reported in the balance sheet as a direct deduction from the face amount of that note and that amortization of debt issuance costs shall be reported as interest expense.  ASU 2015-03 is effective for fiscal years, and interim periods within those fiscal years, beginning after December 15, 2015 and should be applied retrospectively.  The Company has evaluated ASU 2015-03 and believes it will not have a material impact on its consolidated financial statements.

Inventories

Inventories	3 Months Ended
	Mar. 31, 2015
Inventories
Inventories	Note 3—Inventories
	Inventories consist of:
		March 31,		December 31,
		2015		2014
	Raw materials and supplies	$	299.4	$	299.4
	Work in process	295.4		282.8
	Finished goods	276.6		283.4
		$	871.4	$	865.6

Reportable_Business_Segments

Reportable Business Segments	3 Months Ended
	Mar. 31, 2015
Reportable Business Segments
Reportable Business Segments	Note 4—Reportable Business Segments
	The Company has two reportable business segments: (i) Interconnect Products and Assemblies and (ii) Cable Products and Solutions. The Company aggregates its operating segments into reportable segments based upon similar economic characteristics and business groupings of products, services and customers. The Interconnect Product and Assemblies segment primarily designs, manufactures and markets a broad range of connector and connector systems, value-added products and other products, including antennas and sensors, used in a broad range of applications in a diverse set of end markets.  The Cable Products and Solutions segment primarily designs, manufactures and markets cable, value-added products and components for use primarily in the broadband communications and information technology markets as well as certain applications in other markets.  The accounting policies of the segments are the same as those for the Company as a whole and are described in Note 1 of the notes to the consolidated financial statements in the Company’s 2014 Annual Report.  The Company evaluates the performance of business units on, among other things, profit or loss from operations before interest, headquarters’ expense allocations, stock-based compensation expense, income taxes, amortization related to certain intangible assets and nonrecurring gains and losses.
	The segment results for the three months ended March 31, 2015 and 2014 are as follows:
		Interconnect Products						Cable				Total
		and Assemblies						Products and Solutions
		Three months ended March 31,
		2015			2014			2015		2014		2015		2014
	Net sales:
	-external	$	1,242.7		$	1,159.1		$	84.4	$	87.0	$	1,327.1	$	1,246.1
	-intersegment	2.3			1.1			5.1		5.3		7.4		6.4
	Segment operating income	271.0			242.8			10.2		10.6		281.2		253.4
	A reconciliation of segment operating income to consolidated income before income taxes for the three months ended March 31, 2015 and 2014 is summarized as follows:
		Three months ended
		March 31,
		2015			2014
	Segment operating income	$	281.2		$	253.4
	Interest expense	(17.0		)	(19.1		)
	Interest income	4.5			4.4
	Stock-based compensation expense	(10.1		)	(9.3		)
	Acquisition-related expenses	—			(2.0		)
	Other costs, net	(11.3		)	(10.3		)
	Income before income taxes	$	247.3		$	217.1

Changes_in_Equity_and_Noncontr

Changes in Equity and Noncontrolling Interests	3 Months Ended
	Mar. 31, 2015
Changes in Equity and Noncontrolling Interests
Changes in Equity and Noncontrolling Interests	Note 5—Changes in Equity and Noncontrolling Interests
	Net income attributable to noncontrolling interests is classified below net income.  Earnings per share is determined after the impact of the noncontrolling interests’ share in net income of the Company.  In addition, the equity attributable to noncontrolling interests is presented as a separate caption within equity.
	A rollforward of consolidated changes in equity for the three months ended March 31, 2015 is as follows:
		Amphenol Corporation Shareholders
		Common Stock									Accum. Other
		Shares		Amount		Additional Paid-		Retained			Comprehensive			Treasury			Noncontrolling			Total
		(in millions)				In Capital		Earnings			Loss			Stock			Interests			Equity
	Balance as of December 31, 2014	309.8		$	0.3	$	659.4	$	2,453.50		$	(205.8	)	$	—		$	30.5		$	2,937.90
	Net income							179.8									2			181.8
	Other comprehensive income										(65.7		)				—			(65.7		)
	Payments to shareholders of noncontrolling interests																(3.2		)	(3.2		)
	Purchase of treasury stock													(62.2		)				(62.2		)
	Retirement of treasury stock	(1.1	)					(62.2		)				62.2						—
	Stock options exercised, including tax benefit	0.7				19.3														19.3
	Dividends declared							(38.8		)										(38.8		)
	Stock-based compensation expense					10.1														10.1
	Balance as of March 31, 2015	309.4		$	0.3	$	688.8	$	2,532.30		$	(271.5	)	$	—		$	29.3		$	2,979.20
	A rollforward of consolidated changes in equity for the three months ended March 31, 2014 is as follows:
		Amphenol Corporation Shareholders
		Common Stock									Accum. Other
		Shares		Amount		Additional Paid-		Retained			Comprehensive			Treasury			Noncontrolling			Total
		(in millions)				In Capital		Earnings			Loss			Stock			Interests			Equity
	Balance as of December 31, 2013	316.4		$	0.3	$	489.8	$	2,424.40		$	(55.0	)	$	—		$	20.6		$	2,880.10
	Net income							158.5									1.3			159.8
	Other comprehensive income										(14.6		)				(0.4		)	(15.0		)
	Payments to shareholders of noncontrolling interests																(1.1		)	(1.1		)
	Purchase of treasury stock													(121.1		)				(121.1		)
	Retirement of treasury stock	(2.8	)					(121.1		)				121.1						—
	Stock options exercised, including tax benefit	0.7				15.3														15.3
	Dividends declared							(31.4		)										(31.4		)
	Stock-based compensation expense					9.3														9.3
	Balance as of March 31, 2014	314.3		$	0.3	$	514.4	$	2,430.40		$	(69.6	)	$	—		$	20.4		$	2,895.90

Earnings_Per_Share

Earnings Per Share	3 Months Ended
	Mar. 31, 2015
Earnings Per Share
Earnings Per Share	Note 6—Earnings Per Share
	Basic earnings per share (“EPS”) is computed by dividing net income attributable to Amphenol Corporation by the weighted-average number of common shares outstanding.  Diluted EPS is computed by dividing net income attributable to Amphenol Corporation by the weighted-average number of common shares and dilutive common shares outstanding, which relates to stock options.  A reconciliation of the basic weighted average common shares outstanding to diluted weighted average common shares outstanding for the three months ended March 31, 2015 and 2014 is as follows:
		Three months ended March 31,
		2015		2014
	Net income attributable to Amphenol Corporation shareholders	$	179.8	$	158.5
	Basic weighted average common shares outstanding	310,046,534		315,056,964
	Effect of dilutive stock options	7,939,111		7,297,348
	Diluted weighted average common shares outstanding	317,985,645		322,354,312
	Earnings per share attributable to Amphenol Corporation shareholders:
	Basic	$	0.58	$	0.50
	Diluted	$	0.57	$	0.49
	Excluded from the computations above were anti-dilutive stock options of 3,146,450 and 5,529,266 for the three months ended March 31, 2015 and 2014, respectively.

Commitments_and_Contingencies

Commitments and Contingencies	3 Months Ended
	Mar. 31, 2015
Commitments and Contingencies
Commitments and Contingencies	Note 7—Commitments and Contingencies
	The Company has been named as defendant in several legal actions in which various amounts are claimed arising from normal business activities.  Although the amount of any ultimate liability with respect to such matters cannot be precisely determined, in the opinion of management, such matters are not expected to have a material effect on the Company’s financial condition, results of operations or cash flows.
	Certain operations of the Company are subject to environmental laws and regulations which govern the discharge of pollutants into the air and water, as well as the handling and disposal of solid and hazardous wastes.  The Company believes that its operations are currently in substantial compliance with applicable environmental laws and regulations and that the costs of continuing compliance will not have a material effect on the Company’s financial condition, results of operations or cash flows.

StockBased_Compensation

Stock-Based Compensation	3 Months Ended
	Mar. 31, 2015
Stock-Based Compensation
Stock-Based Compensation	Note 8—Stock-Based Compensation
	Stock Options
	In 2009, the Company adopted the 2009 Stock Purchase and Option Plan for Key Employees of Amphenol and its Subsidiaries (the “2009 Employee Option Plan”).  The Company also continues to maintain the 2000 Stock Purchase and Option Plan for Key Employees of Amphenol and Subsidiaries (the “2000 Employee Option Plan”).  No additional stock options can be granted under the 2000 Employee Option Plan.  The 2009 Employee Option Plan authorizes the granting of additional stock options by a committee of the Company’s Board of Directors and was amended in May 2014 to increase the number of shares of the Company’s Class A Common Stock (“Common Stock”) reserved for issuance from 32,000,000 shares to 58,000,000 shares.  As of March 31, 2015, there were 24,979,260 shares of Common Stock available for the granting of additional stock options under the 2009 Employee Option Plan.  Options granted under the 2000 Employee Option Plan and the 2009 Employee Option Plan generally vest ratably over a period of five years and are generally exercisable over a period of ten years from the date of grant.
	In 2004, the Company adopted the 2004 Stock Option Plan for Directors of Amphenol Corporation (the “2004 Directors Option Plan”).  The 2004 Directors Option Plan is administered by the Company’s Board of Directors.  As of March 31, 2015, there were 140,000 shares of Common Stock available for the granting of additional stock options under the 2004 Directors Option Plan, although no additional stock options are expected to be granted under this plan.  Options granted under the 2004 Directors Option Plan generally vest ratably over a period of three years and are generally exercisable over a period of ten years from the date of grant.
	Stock option activity for the three months ended March 31, 2015 was as follows:
		Options		Weighted			Weighted Average	Aggregate
				Average			Remaining	Intrinsic
				Exercise Price			Contractual Term	Value
							(in years)
	Options outstanding at January 1, 2015	27,787,920		$	31.6		7.09	$	617.2
	Options granted	92,000
	Options exercised	(742,280	)
	Options forfeited	(92,680	)
	Options outstanding at March 31, 2015	27,044,960		31.95			6.91	729.7
	Vested and non-vested options expected to vest at March 31, 2015	24,835,981		$	31.54		6.83	$	680.2
	Exercisable options at March 31, 2015	10,632,080		$	23.32		5.32	$	378.6
	A summary of the status of the Company’s non-vested options as of March 31, 2015 and changes during the three months then ended is as follows:
		Options		Weighted
				Average Fair
				Value at Grant
				Date
	Non-vested options at January 1, 2015	16,440,560		$	7.98
	Options granted	92,000		10.3
	Options vested	(27,000	)	9.51
	Options forfeited	(92,680	)	7.94
	Non-vested options at March 31, 2015	16,412,880		7.99
	During the three months ended March 31, 2015 and 2014, the following activity occurred under the Company’s option plans:
		Three months ended
		March 31,
		2015			2014
	Total intrinsic value of stock options exercised	$	25.9		$	15.6
	Total fair value of stock options vested	0.3			0.1
	As of March 31, 2015, the total compensation cost related to non-vested options not yet recognized is approximately $87.4 with a weighted average expected amortization period of 3.26 years.
	Restricted Shares
	In 2012, the Company adopted the 2012 Restricted Stock Plan for Directors of Amphenol Corporation (the “2012 Directors Restricted Stock Plan”). The 2012 Directors Restricted Stock Plan is administered by the Company’s Board of Directors.  As of March 31, 2015, the number of restricted shares available for grant under the 2012 Directors Restricted Stock Plan was 171,230.  Restricted shares granted under the 2012 Directors Restricted Stock Plan generally vest on the first anniversary of the grant date.  Grants under the 2012 Directors Restricted Stock Plan entitle the holder to receive shares of Common Stock without payment.
	Restricted share activity for the three months ended March 31, 2015 was as follows:
		Restricted		Fair Value at			Weighted
		Shares		Grant Date			Average Remaining
							Amortization Term
							(in years)
	Restricted shares outstanding at January 1, 2015	18,340		$	47.72		0.39
	Restricted shares granted	692		54.96
	Restricted shares outstanding at March 31, 2015	19,032		47.98			0.15
	The grant-date fair value of each option grant under the 2000 Employee Option Plan, the 2009 Employee Option Plan and the 2004 Directors Option Plan is estimated using the Black-Scholes option pricing model. The grant-date fair value of each restricted share grant is determined based on the closing share price of the Company’s stock on the date of the grant. The fair value is then amortized on a straight-line basis over the requisite service period of the awards, which is generally the vesting period. Use of a valuation model for option grants requires management to make certain assumptions with respect to selected model inputs. Expected share price volatility is calculated based on the historical volatility of the stock of the Company and implied volatility derived from related exchange traded options. The average expected life is based on the contractual term of the option and expected exercise and historical post-vesting termination experience. The risk-free interest rate is based on U.S. Treasury zero-coupon issues with a remaining term equal to the expected life assumed at the date of grant. The expected annual dividend per share is based on the Company’s dividend rate.
	Stock-based compensation expense includes the estimated effects of forfeitures, which are adjusted over the requisite service period to the extent actual forfeitures differ or are expected to differ from such estimates.  Changes in estimated forfeitures are recognized in the period of change and impact the amount of expense to be recognized in future periods.  For the three months ended March 31, 2015, the Company’s income before income taxes and net income were reduced for stock-based compensation expense by $10.1 and $7.6, respectively.  For the three months ended March 31, 2014, the Company’s income before income taxes and net income were reduced for stock-based compensation expense by $9.3 and $6.8, respectively. The expense incurred for stock-based compensation is included in selling, general and administrative expense in the accompanying Condensed Consolidated Statements of Income.

Shareholders_Equity

Shareholders' Equity	3 Months Ended
	Mar. 31, 2015
Shareholders' Equity
Shareholders' Equity	Note 9—Shareholders’ Equity
	In January 2015, the Board of Directors authorized a stock repurchase program under which the Company may repurchase up to 10 million shares of Common Stock during the two year period ending January 20, 2017 (the “2015 Stock Repurchase Program”).  The price and timing of any such purchases under the 2015 Stock Repurchase Program will depend on factors such as levels of cash generation from operations, the volume of stock option exercises by employees, cash requirements for acquisitions, economic and market conditions and stock price.  During the three months ended March 31, 2015, the Company repurchased 1.1 million shares of Common Stock for $62.2.  These treasury shares have been retired by the Company and common stock and retained earnings were reduced accordingly.  Through April 30, 2015, the Company has repurchased an additional 0.6 million shares of Common Stock for $34.8.  At April 30, 2015, approximately 8.3 million additional shares of Common Stock may be repurchased under the 2015 Stock Repurchase Program.
	Contingent upon declaration by the Board of Directors, the Company generally pays a quarterly dividend on shares of Common Stock.  In the third quarter of 2014, the Board of Directors approved an increase in the quarterly dividend rate from $0.10 to $0.125 per share effective with the third quarter 2014 dividend.  For the three months ended March 31, 2015, the Company paid dividends of $77.5, which included declared dividends in the amount of $38.8 paid in March 2015.  For the three months ended March 31, 2014, the Company did not pay any dividends and declared dividends in the amount of $31.4 which were paid in April 2014.

Benefit_Plans_and_Other_Postre

Benefit Plans and Other Postretirement Benefits	3 Months Ended
	Mar. 31, 2015
Benefit Plans and Other Postretirement Benefits
Benefit Plans and Other Postretirement Benefits	Note 10—Benefit Plans and Other Postretirement Benefits
	The Company and certain of its domestic subsidiaries have defined benefit pension plans (the “U.S. Plans”), which cover certain U.S. employees and which represent the majority of the plan assets and benefit obligations of the aggregate defined benefit plans of the Company.  The U.S. Plans’ benefits are generally based on years of service and compensation and are generally noncontributory.  Certain U.S. employees not covered by the U.S. Plans are covered by defined contribution plans.  Certain foreign subsidiaries have defined benefit plans covering their employees (the “International Plans” and, together with the U.S. Plans, the “Plans”). The following is a summary, based on the most recent actuarial valuations of the Company’s net cost for pension benefits, of the Plans and other postretirement benefits for the three months ended March 31, 2015 and 2014.
		Pension Benefits						Other Postretirement
								Benefits
		Three months ended March 31,
		2015			2014			2015		2014
	Service cost	$	2.3		$	2		$	—	$	—
	Interest cost	5.8			6			0.1		0.1
	Expected return on plan assets	(7.3		)	(7.1		)	—		—
	Amortization of prior service cost	0.6			0.7			—		—
	Amortization of net actuarial losses	6.5			4			0.1		0.1
	Net pension expense	$	7.9		$	5.6		$	0.2	$	0.2
	For the three months ended March 31, 2015, the Company did not make a cash contribution to the U.S. Plans and estimates that, based on current actuarial calculations it will make aggregate cash contributions to the Plans in 2015 of approximately $22.0, the majority of which will be to the U.S. Plans.  The timing and amount of cash contributions in subsequent years will depend on a number of factors, including the investment performance of the Plan assets.
	The Company offers various defined contribution plans for certain U.S. and foreign employees. Participation in these plans is based on certain eligibility requirements. The Company matches the majority of employee contributions to U.S. defined contribution plans with cash contributions up to a maximum of 5% of eligible compensation.  During the three months ended March 31, 2015 and 2014, the total matching contributions to these U.S. defined contribution plans were approximately $1.2 and $0.9, respectively.

Goodwill_and_Other_Intangible_

Goodwill and Other Intangible Assets	3 Months Ended
	Mar. 31, 2015
Goodwill and Other Intangible Assets
Goodwill and Other Intangible Assets	Note 11—Goodwill and Other Intangible Assets
	As of March 31, 2015, the Company has goodwill totaling $2,594.5, of which $2,470.8 is related to the Interconnect Products and Assemblies segment with the remainder related to the Cable Products and Solutions segment.  For the three months ended March 31, 2015, goodwill decreased by $22.2, primarily as a result of a decrease of $59.8 due to the impact of translation offset in part by goodwill recognized related to an acquisition in the Interconnect Products and Assemblies segment made during the first quarter of 2015.  The Company is in the process of completing its analysis of fair value of the assets acquired related to certain 2014 and these 2015 acquisitions and anticipates that the final assessment of values of those assets will not differ materially from the preliminary assessment.
	Other than goodwill and indefinite-lived trade name intangible assets with a value of approximately $52.3, the Company’s intangible assets are subject to amortization.A summary of the Company’s amortizable intangible assets as of March 31, 2015 and December 31, 2014 is as follows:
		March 31, 2015				December 31, 2014
		Gross Carrying		Accumulated		Gross Carrying		Accumulated
		Amount		Amortization		Amount		Amortization
	Customer relationships	$	302.9	$	99.4	$	299.8	$	92.3
	Proprietary technology	53.8		27.6		53.8		26.5
	License agreements	6.0		6.0		6.0		6.0
	Backlog and other	19.7		19.2		19.7		19.0
	Total	$	382.4	$	152.2	$	379.3	$	143.8
	Customer relationships, proprietary technology, license agreements, and backlog and other amortizable intangible assets have weighted average useful lives of approximately 10 years, 14 years, 8 years and 2 years, respectively, for an aggregate weighted average useful life of approximately 10 years at March 31, 2015.
	Intangible assets are included in Intangibles and other long-term assets in the accompanying Condensed Consolidated Balance Sheets.  The amortization expense for the three months ended March 31, 2015 and 2014 was approximately $8.4 and $8.3, respectively.  As of March 31, 2015, amortization expense estimated for each of the next five fiscal years is approximately $33.3 in 2015, $33.2 in 2016, $32.8 in 2017, $28.6 in 2018 and $24.5 in 2019.

Debt

Debt	3 Months Ended
	Mar. 31, 2015
Debt
Debt	Note 12—Debt
	The Company’s debt consists of the following:
		March 31, 2015						December 31, 2014
		Carrying			Approximate			Carrying			Approximate
		Amount			Fair Value			Amount			Fair Value
	$1,500.0 Revolving Credit Facility	$	—		$	—		$	—		$	—
	$200.0 Credit Agreement	—			—			—			—
	$1,500.0 Commercial Paper Program	753			753			671			671
	1.55% Senior Notes due September 2017	374.7			375.8			374.7			373
	2.55% Senior Notes due January 2019	749.1			762.1			749.1			754.9
	3.125% Senior Notes due September 2021	374.7			382.9			374.7			375.3
	4.00% Senior Notes due February 2022	499.1			529.6			499.1			524.5
	Notes payable to foreign banks and other debt	8			8			5.3			5.3
	Total debt	2,758.60			2,811.40			2,673.90			2,704.00
	Less current portion	(1.6		)	(1.6		)	(1.6		)	(1.6		)
	Total long-term debt	$	2,757.00		$	2,809.80		$	2,672.30		$	2,702.40
	Credit Facilities and Commercial Paper Program
	The Company has a $1,500.0 unsecured credit facility (the “Revolving Credit Facility”) with a maturity date of July 2018 and a $200.0 unsecured credit facility (the “Credit Agreement”) which is renewable annually.  Both of these facilities give the Company the ability to borrow at a spread over LIBOR.
	The Company has a commercial paper program (the “Program”) pursuant to which it issues short-term unsecured commercial paper notes (“Commercial Paper”) in one or more private placements.  Amounts available under the Program are borrowed, repaid and re-borrowed from time to time.  The maturities of the Commercial Paper vary, but may not exceed 397 days from the date of issue.  The Commercial Paper is sold under customary terms in the commercial paper market and may be issued at a discount from par, or, alternatively, may be sold at par and bear varying interest rates on a fixed or floating basis.  The Program was rated A-2 by Standard & Poor’s and P-2 by Moody’s and is backstopped by the Revolving Credit Facility.  The maximum aggregate principal amount of the Commercial Paper outstanding under the Program at any time is $1,500.0.  The Commercial Paper is classified as long-term debt in the accompanying Condensed Consolidated Balance Sheets since the Company has the intent and ability to refinance the Commercial Paper on a long-term basis using the Revolving Credit Facility.  The carrying value of Commercial Paper borrowings approximated their fair value given that the Commercial Paper is actively traded.  As such, the Commercial Paper is classified as Level 1 in the fair value hierarchy (Note 13).  The average interest rate on the Commercial Paper as of March 31, 2015 was 0.63%.
	Senior Notes
	All of the Company’s outstanding senior notes, which are listed in the table above, are unsecured and rank equally in right of payment with the Company’s other unsecured senior indebtedness. Interest on each series of the senior notes is payable semiannually. The Company may, at its option, redeem some or all of any series senior notes at any time by paying 100% of the principal amount, plus accrued and unpaid interest, if any, to the date of repurchase, and if redeemed prior to the date of maturity, a make-whole premium. Fair values of the senior notes are based on recent bid prices in an active market and are therefore classified as Level 1 in the fair value hierarchy (Note 13).

Fair_Value_Measurements

Fair Value Measurements	3 Months Ended
	Mar. 31, 2015
Fair Value Measurements
Fair Value Measurements	Note 13—Fair Value Measurements
	The Company follows the framework within the Fair Value Measurements and Disclosures topic of the Accounting Standards Codification, which requires fair value to be determined based on the exchange price that would be received for an asset or paid to transfer a liability (an exit price) in the principal or most advantageous market for the asset or liability in an orderly transaction between market participants. These requirements establish market or observable inputs as the preferred source of values. Assumptions based on hypothetical transactions are used in the absence of market inputs. The Company does not have any non-financial instruments accounted for at fair value on a recurring basis.
	The valuation techniques required are based upon observable and unobservable inputs. Observable inputs reflect market data obtained from independent sources, while unobservable inputs reflect the Company’s market assumptions. These two types of inputs create the following fair value hierarchy:
	Level 1Quoted prices for identical instruments in active markets.
	Level 2Quoted prices for similar instruments in active markets; quoted prices for identical or similar instruments in markets that are not active; and model-derived valuations whose inputs are observable or whose significant value drivers are observable.
	Level 3Significant inputs to the valuation model are unobservable.
	The Company believes that the assets or liabilities subject to such standards with fair value disclosure requirements are short-term investments and derivative instruments. Substantially all of the Company’s short-term investments consist of certificates of deposit with original maturities of twelve months or less and as such, are considered as Level 1 in the fair value hierarchy as they are traded in active markets which have identical assets. The carrying amounts of these instruments, the majority of which are in non-U.S. bank accounts, approximate their fair value. The Company’s derivative instruments represent foreign exchange rate forward contracts, which are valued using bank quotations based on market observable inputs such as forward and spot rates and are therefore classified as Level 2 in the fair value hierarchy. The impact of the credit risk related to these financial assets is immaterial. The fair values of the Company’s financial and non-financial assets and liabilities subject to such standards at March 31, 2015 and December 31, 2014 are as follows:
		Fair Value Measurements at March 31, 2015
		Total		Quoted Prices in Active		Significant		Significant
				Markets for Identical		Observable		Unobservable Inputs
				Assets (Level 1)		Inputs		(Level 3)
						(Level 2)
	Short-term investments	$	381.2	$	381.2	$	—	$	—
	Forward contracts	50.9		—		50.9		—
	Total	$	432.1	$	381.2	$	50.9	$	—
		Fair Value Measurements at December 31, 2014
		Total		Quoted Prices in Active		Significant		Significant
				Markets for Identical		Observable		Unobservable Inputs
				Assets (Level 1)		Inputs		(Level 3)
						(Level 2)
	Short-term investments	$	360.7	$	360.7	$	—	$	—
	Forward contracts	11.0		—		11.0		—
	Total	$	371.7	$	360.7	$	11.0	$	—
	The Company does not have any significant financial or non-financial assets and liabilities that are measured at fair value on a non-recurring basis.
	The amount recognized in Accumulated other comprehensive income (loss) associated with foreign exchange rate forward contracts and the amount reclassified from Accumulated other comprehensive income (loss) to foreign exchange gain (loss) in the accompanying Condensed Consolidated Statements of Income during the three month periods ended March 31, 2015 and 2014 was not material.  The fair value of the forward contracts are recorded within Other current assets in the accompanying Condensed Consolidated Balance Sheets.

Income_Taxes

Income Taxes	3 Months Ended
	Mar. 31, 2015
Income Taxes
Income Taxes	Note 14—Income Taxes
	The provision for income taxes for the first quarter of 2015 and 2014 was at an effective rate of 26.5% and 26.4%, respectively.   Excluding the net impact of separately stated acquisition-related expenses incurred in the first quarter of 2014, the Company’s effective tax rate for the first quarter of 2015 and 2014 was 26.5%.
	The Company is present in the U.S. and numerous foreign taxable jurisdictions, and at any point in time has numerous audits underway at various stages of completion. With few exceptions, the Company is subject to income tax examinations by tax authorities for the years 2011 and after.  The Company is generally not able to precisely estimate the ultimate settlement amounts or timing until the close of an audit.  The Company evaluates its tax positions and establishes liabilities for uncertain tax positions that may be challenged by local authorities and may not be fully sustained, despite the Company’s belief that the underlying tax positions are fully supportable. As of March 31, 2015, the amount of the liability for unrecognized tax benefits, which if recognized would impact the effective tax rate, was approximately $18.8, which is included in Accrued pension benefit obligations and other long-term liabilities in the accompanying Condensed Consolidated Balance Sheets.  Unrecognized tax benefits are reviewed on an ongoing basis and are adjusted for changing facts and circumstances, including progress of tax audits and closing of statutes of limitations.  Based on information currently available, management anticipates that over the next twelve month period, audit activity could be completed and statutes of limitations may close relating to existing unrecognized tax benefits of approximately $1.0.

Inventories_Tables

Inventories (Tables)	3 Months Ended
	Mar. 31, 2015
Inventories
Schedule of Inventories
		March 31,		December 31,
		2015		2014
	Raw materials and supplies	$	299.4	$	299.4
	Work in process	295.4		282.8
	Finished goods	276.6		283.4
		$	871.4	$	865.6

Reportable_Business_Segments_T

Reportable Business Segments (Tables)	3 Months Ended
	Mar. 31, 2015
Reportable Business Segments
Schedule of segment reporting information by segment
		Interconnect Products						Cable				Total
		and Assemblies						Products and Solutions
		Three months ended March 31,
		2015			2014			2015		2014		2015		2014
	Net sales:
	-external	$	1,242.7		$	1,159.1		$	84.4	$	87.0	$	1,327.1	$	1,246.1
	-intersegment	2.3			1.1			5.1		5.3		7.4		6.4
	Segment operating income	271.0			242.8			10.2		10.6		281.2		253.4
Schedule of the reconciliation of segment operating income to consolidated income before income taxes
		Three months ended
		March 31,
		2015			2014
	Segment operating income	$	281.2		$	253.4
	Interest expense	(17.0		)	(19.1		)
	Interest income	4.5			4.4
	Stock-based compensation expense	(10.1		)	(9.3		)
	Acquisition-related expenses	—			(2.0		)
	Other costs, net	(11.3		)	(10.3		)
	Income before income taxes	$	247.3		$	217.1

Changes_in_Equity_and_Noncontr1

Changes in Equity and Noncontrolling Interests (Tables)	3 Months Ended
	Mar. 31, 2015
Changes in Equity and Noncontrolling Interests
Rollforward of consolidated changes in equity
	A rollforward of consolidated changes in equity for the three months ended March 31, 2015 is as follows:
		Amphenol Corporation Shareholders
		Common Stock									Accum. Other
		Shares		Amount		Additional Paid-		Retained			Comprehensive			Treasury			Noncontrolling			Total
		(in millions)				In Capital		Earnings			Loss			Stock			Interests			Equity
	Balance as of December 31, 2014	309.8		$	0.3	$	659.4	$	2,453.50		$	(205.8	)	$	—		$	30.5		$	2,937.90
	Net income							179.8									2			181.8
	Other comprehensive income										(65.7		)				—			(65.7		)
	Payments to shareholders of noncontrolling interests																(3.2		)	(3.2		)
	Purchase of treasury stock													(62.2		)				(62.2		)
	Retirement of treasury stock	(1.1	)					(62.2		)				62.2						—
	Stock options exercised, including tax benefit	0.7				19.3														19.3
	Dividends declared							(38.8		)										(38.8		)
	Stock-based compensation expense					10.1														10.1
	Balance as of March 31, 2015	309.4		$	0.3	$	688.8	$	2,532.30		$	(271.5	)	$	—		$	29.3		$	2,979.20
	A rollforward of consolidated changes in equity for the three months ended March 31, 2014 is as follows:
		Amphenol Corporation Shareholders
		Common Stock									Accum. Other
		Shares		Amount		Additional Paid-		Retained			Comprehensive			Treasury			Noncontrolling			Total
		(in millions)				In Capital		Earnings			Loss			Stock			Interests			Equity
	Balance as of December 31, 2013	316.4		$	0.3	$	489.8	$	2,424.40		$	(55.0	)	$	—		$	20.6		$	2,880.10
	Net income							158.5									1.3			159.8
	Other comprehensive income										(14.6		)				(0.4		)	(15.0		)
	Payments to shareholders of noncontrolling interests																(1.1		)	(1.1		)
	Purchase of treasury stock													(121.1		)				(121.1		)
	Retirement of treasury stock	(2.8	)					(121.1		)				121.1						—
	Stock options exercised, including tax benefit	0.7				15.3														15.3
	Dividends declared							(31.4		)										(31.4		)
	Stock-based compensation expense					9.3														9.3
	Balance as of March 31, 2014	314.3		$	0.3	$	514.4	$	2,430.40		$	(69.6	)	$	—		$	20.4		$	2,895.90

Earnings_Per_Share_Tables

Earnings Per Share (Tables)	3 Months Ended
	Mar. 31, 2015
Earnings Per Share
Schedule of the reconciliation of basic weighted average common shares outstanding to diluted weighted average common shares outstanding
		Three months ended March 31,
		2015		2014
	Net income attributable to Amphenol Corporation shareholders	$	179.8	$	158.5
	Basic weighted average common shares outstanding	310,046,534		315,056,964
	Effect of dilutive stock options	7,939,111		7,297,348
	Diluted weighted average common shares outstanding	317,985,645		322,354,312
	Earnings per share attributable to Amphenol Corporation shareholders:
	Basic	$	0.58	$	0.50
	Diluted	$	0.57	$	0.49

StockBased_Compensation_Tables

Stock-Based Compensation (Tables)	3 Months Ended
	Mar. 31, 2015
Stock-Based Compensation
Schedule of stock option activity
		Options		Weighted			Weighted Average	Aggregate
				Average			Remaining	Intrinsic
				Exercise Price			Contractual Term	Value
							(in years)
	Options outstanding at January 1, 2015	27,787,920		$	31.6		7.09	$	617.2
	Options granted	92,000
	Options exercised	(742,280	)
	Options forfeited	(92,680	)
	Options outstanding at March 31, 2015	27,044,960		31.95			6.91	729.7
	Vested and non-vested options expected to vest at March 31, 2015	24,835,981		$	31.54		6.83	$	680.2
	Exercisable options at March 31, 2015	10,632,080		$	23.32		5.32	$	378.6
Summary of status of non-vested options and changes during the year
		Options		Weighted
				Average Fair
				Value at Grant
				Date
	Non-vested options at January 1, 2015	16,440,560		$	7.98
	Options granted	92,000		10.3
	Options vested	(27,000	)	9.51
	Options forfeited	(92,680	)	7.94
	Non-vested options at March 31, 2015	16,412,880		7.99
Summary of activity in the option plans
		Three months ended
		March 31,
		2015			2014
	Total intrinsic value of stock options exercised	$	25.9		$	15.6
	Total fair value of stock options vested	0.3			0.1
Schedule of Restricted Stock Units Award Activity
		Restricted		Fair Value at			Weighted
		Shares		Grant Date			Average Remaining
							Amortization Term
							(in years)
	Restricted shares outstanding at January 1, 2015	18,340		$	47.72		0.39
	Restricted shares granted	692		54.96
	Restricted shares outstanding at March 31, 2015	19,032		47.98			0.15

Benefit_Plans_and_Other_Postre1

Benefit Plans and Other Postretirement Benefits (Tables)	3 Months Ended
	Mar. 31, 2015
Benefit Plans and Other Postretirement Benefits
Schedule of components of net pension expense
		Pension Benefits						Other Postretirement
								Benefits
		Three months ended March 31,
		2015			2014			2015		2014
	Service cost	$	2.3		$	2		$	—	$	—
	Interest cost	5.8			6			0.1		0.1
	Expected return on plan assets	(7.3		)	(7.1		)	—		—
	Amortization of prior service cost	0.6			0.7			—		—
	Amortization of net actuarial losses	6.5			4			0.1		0.1
	Net pension expense	$	7.9		$	5.6		$	0.2	$	0.2

Goodwill_and_Other_Intangible_1

Goodwill and Other Intangible Assets (Tables)	3 Months Ended
	Mar. 31, 2015
Goodwill and Other Intangible Assets
Summary of the Company's amortizable intangible assets
		March 31, 2015				December 31, 2014
		Gross Carrying		Accumulated		Gross Carrying		Accumulated
		Amount		Amortization		Amount		Amortization
	Customer relationships	$	302.9	$	99.4	$	299.8	$	92.3
	Proprietary technology	53.8		27.6		53.8		26.5
	License agreements	6.0		6.0		6.0		6.0
	Backlog and other	19.7		19.2		19.7		19.0
	Total	$	382.4	$	152.2	$	379.3	$	143.8

Debt_Tables

Debt (Tables)	3 Months Ended
	Mar. 31, 2015
Debt
Schedule of Debt
		March 31, 2015						December 31, 2014
		Carrying			Approximate			Carrying			Approximate
		Amount			Fair Value			Amount			Fair Value
	$1,500.0 Revolving Credit Facility	$	—		$	—		$	—		$	—
	$200.0 Credit Agreement	—			—			—			—
	$1,500.0 Commercial Paper Program	753			753			671			671
	1.55% Senior Notes due September 2017	374.7			375.8			374.7			373
	2.55% Senior Notes due January 2019	749.1			762.1			749.1			754.9
	3.125% Senior Notes due September 2021	374.7			382.9			374.7			375.3
	4.00% Senior Notes due February 2022	499.1			529.6			499.1			524.5
	Notes payable to foreign banks and other debt	8			8			5.3			5.3
	Total debt	2,758.60			2,811.40			2,673.90			2,704.00
	Less current portion	(1.6		)	(1.6		)	(1.6		)	(1.6		)
	Total long-term debt	$	2,757.00		$	2,809.80		$	2,672.30		$	2,702.40

Fair_Value_Measurements_Tables

Fair Value Measurements (Tables)	3 Months Ended
	Mar. 31, 2015
Fair Value Measurements
Fair values of financial and non-financial assets and liabilities
		Fair Value Measurements at March 31, 2015
		Total		Quoted Prices in Active		Significant		Significant
				Markets for Identical		Observable		Unobservable Inputs
				Assets (Level 1)		Inputs		(Level 3)
						(Level 2)
	Short-term investments	$	381.2	$	381.2	$	—	$	—
	Forward contracts	50.9		—		50.9		—
	Total	$	432.1	$	381.2	$	50.9	$	—
		Fair Value Measurements at December 31, 2014
		Total		Quoted Prices in Active		Significant		Significant
				Markets for Identical		Observable		Unobservable Inputs
				Assets (Level 1)		Inputs		(Level 3)
						(Level 2)
	Short-term investments	$	360.7	$	360.7	$	—	$	—
	Forward contracts	11.0		—		11.0		—
	Total	$	371.7	$	360.7	$	11.0	$	—

Basis_of_Presentation_and_Prin1

Basis of Presentation and Principles of Consolidation (Details)	3 Months Ended
	Mar. 31, 2015
Basis of Presentation and Principles of Consolidation
Stock split, conversion ratio	2

Inventories_Details

Inventories (Details) (USD $)	Mar. 31, 2015	Dec. 31, 2014
In Millions, unless otherwise specified
Inventories
Raw materials and supplies	$299.40	$299.40
Work in process	295.4	282.8
Finished goods	276.6	283.4
Inventories	$871.40	$865.60

Reportable_Business_Segments_D

Reportable Business Segments (Details) (USD $)	3 Months Ended
In Millions, unless otherwise specified	Mar. 31, 2015	Mar. 31, 2014
	segment
Reportable Business Segments
Number of reportable business segments	2
Segment reporting information
Net sales	$1,327.10	$1,246.10
Segment operating income	260.2	232.1
Interconnect Products and Assemblies
Segment reporting information
Segment operating income	271	242.8
Cable Products and Solutions
Segment reporting information
Segment operating income	10.2	10.6
Operating Segment
Segment reporting information
Net sales	1,327.10	1,246.10
Segment operating income	281.2	253.4
Operating Segment | Interconnect Products and Assemblies
Segment reporting information
Net sales	1,242.70	1,159.10
Operating Segment | Cable Products and Solutions
Segment reporting information
Net sales	84.4	87
Intersegment
Segment reporting information
Net sales	7.4	6.4
Intersegment | Interconnect Products and Assemblies
Segment reporting information
Net sales	2.3	1.1
Intersegment | Cable Products and Solutions
Segment reporting information
Net sales	$5.10	$5.30

Reportable_Business_Segments_D1

Reportable Business Segments (Details 2) (USD $)	3 Months Ended
In Millions, unless otherwise specified	Mar. 31, 2015	Mar. 31, 2014
Reconciliation of segment operating income to consolidated income before income taxes
Segment operating income	$260.20	$232.10
Interest expense	-17	-19.1
Stock-based compensation expense	-10.1	-9.3
Acquisition-related expenses		-2
Income before income taxes	247.3	217.1
Operating Segment
Reconciliation of segment operating income to consolidated income before income taxes
Segment operating income	281.2	253.4
Unallocated amount to segment
Reconciliation of segment operating income to consolidated income before income taxes
Interest expense	-17	-19.1
Interest Income	4.5	4.4
Stock-based compensation expense	-10.1	-9.3
Acquisition-related expenses		-2
Other costs, net	-11.3	-10.3
Income before income taxes	$247.30	$217.10

Changes_in_Equity_and_Noncontr2

Changes in Equity and Noncontrolling Interests (Details) (USD $)	3 Months Ended
In Millions, unless otherwise specified	Mar. 31, 2015	Mar. 31, 2014
Increase (Decrease) In Shareholders' Equity
Balance at beginning of period	$2,937.90	$2,880.10
Balance at beginning of period	-205.8
Net income	181.8	159.8
Other comprehensive income	-65.7	-15
Payments to shareholders of noncontrolling interests	-3.2	-1.1
Purchase of treasury stock	-62.2	-121.1
Stock options exercised, including tax benefit	19.3	15.3
Dividends declared	-38.8	-31.4
Stock-based compensation expense	10.1	9.3
Balance at end of period	2,979.20	2,895.90
Balance at end of period	-271.5
Common Stock
Increase (Decrease) In Shareholders' Equity
Balance at beginning of period (in shares)	309.8	316.4
Balance at beginning of period	0.3	0.3
Retirement of treasury stock (in shares)	-1.1	-2.8
Stock options exercised, including tax benefit (in shares)	0.7	0.7
Balance at end of period (in shares)	309.4	314.3
Balance at end of period	0.3	0.3
Additional Paid in Capital
Increase (Decrease) In Shareholders' Equity
Balance at beginning of period	659.4	489.8
Stock options exercised, including tax benefit	19.3	15.3
Stock-based compensation expense	10.1	9.3
Balance at end of period	688.8	514.4
Retained Earnings
Increase (Decrease) In Shareholders' Equity
Balance at beginning of period	2,453.50	2,424.40
Net income	179.8	158.5
Retirement of treasury stock	-62.2	-121.1
Dividends declared	-38.8	-31.4
Balance at end of period	2,532.30	2,430.40
Accumulated Other Comprehensive Loss
Increase (Decrease) In Shareholders' Equity
Balance at beginning of period	-205.8	-55
Other comprehensive income	-65.7	-14.6
Balance at end of period	-271.5	-69.6
Treasury Stock
Increase (Decrease) In Shareholders' Equity
Purchase of treasury stock	-62.2	-121.1
Retirement of treasury stock	62.2	121.1
Noncontrolling Interests
Increase (Decrease) In Shareholders' Equity
Balance at beginning of period	30.5	20.6
Net income	2	1.3
Other comprehensive income		-0.4
Payments to shareholders of noncontrolling interests	-3.2	-1.1
Balance at end of period	$29.30	$20.40

Earnings_Per_Share_Details

Earnings Per Share (Details) (USD $)	3 Months Ended
In Millions, except Share data, unless otherwise specified	Mar. 31, 2015	Mar. 31, 2014
Earnings Per Share
Net income attributable to Amphenol Corporation (in dollars)	$179.80	$158.50
Basic weighted average common shares outstanding	310,046,534	315,056,964
Effect of dilutive stock options (in shares)	7,939,111	7,297,348
Dilutive weighted average common shares outstanding	317,985,645	322,354,312
Earnings per share attributable to Amphenol Corporation shareholders:
Basic (in dollars per share)	$0.58	$0.50
Diluted (in dollars per share)	$0.57	$0.49
Anti-dilutive stock options, excluded from the computations of earning per share	3,146,450	5,529,266

StockBased_Compensation_Detail

Stock-Based Compensation (Details) (USD $)	3 Months Ended		0 Months Ended
In Millions, except Share data, unless otherwise specified	Mar. 31, 2015	Mar. 31, 2014	Dec. 31, 2014	31-May-14	Apr. 30, 2014
Share-based Compensation Arrangement by Share-based Payment Award
Expense incurred for stock-based compensation plans (in dollars)	$10.10	$9.30
Expense incurred for stock-based compensation plans, net of tax (in dollars)	7.6	6.8
Stock Options
Stock option activity
Options outstanding at the beginning of the period (in shares)	27,787,920		27,787,920
Options granted (in shares)	92,000
Options exercised (in shares)	-742,280
Options forfeited (in shares)	-92,680
Options outstanding at the end of the period (in shares)	27,044,960
Vested and non-vested options expected to vest at the end of the period (in shares)	24,835,981
Exercisable at the end of the period (in shares)	10,632,080
Weighted Average Exercise Price
Weighted average exercise price, options outstanding at the beginning of the period (in dollars per share)	$31.60		$31.60
Weighted average exercise price, options outstanding at the end of the period (in dollars per share)	$31.95
Weighted average exercise price, vested and non-vested options expected to vest (in dollars per share)	$31.54
Weighted average exercise price, exercisable (in dollars per share)	$23.32
Weighted Average Remaining Contractual Term
Weighted average remaining contractual term of options outstanding	6 years 10 months 28 days		7 years 1 month 2 days
Weighted average remaining contractual term of options vested options and non-vested expected to vest	6 years 9 months 29 days
Weighted average remaining contractual term of options exercisable	5 years 3 months 26 days
Aggregate Intrinsic Value
Aggregate intrinsic value of options outstanding (in dollars)	729.7		617.2
Aggregate intrinsic value of options, vested and non-vested options expected to vest (in dollars)	680.2
Aggregate intrinsic value of options exercisable (in dollars)	378.6
Status of the Company's non-vested options and changes during the year
Non-vested options at the beginning of the period (in shares)	16,440,560		16,440,560
Non-vested options, options granted (in shares)	92,000
Non-vested options, options vested (in shares)	-27,000
Non-vested options, options forfeited (in shares)	-92,680
Non-vested options at the end of the period (in shares)	16,412,880
Weighted Average Fair Value at Grant Date
Weighted average fair value at the grant date, options outstanding at the beginning of the period (in dollars per share)	$7.98		$7.98
Weighted average fair value at grant date, options granted (in dollars per share)	$10.30
Weighted average fair value at grant date, options vested (in dollars per share)	$9.51
Weighted average fair value at grant date, options forfeited (in dollars per share)	$7.94
Weighted average fair value at the grant date, options outstanding at the end of the period (in dollars per share)	$7.99
Total intrinsic value of stock options exercised (in dollars)	25.9	15.6
Total fair value of stock options vested (in dollars)	0.3	0.1
Total compensation cost related to non-vested options not yet recognized (in dollars)	$87.40
Weighted average expected amortization period	3 years 3 months 4 days
2000 Employee Option Plan
Share-based Compensation Arrangement by Share-based Payment Award
Number of additional stock options that can be granted (in shares)	0
2009 Employee Option Plan
Share-based Compensation Arrangement by Share-based Payment Award
Common Stock reserved for issuance				58,000,000	32,000,000
Shares available for the granting of additional stock options	24,979,260
2000 Employee Option Plan and 2009 Employee Option Plan
Share-based Compensation Arrangement by Share-based Payment Award
Options ratable vesting period	5 years
Options exercisable period	10 years
2004 Directors Option Plan
Share-based Compensation Arrangement by Share-based Payment Award
Shares available for the granting of additional stock options	140,000
Options ratable vesting period	3 years
Options exercisable period	10 years
Number of additional stock options expected to be granted (in shares)	0
2012 Directors Restricted Stock Plan
Share-based Compensation Arrangement by Share-based Payment Award
Shares available for the granting of additional stock options	171,230
Stock option activity
Options outstanding at the beginning of the period (in shares)	18,340		18,340
Options granted (in shares)	692
Options outstanding at the end of the period (in shares)	19,032
Weighted Average Fair Value at Grant Date
Weighted average fair value at the grant date, options outstanding at the beginning of the period (in dollars per share)	$47.72		$47.72
Weighted average fair value at grant date, options granted (in dollars per share)	$4.96
Weighted average fair value at the grant date, options outstanding at the end of the period (in dollars per share)	$47.98
Weighted average expected amortization period	1 month 24 days		4 months 21 days

Shareholders_Equity_Details

Shareholders' Equity (Details) (USD $)	1 Months Ended		3 Months Ended		1 Months Ended
In Millions, except Per Share data, unless otherwise specified	Mar. 31, 2015	Apr. 30, 2014	Mar. 31, 2015	Mar. 31, 2014	Apr. 30, 2015	Jan. 31, 2015	Sep. 30, 2014	Jun. 30, 2014
Quarterly dividend approved by Board prior to payment, per share (in dollars per share)							$0.13	$0.10
Dividends declared			$38.80	$31.40
Dividends paid	38.8	31.4	77.5
2015 Stock Repurchase Program
Number of shares authorized to be repurchased under the current open-market stock repurchase program					8.3	10
Repurchase of stock program, period						2 years
Number of shares repurchased under the current open-market stock repurchase program			1.1		0.6
Payments for shares repurchased under the current open-market stock repurchase program (in dollars)			$62.20		$34.80

Benefit_Plans_and_Other_Postre2

Benefit Plans and Other Postretirement Benefits (Details) (USD $)	3 Months Ended
In Millions, unless otherwise specified	Mar. 31, 2015	Mar. 31, 2014
Summary of the defined benefit pension plans and other post-retirement benefits
Contributions to U.S defined contribution plans by the Company, maximum percentage of eligible compensation	5.00%
Matching contributions to U.S defined contribution plans by the Company	$1.20	$0.90
Pension Benefits
Summary of the defined benefit pension plans and other post-retirement benefits
Service cost	2.3	2
Interest cost	5.8	6
Expected return on plan assets	-7.3	-7.1
Amortization of prior service cost	0.6	0.7
Amortization of net actuarial losses	6.5	4
Net pension expense	7.9	5.6
U.S. plans, Pension Benefits
Summary of the defined benefit pension plans and other post-retirement benefits
Estimated cash contribution to the Plans in 2015 based on current actuarial calculations	22
Other Postretirement Benefits
Summary of the defined benefit pension plans and other post-retirement benefits
Interest cost	0.1	0.1
Amortization of net actuarial losses	0.1	0.1
Net pension expense	$0.20	$0.20

Goodwill_and_Other_Intangible_2

Goodwill and Other Intangible Assets (Details) (USD $)	3 Months Ended
In Millions, unless otherwise specified	Mar. 31, 2015	Dec. 31, 2014
Goodwill
Goodwill	$2,594.50	$2,616.70
Decrease in goodwill, primarily as a result of an acquisition	22.2
Interconnect Products and Assemblies
Goodwill
Goodwill	2,470.80
Decrease in goodwill, primarily as a result of an acquisition	$59.80

Goodwill_and_Other_Intangible_3

Goodwill and Other Intangible Assets (Details 2) (USD $)	3 Months Ended
In Millions, unless otherwise specified	Mar. 31, 2015	Mar. 31, 2014	Dec. 31, 2014
Goodwill and Other Intangible Assets
Indefinite-lived trade name intangible asset	$52.30
Summary of the Company's amortizable intangible assets
Gross Carrying Amount	382.4		379.3
Accumulated Amortization	152.2		143.8
Weighted average useful lives of amortizable intangible assets	10 years
Amortization expense	8.4	8.3
Amortization expense estimated for each of the next five fiscal years
2015	33.3
2016	33.2
2017	32.8
2018	28.6
2019	24.5
Customer relationships
Summary of the Company's amortizable intangible assets
Gross Carrying Amount	302.9		299.8
Accumulated Amortization	99.4		92.3
Weighted average useful lives of amortizable intangible assets	10 years
Proprietary technology
Summary of the Company's amortizable intangible assets
Gross Carrying Amount	53.8		53.8
Accumulated Amortization	27.6		26.5
Weighted average useful lives of amortizable intangible assets	14 years
License agreements
Summary of the Company's amortizable intangible assets
Gross Carrying Amount	6		6
Accumulated Amortization	6		6
Weighted average useful lives of amortizable intangible assets	8 years
Backlog and other
Summary of the Company's amortizable intangible assets
Gross Carrying Amount	19.7		19.7
Accumulated Amortization	$19.20		$19
Weighted average useful lives of amortizable intangible assets	2 years

Debt_Details

Debt (Details) (USD $)	3 Months Ended
In Millions, unless otherwise specified	Mar. 31, 2015	Dec. 31, 2014
Debt
Total debt, Carrying Amount	$2,758.60	$2,673.90
Less current portion	-1.6	-1.6
Long-term debt, less current portion	2,757	2,672.30
Total debt, Approximate Fair Value	2,811.40	2,704
Less short-term debt, Approximate Fair Value	-1.6	-1.6
Long-term debt, Approximate Fair Value	2,809.80	2,702.40
Revolving Credit Facility
Debt
Maximum borrowing capacity	1,500
Credit Agreement
Debt
Maximum borrowing capacity	200
Base of interest spread	LIBOR
Commercial Paper Program
Debt
Total debt, Carrying Amount	753	671
Total debt, Approximate Fair Value	753	671
Maximum maturity term	397 days
Maximum amount outstanding during period	1,500
Average Interest Rate (as a percent)	0.63%
Senior Notes
Debt
Redemption price as a percentage of principal amount	100.00%
1.55% Senior Notes due September 2017
Debt
Stated interest rate (as a percent)	1.55%	1.55%
Total debt, Carrying Amount	374.7	374.7
Total debt, Approximate Fair Value	375.8	373
2.55% Senior Notes due January 2019
Debt
Stated interest rate (as a percent)	2.55%	2.55%
Total debt, Carrying Amount	749.1	749.1
Total debt, Approximate Fair Value	762.1	754.9
3.125% Senior Notes due September 2021
Debt
Stated interest rate (as a percent)	3.13%	3.13%
Total debt, Carrying Amount	374.7	374.7
Total debt, Approximate Fair Value	382.9	375.3
4.00% Senior Notes due February 2022
Debt
Stated interest rate (as a percent)	4.00%	4.00%
Total debt, Carrying Amount	499.1	499.1
Total debt, Approximate Fair Value	529.6	524.5
Notes payable to foreign banks and other debt
Debt
Total debt, Carrying Amount	8	5.3
Total debt, Approximate Fair Value	$8	$5.30

Fair_Value_Measurements_Detail

Fair Value Measurements (Details) (USD $)	Mar. 31, 2015	Dec. 31, 2014
In Millions, unless otherwise specified
Fair value of assets and liabilities measured on recurring basis
Short-term Investments	$381.20	$360.70
Fair value measurements recurring basis | Level 1
Fair value of assets and liabilities measured on recurring basis
Short-term Investments	381.2	360.7
Total	381.2	360.7
Fair value measurements recurring basis | Level 2
Fair value of assets and liabilities measured on recurring basis
Forward contracts	50.9	11
Total	50.9	11
Fair value measurements recurring basis | Total
Fair value of assets and liabilities measured on recurring basis
Short-term Investments	381.2	360.7
Forward contracts	50.9	11
Total	$432.10	$371.70

Income_Taxes_Details

Income Taxes (Details) (USD $)	3 Months Ended
In Millions, unless otherwise specified	Mar. 31, 2015	Mar. 31, 2014
Income Taxes
Effective tax rate (as a percent)	26.50%	26.40%
Effective tax rate excluding the net impact of separately stated acquisition-related expenses (as a percent)	26.50%	26.50%
Liability for unrecognized tax benefits, including penalties and interest, which if recognized would impact the effective tax rate	$18.80
Unrecognized tax benefits, anticipated adjustment for changing facts and circumstances, over the next twelve month period	$1