A. O. Smith (AOS) 10-K 17 Feb 16 2015 FY Annual report Financial data

Document and Entity Information

Document and Entity Information - USD ($)	12 Months Ended
	Dec. 31, 2015	Feb. 10, 2016	Jun. 30, 2015
Document Information [Line Items]
Document Type	10-K
Amendment Flag	false
Document Period End Date	Dec. 31, 2015
Document Fiscal Year Focus	2,015
Document Fiscal Period Focus	FY
Trading Symbol	AOS
Entity Registrant Name	SMITH A O CORP
Entity Central Index Key	91,142
Current Fiscal Year End Date	--12-31
Entity Well-known Seasoned Issuer	Yes
Entity Current Reporting Status	Yes
Entity Voluntary Filers	No
Entity Filer Category	Large Accelerated Filer
Common Class A
Document Information [Line Items]
Entity Common Stock, Shares Outstanding		13,121,508
Entity Public Float			$ 41,422,906
Common Stock
Document Information [Line Items]
Entity Common Stock, Shares Outstanding		74,677,900
Entity Public Float			$ 5,322,129,940

CONSOLIDATED BALANCE SHEETS

CONSOLIDATED BALANCE SHEETS - USD ($) $ in Millions	Dec. 31, 2015	Dec. 31, 2014
Assets
Cash and cash equivalents	$ 323.6	$ 319.4
Marketable securities	321.6	222.5
Receivables	501.4	475.4
Inventories	222.9	208.3
Deferred income taxes	39.9	40.5
Other current assets	45.9	52.9
Total Current Assets	1,455.3	1,319
Net property, plant and equipment	442.7	427.7
Goodwill	420.9	428.8
Other intangibles	291	308.5
Other assets	36.6	31.3
Total Assets	2,646.5	2,515.3
Liabilities
Trade payables	424.9	393.8
Accrued payroll and benefits	81.5	70.3
Accrued liabilities	90.2	85.1
Product warranties	43.7	42.3
Long-term debt due within one year	12.9	13.7
Total Current Liabilities	653.2	605.2
Long-term debt	236.1	210.1
Deferred income taxes	21.3	21.4
Product warranties	95.6	93.9
Post-retirement benefit obligation	6.2	9.6
Pension liabilities	134.2	133.1
Other liabilities	57.6	60.7
Total Liabilities	$ 1,204.2	$ 1,134
Commitments and contingencies
Stockholders' Equity
Preferred Stock
Common Stock Value	$ 82.2	$ 82.1
Capital in excess of par value	617.4	600.1
Retained earnings	1,350.7	1,135.5
Accumulated other comprehensive loss	(313.4)	(272)
Treasury stock at cost	(360.5)	(230.5)
Total Stockholders' Equity	1,442.3	1,381.3
Total Liabilities and Stockholders' Equity	2,646.5	2,515.3
Common Class A
Stockholders' Equity
Common Stock Value	$ 65.9	$ 66.1

CONSOLIDATED BALANCE SHEETS (Pa

CONSOLIDATED BALANCE SHEETS (Parenthetical) - shares	Dec. 31, 2015	Dec. 31, 2014
Common Stock, shares issued	82,167,098	82,133,326
Common Class A
Common Stock, shares issued	13,186,698	13,220,470

CONSOLIDATED STATEMENT OF EARNI

CONSOLIDATED STATEMENT OF EARNINGS - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Continuing Operations
Net sales	$ 2,536.5	$ 2,356	$ 2,153.8
Cost of products sold	1,526.7	1,496.7	1,380
Gross profit	1,009.8	859.3	773.8
Selling, general and administrative expenses	610.7	572.1	524.5
Restructuring, impairment and settlement expenses - net			11
Interest expense	7.4	5.7	5.7
Other income - net	(10.8)	(5.2)	(3.8)
Earnings before income taxes	402.5	286.7	236.4
Provision for income taxes	119.6	78.9	66.7
Net Earnings	$ 282.9	$ 207.8	$ 169.7
Net Earnings Per Share of Common Stock	$ 3.19	$ 2.30	$ 1.84
Diluted Net Earnings Per Share of Common Stock	$ 3.16	$ 2.28	$ 1.83

CONSOLIDATED STATEMENT OF COMPR

CONSOLIDATED STATEMENT OF COMPREHENSIVE EARNINGS - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Net earnings	$ 282.9	$ 207.8	$ 169.7
Other comprehensive (loss) earnings
Foreign currency translation adjustments	(42.7)	(16.6)	0.4
Unrealized net gain (loss) on cash flow derivative instruments, less related income tax (provision) benefit of $(0.2) in 2015, $0.1 in 2014 and $(0.2) in 2013	0.3	(0.1)	0.3
Change in pension liability less related income tax provision of $(0.5) in 2015, $(1.0) in 2014 and $(39.7) in 2013	1	3.8	60.7
Comprehensive Earnings	$ 241.5	$ 194.9	$ 231.1

CONSOLIDATED STATEMENT OF COMP6

CONSOLIDATED STATEMENT OF COMPREHENSIVE EARNINGS (Parenthetical) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Unrealized net gain (loss) on cash flow derivative instruments, related income tax (provision) benefit	$ (0.2)	$ 0.1	$ (0.2)
Change in pension liability, related income tax (provision) benefit	$ (0.5)	$ (1)	$ (39.7)

CONSOLIDATED STATEMENT OF CASH

CONSOLIDATED STATEMENT OF CASH FLOWS - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Operating Activities
Net earnings	$ 282.9	$ 207.8	$ 169.7
Adjustments to reconcile earnings from continuing operations to cash provided by operating activities:
Depreciation and amortization	63	59.8	59.7
Pension expense	0.1	28.6	27.9
Stock based compensation expense	8.8	10.8	10.5
Loss on disposal of assets	0.6	0.1	0.2
Net changes in operating assets and liabilities, net of acquisitions:
Current assets and liabilities	10.1	(38.1)	20.5
Noncurrent assets and liabilities	(19.9)	(3.3)	(6.3)
Cash Provided by Operating Activities - continuing operations	345.6	265.7	282.2
Cash Used in Operating Activities - discontinued operations	(1.2)	(1.8)	(2.6)
Cash Provided by Operating Activities	344.4	263.9	279.6
Investing Activities
Acquisition of business			(4)
Investments in marketable securities	(428.8)	(321.9)	(132.7)
Proceeds from sale of marketable securities	315.4	202	226.2
Capital expenditures	(72.7)	(86.1)	(97.7)
Cash Used in Investing Activities	(186.1)	(206)	(8.2)
Financing Activities
Long-term term debt incurred (repaid)	61.7	(13.9)	(20.3)
Long-term debt (repaid) incurred	(33.6)	48.1	(31.2)
Common stock repurchases	(128.1)	(103.8)	(73.7)
Net proceeds from stock option activity	13.7	4.8	10.2
Dividends paid	(67.8)	(54.4)	(42.6)
Cash Used in Financing Activities	(154.1)	(119.2)	(157.6)
Net increase (decrease) in cash and cash equivalents	4.2	(61.3)	113.8
Cash and cash equivalents-beginning of year	319.4	380.7	266.9
Cash and Cash Equivalents-End of Year	$ 323.6	$ 319.4	$ 380.7

CONSOLIDATED STATEMENT OF STOCK

CONSOLIDATED STATEMENT OF STOCKHOLDERS' EQUITY - USD ($) $ in Millions	Total	Common Class A	Common Stock	Capital in Excess of Par Value	Retained Earnings	Accumulated Other Comprehensive Loss	Treasury Stock
Balance at Dec. 31, 2012		$ 66.5	$ 82.1	$ 580.5	$ 855.1	$ (320.5)	$ (69.6)
Conversion of Class A Common Stock		(0.1)		0.1
Foreign currency translation adjustments	$ 0.4					0.4
Net earnings	169.7				169.7
Issuance of share units				(5.1)
Unrealized net gain (loss) on cash flow derivative instruments, less related income tax (provision) benefit of $(0.2) in 2015, $0.1 in 2014 and $(0.2) in 2013	0.3					0.3
Cash dividends on stock					(42.6)
Vesting of share units				(3)			3
Change in pension liability less related income tax provision of $(0.5) in 2015, $(1.0) in 2014 and $(39.7) in 2013	60.7					60.7
Stock based compensation expense				9.8
Exercise of stock options				(3)			7.5
Tax benefit from exercises of stock options and vesting of share units				4.8
Stock incentives and directors' compensation				5.6			0.2
Shares repurchased	(73.7)						(73.7)
Balance at Dec. 31, 2013	1,328.7	66.4	82.1	589.7	982.2	(259.1)	(132.6)
Conversion of Class A Common Stock		(0.3)		0.3
Foreign currency translation adjustments	(16.6)					(16.6)
Net earnings	207.8				207.8
Issuance of share units				(5.1)
Unrealized net gain (loss) on cash flow derivative instruments, less related income tax (provision) benefit of $(0.2) in 2015, $0.1 in 2014 and $(0.2) in 2013	(0.1)					(0.1)
Cash dividends on stock					(54.5)
Vesting of share units				(3.1)			3.1
Change in pension liability less related income tax provision of $(0.5) in 2015, $(1.0) in 2014 and $(39.7) in 2013	3.8					3.8
Stock based compensation expense				10.3
Exercise of stock options				(0.3)			2.6
Tax benefit from exercises of stock options and vesting of share units				2.4
Stock incentives and directors' compensation				5.9			0.2
Shares repurchased	(103.8)						(103.8)
Balance at Dec. 31, 2014	1,381.3	66.1	82.1	600.1	1,135.5	(272)	(230.5)
Conversion of Class A Common Stock		(0.2)	0.1	0.1
Foreign currency translation adjustments	(42.7)					(42.7)
Net earnings	282.9				282.9
Issuance of share units				(4.2)
Unrealized net gain (loss) on cash flow derivative instruments, less related income tax (provision) benefit of $(0.2) in 2015, $0.1 in 2014 and $(0.2) in 2013	0.3					0.3
Cash dividends on stock					(67.7)
Vesting of share units				(3.2)			3.2
Change in pension liability less related income tax provision of $(0.5) in 2015, $(1.0) in 2014 and $(39.7) in 2013	1					1
Stock based compensation expense				8.1
Exercise of stock options				1.1			(5.2)
Tax benefit from exercises of stock options and vesting of share units				10.4
Stock incentives and directors' compensation				5			0.1
Shares repurchased	(128.1)						(128.1)
Balance at Dec. 31, 2015	$ 1,442.3	$ 65.9	$ 82.2	$ 617.4	$ 1,350.7	$ (313.4)	$ (360.5)

CONSOLIDATED STATEMENT OF STOC9

CONSOLIDATED STATEMENT OF STOCKHOLDERS' EQUITY (Parenthetical) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Unrealized net gain (loss) on cash flow derivative instruments, related income tax (provision) benefit	$ (0.2)	$ 0.1	$ (0.2)
Change in pension liability, related income tax (provision) benefit	(0.5)	(1)	(39.7)
Accumulated Other Comprehensive Loss
Unrealized net gain (loss) on cash flow derivative instruments, related income tax (provision) benefit	(0.2)	0.1	(0.2)
Change in pension liability, related income tax (provision) benefit	$ (0.5)	$ (1)	$ (39.7)
Treasury Stock
Exercise of stock options, shares surrendered as proceeds and to pay taxes	209,377	5,846	29,126

Organization and Significant Ac

Organization and Significant Accounting Policies	12 Months Ended
	Dec. 31, 2015
Organization and Significant Accounting Policies	1. Organization and Significant Accounting Policies Organization. Consolidation. Except when otherwise indicated, amounts reflected in the financial statements or the notes thereto relate to the Company’s continuing operations. Use of estimates Fair value of financial instruments. Foreign currency translation. Cash and cash equivalents Marketable securities Inventory valuation. Property, plant and equipment. Goodwill and other intangibles. Impairment of long-lived and amortizable intangible assets. Product warranties. The following table presents the Company’s product warranty liability activity in 2015 and 2014: Years ended December 31 (dollars in millions) 2015 2014 Balance at beginning of year $ 136.2 $ 136.6 Expense 62.8 62.2 Claims settled (59.7 ) (62.6 ) Balance at end of year $ 139.3 $ 136.2 Derivative instruments. Fair Value Measurements. ( Fair Value Measurements 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 measured at fair value on a recurring basis are as follows (dollars in millions): Fair Value Measurement Using December 31, 2015 December 31, 2014 Quoted prices in active markets for identical assets (Level 1) $ 323.9 $ 224.1 Significant other observable inputs (Level 2) (0.3 ) (0.2 ) Total assets measured at fair value $ 323.6 $ 223.9 There were no changes in the valuation techniques used to measure fair values on a recurring basis. Revenue recognition. Contracts and customer purchase orders are used to determine the existence of a sales arrangement. Shipping documents are used to verify shipment. The Company assesses whether the selling price is fixed or determinable based upon the payment terms associated with the transaction and whether the sales price is subject to refund or adjustment. The Company assesses collectability based on the creditworthiness of the customer as determined by credit checks and analysis, as well as the customer’s payment history. The allowance for doubtful accounts was $6.0 million and $3.7 million at December 31, 2015 and 2014, respectively. Reserves for customer returns for defective product are based on historical experience with similar types of sales. Accruals for rebates and incentives are based on pricing agreements and are tied to sales volume. Changes in such accruals may be required if future returns differ from historical experience or if actual sales volume differs from estimated sales volume. Rebates and incentives are recognized as a reduction of sales. Shipping and handling costs billed to customers are included in net sales and the related costs are included in cost of products sold. Advertising. Research and development. Environmental costs. Stock-based compensation. Compensation - Stock Compensation Income taxes. Income Taxes The Company recognizes the tax benefit from an uncertain tax position only if it is more likely than not the tax position will be sustained on examination by the taxing authorities, based on the technical merits of the position. The tax benefits recognized in the financial statements from such positions are then measured based on the largest benefit that has a greater than 50 percent likelihood of being realized upon settlement. Earnings per share of common stock. 2015 2014 2013 Denominator for basic earnings per share - weighted-average shares outstanding 88,811,140 90,293,504 92,118,153 Effect of dilutive stock options, restricted stock and share units 693,450 693,477 669,517 Denominator for diluted earnings per share 89,504,590 90,986,981 92,787,670 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. Reclassifications. Recent Accounting Pronouncements In November 2015, the Financial Accounting Standards Board (FASB) amended Accounting Standard Codification (ASC) 740, Income Taxes In April 2015, the FASB amended ASC 835-30, Interest - Imputation of Interest In May 2014, the FASB issued ASC 606-10, Revenue from Contracts with Customers

Acquisition

Acquisition	12 Months Ended
	Dec. 31, 2015
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 gave the Company access to Eastern Europe and the 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 contingent payment due to the former owners of MiM if certain targets are met for growth in sales, gross profits and operating profits through 2017. The fair value of the purchase price resulted in an allocation to acquired intangible assets totaling $4.3 million of which $2.4 million was 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 year ended December 31, 2013 were not material to the Company’s net sales or pre-tax earnings.

Restructuring, Impairment and S

Restructuring, Impairment and Settlement Income	12 Months Ended
	Dec. 31, 2015
Restructuring, Impairment and Settlement Income	3. Restructuring, Impairment and Settlement Income On March 28, 2013, the Company announced the move of manufacturing operations from its Fergus, Ontario facility to other North American facilities. In 2013, the Company recognized $22.0 million of pre-tax restructuring and impairment expenses, comprised of impairment charges related to long-lived assets totaling $9.2 million, severance costs of $7.5 million, equipment relocation costs of $2.9 million and inventory obsolescence costs totaling $2.4 million, as well as a corresponding $5.6 million income tax benefit related to the expenses related to this move. 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 $4.2 million of income tax expense. The restructuring, impairment and settlement income activities are included in the Company’s North America segment.

Statement of Cash Flows

Statement of Cash Flows	12 Months Ended
	Dec. 31, 2015
Statement of Cash Flows	4. Statement of Cash Flows Supplemental cash flow information is as follows: Years ended December 31 (dollars in millions) 2015 2014 2013 Net change in current assets and liabilities, net of acquisitions: Receivables $ (25.9 ) $ (16.8 ) $ (32.3 ) Inventories (14.7 ) (14.9 ) (28.5 ) Other current assets (4.6 ) (7.7 ) (7.5 ) Trade payables 31.0 6.9 58.0 Accrued liabilities, including payroll and benefits 12.5 2.1 29.4 Income taxes payable 11.8 (7.7 ) 1.4 $ 10.1 $ (38.1 ) $ 20.5

Inventories

Inventories	12 Months Ended
	Dec. 31, 2015
Inventories	5. Inventories December 31 (dollars in millions) 2015 2014 Finished products $ 85.7 $ 100.2 Work in process 13.4 10.7 Raw materials 139.6 121.3 Inventories, at FIFO cost 238.7 232.2 LIFO reserve (15.8 ) (23.9 ) $ 222.9 $ 208.3 The Company recognized after-tax LIFO expense (income) of $1.1 million, $(0.1) million and $0.1 million in 2015, 2014 and 2013, respectively.

Property, Plant and Equipment

Property, Plant and Equipment	12 Months Ended
	Dec. 31, 2015
Property, Plant and Equipment	6. Property, Plant and Equipment December 31 (dollars in millions) 2015 2014 Land $ 10.8 $ 11.2 Buildings 237.9 230.6 Equipment 530.9 504.5 Software 87.2 69.6 866.8 815.9 Less accumulated depreciation and amortization 424.1 388.2 $ 442.7 $ 427.7

Goodwill and Other Intangible A

Goodwill and Other Intangible Assets	12 Months Ended
	Dec. 31, 2015
Goodwill and Other Intangible Assets	7. Goodwill and Other Intangible Assets Changes in the carrying amount of goodwill during the years ended December 31, 2015 and 2014 consisted of the following: (dollars in millions) North America Rest of World Total Balance at December 31, 2013 $ 372.9 $ 60.6 $ 433.5 Currency translation adjustment (4.4 ) (0.3 ) (4.7 ) Balance at December 31, 2014 368.5 60.3 428.8 Currency translation adjustment (7.5 ) (0.4 ) (7.9 ) Balance at December 31, 2015 $ 361.0 $ 59.9 $ 420.9 The carrying amount of other intangible assets consisted of the following: 2015 2014 December 31 (dollars in millions) Gross Accumulated Net Gross Accumulated Net Amortizable intangible assets Patents $ 6.6 $ (5.3 ) $ 1.3 $ 6.7 $ (5.0 ) $ 1.7 Customer lists 231.6 (83.1 ) 148.5 232.3 (69.2 ) 163.1 Total amortizable intangible assets 238.2 (88.4 ) 149.8 239.0 (74.2 ) 164.8 Indefinite-lived intangible assets Trade names 141.2 — 141.2 143.7 — 143.7 Total intangible assets $ 379.4 $ (88.4 ) $ 291.0 $ 382.7 $ (74.2 ) $ 308.5 Amortization expenses of other intangible assets of $14.2 million, $14.3 million, and $14.4 million were recorded in 2015, 2014 and 2013, respectively. In the future, excluding the impact of any future acquisitions, the Company expects amortization expense of approximately $14.3 million annually and the intangible assets will be amortized over a weighted average period of 14 years. The Company concluded that no goodwill impairment existed at the time of the annual impairment tests which were performed in the fourth quarters of 2015, 2014 and 2013. No impairments of other intangible assets were recorded in 2015, 2014 and 2013.

Debt and Lease Commitments

Debt and Lease Commitments	12 Months Ended
	Dec. 31, 2015
Debt and Lease Commitments	8. Debt and Lease Commitments December 31 (dollars in millions) 2015 2014 Bank credit lines, average year-end interest rates of 1.3% for 2015 and 2.7% for 2014 $ 10.2 $ 8.0 Revolving credit agreement borrowings, average year-end interest rates of 1.5% for 2015 and 1.3% for 2014 80.0 130.0 Commercial paper, average year-end interest rates of 1.1% for 2015 and 2014 56.8 42.5 Term notes with insurance companies, expiring through 2030, average year-end interest rates of 3.9% for 2015 and 6.1% for 2014 89.0 22.6 Canadian term notes with insurance companies, expiring through 2018, average year-end interest rates of 5.3% for 2015 and 2014 13.0 20.7 249.0 223.8 Less long-term debt due within one year 12.9 13.7 Long-term debt $ 236.1 $ 210.1 On January 15, 2015, the Company issued $75 million in term notes to an insurance company. Principal payments commence in 2020 and the notes mature in 2030. The notes have an interest rate of 3.52 percent. The proceeds of the notes were used to pay down borrowings under the Company’s revolving credit facility. The Company has a $400 million multi-year multi-currency revolving credit agreement with a group of eight banks, which expires on December 12, 2017. The facility has an accordion provision which allows it to be increased up to $500 million if certain conditions (including lender approval) are satisfied. Borrowings under the Company’s bank credit lines and commercial paper borrowings are supported by the 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 December 31, 2015 and 2014. At its option, the Company either maintains cash balances or pays fees for bank credit and services. Scheduled maturities of long-term debt within each of the five years subsequent to December 31, 2015 are as follows: Years ending December 31 (dollars in millions) Amount 2016 $ 12.9 2017 154.0 2018 7.1 2019 — 2020 6.8 Future minimum payments under non-cancelable operating leases relating mostly to office, manufacturing and warehouse facilities total $39.5 million and are due as follows: Years ending December 31 (dollars in millions) Amount 2016 $ 19.7 2017 4.3 2018 3.8 2019 2.7 2020 1.8 Thereafter 7.2 Rent expense, including payments under operating leases, was $28.8 million, $24.3 million and $20.7 million in 2015, 2014 and 2013, respectively. Interest paid by the Company was $6.4 million, $5.8 million and $5.9 million in 2015, 2014 and 2013, respectively. The Company capitalized interest expense of $0.2 million and $0.4 million in 2015 and 2014, respectively.

Stockholders' Equity

Stockholders' Equity	12 Months Ended
	Dec. 31, 2015
Stockholders' Equity	9. Stockholders’ Equity The Company’s authorized capital consists of three million shares of Preferred Stock $1 par value, 14 million shares of Class A Common Stock $5 par value, and 120 million shares of Common Stock $1 par value. The Common Stock has equal dividend rights with Class A Common Stock and is entitled, as a class, to elect one-third of the Board of Directors and has 1/10th vote per share on all other matters. Class A Common Stock is convertible to Common Stock on a one for one basis. There were 135,088 shares during 2015, 272,184 shares during 2014 and 85,792 shares during 2013, of Class A Common Stock converted into Common Stock. Regular dividends paid on the A. O. Smith Corporation Class A Common Stock and Common Stock amounted to $0.76, $0.60 and $0.46 per share in 2015, 2014 and 2013, respectively. In 2013, the Company’s Board of Directors approved adding 2,000,000 shares of Common Stock to an existing discretionary share repurchase authority. In 2014, the Company’s Board of Directors authorized the purchase of an additional 3,500,000 shares of the Company’s Common Stock. In 2015, the Company’s Board of Directors authorized the purchase of an additional 2,000,000 shares of the Company’s Common Stock. Under the share repurchase program, the Company’s Common Stock may be purchased through a combination of a Rule 10b5-1 automatic trading plan and discretionary purchases in accordance with applicable securities laws. The number of shares purchased and the timing of the purchase will depend on a number of factors, including share price, trading volume and general market conditions, as well as on working capital requirements, general business conditions and other factors, including alternative investment opportunities. The share repurchase authorization remains effective until terminated by the Board of Directors which may occur at any time, subject to the parameters of any Rule 10b5-1 automatic trading plan that the Company may then have in effect. In 2015, the Company purchased 1,908,237 shares at a total cost of $128.1 million. As of December 31, 2015, there were 2,589,756 shares remaining on the existing repurchase authorization. In 2014, the Company purchased 2,154,783 shares at a cost of $103.8 million. In 2013, the Company purchased 1,771,066 shares at a cost of $73.7 million. At December 31, 2015, a total of 65,190 and 7,340,173 shares of Class A Common Stock and Common Stock, respectively, were held as treasury stock. At December 31, 2014, a total of 65,190 and 5,889,073 shares of Class A Common Stock and Common Stock, respectively, were held as treasury stock. Accumulated other comprehensive loss is as follows: December 31 (dollars in millions) 2015 2014 Cumulative foreign currency translation adjustments $ (39.4 ) $ 3.3 Unrealized net gain on cash flow derivative instruments less related income tax provision of $(0.8) in 2015 and $(0.5) in 2014 1.2 0.9 Pension liability less related income tax benefit of $177.7 in 2015 and $178.2 in 2014 (275.2 ) (276.2 ) $ (313.4 ) $ (272.0 ) Changes to accumulated other comprehensive loss by component are as follows: Year ended 2015 2014 Cumulative foreign currency translation Balance at beginning of period $ 3.3 $ 19.9 Other comprehensive loss before reclassifications (42.7 ) (16.6 ) Balance at end of period (39.4 ) 3.3 Unrealized net gain on cash flow derivatives Balance at beginning of period 0.9 1.0 Other comprehensive earnings before reclassifications 3.7 2.0 Realized gains on derivatives reclassified to cost of products sold (net of tax provision of $2.3 and $1.3 in 2015 and 2014, respectively) (1) (3.4 ) (2.1 ) Balance at end of period 1.2 0.9 Pension liability Balance at beginning of period (276.2 ) (280.0 ) Other comprehensive loss before reclassifications (9.6 ) (17.0 ) Amounts reclassified from accumulated other comprehensive loss (1) 10.6 20.8 Balance at end of period (275.2 ) (276.2 ) Total accumulated other comprehensive loss, end of period $ (313.4 ) $ (272.0 ) (1) Realized gains on derivatives reclassified to cost of products sold (5.7 ) (3.4 ) Tax provision 2.3 1.3 Reclassification net of tax $ (3.4 ) $ (2.1 ) Amortization of pension items: Actuarial losses $ 19.0 (2) $ 34.8 (2) Prior year service cost (1.4 ) (2) (1.0 ) (2) 17.6 33.8 Tax benefit (7.0 ) (13.0 ) Reclassification net of tax $ 10.6 $ 20.8 (2) These accumulated other comprehensive loss components are included in the computation of net periodic benefit cost. See Note 11 - Pensions and Other Post-retirement Benefits for additional details

Stock Based Compensation

Stock Based Compensation	12 Months Ended
	Dec. 31, 2015
Stock Based Compensation	10. 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 shareholders in 2002. The number of shares available for granting of options or share units at December 31, 2015, was 1,994,172. Upon stock option exercise or share unit vesting, shares are issued from treasury stock. Total stock based compensation expense recognized in 2015, 2014 and 2013 was $8.8 million, $10.8 million and $10.5 million, respectively. Stock options The stock options granted in 2015, 2014 and 2013 have three year pro rata vesting from the dates 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 2015, 2014 and 2013 expire ten years after date of grant. Stock option compensation recognized in 2015, 2014 and 2013 was $4.0 million, $4.9 million and $4.5 million, respectively. Included in the stock option expense recognized in 2015, 2014 and 2013 is 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 shares, all of which are Common Stock, were as follows: Weighted-Avg. Years Ended December 31 (dollars in millions) Exercise Price 2015 2014 2013 Outstanding at beginning of year $ 27.50 1,577,003 1,440,623 1,530,734 Granted 2015—$61.53 per share 242,495 2014—$46.47 to $50.67 per share 298,750 2013—$34.92 to $52.93 per share 361,700 Exercised 2015—$9.50 to $46.47 per share (489,104 ) $ 10.2 2014—$8.20 to $34.92 per share (158,251 ) 2.6 2013—$8.20 to $22.99 per share (446,746 ) 6.0 Forfeited 2015—$22.99 to $61.53 per share (3,615 ) 2014—$34.92 to $46.47 per share (4,119 ) 2013—$22.99 to $34.92 per share (5,065 ) Outstanding at end of year (2015—$9.50 to $61.53 per share) 36.05 1,326,779 1,577,003 1,440,623 Exercisable at end of year 25.58 772,093 932,639 740,919 The aggregate intrinsic value for the outstanding and exercisable options as of December 31, 2015 is $53.8 million and $39.4 million, respectively. The average remaining contractual life for outstanding and exercisable options is eight years and seven years, respectively. The following table summarizes weighted-average information by range of exercise prices for stock options outstanding and exercisable at December 31, 2015: Range of Exercise Prices Options Weighted- Options Weighted- Weighted- $9.50 to $22.08 309,701 $ 14.17 309,701 $ 14.17 5 years $22.99 to $34.92 476,795 30.81 362,126 29.51 8 years $36.27 to $61.53 540,283 53.23 100,266 46.60 9 years 1,326,779 772,093 The weighted-average fair value per option at the date of grant during 2015, 2014 and 2013, using the Black-Scholes option-pricing model, was $17.17, $16.55 and $12.57, respectively. Assumptions were as follows: 2015 2014 2013 Expected life (years) 5.9 6.0 6.1 Risk-free interest rate 2.0 % 2.7 % 2.0 % Dividend yield 1.0 % 1.1 % 1.1 % Expected volatility 29.3 % 36.6 % 38.4 % The expected life is based on historical exercise behavior and the projected exercises 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 respective expected life of the option. The expected dividend yield is based on the expected 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. Stock Appreciations Rights (SARs) Certain non-U.S.-based employees are granted SARs. Each SAR award grants the employee the right to receive cash equal to the excess of the share price of the Common Stock on the date that a participant exercises such right over the grant date price of the stock. SARs granted in the year ended December 31, 2015 have three year pro rata vesting from the date of grant. SARs are issued at exercise prices equal to the fair value of Common Stock on the date of grant and expire ten years from the date of grant. Compensation expense for SARs is remeasured at each reporting period based on the estimated fair value on the date of grant using the Black-Scholes option-pricing model, using assumptions similar to stock option awards. SARs are subsequently remeasured at each interim reporting period based on a revised Black-Scholes value. In 2015, the Company granted 13,115 cash-settled SARs and no SARs were exercisable. Stock based compensation expense attributable to SARS was minimal in 2015. Restricted stock and share units Participants may also be awarded shares of restricted stock or share units under the Plan. The Company granted 76,096, 110,691 and 144,696 share units under the plan in 2015, 2014 and 2013, respectively. The share units were valued at $4.7 million, $5.1 million and $5.0 million at the date of issuance in 2015, 2014 and 2013, respectively, and will be recognized as compensation expense ratably over the three-year vesting period; however, included in share based compensation is expense associated with the accelerated vesting of share unit awards for certain employees who either are retirement eligible or become retirement eligible during the vesting period. Compensation expense of $4.8 million, $5.9 million and $6.0 million was recognized in 2015, 2014 and 2013, respectively. Certain non-U.S.-based employees receive the cash value of vested shares at the vesting date in lieu of shares. A summary of share unit activity under the plan is as follows: Number of Units Weighted-Average Outstanding at January 1, 2015 416,289 $ 33.06 Granted 76,096 61.58 Vested (161,448 ) 23.47 Forfeited/cancelled (1,675 ) 45.00 Outstanding at December 31, 2015 329,262 44.30 Total compensation expense for share units not yet recognized is $2.4 million at December 31, 2015. The weighted average period over which the expense is expected to be recognized is 15 months.

Pension and Other Post-retireme

Pension and Other Post-retirement Benefits	12 Months Ended
	Dec. 31, 2015
Pension and Other Post-retirement Benefits	11. Pension and Other Post-retirement Benefits The Company provides retirement benefits for all U.S. employees including benefits for employees of previously owned businesses which were earned up to the date of sale. The Company also has two foreign pension plans, neither of which is material to the Company’s financial position. The Company has a defined contribution plan which matches 100 percent of the first one percent of contributions made by participating employees and matches 50 percent of the next five percent of employee contributions. The Company also has defined contribution plans for certain hourly employees which provide for matching Company contributions. The Company also has a defined benefit plan for salaried employees and its non-union hourly workforce. In 2009, the Company announced U.S. employees hired after January 1, 2010, would not participate in the defined benefit plan, and benefit accruals for the majority of current salaried and hourly employees sunset on December 31, 2014. Beginning in 2015, an additional Company contribution is being made to the defined contribution plan in lieu of benefits earned in a defined benefit plan. The Company also has defined benefit and contribution plans for certain union hourly employees. The Company has unfunded defined-benefit post-retirement plans covering certain hourly and salaried employees that provide medical and life insurance benefits from retirement to age 65. Certain hourly employees retiring after January 1, 1996, are subject to a maximum annual benefit and salaried employees hired after December 31, 1993, are not eligible for post-retirement medical benefits. The Company amended its pension plan in 2014 to offer a one-time opportunity to pay pension benefits to former employees in a lump sum. These amendments did not have a significant impact on the plan. Former employees eligible for the voluntary lump sum payment option are generally those who are vested participants of the pension plan who terminated employment prior to January 1, 2014 and who have not yet started receiving monthly payments of their pension benefits. Eligible participants had until October 31, 2014 to make their election. For the approximately 2,700 former employees who made the election, the Company made payments of approximately $50 million in December 2014 and funded the payments from existing pension plan assets. The Company did not incur any non-cash charges related to settling this liability as the payments did not exceed settlement thresholds. As of December 31, 2015, the Company changed the method used to estimate the service and interest components of net periodic benefit cost for its pension plan and its postretirement benefit plan. This change compared to the previous method will result in a decrease in the service and interest components for pension cost in 2016. Historically, the Company estimated the service and interest cost components utilizing a single weighted-average discount rate derived from the yield curve used to measure the benefit obligation at the beginning of the period. The Company has elected to utilize an approach that discounts the individual expected cash flows underlying the service cost and interest cost using the applicable spot rates derived from the yield curve used in the determination of the benefit obligation to the relevant projected cash flows. This change was made to provide a more precise measurement of service and interest costs by improving the correlation between the projected benefit cash flows to the corresponding spot yield curve rates. This change does not affect the measurement of the total benefit obligations but will reduce the service and interest cost for the pension plan. The Company has accounted for this change as a change in accounting estimate that is inseparable from a change in accounting principle and accordingly has accounted for it prospectively beginning January 1, 2016. Obligations and Funded Status Pension and Post-Retirement Disclosure Information under ASC 715 The following tables present the changes in benefit obligations, plan assets and funded status for domestic pension and post-retirement plans and the components of net periodic benefit costs. Pension Benefits Post-retirement Benefits Years ended December 31 (dollars in millions) 2015 2014 2015 2014 Accumulated benefit obligation (ABO) at December 31 $ 889.4 $ 948.4 N/A N/A Change in projected benefit obligations (PBO) PBO at beginning of year $ (956.7 ) $ (937.0 ) $ (10.4 ) $ (10.9 ) Service cost (1.9 ) (7.9 ) (0.1 ) (0.1 ) Interest cost (37.6 ) (44.7 ) (0.3 ) (0.5 ) Participant contributions — — (0.2 ) (0.2 ) Plan amendments (2.5 ) — 3.7 — Actuarial gain (loss) including assumption changes 45.6 (83.2 ) — — Benefits paid 60.2 116.1 0.7 1.3 PBO at end of year $ (892.9 ) $ (956.7 ) $ (6.6 ) $ (10.4 ) Change in fair value of plan assets Plan assets at beginning of year $ 823.9 $ 822.3 $ — $ — Actual return on plan assets (5.3 ) 110.1 — — Contribution by the company 0.5 7.6 0.5 1.1 Participant contributions — — 0.2 0.2 Benefits paid (60.1 ) (116.1 ) (0.7 ) (1.3 ) Plan assets at end of year $ 759.0 $ 823.9 $ — $ — Funded status $ (133.9 ) $ (132.8 ) $ (6.6 ) $ (10.4 ) Amount recognized in the balance sheet Current liabilities $ (1.8 ) $ (0.5 ) $ (0.4 ) $ (0.8 ) Non-current liabilities (132.1 ) (132.3 ) (6.2 ) (9.6 ) Net pension liability at end of year $ (133.9 )* $ (132.8 )* $ (6.6 ) $ (10.4 ) Amounts recognized in accumulated other comprehensive loss before tax Net actuarial loss (gain) $ 461.3 $ 463.2 $ (2.4 ) $ (2.6 ) Prior service cost (2.6 ) (6.1 ) (3.3 ) — Total recognized in accumulated other comprehensive loss $ 458.7 $ 457.1 $ (5.7 ) $ (2.6 ) * In addition, the Company has a liability for a foreign pension plan of $0.3 million at December 31, 2015 and 2014. Pension Benefits Post-retirement Benefits Years ended December 31 (dollars in millions) 2015 2014 2013 2015 2014 2013 Net periodic benefit cost Service cost $ 1.9 $ 7.9 $ 9.0 $ 0.1 $ 0.1 $ 0.1 Interest cost 37.6 44.7 39.5 0.3 0.5 0.5 Expected return on plan assets (57.5 ) (60.3 ) (61.7 ) — — — Amortization of unrecognized: Net actuarial loss (gain) 19.1 35.1 42.0 (0.1 ) (0.4 ) (0.3 ) Prior service cost (1.0 ) (1.0 ) (0.9 ) (0.4 ) — — Curtailment and other one-time charges — 2.2 — — — — Defined-benefit plan cost 0.1 28.6 27.9 $ (0.1 ) $ 0.2 $ 0.3 Various U.S. defined contribution plans cost 10.8 6.1 5.4 $ 10.9 $ 34.7 $ 33.3 Other changes in plan assets and projected benefit obligation recognized in other comprehensive loss Net actuarial loss (gain) $ 17.2 $ 33.4 $ (58.7 ) $ — $ — $ 0.3 Amortization of net actuarial (loss) gain (19.1 ) (37.3 ) (42.0 ) 0.1 0.3 0.3 Prior service cost 2.5 — — (3.7 ) — — Amortization of prior service cost 1.0 1.0 0.9 0.4 — — Total recognized in other comprehensive loss 1.6 (2.9 ) (99.8 ) (3.2 ) 0.3 0.6 Total recognized in net periodic cost (benefit)and other comprehensive loss $ 1.7 $ 25.7 $ (71.9 ) $ (3.3 ) $ 0.5 $ 0.9 The estimated net actuarial loss and prior service cost for the pension plans that will be amortized from accumulated other comprehensive loss into net periodic benefit cost during 2016 are $16.7 million and $(1.1) million, respectively. The estimated net actuarial loss and prior year service cost for the post-retirement benefit plans that will be amortized from accumulated other comprehensive loss into net periodic benefit cost during 2016 are $0.2 million and $(0.4) million, respectively. As permitted under ASC 715, the amortization of any prior service cost was previously determined using a straight-line amortization of the cost over the average remaining service period of employees expected to receive benefits under the plan. Beginning in 2015 the amortization occurs over the average remaining life expectancy of participants expected to receive benefits under the plan as permitted under ASC 715. The 2015 and 2014 after tax adjustments for additional minimum pension liability resulted in other comprehensive gain of $1.0 million and $1.6 million, respectively. Actuarial assumptions used to determine benefit obligations at December 31 are as follows: Pension Benefits Post-retirement Benefits 2015 2014 2015 2014 Discount rate 4.40 % 4.05 % 4.55 % 4.00 % Average salary increases 4.00 % 4.00 % 4.00 % 4.00 % Actuarial assumptions used to determine net periodic benefit cost for the year ended December 31 are as follows: Pension Benefits Post-retirement Benefits Years ended December 31 2015 2014 2013 2015 2014 2013 Discount rate 4.05 % 4.85 % 4.05 % 4.00 % 4.70 % 4.05 % Expected long-term return on plan assets 7.75 % 7.75 % 8.00 % n/a n/a n/a Rate of compensation increase 4.00 % 4.00 % 4.00 % 4.00 % 4.00 % 4.00 % Assumptions In developing the expected long-term rate of return on plan assets assumption, the Company evaluated its pension plan’s target and actual asset allocation and expected long-term rates of return of equity and bond indices. The Company also considered its pension plan’s historical ten-year and 25-year compounded annualized returns of 6.1 percent and 9.5 percent, respectively. Assumed health care cost trend rates Assumed health care cost trend rates as of December 31 are as follows: 2015 2014 Health care cost trend rate assumed for next year 6.75 % 7.25 % Rate to which the cost trend rate is assumed to decline (the ultimate trend rate) 5.00 % 5.00 % Year that the rate reaches the ultimate trend rate 2021 2021 A one-percentage-point change in the assumed health care cost trend rates would not result in a material impact on the Company’s consolidated financial statements. Plan Assets The Company’s pension plan weighted asset allocations as of December 31 by asset category are as follows: Asset Category 2015 2014 Equity securities 47 % 50 % Debt securities 39 37 Real estate 9 8 Private equity 5 4 Other — 1 100 % 100 % The following tables present the fair value measurement of the Company’s plan assets as of December 31, 2015 and 2014 (dollars in millions): December 31, 2015 Asset Category Total Quoted Prices in Significant Other Significant Non- Short-term investments $ 13.8 $ 1.4 $ — $ 12.4 Equity securities Common stocks 238.6 238.6 — — Commingled equity funds 109.6 — 109.6 — Fixed income securities U.S. treasury securities 114.3 114.3 — — Other fixed income securities 91.6 — 91.6 — Commingled fixed income funds 84.1 — 84.1 — Other types of investments Real estate funds 70.9 — — 70.9 Private equity 34.3 — — 34.3 Total fair value of plan asset investments $ 757.2 $ 354.3 $ 285.3 $ 117.6 Non-investment plan assets 1.8 Total plan assets $ 759.0 December 31, 2014 Asset Category Total Quoted Prices in Significant Other Significant Non- Short-term investments $ 23.1 $ 2.4 $ — $ 20.7 Equity securities Common stocks 264.4 264.4 — — Commingled equity funds 134.7 — 134.7 — Fixed income securities U.S. treasury securities 122.9 122.9 — — Other fixed income securities 93.2 — 93.2 — Commingled fixed income funds 83.8 — 83.8 — Other types of investments Real estate funds 64.1 — — 64.1 Private equity 34.8 — — 34.8 Total fair value of plan asset investments $ 821.0 $ 389.7 $ 311.7 $ 119.6 Non-investment plan assets 2.9 Total plan assets $ 823.9 The following table presents a reconciliation of the fair value measurements using significant unobservable inputs (Level 3) as of December 31, 2015 and 2014 (dollars in millions): Short term Other fixed Real Private Total Balance at December 31, 2013 $ 14.0 $ 0.3 $ 57.2 $ 37.7 $ 109.2 Actual return (loss) on plan assets: Relating to assets still held at the reporting date — — 6.2 1.6 7.8 Relating to assets sold during the period — (0.3 ) — 3.4 3.1 Purchases, sales and settlements 6.7 — 0.7 (7.9 ) (0.5 ) Balance at December 31, 2014 20.7 — 64.1 34.8 119.6 Actual return (loss) on plan assets: Relating to assets still held at the reporting date — — 6.8 (0.1 ) 6.7 Relating to assets sold during the period — — — 7.8 7.8 Purchases, sales and settlements (8.3 ) — — (8.2 ) (16.5 ) Balance at December 31, 2015 $ 12.4 $ — $ 70.9 $ 34.3 $ 117.6 The Company’s investment policies employ an approach whereby a diversified blend of equity and bond investments is used to maximize the long-term return of plan assets for a prudent level of risk. Equity investments are diversified across domestic and non-domestic stocks, as well as growth, value, and small to large capitalizations. Bond investments include corporate and government issues, with short-, mid- and long-term maturities, with a focus on investment grade when purchased. The Company’s target allocation to equity managers is between 45 to 55 percent with the remainder allocated primarily to bonds and a small allocation to real estate, private equity managers and cash. Investment and market risks are measured and monitored on an ongoing basis through regular investment portfolio reviews, annual liability measurements and periodic asset/liability studies. The Company’s actual asset allocations are in line with target allocations. The Company regularly reviews its actual asset allocation and periodically rebalances its investments to the targeted allocation when considered appropriate. There was no Company stock included in plan assets at December 31, 2015. Cash Flows The Company was not required to and did not make any contributions in 2015 and is not required to make a contribution in 2016. Estimated Future Payments The following benefit payments, which reflect expected future service, as appropriate, are expected to be paid: Years ending December 31 (dollars in millions) Pension Benefits Post-retirement 2016 $ 61.4 $ 0.4 2017 60.0 0.4 2018 66.7 0.4 2019 59.7 0.4 2020 65.5 0.4 2021 – 2025 286.2 2.2

Derivative instruments

Derivative instruments	12 Months Ended
	Dec. 31, 2015
Derivative instruments	12. Derivative instruments ASC 815 Derivatives and Hedging The Company designates that all of its hedging instruments 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 loss, 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 exposure as well as raw materials price risk. 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. Principal currencies for which the Company utilizes foreign currency forward contracts include the British pound, Canadian dollar, Euro and Mexican peso. 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 amounts in accumulated other comprehensive loss for cash flow hedges will be reclassified into earnings no later than December 31, 2016. The following table summarizes, by currency, the contractual amounts of the Company’s foreign currency forward contracts: December 31 (dollars in millions) 2015 2014 Buy Sell Buy Sell British pound $ — $ 0.9 $ — $ 0.9 Canadian dollar — 43.2 — 90.3 Euro 21.3 1.7 32.1 1.0 Mexican peso 12.7 — 17.3 — Total $ 34.0 $ 45.8 $ 49.4 $ 92.2 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 commodities 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 of the effective portion of the contracts as of December 31, 2015 was recorded in accumulated other comprehensive loss and will be reclassified into cost of products sold in the periods in which the underlying transactions are recorded in earnings. The effective portion of the contracts will be reclassified within one year. Commodity hedges outstanding at December 31, 2015 total approximately 1.7 million pounds of copper. The impact of derivative contracts on the Company’s financial statements is as follows: Fair value of derivative instruments designated as hedging instruments under ASC 815: Fair Value December 31 (dollars in millions) Balance Sheet Location 2015 2014 Foreign currency contracts Other current assets $ 3.6 $ 4.6 Accrued liabilities (1.3 ) (3.0 ) Commodities contracts Accrued liabilities (0.3 ) (0.2 ) Total derivatives designated as hedging instruments $ 2.0 $ 1.4 The effect of derivative instruments on the statement of earnings is as follows. Year ended December 31 (dollars in millions) Derivatives in ASC 815 cash flow hedging Amount of gain Location of gain Amount of gain Location of gain portion) Amount of gain 2015 2014 2015 2014 2015 2014 Foreign currency contracts $ 6.9 $ 3.6 Cost of products sold $ 6.2 $ 3.6 N/A $ — $ — Commodities contracts (0.7 ) (0.2 ) Cost of products sold (0.5 ) (0.2 ) Cost of products sold — — $ 6.2 $ 3.4 $ 5.7 $ 3.4 $ — $ —

Income Taxes

Income Taxes	12 Months Ended
	Dec. 31, 2015
Income Taxes	13. Income Taxes The components of the provision (benefit) for income taxes consisted of the following: Years ended December 31 (dollars in millions) 2015 2014 2013 Current: Federal $ 82.9 $ 48.7 $ 53.9 State 13.9 10.4 9.6 International 23.6 22.4 19.1 Deferred: Federal (4.2 ) (5.2 ) (8.4 ) State 2.2 (0.2 ) (0.5 ) International 1.2 2.8 (7.0 ) $ 119.6 $ 78.9 $ 66.7 The provision for income taxes differs from the U.S. federal statutory rate due to the following items: Years ended December 31 2015 2014 2013 Provision at U.S. federal statutory rate 35.0 % 35.0 % 35.0 % State income and franchise taxes, net of federal benefit 2.6 2.3 2.5 International income tax rate differential - China (6.8 ) (8.2 ) (8.1 ) International income tax rate differential - other 0.2 0.4 0.7 U.S. manufacturing credit (1.3 ) (2.1 ) (1.9 ) Research tax credits (0.3 ) (0.4 ) (0.8 ) Other 0.3 0.5 0.8 29.7 % 27.5 % 28.2 % Components of earnings before income taxes were as follows: Years ended December 31 (dollars in millions) 2015 2014 2013 U.S. $ 255.7 $ 150.6 $ 151.9 International 146.8 136.1 84.5 $ 402.5 $ 286.7 $ 236.4 Total income taxes paid by the Company amounted to $97.5 million, $88.9 million, and $70.2 million in 2015, 2014 and 2013, respectively. As of December 31, 2015, the Company has $47.9 million accrued for its estimate of the tax costs due upon repatriation of undistributed foreign earnings it considers to be not permanently reinvested. At December 31, 2015, the Company had undistributed foreign earnings of $875.9 million, of which $691.9 million are considered permanently reinvested. No U.S. income tax provision or foreign withholding tax provisions have been made on foreign earnings that remain permanently reinvested. The Company considers permanently reinvested earnings outside the U.S. on the basis of estimates that future domestic cash generation will be sufficient to meet future domestic cash needs and its specific plans for reinvestment of foreign subsidiary earnings. In addition, no provision or benefit for U.S. income taxes has been made on foreign currency translation gains or losses. As of December 31, 2015, $645.2 million of cash and cash equivalents and marketable securities were held by our foreign subsidiaries. The tax effects of temporary differences of assets and liabilities between income tax and financial reporting are as follows: December 31 (dollars in millions) 2015 2014 Assets Liabilities Assets Liabilities Employee benefits $ 75.0 $ — $ 77.0 $ — Product liability and warranties 66.8 — 65.8 — Inventories — 4.4 — 4.2 Accounts receivable 13.0 — 11.7 — Property, plant and equipment — 36.9 — 39.4 Intangibles — 54.3 — 52.1 Environmental liabilities 2.7 — 3.1 — Undistributed foreign earnings — 47.9 — 50.7 Tax loss and credit carryovers 14.6 — 14.9 — All other 3.4 — 4.7 — Valuation allowance (11.0 ) — (9.8 ) — $ 164.5 $ 143.5 $ 167.4 $ 146.4 Net asset $ 21.0 $ 21.0 These deferred tax assets and liabilities are classified in the balance sheet as current or long-term based on the balance sheet classification of the related assets and liabilities as follows: December 31 (dollars in millions) 2015 2014 Current deferred income tax assets $ 39.9 $ 40.5 Long-term deferred income tax assets 2.4 1.9 Long-term deferred income tax liabilities (21.3 ) (21.4 ) Net asset $ 21.0 $ 21.0 The Company believes it is more likely than not that it will realize the current and long-term deferred tax assets through the reduction of future taxable income. Significant factors the Company considered in determining the probability of the realization of the deferred tax assets include historical operating results and expected future earnings. A reconciliation of the beginning and ending amounts of tax loss carryovers, credit carryovers and valuation allowances is as follows: December 31 (dollars in millions) Net Operating Losses and Tax Credits Valuation Allowances 2015 2014 2015 2014 Beginning balance $ 14.9 $ 17.7 $ 9.8 $ 9.6 Additions 1.4 0.6 1.4 1.0 Reductions (1.7 ) (3.4 ) (0.2 ) (0.8 ) Ending balance $ 14.6 $ 14.9 $ 11.0 $ 9.8 The Company has foreign net operating loss carryovers that expire in 2016 through 2023, a foreign tax credit carryover that expires in 2021, and state and local net operating loss carryovers that expire between 2016 and 2032. A reconciliation of the beginning and ending amount of unrecognized benefits is as follows: (Dollars in millions) 2015 2014 Balance at January 1 $ 1.2 $ 1.3 Additions for tax positions of prior years 1.4 — Reductions for tax positions of prior years — (0.1 ) Balance at December 31 $ 2.6 $ 1.2 The amount of unrecognized tax benefits that, if recognized, would affect the effective tax rate is $0.5 million. The Company recognizes potential interest and penalties related to unrecognized tax benefits as a component of income tax expense. At December 31, 2015 there was an immaterial amount of interest and penalties accrued. It is anticipated there will be no decrease in the total amount of unrecognized tax benefits in 2016. The Company’s U.S. federal income tax returns for 2014 and 2015 are subject to audit. The Company is subject to state and local income tax audits for tax years 2000-2015. The Company is subject to non-U.S. income tax examinations for years 2007-2015.

Commitments and Contingencies

Commitments and Contingencies	12 Months Ended
	Dec. 31, 2015
Commitments and Contingencies	14. Commitments and Contingencies The Company is a potentially responsible party in judicial and administrative proceedings seeking to clean up sites which have been environmentally impacted. In each case the Company has established reserves, insurance proceeds and/or a potential recovery from third parties. The Company believes any environmental claims will not have a material effect on its financial position or results of operations. The Company is subject to various claims and pending lawsuits for product liability and other matters arising out of the conduct of the Company’s business. With respect to product liability claims, the Company has self-insured a portion of its product liability loss exposure for many years. The Company has established reserves and has insurance coverage which it believes are adequate to cover incurred claims. For the years ended December 31, 2015 and 2014, the Company had $125 million of product liability insurance for individual losses in excess of $7.5 million. The Company periodically reevaluates its exposure on claims and lawsuits and makes adjustments to its reserves as appropriate. The Company believes, based on current knowledge, consultation with counsel, adequate reserves and insurance coverage that the outcome of such claims and lawsuits will not have a material adverse effect on the Company’s financial position, results of operations or cash flows.

Operations by Segment

Operations by Segment	12 Months Ended
	Dec. 31, 2015
Operations by Segment	15. 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, Europe and India. Both segments manufacture and market comprehensive lines of residential and commercial gas, gas tankless and electric water heaters. Both segments primarily manufacture and market in their respective regions of the world. The North America segment also manufactures and globally markets specialty commercial water heating equipment, condensing and non-condensing boilers and water system tanks. Primarily for Asia, the Rest of World segment also manufactures and markets water treatment products. The Company also markets in-home air purification products in China. The accounting policies of the reportable segments are the same as those described in the “Summary of Significant Accounting Policies” outlined in Note 1. Operating earnings, defined by the Company as earnings before interest, taxes, general corporate and corporate research and development expenses, were used to measure the performance of the segments. Net Sales Earnings Years ended December 31 (dollars in millions) 2015 2014 2013 2015 2014 2013 North America $ 1,703.0 $ 1,621.7 $ 1,520.0 $ 339.9 $ 238.7 $ 211.9 Rest of World 866.1 768.3 668.0 113.0 106.7 88.0 Inter-segment (32.6 ) (34.0 ) (34.2 ) — (0.1 ) — Total segments – sales, operating earnings $ 2,536.5 $ 2,356.0 $ 2,153.8 $ 452.9 $ 345.3 $ 299.9 Corporate expenses (43.0 ) (52.9 ) (57.8 ) Interest expense (7.4 ) (5.7 ) (5.7 ) Earnings before income taxes 402.5 286.7 236.4 Provision for income taxes (119.6 ) (78.9 ) (66.7 ) Earnings from continuing operations $ 282.9 $ 207.8 $ 169.7 In 2015, sales to the North America segment’s two largest customers were $301.7 million and $287.0 million which represented 12 percent and 11 percent of the Company’s net sales, respectively. In 2014, sales to the North America segment’s two largest customers were $296.5 million and $237.2 million which represented 13 percent and ten percent of the Company’s net sales, respectively. In 2013, sales to the North America segment’s two largest customers were $310.3 million and $240.6 million which represented 14 percent and 11 percent of the Company’s net sales, respectively. Assets, depreciation and capital expenditures by segment Total Assets Depreciation and Capital (dollars in millions) 2015 2014 2013 2015 2014 2013 2015 2014 2013 North America $ 1,381.1 $ 1,358.5 $ 1,298.6 $ 41.9 $ 37.8 $ 40.5 $ 43.5 $ 59.4 $ 38.0 Rest of World 544.2 523.8 525.2 19.8 20.0 16.8 28.4 26.5 59.0 Corporate 721.2 633.0 567.7 1.3 2.0 2.4 0.8 0.2 0.7 Total $ 2,646.5 $ 2,515.3 $ 2,391.5 $ 63.0 $ 59.8 $ 59.7 $ 72.7 $ 86.1 $ 97.7 The majority of corporate assets consist of cash, cash equivalents, marketable securities and deferred income taxes. Net sales and long-lived assets by geographic location The following data by geographic area includes net sales based on product shipment destination and long-lived assets based on physical location. Long-lived assets include net property, plant and equipment and other long-term assets. Long-lived Assets Net Sales (dollars in millions) 2015 2014 2013 2015 2014 2013 United States $ 275.2 $ 262.1 $ 238.6 United States $ 1,531.4 $ 1,447.9 $ 1,335.4 China 145.2 131.9 134.9 China 787.1 691.8 581.0 Canada 2.7 3.6 4.7 Canada 129.9 128.8 142.5 Other Foreign 55.2 58.3 46.4 Other Foreign 88.1 87.5 94.9 Total $ 478.3 $ 455.9 $ 424.6 Total $ 2,536.5 $ 2,356.0 $ 2,153.8

Quarterly Results of Operations

Quarterly Results of Operations	12 Months Ended
	Dec. 31, 2015
Quarterly Results of Operations	16. Quarterly Results of Operations (Unaudited) (dollars in millions, except per share amounts) 1st Quarter 2nd Quarter 3rd Quarter 4th Quarter 2015 2014 2015 2014 2015 2014 2015 2014 Net sales $ 618.5 $ 552.2 $ 653.5 $ 595.4 $ 625.1 $ 581.6 $ 639.4 $ 626.8 Gross profit 229.2 195.9 262.4 216.2 255.6 215.3 262.6 231.9 Net earnings 58.4 46.7 71.1 57.3 73.6 50.6 79.8 53.2 Basic earnings per share 0.65 0.51 0.80 0.63 0.83 0.56 0.91 0.59 Diluted earnings per share 0.65 0.51 0.79 0.63 0.82 0.56 0.90 0.59 Common dividends declared 0.19 0.15 0.19 0.15 0.19 0.15 0.19 0.15 Net earnings per share are computed separately for each period, and therefore, the sum of such quarterly per share amounts may differ from the total for the year.

SCHEDULE II - VALUATION AND QUA

SCHEDULE II - VALUATION AND QUALIFYING ACCOUNTS	12 Months Ended
	Dec. 31, 2015
SCHEDULE II - VALUATION AND QUALIFYING ACCOUNTS	SCHEDULE II - VALUATION AND QUALIFYING ACCOUNTS (Dollars in millions) Years ended December 31, 2015, 2014 and 2013 Description Balance at Charged to Deductions Balance at 2015: Valuation allowance for trade and notes receivable $ 3.7 $ 2.6 $ (0.3 ) $ 6.0 Valuation allowance for deferred tax assets 9.8 1.4 (0.2 ) 11.0 2014: Valuation allowance for trade and notes receivable 2.8 1.4 (0.5 ) 3.7 Valuation allowance for deferred tax assets 9.6 1.0 (0.8 ) 9.8 2013: Valuation allowance for trade and notes receivable 4.2 0.2 (1.6 ) 2.8 Valuation allowance for deferred tax assets 7.4 2.2 — 9.6

Organization and Significant 27

Organization and Significant Accounting Policies (Policies)	12 Months Ended
	Dec. 31, 2015
Organization	Organization.
Consolidation	Consolidation. Except when otherwise indicated, amounts reflected in the financial statements or the notes thereto relate to the Company’s continuing operations.
Use of Estimates	Use of estimates
Fair value of financial instruments	Fair value of financial instruments.
Foreign Currency Translation	Foreign currency translation.
Cash and Cash Equivalents	Cash and cash equivalents
Marketable securities	Marketable securities
Inventory Valuation	Inventory valuation.
Property, Plant and Equipment	Property, plant and equipment.
Goodwill and Other Intangibles	Goodwill and other intangibles.
Impairment of Long-Lived and Amortizable Intangible Assets	Impairment of long-lived and amortizable intangible assets.
Product Warranties	Product warranties. The following table presents the Company’s product warranty liability activity in 2015 and 2014: Years ended December 31 (dollars in millions) 2015 2014 Balance at beginning of year $ 136.2 $ 136.6 Expense 62.8 62.2 Claims settled (59.7 ) (62.6 ) Balance at end of year $ 139.3 $ 136.2
Derivative instruments	Derivative instruments.
Fair Value Measurements	Fair Value Measurements. ( Fair Value Measurements 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 measured at fair value on a recurring basis are as follows (dollars in millions): Fair Value Measurement Using December 31, 2015 December 31, 2014 Quoted prices in active markets for identical assets (Level 1) $ 323.9 $ 224.1 Significant other observable inputs (Level 2) (0.3 ) (0.2 ) Total assets measured at fair value $ 323.6 $ 223.9 There were no changes in the valuation techniques used to measure fair values on a recurring basis.
Revenue recognition	Revenue recognition. Contracts and customer purchase orders are used to determine the existence of a sales arrangement. Shipping documents are used to verify shipment. The Company assesses whether the selling price is fixed or determinable based upon the payment terms associated with the transaction and whether the sales price is subject to refund or adjustment. The Company assesses collectability based on the creditworthiness of the customer as determined by credit checks and analysis, as well as the customer’s payment history. The allowance for doubtful accounts was $6.0 million and $3.7 million at December 31, 2015 and 2014, respectively. Reserves for customer returns for defective product are based on historical experience with similar types of sales. Accruals for rebates and incentives are based on pricing agreements and are tied to sales volume. Changes in such accruals may be required if future returns differ from historical experience or if actual sales volume differs from estimated sales volume. Rebates and incentives are recognized as a reduction of sales. Shipping and handling costs billed to customers are included in net sales and the related costs are included in cost of products sold.
Advertising	Advertising.
Research and Development	Research and development.
Environmental Costs	Environmental costs.
Stock-based compensation	Stock-based compensation. Compensation - Stock Compensation
Income taxes	Income taxes. Income Taxes The Company recognizes the tax benefit from an uncertain tax position only if it is more likely than not the tax position will be sustained on examination by the taxing authorities, based on the technical merits of the position. The tax benefits recognized in the financial statements from such positions are then measured based on the largest benefit that has a greater than 50 percent likelihood of being realized upon settlement.
Earnings Per Share of Common Stock	Earnings per share of common stock. 2015 2014 2013 Denominator for basic earnings per share - weighted-average shares outstanding 88,811,140 90,293,504 92,118,153 Effect of dilutive stock options, restricted stock and share units 693,450 693,477 669,517 Denominator for diluted earnings per share 89,504,590 90,986,981 92,787,670 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.
Reclassifications	Reclassifications.
Recent Accounting Pronouncements	Recent Accounting Pronouncements In November 2015, the Financial Accounting Standards Board (FASB) amended Accounting Standard Codification (ASC) 740, Income Taxes In April 2015, the FASB amended ASC 835-30, Interest - Imputation of Interest In May 2014, the FASB issued ASC 606-10, Revenue from Contracts with Customers

Organization and Significant 28

Organization and Significant Accounting Policies (Tables)	12 Months Ended
	Dec. 31, 2015
Schedule of Product Warranty Liability Activity	The following table presents the Company’s product warranty liability activity in 2015 and 2014: Years ended December 31 (dollars in millions) 2015 2014 Balance at beginning of year $ 136.2 $ 136.6 Expense 62.8 62.2 Claims settled (59.7 ) (62.6 ) Balance at end of year $ 139.3 $ 136.2
Schedule of Assets and Liabilities Measured at Fair Value on Recurring Basis	Assets measured at fair value on a recurring basis are as follows (dollars in millions): Fair Value Measurement Using December 31, 2015 December 31, 2014 Quoted prices in active markets for identical assets (Level 1) $ 323.9 $ 224.1 Significant other observable inputs (Level 2) (0.3 ) (0.2 ) Total assets measured at fair value $ 323.6 $ 223.9
Schedule of Computation of Basic and Diluted Weighted Average Shares Used in EPS Calculations	The following table sets forth the computation of basic and diluted weighted-average shares used in the earnings per share calculations: 2015 2014 2013 Denominator for basic earnings per share - weighted-average shares outstanding 88,811,140 90,293,504 92,118,153 Effect of dilutive stock options, restricted stock and share units 693,450 693,477 669,517 Denominator for diluted earnings per share 89,504,590 90,986,981 92,787,670

Statement of Cash Flows (Tables

Statement of Cash Flows (Tables)	12 Months Ended
	Dec. 31, 2015
Schedule of Supplemental Cash Flow Information	Supplemental cash flow information is as follows: Years ended December 31 (dollars in millions) 2015 2014 2013 Net change in current assets and liabilities, net of acquisitions: Receivables $ (25.9 ) $ (16.8 ) $ (32.3 ) Inventories (14.7 ) (14.9 ) (28.5 ) Other current assets (4.6 ) (7.7 ) (7.5 ) Trade payables 31.0 6.9 58.0 Accrued liabilities, including payroll and benefits 12.5 2.1 29.4 Income taxes payable 11.8 (7.7 ) 1.4 $ 10.1 $ (38.1 ) $ 20.5

Inventories (Tables)

Inventories (Tables)	12 Months Ended
	Dec. 31, 2015
Schedule of Inventories	December 31 (dollars in millions) 2015 2014 Finished products $ 85.7 $ 100.2 Work in process 13.4 10.7 Raw materials 139.6 121.3 Inventories, at FIFO cost 238.7 232.2 LIFO reserve (15.8 ) (23.9 ) $ 222.9 $ 208.3

Property, Plant and Equipment (

Property, Plant and Equipment (Tables)	12 Months Ended
	Dec. 31, 2015
Schedule of Property Plant and Equipment	December 31 (dollars in millions) 2015 2014 Land $ 10.8 $ 11.2 Buildings 237.9 230.6 Equipment 530.9 504.5 Software 87.2 69.6 866.8 815.9 Less accumulated depreciation and amortization 424.1 388.2 $ 442.7 $ 427.7

Goodwill and Other Intangible32

Goodwill and Other Intangible Assets (Tables)	12 Months Ended
	Dec. 31, 2015
Schedule of Changes in Carrying Amount of Goodwill	Changes in the carrying amount of goodwill during the years ended December 31, 2015 and 2014 consisted of the following: (dollars in millions) North America Rest of World Total Balance at December 31, 2013 $ 372.9 $ 60.6 $ 433.5 Currency translation adjustment (4.4 ) (0.3 ) (4.7 ) Balance at December 31, 2014 368.5 60.3 428.8 Currency translation adjustment (7.5 ) (0.4 ) (7.9 ) Balance at December 31, 2015 $ 361.0 $ 59.9 $ 420.9
Schedule of Carrying Amount of Other Intangible Assets	The carrying amount of other intangible assets consisted of the following: 2015 2014 December 31 (dollars in millions) Gross Accumulated Net Gross Accumulated Net Amortizable intangible assets Patents $ 6.6 $ (5.3 ) $ 1.3 $ 6.7 $ (5.0 ) $ 1.7 Customer lists 231.6 (83.1 ) 148.5 232.3 (69.2 ) 163.1 Total amortizable intangible assets 238.2 (88.4 ) 149.8 239.0 (74.2 ) 164.8 Indefinite-lived intangible assets Trade names 141.2 — 141.2 143.7 — 143.7 Total intangible assets $ 379.4 $ (88.4 ) $ 291.0 $ 382.7 $ (74.2 ) $ 308.5

Debt and Lease Commitments (Tab

Debt and Lease Commitments (Tables)	12 Months Ended
	Dec. 31, 2015
Schedule of Debt and Lease Commitments	December 31 (dollars in millions) 2015 2014 Bank credit lines, average year-end interest rates of 1.3% for 2015 and 2.7% for 2014 $ 10.2 $ 8.0 Revolving credit agreement borrowings, average year-end interest rates of 1.5% for 2015 and 1.3% for 2014 80.0 130.0 Commercial paper, average year-end interest rates of 1.1% for 2015 and 2014 56.8 42.5 Term notes with insurance companies, expiring through 2030, average year-end interest rates of 3.9% for 2015 and 6.1% for 2014 89.0 22.6 Canadian term notes with insurance companies, expiring through 2018, average year-end interest rates of 5.3% for 2015 and 2014 13.0 20.7 249.0 223.8 Less long-term debt due within one year 12.9 13.7 Long-term debt $ 236.1 $ 210.1
Schedule of Maturities of Long Term Debt	Scheduled maturities of long-term debt within each of the five years subsequent to December 31, 2015 are as follows: Years ending December 31 (dollars in millions) Amount 2016 $ 12.9 2017 154.0 2018 7.1 2019 — 2020 6.8
Schedule of Future Minimum Payments Under Non Cancelable Operating Leases	Future minimum payments under non-cancelable operating leases relating mostly to office, manufacturing and warehouse facilities total $39.5 million and are due as follows: Years ending December 31 (dollars in millions) Amount 2016 $ 19.7 2017 4.3 2018 3.8 2019 2.7 2020 1.8 Thereafter 7.2

Stockholders' Equity (Tables)

Stockholders' Equity (Tables)	12 Months Ended
	Dec. 31, 2015
Schedule of Accumulated Other Comprehensive Loss	Accumulated other comprehensive loss is as follows: December 31 (dollars in millions) 2015 2014 Cumulative foreign currency translation adjustments $ (39.4 ) $ 3.3 Unrealized net gain on cash flow derivative instruments less related income tax provision of $(0.8) in 2015 and $(0.5) in 2014 1.2 0.9 Pension liability less related income tax benefit of $177.7 in 2015 and $178.2 in 2014 (275.2 ) (276.2 ) $ (313.4 ) $ (272.0 )
Changes in Accumulated Other Comprehensive Loss by Component	Changes to accumulated other comprehensive loss by component are as follows: Year ended 2015 2014 Cumulative foreign currency translation Balance at beginning of period $ 3.3 $ 19.9 Other comprehensive loss before reclassifications (42.7 ) (16.6 ) Balance at end of period (39.4 ) 3.3 Unrealized net gain on cash flow derivatives Balance at beginning of period 0.9 1.0 Other comprehensive earnings before reclassifications 3.7 2.0 Realized gains on derivatives reclassified to cost of products sold (net of tax provision of $2.3 and $1.3 in 2015 and 2014, respectively) (1) (3.4 ) (2.1 ) Balance at end of period 1.2 0.9 Pension liability Balance at beginning of period (276.2 ) (280.0 ) Other comprehensive loss before reclassifications (9.6 ) (17.0 ) Amounts reclassified from accumulated other comprehensive loss (1) 10.6 20.8 Balance at end of period (275.2 ) (276.2 ) Total accumulated other comprehensive loss, end of period $ (313.4 ) $ (272.0 ) (1) Realized gains on derivatives reclassified to cost of products sold (5.7 ) (3.4 ) Tax provision 2.3 1.3 Reclassification net of tax $ (3.4 ) $ (2.1 ) Amortization of pension items: Actuarial losses $ 19.0 (2) $ 34.8 (2) Prior year service cost (1.4 ) (2) (1.0 ) (2) 17.6 33.8 Tax benefit (7.0 ) (13.0 ) Reclassification net of tax $ 10.6 $ 20.8 (2) These accumulated other comprehensive loss components are included in the computation of net periodic benefit cost. See Note 11 - Pensions and Other Post-retirement Benefits for additional details

Stock Based Compensation (Table

Stock Based Compensation (Tables)	12 Months Ended
	Dec. 31, 2015
Schedule of Changes in Option Shares	Changes in option shares, all of which are Common Stock, were as follows: Weighted-Avg. Years Ended December 31 (dollars in millions) Exercise Price 2015 2014 2013 Outstanding at beginning of year $ 27.50 1,577,003 1,440,623 1,530,734 Granted 2015—$61.53 per share 242,495 2014—$46.47 to $50.67 per share 298,750 2013—$34.92 to $52.93 per share 361,700 Exercised 2015—$9.50 to $46.47 per share (489,104 ) $ 10.2 2014—$8.20 to $34.92 per share (158,251 ) 2.6 2013—$8.20 to $22.99 per share (446,746 ) 6.0 Forfeited 2015—$22.99 to $61.53 per share (3,615 ) 2014—$34.92 to $46.47 per share (4,119 ) 2013—$22.99 to $34.92 per share (5,065 ) Outstanding at end of year (2015—$9.50 to $61.53 per share) 36.05 1,326,779 1,577,003 1,440,623 Exercisable at end of year 25.58 772,093 932,639 740,919
Schedule of Weighted Average Information by Range of Exercise Prices for Stock Options Outstanding and Exercisable	The following table summarizes weighted-average information by range of exercise prices for stock options outstanding and exercisable at December 31, 2015: Range of Exercise Prices Options Weighted- Options Weighted- Weighted- $9.50 to $22.08 309,701 $ 14.17 309,701 $ 14.17 5 years $22.99 to $34.92 476,795 30.81 362,126 29.51 8 years $36.27 to $61.53 540,283 53.23 100,266 46.60 9 years 1,326,779 772,093
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 2015, 2014 and 2013, using the Black-Scholes option-pricing model, was $17.17, $16.55 and $12.57, respectively. Assumptions were as follows: 2015 2014 2013 Expected life (years) 5.9 6.0 6.1 Risk-free interest rate 2.0 % 2.7 % 2.0 % Dividend yield 1.0 % 1.1 % 1.1 % Expected volatility 29.3 % 36.6 % 38.4 %
Schedule of Share Unit Activity Under Plan	A summary of share unit activity under the plan is as follows: Number of Units Weighted-Average Outstanding at January 1, 2015 416,289 $ 33.06 Granted 76,096 61.58 Vested (161,448 ) 23.47 Forfeited/cancelled (1,675 ) 45.00 Outstanding at December 31, 2015 329,262 44.30

Pension and Other Post-retire36

Pension and Other Post-retirement Benefits (Tables)	12 Months Ended
	Dec. 31, 2015
Schedule of Changes in Benefit Obligation, Plan Assets and Funded Status of Defined Benefit Pension and Post Retirement Benefit Plans	The following tables present the changes in benefit obligations, plan assets and funded status for domestic pension and post-retirement plans and the components of net periodic benefit costs. Pension Benefits Post-retirement Benefits Years ended December 31 (dollars in millions) 2015 2014 2015 2014 Accumulated benefit obligation (ABO) at December 31 $ 889.4 $ 948.4 N/A N/A Change in projected benefit obligations (PBO) PBO at beginning of year $ (956.7 ) $ (937.0 ) $ (10.4 ) $ (10.9 ) Service cost (1.9 ) (7.9 ) (0.1 ) (0.1 ) Interest cost (37.6 ) (44.7 ) (0.3 ) (0.5 ) Participant contributions — — (0.2 ) (0.2 ) Plan amendments (2.5 ) — 3.7 — Actuarial gain (loss) including assumption changes 45.6 (83.2 ) — — Benefits paid 60.2 116.1 0.7 1.3 PBO at end of year $ (892.9 ) $ (956.7 ) $ (6.6 ) $ (10.4 ) Change in fair value of plan assets Plan assets at beginning of year $ 823.9 $ 822.3 $ — $ — Actual return on plan assets (5.3 ) 110.1 — — Contribution by the company 0.5 7.6 0.5 1.1 Participant contributions — — 0.2 0.2 Benefits paid (60.1 ) (116.1 ) (0.7 ) (1.3 ) Plan assets at end of year $ 759.0 $ 823.9 $ — $ — Funded status $ (133.9 ) $ (132.8 ) $ (6.6 ) $ (10.4 ) Amount recognized in the balance sheet Current liabilities $ (1.8 ) $ (0.5 ) $ (0.4 ) $ (0.8 ) Non-current liabilities (132.1 ) (132.3 ) (6.2 ) (9.6 ) Net pension liability at end of year $ (133.9 )* $ (132.8 )* $ (6.6 ) $ (10.4 ) Amounts recognized in accumulated other comprehensive loss before tax Net actuarial loss (gain) $ 461.3 $ 463.2 $ (2.4 ) $ (2.6 ) Prior service cost (2.6 ) (6.1 ) (3.3 ) — Total recognized in accumulated other comprehensive loss $ 458.7 $ 457.1 $ (5.7 ) $ (2.6 ) * In addition, the Company has a liability for a foreign pension plan of $0.3 million at December 31, 2015 and 2014.
Schedule of Net Periodic Benefit Cost	Pension Benefits Post-retirement Benefits Years ended December 31 (dollars in millions) 2015 2014 2013 2015 2014 2013 Net periodic benefit cost Service cost $ 1.9 $ 7.9 $ 9.0 $ 0.1 $ 0.1 $ 0.1 Interest cost 37.6 44.7 39.5 0.3 0.5 0.5 Expected return on plan assets (57.5 ) (60.3 ) (61.7 ) — — — Amortization of unrecognized: Net actuarial loss (gain) 19.1 35.1 42.0 (0.1 ) (0.4 ) (0.3 ) Prior service cost (1.0 ) (1.0 ) (0.9 ) (0.4 ) — — Curtailment and other one-time charges — 2.2 — — — — Defined-benefit plan cost 0.1 28.6 27.9 $ (0.1 ) $ 0.2 $ 0.3 Various U.S. defined contribution plans cost 10.8 6.1 5.4 $ 10.9 $ 34.7 $ 33.3 Other changes in plan assets and projected benefit obligation recognized in other comprehensive loss Net actuarial loss (gain) $ 17.2 $ 33.4 $ (58.7 ) $ — $ — $ 0.3 Amortization of net actuarial (loss) gain (19.1 ) (37.3 ) (42.0 ) 0.1 0.3 0.3 Prior service cost 2.5 — — (3.7 ) — — Amortization of prior service cost 1.0 1.0 0.9 0.4 — — Total recognized in other comprehensive loss 1.6 (2.9 ) (99.8 ) (3.2 ) 0.3 0.6 Total recognized in net periodic cost (benefit)and other comprehensive loss $ 1.7 $ 25.7 $ (71.9 ) $ (3.3 ) $ 0.5 $ 0.9
Schedule of Actuarial Assumptions Used To Determine Benefit Obligations	Actuarial assumptions used to determine benefit obligations at December 31 are as follows: Pension Benefits Post-retirement Benefits 2015 2014 2015 2014 Discount rate 4.40 % 4.05 % 4.55 % 4.00 % Average salary increases 4.00 % 4.00 % 4.00 % 4.00 %
Schedule of Actuarial Assumptions Used To Determine Net Periodic Benefit Cost	Actuarial assumptions used to determine net periodic benefit cost for the year ended December 31 are as follows: Pension Benefits Post-retirement Benefits Years ended December 31 2015 2014 2013 2015 2014 2013 Discount rate 4.05 % 4.85 % 4.05 % 4.00 % 4.70 % 4.05 % Expected long-term return on plan assets 7.75 % 7.75 % 8.00 % n/a n/a n/a Rate of compensation increase 4.00 % 4.00 % 4.00 % 4.00 % 4.00 % 4.00 %
Schedule of Health Care Cost Trend Rates	Assumed health care cost trend rates as of December 31 are as follows: 2015 2014 Health care cost trend rate assumed for next year 6.75 % 7.25 % Rate to which the cost trend rate is assumed to decline (the ultimate trend rate) 5.00 % 5.00 % Year that the rate reaches the ultimate trend rate 2021 2021
Schedule of Weighted Asset Allocations by Asset Category	The Company’s pension plan weighted asset allocations as of December 31 by asset category are as follows: Asset Category 2015 2014 Equity securities 47 % 50 % Debt securities 39 37 Real estate 9 8 Private equity 5 4 Other — 1 100 % 100 %
Schedule of Fair Value Measurement of Plan Assets	The following tables present the fair value measurement of the Company’s plan assets as of December 31, 2015 and 2014 (dollars in millions): December 31, 2015 Asset Category Total Quoted Prices in Significant Other Significant Non- Short-term investments $ 13.8 $ 1.4 $ — $ 12.4 Equity securities Common stocks 238.6 238.6 — — Commingled equity funds 109.6 — 109.6 — Fixed income securities U.S. treasury securities 114.3 114.3 — — Other fixed income securities 91.6 — 91.6 — Commingled fixed income funds 84.1 — 84.1 — Other types of investments Real estate funds 70.9 — — 70.9 Private equity 34.3 — — 34.3 Total fair value of plan asset investments $ 757.2 $ 354.3 $ 285.3 $ 117.6 Non-investment plan assets 1.8 Total plan assets $ 759.0 December 31, 2014 Asset Category Total Quoted Prices in Significant Other Significant Non- Short-term investments $ 23.1 $ 2.4 $ — $ 20.7 Equity securities Common stocks 264.4 264.4 — — Commingled equity funds 134.7 — 134.7 — Fixed income securities U.S. treasury securities 122.9 122.9 — — Other fixed income securities 93.2 — 93.2 — Commingled fixed income funds 83.8 — 83.8 — Other types of investments Real estate funds 64.1 — — 64.1 Private equity 34.8 — — 34.8 Total fair value of plan asset investments $ 821.0 $ 389.7 $ 311.7 $ 119.6 Non-investment plan assets 2.9 Total plan assets $ 823.9
Schedule of Reconciliation of Fair Value Measurements Using Significant Unobservable Inputs	The following table presents a reconciliation of the fair value measurements using significant unobservable inputs (Level 3) as of December 31, 2015 and 2014 (dollars in millions): Short term Other fixed Real Private Total Balance at December 31, 2013 $ 14.0 $ 0.3 $ 57.2 $ 37.7 $ 109.2 Actual return (loss) on plan assets: Relating to assets still held at the reporting date — — 6.2 1.6 7.8 Relating to assets sold during the period — (0.3 ) — 3.4 3.1 Purchases, sales and settlements 6.7 — 0.7 (7.9 ) (0.5 ) Balance at December 31, 2014 20.7 — 64.1 34.8 119.6 Actual return (loss) on plan assets: Relating to assets still held at the reporting date — — 6.8 (0.1 ) 6.7 Relating to assets sold during the period — — — 7.8 7.8 Purchases, sales and settlements (8.3 ) — — (8.2 ) (16.5 ) Balance at December 31, 2015 $ 12.4 $ — $ 70.9 $ 34.3 $ 117.6
Schedule of Estimated Future Payments	The following benefit payments, which reflect expected future service, as appropriate, are expected to be paid: Years ending December 31 (dollars in millions) Pension Benefits Post-retirement 2016 $ 61.4 $ 0.4 2017 60.0 0.4 2018 66.7 0.4 2019 59.7 0.4 2020 65.5 0.4 2021 – 2025 286.2 2.2

Derivative instruments (Tables)

Derivative instruments (Tables)	12 Months Ended
	Dec. 31, 2015
Schedule of Effect of Derivative Instruments on Statement of Earnings	The effect of derivative instruments on the statement of earnings is as follows. Year ended December 31 (dollars in millions) Derivatives in ASC 815 cash flow hedging Amount of gain Location of gain Amount of gain Location of gain portion) Amount of gain 2015 2014 2015 2014 2015 2014 Foreign currency contracts $ 6.9 $ 3.6 Cost of products sold $ 6.2 $ 3.6 N/A $ — $ — Commodities contracts (0.7 ) (0.2 ) Cost of products sold (0.5 ) (0.2 ) Cost of products sold — — $ 6.2 $ 3.4 $ 5.7 $ 3.4 $ — $ —
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: December 31 (dollars in millions) 2015 2014 Buy Sell Buy Sell British pound $ — $ 0.9 $ — $ 0.9 Canadian dollar — 43.2 — 90.3 Euro 21.3 1.7 32.1 1.0 Mexican peso 12.7 — 17.3 — Total $ 34.0 $ 45.8 $ 49.4 $ 92.2
Schedule of Impact of Cash Flow Hedges on Company's Financial Statements	The impact of derivative contracts on the Company’s financial statements is as follows: Fair value of derivative instruments designated as hedging instruments under ASC 815: Fair Value December 31 (dollars in millions) Balance Sheet Location 2015 2014 Foreign currency contracts Other current assets $ 3.6 $ 4.6 Accrued liabilities (1.3 ) (3.0 ) Commodities contracts Accrued liabilities (0.3 ) (0.2 ) Total derivatives designated as hedging instruments $ 2.0 $ 1.4

Income Taxes (Tables)

Income Taxes (Tables)	12 Months Ended
	Dec. 31, 2015
Components of Provision for Income Taxes	The components of the provision (benefit) for income taxes consisted of the following: Years ended December 31 (dollars in millions) 2015 2014 2013 Current: Federal $ 82.9 $ 48.7 $ 53.9 State 13.9 10.4 9.6 International 23.6 22.4 19.1 Deferred: Federal (4.2 ) (5.2 ) (8.4 ) State 2.2 (0.2 ) (0.5 ) International 1.2 2.8 (7.0 ) $ 119.6 $ 78.9 $ 66.7
Difference Between Provision for Income Taxes and U.S. Federal Statutory Rate	The provision for income taxes differs from the U.S. federal statutory rate due to the following items: Years ended December 31 2015 2014 2013 Provision at U.S. federal statutory rate 35.0 % 35.0 % 35.0 % State income and franchise taxes, net of federal benefit 2.6 2.3 2.5 International income tax rate differential - China (6.8 ) (8.2 ) (8.1 ) International income tax rate differential - other 0.2 0.4 0.7 U.S. manufacturing credit (1.3 ) (2.1 ) (1.9 ) Research tax credits (0.3 ) (0.4 ) (0.8 ) Other 0.3 0.5 0.8 29.7 % 27.5 % 28.2 %
Components of Earnings Before Income Taxes	Components of earnings before income taxes were as follows: Years ended December 31 (dollars in millions) 2015 2014 2013 U.S. $ 255.7 $ 150.6 $ 151.9 International 146.8 136.1 84.5 $ 402.5 $ 286.7 $ 236.4
Tax Effects of Temporary Differences of Assets and Liabilities	The tax effects of temporary differences of assets and liabilities between income tax and financial reporting are as follows: December 31 (dollars in millions) 2015 2014 Assets Liabilities Assets Liabilities Employee benefits $ 75.0 $ — $ 77.0 $ — Product liability and warranties 66.8 — 65.8 — Inventories — 4.4 — 4.2 Accounts receivable 13.0 — 11.7 — Property, plant and equipment — 36.9 — 39.4 Intangibles — 54.3 — 52.1 Environmental liabilities 2.7 — 3.1 — Undistributed foreign earnings — 47.9 — 50.7 Tax loss and credit carryovers 14.6 — 14.9 — All other 3.4 — 4.7 — Valuation allowance (11.0 ) — (9.8 ) — $ 164.5 $ 143.5 $ 167.4 $ 146.4 Net asset $ 21.0 $ 21.0
Balance Sheet Classification of Deferred Tax Assets and Liabilities	These deferred tax assets and liabilities are classified in the balance sheet as current or long-term based on the balance sheet classification of the related assets and liabilities as follows: December 31 (dollars in millions) 2015 2014 Current deferred income tax assets $ 39.9 $ 40.5 Long-term deferred income tax assets 2.4 1.9 Long-term deferred income tax liabilities (21.3 ) (21.4 ) Net asset $ 21.0 $ 21.0
Reconciliation of Tax Loss Carryovers, Credit Carryovers and Valuation Allowances	A reconciliation of the beginning and ending amounts of tax loss carryovers, credit carryovers and valuation allowances is as follows: December 31 (dollars in millions) Net Operating Losses and Tax Credits Valuation Allowances 2015 2014 2015 2014 Beginning balance $ 14.9 $ 17.7 $ 9.8 $ 9.6 Additions 1.4 0.6 1.4 1.0 Reductions (1.7 ) (3.4 ) (0.2 ) (0.8 ) Ending balance $ 14.6 $ 14.9 $ 11.0 $ 9.8
Reconciliation of Unrecognized Tax Benefits	A reconciliation of the beginning and ending amount of unrecognized benefits is as follows: (Dollars in millions) 2015 2014 Balance at January 1 $ 1.2 $ 1.3 Additions for tax positions of prior years 1.4 — Reductions for tax positions of prior years — (0.1 ) Balance at December 31 $ 2.6 $ 1.2

Operations by Segment (Tables)

Operations by Segment (Tables)	12 Months Ended
	Dec. 31, 2015
Schedule of Operating Earnings	Operating earnings, defined by the Company as earnings before interest, taxes, general corporate and corporate research and development expenses, were used to measure the performance of the segments. Net Sales Earnings Years ended December 31 (dollars in millions) 2015 2014 2013 2015 2014 2013 North America $ 1,703.0 $ 1,621.7 $ 1,520.0 $ 339.9 $ 238.7 $ 211.9 Rest of World 866.1 768.3 668.0 113.0 106.7 88.0 Inter-segment (32.6 ) (34.0 ) (34.2 ) — (0.1 ) — Total segments – sales, operating earnings $ 2,536.5 $ 2,356.0 $ 2,153.8 $ 452.9 $ 345.3 $ 299.9 Corporate expenses (43.0 ) (52.9 ) (57.8 ) Interest expense (7.4 ) (5.7 ) (5.7 ) Earnings before income taxes 402.5 286.7 236.4 Provision for income taxes (119.6 ) (78.9 ) (66.7 ) Earnings from continuing operations $ 282.9 $ 207.8 $ 169.7
Schedule of Assets, Depreciation And Capital Expenditure By Segment	Assets, depreciation and capital expenditures by segment Total Assets Depreciation and Capital (dollars in millions) 2015 2014 2013 2015 2014 2013 2015 2014 2013 North America $ 1,381.1 $ 1,358.5 $ 1,298.6 $ 41.9 $ 37.8 $ 40.5 $ 43.5 $ 59.4 $ 38.0 Rest of World 544.2 523.8 525.2 19.8 20.0 16.8 28.4 26.5 59.0 Corporate 721.2 633.0 567.7 1.3 2.0 2.4 0.8 0.2 0.7 Total $ 2,646.5 $ 2,515.3 $ 2,391.5 $ 63.0 $ 59.8 $ 59.7 $ 72.7 $ 86.1 $ 97.7
Schedule of Net Sales and Long-Lived Assets by Geographic Location	The following data by geographic area includes net sales based on product shipment destination and long-lived assets based on physical location. Long-lived assets include net property, plant and equipment and other long-term assets. Long-lived Assets Net Sales (dollars in millions) 2015 2014 2013 2015 2014 2013 United States $ 275.2 $ 262.1 $ 238.6 United States $ 1,531.4 $ 1,447.9 $ 1,335.4 China 145.2 131.9 134.9 China 787.1 691.8 581.0 Canada 2.7 3.6 4.7 Canada 129.9 128.8 142.5 Other Foreign 55.2 58.3 46.4 Other Foreign 88.1 87.5 94.9 Total $ 478.3 $ 455.9 $ 424.6 Total $ 2,536.5 $ 2,356.0 $ 2,153.8

Quarterly Results of Operatio40

Quarterly Results of Operations (Tables)	12 Months Ended
	Dec. 31, 2015
Schedule of Quarterly Results of Operations	(dollars in millions, except per share amounts) 1st Quarter 2nd Quarter 3rd Quarter 4th Quarter 2015 2014 2015 2014 2015 2014 2015 2014 Net sales $ 618.5 $ 552.2 $ 653.5 $ 595.4 $ 625.1 $ 581.6 $ 639.4 $ 626.8 Gross profit 229.2 195.9 262.4 216.2 255.6 215.3 262.6 231.9 Net earnings 58.4 46.7 71.1 57.3 73.6 50.6 79.8 53.2 Basic earnings per share 0.65 0.51 0.80 0.63 0.83 0.56 0.91 0.59 Diluted earnings per share 0.65 0.51 0.79 0.63 0.82 0.56 0.90 0.59 Common dividends declared 0.19 0.15 0.19 0.15 0.19 0.15 0.19 0.15

Organization and Significant 41

Organization and Significant Accounting Policies - Additional Information (Detail) $ in Millions	Apr. 15, 2013	Dec. 31, 2015USD ($)Segment	Dec. 31, 2014USD ($)	Dec. 31, 2013USD ($)
Organization And Summary Of Significant Accounting Policies [Line Items]
Number of reporting segments | Segment		2
Fair value of term notes		$ 104.4	$ 45.5
Carrying amount of term notes		$ 102	$ 43.3
Percentage of (LIFO) inventory		66.00%	63.00%
Allowance for doubtful accounts		$ 6	$ 3.7
Advertising costs charged to operations		102.2	94	$ 78
Amortization of total advertising costs		27.4	22.6	17.9
Research and development costs		73.7	67.9	57.8
Excess tax deductions recognized as financing cash flows		$ 10.4	$ 2.4	$ 4.8
Minimum percentage of amount likely to be realized upon ultimate settlement to recognize tax benefits		50.00%
Stock split ratio	2
Percentage of stock dividend to stock holders		100.00%
Dividend payable date		May 15, 2013
Dividend date of record		Apr. 30, 2013
Minimum
Organization And Summary Of Significant Accounting Policies [Line Items]
Marketable securities, Maturity period		180 days
Product warranty period		1 year
Amortization of total advertising costs, months		12 months
Minimum | Customer Relationships [Member]
Organization And Summary Of Significant Accounting Policies [Line Items]
Intangible assets estimated useful lives		10 years
Minimum | Building
Organization And Summary Of Significant Accounting Policies [Line Items]
Estimated service lives used to compute depreciation		25 years
Minimum | Equipment
Organization And Summary Of Significant Accounting Policies [Line Items]
Estimated service lives used to compute depreciation		3 years
Minimum | Software Development
Organization And Summary Of Significant Accounting Policies [Line Items]
Estimated service lives used to compute depreciation		3 years
Maximum
Organization And Summary Of Significant Accounting Policies [Line Items]
Marketable securities, Maturity period		12 months
Product warranty period		10 years
Amortization of total advertising costs, months		24 months
Maximum | Customer Relationships [Member]
Organization And Summary Of Significant Accounting Policies [Line Items]
Intangible assets estimated useful lives		25 years
Maximum | Building
Organization And Summary Of Significant Accounting Policies [Line Items]
Estimated service lives used to compute depreciation		50 years
Maximum | Equipment
Organization And Summary Of Significant Accounting Policies [Line Items]
Estimated service lives used to compute depreciation		20 years
Maximum | Software Development
Organization And Summary Of Significant Accounting Policies [Line Items]
Estimated service lives used to compute depreciation		15 years

Company's Warranty Liability Ac

Company's Warranty Liability Activity (Detail) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014
Product Warranties
Balance at beginning of year	$ 136.2	$ 136.6
Expense	62.8	62.2
Claims settled	(59.7)	(62.6)
Balance at end of year	$ 139.3	$ 136.2

Assets and Liabilities Measured

Assets and Liabilities Measured at Fair Value on Recurring Basis (Detail) - USD ($) $ in Millions	Dec. 31, 2015	Dec. 31, 2014
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets measured at fair value on recurring basis	$ 323.6	$ 223.9
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 on recurring basis	323.9	224.1
Significant Other Observable Inputs (Level 2)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Liabilities measured at fair value on recurring basis	$ (0.3)	$ (0.2)

Schedule of Computation of Basi

Schedule of Computation of Basic and Diluted Weighted-Average Shares Used in Earnings per Share Calculations (Detail) - shares	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Earnings Per Share Of Common Stock
Denominator for basic earnings per share - weighted-average shares outstanding	88,811,140	90,293,504	92,118,153
Effect of dilutive stock options, restricted stock and share units	693,450	693,477	669,517
Denominator for diluted earnings per share	89,504,590	90,986,981	92,787,670

Acquisitions - Additional Infor

Acquisitions - Additional Information (Detail) - USD ($) $ in Millions	Feb. 14, 2013	Dec. 31, 2015	Dec. 31, 2013
Business Acquisition [Line Items]
Aggregate cash purchase price, net of cash received			$ 4
Acquired intangible assets, amortization period, in years		14 years
MiM Isitma Sogutma Havalandirma ve Aritma Sistemleri San. Tic. A.S.
Business Acquisition [Line Items]
Percentage of shares acquired	100.00%
Cash received from acquisition	$ 1.9
Aggregate cash purchase price, net of cash received	4
Recorded contingent consideration	1.1
Debt assumed	1.7
Acquired intangible assets	4.3
MiM Isitma Sogutma Havalandirma ve Aritma Sistemleri San. Tic. A.S. | Customer Lists
Business Acquisition [Line Items]
Acquired intangible assets	$ 2.4
Acquired intangible assets, amortization period, in years	10 years

Restructuring, Impairment and46

Restructuring, Impairment and Settlement Income - Additional Information (Detail) - USD ($) $ in Millions	Mar. 11, 2013	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Restructuring Cost and Reserve [Line Items]
Restructuring and impairment expense				$ 22
Severance costs and impairment expense				7.5
Inventory obsolescence reserve				2.4
Impairment charges related to long-lived asset				9.2
Tax benefit related to charge				5.6
Equipment relocation costs				2.9
Recovery of costs and damages from vendors	$ 11
Settlement income	11
Income tax expense	$ 4.2	$ 119.6	$ 78.9	$ 66.7

Schedule of Supplemental Cash F

Schedule of Supplemental Cash Flow Information (Detail) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Statement Of Cash Flows
Receivables	$ (25.9)	$ (16.8)	$ (32.3)
Inventories	(14.7)	(14.9)	(28.5)
Other current assets	(4.6)	(7.7)	(7.5)
Trade payables	31	6.9	58
Accrued liabilities, including payroll and benefits	12.5	2.1	29.4
Income taxes payable	11.8	(7.7)	1.4
Increase (Decrease) in Other Current Assets and Liabilities, Net, Total	$ 10.1	$ (38.1)	$ 20.5

Schedule of Inventories (Detail

Schedule of Inventories (Detail) - USD ($) $ in Millions	Dec. 31, 2015	Dec. 31, 2014
Inventories
Finished products	$ 85.7	$ 100.2
Work in process	13.4	10.7
Raw materials	139.6	121.3
Inventories, at FIFO cost	238.7	232.2
LIFO reserve	(15.8)	(23.9)
Net inventory	$ 222.9	$ 208.3

Inventories - Additional Inform

Inventories - Additional Information (Detail) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Inventories [Line Items]
After-tax LIFO expense (income)	$ 1.1	$ (0.1)	$ 0.1

Property, Plant and Equipment50

Property, Plant and Equipment (Detail) - USD ($) $ in Millions	Dec. 31, 2015	Dec. 31, 2014
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	$ 866.8	$ 815.9
Less accumulated depreciation and amortization	424.1	388.2
Net property, plant and equipment	442.7	427.7
Land
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	10.8	11.2
Building
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	237.9	230.6
Equipment
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	530.9	504.5
Software Development
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	$ 87.2	$ 69.6

Schedule of Changes in Carrying

Schedule of Changes in Carrying Amount of Goodwill (Detail) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014
Goodwill [Line Items]
Beginning balance	$ 428.8	$ 433.5
Currency translation adjustment	(7.9)	(4.7)
Ending balance	420.9	428.8
North America
Goodwill [Line Items]
Beginning balance	368.5	372.9
Currency translation adjustment	(7.5)	(4.4)
Ending balance	361	368.5
Rest of World
Goodwill [Line Items]
Beginning balance	60.3	60.6
Currency translation adjustment	(0.4)	(0.3)
Ending balance	$ 59.9	$ 60.3

Schedule of Carrying Amount of

Schedule of Carrying Amount of Other Intangible Assets (Detail) - USD ($) $ in Millions	Dec. 31, 2015	Dec. 31, 2014
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount, Amortizable intangible assets	$ 238.2	$ 239
Gross Carrying Amount, Total intangible assets	379.4	382.7
Accumulated Amortization, Amortizable intangible assets	(88.4)	(74.2)
Net, Amortizable intangible assets	149.8	164.8
Net, Total intangible assets	291	308.5
Trade Names
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount, indefinite-lived intangible assets	141.2	143.7
Net, Indefinite-lived intangible assets	141.2	143.7
Patents
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount, Amortizable intangible assets	6.6	6.7
Accumulated Amortization, Amortizable intangible assets	(5.3)	(5)
Net, Amortizable intangible assets	1.3	1.7
Customer Lists
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount, Amortizable intangible assets	231.6	232.3
Accumulated Amortization, Amortizable intangible assets	(83.1)	(69.2)
Net, Amortizable intangible assets	$ 148.5	$ 163.1

Goodwill and Other Intangible53

Goodwill and Other Intangible Assets - Additional Information (Detail) - USD ($)	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Goodwill And Other Intangibles [Line Items]
Amortization expenses of other intangible assets	$ 14,200,000	$ 14,300,000	$ 14,400,000
Amortization of intangible assets, weighted average period, years	14 years
Annual impairment of goodwill	$ 0	0	0
Intangible asset impairment charge	0	$ 0	$ 0
Annually
Goodwill And Other Intangibles [Line Items]
Amortization expenses of other intangible assets	$ 14,300,000

Debt and Lease Commitments (Det

Debt and Lease Commitments (Detail) - USD ($) $ in Millions	Dec. 31, 2015	Dec. 31, 2014
Debt Instrument [Line Items]
Debt	$ 249	$ 223.8
Less long-term debt due within one year	12.9	13.7
Long-term debt	236.1	210.1
Revolving Credit Agreement Borrowings
Debt Instrument [Line Items]
Debt	80	130
Bank Credit Lines
Debt Instrument [Line Items]
Debt	10.2	8
Commercial Paper
Debt Instrument [Line Items]
Debt	56.8	42.5
Term Notes With Insurance Companies
Debt Instrument [Line Items]
Debt	89	22.6
Canadian Term Notes With Insurance Companies
Debt Instrument [Line Items]
Debt	$ 13	$ 20.7

Debt and Lease Commitments (Par

Debt and Lease Commitments (Parenthetical) (Detail)	Jan. 15, 2015	Dec. 31, 2015	Dec. 31, 2014
Bank Credit Lines
Debt Instrument [Line Items]
Line of credit facility, average year-end interest rate		1.30%	2.70%
Commercial Paper
Debt Instrument [Line Items]
Line of credit facility, average year-end interest rate		1.10%	1.10%
Term Notes With Insurance Companies
Debt Instrument [Line Items]
Line of credit facility, average year-end interest rate		3.90%	6.10%
Debt instrument maturity	2,030	2,030	2,030
Canadian Term Notes With Insurance Companies
Debt Instrument [Line Items]
Line of credit facility, average year-end interest rate		5.30%	5.30%
Debt instrument maturity		2,018	2,018
Revolving Credit Agreement Borrowings
Debt Instrument [Line Items]
Line of credit facility, average year-end interest rate		1.50%	1.30%

Debt and Lease Commitments - Ad

Debt and Lease Commitments - Additional Information (Detail)	Jan. 15, 2015USD ($)	Dec. 31, 2015USD ($)lender	Dec. 31, 2014USD ($)	Dec. 31, 2013USD ($)
Debt Instrument [Line Items]
Multi-currency revolving credit agreement		$ 400,000,000
Number of banks involved in multi-year multi-currency revolving credit agreement | lender		8
Revolving credit facility, expiration date		Dec. 12, 2017
Multi-currency revolving credit agreement, maximum amount		$ 500,000,000
Future minimum payments under non-cancelable operating leases due, total		39,500,000
Rent expense, including payments under operating leases		28,800,000	$ 24,300,000	$ 20,700,000
Interest paid		6,400,000	5,800,000	$ 5,900,000
Capitalized interest expense		$ 200,000	$ 400,000
Term Notes With Insurance Companies
Debt Instrument [Line Items]
Debt instrument, issued	$ 75,000,000
Debt instrument, principle repayment commencement year	2,020
Debt instrument, interest rate	3.52%
Debt instrument, maturity year	2,030	2,030	2,030

Schedule of Maturities of Long

Schedule of Maturities of Long Term Debt (Detail) $ in Millions	Dec. 31, 2015USD ($)
Debt And Lease Commitments [Abstract]
2,016	$ 12.9
2,017	154
2,018	7.1
2,019	0
2,020	$ 6.8

Schedule of Future Minimum Paym

Schedule of Future Minimum Payments Under Non-Cancelable Operating Leases (Detail) $ in Millions	Dec. 31, 2015USD ($)
Debt And Lease Commitments [Abstract]
2,016	$ 19.7
2,017	4.3
2,018	3.8
2,019	2.7
2,020	1.8
Thereafter	$ 7.2

Stockholders Equity - Additiona

Stockholders Equity - Additional Information (Detail) - USD ($) $ / shares in Units, $ in Millions	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Stockholders Equity [Line Items]
Preferred stock, shares authorized	3,000,000
Preferred stock, par value	$ 1
Common Stock, shares authorized	120,000,000
Common stock, par value	$ 1
Dividends paid	$ 0.76	$ 0.60	$ 0.46
Stock repurchase program number of shares authorized to repurchase	2,000,000	3,500,000
Stock repurchase program additional number of shares authorized			2,000,000
Shares repurchased	1,908,237	2,154,783	1,771,066
Shares repurchased, value	$ 128.1	$ 103.8	$ 73.7
Remaining authorization stock repurchase	2,589,756
Common Class A
Stockholders Equity [Line Items]
Common Stock, shares authorized	14,000,000
Common stock, par value	$ 5
Shares converted into Common Stock	135,088	272,184	85,792
Treasury stock, number of shares held	65,190	65,190
Common Stock
Stockholders Equity [Line Items]
Treasury stock, number of shares held	7,340,173	5,889,073

Schedule of Accumulated Other C

Schedule of Accumulated Other Comprehensive Loss (Detail) - USD ($) $ in Millions	Dec. 31, 2015	Dec. 31, 2014
Stockholders' Equity [Abstract]
Cumulative foreign currency translation adjustments	$ (39.4)	$ 3.3
Unrealized net gain on cash flow derivative instruments less related income tax provision of $(0.8) in 2015 and $(0.5) in 2014	1.2	0.9
Pension liability less related income tax benefit of $177.7 in 2015 and $178.2 in 2014	(275.2)	(276.2)
Accumulated other comprehensive loss	$ (313.4)	$ (272)

Schedule of Accumulated Other61

Schedule of Accumulated Other Comprehensive Loss (Parenthetical) (Detail) - USD ($) $ in Millions	Dec. 31, 2015	Dec. 31, 2014
Accumulated Other Comprehensive Income (Loss) [Line Items]
Unrealized net gain on cash flow derivative instruments, related income tax (provision) benefit	$ (0.8)	$ (0.5)
Pension liability, related income tax benefit	$ 177.7	$ 178.2

Changes in Accumulated Other Co

Changes in Accumulated Other Comprehensive Loss by Component (Detail) - USD ($) $ in Millions		12 Months Ended
		Dec. 31, 2015	Dec. 31, 2014
Accumulated Other Comprehensive Income (Loss) [Line Items]
Accumulated Other Comprehensive Income (loss) Beginning Balance		$ (272)
Realized gains on derivatives reclassified to cost of products sold (net of tax provision of $1.3 and $1.3 in 2015 and 2014, respectively)		5.7	$ 3.4
Accumulated Other Comprehensive Income (loss) Ending Balance		(313.4)	(272)
Pension liability
Accumulated Other Comprehensive Income (Loss) [Line Items]
Accumulated Other Comprehensive Income (loss) Beginning Balance		(276.2)	(280)
Other comprehensive (loss) gain before reclassifications		(9.6)	(17)
Amounts reclassified from accumulated other comprehensive loss:	[1]	10.6	20.8
Accumulated Other Comprehensive Income (loss) Ending Balance		(275.2)	(276.2)
Cumulative foreign currency translation
Accumulated Other Comprehensive Income (Loss) [Line Items]
Accumulated Other Comprehensive Income (loss) Beginning Balance		3.3	19.9
Other comprehensive (loss) gain before reclassifications		(42.7)	(16.6)
Accumulated Other Comprehensive Income (loss) Ending Balance		(39.4)	3.3
Unrealized net gain on cash flow derivatives
Accumulated Other Comprehensive Income (Loss) [Line Items]
Accumulated Other Comprehensive Income (loss) Beginning Balance		0.9	1
Other comprehensive (loss) gain before reclassifications		3.7	2
Realized gains on derivatives reclassified to cost of products sold (net of tax provision of $1.3 and $1.3 in 2015 and 2014, respectively)	[1]	(3.4)	(2.1)
Accumulated Other Comprehensive Income (loss) Ending Balance		$ 1.2	$ 0.9
[1]	Amounts reclassified from accumulated other comprehensive loss: Realized gains on derivatives reclassified to cost of products sold (5.7 ) (3.4 ) Tax provision 2.3 1.3 Reclassification net of tax $ (3.4 ) $ (2.1 ) Amortization of pension items: Actuarial losses $ 19.0 (2) $ 34.8 (2) Prior year service cost (1.4 )(2) (1.0 )(2) 17.6 33.8 Tax benefit (7.0 ) (13.0 ) Reclassification net of tax $ 10.6 $ 20.8 (2) These accumulated other comprehensive loss components are included in the computation of net periodic benefit cost. See Note 11 - Pensions and Other Post-retirement Benefits for additional details

Changes in Accumulated Other 63

Changes in Accumulated Other Comprehensive Loss by Component (Parenthetical) (Detail) - USD ($) $ in Millions		Mar. 11, 2013	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Accumulated Other Comprehensive Income (Loss) [Line Items]
Cost of products sold			$ 1,526.7	$ 1,496.7	$ 1,380
Tax provision (benefit)		$ 4.2	119.6	78.9	$ 66.7
Pension liability
Accumulated Other Comprehensive Income (Loss) [Line Items]
Reclassification net of tax	[1]		(10.6)	(20.8)
Pension liability | Reclassification out of Accumulated Other Comprehensive Income
Accumulated Other Comprehensive Income (Loss) [Line Items]
Actuarial losses	[2]		19	34.8
Prior year service cost	[2]		(1.4)	(1)
Other Comprehensive (Income) Loss, Reclassification Adjustment from AOCI, Pension and Other Postretirement Benefit Plans, before Tax			17.6	33.8
Tax provision (benefit)			(7)	(13)
Reclassification net of tax			10.6	20.8
Unrealized net gain on cash flow derivatives
Accumulated Other Comprehensive Income (Loss) [Line Items]
Realized losses on derivatives reclassified to cost of products sold, tax effect			1.3	1.3
Unrealized net gain on cash flow derivatives | Reclassification out of Accumulated Other Comprehensive Income
Accumulated Other Comprehensive Income (Loss) [Line Items]
Cost of products sold			(5.7)	(3.4)
Tax provision (benefit)			2.3	1.3
Reclassification net of tax			$ (3.4)	$ (2.1)
[1]	Amounts reclassified from accumulated other comprehensive loss: Realized gains on derivatives reclassified to cost of products sold (5.7 ) (3.4 ) Tax provision 2.3 1.3 Reclassification net of tax $ (3.4 ) $ (2.1 ) Amortization of pension items: Actuarial losses $ 19.0 (2) $ 34.8 (2) Prior year service cost (1.4 )(2) (1.0 )(2) 17.6 33.8 Tax benefit (7.0 ) (13.0 ) Reclassification net of tax $ 10.6 $ 20.8 (2) These accumulated other comprehensive loss components are included in the computation of net periodic benefit cost. See Note 11 - Pensions and Other Post-retirement Benefits for additional details
[2]	These accumulated other comprehensive loss components are included in the computation of net periodic benefit cost. See Note 11 - Pensions and Other Post-retirement Benefits for additional details

Stock Based Compensation - Addi

Stock Based Compensation - Additional Information (Detail) - USD ($) $ / shares in Units, $ in Millions	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Total stock based compensation expense recognized	$ 8.8	$ 10.8	$ 10.5
Stock option compensation recognized	4	$ 4.9	$ 4.5
Aggregate intrinsic value for the outstanding options	53.8
Aggregate intrinsic value for the exercisable options	$ 39.4
Average remaining contractual life for outstanding options, in years	8 years
Average remaining contractual life for exercisable options, in years	7 years
Weighted-average fair value per option at the date of grant	$ 17.17	$ 16.55	$ 12.57
Number of options, exercisable at end of period	772,093	932,639	740,919
Share based compensation expense attributable to share units	$ 4.8	$ 5.9	$ 6
Total compensation expense for share units not yet recognized	$ 2.4
Weighted average period over which the expense is expected to be recognized, in months	15 months
Employee Stock Option
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Award vesting period	3 years	3 years	3 years
Award expiration period	10 years	10 years	10 years
Restricted Stock And Share Units
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Award vesting period	3 years	3 years	3 years
Number of Units - Granted	76,096	110,691	144,696
Value of share units at the date of issuance	$ 4.7	$ 5.1	$ 5
Stock Appreciation Rights (SARs)
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Award vesting period	3 years
Award expiration period	10 years
Number of Options, granted	13,115
Number of options, exercisable at end of period	0
A.O. Smith Combined Compensation Plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of shares available for granting of options or share units	1,994,172

Changes in Option Awards All of

Changes in Option Awards All of Which Related to Common Stock (Detail) - USD ($) $ / shares in Units, $ in Millions	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Weighted-Avg. Per Share Exercise Price, beginning period	$ 27.50
Weighted-Avg. Per Share Exercise Price - Granted	61.53
Weighted-Avg. Per Share Exercise Price, ending period	36.05	$ 27.50
Weighted-Avg. Per Share Exercisable Price, ending period	$ 25.58
Outstanding, Beginning Balance	1,577,003	1,440,623	1,530,734
Outstanding, Ending Balance	1,326,779	1,577,003	1,440,623
Exercisable at End of Period	772,093	932,639	740,919
Minimum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Weighted-Avg. Per Share Exercise Price - Exercised	$ 9.50	$ 8.20	$ 8.20
Weighted-Avg. Per Share Exercise Price - Granted		46.47	34.92
Weighted-Avg. Per Share Exercise Price - Forfeited	22.99	34.92	22.99
Weighted-Avg. Per Share Exercise Price, ending period	9.50
Maximum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Weighted-Avg. Per Share Exercise Price - Exercised	46.47	34.92	22.99
Weighted-Avg. Per Share Exercise Price - Granted		50.67	52.93
Weighted-Avg. Per Share Exercise Price - Forfeited	61.53	$ 46.47	$ 34.92
Weighted-Avg. Per Share Exercise Price, ending period	$ 61.53
2015 - $8.20 to $34.92 per share
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Exercised	(489,104)
Aggregate Intrinsic Value, Exercised at end of Period	$ 10.2
2014 - $8.20 to $34.92 per share
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Exercised		(158,251)
Aggregate Intrinsic Value, Exercised at end of Period	2.6
2013 - $8.20 to $22.99 per share
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Exercised			(446,746)
Aggregate Intrinsic Value, Exercised at end of Period	$ 6
2015 - $46.47 to $50.67 per share
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Granted	242,495
2014 - $46.47 to $50.67 per share
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Granted		298,750
2013 - $34.92 to $52.93 per share
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Granted			361,700
2015 - $34.92 to $46.47 per share
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Forfeited	(3,615)
2014 - $34.92 to $46.47 per share
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Forfeited		(4,119)
2013 - $22.99 to $34.92 per share
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Forfeited			(5,065)

Schedule of Weighted-Average In

Schedule of Weighted-Average Information by Range of Exercise Prices for Stock Options Outstanding and Exercisable (Detail)	12 Months Ended
	Dec. 31, 2015$ / sharesshares
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Options Outstanding at December 31, 2015 | shares	1,326,779
Options Exercisable at December 31, 2015 | shares	772,093
$9.50 to $22.08
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Range of Exercise Prices, minimum	$ 9.50
Range of Exercise Prices, maximum	$ 22.08
Options Outstanding at December 31, 2015 | shares	309,701
Options Outstanding, Weighted-Average Exercise Price	$ 14.17
Weighted Average Remaining Contractual Life, in Years	5 years
Options Exercisable at December 31, 2015 | shares	309,701
Options Exercisable, Weighted-Average Exercise Price	$ 14.17
$22.99 to $34.92
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Range of Exercise Prices, minimum	22.99
Range of Exercise Prices, maximum	$ 34.92
Options Outstanding at December 31, 2015 | shares	476,795
Options Outstanding, Weighted-Average Exercise Price	$ 30.81
Weighted Average Remaining Contractual Life, in Years	8 years
Options Exercisable at December 31, 2015 | shares	362,126
Options Exercisable, Weighted-Average Exercise Price	$ 29.51
$36.27 to $52.93
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Range of Exercise Prices, minimum	36.27
Range of Exercise Prices, maximum	$ 61.53
Options Outstanding at December 31, 2015 | shares	540,283
Options Outstanding, Weighted-Average Exercise Price	$ 53.23
Weighted Average Remaining Contractual Life, in Years	9 years
Options Exercisable at December 31, 2015 | shares	100,266
Options Exercisable, Weighted-Average Exercise Price	$ 46.60

Schedule of Weighted-Average Fa

Schedule of Weighted-Average Fair Value per Option at Date of Grant (Detail)	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Stock Based Compensation [Abstract]
Expected life (years)	5 years 10 months 24 days	6 years	6 years 1 month 6 days
Risk-free interest rate	2.00%	2.70%	2.00%
Dividend yield	1.00%	1.10%	1.10%
Expected volatility	29.30%	36.60%	38.40%

Summary of Share Unit Activity

Summary of Share Unit Activity Under Plan (Detail) - Restricted Stock And Share Units - $ / shares	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of Units Issued and unvested, Beginning of Period	416,289
Number of Units - Granted	76,096	110,691	144,696
Number of Units - Vested	(161,448)
Number of Units - Forfeited/cancelled	(1,675)
Number of Units Issued and unvested, End of Period	329,262	416,289
Weighted-Average Grant Date Value, Beginning of Period	$ 33.06
Weighted-Average Grant Date Value - Granted	61.58
Weighted-Average Grant Date Value - Vested	23.47
Weighted-Average Grant Date Value - Forfeited/cancelled	45
Weighted-Average Grant Date Value, End of Period	$ 44.30	$ 33.06

Pensions and Other Post-retirem

Pensions and Other Post-retirement Benefits - Additional Information (Detail) $ in Millions	1 Months Ended	12 Months Ended
	Dec. 31, 2014USD ($)	Dec. 31, 2015USD ($)	Dec. 31, 2014USD ($)	Oct. 31, 2014Employee
Defined Benefit Plan Disclosure [Line Items]
Percentage match of the first one percent of contributions made by participating employees		100.00%
Percentage Match Of The Next Five Percent Of Contributions Made By Participating Employees		50.00%
Medical and life insurance maximum participant coverage age, in years		65 years
Number of former employees who get elected to participate in a lump sum pension benefits payment | Employee				2,700
Benefits paid	$ 50
Other comprehensive (gain) loss as a result of after tax adjustments for additional minimum pension liability		$ 1	$ 1.6
Target allocation to equity managers, minimum		45.00%
Target allocation to equity managers maximum		55.00%
Ten Year Pension Plan
Defined Benefit Plan Disclosure [Line Items]
Number of historical years for which compounded annualized returns is considered		10 years
Compounded annualized return of pension plan		6.10%
Twenty Five Year Pension Plan
Defined Benefit Plan Disclosure [Line Items]
Number of historical years for which compounded annualized returns is considered		25 years
Compounded annualized return of pension plan		9.50%
Pension Plans, Defined Benefit
Defined Benefit Plan Disclosure [Line Items]
Benefits paid		$ 60.2	116.1
Estimated net actuarial gain that will be amortized from accumulated other comprehensive loss into net periodic benefit cost		16.7
Estimated net prior service cost that will be amortized from accumulated other comprehensive loss into net periodic benefit cost		(1.1)
Post-Retirement Benefits
Defined Benefit Plan Disclosure [Line Items]
Benefits paid		0.7	$ 1.3
Estimated net actuarial gain that will be amortized from accumulated other comprehensive loss into net periodic benefit cost		0.2
Estimated net prior service cost that will be amortized from accumulated other comprehensive loss into net periodic benefit cost		$ (0.4)

Schedule of Changes in Benefit

Schedule of Changes in Benefit Obligations, Plan Assets and Funded Status of Defined Benefit Pension and Post-Retirement Benefit Plans (Detail) - USD ($) $ in Millions		1 Months Ended	12 Months Ended
		Dec. 31, 2014	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Change in projected benefit obligations (PBO)
Benefits paid		$ 50
Change in fair value of plan assets
Plan assets at beginning of year			$ 821
Plan assets at end of year		821	757.2	$ 821
Pension Plans, Defined Benefit
Defined Benefit Plan Disclosure [Line Items]
Accumulated benefit obligation (ABO) at December 31		948.4	889.4	948.4
Change in projected benefit obligations (PBO)
PBO at beginning of year			(956.7)	(937)
Service cost			(1.9)	(7.9)	$ (9)
Interest cost			(37.6)	(44.7)	(39.5)
Plan amendments			(2.5)
Actuarial gain (loss) including assumption changes			45.6	(83.2)
Benefits paid			60.2	116.1
PBO at end of year		(956.7)	(892.9)	(956.7)	(937)
Change in fair value of plan assets
Plan assets at beginning of year			823.9	822.3
Actual return on plan assets			(5.3)	110.1
Contribution by the company			0.5	7.6
Benefits paid			(60.1)	(116.1)
Plan assets at end of year		823.9	759	823.9	822.3
Funded status		(132.8)	(133.9)	(132.8)
Current liabilities		(0.5)	(1.8)	(0.5)
Non-current liabilities		(132.3)	(132.1)	(132.3)
Net pension liability at end of year	[1]	(132.8)	(133.9)	(132.8)
Net actuarial loss (gain)		463.2	461.3	463.2
Prior service cost		(6.1)	(2.6)	(6.1)
Total recognized in accumulated other comprehensive loss		457.1	458.7	457.1
Post-Retirement Benefits
Change in projected benefit obligations (PBO)
PBO at beginning of year			(10.4)	(10.9)
Service cost			(0.1)	(0.1)	(0.1)
Interest cost			(0.3)	(0.5)	(0.5)
Participant contributions			(0.2)	(0.2)
Plan amendments			3.7
Benefits paid			0.7	1.3
PBO at end of year		(10.4)	(6.6)	(10.4)	$ (10.9)
Change in fair value of plan assets
Contribution by the company			0.5	1.1
Participant contributions			0.2	0.2
Benefits paid			(0.7)	(1.3)
Funded status		(10.4)	(6.6)	(10.4)
Current liabilities		(0.8)	(0.4)	(0.8)
Non-current liabilities		(9.6)	(6.2)	(9.6)
Net pension liability at end of year		(10.4)	(6.6)	(10.4)
Net actuarial loss (gain)		(2.6)	(2.4)	(2.6)
Prior service cost			(3.3)
Total recognized in accumulated other comprehensive loss		$ (2.6)	$ (5.7)	$ (2.6)
[1]	In addition, the Company has a liability for a foreign pension plan of $0.3 million at December 31, 2015 and 2014.

Schedule of Changes in Benefi71

Schedule of Changes in Benefit Obligations, Plan Assets and Funded Status of Defined Benefit Pension and Post-Retirement Benefit Plans (Parenthetical) (Detail) - USD ($) $ in Millions	Dec. 31, 2015	Dec. 31, 2014
Foreign Pension Plans, Defined Benefit
Defined Benefit Plan Disclosure [Line Items]
Liability on foreign pension plan	$ 0.3	$ 0.3

Components of Company's Net Pen

Components of Company's Net Pension Expense (Detail) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Pension and Other Postretirement Benefits Disclosure [Line Items]
Total recognized in other comprehensive loss	$ (1)	$ (3.8)	$ (60.7)
Pension Plans, Defined Benefit
Pension and Other Postretirement Benefits Disclosure [Line Items]
Service cost	1.9	7.9	9
Interest cost	37.6	44.7	39.5
Expected return on plan assets	(57.5)	(60.3)	(61.7)
Net actuarial loss (gain)	19.1	35.1	42
Prior service cost	(1)	(1)	(0.9)
Curtailment and other one-time charges		2.2
Defined-benefit plan cost	0.1	28.6	27.9
Various U.S. defined contribution plans cost	10.8	6.1	5.4
Defined Benefit Plan And Defined Contribution Plan Periodic Benefit Cost, Total	10.9	34.7	33.3
Other changes in plan assets and projected benefit obligation recognized in other comprehensive loss Net actuarial loss (gain)	17.2	33.4	(58.7)
Amortization of net actuarial (loss) gain	(19.1)	(37.3)	(42)
Prior service cost	2.5
Amortization of prior service cost	1	1	0.9
Total recognized in other comprehensive loss	1.6	(2.9)	(99.8)
Total recognized in net periodic cost (benefit) and other comprehensive loss	1.7	25.7	(71.9)
Post-Retirement Benefits
Pension and Other Postretirement Benefits Disclosure [Line Items]
Service cost	0.1	0.1	0.1
Interest cost	0.3	0.5	0.5
Net actuarial loss (gain)	(0.1)	(0.4)	(0.3)
Prior service cost	(0.4)
Defined-benefit plan cost	(0.1)	0.2	0.3
Other changes in plan assets and projected benefit obligation recognized in other comprehensive loss Net actuarial loss (gain)			0.3
Amortization of net actuarial (loss) gain	0.1	0.3	0.3
Prior service cost	(3.7)
Amortization of prior service cost	0.4
Total recognized in other comprehensive loss	(3.2)	0.3	0.6
Total recognized in net periodic cost (benefit) and other comprehensive loss	$ (3.3)	$ 0.5	$ 0.9

Actuarial Assumptions Used to D

Actuarial Assumptions Used to Determine Benefit Obligations (Detail)	Dec. 31, 2015	Dec. 31, 2014
Pension Plans, Defined Benefit
Defined Benefit Plan Disclosure [Line Items]
Discount rate	4.40%	4.05%
Average salary increases	4.00%	4.00%
Post-Retirement Benefits
Defined Benefit Plan Disclosure [Line Items]
Discount rate	4.55%	4.00%
Average salary increases	4.00%	4.00%

Assumptions Used to Determine N

Assumptions Used to Determine Net Periodic Benefit Cost (Detail)	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Pension Plans, Defined Benefit
Defined Benefit Plan Disclosure [Line Items]
Discount rate	4.05%	4.85%	4.05%
Expected long-term return on plan assets	7.75%	7.75%	8.00%
Rate of compensation increase	4.00%	4.00%	4.00%
Post-Retirement Benefits
Defined Benefit Plan Disclosure [Line Items]
Discount rate	4.00%	4.70%	4.05%
Rate of compensation increase	4.00%	4.00%	4.00%

Health Care Cost Trend Rates (D

Health Care Cost Trend Rates (Detail)	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014
Pension And Other Post-Retirement Benefits
Health care cost trend rate assumed for next year	6.75%	7.25%
Rate to which the cost trend rate is assumed to decline (the ultimate trend rate)	5.00%	5.00%
Year that the rate reaches the ultimate trend rate	2,021	2,021

Weighted Asset Allocations by A

Weighted Asset Allocations by Asset Category (Detail)	Dec. 31, 2015	Dec. 31, 2014
Pension And Other Post-Retirement Benefits
Average Assets Allocation	100.00%	100.00%
Equity Securities
Pension And Other Post-Retirement Benefits
Average Assets Allocation	47.00%	50.00%
Debt Securities
Pension And Other Post-Retirement Benefits
Average Assets Allocation	39.00%	37.00%
Real estate
Pension And Other Post-Retirement Benefits
Average Assets Allocation	9.00%	8.00%
Private equity
Pension And Other Post-Retirement Benefits
Average Assets Allocation	5.00%	4.00%
Other
Pension And Other Post-Retirement Benefits
Average Assets Allocation		1.00%

Fair Value Measurement of Plan

Fair Value Measurement of Plan Assets (Detail) - USD ($) $ in Millions	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Defined Benefit Plan Disclosure [Line Items]
Total fair value of plan asset investments	$ 757.2	$ 821
Non-investment plan assets	1.8	2.9
Total plan assets	759	823.9
Equity Securities | Commingled Equity Funds
Defined Benefit Plan Disclosure [Line Items]
Total fair value of plan asset investments	109.6	134.7
Equity Securities | Common Stock
Defined Benefit Plan Disclosure [Line Items]
Total fair value of plan asset investments	238.6	264.4
Fixed Income Securities | Other Fixed Income Securities
Defined Benefit Plan Disclosure [Line Items]
Total fair value of plan asset investments	91.6	93.2
Fixed Income Securities | Commingled Fixed Income Funds
Defined Benefit Plan Disclosure [Line Items]
Total fair value of plan asset investments	84.1	83.8
Fixed Income Securities | US Treasury Securities
Defined Benefit Plan Disclosure [Line Items]
Total fair value of plan asset investments	114.3	122.9
Other Investments | Private equity
Defined Benefit Plan Disclosure [Line Items]
Total fair value of plan asset investments	34.3	34.8
Other Investments | Real estate funds
Defined Benefit Plan Disclosure [Line Items]
Total fair value of plan asset investments	70.9	64.1
Short-term Investments
Defined Benefit Plan Disclosure [Line Items]
Total fair value of plan asset investments	13.8	23.1
Quoted Prices In Active Markets For Identical Assets (Level 1)
Defined Benefit Plan Disclosure [Line Items]
Total fair value of plan asset investments	354.3	389.7
Quoted Prices In Active Markets For Identical Assets (Level 1) | Equity Securities | Common Stock
Defined Benefit Plan Disclosure [Line Items]
Total fair value of plan asset investments	238.6	264.4
Quoted Prices In Active Markets For Identical Assets (Level 1) | Fixed Income Securities | US Treasury Securities
Defined Benefit Plan Disclosure [Line Items]
Total fair value of plan asset investments	114.3	122.9
Quoted Prices In Active Markets For Identical Assets (Level 1) | Short-term Investments
Defined Benefit Plan Disclosure [Line Items]
Total fair value of plan asset investments	1.4	2.4
Significant Other Observable Inputs (Level 2)
Defined Benefit Plan Disclosure [Line Items]
Total fair value of plan asset investments	285.3	311.7
Significant Other Observable Inputs (Level 2) | Equity Securities | Commingled Equity Funds
Defined Benefit Plan Disclosure [Line Items]
Total fair value of plan asset investments	109.6	134.7
Significant Other Observable Inputs (Level 2) | Fixed Income Securities | Other Fixed Income Securities
Defined Benefit Plan Disclosure [Line Items]
Total fair value of plan asset investments	91.6	93.2
Significant Other Observable Inputs (Level 2) | Fixed Income Securities | Commingled Fixed Income Funds
Defined Benefit Plan Disclosure [Line Items]
Total fair value of plan asset investments	84.1	83.8
Significant Non-observable Inputs (Level 3)
Defined Benefit Plan Disclosure [Line Items]
Total fair value of plan asset investments	117.6	119.6	$ 109.2
Significant Non-observable Inputs (Level 3) | Real estate funds
Defined Benefit Plan Disclosure [Line Items]
Total fair value of plan asset investments	70.9	64.1	$ 57.2
Significant Non-observable Inputs (Level 3) | Other Investments | Private equity
Defined Benefit Plan Disclosure [Line Items]
Total fair value of plan asset investments	34.3	34.8
Significant Non-observable Inputs (Level 3) | Other Investments | Real estate funds
Defined Benefit Plan Disclosure [Line Items]
Total fair value of plan asset investments	70.9	64.1
Significant Non-observable Inputs (Level 3) | Short-term Investments
Defined Benefit Plan Disclosure [Line Items]
Total fair value of plan asset investments	$ 12.4	$ 20.7

Reconciliation of Fair Value Me

Reconciliation of Fair Value Measurements Using Significant Unobservable Inputs (Detail) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014
Defined Benefit Plan Disclosure [Line Items]
Plan assets at beginning of year	$ 821
Plan assets at end of year	757.2	$ 821
Significant Non-observable Inputs (Level 3)
Defined Benefit Plan Disclosure [Line Items]
Plan assets at beginning of year	119.6	109.2
Relating to assets still held at the reporting date	6.7	7.8
Relating to assets sold during the period	7.8	3.1
Purchases, sales and settlements	(16.5)	(0.5)
Plan assets at end of year	117.6	119.6
Real estate funds | Significant Non-observable Inputs (Level 3)
Defined Benefit Plan Disclosure [Line Items]
Plan assets at beginning of year	64.1	57.2
Relating to assets still held at the reporting date	6.8	6.2
Purchases, sales and settlements		0.7
Plan assets at end of year	70.9	64.1
Short-term Investments | Significant Non-observable Inputs (Level 3)
Defined Benefit Plan Disclosure [Line Items]
Plan assets at beginning of year	20.7	14
Purchases, sales and settlements	(8.3)	6.7
Plan assets at end of year	12.4	20.7
Other Fixed Income Securities | Significant Non-observable Inputs (Level 3)
Defined Benefit Plan Disclosure [Line Items]
Plan assets at beginning of year		0.3
Relating to assets sold during the period		(0.3)
Private equity | Significant Non-observable Inputs (Level 3)
Defined Benefit Plan Disclosure [Line Items]
Plan assets at beginning of year	34.8	37.7
Relating to assets still held at the reporting date	(0.1)	1.6
Relating to assets sold during the period	7.8	3.4
Purchases, sales and settlements	(8.2)	(7.9)
Plan assets at end of year	$ 34.3	$ 34.8

Estimated Future Payments (Deta

Estimated Future Payments (Detail) $ in Millions	Dec. 31, 2015USD ($)
Pension Plans, Defined Benefit
Defined Benefit Plan Disclosure [Line Items]
2,016	$ 61.4
2,017	60
2,018	66.7
2,019	59.7
2,020	65.5
2021 - 2025	286.2
Post-Retirement Benefits
Defined Benefit Plan Disclosure [Line Items]
2,016	0.4
2,017	0.4
2,018	0.4
2,019	0.4
2,020	0.4
2021 - 2025	$ 2.2

Schedule of Summary by Currency

Schedule of Summary by Currency of Foreign Currency Forward Contracts (Detail) - Foreign currency forward contracts - USD ($)	Dec. 31, 2015	Dec. 31, 2014
Buy
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Contractual amounts of foreign currency forward contracts	$ 34,000,000	$ 49,400,000
Buy | Euro
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Contractual amounts of foreign currency forward contracts	21,300,000	32,100,000
Buy | Mexican peso
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Contractual amounts of foreign currency forward contracts	12,700,000	17,300,000
Sell
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Contractual amounts of foreign currency forward contracts	45,800,000	92,200,000
Sell | British pound
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Contractual amounts of foreign currency forward contracts	900,000	900,000
Sell | Canadian dollar
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Contractual amounts of foreign currency forward contracts	43,200,000	90,300,000
Sell | Euro
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Contractual amounts of foreign currency forward contracts	$ 1,700,000	$ 1,000,000

Derivative Instruments - Additi

Derivative Instruments - Additional Information (Detail) - Commodity Futures Contracts lb in Millions	12 Months Ended
	Dec. 31, 2015lb
Trading Activity, Gains and Losses, Net [Line Items]
Reclassification period for effective portion of contract, in years	1 year
Copper
Trading Activity, Gains and Losses, Net [Line Items]
Commodity hedges outstanding, total weight of metals	1.7

Impact of Derivative Contracts

Impact of Derivative Contracts on Company's Financial Statements (Detail) - Designated as Hedging Instrument - USD ($) $ in Millions	Dec. 31, 2015	Dec. 31, 2014
Derivatives, Fair Value [Line Items]
Fair value of derivative instruments, total	$ 2	$ 1.4
Foreign Currency Contracts | Other Current Assets
Derivatives, Fair Value [Line Items]
Fair value of derivative instruments, assets	3.6	4.6
Foreign Currency Contracts | Accrued Liabilities
Derivatives, Fair Value [Line Items]
Fair value of derivative instruments, liabilities	(1.3)	(3)
Commodities Contracts | Accrued Liabilities
Derivatives, Fair Value [Line Items]
Fair value of derivative instruments, liabilities	$ (0.3)	$ (0.2)

Effect of Derivative Instrument

Effect of Derivative Instruments on Statement of Earnings (Detail) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014
Derivative [Line Items]
Amount of gain/(loss) recognized in other comprehensive loss on derivative (effective portion)	$ 6.2	$ 3.4
Amount of gain/(loss) reclassified from accumulated other comprehensive loss into earnings (effective portion)	5.7	3.4
Amount of gain recognized in earnings on a derivative (ineffective portion)	0	0
Foreign Currency Contracts
Derivative [Line Items]
Amount of gain/(loss) recognized in other comprehensive loss on derivative (effective portion)	6.9	3.6
Amount of gain recognized in earnings on a derivative (ineffective portion)	0	0
Foreign Currency Contracts | Cost Of Products Sold
Derivative [Line Items]
Amount of gain/(loss) reclassified from accumulated other comprehensive loss into earnings (effective portion)	6.2	3.6
Commodities Contracts
Derivative [Line Items]
Amount of gain/(loss) recognized in other comprehensive loss on derivative (effective portion)	(0.7)	(0.2)
Commodities Contracts | Cost Of Products Sold
Derivative [Line Items]
Amount of gain/(loss) reclassified from accumulated other comprehensive loss into earnings (effective portion)	(0.5)	(0.2)
Amount of gain recognized in earnings on a derivative (ineffective portion)	$ 0	$ 0

Components of Provision for Inc

Components of Provision for Income Taxes (Detail) - USD ($) $ in Millions	Mar. 11, 2013	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Income Taxes
Current, Federal		$ 82.9	$ 48.7	$ 53.9
Current, State		13.9	10.4	9.6
Current, International		23.6	22.4	19.1
Deferred, Federal		(4.2)	(5.2)	(8.4)
Deferred, State		2.2	(0.2)	(0.5)
Deferred, International		1.2	2.8	(7)
Provision for income taxes	$ 4.2	$ 119.6	$ 78.9	$ 66.7

Difference Between Provision Fo

Difference Between Provision For Income Taxes And U.S. Federal Statutory Rate (Detail)	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Income Taxes
Provision at U.S. federal statutory rate	35.00%	35.00%	35.00%
State income and franchise taxes, net of federal benefit	2.60%	2.30%	2.50%
U.S. manufacturing credit	(1.30%)	(2.10%)	(1.90%)
Research tax credits	(0.30%)	(0.40%)	(0.80%)
Other	0.30%	0.50%	0.80%
Effective Income Tax Rate Reconciliation, Percent, Total	29.70%	27.50%	28.20%
State Administration of Taxation, China
Income Taxes
International income tax rate differential	(6.80%)	(8.20%)	(8.10%)
Other
Income Taxes
International income tax rate differential	0.20%	0.40%	0.70%

Components of Earning Before In

Components of Earning Before Income Taxes (Detail) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Income Taxes
U.S.	$ 255.7	$ 150.6	$ 151.9
International	146.8	136.1	84.5
Earnings before income taxes	$ 402.5	$ 286.7	$ 236.4

Income Taxes - Additional Infor

Income Taxes - Additional Information (Detail) - USD ($)	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Income Tax Contingency [Line Items]
Total taxes paid	$ 97,500,000	$ 88,900,000	$ 70,200,000
Undistributed earnings of foreign subsidiaries	875,900,000
Undistributed foreign earnings reinvested	691,900,000
Cash and cash equivalents and marketable securities were held by foreign subsidiaries	645,200,000
Unrecognized tax benefits that would affect the effective tax rate, if recognized	500,000
Anticipated decrease in unrecognized tax benefits	$ 0
State and local | Earliest Tax Year
Income Tax Contingency [Line Items]
Income tax examinations, years under examination	2,000
State and local | Latest Tax Year
Income Tax Contingency [Line Items]
Income tax examinations, years under examination	2,015
Non-U.S. | Earliest Tax Year
Income Tax Contingency [Line Items]
Income tax examinations, years under examination	2,007
Non-U.S. | Latest Tax Year
Income Tax Contingency [Line Items]
Income tax examinations, years under examination	2,015
U.S. federal | Earliest Tax Year
Income Tax Contingency [Line Items]
Income tax examinations, years under examination	2,014
U.S. federal | Latest Tax Year
Income Tax Contingency [Line Items]
Income tax examinations, years under examination	2,015
Discontinued Operations
Income Tax Contingency [Line Items]
Additional income tax accrual	$ 47,900,000

Tax Effects of Temporary Differ

Tax Effects of Temporary Differences of Assets and Liabilities (Detail) - USD ($) $ in Millions	Dec. 31, 2015	Dec. 31, 2014
Income Taxes
Employee benefits, Assets	$ 75	$ 77
Product liability and warranties, Assets	66.8	65.8
Inventories, Assets	0	0
Accounts receivable, Assets	13	11.7
Property, plant and equipment, Assets	0	0
Intangibles, Assets	0	0
Environmental, Assets	2.7	3.1
Undistributed foreign earnings, Assets	0	0
Tax loss and credit carryovers, Assets	14.6	14.9
All other, Assets	3.4	4.7
Valuation allowance, Assets	(11)	(9.8)
Assets	164.5	167.4
Employee benefits, Liabilities	0	0
Product liability and warranties, Liabilities	0	0
Inventories, Liabilities	4.4	4.2
Accounts receivable, Liabilities	0	0
Property, plant and equipment, Liabilities	36.9	39.4
Intangibles, Liabilities	54.3	52.1
Environmental, Liabilities	0	0
Undistributed foreign earnings, Liabilities	47.9	50.7
Tax loss and credit carryovers, Liabilities	0	0
All other, Liabilities	0	0
Valuation allowance, Liabilities	0	0
All other, Liabilities	143.5	146.4
Net asset	$ 21	$ 21

Balance Sheet Classification Of

Balance Sheet Classification Of Deferred Tax Assets And Liabilities (Detail) - USD ($) $ in Millions	Dec. 31, 2015	Dec. 31, 2014
Income Taxes
Current deferred income tax assets	$ 39.9	$ 40.5
Long-term deferred income tax assets	2.4	1.9
Long-term deferred income tax liabilities	(21.3)	(21.4)
Net asset	$ 21	$ 21

Reconciliation of Tax Loss Carr

Reconciliation of Tax Loss Carryovers, Credit Carryovers and Valuation Allowances (Detail) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014
Income Taxes
Net Operating Losses and Tax Credits, Beginning balance	$ 14.9	$ 17.7
Net Operating Losses and Tax Credits, Additions	1.4	0.6
Net Operating Losses and Tax Credits, Reductions	(1.7)	(3.4)
Net Operating Losses and Tax Credits, Ending balance	14.6	14.9
Balance at Beginning of Year	9.8
Balance at End of Year	11	9.8
Valuation Allowance For Deferred Tax Assets
Income Taxes
Balance at Beginning of Year	9.8	9.6
Valuation Allowances, Additions	1.4	1
Valuation Allowances, Reductions	(0.2)	(0.8)
Balance at End of Year	$ 11	$ 9.8

Reconciliation of Unrecognized

Reconciliation of Unrecognized Tax Benefits (Detail) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014
Income Taxes
Balance at January 1	$ 1.2	$ 1.3
Additions for tax positions of prior years	1.4
Reductions for tax positions of prior years		(0.1)
Balance at December 31	$ 2.6	$ 1.2

Commitment and Contingencies -

Commitment and Contingencies - Additional Information (Detail) - USD ($)	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014
Commitments and Contingencies [Line Items]
Product liability insurance for individual losses in excess of accrual amount	$ 125,000,000	$ 125,000,000
Amounts in excess to be covered by third party insurance	$ 7,500,000	$ 7,500,000

Operations by Segment - Additio

Operations by Segment - Additional Information (Detail) $ in Millions	3 Months Ended								12 Months Ended
	Dec. 31, 2015USD ($)	Sep. 30, 2015USD ($)	Jun. 30, 2015USD ($)	Mar. 31, 2015USD ($)	Dec. 31, 2014USD ($)	Sep. 30, 2014USD ($)	Jun. 30, 2014USD ($)	Mar. 31, 2014USD ($)	Dec. 31, 2015USD ($)Segment	Dec. 31, 2014USD ($)	Dec. 31, 2013USD ($)
Segment Reporting Information [Line Items]
Number of reporting segments | Segment									2
Sales to a largest customer	$ 639.4	$ 625.1	$ 653.5	$ 618.5	$ 626.8	$ 581.6	$ 595.4	$ 552.2	$ 2,536.5	$ 2,356	$ 2,153.8
North America | Geographic Concentration Risk | Customer one
Segment Reporting Information [Line Items]
Sales to a largest customer									301.7	296.5	310.3
North America | Geographic Concentration Risk | Customer Two
Segment Reporting Information [Line Items]
Sales to a largest customer									$ 287	$ 237.2	$ 240.6
North America | Sales Revenue, Goods, Net | Geographic Concentration Risk | Customer one
Segment Reporting Information [Line Items]
Concentration Risk, Percentage									12.00%	13.00%	14.00%
North America | Sales Revenue, Goods, Net | Geographic Concentration Risk | Customer Two
Segment Reporting Information [Line Items]
Concentration Risk, Percentage									11.00%	10.00%	11.00%

Schedule of Operating Earnings

Schedule of Operating Earnings (Detail) - USD ($) $ in Millions	Mar. 11, 2013	Dec. 31, 2015	Sep. 30, 2015	Jun. 30, 2015	Mar. 31, 2015	Dec. 31, 2014	Sep. 30, 2014	Jun. 30, 2014	Mar. 31, 2014	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Segment Reporting Information [Line Items]
Net sales		$ 639.4	$ 625.1	$ 653.5	$ 618.5	$ 626.8	$ 581.6	$ 595.4	$ 552.2	$ 2,536.5	$ 2,356	$ 2,153.8
Operating earnings										452.9	345.3	299.9
Other income (expense)										10.8	5.2	3.8
Interest expense										(7.4)	(5.7)	(5.7)
Earnings before income taxes										402.5	286.7	236.4
Provision for income taxes	$ (4.2)									(119.6)	(78.9)	(66.7)
Earnings from continuing operations		$ 79.8	$ 73.6	$ 71.1	$ 58.4	$ 53.2	$ 50.6	$ 57.3	$ 46.7	282.9	207.8	169.7
Inter-segment
Segment Reporting Information [Line Items]
Net sales										(32.6)	(34)	(34.2)
Operating earnings											(0.1)
Corporate
Segment Reporting Information [Line Items]
Other income (expense)										(43)	(52.9)	(57.8)
North America | Operating Segments
Segment Reporting Information [Line Items]
Net sales										1,703	1,621.7	1,520
Operating earnings										339.9	238.7	211.9
Rest of World | Operating Segments
Segment Reporting Information [Line Items]
Net sales										866.1	768.3	668
Operating earnings										$ 113	$ 106.7	$ 88

Assets, Depreciation And Capita

Assets, Depreciation And Capital Expenditure By Segment (Detail) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Segment Reporting Information [Line Items]
Total Assets	$ 2,646.5	$ 2,515.3	$ 2,391.5
Depreciation and amortization	63	59.8	59.7
Capital expenditures	72.7	86.1	97.7
Corporate
Segment Reporting Information [Line Items]
Total Assets	721.2	633	567.7
Depreciation and amortization	1.3	2	2.4
Capital expenditures	0.8	0.2	0.7
North America
Segment Reporting Information [Line Items]
Total Assets	1,381.1	1,358.5	1,298.6
Depreciation and amortization	41.9	37.8	40.5
Capital expenditures	43.5	59.4	38
Rest of World
Segment Reporting Information [Line Items]
Total Assets	544.2	523.8	525.2
Depreciation and amortization	19.8	20	16.8
Capital expenditures	$ 28.4	$ 26.5	$ 59

Net Sales and Long-Lived Assets

Net Sales and Long-Lived Assets by Geographic Location (Detail) - USD ($) $ in Millions	3 Months Ended								12 Months Ended
	Dec. 31, 2015	Sep. 30, 2015	Jun. 30, 2015	Mar. 31, 2015	Dec. 31, 2014	Sep. 30, 2014	Jun. 30, 2014	Mar. 31, 2014	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Revenues from External Customers and Long-Lived Assets [Line Items]
Long-lived Assets	$ 478.3				$ 455.9				$ 478.3	$ 455.9	$ 424.6
Net sales	639.4	$ 625.1	$ 653.5	$ 618.5	626.8	$ 581.6	$ 595.4	$ 552.2	2,536.5	2,356	2,153.8
United States
Revenues from External Customers and Long-Lived Assets [Line Items]
Long-lived Assets	275.2				262.1				275.2	262.1	238.6
Net sales									1,531.4	1,447.9	1,335.4
China
Revenues from External Customers and Long-Lived Assets [Line Items]
Long-lived Assets	145.2				131.9				145.2	131.9	134.9
Net sales									787.1	691.8	581
Canada
Revenues from External Customers and Long-Lived Assets [Line Items]
Long-lived Assets	2.7				3.6				2.7	3.6	4.7
Net sales									129.9	128.8	142.5
Other Foreign
Revenues from External Customers and Long-Lived Assets [Line Items]
Long-lived Assets	$ 55.2				$ 58.3				55.2	58.3	46.4
Net sales									$ 88.1	$ 87.5	$ 94.9

Quarterly Financial Information

Quarterly Financial Information (Detail) - USD ($) $ / shares in Units, $ in Millions	3 Months Ended								12 Months Ended
	Dec. 31, 2015	Sep. 30, 2015	Jun. 30, 2015	Mar. 31, 2015	Dec. 31, 2014	Sep. 30, 2014	Jun. 30, 2014	Mar. 31, 2014	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Quarterly Financial Information [Line Items]
Net sales	$ 639.4	$ 625.1	$ 653.5	$ 618.5	$ 626.8	$ 581.6	$ 595.4	$ 552.2	$ 2,536.5	$ 2,356	$ 2,153.8
Gross profit	262.6	255.6	262.4	229.2	231.9	215.3	216.2	195.9	1,009.8	859.3	773.8
Net earnings	$ 79.8	$ 73.6	$ 71.1	$ 58.4	$ 53.2	$ 50.6	$ 57.3	$ 46.7	$ 282.9	$ 207.8	$ 169.7
Basic earnings per share	$ 0.91	$ 0.83	$ 0.80	$ 0.65	$ 0.59	$ 0.56	$ 0.63	$ 0.51	$ 3.19	$ 2.30	$ 1.84
Diluted earnings per share	0.90	0.82	0.79	0.65	0.59	0.56	0.63	0.51	$ 3.16	$ 2.28	$ 1.83
Common dividends declared	$ 0.19	$ 0.19	$ 0.19	$ 0.19	$ 0.15	$ 0.15	$ 0.15	$ 0.15

Schedule II - Valuation and Q98

Schedule II - Valuation and Qualifying Accounts (Detail) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Valuation Allowance For Trade And Notes Receivable
Valuation and Qualifying Accounts Disclosure [Line Items]
Balance at Beginning of Year	$ 3.7	$ 2.8	$ 4.2
Charged to Costs and Expenses	2.6	1.4	0.2
Deductions	(0.3)	(0.5)	(1.6)
Balance at End of Year	6	3.7	2.8
Valuation Allowance For Deferred Tax Assets
Valuation and Qualifying Accounts Disclosure [Line Items]
Balance at Beginning of Year	9.8	9.6	7.4
Charged to Costs and Expenses	1.4	1	2.2
Deductions	(0.2)	(0.8)
Balance at End of Year	$ 11	$ 9.8	$ 9.6