A. O. Smith (AOS) 10-Q 4 Nov 13 2013 Q3 Quarterly report Financial data

Document_and_Entity_Informatio

Document and Entity Information	9 Months Ended
	Sep. 30, 2013	Oct. 31, 2013	Oct. 31, 2013
		Common Stock Class A	Common Stock
Document Information [Line Items]	'	'	'
Document Type	'10-Q	'	'
Amendment Flag	'false	'	'
Document Period End Date	30-Sep-13	'	'
Document Fiscal Year Focus	'2013	'	'
Document Fiscal Period Focus	'Q3	'	'
Trading Symbol	'AOS	'	'
Entity Registrant Name	'SMITH A O CORP	'	'
Entity Central Index Key	'0000091142	'	'
Current Fiscal Year End Date	'--12-31	'	'
Entity Filer Category	'Large Accelerated Filer	'	'
Entity Common Stock, Shares Outstanding	'	13,225,946	77,998,261

Condensed_Consolidated_Stateme

Condensed Consolidated Statements of Earnings (USD $)	3 Months Ended		9 Months Ended
In Millions, except Per Share data, unless otherwise specified	Sep. 30, 2013	Sep. 30, 2012	Sep. 30, 2013	Sep. 30, 2012
Net sales	$536.20	$462.20	$1,594.90	$1,415
Cost of products sold	339.6	305.4	1,021	948.6
Gross profit	196.6	156.8	573.9	466.4
Selling, general and administrative expenses	133.7	111.5	385.3	325.7
Contingent consideration adjustment	'	-6.4	'	-6.4
Restructuring, impairment and settlement expense, net	1.3	'	7.2	'
Interest expense	1.4	1.9	4.5	7.1
Other income	-1.1	-2.2	-2.8	-32.5
Earnings before income taxes	61.3	52	179.7	172.5
Provision for income taxes	15.1	15	52.4	53.1
Net Earnings	$46.20	$37	$127.30	$119.40
Net Earnings Per Share of Common Stock	$0.50	$0.40	$1.38	$1.30
Diluted Net Earnings Per Share of Common Stock	$0.50	$0.40	$1.37	$1.28
Dividends Per Share of Common Stock	$0.12	$0.10	$0.34	$0.26

Condensed_Consolidated_Stateme1

Condensed Consolidated Statements of Comprehensive Earnings (USD $)	3 Months Ended		9 Months Ended
In Millions, unless otherwise specified	Sep. 30, 2013	Sep. 30, 2012	Sep. 30, 2013	Sep. 30, 2012
Net earnings	$46.20	$37	$127.30	$119.40
Other comprehensive earnings (loss)	'	'	'	'
Foreign currency translation adjustments	3.6	6.1	-2	3.1
Unrealized net (loss) gain on cash flow derivative instruments, less related income tax benefit (provision) of $0.3 and $0.4 in 2013, $0.1 and $(0.2) in 2012	-0.5	-0.1	-0.7	0.3
Adjustment to pension liability gain (loss) less related income tax (provision) benefit of $(4.0) and $(11.9) in 2013 and $1.5 and $1.5 in 2012	6.3	-3.4	13.9	-3.4
Reversal of unrealized gain on investments less related income tax benefit of $0.7 in 2012	'	'	'	-1.2
Comprehensive Earnings	$55.60	$39.60	$138.50	$118.20

Condensed_Consolidated_Stateme2

Condensed Consolidated Statements of Comprehensive Earnings (Parenthetical) (USD $)	3 Months Ended		9 Months Ended
In Millions, unless otherwise specified	Sep. 30, 2013	Sep. 30, 2012	Sep. 30, 2013	Sep. 30, 2012
Unrealized net (loss) gain) on cash flow derivative instruments, related income tax benefit (provision)	$0.30	$0.10	$0.40	($0.20)
Adjustment to pension liability gain less, related income tax provision	-4	1.5	-11.9	1.5
Reversal of unrealized gain on investments,related tax benefit	'	'	'	$0.70

Condensed_Consolidated_Balance

Condensed Consolidated Balance Sheets (USD $)	Sep. 30, 2013	Dec. 31, 2012
In Millions, unless otherwise specified
Assets	'	'
Cash and cash equivalents	$374.10	$266.90
Marketable securities	102.7	196
Receivables	436	425.4
Inventories	189.5	163.4
Deferred income taxes	36.9	33.2
Other current assets	25.8	22.3
Total Current Assets	1,165	1,107.20
Property, plant and equipment	728	680.7
Less accumulated depreciation	356.3	335
Net property, plant and equipment	371.7	345.7
Goodwill	434.9	435.4
Other intangibles	329.2	338.7
Other assets	48.1	38.2
Total Assets	2,348.90	2,265.20
Liabilities	'	'
Trade payables	344.5	328.9
Accrued payroll and benefits	55	46.5
Accrued liabilities	75.3	61.8
Product warranties	46	43.2
Long-term debt due within one year	14.4	18.6
Total Current Liabilities	535.2	499
Long-term debt	213.4	225.1
Pension liabilities	188.1	190.1
Other liabilities	159.6	156.9
Total Liabilities	1,096.30	1,071.10
Stockholders' Equity	'	'
Class A Common Stock, $5 par value: authorized 14,000,000 shares; issued 13,299,752 and 13,309,876	66.5	66.6
Common Stock, $1 par value: authorized 120,000,000 shares; issued 82,054,070 and 82,043,946	82.1	82
Capital in excess of par value	588.3	580.5
Retained earnings	950.7	855.1
Accumulated other comprehensive loss	-309.3	-320.5
Treasury stock at cost	-125.7	-69.6
Total Stockholders' Equity	1,252.60	1,194.10
Total Liabilities and Stockholders' Equity	$2,348.90	$2,265.20

Condensed_Consolidated_Balance1

Condensed Consolidated Balance Sheets (Parenthetical) (USD $)	Sep. 30, 2013	Dec. 31, 2012
Class A Common Stock, par value	$5	$5
Class A Common Stock, authorized	14,000,000	14,000,000
Class A Common Stock, issued	13,299,752	13,309,876
Common Stock, par value	$1	$1
Common Stock, authorized	120,000,000	120,000,000
Common Stock, shares issued	82,054,070	82,043,946

Condensed_Consolidated_Stateme3

Condensed Consolidated Statements of Cash Flows (USD $)	9 Months Ended
In Millions, unless otherwise specified	Sep. 30, 2013	Sep. 30, 2012
Operating Activities	'	'
Net earnings	$127.30	$119.40
Adjustments to reconcile net earnings to cash provided by (used in) operating activities:	'	'
Depreciation and amortization	42.2	40.4
Pension expense	20.9	10.3
Loss on disposal of assets	0.2	0.8
Gain on sale of investments	'	-27.2
Net changes in operating assets and liabilities, net of acquisitions:	'	'
Current assets and liabilities	-2.7	-45.1
Noncurrent assets and liabilities	1.9	2.4
Cash Provided by Operating Activities - continuing operations	189.8	101
Cash Used in Operating Activities - discontinued operations	-1.8	-27.3
Cash Provided by Operating Activities	188	73.7
Investing Activities	'	'
Capital expenditures	-65.7	-44.5
Acquisition of business	-4	'
Investments in marketable securities	-63.8	-237.8
Net proceeds from sale of securities	158.4	227.8
Cash Provided by (Used in) Investing Activities	24.9	-54.5
Financing Activities	'	'
Long-term debt retired	-16.5	-183.1
Common stock repurchases	-66.5	-9.7
Net proceeds from stock option activity	8.9	13.8
Dividends paid	-31.6	-24
Cash Used in Financing Activities	-105.7	-203
Net increase (decrease) in cash and cash equivalents	107.2	-183.8
Cash and cash equivalents - beginning of period	266.9	463.4
Cash and Cash Equivalents - End of Period	$374.10	$279.60

Basis_of_Presentation

Basis of Presentation	9 Months Ended
	Sep. 30, 2013
Basis of Presentation	'
	1	Basis of Presentation
	The accompanying unaudited condensed consolidated financial statements have been prepared in accordance with accounting principles generally accepted in the United States (GAAP) for interim financial information and pursuant to the rules and regulations of the Securities and Exchange Commission (SEC). Accordingly, they do not include all of the information and footnotes required for complete financial statements. In the opinion of management, all adjustments (consisting of normal recurring accruals) considered necessary for a fair presentation have been included. Operating results for the three and nine month periods ended September 30, 2013 are not necessarily indicative of the results expected for the full year. It is suggested that the accompanying condensed consolidated financial statements be read in conjunction with the audited consolidated financial statements and the notes thereto included in the company’s latest Annual Report on Form 10-K filed with the SEC on February 27, 2013.
	Except where otherwise indicated, amounts reflected in the consolidated financial statements or the notes thereto relate to the company’s continuing operations.
	On April 15, 2013, the company’s stockholders approved a proposal to increase the company’s authorized shares of Common Stock and the company’s board of directors declared a two-for-one stock split of the company’s Class A Common Stock and Common Stock (including treasury shares) in the form of a 100 percent stock dividend to stockholders of record on April 30, 2013 and payable on May 15, 2013. All references in the financial statements and footnotes to the number of shares outstanding, price per share, per share amounts and stock based compensation data have been recast to reflect the split for all periods presented.
	Certain other prior year amounts have been reclassified to conform to the 2013 presentation.
	Recent Accounting Pronouncements
	In July 2012, the Financial Accounting Standards Board (FASB) issued Accounting Standards Update (ASU) 2012-02, “Testing Indefinite-Lived Intangible Assets for Impairment.” ASU 2012-02 allows an entity to first assess qualitative factors in determining whether events and circumstances indicate that it is more-likely-than not that an indefinite-lived intangible asset is impaired. If an entity determines that it is not more-likely-than not that the indefinite-lived intangible asset is impaired, then the entity is not required to perform a quantitative impairment test. ASU 2012-02 is effective for the year ending December 31, 2013. The adoption of this ASU will not have an impact on the company’s consolidated financial condition, results of operations or cash flows.
	In February 2013, the FASB issued ASU No. 2013-02, “Comprehensive Income (Topic 220): Reporting of Amounts Reclassified out of Accumulated Other Comprehensive Income.” ASU No. 2013-02 sets requirements for presentation for significant items reclassified out of accumulated other comprehensive income to net income in reporting periods presented. ASU 2013-02 was effective prospectively beginning with the quarter ended March 31, 2013. The adoption of this guidance did not have an impact on the company’s financial
	condition or results of operations but required additional disclosure in the notes to the company’s financial statements. The company complied with the disclosure requirements of ASU 2013-02 for the three and nine months ended September 30, 2013.

Acquisition

Acquisition	9 Months Ended
	Sep. 30, 2013
Acquisition	'
	2	Acquisition
	On February 14, 2013, the company acquired 100 percent of the shares of MiM Isitma Sogutma Havalandirma ve Aritma Sistemleri San. Tic. A.S. (MiM), a privately-held Turkish water treatment company. The addition of MiM expanded the company’s product offerings and gives the company access to Eastern Europe and Black Sea region water treatment markets. MiM is included in the Rest of World segment.
	The company paid an aggregate cash purchase price of $4.0 million, net of cash received of $1.9 million. In addition the company assumed debt of $1.7 million and recorded contingent consideration of $1.1 million.
	The fair value of the purchase price resulted in an allocation to acquired intangible assets totaling $4.1 million of which $2.3 million has been assigned to customer lists which are being amortized over ten years.
	MiM’s results of operations have been included in the company’s financial statements from February 14, 2013, the date of acquisition. Revenues and pre-tax results associated with MiM included in results of operations for the three and nine months ended September 30, 2013 are not material to the company’s net sales or pre-tax earnings.

Restructuring_Impairment_and_S

Restructuring, Impairment and Settlement Expense - Net	9 Months Ended
	Sep. 30, 2013
Restructuring, Impairment and Settlement Expense - Net	'
	3	Restructuring, Impairment and Settlement Expense - Net
	During the three months ended March 31, 2013, the company announced the move of its manufacturing operations from its Fergus, Ontario facility to other North American facilities. During the three months ended September 30, 2013, the company recognized $1.3 million of pre-tax restructuring and impairment expenses, comprised of $1.3 million of equipment relocation costs and $0.3 million of inventory obsolescence reserves and a reduction in severance costs of $0.3 million, as well as a corresponding $0.3 million income tax benefit related to the expenses. For the nine months ended September 30, 2013, the company has recognized $18.2 million of pre-tax restructuring and impairment expenses, comprised of $7.5 million of severance costs, $1.9 million for inventory obsolescence reserves, impairment charges related to long-lived assets totaling $7.5 million and $1.3 million for equipment relocation costs, as well as a corresponding $4.6 million income tax benefit related to the expenses. The majority of the consolidation of operations occurred in the second quarter of 2013.
	On March 11, 2013, the company entered into a settlement agreement with a former supplier of a North American subsidiary regarding previous overcharges and warranty costs. The terms of the settlement agreement resulted in an $11.0 million cash payment to the company, a pre-tax gain of $11.0 million and a related $4.3 million income tax expense.
	The following table presents an analysis of the company’s restructuring, impairment and settlement reserves as of and for the nine months ended September 30, 2013:
			(dollars in millions)
			Inventory		Severance			Asset			Equipment		Settlement			Total
			Obsolescence		Costs			Impairment			Relocation		Income
											Costs
	Balance at December 31, 2012		$	-	$	-		$	-		$	-	$	-		$	-
	Expense (income) recognized			-		5.2			7.5			-		(11.0	)		1.7
	Asset write-down			-		-			(7.5	)		-		-			(7.5	)
	Settlement income			-		-			-			-		11			11
	Balance at March 31, 2013		$	-	$	5.2		$	-		$	-	$	-		$	5.2
	Expense recognized			1.6		2.6			-			-		-			4.2
	Severance payments			-		(0.9	)		-			-		-			(0.9	)
	Balance at June 30, 2013		$	1.6	$	6.9		$	-			-	$	-		$	8.5
	Expense (income) recognized			0.3		(0.3	)		-			1.3		-			1.3
	Severance payments			-		(4.2	)		-			-		-			(4.2	)
	Balance at September 30, 2013		$	1.9	$	2.4		$	-		$	1.3	$	-		$	5.6

Inventories

Inventories	9 Months Ended
	Sep. 30, 2013
Inventories	'
	4	Inventories
	The following table presents the components of the company’s inventory balances:
			(dollars in millions)
			September 30,			December 31,
			2013			2012
	Finished products		$	97.2		$	74.4
	Work in process			12			12
	Raw materials			103.3			100
				212.5			186.4
	LIFO reserve			(23.0	)		(23.0	)
			$	189.5		$	163.4

LongTerm_Debt

Long-Term Debt	9 Months Ended
	Sep. 30, 2013
Long-Term Debt	'
	5	Long-Term Debt
	The company has a $400 million multi-currency revolving credit agreement with eight banks. The facility expires on December 12, 2017 and has an accordion provision which allows it to be increased up to $500 million if certain conditions (including lender approval) are satisfied. Interest rates on borrowings under the facility are determined in part based upon the company’s leverage ratio.
	Borrowings under bank credit lines and commercial paper borrowings are supported by the $400 million revolving credit agreement. As a result of the long-term nature of this facility, the commercial paper and credit line borrowings are classified as long-term debt at September 30, 2013.

Product_Warranties

Product Warranties	9 Months Ended
	Sep. 30, 2013
Product Warranties	'
	6	Product Warranties
	The company offers warranties on the sales of certain of its products and records an accrual for the estimated future claims. The following table presents the company’s warranty liability activity for each of the three first three month periods in 2013 and 2012 (dollars in millions):
			(dollars in millions)
			2013			2012
	Balance at January 1,			$129.60			$131.90
	Expense			15			15.4
	Claims settled			(15.7	)		(15.3	)
	Balance at March 31,			$128.90			$132.00
	Expense			16.7			14.9
	Claims settled			(15.8	)		(14.9	)
	Balance at June 30,			129.8			132
	Expense			15.5			12.4
	Claims settled			(13.6	)		(11.8	)
	Balance at September 30,			$131.70			$132.60

Earnings_Per_Share_of_Common_S

Earnings Per Share of Common Stock	9 Months Ended
	Sep. 30, 2013
Earnings Per Share of Common Stock	'
	7	Earnings Per Share of Common Stock
	The numerator for the calculation of basic and diluted earnings per share is net earnings. The following table sets forth the computation of basic and diluted weighted-average shares used in the earnings per share calculations:
			Three Months Ended				Nine Months Ended
			September 30,				September 30,
			2013		2012		2013		2012
	Denominator for basic earnings per share - weighted average shares			92,050,932		92,387,904		92,417,352		92,381,930
	Effect of dilutive stock options and share units			677,129		750,280		629,201		705,766
	Denominator for diluted earnings per share			92,728,061		93,138,184		93,046,553		93,087,696

Stock_Based_Compensation

Stock Based Compensation	9 Months Ended
	Sep. 30, 2013
Stock Based Compensation	'
	8	Stock Based Compensation
	The company adopted the A. O. Smith Combined Incentive Compensation Plan (the “plan”) effective January 1, 2007. The plan was reapproved on April 16, 2012. The plan is a continuation of the A. O. Smith Combined Executive Incentive Compensation Plan which was originally approved by stockholders in 2002. The number of shares available for granting of options, restricted stock or share units under the plan at September 30, 2013 was 2,759,070. Upon stock option exercise or share unit vesting, shares are issued from treasury stock.
	Total stock based compensation cost recognized in the three months ended September 30, 2013 and 2012 was $2.4 million and $1.5 million, respectively. Total stock based compensation cost recognized in the nine month periods ended September 30, 2013 and 2012 was $8.8 million and $5.3 million, respectively.
	Stock Options
	The stock options granted in the nine months ended September 30, 2013 and 2012 have three year pro-rata vesting from the date of grant. Stock options are issued at exercise prices equal to the fair value of Common Stock on the date of grant. For active employees, all options granted in 2013 and 2012 expire ten years after date of grant. Options are expensed ratably over the three-year vesting period. Stock based compensation cost attributable to stock options in the three months ended September 30, 2013 and 2012 was $1.1 million and $0.7 million, respectively. Stock based compensation expense attributable to stock options in the nine months ended September 30, 2013 and 2012 was $4.1 million and $2.5 million, respectively. Included in the stock option expense for the nine months ended September 30, 2013 and 2012 was expense associated with the accelerated vesting of stock option awards for certain employees who either are retirement eligible or become retirement eligible during the vesting period.
	Changes in option awards, all of which relate to Common Stock, were as follows for the nine months ended September 30, 2013:
			Weighted-Average			Nine Months					Average		Aggregate
			Per Share			Ended					Remaining		Intrinsic Value
			Exercise Price			September 30, 2013					Contractual		(dollars in
											Life		millions)
	Outstanding at January 1, 2013		$	16.72					1,530,734
	Granted			35.03					357,100
	Exercised			13.13					(363,862	)
	Forfeited			30.66					(3,732	)
	Outstanding at September 30, 2013			21.84					1,520,240			8 years	$	35.5
	Exercisable at September 30, 2013		$	15.83					820,614			7 years	$	24.1
	The weighted-average fair value per option at the date of grant during the nine months ended September 30, 2013 and 2012 using the Black-Scholes option-pricing model was $12.48 and $8.26, respectively. Assumptions were as follows:
			Nine Months Ended September 30,
			2013					2012
	Expected life (years)			6.1					6.2
	Risk-free interest rate			2	%				2	%
	Dividend yield			1.1	%				1.4	%
	Expected volatility			38.4	%				39.4	%
	The expected life is based on historical exercise behavior and the projected exercise of unexercised stock options. The risk free interest rate is based on the U.S. Treasury yield curve in effect on the date of grant for the expected life of the option. The actual dividend yield is based on the actual annual dividends divided by the grant date market value of the company’s common stock. The expected volatility is based on the historical volatility of the company’s common stock.
	Restricted Stock and Share Units
	Participants may also be awarded shares of restricted stock or share units under the plan. The company granted 142,900 and 167,800 share units under the plan in the nine months ended September 30, 2013 and 2012, respectively. The share units were valued at $4.9 million and $3.9 million at the dates of issuance in 2013 and 2012, respectively, based on the company’s stock price at the dates of grant and those amounts are recognized as compensation expense ratably over the three-year vesting period. Share based compensation expense attributable to share units of $1.2 million and $0.8 million was recognized in the three months ended September 30, 2013 and 2012, respectively. Share based compensation expense attributable to share units of $4.7 million and $2.8 million was recognized in the nine months ended September 30, 2013 and 2012, respectively. Share based compensation expense recognized in the nine months ended September 30, 2013 and 2012 included expense associated with accelerated vesting of share unit awards for certain employees who either are retirement eligible or will become retirement eligible during the vesting period.
	A summary of share unit activity under the plan is as follows:
			Number of Units			Weighted-Average
						Grant Date Value
	Issued and unvested at January 1, 2013			469,012		$	19.37
	Granted			142,900			34.63
	Vested			(157,732	)		13.97
	Forfeited			(9,350	)		27.38
	Issued and unvested at September 30, 2013			444,830		$	26.02

Pensions

Pensions	9 Months Ended
	Sep. 30, 2013
Pensions	'
	9	Pensions
	The following table presents the components of the company’s net pension expense:
			(dollars in millions)
			Three Months Ended						Nine Months Ended
			September 30,						September  30,
			2013			2012			2013			2012
	Service cost		$	2.3		$	1.9		$	6.8		$	5.8
	Interest cost			9.9			10.9			29.6			32.6
	Expected return on plan assets			(15.5	)		(17.2	)		(46.3	)		(51.6	)
	Amortization of unrecognized loss			10.6			8.1			31.5			24.1
	Amortization of prior service cost			(0.3	)		(0.2	)		(0.7	)		(0.6	)
	Defined benefit plan expense		$	7		$	3.5		$	20.9		$	10.3
	The company did not make a contribution to its U.S. pension plan in 2012 and does not anticipate making a contribution in 2013.

Operations_by_Segment

Operations by Segment	9 Months Ended
	Sep. 30, 2013
Operations by Segment	'
	10	Operations by Segment
	The company is comprised of two reporting segments: North America and Rest of World. The Rest of World segment is primarily comprised of China, India, Europe and the Middle East. Both segments manufacture and market comprehensive lines of residential gas, gas tankless and electric water heaters and commercial water heating equipment. Both segments primarily serve their respective regions of the world. The North America segment also manufactures and markets specialty commercial water heating equipment, condensing and non-condensing boilers and water system tanks. The Rest of World segment also manufactures and markets water treatment products, primarily in Asia.
	The company’s operations by segment are as follows:
			(dollars in millions)
			Three Months Ended						Nine Months Ended
			September 30,						September  30,
			2013			2012			2013			2012
	Net sales
	North America		$	370.1		$	335.7		$	1,137.80		$	1,054.90
	Rest of World			175.2			133.8			483			385.3
	Inter-segment sales			(9.1	)		(7.3	)		(25.9	)		(25.2	)
			$	536.2		$	462.2		$	1,594.90		$	1,415.00
	Operating earnings
	North America (1) (3) (4) (5)		$	51.5		$	50.7		$	160.6		$	144.1
	Rest of World			26.9			12.7			67.6			39.2
	Inter-segment earnings elimination			(0.1	)		-			(0.1	)		-
				78.3			63.4			228.1			183.3
	Corporate expense (2) (6)			(15.6	)		(9.5	)		(43.9	)		(3.7	)
	Interest expense			(1.4	)		(1.9	)		(4.5	)		(7.1	)
	Earnings before income taxes			61.3			52			179.7			172.5
	Provision for income taxes			15.1			15			52.4			53.1
	Net earnings		$	46.2		$	37		$	127.3		$	119.4
	(1) Includes non-operating pension costs of:		$	(3.9	)	$	(1.2	)	$	(11.1	)	$	(3.3	)
	(2) Includes non-operating pension costs of:			(1.3	)		(0.6	)		(3.7	)		(1.8	)
	(3) Includes settlement income of:			-			-			11			-
	(4) Includes restructuring and impairment expenses of:			(1.3	)		-			(18.2	)		-
	(5) Includes contingent consideration adjustment of:			-			6.4			-			6.4
	(6) Includes net gain on shares of Regal Beloit Corporation stock of:			-			-			-			27.2

Fair_Value_Measurements

Fair Value Measurements	9 Months Ended
	Sep. 30, 2013
Fair Value Measurements	'
	11	Fair Value Measurements
	Accounting Standards Codification (ASC) 820 Fair Value Measures and Disclosures, among other things, defines fair value, establishes a consistent framework for measuring fair value and expands disclosure for each major asset and liability category measured at fair value on either a recurring basis or nonrecurring basis. ASC 820 clarifies that fair value is an exit price, representing the amount that would be received to sell an asset or paid to transfer a liability in an orderly transaction between market participants. As such, fair value is a market-based measurement that should be determined based on assumptions that market participants would use in pricing an asset or liability. As a basis for considering such
	assumptions, ASC 820 establishes a three-tier fair value hierarchy, which prioritizes the inputs used in measuring fair value as follows: (Level 1) observable inputs such as quoted prices in active markets; (Level 2) inputs, other than the quoted prices in active markets, that are observable either directly or indirectly; and (Level 3) unobservable inputs in which there is little or no market data, which require the reporting entity to develop its own assumptions.
	Assets and liabilities measured at fair value are based on the market approach which are prices and other relevant information generated by market transactions involving identical or comparable assets or liabilities.
	Assets and liabilities measured at fair value on a recurring basis are as follows:
			(dollars in millions)
	Fair Value Measurement Using		September 30, 2013		December 31, 2012
	Quoted prices in active markets for identical assets (Level 1)		$	102.8	$	197.2
	There were no changes in the company’s valuation techniques used to measure fair values on a recurring basis during the nine months ended September 30, 2013.

Derivative_Instruments

Derivative Instruments	9 Months Ended
	Sep. 30, 2013
Derivative Instruments	'
	12	Derivative Instruments
	ASC 815 Derivatives and Hedging as amended, requires that all derivative instruments be recorded on the balance sheet at fair value and establishes criteria for designation and effectiveness of the hedging relationships. The accounting for changes in the fair value of a derivative instrument depends on whether it has been designated and qualifies as a part of a hedging relationship and, further, on the type of hedging relationship. For those derivative instruments that are designated and qualify as hedging instruments, the company must designate the hedging instrument, based upon the exposure hedged, as a fair value hedge, cash flow hedge, or a hedge of a net investment in a foreign operation.
	Equity Collar Contract
	On August 22, 2011, the company sold its Electrical Products Company (EPC) to Regal Beloit Corporation (RBC) and received approximately 2.83 million shares of RBC common stock. The RBC share price appreciated in the first quarter of 2011 during which the company entered into an equity collar contract for 50 percent of the RBC shares it owned to protect a portion of that appreciation. The put strike price of the collar was $63.29 and the call strike price of the collar was $77.32. The collar did not qualify for hedge accounting and therefore was adjusted to fair value on a quarterly basis through earnings from continuing operations. The mark to market accounting for the RBC shares and hedge continued until the equity collar contract expired in March of 2012 with no value.
	The company designates that all of its hedging instruments, except for its equity collar contract relating to RBC shares, are cash flow hedges. For derivative instruments that are designated and qualify as a cash flow hedge (i.e., hedging the exposure to variability in expected future cash flows that is attributable to a particular risk), the effective portion of the gain or loss on the derivative instrument is reported as a component of other comprehensive income (OCI), net of tax, and is reclassified into earnings in the same line item associated with the forecasted transaction and in the same period or periods during which the hedged transaction affects earnings. The amount by which the cumulative change in the value of the hedge more than offsets the cumulative change in the value of the hedged item (i.e., the ineffective portion) is recorded in earnings, net of tax, in the period the ineffectiveness occurs.
	The company utilizes certain derivative instruments to enhance its ability to manage currency as well as raw materials price risk. The company had previously utilized a derivative instrument to manage equity investment volatility. Derivative instruments are entered into for periods consistent with the related underlying exposures and do not constitute positions independent of those exposures. The company does not enter into contracts for speculative purposes. The contracts are executed with major financial institutions with no credit loss anticipated for failure of the counterparties to perform.
	Foreign Currency Forward Contracts
	The company is exposed to foreign currency exchange risk as a result of transactions in currencies other than the functional currency of certain subsidiaries. The company utilizes foreign currency forward purchase and sale contracts to manage the volatility associated with foreign currency purchases, sales and certain intercompany transactions in the normal course of business.
	Gains and losses on these instruments are recorded in accumulated other comprehensive loss, net of tax, until the underlying transaction is recorded in earnings. When the hedged item is realized, gains or losses are reclassified from accumulated other comprehensive loss to the statement of earnings. The assessment of effectiveness for forward contracts is based on changes in the forward rates. These hedges have been determined to be effective.
	The majority of the amounts in accumulated other comprehensive loss for cash flow hedges as of September 30, 2013 is expected to be reclassified into earnings within one year and all of the hedges will be reclassified into earnings no later than December 31, 2014.
	The following table summarizes, by currency, the contractual amounts of the company’s foreign currency forward contracts:
			(dollars in millions)
			September 30,
			2013								2012
			Buy				Sell				Buy				Sell
	British pound		$	-			$	1.9			$	-			$	2.2
	Canadian dollar			-				67.1				-				39.2
	Chinese renminbi			-				-				4.6				-
	Euro			14.8				2.2				29.9				2.3
	Indian rupee			1.5				-				-				-
	Mexican peso			15.3				-				11.6				-
	Total		$	31.6			$	71.2			$	46.1			$	43.7
	Commodity Futures Contracts
	In addition to entering into supply arrangements in the normal course of business, the company also enters into futures contracts to fix the cost of certain raw material purchases, principally copper, with the objective of minimizing changes in cost due to market price fluctuations. The hedging strategy for achieving this objective is to purchase commodity futures contracts on the open market of the London Metals Exchange (LME) or over the counter contracts based on the LME.
	The minimal after-tax loss on the effective portion of the contracts as of September 30, 2013 was recorded in accumulated other comprehensive loss, and will be reclassified into cost of products sold in the period in which the underlying transaction is recorded in earnings. The effective portion of the contracts will be reclassified within one year. Commodity hedges outstanding at September 30, 2013 involve a total of approximately 0.2 million pounds of copper.
	The impact of derivative contracts on the company’s financial statements is as follows:
	Fair value of derivatives designated as hedging instruments under ASC 815:
					(dollars in millions)
			Balance Sheet Location		September 30,				December 31,
					2013				2012
	Foreign currency contracts		Accrued liabilities		$	(0.3	)		$	(0.5	)
			Other current assets			0.4				1.7
	Total derivatives designated as hedging instruments				$	0.1			$	1.2
	The effect of derivatives designated as hedging instruments under ASC 815 on the Statement of Earnings:
	Three Months Ended September 30 (dollars in millions):
	Derivatives in				Amount of												Location of	Amount of						Location of	Amount of
	ASC 815 cash				gain/(loss)												gain/(loss)	gain/(loss)						gain/(loss)	gain/(loss)
	flow hedging				recognized in												reclassified from	reclassified from						recognized in	recognized
	relationships				OCI on												Accumulated OCI	Accumulated OCI						earnings on	in
					derivative												into earnings	into earnings						derivative	earnings on
					(effective												(effective portion)	(effective portion)						(ineffective	a
					portion)																			portion)	derivative
																									(ineffective
																									portion)
					2013								2012					2013			2012				2013		2012
	Commodities contracts				$	-							$	(0.1	)		Cost of	$	(0.1	)	$	-		Cost of	$	-	$	-
																	products							products
																	sold							sold
	Foreign currency contracts					(0.8	)							(0.3	)		Cost of		0.3			(0.2	)	N/A		-		-
																	products
																	sold
					$	(0.8	)						$	(0.4	)			$	0.2		$	(0.2	)		$	-	$	-
	Nine Months Ended September 30 (dollars in millions):
	Derivatives in				Amount of												Location of	Amount of						Location of	Amount of
	ASC 815 cash				gain/(loss)												gain/(loss)	gain/(loss)						gain/(loss)	gain/(loss)
	flow hedging				recognized in												reclassified from	reclassified from						recognized in	recognized
	relationships				OCI on												Accumulated OCI	Accumulated OCI						earnings on	in
					derivative												into earnings	into earnings						derivative	earnings on
					(effective												(effective portion)	(effective portion)						(ineffective	a
					portion)																			portion)	derivative
																									(ineffective
																									portion)
					2013								2012					2013			2012				2013		2012
Commodities contracts				$	(0.1	)						$	(0.1	)		Cost of	$	(0.1	)	$	(0.1	)	Cost of	$	-	$	-
																products							products
																sold							sold
Foreign currency contracts					0.8								(0.4	)		Cost of		1.8			(0.8	)	N/A		-		-
																products
																sold
				$	0.7							$	(0.5	)			$	1.7		$	(0.9	)		$	-	$	-
Derivatives not designated as a hedging		Location of loss recognized in				Amount of loss recognized in
instrument under ASC 815		earnings from operations on				earnings from operations  on
		derivative				derivative
							2013				2012
Equity collar contract			Other expense - net			$	-			$	17.9

Income_Taxes

Income Taxes	9 Months Ended
	Sep. 30, 2013
Income Taxes	'
	13	Income Taxes
	The company’s effective tax rate for the three and nine months ended September 30, 2013 was 24.6 percent and 29.2 percent, respectively. The company estimates that its annual effective tax rate for the full year of 2013 will be approximately 29.0 percent. The full year effective tax rate in 2012 was 30.4 percent. Included in the three months ended September 30, 2013 were approximately $3.0 million of higher income tax benefits than previously estimated, primarily related to manufacturing and research and development activities.
	As of September 30, 2013, the company had $1.3 million of unrecognized tax benefits of which $0.9 million would affect its effective tax rate if recognized. The company recognizes potential interest and penalties related to unrecognized tax benefits as a component of tax expense.
	The company’s U.S. federal tax returns for 2009 - 2012 are subject to audit. The company is subject to state and local audits for tax years 2000 - 2012. The company is also subject to non-U.S. income tax examinations for years 2005 - 2012.

Investment_in_RBC_Shares

Investment in RBC Shares	9 Months Ended
	Sep. 30, 2013
Investment in RBC Shares	'
	14	Investment in RBC Shares
	The company received approximately 2.83 million shares of RBC common stock as a part of the proceeds of its sale of EPC to RBC. One half of the company’s RBC shares were classified as available for sale securities and were recorded at fair value with an unrealized after-tax gain of $1.2 million included in other comprehensive loss as of December 31, 2011. The company entered into an equity collar contract for the remaining 50 percent of its RBC shares that were classified as trading securities. Those shares were also recorded at fair value. See Note 12 for further discussion regarding the collar. During the first three months of 2012, the company sold all of its RBC shares for net proceeds of $187.6 million or an average price of $66.19 per share. A pre-tax gain of $27.2 million was recorded in other income in the condensed consolidated statement of earnings. The $27.2 million gain was comprised of a $43.2 million gain on the sale of the RBC shares, the recognition of a $1.9 million gain recognized in other comprehensive earnings at December 31, 2011 as partially offset by the
	write off of $17.9 million, the value of the collar at December 31, 2011. The $187.6 million of proceeds received during the first six months of 2012 were used to pay down debt.

Changes_in_Accumulated_Other_C

Changes in Accumulated Other Comprehensive Loss by Component	9 Months Ended
	Sep. 30, 2013
Changes in Accumulated Other Comprehensive Loss by Component	'
	15	Changes in Accumulated Other Comprehensive Loss by Component
	Changes to accumulated other comprehensive loss by component for the three months ended September 30, 2013 are as follows:
			(dollars in millions)
			Cumulative			Unrealized			Pension			Total
			Foreign			Net Gain			Liability
			Currency			(Loss) on Cash
			Translation			Flow
						Derivatives
	Balance at June 30, 2013		$	13.9		$	0.5		$	(333.1	)	$	(318.7	)
	Other comprehensive earnings (loss) before reclassifications			3.6			(0.4	)		-			3.2
	Amounts reclassified from accumulated other comprehensive loss: (1)			-			(0.1	)		6.3			6.2
	Balance at September 30, 2013		$	17.5		$	-		$	(326.8	)	$	(309.3	)
	(1) Amounts reclassified from accumulated other comprehensive loss:
	Realized gains on derivatives reclassified to cost of products sold			(0.2	)
	Tax provision			0.1
	Reclassification net of tax		$	(0.1	)
	Amortization of pension items:
	Actuarial losses		$	10.6	(2)
	Prior year service cost			(0.3	)(2)
				10.3
	Tax benefit			(4.0	)
	Reclassification net of tax		$	6.3
		-2	These accumulated other comprehensive loss components are included in the computation of net periodic pension cost. See Note 9 - Pensions for additional details.
	Changes to accumulated other comprehensive loss by component for the nine months ended September 30, 2013 are as follows:
			(dollars in millions)
			Cumulative			Unrealized			Pension			Total
			Foreign			Net Gain			Liability
			Currency			(Loss) on Cash
			Translation			Flow
						Derivatives
	Balance at December 31, 2012		$	19.5		$	0.7		$	(340.7	)	$	(320.5	)
	Other comprehensive (loss) earnings before reclassifications			(2.0	)		0.4			(5.0	)		(6.6	)
	Amounts reclassified from accumulated other comprehensive loss: (3)			-			(1.1	)		18.9			17.8
	Balance at September 30, 2013		$	17.5		$	-		$	(326.8	)	$	(309.3	)
	(3) Amounts reclassified from accumulated other comprehensive loss:
	Realized gains on derivatives reclassified to cost of products sold			(1.7	)
	Tax provision			0.6
	Reclassification net of tax		$	(1.1	)
	Amortization of pension items:
	Actuarial losses		$	31.5	(4)
	Prior year service cost			(0.7	)(4)
				30.8
	Tax benefit			(11.9	)
	Reclassification net of tax		$	18.9
		-4	These accumulated other comprehensive loss components are included in the computation of net periodic pension cost. See Note 9 - Pensions for additional details.

Basis_of_Presentation_Policies

Basis of Presentation (Policies)	9 Months Ended
	Sep. 30, 2013
Recent Accounting Pronouncements	'
	Recent Accounting Pronouncements
	In July 2012, the Financial Accounting Standards Board (FASB) issued Accounting Standards Update (ASU) 2012-02, “Testing Indefinite-Lived Intangible Assets for Impairment.” ASU 2012-02 allows an entity to first assess qualitative factors in determining whether events and circumstances indicate that it is more-likely-than not that an indefinite-lived intangible asset is impaired. If an entity determines that it is not more-likely-than not that the indefinite-lived intangible asset is impaired, then the entity is not required to perform a quantitative impairment test. ASU 2012-02 is effective for the year ending December 31, 2013. The adoption of this ASU will not have an impact on the company’s consolidated financial condition, results of operations or cash flows.
	In February 2013, the FASB issued ASU No. 2013-02, “Comprehensive Income (Topic 220): Reporting of Amounts Reclassified out of Accumulated Other Comprehensive Income.” ASU No. 2013-02 sets requirements for presentation for significant items reclassified out of accumulated other comprehensive income to net income in reporting periods presented. ASU 2013-02 was effective prospectively beginning with the quarter ended March 31, 2013. The adoption of this guidance did not have an impact on the company’s financial
	condition or results of operations but required additional disclosure in the notes to the company’s financial statements. The company complied with the disclosure requirements of ASU 2013-02 for the three and nine months ended September 30, 2013.

Restructuring_Impairment_and_S1

Restructuring, Impairment and Settlement Expense - Net (Tables)	9 Months Ended
	Sep. 30, 2013
Schedule of Analysis of Company's Restructuring, Impairment and Settlement Reserve	'
	The following table presents an analysis of the company’s restructuring, impairment and settlement reserves as of and for the nine months ended September 30, 2013:
		(dollars in millions)
		Inventory		Severance			Asset			Equipment		Settlement			Total
		Obsolescence		Costs			Impairment			Relocation		Income
										Costs
	Balance at December 31, 2012	$	-	$	-		$	-		$	-	$	-		$	-
	Expense (income) recognized		-		5.2			7.5			-		(11.0	)		1.7
	Asset write-down		-		-			(7.5	)		-		-			(7.5	)
	Settlement income		-		-			-			-		11			11
	Balance at March 31, 2013	$	-	$	5.2		$	-		$	-	$	-		$	5.2
	Expense recognized		1.6		2.6			-			-		-			4.2
	Severance payments		-		(0.9	)		-			-		-			(0.9	)
	Balance at June 30, 2013	$	1.6	$	6.9		$	-			-	$	-		$	8.5
	Expense (income) recognized		0.3		(0.3	)		-			1.3		-			1.3
	Severance payments		-		(4.2	)		-			-		-			(4.2	)
	Balance at September 30, 2013	$	1.9	$	2.4		$	-		$	1.3	$	-		$	5.6

Inventories_Tables

Inventories (Tables)	9 Months Ended
	Sep. 30, 2013
Schedule of Inventories	'
	The following table presents the components of the company’s inventory balances:
		(dollars in millions)
		September 30,			December 31,
		2013			2012
	Finished products	$	97.2		$	74.4
	Work in process		12			12
	Raw materials		103.3			100
			212.5			186.4
	LIFO reserve		(23.0	)		(23.0	)
		$	189.5		$	163.4

Product_Warranties_Tables

Product Warranties (Tables)	9 Months Ended
	Sep. 30, 2013
Schedule of Product Warranty Liability Activity	'
	The following table presents the company’s warranty liability activity for each of the three first three month periods in 2013 and 2012 (dollars in millions):
		(dollars in millions)
		2013			2012
	Balance at January 1,		$129.60			$131.90
	Expense		15			15.4
	Claims settled		(15.7	)		(15.3	)
	Balance at March 31,		$128.90			$132.00
	Expense		16.7			14.9
	Claims settled		(15.8	)		(14.9	)
	Balance at June 30,		129.8			132
	Expense		15.5			12.4
	Claims settled		(13.6	)		(11.8	)
	Balance at September 30,		$131.70			$132.60

Earnings_Per_Share_of_Common_S1

Earnings Per Share of Common Stock (Tables)	9 Months Ended
	Sep. 30, 2013
Schedule of Computation of Basic And Diluted Weighted-Average Shares Used in Earnings per Share Calculations	'
	The following table sets forth the computation of basic and diluted weighted-average shares used in the earnings per share calculations:
		Three Months Ended				Nine Months Ended
		September 30,				September 30,
		2013		2012		2013		2012
	Denominator for basic earnings per share - weighted average shares		92,050,932		92,387,904		92,417,352		92,381,930
	Effect of dilutive stock options and share units		677,129		750,280		629,201		705,766
	Denominator for diluted earnings per share		92,728,061		93,138,184		93,046,553		93,087,696

Stock_Based_Compensation_Table

Stock Based Compensation (Tables)	9 Months Ended
	Sep. 30, 2013
Schedule of Changes in Option Shares	'
	Changes in option awards, all of which relate to Common Stock, were as follows for the nine months ended September 30, 2013:
		Weighted-Average			Nine Months					Average		Aggregate
		Per Share			Ended					Remaining		Intrinsic Value
		Exercise Price			September 30, 2013					Contractual		(dollars in
										Life		millions)
	Outstanding at January 1, 2013	$	16.72					1,530,734
	Granted		35.03					357,100
	Exercised		13.13					(363,862	)
	Forfeited		30.66					(3,732	)
	Outstanding at September 30, 2013		21.84					1,520,240			8 years	$	35.5
	Exercisable at September 30, 2013	$	15.83					820,614			7 years	$	24.1
Schedule of Weighted Average Fair Value per Option at Date of Grant	'
	The weighted-average fair value per option at the date of grant during the nine months ended September 30, 2013 and 2012 using the Black-Scholes option-pricing model was $12.48 and $8.26, respectively. Assumptions were as follows:
		Nine Months Ended September 30,
		2013					2012
	Expected life (years)		6.1					6.2
	Risk-free interest rate		2	%				2	%
	Dividend yield		1.1	%				1.4	%
	Expected volatility		38.4	%				39.4	%
Schedule of Share Unit Activity Under Plan	'
	A summary of share unit activity under the plan is as follows:
		Number of Units			Weighted-Average
					Grant Date Value
	Issued and unvested at January 1, 2013		469,012		$	19.37
	Granted		142,900			34.63
	Vested		(157,732	)		13.97
	Forfeited		(9,350	)		27.38
	Issued and unvested at September 30, 2013		444,830		$	26.02

Pensions_Tables

Pensions (Tables)	9 Months Ended
	Sep. 30, 2013
Schedule of Components of Net Pension Expense	'
	The following table presents the components of the company’s net pension expense:
		(dollars in millions)
		Three Months Ended						Nine Months Ended
		September 30,						September  30,
		2013			2012			2013			2012
	Service cost	$	2.3		$	1.9		$	6.8		$	5.8
	Interest cost		9.9			10.9			29.6			32.6
	Expected return on plan assets		(15.5	)		(17.2	)		(46.3	)		(51.6	)
	Amortization of unrecognized loss		10.6			8.1			31.5			24.1
	Amortization of prior service cost		(0.3	)		(0.2	)		(0.7	)		(0.6	)
	Defined benefit plan expense	$	7		$	3.5		$	20.9		$	10.3

Operations_by_Segment_Tables

Operations by Segment (Tables)	9 Months Ended
	Sep. 30, 2013
Schedule of Operating Earnings	'
	The company’s operations by segment are as follows:
		(dollars in millions)
		Three Months Ended						Nine Months Ended
		September 30,						September  30,
		2013			2012			2013			2012
	Net sales
	North America	$	370.1		$	335.7		$	1,137.80		$	1,054.90
	Rest of World		175.2			133.8			483			385.3
	Inter-segment sales		(9.1	)		(7.3	)		(25.9	)		(25.2	)
		$	536.2		$	462.2		$	1,594.90		$	1,415.00
	Operating earnings
	North America (1) (3) (4) (5)	$	51.5		$	50.7		$	160.6		$	144.1
	Rest of World		26.9			12.7			67.6			39.2
	Inter-segment earnings elimination		(0.1	)		-			(0.1	)		-
			78.3			63.4			228.1			183.3
	Corporate expense (2) (6)		(15.6	)		(9.5	)		(43.9	)		(3.7	)
	Interest expense		(1.4	)		(1.9	)		(4.5	)		(7.1	)
	Earnings before income taxes		61.3			52			179.7			172.5
	Provision for income taxes		15.1			15			52.4			53.1
	Net earnings	$	46.2		$	37		$	127.3		$	119.4
	(1) Includes non-operating pension costs of:	$	(3.9	)	$	(1.2	)	$	(11.1	)	$	(3.3	)
	(2) Includes non-operating pension costs of:		(1.3	)		(0.6	)		(3.7	)		(1.8	)
	(3) Includes settlement income of:		-			-			11			-
	(4) Includes restructuring and impairment expenses of:		(1.3	)		-			(18.2	)		-
	(5) Includes contingent consideration adjustment of:		-			6.4			-			6.4
	(6) Includes net gain on shares of Regal Beloit Corporation stock of:		-			-			-			27.2

Fair_Value_Measurements_Tables

Fair Value Measurements (Tables)	9 Months Ended
	Sep. 30, 2013
Schedule of Assets and Liabilities Measured at Fair Value on Recurring Basis	'
	Assets and liabilities measured at fair value on a recurring basis are as follows:
		(dollars in millions)
	Fair Value Measurement Using	September 30, 2013		December 31, 2012
	Quoted prices in active markets for identical assets (Level 1)	$	102.8	$	197.2

Derivative_Instruments_Tables

Derivative Instruments (Tables)	9 Months Ended
	Sep. 30, 2013
Effect of Derivatives Designated as Hedging Instruments on Statement of Earnings	'
	The effect of derivatives designated as hedging instruments under ASC 815 on the Statement of Earnings:
	Three Months Ended September 30 (dollars in millions):
	Derivatives in			Amount of												Location of	Amount of						Location of	Amount of
	ASC 815 cash			gain/(loss)												gain/(loss)	gain/(loss)						gain/(loss)	gain/(loss)
	flow hedging			recognized in												reclassified from	reclassified from						recognized in	recognized
	relationships			OCI on												Accumulated OCI	Accumulated OCI						earnings on	in
				derivative												into earnings	into earnings						derivative	earnings on
				(effective												(effective portion)	(effective portion)						(ineffective	a
				portion)																			portion)	derivative
																								(ineffective
																								portion)
				2013								2012					2013			2012				2013		2012
	Commodities contracts			$	-							$	(0.1	)		Cost of	$	(0.1	)	$	-		Cost of	$	-	$	-
																products							products
																sold							sold
	Foreign currency contracts				(0.8	)							(0.3	)		Cost of		0.3			(0.2	)	N/A		-		-
																products
																sold
				$	(0.8	)						$	(0.4	)			$	0.2		$	(0.2	)		$	-	$	-
	Nine Months Ended September 30 (dollars in millions):
	Derivatives in			Amount of												Location of	Amount of						Location of	Amount of
	ASC 815 cash			gain/(loss)												gain/(loss)	gain/(loss)						gain/(loss)	gain/(loss)
	flow hedging			recognized in												reclassified from	reclassified from						recognized in	recognized
	relationships			OCI on												Accumulated OCI	Accumulated OCI						earnings on	in
				derivative												into earnings	into earnings						derivative	earnings on
				(effective												(effective portion)	(effective portion)						(ineffective	a
				portion)																			portion)	derivative
																								(ineffective
																								portion)
				2013								2012					2013			2012				2013		2012
	Commodities contracts			$	(0.1	)						$	(0.1	)		Cost of	$	(0.1	)	$	(0.1	)	Cost of	$	-	$	-
																products							products
																sold							sold
	Foreign currency contracts				0.8								(0.4	)		Cost of		1.8			(0.8	)	N/A		-		-
																products
																sold
				$	0.7							$	(0.5	)			$	1.7		$	(0.9	)		$	-	$	-
	Derivatives not designated as a hedging	Location of loss recognized in				Amount of loss recognized in
	instrument under ASC 815	earnings from operations on				earnings from operations  on
		derivative				derivative
							2013				2012
	Equity collar contract		Other expense - net			$	-			$	17.9
Designated as Hedging Instrument	'
Schedule of Summary by Currency of Foreign Currency Forward Contracts	'
	The following table summarizes, by currency, the contractual amounts of the company’s foreign currency forward contracts:
		(dollars in millions)
		September 30,
		2013								2012
		Buy				Sell				Buy				Sell
	British pound	$	-			$	1.9			$	-			$	2.2
	Canadian dollar		-				67.1				-				39.2
	Chinese renminbi		-				-				4.6				-
	Euro		14.8				2.2				29.9				2.3
	Indian rupee		1.5				-				-				-
	Mexican peso		15.3				-				11.6				-
	Total	$	31.6			$	71.2			$	46.1			$	43.7
Impact of Derivative Contracts on Company's Financial Statements	'
	Fair value of derivatives designated as hedging instruments under ASC 815:
				(dollars in millions)
		Balance Sheet Location		September 30,				December 31,
				2013				2012
	Foreign currency contracts	Accrued liabilities		$	(0.3	)		$	(0.5	)
		Other current assets			0.4				1.7
	Total derivatives designated as hedging instruments			$	0.1			$	1.2

Changes_in_Accumulated_Other_C1

Changes in Accumulated Other Comprehensive Loss by Component (Tables)	9 Months Ended
	Sep. 30, 2013
Changes to Accumulated Other Comprehensive Loss by Component	'
	Changes to accumulated other comprehensive loss by component for the three months ended September 30, 2013 are as follows:
			(dollars in millions)
			Cumulative			Unrealized			Pension			Total
			Foreign			Net Gain			Liability
			Currency			(Loss) on Cash
			Translation			Flow
						Derivatives
	Balance at June 30, 2013		$	13.9		$	0.5		$	(333.1	)	$	(318.7	)
	Other comprehensive earnings (loss) before reclassifications			3.6			(0.4	)		-			3.2
	Amounts reclassified from accumulated other comprehensive loss: (1)			-			(0.1	)		6.3			6.2
	Balance at September 30, 2013		$	17.5		$	-		$	(326.8	)	$	(309.3	)
	(1) Amounts reclassified from accumulated other comprehensive loss:
	Realized gains on derivatives reclassified to cost of products sold			(0.2	)
	Tax provision			0.1
	Reclassification net of tax		$	(0.1	)
	Amortization of pension items:
	Actuarial losses		$	10.6	(2)
	Prior year service cost			(0.3	)(2)
				10.3
	Tax benefit			(4.0	)
	Reclassification net of tax		$	6.3
		-2	These accumulated other comprehensive loss components are included in the computation of net periodic pension cost. See Note 9 - Pensions for additional details.
	Changes to accumulated other comprehensive loss by component for the nine months ended September 30, 2013 are as follows:
			(dollars in millions)
			Cumulative			Unrealized			Pension			Total
			Foreign			Net Gain			Liability
			Currency			(Loss) on Cash
			Translation			Flow
						Derivatives
	Balance at December 31, 2012		$	19.5		$	0.7		$	(340.7	)	$	(320.5	)
	Other comprehensive (loss) earnings before reclassifications			(2.0	)		0.4			(5.0	)		(6.6	)
	Amounts reclassified from accumulated other comprehensive loss: (3)			-			(1.1	)		18.9			17.8
	Balance at September 30, 2013		$	17.5		$	-		$	(326.8	)	$	(309.3	)
	(3) Amounts reclassified from accumulated other comprehensive loss:
	Realized gains on derivatives reclassified to cost of products sold			(1.7	)
	Tax provision			0.6
	Reclassification net of tax		$	(1.1	)
	Amortization of pension items:
	Actuarial losses		$	31.5	(4)
	Prior year service cost			(0.7	)(4)
				30.8
	Tax benefit			(11.9	)
	Reclassification net of tax		$	18.9
		-4	These accumulated other comprehensive loss components are included in the computation of net periodic pension cost. See Note 9 - Pensions for additional details.

Basis_of_Presentation_Addition

Basis of Presentation - Additional Information (Detail)	1 Months Ended	6 Months Ended
	Apr. 15, 2013	Jun. 30, 2013
Organization And Summary Of Significant Accounting Policies [Line Items]	'	'
Stock split ratio	2	'
Percentage of stock dividend to stock holders	'	100.00%
Dividend payable date	'	15-May-13
Dividend date of record	'	30-Apr-13

Acquisition_Additional_Informa

Acquisition - Additional Information (Detail) (USD $)	9 Months Ended	1 Months Ended
In Millions, unless otherwise specified	Sep. 30, 2013	Apr. 14, 2013	Apr. 14, 2013	Feb. 14, 2013	Apr. 14, 2013
		Customer Lists	MiM Isitma Sogutma Havalandirma ve Aritma Sistemleri San Tic A S	MiM Isitma Sogutma Havalandirma ve Aritma Sistemleri San Tic A S	MiM Isitma Sogutma Havalandirma ve Aritma Sistemleri San Tic A S
					Customer Lists
Business Acquisition [Line Items]	'	'	'	'	'
Percentage of shares acquired	'	'	'	100.00%	'
Cash received from acquisition	'	'	$1.90	'	'
Aggregate cash purchase price, net of cash received	4	'	4	'	'
Recorded contingent consideration	'	'	1.1	'	'
Debt assumed	'	'	1.7	'	'
Acquired intangible assets	'	'	4.1	'	'
Acquired intangible assets subject to amortization	'	'	'	'	$2.30
Acquired intangible assets, amortization period, in years	'	'10 years	'	'	'

Restructuring_Impairment_and_S2

Restructuring, Impairment and Settlement Expense-Net - Additional Information (Detail) (USD $)	1 Months Ended	3 Months Ended		9 Months Ended
In Millions, unless otherwise specified	Mar. 11, 2013	Sep. 30, 2013	Sep. 30, 2012	Sep. 30, 2013	Sep. 30, 2012
Restructuring Cost and Reserve [Line Items]	'	'	'	'	'
Restructuring and impairment expense	'	$1.30	'	$18.20	'
Equipment relocation costs	'	1.3	'	1.3	'
Severance costs and impairment expense	'	'	'	7.5	'
Reduction of Severance costs	'	0.3	'	'	'
Inventory obsolescence reserve	'	0.3	'	1.9	'
Impairment charges related to long-lived asset	'	'	'	7.5	'
Income tax benefit related to expenses	'	0.3	'	4.6	'
Recovery of costs and damages from vendors	11	'	'	'	'
Gain recognized on legal settlement	11	'	'	'	'
Related income tax expense	$4.30	$15.10	$15	$52.40	$53.10

Schedule_of_Analysis_of_Compan

Schedule of Analysis of Company's Restructuring, Impairment and Settlement Reserve (Detail) (USD $)	3 Months Ended			9 Months Ended
In Millions, unless otherwise specified	Sep. 30, 2013	Jun. 30, 2013	Mar. 31, 2013	Sep. 30, 2013
Restructuring Cost and Reserve [Line Items]	'	'	'	'
Beginning Balance	$8.50	$5.20	'	'
Expense (income) recognized	1.3	4.2	1.7	'
Asset write-down	'	'	-7.5	'
Severance payments	-4.2	-0.9	'	'
Settlement income	'	'	11	11
Ending Balance	5.6	8.5	5.2	5.6
Inventory Obsolescence	'	'	'	'
Restructuring Cost and Reserve [Line Items]	'	'	'	'
Beginning Balance	1.6	'	'	'
Expense (income) recognized	0.3	1.6	'	'
Ending Balance	1.9	1.6	'	1.9
Severance Costs	'	'	'	'
Restructuring Cost and Reserve [Line Items]	'	'	'	'
Beginning Balance	6.9	5.2	'	'
Expense (income) recognized	-0.3	2.6	5.2	'
Severance payments	-4.2	-0.9	'	'
Ending Balance	2.4	6.9	5.2	2.4
Asset Impairment	'	'	'	'
Restructuring Cost and Reserve [Line Items]	'	'	'	'
Expense (income) recognized	'	'	7.5	'
Asset write-down	'	'	-7.5	'
Equipment Relocation Costs	'	'	'	'
Restructuring Cost and Reserve [Line Items]	'	'	'	'
Expense (income) recognized	1.3	'	'	'
Ending Balance	1.3	'	'	1.3
Settlement Income	'	'	'	'
Restructuring Cost and Reserve [Line Items]	'	'	'	'
Expense (income) recognized	'	'	-11	'
Settlement income	'	'	$11	'

Schedule_of_Inventories_Detail

Schedule of Inventories (Detail) (USD $)	Sep. 30, 2013	Dec. 31, 2012
In Millions, unless otherwise specified
Inventories [Abstract]	'	'
Finished products	$97.20	$74.40
Work in process	12	12
Raw materials	103.3	100
Inventories, at FIFO cost	212.5	186.4
LIFO reserve	-23	-23
Inventories, Net	$189.50	$163.40

LongTerm_Debt_Additional_Infor

Long-Term Debt - Additional Information (Detail) (USD $)	9 Months Ended
In Millions, unless otherwise specified	Sep. 30, 2013
Line of Credit Facility [Line Items]	'
Multi-currency revolving credit agreement	$400
Number of banks involved in multi-year multi-currency revolving credit agreement	8
Revolving credit facility, expiration date	12-Dec-17
Multi-currency revolving credit agreement, maximum amount	$500

Companys_Warranty_Liability_Ac

Company's Warranty Liability Activity (Detail) (USD $)	3 Months Ended
In Millions, unless otherwise specified	Sep. 30, 2013	Jun. 30, 2013	Mar. 31, 2013	Sep. 30, 2012	Jun. 30, 2012	Mar. 31, 2012
Product Warranties [Abstract]	'	'	'	'	'	'
Beginning Balance	$129.80	$128.90	$129.60	$132	$132	$131.90
Expense	15.5	16.7	15	12.4	14.9	15.4
Claims settled	-13.6	-15.8	-15.7	-11.8	-14.9	-15.3
Ending Balance	$131.70	$129.80	$128.90	$132.60	$132	$132

Schedule_of_Computation_of_Bas

Schedule of Computation of Basic and Diluted Weighted-Average Shares Used in Earnings per Share Calculations (Detail)	3 Months Ended		9 Months Ended
	Sep. 30, 2013	Sep. 30, 2012	Sep. 30, 2013	Sep. 30, 2012
Earnings Per Share Of Common Stock [Abstract]	'	'	'	'
Denominator for basic earnings per share - weighted average shares	92,050,932	92,387,904	92,417,352	92,381,930
Effect of dilutive stock options and share units	677,129	750,280	629,201	705,766
Denominator for diluted earnings per share	92,728,061	93,138,184	93,046,553	93,087,696

Stock_Based_Compensation_Addit

Stock Based Compensation - Additional Information (Detail) (USD $)	3 Months Ended		9 Months Ended
In Millions, except Share data, unless otherwise specified	Sep. 30, 2013	Sep. 30, 2012	Sep. 30, 2013	Sep. 30, 2012
Stock Based Compensation [Line Items]	'	'	'	'
Total stock based compensation cost recognized	$2.40	$1.50	$8.80	$5.30
Stock option compensation recognized	1.1	0.7	4.1	2.5
Weighted-average fair value per option at the date of grant	'	'	$12.48	$8.26
Stock Option	'	'	'	'
Stock Based Compensation [Line Items]	'	'	'	'
Award vesting period	'	'	'3 years	'3 years
Award expiration period	'	'	'10 years	'10 years
Restricted Stock And Share Units	'	'	'	'
Stock Based Compensation [Line Items]	'	'	'	'
Award vesting period	'	'	'3 years	'3 years
Share units granted under the plan	'	'	142,900	167,800
Value of share units at the date of issuance	'	'	4.9	3.9
Share based compensation expense attributable to share units	$1.20	$0.80	$4.70	$2.80
A.O. Smith Combined Compensation Plan	'	'	'	'
Stock Based Compensation [Line Items]	'	'	'	'
Number of shares available for granting of options, restricted stock or share units	2,759,070	'	2,759,070	'

Changes_in_Option_Awards_All_o

Changes in Option Awards All of Which Related to Common Stock (Detail) (USD $)	9 Months Ended
In Millions, except Share data, unless otherwise specified	Sep. 30, 2013
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]	'
Weighted-Average Per Share Exercise Price, beginning period	$16.72
Weighted- Average Per Share Exercise Price - Granted	$35.03
Weighted- Average Per Share Exercise Price - Exercised	$13.13
Weighted- Average Per Share Exercise Price - Forfeited	$30.66
Weighted-Average Per Share Exercise Price, ending period	$21.84
Weighted- Average Per Share Exercise Price, Exercisable	$15.83
Outstanding, Beginning Balance	1,530,734
Granted	357,100
Exercised	-363,862
Forfeited	-3,732
Outstanding, Ending Balance	1,520,240
Exercisable at End of Period	820,614
Average Remaining Contractual Life, Outstanding at End of Period, Years	'8 years
Average Remaining Contractual Life, Exercisable at End of Period, Years	'7 years
Aggregate Intrinsic Value, Outstanding at End of Period	$35.50
Aggregate Intrinsic Value, Exercisable at End of Period	$24.10

Schedule_of_WeightedAverage_Fa

Schedule of Weighted-Average Fair Value per Option at Date of Grant (Detail)	9 Months Ended
	Sep. 30, 2013	Sep. 30, 2012
Stock Based Compensation [Abstract]	'	'
Expected life (years)	'6 years 1 month 6 days	'6 years 2 months 12 days
Risk-free interest rate	2.00%	2.00%
Dividend yield	1.10%	1.40%
Expected volatility	38.40%	39.40%

Summary_of_Share_Unit_Activity

Summary of Share Unit Activity Under Plan (Detail) (Restricted Stock And Share Units, USD $)	9 Months Ended
	Sep. 30, 2013	Sep. 30, 2012
Restricted Stock And Share Units	'	'
Stock Based Compensation [Line Items]	'	'
Number of Units Issued and unvested, Beginning of Period	469,012	'
Number of Units - Granted	142,900	167,800
Number of Units - Vested	-157,732	'
Number of Units - Forfeited/cancelled	-9,350	'
Number of Units Issued and unvested, End of Period	444,830	'
Weighted-Average Grant Date Value, Beginning of Period	$19.37	'
Weighted-Average Grant Date Value - Granted	$34.63	'
Weighted-Average Grant Date Value - Vested	$13.97	'
Weighted-Average Grant Date Value - Forfeited/cancelled	$27.38	'
Weighted-Average Grant Date Value, End of Period	$26.02	'

Components_of_Companys_Net_Pen

Components of Company's Net Pension Expense (Detail) (USD $)	3 Months Ended		9 Months Ended
In Millions, unless otherwise specified	Sep. 30, 2013	Sep. 30, 2012	Sep. 30, 2013	Sep. 30, 2012
Pensions [Abstract]	'	'	'	'
Service cost	$2.30	$1.90	$6.80	$5.80
Interest cost	9.9	10.9	29.6	32.6
Expected return on plan assets	-15.5	-17.2	-46.3	-51.6
Amortization of unrecognized loss	10.6	8.1	31.5	24.1
Amortization of prior service cost	-0.3	-0.2	-0.7	-0.6
Defined benefit plan expense	$7	$3.50	$20.90	$10.30

Operations_by_Segment_Addition

Operations by Segment - Additional Information (Detail)	9 Months Ended
	Sep. 30, 2013
	Segment
Segment Reporting Information [Line Items]	'
Number of reporting segments	2

Schedule_of_Operating_Earnings

Schedule of Operating Earnings (Detail) (USD $)	1 Months Ended	3 Months Ended				9 Months Ended
In Millions, unless otherwise specified	Mar. 11, 2013	Sep. 30, 2013		Sep. 30, 2012		Sep. 30, 2013		Sep. 30, 2012
Segment Reporting Information [Line Items]	'	'		'		'		'
Net sales	'	$536.20		$462.20		$1,594.90		$1,415
Operating earnings	'	78.3		63.4		228.1		183.3
Corporate expense	'	-15.6	[1],[2]	-9.5	[1],[2]	-43.9	[1],[2]	-3.7	[1],[2]
Interest expense	'	-1.4		-1.9		-4.5		-7.1
Earnings before income taxes	'	61.3		52		179.7		172.5
Provision for income taxes	4.3	15.1		15		52.4		53.1
Net earnings	'	46.2		37		127.3		119.4
North America	'	'		'		'		'
Segment Reporting Information [Line Items]	'	'		'		'		'
Net sales	'	370.1		335.7		1,137.80		1,054.90
Operating earnings	'	51.5	[3],[4],[5],[6]	50.7	[3],[4],[5],[6]	160.6	[3],[4],[5],[6]	144.1	[3],[4],[5],[6]
Rest of World	'	'		'		'		'
Segment Reporting Information [Line Items]	'	'		'		'		'
Net sales	'	175.2		133.8		483		385.3
Operating earnings	'	26.9		12.7		67.6		39.2
Inter-Segment Sales	'	'		'		'		'
Segment Reporting Information [Line Items]	'	'		'		'		'
Net sales	'	-9.1		-7.3		-25.9		-25.2
Inter-segment earnings elimination	'	'		'		'		'
Segment Reporting Information [Line Items]	'	'		'		'		'
Operating earnings	'	($0.10)		'		($0.10)		'
[1]	Includes non-operating pension costs of: (1.3 ) (0.6 ) (3.7 ) (1.8 )
[2]	Includes net gain on shares of Regal Beloit Corporation stock of: - - - 27.2
[3]	Includes non-operating pension costs of: $ (3.9 ) $ (1.2 ) $ (11.1 ) $ (3.3 )
[4]	Includes settlement income of: - - 11.0 -
[5]	Includes restructuring and impairment expenses of: (1.3 ) - (18.2 ) -
[6]	Includes contingent consideration adjustment of: - 6.4 - 6.4

Schedule_of_Operating_Earnings1

Schedule of Operating Earnings (Parenthetical) (Detail) (USD $)	3 Months Ended			9 Months Ended
In Millions, unless otherwise specified	Sep. 30, 2013	Mar. 31, 2013	Sep. 30, 2012	Sep. 30, 2013	Sep. 30, 2012
Segment Reporting Information [Line Items]	'	'	'	'	'
Settlement income	'	$11	'	$11	'
Restructuring and impairment expenses	1.3	'	'	7.2	'
Contingent consideration adjustment	'	'	6.4	'	6.4
Gain on shares of stock	'	'	'	'	27.2
Corporate Expense	'	'	'	'	'
Segment Reporting Information [Line Items]	'	'	'	'	'
Non-operating pension costs	-1.3	'	-0.6	-3.7	-1.8
Operating Income	'	'	'	'	'
Segment Reporting Information [Line Items]	'	'	'	'	'
Non-operating pension costs	-3.9	'	-1.2	-11.1	-3.3
Segment Reporting	'	'	'	'	'
Segment Reporting Information [Line Items]	'	'	'	'	'
Restructuring and impairment expenses	($1.30)	'	'	($18.20)	'

Schedule_of_Assets_and_Liabili

Schedule of Assets and Liabilities Measured at Fair Value on Recurring Basis (Detail) (Quoted Prices In Active Markets For Identical Assets (Level 1), USD $)	Sep. 30, 2013	Dec. 31, 2012
In Millions, unless otherwise specified
Quoted Prices In Active Markets For Identical Assets (Level 1)	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'
Assets measured at fair value	$102.80	$197.20

Derivative_Instruments_Additio

Derivative Instruments - Additional Information (Detail)	1 Months Ended	9 Months Ended
In Millions, unless otherwise specified	Aug. 22, 2011	Sep. 30, 2013
		lb
Trading Activity, Gains and Losses, Net [Line Items]	'	'
Proceeds from sale of segment, shares	2.83	'
Equity collar contract, percentage of shares hedged	50.00%	50.00%
Commodity hedges outstanding, total weight of copper, in pounds	'	200,000
Put Option	'	'
Trading Activity, Gains and Losses, Net [Line Items]	'	'
Price of the equity collar, per share	'	63.29
Call Option	'	'
Trading Activity, Gains and Losses, Net [Line Items]	'	'
Price of the equity collar, per share	'	77.32

Schedule_of_Summary_by_Currenc

Schedule of Summary by Currency of Foreign Currency Forward Contracts (Detail) (Foreign currency forward contracts, USD $)	Sep. 30, 2013	Sep. 30, 2012
In Millions, unless otherwise specified
Buy	'	'
Contractual Amounts Of Foreign Currency Forward Contracts [Line Items]	'	'
Buy	$31.60	$46.10
Sell	'	'
Contractual Amounts Of Foreign Currency Forward Contracts [Line Items]	'	'
Buy	71.2	43.7
British Pound | Sell	'	'
Contractual Amounts Of Foreign Currency Forward Contracts [Line Items]	'	'
Buy	1.9	2.2
Canadian Dollar | Sell	'	'
Contractual Amounts Of Foreign Currency Forward Contracts [Line Items]	'	'
Buy	67.1	39.2
Chinese Renminibi | Buy	'	'
Contractual Amounts Of Foreign Currency Forward Contracts [Line Items]	'	'
Buy	'	4.6
Euro | Buy	'	'
Contractual Amounts Of Foreign Currency Forward Contracts [Line Items]	'	'
Buy	14.8	29.9
Euro | Sell	'	'
Contractual Amounts Of Foreign Currency Forward Contracts [Line Items]	'	'
Buy	2.2	2.3
Indian Rupee | Buy	'	'
Contractual Amounts Of Foreign Currency Forward Contracts [Line Items]	'	'
Buy	1.5	'
Mexico, Pesos | Buy	'	'
Contractual Amounts Of Foreign Currency Forward Contracts [Line Items]	'	'
Buy	$15.30	$11.60

Impact_of_Derivative_Contracts

Impact of Derivative Contracts on Company's Financial Statements (Detail) (Designated as Hedging Instrument, USD $)	Sep. 30, 2013	Dec. 31, 2012
In Millions, unless otherwise specified
Derivatives, Fair Value [Line Items]	'	'
Fair value of derivative instruments, total	$0.10	$1.20
Foreign Currency Contracts | Accrued Liabilities	'	'
Derivatives, Fair Value [Line Items]	'	'
Fair value of derivative instruments, liabilities	-0.3	-0.5
Foreign Currency Contracts | Other Current Assets	'	'
Derivatives, Fair Value [Line Items]	'	'
Fair value of derivative instruments, assets	$0.40	$1.70

Effect_of_Derivatives_Designat

Effect of Derivatives Designated as Hedging Instruments on Statement of Earnings (Detail) (USD $)	3 Months Ended		9 Months Ended
In Millions, unless otherwise specified	Sep. 30, 2013	Sep. 30, 2012	Sep. 30, 2013	Sep. 30, 2012
Derivative [Line Items]	'	'	'	'
Amount of gain/(loss) recognized in OCI on derivative (effective portion)	($0.80)	($0.40)	$0.70	($0.50)
Amount of gain/(loss) reclassified from Accumulated OCI into earnings (effective portion)	0.2	-0.2	1.7	-0.9
Amount of gain/(loss) recognized in earnings on a derivative (ineffective portion)	'	'	'	'
Commodities Contracts	'	'	'	'
Derivative [Line Items]	'	'	'	'
Amount of gain/(loss) recognized in OCI on derivative (effective portion)	'	-0.1	-0.1	-0.1
Commodities Contracts | Cost Of Products Sold	'	'	'	'
Derivative [Line Items]	'	'	'	'
Amount of gain/(loss) reclassified from Accumulated OCI into earnings (effective portion)	-0.1	'	-0.1	-0.1
Amount of gain/(loss) recognized in earnings on a derivative (ineffective portion)	'	'	'	'
Foreign Currency Contracts	'	'	'	'
Derivative [Line Items]	'	'	'	'
Amount of gain/(loss) recognized in OCI on derivative (effective portion)	-0.8	-0.3	0.8	-0.4
Amount of gain/(loss) recognized in earnings on a derivative (ineffective portion)	'	'	'	'
Foreign Currency Contracts | Cost Of Products Sold	'	'	'	'
Derivative [Line Items]	'	'	'	'
Amount of gain/(loss) reclassified from Accumulated OCI into earnings (effective portion)	0.3	-0.2	1.8	-0.8
Not Designated as Hedging Instrument | Equity Collar Contract | Other expense - net	'	'	'	'
Derivative [Line Items]	'	'	'	'
Amount of loss recognized in earnings from continuing operations on derivative	'	'	'	$17.90

Income_Taxes_Additional_Inform

Income Taxes - Additional Information (Detail) (USD $)	3 Months Ended	9 Months Ended	12 Months Ended		9 Months Ended
In Millions, unless otherwise specified	Sep. 30, 2013	Sep. 30, 2013	Dec. 31, 2012	Dec. 31, 2013	Sep. 30, 2013	Sep. 30, 2013	Sep. 30, 2013	Sep. 30, 2013	Sep. 30, 2013	Sep. 30, 2013
				Scenario, Forecast	U.S. federal	U.S. federal	State and local	State and local	Non-U.S.	Non-U.S.
					Minimum	Maximum	Minimum	Maximum	Minimum	Maximum
Income Tax Contingency [Line Items]	'	'	'	'	'	'	'	'	'	'
Effective tax rate	24.60%	29.20%	30.40%	29.00%	'	'	'	'	'	'
Income tax benefits related to manufacturing and research and development activities	$3	'	'	'	'	'	'	'	'	'
Unrecognized tax benefits	1.3	1.3	'	'	'	'	'	'	'	'
Unrecognized tax benefits that would affect the effective tax rate if recognized	$0.90	$0.90	'	'	'	'	'	'	'	'
Income tax examinations, years under examination	'	'	'	'	'2009	'2012	'2000	'2012	'2005	'2012

Investment_in_RBC_Shares_Addit

Investment in RBC Shares - Additional Information (Detail) (USD $)	1 Months Ended	3 Months Ended	9 Months Ended	12 Months Ended
In Millions, except Per Share data, unless otherwise specified	Aug. 22, 2011	Mar. 31, 2012	Sep. 30, 2012	Dec. 31, 2011	Sep. 30, 2013
Schedule of Investments [Line Items]	'	'	'	'	'
Proceeds from sale of business segment, shares	2.83	'	'	'	'
Unrealized after-tax gain on available for sale securities	'	'	($1.20)	$1.20	'
Equity collar contract, percentage of shares hedged	50.00%	'	'	'	50.00%
Net proceeds from sale of business segment	'	187.6	187.6	'	'
RBC share price per share	'	$66.19	'	'	'
Net pre tax gain	'	27.2	27.2	'	'
Proceeds from sale of shares	'	43.2	'	'	'
Gain recognized	'	1.9	'	'	'
Collar value, write off	'	'	'	$17.90	'

Changes_in_Accumulated_Other_C2

Changes in Accumulated Other Comprehensive Loss by Component (Detail) (USD $)	3 Months Ended		9 Months Ended
In Millions, unless otherwise specified	Sep. 30, 2013		Sep. 30, 2013
Schedule of Amounts in Accumulated Other Comprehensive Income Loss [Line Items]	'		'
Accumulated Other Comprehensive Income loss Beginning Balance	($318.70)		($320.50)
Other comprehensive (loss) earnings before reclassifications	3.2		-6.6
Amounts reclassified from accumulated other comprehensive loss:	6.2	[1]	17.8	[2]
Accumulated Other Comprehensive Income loss Ending Balance	-309.3		-309.3
Cumulative Foreign Currency Translation	'		'
Schedule of Amounts in Accumulated Other Comprehensive Income Loss [Line Items]	'		'
Accumulated Other Comprehensive Income loss Beginning Balance	13.9		19.5
Other comprehensive (loss) earnings before reclassifications	3.6		-2
Accumulated Other Comprehensive Income loss Ending Balance	17.5		17.5
Unrealized Net Gain (Loss) on Cash Flow Derivatives	'		'
Schedule of Amounts in Accumulated Other Comprehensive Income Loss [Line Items]	'		'
Accumulated Other Comprehensive Income loss Beginning Balance	0.5		0.7
Other comprehensive (loss) earnings before reclassifications	-0.4		0.4
Amounts reclassified from accumulated other comprehensive loss:	-0.1	[1]	-1.1	[2]
Pension Liability	'		'
Schedule of Amounts in Accumulated Other Comprehensive Income Loss [Line Items]	'		'
Accumulated Other Comprehensive Income loss Beginning Balance	-333.1		-340.7
Other comprehensive (loss) earnings before reclassifications	'		-5
Amounts reclassified from accumulated other comprehensive loss:	6.3	[1]	18.9	[2]
Accumulated Other Comprehensive Income loss Ending Balance	($326.80)		($326.80)
[1]	Amounts reclassified from accumulated other comprehensive loss: Realized gains on derivatives reclassified to cost of products sold (0.2 ) Tax provision 0.1 Reclassification net of tax $ (0.1 ) Amortization of pension items: Actuarial losses $ 10.6 (2) Prior year service cost (0.3 )(2) 10.3 Tax benefit (4.0 ) Reclassification net of tax $ 6.3
[2]	Amounts reclassified from accumulated other comprehensive loss: Realized gains on derivatives reclassified to cost of products sold (1.7 ) Tax provision 0.6 Reclassification net of tax $ (1.1 ) Amortization of pension items: Actuarial losses $ 31.5 (4) Prior year service cost (0.7 )(4) 30.8 Tax benefit (11.9 ) Reclassification net of tax $ 18.9

Changes_in_Accumulated_Other_C3

Changes in Accumulated Other Comprehensive Loss by Component (Parenthetical) (Detail) (USD $)	3 Months Ended			9 Months Ended
In Millions, unless otherwise specified	Sep. 30, 2013		Sep. 30, 2012	Sep. 30, 2013		Sep. 30, 2012
Schedule of Amounts in Accumulated Other Comprehensive Income Loss [Line Items]	'		'	'		'
Reclassification net of tax	$0.20		($0.20)	$1.70		($0.90)
Actuarial losses	10.6		8.1	31.5		24.1
Prior year service cost	-0.3		-0.2	-0.7		-0.6
Reclassification net of tax	-6.3		3.4	-13.9		3.4
Reclassification out of Accumulated Other Comprehensive Income	'		'	'		'
Schedule of Amounts in Accumulated Other Comprehensive Income Loss [Line Items]	'		'	'		'
Realized gains on derivatives reclassified to cost of products sold	-0.2		'	-1.7		'
Tax provision	0.1		'	0.6		'
Reclassification net of tax	-0.1		'	-1.1		'
Actuarial losses	10.6	[1]	'	31.5	[1]	'
Prior year service cost	-0.3	[1]	'	-0.7	[1]	'
Other Comprehensive Income Defined Benefit Plans Adjustment Change In Period, Total	10.3		'	30.8		'
Tax benefit	-4		'	-11.9		'
Reclassification net of tax	$6.30		'	$18.90		'
[1]	These accumulated other comprehensive loss components are included in the computation of net periodic pension cost. See Note 9 - Pensions for additional details.