NewMarket (NEU) 10-K 19 Feb 14 2013 FY Annual report Financial data

Document_And_Entity_Informatio

Document And Entity Information (USD $)	12 Months Ended
	Dec. 31, 2013	Jan. 31, 2014	Jun. 28, 2013
Document And Entity Information [Abstract]	'	'	'
Document Type	'10-K	'	'
Amendment Flag	'false	'	'
Document Period End Date	31-Dec-13	'	'
Document Fiscal Year Focus	'2013	'	'
Document Fiscal Period Focus	'FY	'	'
Entity Registrant Name	'NEWMARKET CORP	'	'
Entity Central Index Key	'0001282637	'	'
Current Fiscal Year End Date	'--12-31	'	'
Entity Filer Category	'Large Accelerated Filer	'	'
Entity Common Stock, Shares Outstanding	'	13,004,241	'
Entity Well-known Seasoned Issuer	'Yes	'	'
Entity Voluntary Filers	'No	'	'
Entity Current Reporting Status	'Yes	'	'
Entity Public Float	'	'	$2,626,274,517

Consolidated_Statements_Of_Inc

Consolidated Statements Of Income (USD $)	12 Months Ended
In Thousands, except Per Share data, unless otherwise specified	Dec. 31, 2013		Dec. 31, 2012		Dec. 31, 2011
Income Statement [Abstract]	'		'		'
Net sales	$2,280,355	[1]	$2,211,878	[1]	$2,138,127	[1]
Cost of goods sold	1,627,059		1,581,393		1,586,145
Gross profit	653,296		630,485		551,982
Selling, general, and administrative expenses	164,878		154,207		151,599
Research, development, and testing expenses	136,573		117,845		105,496
Gain on legal settlement, net	0	[2]	0	[2]	38,656	[2]
Operating (loss) profit	351,845		358,433		333,543
Interest and financing expenses, net	17,796		8,435		14,151
Loss on early extinguishment of debt	0	[3]	9,092	[3]	0	[3]
Other income (expense), net	7,262		-3,338		-18,048
Income from continuing operations before income tax expense	341,311		337,568		301,344
Income tax expense	98,964		100,296		95,887
Income from continuing operations	242,347		237,272		205,457
Discontinued operations:	'		'		'
Gain on sale of discontinued business, net of tax	21,855		0		0
Income from operations of discontinued business, net of tax	540		2,321		1,450
Net income	$264,742		$239,593		$206,907
Basic earnings per share:	'		'		'
Income from continuing operations (in dollars per share)	$18.21		$17.68		$14.99
Income from discontinued operations (in dollars per share)	$1.69		$0.17		$0.11
Net income (in dollars per share)	$19.90		$17.85		$15.10
Diluted earnings per share:	'		'		'
Income from continuing operations (in dollars per share)	$18.21		$17.68		$14.98
Income from discontinued operations (in dollars per share)	$1.69		$0.17		$0.11
Net income (in dollars per share)	$19.90		$17.85		$15.09
[1]	Net sales to one customer of our petroleum additives segment exceeded 10% of consolidated revenue in 2013, 2012, and 2011. Sales to Shell amounted to $253 million (11% of consolidated revenue) in 2013, $252 million (11% of consolidated revenue) in 2012, and $246 million (11% of consolidated revenue) in 2011. These sales represent a wide range of products sold to this customer in multiple regions of the world.
[2]	For 2011, the petroleum additives segment included a net gain of $39 million related to a legal settlement. On September 13, 2011, we signed a settlement agreement with Innospec Inc. and its subsidiaries, Alcor Chemie Vertriebs GmbH and Innospec Ltd. (collectively, Innospec) which provided for mutual releases of the parties and dismissal of the actions with prejudice. Under the settlement agreement, Innospec agreed to pay NewMarket an aggregate amount of approximately $45 million in a combination of cash, a promissory note, and stock, of which $25 million was paid in cash on September 20, 2011 and $5 million was paid in the form of 195,313 shares of unregistered Innospec Inc. common stock. Fifteen million dollars is payable in three equal annual installments of $5 million under the promissory note, which bears simple interest at 1% per year. The first two installments were paid in September 2012 and September 2013. The gain is net of expenses related to the settlement of the lawsuit.
[3]	In March 2012, we entered into a $650 million five-year unsecured revolving credit facility. During 2012, we used a portion of the $650 million revolving credit facility to fund the early redemption of all of our then outstanding 7.125% senior notes, as well as to repay the outstanding principal amount on the mortgage loan. As a result, we recognized a loss on early extinguishment of debt of $10 million during 2012 from accelerated amortization of financing fees associated with the prior revolving credit facility, the 7.125% senior notes, and the mortgage loan, as well as costs associated with redeeming the 7.125% senior notes prior to maturity.

Consolidated_Statements_Of_Com

Consolidated Statements Of Comprehensive Income (USD $)	12 Months Ended
In Thousands, unless otherwise specified	Dec. 31, 2013		Dec. 31, 2012		Dec. 31, 2011
Statement of Comprehensive Income [Abstract]	'		'		'
Net income	$264,742		$239,593		$206,907
Pension plans and other postretirement benefits:	'		'		'
Prior service (cost) credit arising during the period, net of income tax (benefit) expense of $(367) in 2013 and $(471) in 2012	-605		-1,570		0
Amortization of prior service cost (credit) included in net periodic benefit cost, net of income tax expense (benefit) of $65 in 2013, $48 in 2012, and $138 in 2011	97	[1]	27	[1]	260	[1]
Actuarial net gain (loss) arising during the period, net of income tax expense (benefit) of $29,083 in 2013, $(13,290) in 2012, and $(17,052) in 2011	45,932		-22,721		-27,577
Amortization of actuarial net (gain) loss included in net periodic benefit cost, net of income tax (benefit) expense of $3,127 in 2013, $2,331 in 2012, and $1,322 in 2011	5,404	[1]	4,066	[1]	2,423	[1]
Settlements and curtailments, net of income tax (benefit) expense of $272 in 2013 and $145 in 2012	785	[1]	436	[1]	0	[1]
Amortization of transition obligation (asset) included in net periodic benefit cost, net of income tax expense (benefit) of $11 in 2013, $14 in 2012, and $13 in 2011	33	[1]	39	[1]	40	[1]
Total pension plans and other postretirement benefits	51,646		-19,723		-24,854
Derivative instruments:	'		'		'
Unrealized gain (loss) on derivative instruments, net of income tax expense (benefit) of $(210) in 2012, and $(1,022) in 2011	0		-330		-1,605
Reclassification adjustments for (gains) losses on derivative instruments included in net income, net of income tax (benefit) expense of $2,622 in 2013, $569 in 2012, and $649 in 2011	4,173		893		1,020
Total derivative instruments	4,173		563		-585
Foreign currency translation adjustments, net of income tax (benefit) expense of $(2,919) in 2013, $(1,007) in 2012, and $(558) in 2011	-5,216		7,567		163
Marketable securities:	'		'		'
Unrealized gain (loss) on marketable securities, net of income tax expense (benefit) of $419 in 2012 and $226 in 2011	0		676		364
Reclassification adjustment for (gain) loss on marketable securities included in net income, net of income tax (benefit) expense of $(645) in 2012	0		-1,040		0
Total marketable securities	0		-364		364
Other comprehensive income (loss)	50,603		-11,957		-24,912
Comprehensive income	$315,345		$227,636		$181,995
[1]	These components of accumulated other comprehensive loss are included in the computation of net periodic benefit cost. See Note 18 for further information.

Consolidated_Statements_Of_Com1

Consolidated Statements Of Comprehensive Income (Parenthetical) (USD $)	12 Months Ended
In Thousands, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Statement of Comprehensive Income [Abstract]	'	'	'
Prior service (cost) credit arising during the period, income tax (benefit) expense	($367)	($471)	'
Amortization of prior service cost (credit) included in net periodic benefit cost, income tax expense (benefit)	65	48	138
Actuarial net gain (loss) arising during the period, income tax expense (benefit)	29,083	-13,290	-17,052
Amortization of actuarial net (gain) loss included in net periodic benefit cost, income tax (benefit) expense	3,127	2,331	1,322
Settlements and curtailments, income tax (benefit) expense	272	145	'
Amortization of transition obligation (asset) included in net periodic benefit cost, income tax expense (benefit)	11	14	13
Unrealized gain (loss) on derivative instruments, income tax expense (benefit)	'	-210	-1,022
Reclassification adjustments for (gains) losses on derivative instruments included in net income, income tax (benefit) expense	2,622	569	649
Foreign currency translation adjustments, income tax (benefit) expense	-2,919	-1,007	-558
Unrealized gain (loss) on marketable securities, income tax expense (benefit)	'	419	226
Reclassification adjustments for (gain) loss on marketable securities included in net income, income tax (benefit) expense	'	($645)	'

Consolidated_Balance_Sheets

Consolidated Balance Sheets (USD $)	Dec. 31, 2013	Dec. 31, 2012
In Thousands, unless otherwise specified
Current assets:	'	'
Cash and cash equivalents	$238,703	$89,129
Trade and other accounts receivable, net	309,847	297,055
Inventories	307,518	322,674
Deferred income taxes	8,267	8,452
Prepaid expenses and other current assets	32,984	18,185
Total current assets	897,319	735,495
Property, plant, and equipment, at cost	985,196	1,070,967
Less accumulated depreciation and amortization	700,160	712,596
Net property, plant, and equipment	285,036	358,371
Prepaid pension cost	55,087	12,710
Deferred income taxes	22,961	55,123
Intangibles (net of amortization) and goodwill	23,319	30,542
Deferred charges and other assets	43,552	72,007
Total assets	1,327,274	1,264,248
Current liabilities:	'	'
Accounts payable	134,132	119,298
Accrued expenses	77,992	79,061
Dividends payable	12,996	0
Income taxes payable	11,419	10,024
Other current liabilities	11,075	8,288
Total current liabilities	247,614	216,671
Long-term debt	349,467	424,407
Other noncurrent liabilities	157,745	220,965
Total liabilities	754,826	862,043
Commitments and contingencies	'	'
Shareholders’ equity:	'	'
Common stock and paid-in capital (without par value; authorized shares - 80,000,000; issued and outstanding - 13,099,356 at December 31, 2013 and 13,417,877 at December 31, 2012)	0	721
Accumulated other comprehensive loss	-60,086	-110,689
Retained earnings	632,534	512,173
Total shareholders' equity	572,448	402,205
Total liabilities and shareholders' equity	$1,327,274	$1,264,248

Consolidated_Balance_Sheets_Pa

Consolidated Balance Sheets (Parenthetical) (USD $)	Dec. 31, 2013	Dec. 31, 2012
Statement of Financial Position [Abstract]	'	'
Common stock, no par value	'	'
Common stock, authorized shares	80,000,000	80,000,000
Common stock, issued shares	13,099,356	13,417,877
Common stock, outstanding shares	13,099,356	13,417,877

Consolidated_Statements_Of_Sha

Consolidated Statements Of Shareholders' Equity (USD $)	Total	Common Stock and Paid-in Capital [Member]	Accumulated Other Comprehensive Loss [Member]	Retained Earnings [Member]	Ordinary Cash Dividends [Member]	Ordinary Cash Dividends [Member]	Special Cash Dividend [Member]	Special Cash Dividend [Member]
In Thousands, except Share data, unless otherwise specified						Retained Earnings [Member]		Retained Earnings [Member]
Balance at Dec. 31, 2010	$491,640	$0	($73,820)	$565,460	'	'	'	'
Balance (in shares) at Dec. 31, 2010	'	14,034,884	'	'	'	'	'	'
Increase (Decrease) in Stockholders' Equity [Roll Forward]	'	'	'	'	'	'	'	'
Net income	206,907	'	'	206,907	'	'	'	'
Other comprehensive income (loss)	-24,912	'	-24,912	'	'	'	'	'
Cash dividends	'	'	'	'	-32,588	-32,588	'	'
Repurchases of common stock (in shares)	'	-659,373	'	'	'	'	'	'
Repurchases of common stock	-94,755	-3,237	'	-91,518	'	'	'	'
Stock options exercised (in shares)	'	16,000	'	'	'	'	'	'
Stock options exercised	70	70	'	'	'	'	'	'
Stock option tax benefit	1,102	1,102	'	'	'	'	'	'
Stock-based compensation (in shares)	'	13,320	'	'	'	'	'	'
Stock-based compensation	2,129	2,129	'	'	'	'	'	'
Balance at Dec. 31, 2011	549,593	64	-98,732	648,261	'	'	'	'
Balance (in shares) at Dec. 31, 2011	'	13,404,831	'	'	'	'	'	'
Increase (Decrease) in Stockholders' Equity [Roll Forward]	'	'	'	'	'	'	'	'
Net income	239,593	'	'	239,593	'	'	'	'
Other comprehensive income (loss)	-11,957	'	-11,957	'	'	'	'	'
Cash dividends	'	'	'	'	-40,234	-40,234	-335,447	-335,447
Stock-based compensation (in shares)	'	13,046	'	'	'	'	'	'
Stock-based compensation	657	657	'	'	'	'	'	'
Balance at Dec. 31, 2012	402,205	721	-110,689	512,173	'	'	'	'
Balance (in shares) at Dec. 31, 2012	13,417,877	13,417,877	'	'	'	'	'	'
Increase (Decrease) in Stockholders' Equity [Roll Forward]	'	'	'	'	'	'	'	'
Net income	264,742	'	'	264,742	'	'	'	'
Other comprehensive income (loss)	50,603	'	50,603	'	'	'	'	'
Cash dividends	'	'	'	'	-50,357	-50,357	'	'
Repurchases of common stock (in shares)	'	-327,600	'	'	'	'	'	'
Repurchases of common stock	-96,037	-2,013	'	-94,024	'	'	'	'
Stock-based compensation (in shares)	'	9,079	'	'	'	'	'	'
Stock-based compensation	1,292	1,292	'	'	'	'	'	'
Balance at Dec. 31, 2013	$572,448	$0	($60,086)	$632,534	'	'	'	'
Balance (in shares) at Dec. 31, 2013	13,099,356	13,099,356	'	'	'	'	'	'

Consolidated_Statements_Of_Sha1

Consolidated Statements Of Shareholders' Equity (Parenthetical) (USD $)	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Special Cash Dividend [Member]	'	'	'
Cash dividends (in dollars per share)	'	$25	'
Ordinary Cash Dividends [Member]	'	'	'
Cash dividends (in dollars per share)	$3.80	$3	$2.39

Consolidated_Statements_Of_Cas

Consolidated Statements Of Cash Flows (USD $)	12 Months Ended
In Thousands, unless otherwise specified	Dec. 31, 2013		Dec. 31, 2012		Dec. 31, 2011
Statement of Cash Flows [Abstract]	'		'		'
Cash and cash equivalents at beginning of year	$89,129		$50,370		$49,192
Cash flows from operating activities:	'		'		'
Net income	264,742		239,593		206,907
Adjustments to reconcile net income to cash flows from operating activities:	'		'		'
Depreciation and amortization	46,144		43,389		43,352
Noncash pension benefits expense	19,407		15,244		13,719
Noncash postretirement benefits expense	3,676		3,611		2,780
Deferred income tax expense (benefit)	1,026		-1,976		2,375
Gain on sale of discontinued business	-35,770		0		0
Loss on early extinguishment of debt	0		9,932		0
Gain on legal settlement, net	0	[1]	0	[1]	-38,656	[1]
Unrealized (gain) loss on derivative instruments, net	-11,550		663		12,642
Change in assets and liabilities:	'		'		'
Trade and other accounts receivable, net	-8,606		-15,027		-16,225
Inventories	3,133		-12,945		-33,154
Prepaid expenses	-1,897		5,641		-13,721
Accounts payable and accrued expenses	5,834		11,369		1,976
Income taxes payable	1,347		-3,281		-887
Cash pension benefits contributions	-30,743		-30,586		-29,447
Cash postretirement benefits contributions	-1,740		-1,845		-1,929
Proceeds from legal settlements	5,100		5,050		25,000
Other, net	17,831		3,979		9,866
Cash provided from (used in) operating activities	277,934		272,811		184,598
Cash flows from investing activities:	'		'		'
Capital expenditures	-58,476		-38,753		-53,515
Proceeds from sale of discontinued business	140,011		0		0
Deposits for interest rate swap	-12,514		-22,913		-46,467
Return of deposits for interest rate swap	24,370		21,260		33,600
Other, net	-4,927		1,620		-4,574
Cash provided from (used in) investing activities	88,464		-38,786		-70,956
Cash flows from financing activities:	'		'		'
Net (repayments) borrowings under revolving credit facility	-75,000		53,000		18,000
Issuance of 4.10% senior notes	0		349,405		0
Repayment of 7.125% senior notes	0		-150,000		0
Repayment of Foundry Park I mortgage loan	0		-63,544		-2,731
Net (repayments) borrowings under lines of credit	-1,135		-3,641		6,529
Dividends paid	-50,368		-375,681		-32,588
Debt issuance costs	-1,145		-6,485		-3,233
Repurchases of common stock	-92,195		0		-98,093
Other, net	0		0		1,028
Cash provided from (used in) financing activities	-219,843		-196,946		-111,088
Effect of foreign exchange on cash and cash equivalents	3,019		1,680		-1,376
(Decrease) increase in cash and cash equivalents	149,574		38,759		1,178
Cash and cash equivalents at end of year	$238,703		$89,129		$50,370
[1]	For 2011, the petroleum additives segment included a net gain of $39 million related to a legal settlement. On September 13, 2011, we signed a settlement agreement with Innospec Inc. and its subsidiaries, Alcor Chemie Vertriebs GmbH and Innospec Ltd. (collectively, Innospec) which provided for mutual releases of the parties and dismissal of the actions with prejudice. Under the settlement agreement, Innospec agreed to pay NewMarket an aggregate amount of approximately $45 million in a combination of cash, a promissory note, and stock, of which $25 million was paid in cash on September 20, 2011 and $5 million was paid in the form of 195,313 shares of unregistered Innospec Inc. common stock. Fifteen million dollars is payable in three equal annual installments of $5 million under the promissory note, which bears simple interest at 1% per year. The first two installments were paid in September 2012 and September 2013. The gain is net of expenses related to the settlement of the lawsuit.

Summary_of_Significant_Account

Summary of Significant Accounting Policies	12 Months Ended
	Dec. 31, 2013
Accounting Policies [Abstract]	'
Summary of Significant Accounting Policies	'
	Summary of Significant Accounting Policies
	Consolidation—Our consolidated financial statements include the accounts of NewMarket Corporation and its subsidiaries. All intercompany transactions are eliminated upon consolidation. References to "we," "us," "our," and "NewMarket" are to NewMarket Corporation and its consolidated subsidiaries, unless the context indicates otherwise.
	NewMarket is the parent company of three operating companies, each managing its own assets and liabilities. Those companies are Afton, which focuses on petroleum additive products; Ethyl, representing certain manufacturing operations and the TEL business; and NewMarket Development, which manages the property and improvements that we own in Richmond, Virginia. NewMarket is also the parent company of NewMarket Services, which provides various administrative services to NewMarket, Afton, Ethyl, and NewMarket Development.
	Certain reclassifications have been made to the accompanying consolidated financial statements and the related notes to conform to the current presentation.
	Foreign Currency Translation—We translate the balance sheets of our foreign subsidiaries into U.S. Dollars based on the current exchange rate at the end of each period. We translate the statements of income using the weighted-average exchange rates for the period. NewMarket includes translation adjustments in the Consolidated Balance Sheets as part of accumulated other comprehensive loss and transaction adjustments in the Consolidated Statements of Income as part of cost of goods sold.
	Revenue Recognition—Our policy is to recognize revenue from the sale of products when title and risk of loss have transferred to the buyer, the price is fixed and determinable, and collectability is reasonably assured. Revenues are reported at the gross amount billed, including amounts related to shipping that are charged to the customer. Provisions for rebates to customers are recorded in the same period that the related sales are recorded. Freight costs incurred on the delivery of product are included in the Consolidated Statements of Income in cost of goods sold. Our standard terms of delivery are included in our contracts, sales order confirmation documents, and invoices. Taxes assessed by a governmental authority and concurrent with sales to our customers, including sales, use, value-added, and revenue-related excises taxes, are not included as revenue, but are reflected in accrued expenses until remitted to the appropriate governmental authority.
	We recognized rental revenue on a straight-line basis over the lease term. The cumulative difference between lease revenue recognized under this method and the contractual lease payment terms was recorded in deferred charges and other assets on our Consolidated Balance Sheets. Rental revenue is reflected as a component of income from operations of discontinued business, net of tax.
	Cash and Cash Equivalents—Our cash equivalents consist of government obligations and commercial paper with original maturities of 90 days or less. Throughout the year, we have cash balances in excess of federally insured amounts on deposit with various financial institutions. We state cash and cash equivalents at cost, which approximates fair value.
	Accounts Receivable—We record our accounts receivable at net realizable value. We maintain an allowance for doubtful accounts for estimated losses resulting from our customers not making required payments. We determine the adequacy of the allowance by periodically evaluating each customer’s receivable balance, considering our customers’ financial condition and credit history, and considering current economic conditions. The allowance for doubtful accounts was not material at December 31, 2013 or December 31, 2012.
	Inventories—NewMarket values its U.S. petroleum additives and TEL inventories at the lower of cost or market, with cost determined on the last-in, first-out (LIFO) basis. In all other countries, we use the weighted-average method. Inventory cost includes raw materials, direct labor, and manufacturing overhead.
	Property, Plant, and Equipment—We state property, plant, and equipment at cost and compute depreciation by the straight-line method based on the estimated useful lives of the assets. We capitalize expenditures for significant improvements that extend the useful life of the related property. We expense repairs and maintenance, including plant turnaround costs, as incurred. When property is sold or retired, we remove the cost and accumulated depreciation from the accounts and any related gain or loss is included in earnings.
	Our policy on capital leases is to record the asset at the lower of fair value at lease inception or the present value of the total minimum lease payments. We compute amortization by the straight-line method over the lesser of the estimated economic life of the asset or the term of the lease.
	Real Estate Development and Construction Costs—We capitalize in property, plant, and equipment the costs associated with real estate development projects, including the cost of land, as well as development and construction costs. We also capitalize interest costs associated with the project. Upon completion of the project, the accumulated depreciable costs are recognized in the Consolidated Statements of Income over the estimated useful life of the asset.
	Intangibles (Net of Amortization) and Goodwill—Identifiable intangibles include the cost of acquired contracts, formulas and technology, trademarks and trade names, and customer bases. We assign a value to identifiable intangibles based on independent third-party appraisals and management's assessment at the time of acquisition. NewMarket amortizes the cost of the customer bases by an accelerated method and the cost of the remaining identifiable intangibles by the straight-line method over the estimated economic life of the intangible.
	Goodwill arises from the excess of cost over net assets of businesses acquired. Goodwill represents the residual purchase price after allocation to all identifiable net assets. We test goodwill for impairment each year and whenever a significant event or circumstance occurs which could reduce the fair value of the reporting unit to which the goodwill applies below the carrying amount of the reporting unit.
	Impairment of Long-Lived Assets—When significant events or circumstances occur that might impair the value of long-lived assets, we evaluate recoverability of the recorded cost of these assets. Assets are considered to be impaired if their carrying amount is not recoverable from the estimated undiscounted future cash flows associated with the assets. If we determine an asset is impaired and its recorded cost is higher than estimated fair market value based on the estimated present value of future cash flows, we adjust the asset to estimated fair market value.
	Asset Retirement Obligations—Asset retirement obligations, including costs associated with the retirement of tangible long-lived assets, are recorded at the fair value of the liability for an asset retirement obligation when incurred instead of ratably over the life of the asset. The asset retirement costs must be capitalized as part of the carrying amount of the long-lived asset. If the liability is settled for an amount other than the recorded balance, we recognize either a gain or loss at settlement. Asset retirement obligations are not material to our financial position, results of operations, or cash flows for the periods presented in these financial statements.
	Environmental Costs—NewMarket capitalizes environmental compliance costs if they extend the useful life of the related property or prevent future contamination. Environmental compliance costs also include maintenance and operation of pollution prevention and control facilities. We expense these compliance costs in cost of goods sold as incurred.
	Accrued environmental remediation and monitoring costs relate to an existing condition caused by past operations. NewMarket accrues these costs in current operations within cost of goods sold in the Consolidated Statements of Income when it is probable that we have incurred a liability and the amount can be reasonably estimated. These estimates are based on an assessment of the site, available clean-up methods, and prior experience in handling remediation.
	When we can reliably determine the amount and timing of future cash flows, we discount these liabilities, incorporating an inflation factor.
	Legal Costs—We expense legal costs in the period incurred.
	Employee Savings Plan—Most of our full-time salaried and hourly employees may participate in defined contribution savings plans. Employees who are covered by collective bargaining agreements may also participate in a savings plan according to the terms of their bargaining agreements. Employees, as well as NewMarket, contribute to the plans. We made contributions of $5 million in 2013, $5 million in 2012, and $4 million in 2011 related to these plans.
	Research, Development, and Testing Expenses—NewMarket expenses all research, development, and testing costs as incurred. Of the total research, development, and testing expenses, those related to new products and processes were $59 million in 2013, $55 million in 2012, and $51 million in 2011.
	Income Taxes—We recognize deferred income taxes for temporary differences between the financial reporting basis and the income tax basis of assets and liabilities. We also adjust for changes in tax rates and laws at the time the changes are enacted. A valuation allowance is recorded when it is more likely than not that a deferred tax asset will not be realized. We recognize accrued interest and penalties associated with uncertain tax positions as part of income tax expense on our Consolidated Statements of Income.
	We generally provide for additional U.S. taxes that would be incurred if a foreign subsidiary returns its earnings in cash to the United States. Undistributed earnings of certain foreign subsidiaries for which U.S. taxes have not been provided totaled approximately $301 million at December 31, 2013, $239 million at December 31, 2012, and $177 million at December 31, 2011. Deferred income taxes have not been provided on these earnings since we expect them to be indefinitely reinvested abroad. Accordingly, no provision has been made for taxes that may be payable on the remittance of these earnings. The determination of the amount of such unrecognized deferred tax liability is not practicable.
	Derivative Financial Instruments and Hedging Activities—We record all derivatives on the balance sheet at fair value. The accounting for changes in the fair value of derivatives depends on the intended use of the derivative, whether we have elected to designate a derivative in a hedging relationship and apply hedge accounting, and whether the hedging relationship has satisfied the criteria necessary to apply hedge accounting. We may enter into derivative contracts that are intended to economically hedge certain of our risks, even though hedge accounting does not apply or we elect not to apply hedge accounting. We do not enter into derivative instruments for speculative purposes.
	Derivatives designated and qualifying as a hedge of the exposure to changes in the fair value of an asset, liability, or firm commitment attributable to a particular risk are considered fair value hedges. Derivatives designated and qualifying as a hedge of the exposure to variability in expected future cash flows, or other types of forecasted transactions, are considered cash flow hedges. Derivatives may also be designated as hedges of the foreign currency exposure of a net investment in a foreign operation.
	Stock-based Compensation—The value of stock awards is measured based on the closing price of our common stock on the date of grant, adjusted for provisions specific to a particular award. We recognize stock-based compensation expense on a straight-line basis over the requisite service period.
	Investments—We classify current marketable securities as “available for sale” and record them at fair value with the unrealized gains or losses, net of tax, included as a component of shareholders’ equity in accumulated other comprehensive loss. The fair value is determined based on quoted market prices.
	When a decline in the fair value of a marketable security is considered other than temporary, we write down the investment to estimated fair market value with a corresponding charge to earnings.
	Estimates and Risks Due to Concentration of Business—The preparation of financial statements in conformity with accounting principles generally accepted in the United States of America requires management to make estimates and assumptions that affect the amounts reported in the financial statements and accompanying notes. Actual results could differ from those estimates.
	In addition, our financial results can be influenced by certain risk factors. Some of our significant concentrations of risk include the following:
	•	reliance on a small number of significant customers;
	•	customers concentrated in the fuel and lubricant industries; and
	•	production of several of our products solely at one facility.

Discontinued_Operations

Discontinued Operations	12 Months Ended
	Dec. 31, 2013
Discontinued Operations and Disposal Groups [Abstract]	'
Discontinued Operations	'
	Discontinued Operations
	On July 2, 2013, Foundry Park I completed the sale of its real estate assets for $144 million in cash, which comprised our entire real estate development segment. The operations of the real estate development segment for all periods presented are reported in income from operations of discontinued business, net of tax in the Consolidated Statements of Income. We recognized a gain of $36 million ($22 million after tax) in 2013 related to this transaction.
	The components of income from operations of discontinued business, net of tax were as follows:
		Years Ended December 31,
	(in thousands)	2013		2012		2011
	Rental revenue	$	5,747	$	11,431	$	11,431
	Cost of rental	2,136		4,386		4,386
	Interest, financing, and other expenses, net	2,728		2,382		4,672
	Loss on early extinguishment of debt	0		840		0
	Income before income tax expense	883		3,823		2,373
	Income tax expense	343		1,502		923
	Income from operations of discontinued business, net of tax	$	540	$	2,321	$	1,450
	Interest, financing, and other expenses, net include only amounts directly related to the Foundry Park I mortgage loan and related interest rate swap. See Note 15 for further information. Other interest and financing expenses have not been allocated to discontinued operations. The Consolidated Statements of Cash Flows summarize the activity of discontinued operations and continuing operations together.

Earnings_Per_Share

Earnings Per Share	12 Months Ended
	Dec. 31, 2013
Earnings Per Share [Abstract]	'
Earnings Per Share	'
	Earnings Per Share
	For the years ended December 31, 2013 and December 31, 2012, we had 20,270 shares and 11,940 shares, respectively, of nonvested restricted stock that were excluded from the calculation of diluted earnings per share as their effect on earnings per share would be anti-dilutive. We had no anti-dilutive options or stock-based compensation awards that were excluded from the calculation of diluted earnings per share for 2011.
	The nonvested restricted stock is considered a participating security since the stock contains nonforfeitable rights to dividends. As such, we use the two-class method to compute basic and diluted earnings per share. The following table illustrates the earnings allocation method utilized in the calculation of basic and diluted earnings per share from continuing operations.
		Years Ended December 31,
	(in thousands, except per-share amounts)	2013		2012		2011
	Earnings per share from continuing operations numerator:
	Income from continuing operations attributable to common shareholders before allocation of earnings to participating securities	$	242,347	$	237,272	$	205,457
	Income from continuing operations allocated to participating securities	339		316		0
	Income from continuing operations attributable to common shareholders after allocation of earnings to participating securities	$	242,008	$	236,956	$	205,457
	Earnings per share from continuing operations denominator:
	Weighted-average number of shares of common stock outstanding	13,286		13,405		13,707
	Dilutive effect of unexercised stock options	0		0		5
	Total shares	13,286		13,405		13,712
	Basic earnings per share from continuing operations	$	18.21	$	17.68	$	14.99
	Diluted earnings per share from continuing operations	$	18.21	$	17.68	$	14.98

Supplemental_Cash_Flow_Informa

Supplemental Cash Flow Information	12 Months Ended
	Dec. 31, 2013
Supplemental Cash Flow Information [Abstract]	'
Supplemental Cash Flow Information	'
	Supplemental Cash Flow Information
		Years Ended December 31,
	(in thousands)	2013		2012		2011
	Cash paid during the year for
	Interest and financing expenses (net of capitalization)	$	17,172	$	9,612	$	17,329
	Income taxes	96,273		99,956		96,919

Trade_and_Other_Accounts_Recei

Trade and Other Accounts Receivable, Net	12 Months Ended
	Dec. 31, 2013
Receivables [Abstract]	'
Trade and Other Accounts Receivable, Net	'
	Trade and Other Accounts Receivable, Net
		December 31,
	(in thousands)	2013		2012
	Trade receivables	$	286,737	$	261,492
	Income tax receivables	2,466		18,824
	Other	20,644		16,739
		$	309,847	$	297,055

Inventories

Inventories	12 Months Ended
	Dec. 31, 2013
Inventory Disclosure [Abstract]	'
Inventories	'
	Inventories
		December 31,
	(in thousands)	2013		2012
	Finished goods and work-in-process	$	257,446	$	265,017
	Raw materials	41,799		48,881
	Stores, supplies, and other	8,273		8,776
		$	307,518	$	322,674
	Our U.S. inventories, which are stated on the LIFO basis, amounted to $109 million at December 31, 2013, which was below replacement cost by approximately $56 million. At December 31, 2012, LIFO basis inventories were $111 million, which was approximately $58 million below replacement cost.
	Our foreign inventories amounted to $192 million at December 31, 2013 and $205 million at December 31, 2012.
	The reserves for obsolete and slow-moving inventory included in the table above were not material at December 31, 2013 and December 31, 2012.

Prepaid_Expenses_and_Other_Cur

Prepaid Expenses and Other Current Assets	12 Months Ended
	Dec. 31, 2013
Prepaid Expense and Other Assets, Current [Abstract]	'
Prepaid Expenses and Other Current Assets	'
	Prepaid Expenses and Other Current Assets
		December 31,
	(in thousands)	2013		2012
	Income taxes on intercompany profit	$	13,812	$	12,507
	Dividend funding	12,996		0
	Other	6,176		5,678
		$	32,984	$	18,185

Property_Plant_and_Equipment_a

Property, Plant, and Equipment, at Cost	12 Months Ended
	Dec. 31, 2013
Property, Plant and Equipment [Abstract]	'
Property, Plant, and Equipment, at Cost	'
	Property, Plant, and Equipment, at Cost
			December 31,
	(in thousands)		2013		2012
	Land		$	41,891	$	42,713
	Land improvements		31,980		31,452
	Leasehold improvements		1,134		1,148
	Buildings		138,823		191,866
	Machinery and equipment		740,003		772,256
	Construction in progress		31,365		31,532
			$	985,196	$	1,070,967
	We depreciate the cost of property, plant, and equipment by the straight-line method and primarily over the following useful lives:
	Land improvements	5 - 30 years
	Buildings	10 - 50 years
	Machinery and equipment	3 - 15 years
	At December 31, 2012, assets held for lease and reflected in the table above included $3 million of land, $2 million of land improvements, $66 million of buildings, and $38 million of machinery and equipment. Accumulated depreciation on these assets was $11 million at December 31, 2012. All of these assets represented the assets of Foundry Park I, which were sold in 2013. Refer to Note 2 for further information. Depreciation expense was $35 million in 2013, $34 million in 2012, and $33 million in 2011.

Intangibles_Net_of_Amortizatio

Intangibles (Net of Amortization) and Goodwill	12 Months Ended
	Dec. 31, 2013
Goodwill and Intangible Assets Disclosure [Abstract]	'
Intangibles (Net of Amortization) and Goodwill	'
	Intangibles (Net of Amortization) and Goodwill
			December 31,
			2013				2012
	(in thousands)		Gross		Accumulated		Gross		Accumulated
			Carrying		Amortization		Carrying		Amortization
			Amount				Amount
	Amortizing intangible assets
	Formulas and technology		$	88,917	$	77,217	$	91,662	$	74,762
	Contracts		7,127		5,528		9,593		6,734
	Customer bases		7,012		2,918		7,021		2,400
	Trademarks and trade names		1,591		610		1,586		426
	Goodwill		4,945				5,002
			$	109,592	$	86,273	$	114,864	$	84,322
	Aggregate amortization expense				$	7,194			$	7,433
	Aggregate amortization expense was $9 million in 2011. The change in the goodwill amount between 2012 and 2013 is due to foreign currency fluctuations. All of the intangibles relate to the petroleum additives segment. There is no accumulated goodwill impairment.
	Estimated annual amortization expense related to our intangible assets for the next five years is expected to be (in thousands):
	2014	$	6,163
	2015	5,790
	2016	1,910
	2017	746
	2018	715
	We amortize contracts over 1.5 to 10 years; customer bases over 20 years; formulas and technology over 5 to 20 years; and trademarks and trade names over 10 years.

Deferred_Charges_and_Other_Ass

Deferred Charges and Other Assets	12 Months Ended
	Dec. 31, 2013
Other Assets, Noncurrent [Abstract]	'
Deferred Charges and Other Assets	'
	Deferred Charges and Other Assets
		December 31,
	(in thousands)	2013		2012
	Interest rate swap deposits	$	25,839	$	37,694
	Deferred financing costs, net of amortization	7,390		8,560
	Asbestos insurance receivables	5,596		6,498
	Other	4,727		19,255
		$	43,552	$	72,007
	See Note 12 for further information on our long-term debt and Note 15 for further information on interest rate swaps.

Accrued_Expenses

Accrued Expenses	12 Months Ended
	Dec. 31, 2013
Accrued Liabilities, Current [Abstract]	'
Accrued Expenses	'
	Accrued Expenses
		December 31,
	(in thousands)	2013		2012
	Employee benefits, payroll, and related taxes	$	28,779	$	28,659
	Customer rebates	20,517		21,881
	Taxes other than income and payroll	3,929		4,517
	Repurchase of NewMarket Corporation common stock	3,842		0
	Other	20,925		24,004
		$	77,992	$	79,061

Longterm_Debt

Long-term Debt	12 Months Ended
	Dec. 31, 2013
Long-term Debt and Capital Lease Obligations [Abstract]	'
Long-term Debt	'
	Long-term Debt
			December 31,
	(in thousands)		2013		2012
	Senior notes - 4.10% due 2022		$	349,467	$	349,407
	Revolving credit facility		0		75,000
			$	349,467	$	424,407
	4.10% Senior Notes - In 2012, we issued $350 million aggregate principal amount of 4.10% senior notes due 2022 at an issue price of 99.83%. The 4.10% senior notes are our senior unsecured obligations and are jointly and severally guaranteed on a senior unsecured basis by all existing and future domestic subsidiaries that also guarantee our obligations under the revolving credit facility or any of our other indebtedness. We incurred financing costs in 2012 and 2013 totaling approximately $5 million related to the 4.10% senior notes, which are being amortized over the term of the agreement.
	The 4.10% senior notes and the subsidiary guarantees rank:
	•	equal in right of payment with all of our and the guarantors' existing and future senior unsecured indebtedness; and
	•	senior in right of payment to any of our and the guarantors' future subordinated indebtedness.
	The indenture governing the 4.10% senior notes contains covenants that, among other things, limit our ability and the ability of our subsidiaries to:
	•	create or permit to exist liens;
	•	enter into sale-leaseback transactions;
	•	incur additional guarantees; and
	•	sell all or substantially all of our assets or consolidate or merge with or into other companies.
	We were in compliance with all covenants under the indenture governing the 4.10% senior notes as of December 31, 2013 and December 31, 2012.
	During March 2013, we registered these 4.10% senior notes under the Securities Act of 1933. All previously unregistered 4.10% senior notes that were outstanding at December 31, 2012 have been exchanged for an equal aggregate principal amount of registered 4.10% senior notes.
	Revolving Credit Facility – In 2012, we entered into a Credit Agreement with a term of five years. The Credit Agreement provides for a $650 million, multicurrency revolving credit facility, with a $100 million sublimit for multicurrency borrowings, a $100 million sublimit for letters of credit, and a $20 million sublimit for swingline loans. The Credit Agreement includes an expansion feature which allows us, subject to certain conditions, to request an increase to the aggregate amount of the revolving credit facility or obtain incremental term loans in an amount up to $150 million.
	The obligations under the Credit Agreement are unsecured and are fully guaranteed by NewMarket and the subsidiary guarantors. The revolving credit facility matures on March 14, 2017.
	Borrowings made under the revolving credit facility bear interest at an annual rate equal to, at our election, either (1) the ABR plus the Applicable Rate (solely in the case of loans denominated in U.S. dollars to NewMarket) or (2) the Adjusted LIBO Rate plus the Applicable Rate. ABR is the greatest of (i) the rate of interest publicly announced by the Administrative Agent as its prime rate, (ii) the federal funds effective rate plus 0.5%, or (iii) the Adjusted LIBO Rate for a one month interest period plus 1%. The Adjusted LIBO Rate means the rate at which Agreed Currencies in the London interbank market for certain periods (as selected by NewMarket) are quoted, as adjusted for statutory reserve requirements. Depending on our consolidated Leverage Ratio, the Applicable Rate ranges from 0.50% to 1.00% for loans bearing interest based on the ABR and from 1.50% to 2.00% for loans bearing interest based on the Adjusted LIBO Rate. At December 31, 2013, the Applicable Rate was 0.50% for loans bearing interest based on the ABR and 1.50% for loans bearing interest based on the Adjusted LIBO Rate.
	The Credit Agreement contains financial covenants that require NewMarket to maintain a consolidated Leverage Ratio (as defined in the Credit Agreement) of no more than 3.00 to 1.00 and a consolidated Interest Coverage Ratio (as defined in the Credit Agreement) of no less than 3.00 to 1.00, calculated on a rolling four quarter basis, as of the end of each fiscal quarter ending on and after March 31, 2012. We were in compliance with all covenants under the revolving credit facility at December 31, 2013 and December 31, 2012.
	The following table provides information related to the unused portion of our revolving credit facility in effect at December 31, 2013 and December 31, 2012:
			December 31,
	(in millions)		2013		2012
	Maximum borrowing capacity under the revolving credit facility		$	650	$	650
	Outstanding borrowings under the revolving credit facility		0		75
	Outstanding letters of credit		3		3
	Unused portion of revolving credit facility		$	647	$	572
	The average interest rate for borrowings under our revolving credit facilities was 2.2% during 2013 and 1.8% during 2012.
	None of our outstanding borrowings at December 31, 2013 are due in the next five years.

Other_Noncurrent_Liabilities

Other Noncurrent Liabilities	12 Months Ended
	Dec. 31, 2013
Other Liabilities, Noncurrent [Abstract]	'
Other Noncurrent Liabilities	'
	Other Noncurrent Liabilities
		December 31,
	(in thousands)	2013		2012
	Employee benefits	$	90,088	$	140,501
	Interest rate swaps	18,941		30,508
	Environmental remediation	15,337		16,869
	Asbestos litigation reserve	10,106		9,453
	Other	23,273		23,634
		$	157,745	$	220,965
	The decrease in employee benefits primarily reflects the improvement in the funded status of our pension and postretirement plans resulting from higher discount rates, as well as favorable market performance. See Note 18 for further information on these employee benefit plans. Environmental remediation includes our asset retirement obligations. Further information on the interest rate swaps is in Note 15.

Stockbased_Compensation

Stock-based Compensation	12 Months Ended
	Dec. 31, 2013
Share-based Compensation [Abstract]	'
Stock-based Compensation	'
	Stock-based Compensation
	The 2004 Incentive Compensation and Stock Plan (the Plan) was approved on May 24, 2004. Any employee of our company or an affiliate or a person who is a member of our Board of Directors or the board of directors of an affiliate is eligible to participate in the Plan if the Compensation Committee of the Board of Directors (the Administrator), in its sole discretion, determines that such person has contributed significantly or can be expected to contribute significantly to the profits or growth of our company or its affiliates (each, a participant). Under the terms of the Plan, we may grant participants stock awards, incentive awards, or options (which may be either incentive stock options or nonqualified stock options), or stock appreciation rights (SARs), which may be granted with a related option. Stock options entitle the participant to purchase a specified number of shares of our common stock at a price that is fixed by the Administrator at the time the option is granted; provided, however, that the price cannot be less than the shares’ fair market value on the date of grant. The maximum period in which an option may be exercised is fixed by the Administrator at the time the option is granted but, in the case of an incentive stock option, cannot exceed ten years. No participant may be granted or awarded, in any calendar year, shares, options, or SARs covering more than 200,000 shares of our common stock in the aggregate. For purposes of this limitation and the individual limitation on the grant of options, an option and corresponding SAR are treated as a single award.
	The maximum aggregate number of shares of our common stock that may be issued under the Plan is 1,500,000. At December 31, 2013, 1,429,078 shares were available for grant.
	During 2013, 9,534 shares of our common stock were issued under the Plan. Of those shares, 8,850 were issued to employees as restricted stock subject to a three-year vesting period and 684 shares were issued to six of our non-employee directors and vested immediately.
	We calculate fair value based on the closing price of our common stock on the date of grant. As award recipients are entitled to receive dividends during the vesting period, we made no adjustment to the fair value of the award for dividends.
	A summary of activity during 2013 related to NewMarket’s restricted stock awards is presented below in whole shares:
		Number of Shares	Weighted Average Grant-Date Fair Value
	Nonvested restricted stock awards at January 1, 2013	11,940	$	246.93
	Granted in 2013	8,850	314.19
	Vested in 2013	65	246.93
	Forfeited in 2013	455	252.1
	Nonvested restricted stock awards at December 31, 2013	20,270	276.18
	We recognized compensation expense of $1 million in 2013, $400 thousand in 2012, and $3 million in 2011 related to restricted stock awards. At December 31, 2013, total unrecognized compensation expense related to nonvested restricted stock awards was $4 million, which is expected to be recognized over a period of 2.2 years.

Derivatives_and_Hedging_Activi

Derivatives and Hedging Activities	12 Months Ended
	Dec. 31, 2013
Derivative Instruments and Hedging Activities Disclosure [Abstract]	'
Derivatives and Hedging Activities	'
	Derivatives and Hedging Activities
	We are exposed to certain risks arising from both our business operations and economic conditions. We primarily manage our exposures to a wide variety of business and operational risks through management of our core business activities.
	We manage certain economic risks, including interest rate, liquidity, and credit risk primarily by managing the amount, sources, and duration of our debt funding, as well as through the use of derivative financial instruments. Specifically, we have entered into interest rate swaps to manage our exposure to interest rate movements.
	Our foreign operations expose us to fluctuations of foreign exchange rates. These fluctuations may impact the value of our cash receipts and payments as compared to our reporting currency, the U.S. Dollar. To manage this exposure, we sometimes enter into foreign currency forward contracts to minimize currency exposure due to cash flows from foreign operations. There were no such contracts outstanding at December 31, 2013 or December 31, 2012.
	Cash Flow Hedge of Interest Rate Risk
	In January 2010, we entered into an interest rate swap to manage our exposure to interest rate movements on the Foundry Park I mortgage loan and to reduce variability in interest expense. This mortgage loan interest rate swap terminated with the payoff of the mortgage loan on May 1, 2012. We also had an interest rate swap to manage our exposure to interest rate movements on the Foundry Park I construction loan and to add stability to capitalized interest expense. The Foundry Park I construction loan interest rate swap matured on January 1, 2010. Both interest rate swaps were designated and qualified as cash flow hedges. As such, the effective portion of changes in the fair value of the swaps was recorded in accumulated other comprehensive loss and was subsequently reclassified into earnings in the period that the hedged forecasted transaction affected earnings. Any ineffective portion of changes in the fair value of the swap was recognized immediately in earnings. Due to the sale of the real estate assets of Foundry Park I in July 2013, the amounts in accumulated other comprehensive loss for both interest rate swaps were completely recognized in the Consolidated Statements of Income in 2013.
	Non-designated Hedges
	On June 25, 2009, we entered into an interest rate swap with Goldman Sachs in the notional amount of $97 million and with a maturity date of January 19, 2022 (Goldman Sachs interest rate swap). NewMarket entered into the Goldman Sachs interest rate swap in connection with the termination of a loan application and related rate lock agreement between Foundry Park I and Principal Commercial Funding II, LLC (Principal). When the rate lock agreement was originally executed in 2007, Principal simultaneously entered into an interest rate swap with a third party to hedge Principal’s exposure to fluctuation in the ten-year United States Treasury Bond rate. Upon the termination of the rate lock agreement on June 25, 2009, Goldman Sachs both assumed Principal’s position with the third party and entered into an offsetting interest rate swap with NewMarket. Under the terms of this interest rate swap, NewMarket is making fixed rate payments at 5.3075% and Goldman Sachs makes variable rate payments based on three-month LIBOR. We have collateralized this exposure through cash deposits posted with Goldman Sachs amounting to $26 million at December 31, 2013 and $38 million at December 31, 2012.
	We have made an accounting policy election to not offset derivative fair value amounts with the fair value amounts for the right to reclaim cash collateral under our master netting arrangement. We do not use hedge accounting for the Goldman Sachs interest rate swap, and therefore, immediately recognize any change in the fair value of this derivative financial instrument directly in earnings.
	*****
	The table below presents the fair value of our derivative financial instruments, as well as their classification on the Consolidated Balance Sheets as of December 31, 2013 and December 31, 2012.
		Liability Derivatives
		31-Dec-13						31-Dec-12
	(in thousands)	Balance Sheet Location		Fair				Balance Sheet Location		Fair
				Value						Value
	Derivatives Not Designated as Hedging Instruments
	Goldman Sachs interest rate swap	Accrued expenses and Other noncurrent liabilities		$	21,211			Accrued expenses and Other noncurrent liabilities		$	32,761
	The tables below present the effect of our derivative financial instruments on the Consolidated Statements of Income.
	Effect of Derivative Instruments on the Consolidated Statements of Income
	Designated Cash Flow Hedges
	(in thousands)
	Derivatives in	Amount of Gain (Loss)												Location of Gain (Loss) Reclassified from Accumulated OCI into Income (Effective Portion)	Amount of Gain (Loss)
	Cash Flow	Recognized in OCI on													Reclassified from
	Hedging	Derivative (Effective Portion)													Accumulated OCI into
	Relationship														Income (Effective Portion)
		Years Ended December 31,													Years Ended December 31,
		2013				2012				2011					2013			2012			2011
	Mortgage loan interest rate swap	$	0			$	(540	)		$	(2,627	)		Discontinued operations	$	(2,727	)	$	(1,376	)	$	(1,584	)
	Construction loan interest rate swap	$	0			$	0			$	0			Discontinued operations	$	(4,068	)	$	(86	)	$	(85	)
	Of the amounts in discontinued operations reflected in the table above, $4 million from the construction loan was recorded as a component of the gain on sale of discontinued business. The remaining amounts are recorded as a component of income from operations of discontinued business. There was no gain or loss recognized in the Consolidated Statements of Income in 2013, 2012, or 2011 due to ineffectiveness.
	Effect of Derivative Instruments on the Consolidated Statements of Income
	Not Designated Derivatives
	(in thousands)
	Derivatives Not Designated as	Location of Gain (Loss)		Amount of Gain (Loss) Recognized in
	Hedging Instruments	Recognized in Income on Derivatives		Income on Derivatives
				Years Ended December 31,
				2013				2012				2011
	Goldman Sachs interest rate swap	Other income (expense), net		$	6,690			$	(5,346	)		$	(17,516	)
	Credit-risk Related Contingent Features
	The agreement we have with our current derivative counterparty contains a provision where we could be declared in default on our derivative obligation if repayment of indebtedness is accelerated by our lender(s) due to our default on the indebtedness.
	As of December 31, 2013, the fair value of the derivative in a net liability position related to this agreement, which includes accrued interest but excludes any adjustment for nonperformance risk, was $21 million. We have minimum collateral posting thresholds with the counterparty and have posted cash collateral of $26 million as of December 31, 2013. If required, we could have settled our obligations under the agreement at the termination value of $21 million at December 31, 2013.

Fair_Value_Measurements

Fair Value Measurements	12 Months Ended
	Dec. 31, 2013
Fair Value Disclosures [Abstract]	'
Fair Value Measurements	'
	Fair Value Measurements
	The following table provides information on assets and liabilities measured at fair value on a recurring basis. No material events occurred during 2013 requiring adjustment to the recognized balances of assets or liabilities which are recorded at fair value on a nonrecurring basis.
		Carrying		Fair Value		Fair Value Measurements Using
		Amount in
		Consolidated
		Balance Sheets				Level 1		Level 2		Level 3
	(in thousands)	December 31, 2013
	Cash and cash equivalents	$	238,703	$	238,703	$	238,703	$	0	$	0
	Cash deposit for collateralized interest rate swap	25,839		25,839		25,839		0		0
	Interest rate swap liability	21,211		21,211		0		21,211		0
		December 31, 2012
	Cash and cash equivalents	$	89,129	$	89,129	$	89,129	$	0	$	0
	Cash deposit for collateralized interest rate swap	37,694		37,694		37,694		0		0
	Interest rate swap liability	32,761		32,761		0		32,761		0
	We determine the fair value of the derivative instrument shown in the table above by using widely-accepted valuation techniques, including discounted cash flow analysis on the expected cash flows of each instrument. The analysis reflects the contractual terms of the derivatives, including the period to maturity, and uses observable market-based inputs.
	The fair value of the interest rate swap is determined using the market standard methodology of netting the discounted future fixed cash receipts and the discounted expected variable cash payments. The variable cash payments are based on an expectation of future interest rates derived from observable market interest rate curves. In determining the fair value measurements, we incorporate credit valuation adjustments to appropriately reflect both our nonperformance risk and the counterparties’ nonperformance risk.
	Although we have determined that the majority of the inputs used to value our derivative falls within Level 2 of the fair value hierarchy, the credit valuation adjustment associated with the derivative utilizes Level 3 inputs. These Level 3 inputs include estimates of current credit spreads to evaluate the likelihood of default by both us and the counterparties to the derivative. As of December 31, 2013 and December 31, 2012, we have assessed the significance of the impact of the credit valuation adjustment on the overall valuation of our derivative and have determined that the credit valuation adjustment is not significant to the overall valuation of the derivative. Accordingly, we have determined that our derivative valuation should be classified in Level 2 of the fair value hierarchy.
	We have made an accounting policy election to measure credit risk of any derivative financial instruments subject to master netting agreements on a net basis by counterparty portfolio.
	Long-term debt - We record the value of our long-term debt at historical cost. The estimated fair value of our long-term debt is shown in the table below and is based primarily on estimated current rates available to us for debt of the same remaining duration and adjusted for nonperformance risk and credit risk. The estimated fair value is determined by the market standard practice of modeling the contractual cash flows required under the debt instrument and discounting the cash flows back to present value at the appropriate credit-risk adjusted market interest rates. For floating rate debt obligations, we use forward rates, derived from observable market yield curves, to project the expected cash flows we will be required to make under the debt instrument. We then discount those cash flows back to present value at the appropriate credit-risk adjusted market interest rates. The fair value is categorized as Level 2.
		December 31, 2013				December 31, 2012
	(in thousands)	Carrying		Fair		Carrying		Fair
		Amount		Value		Amount		Value
	Long-term debt	$	349,467	$	345,283	$	424,407	$	432,395

Contractual_Commitments_and_Co

Contractual Commitments and Contingencies	12 Months Ended
	Dec. 31, 2013
Commitments and Contingencies Disclosure [Abstract]	'
Contractual Commitments and Contingencies	'
	Contractual Commitments and Contingencies
	Contractual Commitments—NewMarket has operating lease agreements primarily for office space, transportation equipment, and storage facilities. Rental expense was $27 million in 2013, $25 million in 2012, and $24 million in 2011.
	Future lease payments for all noncancelable operating leases as of December 31, 2013 are (in millions):
	2014	$	12
	2015	9
	2016	7
	2017	4
	2018	2
	After 2018	9
	We have contractual obligations for the construction of assets, as well as purchases of property and equipment of approximately $7 million at December 31, 2013.
	Raw Material Purchase Obligations—We have raw material purchase obligations over the next five years amounting to approximately $271 million at December 31, 2013 for agreements to purchase goods or services that are enforceable, legally binding, and specify all significant terms, including: fixed or minimum quantities to be purchased; fixed, minimum, or variable price provisions; and the approximate timing of the transaction. Raw material purchase obligations exclude agreements that are cancelable without penalty. Purchase orders made in the ordinary course of business are excluded from this amount. Any amounts for which we are liable under purchase orders are reflected in our Consolidated Balance Sheets as accounts payable or accrued expenses.
	Litigation—We are involved in legal proceedings that are incidental to our business and include administrative or judicial actions seeking remediation under environmental laws, such as Superfund. Some of these legal proceedings relate to environmental matters and involve governmental authorities. For further information see “Environmental” below and Item 1 of this Form 10-K.
	While it is not possible to predict or determine with certainty the outcome of any legal proceeding, we believe the outcome of any of these proceedings, or all of them combined, will not result in a material adverse effect on our consolidated results of operations, financial condition, or cash flows.
	As we previously disclosed, the United States Department of Justice has advised us that it is conducting a review of certain of our foreign business activities in relation to compliance with relevant U.S. economic sanctions programs and anti-corruption laws, as well as certain historical conduct in the domestic U.S. market, and has requested certain information in connection with such review. We are cooperating with the investigation. In connection with such cooperation, we have voluntarily agreed to provide certain information and are conducting an internal review for that purpose.
	Asbestos
	We are a defendant in personal injury lawsuits involving exposure to asbestos. These cases involve exposure to asbestos in premises owned or operated, or formerly owned or operated, by subsidiaries of NewMarket. We have never manufactured, sold, or distributed products that contain asbestos. Nearly all of these cases are pending in Texas, Louisiana, or Illinois and involve multiple defendants. We maintain an accrual for these proceedings, as well as a receivable for expected insurance recoveries.
	The accrual for our premises asbestos liability related to currently asserted claims is based on the following assumptions and factors:
	•	We are often one of many defendants. This factor influences both the number of claims settled against us and the indemnity cost associated with such resolutions.
	•	The estimated percent of claimants in each case that will actually, after discovery, make a claim against us, out of the total number of claimants in a case, is based on a level consistent with past experience and current trends.
	•	We utilize average comparable plaintiff cost history as the basis for estimating pending premises asbestos related claims. These claims are filed by both former contractors’ employees and former employees who worked at past and present company locations. We also include an estimated inflation factor in the calculation.
	•	No estimate is made for unasserted claims.
	•	The estimated recoveries from insurance and Albemarle Corporation (a former operation of our company) for these cases are based on, and are consistent with, the 2005 settlement agreements with Travelers Indemnity Company.
	Based on the above assumptions, we have provided an undiscounted liability related to premises asbestos claims of $12 million at December 31, 2013 and $11 million December 31, 2012. The liabilities related to asbestos claims are included in accrued expenses (current portion) and other noncurrent liabilities on the Consolidated Balance Sheets. Certain of these costs are recoverable through our insurance coverage and an agreement with Albemarle Corporation. The receivable for these recoveries related to premises asbestos liabilities was $6 million at December 31, 2013 and $8 million at December 31, 2012. These receivables are included in trade and other accounts receivable, net on the Consolidated Balance Sheets for the current portion. The noncurrent portion is included in deferred charges and other assets.
	Environmental—We are involved in environmental proceedings and potential proceedings relating to soil and groundwater contamination, disposal of hazardous waste, and other environmental matters at several of our current or former facilities, or at third-party sites where we have been designated as a potentially responsible party (PRP). We accrue for environmental remediation and monitoring activities for which costs can be reasonably estimated and are probable. These estimates are based on an assessment of the site, available clean-up methods, and prior experience in handling remediation. Recorded liabilities are discounted to present value (including an inflation factor in the estimate) only if we can reliably determine the amount and timing of future cash payments. While we believe we are currently adequately accrued for known environmental issues, it is possible that unexpected future costs could have a significant impact on our financial position, results of operations, and cash flows. Our total accruals for environmental remediation, dismantling, and decontamination were approximately $18 million at December 31, 2013 and $20 million at December 31, 2012.
	Our more significant environmental sites include a former TEL plant site in Louisiana (the Louisiana site) and a former Houston, Texas plant site (the Texas site). Together, the amounts accrued on a discounted basis related to these sites represent approximately $11 million at December 31, 2013 and $12 million at December 31, 2012 of the total accrual above, using discount rates ranging from 3% to 9%. Of the total accrued for these two sites, the amount related to remediation of groundwater and soil was $5 million for the Louisiana site and $6 million for the Texas site at December 31, 2013. The accrual for remediation of groundwater and soil at these two sites at December 31, 2012 was $6 million for the Louisiana site and $6 million for the Texas site. The aggregate undiscounted amount for these sites was $16 million at both December 31, 2013 and December 31, 2012.
	We spent $19 million in 2013, $18 million in 2012, and $19 million in 2011 for ongoing environmental operating and clean-up costs, excluding depreciation of previously capitalized expenditures.
	In 2000, the EPA named us as a PRP under Superfund law for the clean-up of soil and groundwater contamination at the five grouped disposal sites known as "Sauget Area 2 Sites" in Sauget, Illinois. Without admitting any fact, responsibility, fault, or liability in connection with this site, we are participating with other PRPs in site investigations and feasibility studies. The Sauget Area 2 Sites PRPs received notice of approval from the EPA of the Remedial Investigation report on February 27, 2009, notice of approval of the October 2009 Human Health Risk Assessment on December 17, 2009, and approval of the Feasibility Study report on April 3, 2013. Finally, in December 2013, the EPA issued its Record of Decision confirming its remedies for the selected Sauget Area 2 sites. We have accrued our estimated proportional share of the remedial costs and expenses addressed in the Record of Decision. We do not believe there is any additional information available as a basis for revision of the liability that we have established at December 31, 2013. The amount accrued for this site is not material.
	Guarantees—We have agreements with several financial institutions that provide guarantees for certain business activities of our subsidiaries, including performance, insurance, credit, lease, and customs and excise guarantees. The parent company provides guarantees of the subsidiaries' performance under these agreements and also provides a guarantee for repayment of a line of credit for a subsidiary in China. Guarantees outstanding under all of these agreements at December 31, 2013 are $11 million. Certain of these guarantees are secured by letters of credit, all of which were issued under the $100 million letter of credit sub-facility of our revolving credit facility. The maximum potential amount of future payments under all other guarantees not secured by letters of credit at December 31, 2013 is $24 million. Expiration dates of the letters of credit and certain guarantees range from 2013 to 2024. Some of the guarantees have no expiration date. We renew letters of credit as necessary.

Pension_Plans_and_Other_Postre

Pension Plans and Other Postretirement Benefits	12 Months Ended
	Dec. 31, 2013
Compensation and Retirement Disclosure [Abstract]	'
Pension Plans and Other Postretirement Benefits	'
	Pension Plans and Other Postretirement Benefits
	NewMarket uses a December 31 measurement date for all of our plans.
	U.S. Retirement Plans
	NewMarket sponsors four pension plans for all full-time U.S. employees that offer a benefit based primarily on years of service and compensation. Employees do not contribute to these pension plans. The plans are as follows:
	•	Salaried employees pension plan;
	•	Afton pension plan for union employees (the Sauget plan);
	•	Ethyl retirement income plan for union employees in Houston, Texas (the Houston plan); and
	•	Afton Chemical Additives pension plan for union employees in Port Arthur, Texas (the Port Arthur plan).
	In addition, we offer an unfunded, nonqualified supplemental pension plan. This plan restores the pension benefits from our regular pension plans that would have been payable to designated participants if it were not for limitations imposed by U.S. federal income tax regulations.
	We also provide postretirement health care benefits and life insurance to eligible retired employees. NewMarket pays the premium for the insurance contract that holds plan assets for retiree life insurance benefits.
	The components of net periodic pension and postretirement benefit costs, as well as other amounts recognized in other comprehensive income (loss), are shown below.
			Years Ended December 31,
			Pension Benefits											Postretirement Benefits
	(in thousands)		2013				2012				2011			2013				2012			2011
	Net periodic benefit cost
	Service cost		$	11,087			$	8,801			$	7,055		$	2,130			$	1,885		$	1,514
	Interest cost		9,571				9,583				9,079			2,598				3,052			3,158
	Expected return on plan assets		(14,519		)		(13,264		)		(11,445		)	(1,452		)		(1,492		)	(1,595		)
	Amortization of prior service cost		176				210				306			9				9			8
	Amortization of actuarial net loss (gain)		7,080				5,329				3,203			(8		)		(66		)	(602		)
	Net periodic benefit cost		13,395				10,659				8,198			3,277				3,388			2,483
	Other changes in plan assets and benefit obligations recognized in other comprehensive income (loss)
	Actuarial net (gain) loss		(61,710		)		25,509				37,484			(12,902		)		2,442			5,072
	Prior service cost		972				0				0			0				0			0
	Amortization of actuarial net (loss) gain		(7,080		)		(5,329		)		(3,203		)	8				66			602
	Amortization of prior service cost		(176		)		(210		)		(306		)	(9		)		(9		)	(8		)
	Total recognized in other comprehensive income (loss)		(67,994		)		19,970				33,975			(12,903		)		2,499			5,666
	Total recognized in net periodic benefit cost and other comprehensive income (loss)		$	(54,599	)		$	30,629			$	42,173		$	(9,626	)		$	5,887		$	8,149
	The estimated actuarial net loss to be amortized from accumulated other comprehensive loss into net periodic benefit cost during 2014 is expected to be $4 million for pension plans. The estimated prior service cost to be amortized from accumulated other comprehensive loss into net periodic benefit cost during 2014 is expected to be $100 thousand for pension plans. The amounts to be amortized from accumulated other comprehensive loss into net periodic benefit cost during 2014 related to postretirement benefits are not material.
	Changes in the plans’ benefit obligations and assets follow.
			Years Ended December 31,
			Pension Benefits								Postretirement Benefits
	(in thousands)		2013				2012				2013			2012
	Change in benefit obligation
	Benefit obligation at beginning of year		$	234,752			$	191,061			$	68,097		$	64,483
	Service cost		11,087				8,801				2,130			1,885
	Interest cost		9,571				9,583				2,598			3,052
	Actuarial net (gain) loss		(28,433		)		31,760				(12,964		)	2,224
	Plan amendment		973				0				0			0
	Benefits paid		(7,180		)		(6,453		)		(3,335		)	(3,547		)
	Benefit obligation at end of year		220,770				234,752				56,526			68,097
	Change in plan assets
	Fair value of plan assets at beginning of year		164,732				129,086				25,272			25,903
	Actual return on plan assets		47,796				19,515				1,390			1,274
	Employer contributions		22,825				22,584				1,524			1,642
	Benefits paid		(7,180		)		(6,453		)		(3,335		)	(3,547		)
	Fair value of plan assets at end of year		228,173				164,732				24,851			25,272
	Funded status		$	7,403			$	(70,020	)		$	(31,675	)	$	(42,825	)
	Amounts recognized in the Consolidated Balance Sheets
	Current liabilities		$	(2,422	)		$	(2,442	)		$	(1,535	)	$	(1,900	)
	Noncurrent assets		39,368				0				0			0
	Noncurrent liabilities		(29,543		)		(67,578		)		(30,140		)	(40,925		)
			$	7,403			$	(70,020	)		$	(31,675	)	$	(42,825	)
	Amounts recognized in accumulated other comprehensive loss
	Actuarial net loss (gain)		$	46,421			$	115,211			$	(16,232	)	$	(3,338	)
	Prior service (credit) cost		(306		)		(1,102		)		9			18
			$	46,115			$	114,109			$	(16,223	)	$	(3,320	)
	The accumulated benefit obligation for all domestic defined benefit pension plans was $188 million at December 31, 2013 and $195 million at December 31, 2012.
	The fair market value of plan assets exceeded both the projected benefit obligation and the accumulated benefit obligation for all domestic plans, except the nonqualified plan, at December 31, 2013. The net asset position of these plans is included in prepaid pension cost on the Consolidated Balance Sheets at December 31, 2013
	The projected benefit obligation exceeded the fair market value of plan assets for all domestic plans at December 31, 2012. The accumulated benefit obligation exceeded the fair market value of plan assets for all domestic plans, except for the Salaried plan and the Houston plan, at December 31, 2012.
	The net liability position of plans in which the projected benefit obligation exceeded assets is included in other noncurrent liabilities on the Consolidated Balance Sheets.
	A portion of the accrued benefit cost for the nonqualified plan is included in current liabilities at both December 31, 2013 and December 31, 2012. As the nonqualified plan is unfunded, the amount reflected in current liabilities represents the expected benefit payments related to the nonqualified plan during 2014.
	The first table below shows information on domestic pension plans with the accumulated benefit obligation in excess of plan assets. The second table presents information on domestic pension plans with the projected benefit obligation in excess of plan assets.
		December 31,
(in thousands)		2013				2012
Plans with the accumulated benefit obligation in excess of the fair market value of plan assets
Projected benefit obligation		$	31,966			$	67,123
Accumulated benefit obligation		29,805				63,831
Fair market value of plan assets		0				31,501
		December 31,
(in thousands)		2013				2012
Plans with the projected benefit obligation in excess of the fair market value of plan assets
Projected benefit obligation		$	31,966			$	234,752
Fair market value of plan assets		0				164,732
There are no assets held in the nonqualified plan by the trustee for the retired beneficiaries of the nonqualified plan. Payments to retired beneficiaries of the nonqualified plan are made with cash from operations.
Assumptions—We used the following assumptions to calculate the results of our retirement plans:
		Pension Benefits									Postretirement Benefits
		2013			2012			2011			2013		2012			2011
Weighted-average assumptions used to determine net periodic benefit cost for years ended December 31,
Discount rate		4.125	%		5	%		5.875	%		4.125	%	5	%		5.875	%
Expected long-term rate of return on plan assets		8.5	%		9	%		9	%		6	%	6.25	%		6.25	%
Rate of projected compensation increase		3.5	%		3.5	%		3.5	%
Weighted-average assumptions used to determine benefit obligations at December 31,
Discount rate		5	%		4.125	%		5	%		5	%	4.125	%		5	%
Rate of projected compensation increase		3.5	%		3.5	%		3.5	%
For pension plans, we base the assumed expected long-term rate of return for plan assets on an analysis of our actual investments, including our asset allocation, as well as an analysis of expected returns. This analysis reflects the expected long-term rates of return for each significant asset class and economic indicator. As of January 1, 2014, the expected rates were 8.8% for U.S. large cap stocks, 5.2% for fixed income, and 3.2% for inflation. The range of returns relies both on forecasts and on broad-market historical benchmarks for expected return, correlation, and volatility for each asset class. Our asset allocation is predominantly weighted toward equities. Through our ongoing monitoring of our investments and review of market data, we have determined that we should maintain the expected long-term rate of return for our U.S. plans at 8.5% at December 31, 2013. For the post-retirement plan, we based the assumed expected long-term rate of return for plan assets on an evaluation of projected interest rates, as well as the guaranteed interest rate for our insurance contract.
Assumed health care cost trend rates are shown in the table below. The expected health care cost trend rate for 2013 was 7.5%.
		December 31,
		2013			2012
Health care cost trend rate assumed for next year		7	%		7.5	%
Rate to which the cost trend rate is assumed to decline (the ultimate trend rate)		5	%		5	%
Year that the rate reaches the ultimate trend rate		2018			2018
A one-percentage point change in the assumed health care cost trend rate would have the following effects:
(in thousands)		1%				1%
		Increase				Decrease
Effect on accumulated postretirement benefit obligation as of December 31, 2013		$	7,429			$	(5,854	)
Effect on net periodic postretirement benefit cost in 2013		860				(647		)
The Patient Protection and Affordable Care Act (PPACA), as amended by the Health Care and Education Reconciliation Act of 2010, was signed into law in March 2010. The PPACA mandates health care reforms with effective dates from 2010 to 2018, including an excise tax on high cost health care plans effective in 2018. The additional accumulated postretirement liability resulting from the PPACA is not material and has been included in the benefit obligation for our postretirement plan at December 31, 2013 and December 31, 2012. Given the complexity of the PPACA and the extended time period during which implementation is currently expected to occur, additional adjustments to the benefit obligation may be necessary.
Plan Assets—Pension plan assets are held and distributed by trusts and consist principally of common stock and investment-grade fixed income securities. We invest directly in common stocks, as well as in funds which primarily hold stock and debt securities. Our target allocation is 90% to 97% in equities and 3% to 10% in debt securities or cash.
The pension obligation is long-term in nature and the investment philosophy followed by the Pension Investment Committee is likewise long-term in its approach. The majority of the pension funds are invested in equity securities as historically, equity securities have outperformed debt securities and cash investments, resulting in a higher investment return over the long-term. While in the short-term, equity securities may underperform other investment classes, we are less concerned with short-term results and more concerned with long-term improvement. The pension funds are managed by six different investment companies who predominantly invest in U.S. and international equities. Each investment company’s performance is reviewed quarterly. A small portion of the funds is in investments, such as cash or short-term bonds, which historically has been less vulnerable to short-term market swings. These funds are used to provide the cash needed to meet our monthly obligations.
There are no significant concentrations of risk within plan assets, nor do the equity securities include any NewMarket common stock for any year presented.
The assets of the postretirement benefit plan are invested completely in an insurance contract held by Metropolitan Life. No NewMarket common stock is included in these assets.
The following table provides information on the fair value of our pension and postretirement benefit plans assets, as well as the related level within the fair value hierarchy.
		31-Dec-13															31-Dec-12
						Fair Value Measurements Using														Fair Value Measurements Using
(in thousands)		Fair Value				Level 1				Level 2			Level 3				Fair Value			Level 1			Level 2		Level 3
Pension Plans
Equity securities:
U. S. companies		$	176,790			$	176,790			$	0		$	0			$	114,491		$	114,491		$	0	$	0
International companies		13,217				13,217				0			0				10,018			10,018			0		0
Real estate investment trusts		2,921				2,921				0			0				1,475			1,475			0		0
Common collective trust		19,699				0				19,699			0				15,479			0			15,479		0
Money market instruments		3,637				3,637				0			0				6,792			6,792			0		0
Mutual funds—fixed income		9,623				9,623				0			0				9,521			9,521			0		0
Cash and cash equivalents		1,825				1,825				0			0				5,743			5,743			0		0
Insurance contract		461				0				461			0				1,213			0			1,213		0
		$	228,173			$	208,013			$	20,160		$	0			$	164,732		$	148,040		$	16,692	$	0
Postretirement Plans
Insurance contract		$	24,851			$	0			$	24,851		$	0			$	25,272		$	0		$	25,272	$	0
The valuation methodologies used to develop the fair value measurements for the investments in the table above is outlined below. There have been no changes in the valuation techniques used to value the investments.
•	Equity securities, including common stock and real estate investment trusts, are valued at the closing price reported on a national exchange.
•	The common collective trust (the trust) is valued at the net asset value of units held by the Plan based on the quoted market value of the underlying investments held by the fund. The trust invests primarily in a diversified portfolio of equity securities of companies located outside of the United States and Canada, as determined by a company's jurisdiction of incorporation. We may make withdrawals from the trust on the first business day of each month with at least six business days' notice. There are no restrictions on redemption as of December 31, 2013 or December 31, 2012.
•	Money market instruments are valued at cost, which approximates fair value.
•	Mutual funds are valued at the closing price reported on a national exchange.
•	Cash and cash equivalents are valued at cost.
•	The insurance contracts are unallocated funds deposited with an insurance company and are stated at an amount equal to the sum of all amounts deposited less the sum of all amounts withdrawn, adjusted for investment return.
Cash Flows—For U.S. plans, NewMarket expects to contribute $12 million to our pension plans in 2014. Contributions to our postretirement benefit plans are not expected to be material. The expected benefit payments for the next ten years are as follows.
(in thousands)		Expected Pension				Expected
		Benefit Payments				Postretirement
						Benefit Payments
2014		$	7,763			$	3,541
2015		9,041				3,442
2016		9,843				3,324
2017		10,799				3,242
2018		11,459				3,112
2019 through 2023		69,099				14,231
Foreign Retirement Plans
For most employees of our foreign subsidiaries, NewMarket has defined benefit pension plans that offer benefits based primarily on years of service and compensation. These defined benefit plans provide benefits for employees of our foreign subsidiaries located in Belgium, the United Kingdom, Germany, Canada, and Mexico. NewMarket generally contributes to investment trusts and insurance policies to provide for these plans.
Our foreign subsidiary in Canada also sponsors a defined benefit postretirement plan. This postretirement plan provides certain health care benefits and life insurance to eligible retired employees. We pay the entire premium for these benefits.
The components of net periodic pension and postretirement benefit costs, as well as other amounts recognized in other comprehensive income (loss), for these foreign defined benefit retirement plans are shown below.
		Years Ended December 31,
		Pension Benefits											Postretirement Benefits
(in thousands)		2013				2012				2011			2013				2012			2011
Net periodic benefit cost
Service cost		$	5,518			$	4,314			$	4,510		$	26			$	28		$	30
Interest cost		5,405				5,345				5,881			108				111			153
Expected return on plan assets		(6,900		)		(6,039		)		(6,365		)	0				0			0
Amortization of prior service (credit) cost		(23		)		(144		)		84			0				0			0
Amortization of transition obligation		0				0				0			44				53			53
Amortization of actuarial net loss		1,425				1,103				1,083			34				31			61
Settlements and curtailments		205				(336		)		0			187				0			0
Net periodic benefit cost		5,630				4,243				5,193			399				223			297
Other changes in plan assets and benefit obligations recognized in other comprehensive income (loss)
Actuarial net (gain) loss		(404		)		7,917				2,447			1				143			(374		)
Prior service cost		0				2,041				0			0				0			0
Settlements and curtailments		(710		)		(581		)		0			(347		)		0			0
Amortization of transition obligation		0				0				0			(44		)		(53		)	(53		)
Amortization of actuarial net loss		(1,425		)		(1,103		)		(1,083		)	(34		)		(31		)	(61		)
Amortization of prior service credit (cost)		23				144				(84		)	0				0			0
Total recognized in other comprehensive income (loss)		(2,516		)		8,418				1,280			(424		)		59			(488		)
Total recognized in net periodic benefit cost and other comprehensive income (loss)		$	3,114			$	12,661			$	6,473		$	(25	)		$	282		$	(191	)
The curtailment loss in 2013 in the table above reflects the workforce reduction at our Ethyl Canada facility as a result of the decision to sell this facility and terminate the workforce. The settlement gain in 2012 in the table above reflects the completion of a partial wind-up of our Canadian salaried pension plan.
The estimated actuarial net loss to be amortized from accumulated other comprehensive loss into net periodic benefit cost during 2014 is expected to be $1 million for pension plans. The estimated prior service credit to be amortized from accumulated other comprehensive loss into net periodic benefit cost during 2014 is expected to be $100 thousand for pension plans. The amounts to be amortized from accumulated other comprehensive loss into net periodic benefit cost during 2014 related to postretirement benefits are not material.
Changes in the benefit obligations and assets of the foreign defined benefit plans follow.
		Years Ended December 31,
		Pension Benefits								Postretirement Benefits
(in thousands)		2013				2012				2013			2012
Change in benefit obligation
Benefit obligation at beginning of year		$	135,498			$	112,656			$	2,743		$	2,596
Service cost		5,518				4,314				26			28
Interest cost		5,405				5,345				108			111
Plan amendments		0				2,014				0			0
Employee contributions		780				687				0			0
Actuarial net loss		5,256				11,572				1			142
Benefits paid		(5,512		)		(5,225		)		(216		)	(203		)
Settlement and curtailment gains		(509		)		(910		)		(164		)	0
Foreign currency translation		3,247				5,045				(177		)	69
Benefit obligation at end of year		149,683				135,498				2,321			2,743
Change in plan assets
Fair value of plan assets at beginning of year		126,392				108,177				0			0
Actual return on plan assets		12,680				9,714				0			0
Employer contributions		7,871				7,957				216			203
Employee contributions		780				687				0			0
Benefits paid		(5,512		)		(5,225		)		(216		)	(203		)
Foreign currency translation		2,572				5,082				0			0
Fair value of plan assets at end of year		144,783				126,392				0			0
Funded status		$	(4,900	)		$	(9,106	)		$	(2,321	)	$	(2,743	)
Amounts recognized in the Consolidated Balance Sheets
Noncurrent assets		$	15,719			$	12,710			$	0		$	0
Current liabilities		(418		)		(394		)		(150		)	(149		)
Noncurrent liabilities		(20,201		)		(21,422		)		(2,171		)	(2,594		)
		$	(4,900	)		$	(9,106	)		$	(2,321	)	$	(2,743	)
Amounts recognized in accumulated other comprehensive loss
Actuarial net loss		$	36,820			$	39,156			$	433		$	627
Prior service credit		(241		)		(61		)		0			0
Transition obligation		10				10				2			232
		$	36,589			$	39,105			$	435		$	859
The accumulated benefit obligation for all foreign defined benefit pension plans was $134 million at December 31, 2013 and $118 million at December 31, 2012.
The fair market value of plan assets exceeded both the accumulated benefit obligation and projected benefit obligation for the United Kingdom, Canadian Hourly, and the Canadian Salary plans at year-end 2013. The net asset position of the United Kingdom, Canadian Hourly, and Canadian Salary plans are included in prepaid pension cost on the Consolidated Balance Sheets at December 31, 2013. The accumulated benefit obligation and projected benefit obligation exceeded the fair market value of plan assets for the German, Belgian, and Mexican plans at December 31, 2013. The accrued benefit cost of these plans is included in other noncurrent liabilities on the Consolidated Balance Sheets. As the German plan is unfunded, a portion of the accrued benefit cost for the German plan is included in current liabilities at year-end 2013 reflecting the expected benefit payments related to the plan for the following year.
The fair market value of plan assets exceeded both the accumulated benefit obligation and projected benefit obligation for the United Kingdom and the Canadian Salary plans at year-end 2012. The net asset position of the United Kingdom plan and Canadian Salary plans are included in prepaid pension cost on the Consolidated Balance Sheets at December 31, 2012. The accumulated benefit obligation and projected benefit obligation exceeded the fair market value of plan assets for the German, Belgian, Canadian Hourly, and Mexican plans at December 31, 2012. The accrued benefit cost of these plans is included in other noncurrent liabilities on the Consolidated Balance Sheets. As the German plan is unfunded, a portion of the accrued benefit cost for the German plan is included in current liabilities at year-end 2012 reflecting the expected benefit payments related to the plan for the following year.
The first table below shows information on foreign plans with the accumulated benefit obligation in excess of plan assets. The second table shows information on plans with the projected benefit obligation in excess of plan assets.
		December 31,
(in thousands)		2013				2012
Plans with the accumulated benefit obligation in excess of the fair market value of plan assets
Projected benefit obligation		$	31,827			$	35,983
Accumulated benefit obligation		22,031				25,322
Fair market value of plan assets		11,208				14,167
		December 31,
(in thousands)		2013				2012
Plans with the projected benefit obligation in excess of the fair market value of plan assets
Projected benefit obligation		$	31,827			$	35,983
Fair market value of plan assets		11,208				14,167
Assumptions—The information in the table below provides the weighted-average assumptions used to calculate the results of our foreign defined benefit plans.
		Pension Benefits									Postretirement Benefits
		2013			2012			2011			2013		2012			2011
Weighted-average assumptions used to determine net periodic benefit cost for the years ended December 31,
Discount rate		4.03	%		4.65	%		5.16	%		4	%	4.25	%		5	%
Expected long-term rate of return on plan assets		5.56	%		5.46	%		5.92	%
Rate of projected compensation increase		4.26	%		4.24	%		4.63	%
Weighted-average assumptions used to determine benefit obligations at December 31,
Discount rate		4.01	%		4.03	%		4.65	%		4.5	%	4	%		4.25	%
Rate of projected compensation increase		4.25	%		4.26	%		4.24	%
The actuarial assumptions used by the various foreign locations are based upon the circumstances of each particular country and pension plan. The factors impacting the determination of the long-term rate of return for a particular foreign pension plan include the market conditions within a particular country, as well as the investment strategy and asset allocation of the specific plan.
Assumed health care cost trend rates are shown in the table below.
		December 31,
		2013			2012
Health care cost trend rate assumed for next year		5	%		5	%
Rate to which the cost trend rate is assumed to decline (the ultimate trend rate)		5	%		5	%
Year that the rate reached the ultimate trend rate		2012			2012
A one-percentage point change in the assumed health care cost trend rate would have the following effects:
(in thousands)		1%				1%
		Increase				Decrease
Effect on accumulated postretirement benefit obligation as of December 31, 2013		$	171			$	(138	)
Effect on net periodic postretirement benefit cost in 2013		17				(13		)
Plan Assets—Pension plan assets vary by foreign location and plan. Assets are held and distributed by trusts and, depending upon the foreign location and plan, consist primarily of equity securities, corporate and government debt securities, cash, and insurance contracts. The combined weighted-average target allocation of our foreign pension plans is 54% in equities, 34% in debt securities, 8% in insurance contracts, and 4% in a pooled investment property fund.
While the pension obligation is long-term in nature for each of our foreign plans, the investment strategies followed by each plan vary to some degree based upon the laws of a particular country, as well as the provisions of the specific pension trust. The United Kingdom and Canadian plans are invested predominantly in equity securities and debt securities. The funds of these plans are managed by various trustees and investment companies whose performance is reviewed throughout the year. The Belgian plan is invested in an insurance contract. The Mexican plan is invested in various mutual funds. The German plan has no assets.
There are no significant concentrations of risk within plan assets, nor do the equity securities include any NewMarket common stock for any year presented. The benefits of the Canadian postretirement benefit plan are paid through an insurance contract.
The following table provides information on the fair value of our foreign pension plans assets, as well as the related level within the fair value hierarchy.
		31-Dec-13															31-Dec-12
						Fair Value Measurements Using														Fair Value Measurements Using
(in thousands)		Fair Value				Level 1				Level 2			Level 3				Fair Value			Level 1			Level 2		Level 3
Pension Plans
Equity securities:
U.S. companies		$	9,068			$	9,068			$	0		$	0			$	6,927		$	6,927		$	0	$	0
International companies		58,571				58,571				0			0				48,244			48,244			0		0
Debt securities—corporate		40,525				40,525				0			0				37,266			37,266			0		0
Debt securities—government		4,498				4,498				0			0				4,338			4,338			0		0
Mutual funds		95				95				0			0				52			52			0		0
Cash and cash equivalents		445				445				0			0				559			559			0		0
Pooled investment funds:
Equity securities—U.S. companies		1,243				0				1,243			0				888			0			888		0
Equity securities—international companies		11,692				0				11,692			0				10,908			0			10,908		0
Debt securities—corporate		932				0				932			0				693			0			693		0
Debt securities—government		1,057				0				1,057			0				901			0			901		0
Cash and cash equivalents		619				0				619			0				482			0			482		0
Property		4,925				0				4,925			0				4,409			0			4,409		0
Insurance contract		11,113				0				11,113			0				10,725			0			10,725		0
		$	144,783			$	113,202			$	31,581		$	0			$	126,392		$	97,386		$	29,006	$	0
The valuation methodologies used to develop the fair value measurements for the investments in the table above are outlined below. There have been no changes in the valuation techniques used to value the investments.
•	Equity securities are valued at the closing price reported on a national exchange.
•	Corporate and government debt securities are composed of bond funds that are priced daily.
•	Mutual funds are valued at the closing price reported on a national exchange.
•	Cash and cash equivalents are valued at cost.
•	The pooled investment funds are priced daily. The underlying assets that are invested in equity securities, as well as corporate and government debt securities, are listed on a recognized exchange. The underlying assets that are invested in property are valued monthly by an independent property management firm.
•	The insurance contracts are funds deposited with an insurance company and are stated at an amount equal to the sum of all amounts deposited less the sum of all amounts withdrawn, adjusted for investment return.
Cash Flows—For foreign pension plans, NewMarket expects to contribute $7 million to the plans in 2014. Contributions to our postretirement benefit plans are not expected to be material. The expected benefit payments for the next ten years for our foreign pension plans are shown in the table below. The expected benefit payments for the next ten years for our foreign postretirement benefit plans are not expected to be material.
(in thousands)		Expected Pension
		Benefit Payments
2014		$	4,614
2015		4,999
2016		4,138
2017		5,221
2018		4,874
2019 through 2023		27,761

Other_Income_Expense_Net

Other Income (Expense), Net	12 Months Ended
	Dec. 31, 2013
Other Nonoperating Income (Expense) [Abstract]	'
Other (Income) Expense, Net	'
	Other Income (Expense), Net
	Other income (expense), net was income of $7 million in 2013, expense of $3 million in 2012, and expense of $18 million in 2011, primarily representing a gain in 2013 and a loss in 2012 and 2011 on the Goldman Sachs interest rate swap derivative instrument recorded at fair value. See Note 15 for additional information on the interest rate swap. In 2012, the loss was partially offset by a gain related to the sale of common stock that was received in 2011 as part of a legal settlement with Innospec, which is discussed further in Note 22.

Income_Tax_Expense

Income Tax Expense	12 Months Ended
	Dec. 31, 2013
Income Tax Disclosure [Abstract]	'
Income Tax Expense	'
	Income Tax Expense
	Our income from continuing operations before income tax expense is shown in the table below.
		Years Ended December 31,
	(in thousands)	2013			2012				2011
	Income from continuing operations before income tax expense
	Domestic	$	236,114		$	227,172			$	195,780
	Foreign	105,197			110,396				105,564
		$	341,311		$	337,568			$	301,344
	Our provision for income tax expense from continuing operations is shown in the table below.
		Years Ended December 31,
	(in thousands)	2013			2012				2011
	Income tax expense from continuing operations
	Current income taxes
	Federal	$	62,547		$	69,152			$	55,397
	State	8,782			8,301				9,903
	Foreign	22,016			26,300				28,530
		93,345			103,753				93,830
	Deferred income taxes
	Federal	3,374			(3,339		)		1,111
	State	771			(428		)		181
	Foreign	1,474			310				765
		5,619			(3,457		)		2,057
	Total income tax expense from continuing operations	$	98,964		$	100,296			$	95,887
	The reconciliation of the U.S. federal statutory rate to the effective income tax rate follows:
		% of Income
		Before Income Tax Expense
		2013		2012			2011
	Federal statutory rate	35	%	35	%		35	%
	State taxes, net of federal tax	1.8		1.5			1.8
	Foreign operations	(3.6	)	(2.4	)		(2.0	)
	Employee savings plan	(0.2	)	(1.9	)		(0.2	)
	Research tax credit	(2.1	)	0			(0.7	)
	Domestic manufacturing tax benefit	(2.5	)	(2.1	)		(2.4	)
	Other items and adjustments	0.6		(0.4	)		0.3
	Effective income tax rate	29	%	29.7	%		31.8	%
	The 2013 effective rate includes the effect of the R&D tax credit for 2013 as well as all of 2012, as the legislation to extend such tax credits was retroactively signed into law in January 2013. A benefit from the R&D tax credit is also included in 2011. Certain foreign operations have a U.S. tax impact due to our election to include their earnings in our federal income tax return.
	Our deferred income tax assets and liabilities follow.
		December 31,
	(in thousands)	2013			2012
	Deferred income tax assets
	Future employee benefits	$	20,618		$	56,643
	Environmental and future shutdown reserves	6,412			6,981
	Loss on derivatives	8,251			14,305
	Trademark expenses	5,404			5,152
	Foreign currency translation adjustments	4,883			4,383
	Other	5,672			7,589
		51,240			95,053
	Deferred income tax liabilities
	Depreciation and amortization	19,135			25,623
	Intangibles	1,085			3,029
	Undistributed earnings of foreign subsidiaries	1,875			3,851
	Other	4,400			5,713
		26,495			38,216
	Net deferred income tax assets	$	24,745		$	56,837
	Reconciliation to financial statements
	Deferred income tax assets—current	$	8,267		$	8,452
	Deferred income tax assets—noncurrent	22,961			55,123
	Deferred income tax liabilities—noncurrent	6,483			6,738
	Net deferred income tax assets	$	24,745		$	56,837
	Deferred income tax liabilities - noncurrent is included in other noncurrent liabilities on our Consolidated Balance Sheets. Our deferred taxes are in a net asset position at December 31, 2013. Based on current forecast operating plans and historical profitability, we believe that we will recover nearly the full benefit of our deferred tax assets. We have recorded an immaterial valuation allowance at certain foreign subsidiaries.
	The balance of unrecognized tax benefits totaled approximately $3 million at December 31, 2013 and $2 million at December 31, 2012. The balance at December 31, 2011, and the additions and decreases in all periods presented, were not material. At December 31, 2013, $3 million of this amount if recognized, would affect our effective tax rate.
	We recognize accrued interest and penalties associated with uncertain tax positions as part of income tax expense on our Consolidated Statements of Income. We expect the amount of unrecognized tax benefits to change in the next twelve months; however, we do not expect the change to have a material impact on our financial statements.
	Our U.S. subsidiaries file a U.S. federal consolidated income tax return. We are currently under examination by the Internal Revenue Service for 2011 and by various U.S. state and foreign jurisdictions. We are no longer subject to U.S. federal income tax examinations for years before 2010. Foreign and U.S. state jurisdictions have statutes of limitations generally ranging from three to five years. Years still open to examination by foreign tax authorities in major jurisdictions include: the United Kingdom (2010 and forward); Singapore (2006 and forward); Japan (2009 and forward); Belgium (2011 and forward); Canada (2006 and forward); and Brazil (2009 and forward).

Other_Comprehensive_Income_Los

Other Comprehensive Income (Loss) and Accumulated Other Comprehensive Loss	12 Months Ended
	Dec. 31, 2013
Accumulated Other Comprehensive Income (Loss), Net of Tax [Abstract]	'
Other Comprehensive Income (Loss) and Accumulated Other Comprehensive Loss	'
	Other Comprehensive Income (Loss) and Accumulated Other Comprehensive Loss
	The balances of, and changes in, the components of accumulated other comprehensive loss, net of tax, consist of the following:
	(in thousands)	Pension Plans			Derivative Instruments			Foreign Currency Translation Adjustments			Marketable Securities			Accumulated Other
		and Other Postretirement Benefits												Comprehensive Income (Loss)
	Balance at December 31, 2010	$	(51,562	)	$	(4,151	)	$	(18,107	)	$	0		$	(73,820	)
	Other comprehensive income (loss) before reclassifications	(27,577		)	(1,605		)	163			364			(28,655		)
	Amounts reclassified from accumulated other comprehensive loss	2,723			1,020			0			0			3,743
	Other comprehensive income (loss)	(24,854		)	(585		)	163			364			(24,912		)
	Balance at December 31, 2011	(76,416		)	(4,736		)	(17,944		)	364			(98,732		)
	Other comprehensive income (loss) before reclassifications	(24,291		)	(330		)	7,567			676			(16,378		)
	Amounts reclassified from accumulated other comprehensive loss	4,568			893			0			(1,040		)	4,421
	Other comprehensive income (loss)	(19,723		)	563			7,567			(364		)	(11,957		)
	Balance at December 31, 2012	(96,139		)	(4,173		)	(10,377		)	0			(110,689		)
	Other comprehensive income (loss) before reclassifications	45,327			0			(5,216		)	0			40,111
	Amounts reclassified from accumulated other comprehensive loss	6,319			4,173			0			0			10,492
	Other comprehensive income (loss)	51,646			4,173			(5,216		)	0			50,603
	Balance at December 31, 2013	$	(44,493	)	$	0		$	(15,593	)	$	0		$	(60,086	)
	The following table illustrates the amounts, net of tax, reclassified out of each component of accumulated other comprehensive loss and their location within the respective line items on the Consolidated Statements of Income.
	(in thousands)	Amount Reclassified from Accumulated Other Comprehensive Loss
	Accumulated Other Comprehensive Loss Component	Years Ended December 31,									Affected Line Item on the Consolidated Statements of Income
		2013			2012			2011
	Pension plans and other postretirement benefits:
	Amortization of prior service cost	$	97		$	27		$	260		(a)
	Amortization of actuarial net loss	5,404			4,066			2,423			(a)
	Settlements and curtailments	785			436			0			(a)
	Amortization of transition obligation	33			39			40			(a)
	Total pension plans and other postretirement benefits	6,319			4,568			2,723
	Derivative instruments:
	Amortization of mortgage loan interest rate swap	1,666			841			968			Income from operations of discontinued business, net of tax
	Amortization of construction loan interest rate swap	2,507			52			52			Discontinued operations
	Total derivative instruments	4,173			893			1,020
	Marketable securities	0			(1,040		)	0			Other income (expense), net
	Total reclassifications for the period	$	10,492		$	4,421		$	3,743
	(a) These components of accumulated other comprehensive loss are included in the computation of net periodic benefit cost. See Note 18 for further information.
	In 2013, $2.5 million of the amount reported in the table above for the amortization of construction loan interest rate swap is a component of gain on sale of discontinued business, net of tax. The remaining amounts related to derivative instruments for all periods are components of income from operations of discontinued business, net of tax.

Segment_and_Geographic_Area_In

Segment and Geographic Area Information	12 Months Ended
	Dec. 31, 2013
Segment Reporting [Abstract]	'
Segment and Geographic Area Information	'
	Segment and Geographic Area Information
	Segment Information—The tables below show our consolidated segment results. The “All other” category includes the operations of the TEL business, as well as certain contract manufacturing performed by Ethyl.
	The accounting policies of the segments are the same as those described in Note 1. We evaluate the performance of the petroleum additives business based on segment operating profit. NewMarket Services departments and other expenses are billed to Afton and Ethyl based on the services provided under the holding company structure. Depreciation on segment property, plant, and equipment, as well as amortization of segment intangible assets, are included in segment operating profit. No transfers occurred between the petroleum additives segment and the “All other” category during the periods presented. The table below reports revenue and operating profit by segment, as well as a reconciliation to income from continuing operations before income tax expense, for the last three years.
			Years Ended December 31,
	(in thousands)		2013			2012			2011
	Consolidated revenue
	Petroleum additives
	Lubricant additives		$	1,829,681		$	1,750,107		$	1,684,561
	Fuel additives		441,578			450,673			441,883
	Total		2,271,259			2,200,780			2,126,444
	All other		9,096			11,098			11,683
	Consolidated revenue (a)		$	2,280,355		$	2,211,878		$	2,138,127
	Segment operating profit
	Petroleum additives:
	Petroleum additives before gain on legal settlement, net		$	375,291		$	371,964		$	309,626
	Gain on legal settlement, net (b)		0			0			38,656
	Total petroleum additives		375,291			371,964			348,282
	All other		(1,150		)	6,272			2,861
	Segment operating profit		374,141			378,236			351,143
	Corporate, general, and administrative expenses		(22,508		)	(20,192		)	(16,709		)
	Interest and financing expenses, net		(17,796		)	(8,435		)	(14,151		)
	Gain (loss) on interest rate swap agreement (c)		6,690			(5,346		)	(17,516		)
	Loss on early extinguishment of debt (d)		0			(9,092		)	0
	Other income (expense), net		784			2,397			(1,423		)
	Income from continuing operations before income tax expense		$	341,311		$	337,568		$	301,344
	(a)	Net sales to one customer of our petroleum additives segment exceeded 10% of consolidated revenue in 2013, 2012, and 2011. Sales to Shell amounted to $253 million (11% of consolidated revenue) in 2013, $252 million (11% of consolidated revenue) in 2012, and $246 million (11% of consolidated revenue) in 2011. These sales represent a wide range of products sold to this customer in multiple regions of the world.
	(b)	For 2011, the petroleum additives segment included a net gain of $39 million related to a legal settlement. On September 13, 2011, we signed a settlement agreement with Innospec Inc. and its subsidiaries, Alcor Chemie Vertriebs GmbH and Innospec Ltd. (collectively, Innospec) which provided for mutual releases of the parties and dismissal of the actions with prejudice. Under the settlement agreement, Innospec agreed to pay NewMarket an aggregate amount of approximately $45 million in a combination of cash, a promissory note, and stock, of which $25 million was paid in cash on September 20, 2011 and $5 million was paid in the form of 195,313 shares of unregistered Innospec Inc. common stock. Fifteen million dollars is payable in three equal annual installments of $5 million under the promissory note, which bears simple interest at 1% per year. The first two installments were paid in September 2012 and September 2013. The gain is net of expenses related to the settlement of the lawsuit.
	(c)	The gain (loss) on interest rate swap agreement represents the change, since the beginning of the reporting period, in the fair value of an interest rate swap which we entered into on June 25, 2009. We are not using hedge accounting to record the interest rate swap, and accordingly, any change in the fair value is immediately recognized in earnings.
	(d)	In March 2012, we entered into a $650 million five-year unsecured revolving credit facility. During 2012, we used a portion of the $650 million revolving credit facility to fund the early redemption of all of our then outstanding 7.125% senior notes, as well as to repay the outstanding principal amount on the mortgage loan. As a result, we recognized a loss on early extinguishment of debt of $10 million during 2012 from accelerated amortization of financing fees associated with the prior revolving credit facility, the 7.125% senior notes, and the mortgage loan, as well as costs associated with redeeming the 7.125% senior notes prior to maturity. Of the loss on early extinguishment of debt, $1 million is included as a component of income from operations of discontinued business, net of tax.
	The following table shows asset information by segment and the reconciliation to consolidated assets. Segment assets consist of accounts receivable, inventory, and long-lived assets. Long-lived assets in the table below include property, plant, and equipment, net of depreciation.
			December 31,
	(in thousands)		2013			2012			2011
	Segment assets
	Petroleum additives		$	889,944		$	873,277		$	854,134
	All other		12,170			14,018			14,125
			902,114			887,295			868,259
	Cash and cash equivalents		238,703			89,129			50,370
	Other accounts receivable (a)		1,960			11,806			173
	Deferred income taxes		31,228			63,575			43,066
	Prepaid expenses and other current assets		32,979			18,173			36,943
	Non-segment property, plant, and equipment, net (a)		28,242			122,350			125,678
	Prepaid pension cost		55,087			12,710			11,494
	Deferred charges and other assets (a)		36,961			59,210			55,679
	Total assets		$	1,327,274		$	1,264,248		$	1,191,662
	Additions to long-lived assets
	Petroleum additives		$	54,187		$	36,873		$	50,760
	All other		7			0			30
	Corporate		4,282			1,880			2,725
	Total additions to long-lived assets		$	58,476		$	38,753		$	53,515
	Depreciation and amortization
	Petroleum additives		$	38,750		$	36,197		$	36,604
	All other (b)		4,683			4,959			4,203
	Corporate		2,711			2,233			2,545
	Total depreciation and amortization		$	46,144		$	43,389		$	43,352
	(a)	Amounts previously reported for 2012 and 2011 have been reclassified to include the assets of the discontinued operation resulting from the July 2013 sale of the assets of Foundry Park I.
	(b)	This amount includes depreciation and amortization expense of Foundry Park I, which was $5 million for 2013, $5 million for 2012, and $4 million for 2011. These amounts are included in income from operations of discontinued business, net of tax in the Consolidated Statements of Income.
	Geographic Area Information - The table below reports revenue, total assets, and long-lived assets by geographic area. Long-lived assets in the table below include property, plant, and equipment, net of depreciation. No country, except for the United States, exceeded 10% of consolidated revenue or long-lived assets in any year. However, because our foreign operations are significant to our overall business, we are presenting revenue in the table below by the major regions in which we operate. NewMarket assigns revenues to geographic areas based on the location to which the product was shipped to a third party.
			December 31,
	(in thousands)		2013			2012			2011
	Consolidated revenue
	United States		$	806,462		$	799,754		$	756,284
	Europe, Middle East, Africa, India		759,918			692,132			727,632
	Asia Pacific		462,080			440,589			405,534
Other foreign		251,895			279,403			248,677
Consolidated revenue		$	2,280,355		$	2,211,878		$	2,138,127
Total assets
United States		$	637,386		$	653,069		$	642,976
Foreign		689,888			611,179			548,686
Total assets		$	1,327,274		$	1,264,248		$	1,191,662
Long-lived assets
United States		$	165,944		$	255,150		$	256,998
Foreign		119,092			103,221			95,968
Total long-lived assets		$	285,036		$	358,371		$	352,966

Selected_Quarterly_Consolidate

Selected Quarterly Consolidated Financial Data (unaudited)	12 Months Ended
	Dec. 31, 2013
Selected Quarterly Financial Information [Abstract]	'
Selected Quarterly Consolidated Financial Data (unaudited)	'
	Selected Quarterly Consolidated Financial Data (unaudited)
	(in thousands, except per-share amounts)	First		Second			Third		Fourth
		Quarter		Quarter			Quarter		Quarter
	2013
	Net sales	$	559,750	$	583,779		$	580,455	$	556,371
	Gross profit	168,407		169,428			163,823		151,638
	Income from continuing operations	66,941		64,384			57,021		54,001
	Discontinued operations	894		(374		)	21,875		0
	Net income	$	67,835	$	64,010		$	78,896	$	54,001
	Earnings per share - basic and diluted:
	Income from continuing operations	$	5	$	4.84		$	4.29	$	4.08
	Income from discontinued operations	0.07		(0.03		)	1.65		0
	Net income	$	5.07	$	4.81		$	5.94	$	4.08
	2012	First		Second			Third		Fourth
		Quarter		Quarter			Quarter		Quarter
	Net sales	$	559,821	$	587,548		$	551,187	$	513,322
	Gross profit	167,746		163,609			160,269		138,861
	Income from continuing operations	66,147		55,063			63,823		52,239
	Discontinued operations	400		205			892		824
	Net income	$	66,547	$	55,268		$	64,715	$	53,063
	Earnings per share - basic and diluted
	Income from continuing operations	$	4.93	$	4.11		$	4.76	$	3.88
	Income from discontinued operations	0.03		0.01			0.07		0.06
	Net income	$	4.96	$	4.12		$	4.83	$	3.94

Consolidating_Financial_Inform

Consolidating Financial Information	12 Months Ended
	Dec. 31, 2013
Consolidating Financial Information [Abstract]	'
Consolidating Financial Information	'
	.	Consolidating Financial Information
	The 4.10% senior notes are guaranteed on a senior unsecured basis by certain of our domestic subsidiaries that guarantee our obligations under the revolving credit facility and any of our other indebtedness (Guarantor Subsidiaries). The subsidiary guarantees are joint and several obligations of the Guarantor Subsidiaries. The indenture governing the 4.10% senior notes includes a provision which allows for a Guarantor Subsidiary to be released of its obligations under the subsidiary guarantee under certain conditions. Those conditions include the sale or other disposition of all or substantially all of the Guarantor Subsidiary's assets in compliance with the indenture and the release or discharge of a Guarantor Subsidiary from its obligations as a guarantor under our revolving credit facility and all of our other indebtedness. During 2013, certain subsidiaries that had been Guarantor Subsidiaries were released from their obligations under the revolving credit facility, and therefore were released as a Subsidiary Guarantor under the 4.10% senior notes. The Guarantor Subsidiaries and the subsidiaries that do not guarantee the 4.10% senior notes (the Non-Guarantor Subsidiaries) are 100% owned by NewMarket Corporation (the Parent Company). The current Guarantor Subsidiaries consist of the following:
	Ethyl Corporation	Afton Chemical Corporation
	NewMarket Services Corporation	Afton Chemical Additives Corporation
	We conduct all of our business through and derive essentially all of our income from our subsidiaries. Therefore, our ability to make payments on the 4.10% senior notes or other obligations is dependent on the earnings and the distribution of funds from our subsidiaries.
	The following sets forth the Consolidating Statements of Income and Comprehensive Income for the years ended December 31, 2013, December 31, 2012, and December 31, 2011; Consolidating Balance Sheets as of December 31, 2013 and December 31, 2012; and Condensed Consolidating Statements of Cash Flows for the years ended December 31, 2013, December 31, 2012, and December 31, 2011 for the Parent Company, the Guarantor Subsidiaries, and the Non-Guarantor Subsidiaries. The financial information is based on our understanding of the SEC's interpretation and application of Rule 3-10 of the SEC Regulation S-X. Prior periods have been revised to reflect the change in Guarantor Subsidiaries and Non-Guarantor subsidiaries.
	The financial information may not necessarily be indicative of results of operations or financial position had the Guarantor Subsidiaries or Non-Guarantor Subsidiaries operated as independent entities. The Parent Company accounts for investments in these subsidiaries using the equity method.
	NewMarket Corporation and Subsidiaries
	Consolidating Statements of Income and Comprehensive Income
	Year Ended December 31, 2013
	(in thousands)		Parent Company			Guarantor Subsidiaries			Non-Guarantor Subsidiaries			Total Consolidating Adjustments			Consolidated
	Net sales		$	0		$	896,593		$	1,383,762		$	0		$	2,280,355
	Cost of goods sold		0			457,698			1,169,361			0			1,627,059
	Gross profit		0			438,895			214,401			0			653,296
	Selling, general, and administrative expenses		6,869			91,230			66,779			0			164,878
	Research, development, and testing expenses		0			95,114			41,459			0			136,573
	Operating (loss) profit		(6,869		)	252,551			106,163			0			351,845
	Interest and financing expenses, net		18,303			(3,631		)	3,124			0			17,796
	Other income (expense), net		6,754			38			470			0			7,262
	(Loss) income from continuing operations before income taxes and equity income of subsidiaries		(18,418		)	256,220			103,509			0			341,311
	Income tax (benefit) expense		(5,476		)	80,958			23,482			0			98,964
	Equity income of subsidiaries		277,684			0			0			(277,684		)	0
	Income from continuing operations		264,742			175,262			80,027			(277,684		)	242,347
	Discontinued operations:
	Gain on sale of discontinued business, net of tax		0			0			21,855			0			21,855
	Income from operations of discontinued business, net of tax		0			0			540			0			540
	Net income		264,742			175,262			102,422			(277,684		)	264,742
	Other comprehensive income (loss)		50,603			11,791			(745		)	(11,046		)	50,603
	Comprehensive income		$	315,345		$	187,053		$	101,677		$	(288,730	)	$	315,345
	NewMarket Corporation and Subsidiaries
	Consolidating Statements of Income and Comprehensive Income
	Year Ended December 31, 2012
	(in thousands)		Parent Company			Guarantor Subsidiaries			Non-Guarantor Subsidiaries			Total Consolidating Adjustments			Consolidated
	Net sales		$	0		$	905,043		$	1,306,835		$	0		$	2,211,878
	Cost of goods sold		0			443,896			1,137,497			0			1,581,393
	Gross profit		0			461,147			169,338			0			630,485
	Selling, general, and administrative expenses		6,089			115,450			32,668			0			154,207
	Research, development, and testing expenses		0			86,494			31,351			0			117,845
	Operating (loss) profit		(6,089		)	259,203			105,319			0			358,433
	Interest and financing expenses, net		8,432			(3,842		)	3,845			0			8,435
	Loss on early extinguishment of debt		9,092			0			0			0			9,092
	Other income (expense), net		(5,301		)	1,690			273			0			(3,338		)
	(Loss) income from continuing operations before income taxes and equity income of subsidiaries		(28,914		)	264,735			101,747			0			337,568
	Income tax (benefit) expense		(17,984		)	93,205			25,075			0			100,296
	Equity income of subsidiaries		250,523			0			0			(250,523		)	0
	Income from continuing operations		239,593			171,530			76,672			(250,523		)	237,272
	Income from operations of discontinued business, net of tax		0			0			2,321			0			2,321
	Net income		239,593			171,530			78,993			(250,523		)	239,593
	Other comprehensive income (loss)		(11,957		)	860			(771		)	(89		)	(11,957		)
	Comprehensive income		$	227,636		$	172,390		$	78,222		$	(250,612	)	$	227,636
	NewMarket Corporation and Subsidiaries
	Consolidating Statements of Income and Comprehensive Income
	Year Ended December 31, 2011
	(in thousands)		Parent Company			Guarantor Subsidiaries			Non-Guarantor Subsidiaries			Total Consolidating Adjustments			Consolidated
	Net sales		$	0		$	836,917		$	1,301,210		$	0		$	2,138,127
	Cost of goods sold		0			457,866			1,128,279			0			1,586,145
	Gross profit		0			379,051			172,931			0			551,982
	Selling, general, and administrative expenses		6,158			106,163			39,278			0			151,599
	Research, development, and testing expenses		0			77,569			27,927			0			105,496
	Gain on legal settlement, net		0			38,656			0			0			38,656
	Operating (loss) profit		(6,158		)	233,975			105,726			0			333,543
	Interest and financing expenses, net		14,397			(3,402		)	3,156			0			14,151
	Other income (expense), net		(18,558		)	1,794			(1,284		)	0			(18,048		)
(Loss) income from continuing operations before income taxes and equity income of subsidiaries		(39,113		)	239,171			101,286			0			301,344
Income tax (benefit) expense		(15,399		)	82,049			29,237			0			95,887
Equity income of subsidiaries		230,621			0			0			(230,621		)	0
Income from continuing operations		206,907			157,122			72,049			(230,621		)	205,457
Income from operations of discontinued business, net of tax		0			0			1,450			0			1,450
Net income		206,907			157,122			73,499			(230,621		)	206,907
Other comprehensive income (loss)		(24,912		)	(5,521		)	670			4,851			(24,912		)
Comprehensive income		$	181,995		$	151,601		$	74,169		$	(225,770	)	$	181,995
NewMarket Corporation and Subsidiaries
Consolidating Balance Sheets
31-Dec-13
(in thousands)		Parent Company			Guarantor Subsidiaries			Non-Guarantor Subsidiaries			Total Consolidating Adjustments			Consolidated
ASSETS
Cash and cash equivalents		$	1,038		$	102,205		$	135,460		$	0		$	238,703
Trade and other accounts receivable, net		1,512			108,908			199,431			(4		)	309,847
Amounts due from affiliated companies		0			139,710			77,098			(216,808		)	0
Inventories		0			115,442			192,076			0			307,518
Deferred income taxes		2,600			4,919			748			0			8,267
Prepaid expenses and other current assets		13,055			17,886			2,043			0			32,984
Total current assets		18,205			489,070			606,856			(216,812		)	897,319
Amounts due from affiliated companies		0			113,076			8,025			(121,101		)	0
Property, plant, and equipment, at cost		0			692,024			293,172			0			985,196
Less accumulated depreciation and amortization		0			555,805			144,355			0			700,160
Net property, plant, and equipment		0			136,219			148,817			0			285,036
Investment in consolidated subsidiaries		955,560			0			0			(955,560		)	0
Prepaid pension cost		23,276			16,092			15,719			0			55,087
Deferred income taxes		20,999			0			7,984			(6,022		)	22,961
Intangibles (net of amortization) and goodwill		0			17,036			6,283			0			23,319
Deferred charges and other assets		33,257			9,014			1,281			0			43,552
Total assets		$	1,051,297		$	780,507		$	794,965		$	(1,299,495	)	$	1,327,274
LIABILITIES AND SHAREHOLDERS' EQUITY
Accounts payable		$	6		$	86,649		$	47,477		$	0		$	134,132
Accrued expenses		10,788			46,401			20,803			0			77,992
Dividends payable		12,996			0			0			0			12,996
Amounts due to affiliated companies		23,183			77,098			116,527			(216,808		)	0
Income taxes payable		0			0			11,423			(4		)	11,419
Other current liabilities		0			7,828			3,247			0			11,075
Total current liabilities		46,973			217,976			199,477			(216,812		)	247,614
Long-term debt		349,467			0			0			0			349,467
Amounts due to affiliated companies		0			8,025			113,076			(121,101		)	0
Other noncurrent liabilities		82,409			41,014			40,344			(6,022		)	157,745
Total liabilities		478,849			267,015			352,897			(343,935		)	754,826
Shareholders' equity:
Common stock and paid-in capital		0			260,776			126,661			(387,437		)	0
Accumulated other comprehensive loss		(60,086		)	(5,786		)	(40,360		)	46,146			(60,086		)
Retained earnings		632,534			258,502			355,767			(614,269		)	632,534
Total shareholders' equity		572,448			513,492			442,068			(955,560		)	572,448
Total liabilities and shareholders' equity		$	1,051,297		$	780,507		$	794,965		$	(1,299,495	)	$	1,327,274
NewMarket Corporation and Subsidiaries
Consolidating Balance Sheets
31-Dec-12
(in thousands)		Parent Company			Guarantor Subsidiaries			Non-Guarantor Subsidiaries			Total Consolidating Adjustments			Consolidated
ASSETS
Cash and cash equivalents		$	5,001		$	3,956		$	80,172		$	0		$	89,129
Trade and other accounts receivable, net		4,347			113,131			179,577			0			297,055
Amounts due from affiliated companies		0			142,125			97,784			(239,909		)	0
Inventories		0			117,638			205,036			0			322,674
Deferred income taxes		2,555			5,062			835			0			8,452
Prepaid expenses and other current assets		65			16,248			1,872			0			18,185
Total current assets		11,968			398,160			565,276			(239,909		)	735,495
Amounts due from affiliated companies		58,935			107,236			0			(166,171		)	0
Property, plant, and equipment, at cost		0			664,912			406,055			0			1,070,967
Less accumulated depreciation and amortization		0			536,700			175,896			0			712,596
Net property, plant, and equipment		0			128,212			230,159			0			358,371
Investment in consolidated subsidiaries		866,676			0			0			(866,676		)	0
Prepaid pension cost		0			0			12,710			0			12,710
Deferred income taxes		53,057			0			6,477			(4,411		)	55,123
Intangibles (net of amortization) and goodwill		0			23,785			6,757			0			30,542
Deferred charges and other assets		46,286			15,670			10,051			0			72,007
Total assets		$	1,036,922		$	673,063		$	831,430		$	(1,277,167	)	$	1,264,248
LIABILITIES AND SHAREHOLDERS' EQUITY
Accounts payable		$	206		$	75,239		$	43,853		$	0		$	119,298
Accrued expenses		8,366			50,763			19,932			0			79,061
Amounts due to affiliated companies		63,021			93,330			83,558			(239,909		)	0
Income taxes payable		0			1,214			8,810			0			10,024
Other current liabilities		0			3,906			4,382			0			8,288
Total current liabilities		71,593			224,452			160,535			(239,909		)	216,671
Long-term debt		424,407			0			0			0			424,407
Amounts due to affiliated companies		0			0			166,171			(166,171		)	0
Other noncurrent liabilities		138,717			44,755			41,904			(4,411		)	220,965
Total liabilities		634,717			269,207			368,610			(410,491		)	862,043
Shareholders' equity:
Common stock and paid-in capital		721			260,840			217,407			(478,247		)	721
Accumulated other comprehensive loss		(110,689		)	(17,578		)	(39,612		)	57,190			(110,689		)
Retained earnings		512,173			160,594			285,025			(445,619		)	512,173
Total shareholders' equity		402,205			403,856			462,820			(866,676		)	402,205
Total liabilities and shareholders' equity		$	1,036,922		$	673,063		$	831,430		$	(1,277,167	)	$	1,264,248
NewMarket Corporation and Subsidiaries
Condensed Consolidating Statements of Cash Flows
Year Ended December 31, 2013
(in thousands)		Parent Company			Guarantor Subsidiaries			Non-Guarantor Subsidiaries			Total Consolidating Adjustments			Consolidated
Cash provided from (used in) operating activities		$	149,278		$	(8,448	)	$	83,832		$	53,272		$	277,934
Cash flows from investing activities:
Capital expenditures		0			(29,583		)	(28,893		)	0			(58,476		)
Proceeds from sale of discontinued business		0			0			140,011			0			140,011
Deposits for interest rate swap		(12,514		)	0			0			0			(12,514		)
Return of deposits for interest rate swap		24,370			0			0			0			24,370
Return of investment in subsidiary		45,174			0			0			(45,174		)	0
Other, net		(4,927		)	0			0			0			(4,927		)
Cash provided from (used in) investing activities		52,103			(29,583		)	111,118			(45,174		)	88,464
Cash flows from financing activities:
Net (repayments) borrowings under revolving credit facility		(75,000		)	0			0			0			(75,000		)
Net (repayments) borrowings under lines of credit		0			0			(1,135		)	0			(1,135		)
Dividends paid		(50,368		)	(86,585		)	(77,978		)	164,563			(50,368		)
Debt issuance costs		(1,145		)	0			0			0			(1,145		)
Repurchases of common stock		(92,195		)	0			0			0			(92,195		)
Issuance of intercompany note payable, net		0			(14,328		)	14,328			0			0
Repayment of intercompany note payable, net		58,935			18,961			(77,896		)	0			0
Financing from affiliated companies		(45,571		)	218,232			0			(172,661		)	0
Cash provided from (used in) financing activities		(205,344		)	136,280			(142,681		)	(8,098		)	(219,843		)
Effect of foreign exchange on cash and cash equivalents		0			0			3,019			0			3,019
(Decrease) increase in cash and cash equivalents		(3,963		)	98,249			55,288			0			149,574
Cash and cash equivalents at beginning of year		5,001			3,956			80,172			0			89,129
Cash and cash equivalents at end of year		$	1,038		$	102,205		$	135,460		$	0		$	238,703
NewMarket Corporation and Subsidiaries
Condensed Consolidating Statements of Cash Flows
Year Ended December 31, 2012
(in thousands)		Parent Company			Guarantor Subsidiaries			Non-Guarantor Subsidiaries			Total Consolidating Adjustments			Consolidated
Cash provided from (used in) operating activities		$	320,504		$	140,082		$	64,015		$	(251,790	)	$	272,811
Cash flows from investing activities:
Capital expenditures		0			(22,308		)	(16,445		)	0			(38,753		)
Deposits for interest rate swap		(22,913		)	0			0			0			(22,913		)
Return of deposits for interest rate swap		21,260			0			0			0			21,260
Other, net		(4,683		)	6,303			0			0			1,620
Cash provided from (used in) investing activities		(6,336		)	(16,005		)	(16,445		)	0			(38,786		)
Cash flows from financing activities:
Net (repayments) borrowings under revolving credit facility		53,000			0			0			0			53,000
Issuance of 4.10% senior notes		349,405			0			0			0			349,405
Repayment of 7.125% senior notes		(150,000		)	0			0			0			(150,000		)
Repayment of Foundry Park I mortgage loan		0			0			(63,544		)	0			(63,544		)
Net (repayments) borrowings under lines of credit		0			0			(3,641		)	0			(3,641		)
Dividends paid		(375,681		)	(344,584		)	(7,722		)	352,306			(375,681		)
Debt issuance costs		(6,485		)	0			0			0			(6,485		)
Issuance of intercompany note payable, net		(65,500		)	0			65,500			0			0
Repayment of intercompany note payable, net		6,565			0			(6,565		)	0			0
Financing from affiliated companies		(120,488		)	221,004			0			(100,516		)	0
Cash provided from (used in) financing activities		(309,184		)	(123,580		)	(15,972		)	251,790			(196,946		)
Effect of foreign exchange on cash and cash equivalents		0			0			1,680			0			1,680
Increase in cash and cash equivalents		4,984			497			33,278			0			38,759
Cash and cash equivalents at beginning of year		17			3,459			46,894			0			50,370
Cash and cash equivalents at end of year		$	5,001		$	3,956		$	80,172		$	0		$	89,129
NewMarket Corporation and Subsidiaries
Condensed Consolidating Statements of Cash Flows
Year Ended December 31, 2011
(in thousands)		Parent Company			Guarantor Subsidiaries			Non-Guarantor Subsidiaries			Total Consolidating Adjustments			Consolidated
Cash provided from (used in) operating activities		$	15,179		$	(1,763	)	$	60,612		$	110,570		$	184,598
Cash flows from investing activities:
Capital expenditures		0			(24,147		)	(29,368		)	0			(53,515		)
Deposits for interest rate swap		(46,467		)	0			0			0			(46,467		)
Return of deposits for interest rate swap		33,600			0			0			0			33,600
Other, net		(4,574		)	0			0			0			(4,574		)
Cash provided from (used in) investing activities		(17,441		)	(24,147		)	(29,368		)	0			(70,956		)
Cash flows from financing activities:
Net (repayments) borrowings under revolving credit facility		18,000			0			0			0			18,000
Repayment of Foundry Park I mortgage loan		0			0			(2,731		)	0			(2,731		)
Net (repayments) borrowings under lines of credit		0			0			6,529			0			6,529
Dividends paid		(32,588		)	0			(32,748		)	32,748			(32,588		)
Debt issuance costs		(3,233		)	0			0			0			(3,233		)
Repurchases of common stock		(98,093		)	0			0			0			(98,093		)
Issuance of intercompany note payable, net		0			(23,298		)	23,298			0			0
Repayment of intercompany note payable, net		0			24,000			(24,000		)	0			0
Financing from affiliated companies		118,106			25,212			0			(143,318		)	0
Other, net		70			958			0			0			1,028
Cash provided from (used in) financing activities		2,262			26,872			(29,652		)	(110,570		)	(111,088		)
Effect of foreign exchange on cash and cash equivalents		0			0			(1,376		)	0			(1,376		)
Increase in cash and cash equivalents		0			962			216			0			1,178
Cash and cash equivalents at beginning of year		17			2,497			46,678			0			49,192
Cash and cash equivalents at end of year		$	17		$	3,459		$	46,894		$	0		$	50,370

Summary_of_Significant_Account1

Summary of Significant Accounting Policies (Policy)	12 Months Ended
	Dec. 31, 2013
Accounting Policies [Abstract]	'
Consolidation	'
	Consolidation—Our consolidated financial statements include the accounts of NewMarket Corporation and its subsidiaries. All intercompany transactions are eliminated upon consolidation. References to "we," "us," "our," and "NewMarket" are to NewMarket Corporation and its consolidated subsidiaries, unless the context indicates otherwise.
	NewMarket is the parent company of three operating companies, each managing its own assets and liabilities. Those companies are Afton, which focuses on petroleum additive products; Ethyl, representing certain manufacturing operations and the TEL business; and NewMarket Development, which manages the property and improvements that we own in Richmond, Virginia. NewMarket is also the parent company of NewMarket Services, which provides various administrative services to NewMarket, Afton, Ethyl, and NewMarket Development.
	Certain reclassifications have been made to the accompanying consolidated financial statements and the related notes to conform to the current presentation.
Foreign Currency Translation	'
	Foreign Currency Translation—We translate the balance sheets of our foreign subsidiaries into U.S. Dollars based on the current exchange rate at the end of each period. We translate the statements of income using the weighted-average exchange rates for the period. NewMarket includes translation adjustments in the Consolidated Balance Sheets as part of accumulated other comprehensive loss and transaction adjustments in the Consolidated Statements of Income as part of cost of goods sold.
Revenue Recognition	'
	Revenue Recognition—Our policy is to recognize revenue from the sale of products when title and risk of loss have transferred to the buyer, the price is fixed and determinable, and collectability is reasonably assured. Revenues are reported at the gross amount billed, including amounts related to shipping that are charged to the customer. Provisions for rebates to customers are recorded in the same period that the related sales are recorded. Freight costs incurred on the delivery of product are included in the Consolidated Statements of Income in cost of goods sold. Our standard terms of delivery are included in our contracts, sales order confirmation documents, and invoices. Taxes assessed by a governmental authority and concurrent with sales to our customers, including sales, use, value-added, and revenue-related excises taxes, are not included as revenue, but are reflected in accrued expenses until remitted to the appropriate governmental authority.
	We recognized rental revenue on a straight-line basis over the lease term. The cumulative difference between lease revenue recognized under this method and the contractual lease payment terms was recorded in deferred charges and other assets on our Consolidated Balance Sheets. Rental revenue is reflected as a component of income from operations of discontinued business, net of tax.
Cash and Cash Equivalents	'
	Cash and Cash Equivalents—Our cash equivalents consist of government obligations and commercial paper with original maturities of 90 days or less. Throughout the year, we have cash balances in excess of federally insured amounts on deposit with various financial institutions. We state cash and cash equivalents at cost, which approximates fair value.
Accounts Receivable	'
	Accounts Receivable—We record our accounts receivable at net realizable value. We maintain an allowance for doubtful accounts for estimated losses resulting from our customers not making required payments. We determine the adequacy of the allowance by periodically evaluating each customer’s receivable balance, considering our customers’ financial condition and credit history, and considering current economic conditions.
Inventories	'
	Inventories—NewMarket values its U.S. petroleum additives and TEL inventories at the lower of cost or market, with cost determined on the last-in, first-out (LIFO) basis. In all other countries, we use the weighted-average method. Inventory cost includes raw materials, direct labor, and manufacturing overhead.
Property, Plant, and Equipment	'
	Property, Plant, and Equipment—We state property, plant, and equipment at cost and compute depreciation by the straight-line method based on the estimated useful lives of the assets. We capitalize expenditures for significant improvements that extend the useful life of the related property. We expense repairs and maintenance, including plant turnaround costs, as incurred. When property is sold or retired, we remove the cost and accumulated depreciation from the accounts and any related gain or loss is included in earnings.
	Our policy on capital leases is to record the asset at the lower of fair value at lease inception or the present value of the total minimum lease payments. We compute amortization by the straight-line method over the lesser of the estimated economic life of the asset or the term of the lease.
Real Estate Development and Construction Costs	'
	Real Estate Development and Construction Costs—We capitalize in property, plant, and equipment the costs associated with real estate development projects, including the cost of land, as well as development and construction costs. We also capitalize interest costs associated with the project. Upon completion of the project, the accumulated depreciable costs are recognized in the Consolidated Statements of Income over the estimated useful life of the asset.
Intangibles (Net of Amortization) and Goodwill	'
	Intangibles (Net of Amortization) and Goodwill—Identifiable intangibles include the cost of acquired contracts, formulas and technology, trademarks and trade names, and customer bases. We assign a value to identifiable intangibles based on independent third-party appraisals and management's assessment at the time of acquisition. NewMarket amortizes the cost of the customer bases by an accelerated method and the cost of the remaining identifiable intangibles by the straight-line method over the estimated economic life of the intangible.
	Goodwill arises from the excess of cost over net assets of businesses acquired. Goodwill represents the residual purchase price after allocation to all identifiable net assets. We test goodwill for impairment each year and whenever a significant event or circumstance occurs which could reduce the fair value of the reporting unit to which the goodwill applies below the carrying amount of the reporting unit.
Impairment of Long-Lived Assets	'
	Impairment of Long-Lived Assets—When significant events or circumstances occur that might impair the value of long-lived assets, we evaluate recoverability of the recorded cost of these assets. Assets are considered to be impaired if their carrying amount is not recoverable from the estimated undiscounted future cash flows associated with the assets. If we determine an asset is impaired and its recorded cost is higher than estimated fair market value based on the estimated present value of future cash flows, we adjust the asset to estimated fair market value.
Asset Retirement Obligations	'
	Asset Retirement Obligations—Asset retirement obligations, including costs associated with the retirement of tangible long-lived assets, are recorded at the fair value of the liability for an asset retirement obligation when incurred instead of ratably over the life of the asset. The asset retirement costs must be capitalized as part of the carrying amount of the long-lived asset. If the liability is settled for an amount other than the recorded balance, we recognize either a gain or loss at settlement.
Environmental Costs	'
	Environmental Costs—NewMarket capitalizes environmental compliance costs if they extend the useful life of the related property or prevent future contamination. Environmental compliance costs also include maintenance and operation of pollution prevention and control facilities. We expense these compliance costs in cost of goods sold as incurred.
	Accrued environmental remediation and monitoring costs relate to an existing condition caused by past operations. NewMarket accrues these costs in current operations within cost of goods sold in the Consolidated Statements of Income when it is probable that we have incurred a liability and the amount can be reasonably estimated. These estimates are based on an assessment of the site, available clean-up methods, and prior experience in handling remediation.
	When we can reliably determine the amount and timing of future cash flows, we discount these liabilities, incorporating an inflation factor.
Legal Costs	'
	Legal Costs—We expense legal costs in the period incurred.
Employee Savings Plan	'
	Employee Savings Plan—Most of our full-time salaried and hourly employees may participate in defined contribution savings plans. Employees who are covered by collective bargaining agreements may also participate in a savings plan according to the terms of their bargaining agreements. Employees, as well as NewMarket, contribute to the plans.
Research, Development, and Testing Expenses	'
	Research, Development, and Testing Expenses—NewMarket expenses all research, development, and testing costs as incurred.
Income Taxes	'
	Income Taxes—We recognize deferred income taxes for temporary differences between the financial reporting basis and the income tax basis of assets and liabilities. We also adjust for changes in tax rates and laws at the time the changes are enacted. A valuation allowance is recorded when it is more likely than not that a deferred tax asset will not be realized. We recognize accrued interest and penalties associated with uncertain tax positions as part of income tax expense on our Consolidated Statements of Income.
	We generally provide for additional U.S. taxes that would be incurred if a foreign subsidiary returns its earnings in cash to the United States.
Derivative Financial Instruments and Hedging Activities	'
	Derivative Financial Instruments and Hedging Activities—We record all derivatives on the balance sheet at fair value. The accounting for changes in the fair value of derivatives depends on the intended use of the derivative, whether we have elected to designate a derivative in a hedging relationship and apply hedge accounting, and whether the hedging relationship has satisfied the criteria necessary to apply hedge accounting. We may enter into derivative contracts that are intended to economically hedge certain of our risks, even though hedge accounting does not apply or we elect not to apply hedge accounting. We do not enter into derivative instruments for speculative purposes.
	Derivatives designated and qualifying as a hedge of the exposure to changes in the fair value of an asset, liability, or firm commitment attributable to a particular risk are considered fair value hedges. Derivatives designated and qualifying as a hedge of the exposure to variability in expected future cash flows, or other types of forecasted transactions, are considered cash flow hedges. Derivatives may also be designated as hedges of the foreign currency exposure of a net investment in a foreign operation.
Stock-based Compensation	'
	Stock-based Compensation—The value of stock awards is measured based on the closing price of our common stock on the date of grant, adjusted for provisions specific to a particular award. We recognize stock-based compensation expense on a straight-line basis over the requisite service period.
Investments	'
	Investments—We classify current marketable securities as “available for sale” and record them at fair value with the unrealized gains or losses, net of tax, included as a component of shareholders’ equity in accumulated other comprehensive loss. The fair value is determined based on quoted market prices.
	When a decline in the fair value of a marketable security is considered other than temporary, we write down the investment to estimated fair market value with a corresponding charge to earnings.
Estimates and Risks Due to Concentration of Business	'
	Estimates and Risks Due to Concentration of Business—The preparation of financial statements in conformity with accounting principles generally accepted in the United States of America requires management to make estimates and assumptions that affect the amounts reported in the financial statements and accompanying notes. Actual results could differ from those estimates.
Derivatives offsetting fair value amounts policy	'
	We have made an accounting policy election to not offset derivative fair value amounts with the fair value amounts for the right to reclaim cash collateral under our master netting arrangement.
Fair Value Measurements	'
	We determine the fair value of the derivative instrument shown in the table above by using widely-accepted valuation techniques, including discounted cash flow analysis on the expected cash flows of each instrument. The analysis reflects the contractual terms of the derivatives, including the period to maturity, and uses observable market-based inputs.
	The fair value of the interest rate swap is determined using the market standard methodology of netting the discounted future fixed cash receipts and the discounted expected variable cash payments. The variable cash payments are based on an expectation of future interest rates derived from observable market interest rate curves. In determining the fair value measurements, we incorporate credit valuation adjustments to appropriately reflect both our nonperformance risk and the counterparties’ nonperformance risk.
	Although we have determined that the majority of the inputs used to value our derivative falls within Level 2 of the fair value hierarchy, the credit valuation adjustment associated with the derivative utilizes Level 3 inputs. These Level 3 inputs include estimates of current credit spreads to evaluate the likelihood of default by both us and the counterparties to the derivative. As of December 31, 2013 and December 31, 2012, we have assessed the significance of the impact of the credit valuation adjustment on the overall valuation of our derivative and have determined that the credit valuation adjustment is not significant to the overall valuation of the derivative. Accordingly, we have determined that our derivative valuation should be classified in Level 2 of the fair value hierarchy.
	We have made an accounting policy election to measure credit risk of any derivative financial instruments subject to master netting agreements on a net basis by counterparty portfolio.
Long-term Debt	'
	Long-term debt - We record the value of our long-term debt at historical cost.

Discontinued_Operations_Tables

Discontinued Operations (Tables)	12 Months Ended
	Dec. 31, 2013
Discontinued Operations and Disposal Groups [Abstract]	'
Schedule of Components of Income From Operations of Discontinued Business	'
	The components of income from operations of discontinued business, net of tax were as follows:
		Years Ended December 31,
	(in thousands)	2013		2012		2011
	Rental revenue	$	5,747	$	11,431	$	11,431
	Cost of rental	2,136		4,386		4,386
	Interest, financing, and other expenses, net	2,728		2,382		4,672
	Loss on early extinguishment of debt	0		840		0
	Income before income tax expense	883		3,823		2,373
	Income tax expense	343		1,502		923
	Income from operations of discontinued business, net of tax	$	540	$	2,321	$	1,450

Earnings_Per_Share_Tables

Earnings Per Share (Tables)	12 Months Ended
	Dec. 31, 2013
Earnings Per Share [Abstract]	'
Calculated Basic and Diluted Earnings Per Share From Continuing Operations	'
	The following table illustrates the earnings allocation method utilized in the calculation of basic and diluted earnings per share from continuing operations.
		Years Ended December 31,
	(in thousands, except per-share amounts)	2013		2012		2011
	Earnings per share from continuing operations numerator:
	Income from continuing operations attributable to common shareholders before allocation of earnings to participating securities	$	242,347	$	237,272	$	205,457
	Income from continuing operations allocated to participating securities	339		316		0
	Income from continuing operations attributable to common shareholders after allocation of earnings to participating securities	$	242,008	$	236,956	$	205,457
	Earnings per share from continuing operations denominator:
	Weighted-average number of shares of common stock outstanding	13,286		13,405		13,707
	Dilutive effect of unexercised stock options	0		0		5
	Total shares	13,286		13,405		13,712
	Basic earnings per share from continuing operations	$	18.21	$	17.68	$	14.99
	Diluted earnings per share from continuing operations	$	18.21	$	17.68	$	14.98

Supplemental_Cash_Flow_Informa1

Supplemental Cash Flow Information (Tables)	12 Months Ended
	Dec. 31, 2013
Supplemental Cash Flow Information [Abstract]	'
Schedule Of Supplemental Cash Flow Information	'
		Years Ended December 31,
	(in thousands)	2013		2012		2011
	Cash paid during the year for
	Interest and financing expenses (net of capitalization)	$	17,172	$	9,612	$	17,329
	Income taxes	96,273		99,956		96,919

Trade_and_Other_Accounts_Recei1

Trade and Other Accounts Receivable, Net (Tables)	12 Months Ended
	Dec. 31, 2013
Receivables [Abstract]	'
Schedule of Trade and Other Accounts Receivable, Net	'
		December 31,
	(in thousands)	2013		2012
	Trade receivables	$	286,737	$	261,492
	Income tax receivables	2,466		18,824
	Other	20,644		16,739
		$	309,847	$	297,055

Inventories_Tables

Inventories (Tables)	12 Months Ended
	Dec. 31, 2013
Inventory Disclosure [Abstract]	'
Schedule Of Inventories	'
		December 31,
	(in thousands)	2013		2012
	Finished goods and work-in-process	$	257,446	$	265,017
	Raw materials	41,799		48,881
	Stores, supplies, and other	8,273		8,776
		$	307,518	$	322,674

Prepaid_Expenses_and_Other_Cur1

Prepaid Expenses and Other Current Assets (Tables)	12 Months Ended
	Dec. 31, 2013
Prepaid Expense and Other Assets, Current [Abstract]	'
Schedule of Prepaid Expenses and Other Current Assets	'
		December 31,
	(in thousands)	2013		2012
	Income taxes on intercompany profit	$	13,812	$	12,507
	Dividend funding	12,996		0
	Other	6,176		5,678
		$	32,984	$	18,185

Property_Plant_and_Equipment_a1

Property, Plant, and Equipment, at Cost (Tables)	12 Months Ended
	Dec. 31, 2013
Property, Plant and Equipment [Abstract]	'
Schedule Of Property, Plant, And Equipment, At Cost	'
			December 31,
	(in thousands)		2013		2012
	Land		$	41,891	$	42,713
	Land improvements		31,980		31,452
	Leasehold improvements		1,134		1,148
	Buildings		138,823		191,866
	Machinery and equipment		740,003		772,256
	Construction in progress		31,365		31,532
			$	985,196	$	1,070,967
Schedule Of Useful Lives Of Property, Plant, And Equipment	'
	We depreciate the cost of property, plant, and equipment by the straight-line method and primarily over the following useful lives:
	Land improvements	5 - 30 years
	Buildings	10 - 50 years
	Machinery and equipment	3 - 15 years

Intangibles_Net_of_Amortizatio1

Intangibles (Net of Amortization) and Goodwill (Tables)	12 Months Ended
	Dec. 31, 2013
Goodwill and Intangible Assets Disclosure [Abstract]	'
Schedule Of Intangible Assets (Net of Amortization) and Goodwill	'
			December 31,
			2013				2012
	(in thousands)		Gross		Accumulated		Gross		Accumulated
			Carrying		Amortization		Carrying		Amortization
			Amount				Amount
	Amortizing intangible assets
	Formulas and technology		$	88,917	$	77,217	$	91,662	$	74,762
	Contracts		7,127		5,528		9,593		6,734
	Customer bases		7,012		2,918		7,021		2,400
	Trademarks and trade names		1,591		610		1,586		426
	Goodwill		4,945				5,002
			$	109,592	$	86,273	$	114,864	$	84,322
	Aggregate amortization expense				$	7,194			$	7,433
Schedule Of Estimated Annual Amortization Expense Related To Intangible Assets	'
	Estimated annual amortization expense related to our intangible assets for the next five years is expected to be (in thousands):
	2014	$	6,163
	2015	5,790
	2016	1,910
	2017	746
	2018	715

Deferred_Charges_and_Other_Ass1

Deferred Charges and Other Assets (Tables)	12 Months Ended
	Dec. 31, 2013
Other Assets, Noncurrent [Abstract]	'
Schedule Of Deferred Charges and Other Assets	'
		December 31,
	(in thousands)	2013		2012
	Interest rate swap deposits	$	25,839	$	37,694
	Deferred financing costs, net of amortization	7,390		8,560
	Asbestos insurance receivables	5,596		6,498
	Other	4,727		19,255
		$	43,552	$	72,007

Accrued_Expenses_Tables

Accrued Expenses (Tables)	12 Months Ended
	Dec. 31, 2013
Accrued Liabilities, Current [Abstract]	'
Schedule Of Accrued Expenses	'
		December 31,
	(in thousands)	2013		2012
	Employee benefits, payroll, and related taxes	$	28,779	$	28,659
	Customer rebates	20,517		21,881
	Taxes other than income and payroll	3,929		4,517
	Repurchase of NewMarket Corporation common stock	3,842		0
	Other	20,925		24,004
		$	77,992	$	79,061

Longterm_Debt_Tables

Long-term Debt (Tables)	12 Months Ended
	Dec. 31, 2013
Long-term Debt and Capital Lease Obligations [Abstract]	'
Schedule Of Long-Term Debt	'
		December 31,
	(in thousands)	2013		2012
	Senior notes - 4.10% due 2022	$	349,467	$	349,407
	Revolving credit facility	0		75,000
		$	349,467	$	424,407
Schedule of Unused Portion of Revolving Credit Facility	'
	The following table provides information related to the unused portion of our revolving credit facility in effect at December 31, 2013 and December 31, 2012:
		December 31,
	(in millions)	2013		2012
	Maximum borrowing capacity under the revolving credit facility	$	650	$	650
	Outstanding borrowings under the revolving credit facility	0		75
	Outstanding letters of credit	3		3
	Unused portion of revolving credit facility	$	647	$	572

Other_Noncurrent_Liabilities_T

Other Noncurrent Liabilities (Tables)	12 Months Ended
	Dec. 31, 2013
Other Liabilities, Noncurrent [Abstract]	'
Schedule Of Other Noncurrent Liabilities	'
		December 31,
	(in thousands)	2013		2012
	Employee benefits	$	90,088	$	140,501
	Interest rate swaps	18,941		30,508
	Environmental remediation	15,337		16,869
	Asbestos litigation reserve	10,106		9,453
	Other	23,273		23,634
		$	157,745	$	220,965

Stockbased_Compensation_Tables

Stock-based Compensation (Tables)	12 Months Ended
	Dec. 31, 2013
Share-based Compensation [Abstract]	'
Schedule of Restricted Stock Award Activity	'
	A summary of activity during 2013 related to NewMarket’s restricted stock awards is presented below in whole shares:
		Number of Shares	Weighted Average Grant-Date Fair Value
	Nonvested restricted stock awards at January 1, 2013	11,940	$	246.93
	Granted in 2013	8,850	314.19
	Vested in 2013	65	246.93
	Forfeited in 2013	455	252.1
	Nonvested restricted stock awards at December 31, 2013	20,270	276.18

Derivatives_and_Hedging_Activi1

Derivatives and Hedging Activities (Tables)	12 Months Ended
	Dec. 31, 2013
Derivative Instruments and Hedging Activities Disclosure [Abstract]	'
Fair Value of Derivative Instruments	'
	The table below presents the fair value of our derivative financial instruments, as well as their classification on the Consolidated Balance Sheets as of December 31, 2013 and December 31, 2012.
		Liability Derivatives
		31-Dec-13						31-Dec-12
	(in thousands)	Balance Sheet Location		Fair				Balance Sheet Location		Fair
				Value						Value
	Derivatives Not Designated as Hedging Instruments
	Goldman Sachs interest rate swap	Accrued expenses and Other noncurrent liabilities		$	21,211			Accrued expenses and Other noncurrent liabilities		$	32,761
Effect of Derivative Instruments on the Consolidated Statements of Income Designated Cash Flow Hedges	'
	The tables below present the effect of our derivative financial instruments on the Consolidated Statements of Income.
	Effect of Derivative Instruments on the Consolidated Statements of Income
	Designated Cash Flow Hedges
	(in thousands)
	Derivatives in	Amount of Gain (Loss)												Location of Gain (Loss) Reclassified from Accumulated OCI into Income (Effective Portion)	Amount of Gain (Loss)
	Cash Flow	Recognized in OCI on													Reclassified from
	Hedging	Derivative (Effective Portion)													Accumulated OCI into
	Relationship														Income (Effective Portion)
		Years Ended December 31,													Years Ended December 31,
		2013				2012				2011					2013			2012			2011
	Mortgage loan interest rate swap	$	0			$	(540	)		$	(2,627	)		Discontinued operations	$	(2,727	)	$	(1,376	)	$	(1,584	)
	Construction loan interest rate swap	$	0			$	0			$	0			Discontinued operations	$	(4,068	)	$	(86	)	$	(85	)
Effect of Derivative Instruments on the Consolidated Statements of Income Non-Designated Derivatives	'
	Effect of Derivative Instruments on the Consolidated Statements of Income
	Not Designated Derivatives
	(in thousands)
	Derivatives Not Designated as	Location of Gain (Loss)		Amount of Gain (Loss) Recognized in
	Hedging Instruments	Recognized in Income on Derivatives		Income on Derivatives
				Years Ended December 31,
				2013				2012				2011
	Goldman Sachs interest rate swap	Other income (expense), net		$	6,690			$	(5,346	)		$	(17,516	)

Fair_Value_Measurements_Tables

Fair Value Measurements (Tables)	12 Months Ended
	Dec. 31, 2013
Fair Value Disclosures [Abstract]	'
Assets And Liabilities Measured At Fair Value On A Recurring Basis	'
	The following table provides information on assets and liabilities measured at fair value on a recurring basis. No material events occurred during 2013 requiring adjustment to the recognized balances of assets or liabilities which are recorded at fair value on a nonrecurring basis.
		Carrying		Fair Value		Fair Value Measurements Using
		Amount in
		Consolidated
		Balance Sheets				Level 1		Level 2		Level 3
	(in thousands)	December 31, 2013
	Cash and cash equivalents	$	238,703	$	238,703	$	238,703	$	0	$	0
	Cash deposit for collateralized interest rate swap	25,839		25,839		25,839		0		0
	Interest rate swap liability	21,211		21,211		0		21,211		0
		December 31, 2012
	Cash and cash equivalents	$	89,129	$	89,129	$	89,129	$	0	$	0
	Cash deposit for collateralized interest rate swap	37,694		37,694		37,694		0		0
	Interest rate swap liability	32,761		32,761		0		32,761		0
Estimated Fair Value Of Long-Term Debt	'
		December 31, 2013				December 31, 2012
	(in thousands)	Carrying		Fair		Carrying		Fair
		Amount		Value		Amount		Value
	Long-term debt	$	349,467	$	345,283	$	424,407	$	432,395

Contractual_Commitments_and_Co1

Contractual Commitments and Contingencies (Tables)	12 Months Ended
	Dec. 31, 2013
Commitments and Contingencies Disclosure [Abstract]	'
Future Lease Payments For Noncancelable Operating Leases	'
	Future lease payments for all noncancelable operating leases as of December 31, 2013 are (in millions):
	2014	$	12
	2015	9
	2016	7
	2017	4
	2018	2
	After 2018	9

Pension_Plans_and_Other_Postre1

Pension Plans and Other Postretirement Benefits (Tables)	12 Months Ended
	Dec. 31, 2013
U.S. Retirement Plans [Member]	'
Defined Benefit Plan Disclosure [Line Items]	'
Schedule of Net Periodic Benefit Costs	'
	The components of net periodic pension and postretirement benefit costs, as well as other amounts recognized in other comprehensive income (loss), are shown below.
		Years Ended December 31,
		Pension Benefits											Postretirement Benefits
	(in thousands)	2013				2012				2011			2013				2012			2011
	Net periodic benefit cost
	Service cost	$	11,087			$	8,801			$	7,055		$	2,130			$	1,885		$	1,514
	Interest cost	9,571				9,583				9,079			2,598				3,052			3,158
	Expected return on plan assets	(14,519		)		(13,264		)		(11,445		)	(1,452		)		(1,492		)	(1,595		)
	Amortization of prior service cost	176				210				306			9				9			8
	Amortization of actuarial net loss (gain)	7,080				5,329				3,203			(8		)		(66		)	(602		)
	Net periodic benefit cost	13,395				10,659				8,198			3,277				3,388			2,483
	Other changes in plan assets and benefit obligations recognized in other comprehensive income (loss)
	Actuarial net (gain) loss	(61,710		)		25,509				37,484			(12,902		)		2,442			5,072
	Prior service cost	972				0				0			0				0			0
	Amortization of actuarial net (loss) gain	(7,080		)		(5,329		)		(3,203		)	8				66			602
	Amortization of prior service cost	(176		)		(210		)		(306		)	(9		)		(9		)	(8		)
	Total recognized in other comprehensive income (loss)	(67,994		)		19,970				33,975			(12,903		)		2,499			5,666
	Total recognized in net periodic benefit cost and other comprehensive income (loss)	$	(54,599	)		$	30,629			$	42,173		$	(9,626	)		$	5,887		$	8,149
Schedule of Amounts Recognized in Other Comprehensive Income (Loss)	'
	The components of net periodic pension and postretirement benefit costs, as well as other amounts recognized in other comprehensive income (loss), are shown below.
		Years Ended December 31,
		Pension Benefits											Postretirement Benefits
	(in thousands)	2013				2012				2011			2013				2012			2011
	Net periodic benefit cost
	Service cost	$	11,087			$	8,801			$	7,055		$	2,130			$	1,885		$	1,514
	Interest cost	9,571				9,583				9,079			2,598				3,052			3,158
	Expected return on plan assets	(14,519		)		(13,264		)		(11,445		)	(1,452		)		(1,492		)	(1,595		)
	Amortization of prior service cost	176				210				306			9				9			8
	Amortization of actuarial net loss (gain)	7,080				5,329				3,203			(8		)		(66		)	(602		)
	Net periodic benefit cost	13,395				10,659				8,198			3,277				3,388			2,483
	Other changes in plan assets and benefit obligations recognized in other comprehensive income (loss)
	Actuarial net (gain) loss	(61,710		)		25,509				37,484			(12,902		)		2,442			5,072
	Prior service cost	972				0				0			0				0			0
	Amortization of actuarial net (loss) gain	(7,080		)		(5,329		)		(3,203		)	8				66			602
	Amortization of prior service cost	(176		)		(210		)		(306		)	(9		)		(9		)	(8		)
	Total recognized in other comprehensive income (loss)	(67,994		)		19,970				33,975			(12,903		)		2,499			5,666
	Total recognized in net periodic benefit cost and other comprehensive income (loss)	$	(54,599	)		$	30,629			$	42,173		$	(9,626	)		$	5,887		$	8,149
Schedule of Changes in the Plans' Benefit Obligations and Assets	'
	Changes in the plans’ benefit obligations and assets follow.
		Years Ended December 31,
		Pension Benefits								Postretirement Benefits
	(in thousands)	2013				2012				2013			2012
	Change in benefit obligation
	Benefit obligation at beginning of year	$	234,752			$	191,061			$	68,097		$	64,483
	Service cost	11,087				8,801				2,130			1,885
	Interest cost	9,571				9,583				2,598			3,052
	Actuarial net (gain) loss	(28,433		)		31,760				(12,964		)	2,224
	Plan amendment	973				0				0			0
	Benefits paid	(7,180		)		(6,453		)		(3,335		)	(3,547		)
	Benefit obligation at end of year	220,770				234,752				56,526			68,097
	Change in plan assets
	Fair value of plan assets at beginning of year	164,732				129,086				25,272			25,903
	Actual return on plan assets	47,796				19,515				1,390			1,274
	Employer contributions	22,825				22,584				1,524			1,642
	Benefits paid	(7,180		)		(6,453		)		(3,335		)	(3,547		)
	Fair value of plan assets at end of year	228,173				164,732				24,851			25,272
	Funded status	$	7,403			$	(70,020	)		$	(31,675	)	$	(42,825	)
	Amounts recognized in the Consolidated Balance Sheets
	Current liabilities	$	(2,422	)		$	(2,442	)		$	(1,535	)	$	(1,900	)
	Noncurrent assets	39,368				0				0			0
	Noncurrent liabilities	(29,543		)		(67,578		)		(30,140		)	(40,925		)
		$	7,403			$	(70,020	)		$	(31,675	)	$	(42,825	)
	Amounts recognized in accumulated other comprehensive loss
	Actuarial net loss (gain)	$	46,421			$	115,211			$	(16,232	)	$	(3,338	)
	Prior service (credit) cost	(306		)		(1,102		)		9			18
		$	46,115			$	114,109			$	(16,223	)	$	(3,320	)
Schedule of Amounts Recognized in the Consolidated Balance Sheets	'
	Changes in the plans’ benefit obligations and assets follow.
		Years Ended December 31,
		Pension Benefits								Postretirement Benefits
	(in thousands)	2013				2012				2013			2012
	Change in benefit obligation
	Benefit obligation at beginning of year	$	234,752			$	191,061			$	68,097		$	64,483
	Service cost	11,087				8,801				2,130			1,885
	Interest cost	9,571				9,583				2,598			3,052
	Actuarial net (gain) loss	(28,433		)		31,760				(12,964		)	2,224
	Plan amendment	973				0				0			0
	Benefits paid	(7,180		)		(6,453		)		(3,335		)	(3,547		)
	Benefit obligation at end of year	220,770				234,752				56,526			68,097
	Change in plan assets
	Fair value of plan assets at beginning of year	164,732				129,086				25,272			25,903
	Actual return on plan assets	47,796				19,515				1,390			1,274
	Employer contributions	22,825				22,584				1,524			1,642
	Benefits paid	(7,180		)		(6,453		)		(3,335		)	(3,547		)
	Fair value of plan assets at end of year	228,173				164,732				24,851			25,272
	Funded status	$	7,403			$	(70,020	)		$	(31,675	)	$	(42,825	)
	Amounts recognized in the Consolidated Balance Sheets
	Current liabilities	$	(2,422	)		$	(2,442	)		$	(1,535	)	$	(1,900	)
	Noncurrent assets	39,368				0				0			0
	Noncurrent liabilities	(29,543		)		(67,578		)		(30,140		)	(40,925		)
		$	7,403			$	(70,020	)		$	(31,675	)	$	(42,825	)
	Amounts recognized in accumulated other comprehensive loss
	Actuarial net loss (gain)	$	46,421			$	115,211			$	(16,232	)	$	(3,338	)
	Prior service (credit) cost	(306		)		(1,102		)		9			18
		$	46,115			$	114,109			$	(16,223	)	$	(3,320	)
Schedule of Assumptions to Calculate the Results of Our Retirement Plans	'
	We used the following assumptions to calculate the results of our retirement plans:
		Pension Benefits									Postretirement Benefits
		2013			2012			2011			2013		2012			2011
	Weighted-average assumptions used to determine net periodic benefit cost for years ended December 31,
	Discount rate	4.125	%		5	%		5.875	%		4.125	%	5	%		5.875	%
	Expected long-term rate of return on plan assets	8.5	%		9	%		9	%		6	%	6.25	%		6.25	%
	Rate of projected compensation increase	3.5	%		3.5	%		3.5	%
	Weighted-average assumptions used to determine benefit obligations at December 31,
	Discount rate	5	%		4.125	%		5	%		5	%	4.125	%		5	%
	Rate of projected compensation increase	3.5	%		3.5	%		3.5	%
Schedule of Fair Value of Pension and Postretirement Benefit Plans Assets	'
	The following table provides information on the fair value of our pension and postretirement benefit plans assets, as well as the related level within the fair value hierarchy.
		31-Dec-13															31-Dec-12
						Fair Value Measurements Using														Fair Value Measurements Using
	(in thousands)	Fair Value				Level 1				Level 2			Level 3				Fair Value			Level 1			Level 2		Level 3
	Pension Plans
	Equity securities:
	U. S. companies	$	176,790			$	176,790			$	0		$	0			$	114,491		$	114,491		$	0	$	0
	International companies	13,217				13,217				0			0				10,018			10,018			0		0
	Real estate investment trusts	2,921				2,921				0			0				1,475			1,475			0		0
	Common collective trust	19,699				0				19,699			0				15,479			0			15,479		0
	Money market instruments	3,637				3,637				0			0				6,792			6,792			0		0
	Mutual funds—fixed income	9,623				9,623				0			0				9,521			9,521			0		0
	Cash and cash equivalents	1,825				1,825				0			0				5,743			5,743			0		0
	Insurance contract	461				0				461			0				1,213			0			1,213		0
		$	228,173			$	208,013			$	20,160		$	0			$	164,732		$	148,040		$	16,692	$	0
	Postretirement Plans
	Insurance contract	$	24,851			$	0			$	24,851		$	0			$	25,272		$	0		$	25,272	$	0
Schedule of Expected Benefit Payments	'
	The expected benefit payments for the next ten years are as follows.
	(in thousands)	Expected Pension				Expected
		Benefit Payments				Postretirement
						Benefit Payments
	2014	$	7,763			$	3,541
	2015	9,041				3,442
	2016	9,843				3,324
	2017	10,799				3,242
	2018	11,459				3,112
	2019 through 2023	69,099				14,231
Foreign Retirement Plans [Member]	'
Defined Benefit Plan Disclosure [Line Items]	'
Schedule of Net Periodic Benefit Costs	'
	The components of net periodic pension and postretirement benefit costs, as well as other amounts recognized in other comprehensive income (loss), for these foreign defined benefit retirement plans are shown below.
		Years Ended December 31,
		Pension Benefits											Postretirement Benefits
	(in thousands)	2013				2012				2011			2013				2012			2011
	Net periodic benefit cost
	Service cost	$	5,518			$	4,314			$	4,510		$	26			$	28		$	30
	Interest cost	5,405				5,345				5,881			108				111			153
	Expected return on plan assets	(6,900		)		(6,039		)		(6,365		)	0				0			0
	Amortization of prior service (credit) cost	(23		)		(144		)		84			0				0			0
	Amortization of transition obligation	0				0				0			44				53			53
	Amortization of actuarial net loss	1,425				1,103				1,083			34				31			61
	Settlements and curtailments	205				(336		)		0			187				0			0
	Net periodic benefit cost	5,630				4,243				5,193			399				223			297
	Other changes in plan assets and benefit obligations recognized in other comprehensive income (loss)
	Actuarial net (gain) loss	(404		)		7,917				2,447			1				143			(374		)
	Prior service cost	0				2,041				0			0				0			0
	Settlements and curtailments	(710		)		(581		)		0			(347		)		0			0
	Amortization of transition obligation	0				0				0			(44		)		(53		)	(53		)
	Amortization of actuarial net loss	(1,425		)		(1,103		)		(1,083		)	(34		)		(31		)	(61		)
	Amortization of prior service credit (cost)	23				144				(84		)	0				0			0
	Total recognized in other comprehensive income (loss)	(2,516		)		8,418				1,280			(424		)		59			(488		)
	Total recognized in net periodic benefit cost and other comprehensive income (loss)	$	3,114			$	12,661			$	6,473		$	(25	)		$	282		$	(191	)
Schedule of Amounts Recognized in Other Comprehensive Income (Loss)	'
	The components of net periodic pension and postretirement benefit costs, as well as other amounts recognized in other comprehensive income (loss), for these foreign defined benefit retirement plans are shown below.
		Years Ended December 31,
		Pension Benefits											Postretirement Benefits
	(in thousands)	2013				2012				2011			2013				2012			2011
	Net periodic benefit cost
	Service cost	$	5,518			$	4,314			$	4,510		$	26			$	28		$	30
	Interest cost	5,405				5,345				5,881			108				111			153
	Expected return on plan assets	(6,900		)		(6,039		)		(6,365		)	0				0			0
	Amortization of prior service (credit) cost	(23		)		(144		)		84			0				0			0
	Amortization of transition obligation	0				0				0			44				53			53
	Amortization of actuarial net loss	1,425				1,103				1,083			34				31			61
	Settlements and curtailments	205				(336		)		0			187				0			0
	Net periodic benefit cost	5,630				4,243				5,193			399				223			297
	Other changes in plan assets and benefit obligations recognized in other comprehensive income (loss)
	Actuarial net (gain) loss	(404		)		7,917				2,447			1				143			(374		)
	Prior service cost	0				2,041				0			0				0			0
	Settlements and curtailments	(710		)		(581		)		0			(347		)		0			0
	Amortization of transition obligation	0				0				0			(44		)		(53		)	(53		)
	Amortization of actuarial net loss	(1,425		)		(1,103		)		(1,083		)	(34		)		(31		)	(61		)
	Amortization of prior service credit (cost)	23				144				(84		)	0				0			0
	Total recognized in other comprehensive income (loss)	(2,516		)		8,418				1,280			(424		)		59			(488		)
	Total recognized in net periodic benefit cost and other comprehensive income (loss)	$	3,114			$	12,661			$	6,473		$	(25	)		$	282		$	(191	)
Schedule of Changes in the Plans' Benefit Obligations and Assets	'
	Changes in the benefit obligations and assets of the foreign defined benefit plans follow.
		Years Ended December 31,
		Pension Benefits								Postretirement Benefits
	(in thousands)	2013				2012				2013			2012
	Change in benefit obligation
	Benefit obligation at beginning of year	$	135,498			$	112,656			$	2,743		$	2,596
	Service cost	5,518				4,314				26			28
	Interest cost	5,405				5,345				108			111
	Plan amendments	0				2,014				0			0
	Employee contributions	780				687				0			0
	Actuarial net loss	5,256				11,572				1			142
	Benefits paid	(5,512		)		(5,225		)		(216		)	(203		)
	Settlement and curtailment gains	(509		)		(910		)		(164		)	0
	Foreign currency translation	3,247				5,045				(177		)	69
	Benefit obligation at end of year	149,683				135,498				2,321			2,743
	Change in plan assets
	Fair value of plan assets at beginning of year	126,392				108,177				0			0
	Actual return on plan assets	12,680				9,714				0			0
	Employer contributions	7,871				7,957				216			203
	Employee contributions	780				687				0			0
	Benefits paid	(5,512		)		(5,225		)		(216		)	(203		)
	Foreign currency translation	2,572				5,082				0			0
	Fair value of plan assets at end of year	144,783				126,392				0			0
	Funded status	$	(4,900	)		$	(9,106	)		$	(2,321	)	$	(2,743	)
	Amounts recognized in the Consolidated Balance Sheets
	Noncurrent assets	$	15,719			$	12,710			$	0		$	0
	Current liabilities	(418		)		(394		)		(150		)	(149		)
	Noncurrent liabilities	(20,201		)		(21,422		)		(2,171		)	(2,594		)
		$	(4,900	)		$	(9,106	)		$	(2,321	)	$	(2,743	)
	Amounts recognized in accumulated other comprehensive loss
	Actuarial net loss	$	36,820			$	39,156			$	433		$	627
	Prior service credit	(241		)		(61		)		0			0
	Transition obligation	10				10				2			232
		$	36,589			$	39,105			$	435		$	859
Schedule of Amounts Recognized in the Consolidated Balance Sheets	'
	Changes in the benefit obligations and assets of the foreign defined benefit plans follow.
		Years Ended December 31,
		Pension Benefits								Postretirement Benefits
	(in thousands)	2013				2012				2013			2012
	Change in benefit obligation
	Benefit obligation at beginning of year	$	135,498			$	112,656			$	2,743		$	2,596
	Service cost	5,518				4,314				26			28
	Interest cost	5,405				5,345				108			111
	Plan amendments	0				2,014				0			0
	Employee contributions	780				687				0			0
	Actuarial net loss	5,256				11,572				1			142
	Benefits paid	(5,512		)		(5,225		)		(216		)	(203		)
	Settlement and curtailment gains	(509		)		(910		)		(164		)	0
	Foreign currency translation	3,247				5,045				(177		)	69
	Benefit obligation at end of year	149,683				135,498				2,321			2,743
	Change in plan assets
	Fair value of plan assets at beginning of year	126,392				108,177				0			0
	Actual return on plan assets	12,680				9,714				0			0
	Employer contributions	7,871				7,957				216			203
	Employee contributions	780				687				0			0
	Benefits paid	(5,512		)		(5,225		)		(216		)	(203		)
	Foreign currency translation	2,572				5,082				0			0
	Fair value of plan assets at end of year	144,783				126,392				0			0
	Funded status	$	(4,900	)		$	(9,106	)		$	(2,321	)	$	(2,743	)
	Amounts recognized in the Consolidated Balance Sheets
	Noncurrent assets	$	15,719			$	12,710			$	0		$	0
	Current liabilities	(418		)		(394		)		(150		)	(149		)
	Noncurrent liabilities	(20,201		)		(21,422		)		(2,171		)	(2,594		)
		$	(4,900	)		$	(9,106	)		$	(2,321	)	$	(2,743	)
	Amounts recognized in accumulated other comprehensive loss
	Actuarial net loss	$	36,820			$	39,156			$	433		$	627
	Prior service credit	(241		)		(61		)		0			0
	Transition obligation	10				10				2			232
		$	36,589			$	39,105			$	435		$	859
Schedule of Assumptions to Calculate the Results of Our Retirement Plans	'
	The information in the table below provides the weighted-average assumptions used to calculate the results of our foreign defined benefit plans.
		Pension Benefits									Postretirement Benefits
		2013			2012			2011			2013		2012			2011
	Weighted-average assumptions used to determine net periodic benefit cost for the years ended December 31,
	Discount rate	4.03	%		4.65	%		5.16	%		4	%	4.25	%		5	%
	Expected long-term rate of return on plan assets	5.56	%		5.46	%		5.92	%
	Rate of projected compensation increase	4.26	%		4.24	%		4.63	%
	Weighted-average assumptions used to determine benefit obligations at December 31,
	Discount rate	4.01	%		4.03	%		4.65	%		4.5	%	4	%		4.25	%
	Rate of projected compensation increase	4.25	%		4.26	%		4.24	%
Schedule of Fair Value of Pension and Postretirement Benefit Plans Assets	'
	The following table provides information on the fair value of our foreign pension plans assets, as well as the related level within the fair value hierarchy.
		31-Dec-13															31-Dec-12
						Fair Value Measurements Using														Fair Value Measurements Using
	(in thousands)	Fair Value				Level 1				Level 2			Level 3				Fair Value			Level 1			Level 2		Level 3
	Pension Plans
	Equity securities:
	U.S. companies	$	9,068			$	9,068			$	0		$	0			$	6,927		$	6,927		$	0	$	0
	International companies	58,571				58,571				0			0				48,244			48,244			0		0
	Debt securities—corporate	40,525				40,525				0			0				37,266			37,266			0		0
	Debt securities—government	4,498				4,498				0			0				4,338			4,338			0		0
	Mutual funds	95				95				0			0				52			52			0		0
	Cash and cash equivalents	445				445				0			0				559			559			0		0
	Pooled investment funds:
	Equity securities—U.S. companies	1,243				0				1,243			0				888			0			888		0
	Equity securities—international companies	11,692				0				11,692			0				10,908			0			10,908		0
	Debt securities—corporate	932				0				932			0				693			0			693		0
	Debt securities—government	1,057				0				1,057			0				901			0			901		0
	Cash and cash equivalents	619				0				619			0				482			0			482		0
	Property	4,925				0				4,925			0				4,409			0			4,409		0
	Insurance contract	11,113				0				11,113			0				10,725			0			10,725		0
		$	144,783			$	113,202			$	31,581		$	0			$	126,392		$	97,386		$	29,006	$	0
Schedule of Expected Benefit Payments	'
	The expected benefit payments for the next ten years for our foreign pension plans are shown in the table below. The expected benefit payments for the next ten years for our foreign postretirement benefit plans are not expected to be material.
	(in thousands)	Expected Pension
		Benefit Payments
	2014	$	4,614
	2015	4,999
	2016	4,138
	2017	5,221
	2018	4,874
	2019 through 2023	27,761
U.S. Pension Benefits [Member]	'
Defined Benefit Plan Disclosure [Line Items]	'
Schedule of Plans With the Benefit Obligation in Excess of the Fair Market Value of Plan Assets	'
	The first table below shows information on domestic pension plans with the accumulated benefit obligation in excess of plan assets. The second table presents information on domestic pension plans with the projected benefit obligation in excess of plan assets.
		December 31,
	(in thousands)	2013				2012
	Plans with the accumulated benefit obligation in excess of the fair market value of plan assets
	Projected benefit obligation	$	31,966			$	67,123
	Accumulated benefit obligation	29,805				63,831
	Fair market value of plan assets	0				31,501
		December 31,
	(in thousands)	2013				2012
	Plans with the projected benefit obligation in excess of the fair market value of plan assets
	Projected benefit obligation	$	31,966			$	234,752
	Fair market value of plan assets	0				164,732
U.S. Postretirement Benefits [Member]	'
Defined Benefit Plan Disclosure [Line Items]	'
Schedule of Assumed Health Care Cost Trend Rates	'
	Assumed health care cost trend rates are shown in the table below. The expected health care cost trend rate for 2013 was 7.5%.
		December 31,
		2013			2012
	Health care cost trend rate assumed for next year	7	%		7.5	%
	Rate to which the cost trend rate is assumed to decline (the ultimate trend rate)	5	%		5	%
	Year that the rate reaches the ultimate trend rate	2018			2018
Schedule of One-Percentage Point Change In Assumed Health Care Cost Trend Rate	'
	A one-percentage point change in the assumed health care cost trend rate would have the following effects:
	(in thousands)	1%				1%
		Increase				Decrease
	Effect on accumulated postretirement benefit obligation as of December 31, 2013	$	7,429			$	(5,854	)
	Effect on net periodic postretirement benefit cost in 2013	860				(647		)
Foreign Pension Benefits [Member]	'
Defined Benefit Plan Disclosure [Line Items]	'
Schedule of Plans With the Benefit Obligation in Excess of the Fair Market Value of Plan Assets	'
	The first table below shows information on foreign plans with the accumulated benefit obligation in excess of plan assets. The second table shows information on plans with the projected benefit obligation in excess of plan assets.
		December 31,
	(in thousands)	2013				2012
	Plans with the accumulated benefit obligation in excess of the fair market value of plan assets
	Projected benefit obligation	$	31,827			$	35,983
	Accumulated benefit obligation	22,031				25,322
	Fair market value of plan assets	11,208				14,167
		December 31,
	(in thousands)	2013				2012
	Plans with the projected benefit obligation in excess of the fair market value of plan assets
	Projected benefit obligation	$	31,827			$	35,983
	Fair market value of plan assets	11,208				14,167
Foreign Postretirement Benefits [Member]	'
Defined Benefit Plan Disclosure [Line Items]	'
Schedule of Assumed Health Care Cost Trend Rates	'
	Assumed health care cost trend rates are shown in the table below.
		December 31,
		2013			2012
	Health care cost trend rate assumed for next year	5	%		5	%
	Rate to which the cost trend rate is assumed to decline (the ultimate trend rate)	5	%		5	%
	Year that the rate reached the ultimate trend rate	2012			2012
Schedule of One-Percentage Point Change In Assumed Health Care Cost Trend Rate	'
	A one-percentage point change in the assumed health care cost trend rate would have the following effects:
	(in thousands)	1%				1%
		Increase				Decrease
	Effect on accumulated postretirement benefit obligation as of December 31, 2013	$	171			$	(138	)
	Effect on net periodic postretirement benefit cost in 2013	17				(13		)

Income_Tax_Expense_Tables

Income Tax Expense (Tables)	12 Months Ended
	Dec. 31, 2013
Income Tax Disclosure [Abstract]	'
Schedule of Income From Continuing Operations Before Income Taxes	'
	Our income from continuing operations before income tax expense is shown in the table below.
		Years Ended December 31,
	(in thousands)	2013			2012				2011
	Income from continuing operations before income tax expense
	Domestic	$	236,114		$	227,172			$	195,780
	Foreign	105,197			110,396				105,564
		$	341,311		$	337,568			$	301,344
Schedule of Provision for Income Taxes From Continuing Operations	'
	Our provision for income tax expense from continuing operations is shown in the table below.
		Years Ended December 31,
	(in thousands)	2013			2012				2011
	Income tax expense from continuing operations
	Current income taxes
	Federal	$	62,547		$	69,152			$	55,397
	State	8,782			8,301				9,903
	Foreign	22,016			26,300				28,530
		93,345			103,753				93,830
	Deferred income taxes
	Federal	3,374			(3,339		)		1,111
	State	771			(428		)		181
	Foreign	1,474			310				765
		5,619			(3,457		)		2,057
	Total income tax expense from continuing operations	$	98,964		$	100,296			$	95,887
Reconciliation Of U.S. Federal Statutory Rate To Effective Income Tax Rate	'
	The reconciliation of the U.S. federal statutory rate to the effective income tax rate follows:
		% of Income
		Before Income Tax Expense
		2013		2012			2011
	Federal statutory rate	35	%	35	%		35	%
	State taxes, net of federal tax	1.8		1.5			1.8
	Foreign operations	(3.6	)	(2.4	)		(2.0	)
	Employee savings plan	(0.2	)	(1.9	)		(0.2	)
	Research tax credit	(2.1	)	0			(0.7	)
	Domestic manufacturing tax benefit	(2.5	)	(2.1	)		(2.4	)
	Other items and adjustments	0.6		(0.4	)		0.3
	Effective income tax rate	29	%	29.7	%		31.8	%
Schedule of Deferred Income Tax Assets and Liabilities	'
	Our deferred income tax assets and liabilities follow.
		December 31,
	(in thousands)	2013			2012
	Deferred income tax assets
	Future employee benefits	$	20,618		$	56,643
	Environmental and future shutdown reserves	6,412			6,981
	Loss on derivatives	8,251			14,305
	Trademark expenses	5,404			5,152
	Foreign currency translation adjustments	4,883			4,383
	Other	5,672			7,589
		51,240			95,053
	Deferred income tax liabilities
	Depreciation and amortization	19,135			25,623
	Intangibles	1,085			3,029
	Undistributed earnings of foreign subsidiaries	1,875			3,851
	Other	4,400			5,713
		26,495			38,216
	Net deferred income tax assets	$	24,745		$	56,837
	Reconciliation to financial statements
	Deferred income tax assets—current	$	8,267		$	8,452
	Deferred income tax assets—noncurrent	22,961			55,123
	Deferred income tax liabilities—noncurrent	6,483			6,738
	Net deferred income tax assets	$	24,745		$	56,837

Other_Comprehensive_Income_Los1

Other Comprehensive Income (Loss) and Accumulated Other Comprehensive Loss (Tables)	12 Months Ended
	Dec. 31, 2013
Accumulated Other Comprehensive Income (Loss), Net of Tax [Abstract]	'
Schedule of Components of Accumulated Other Comprehensive Loss, Net of Tax	'
	The balances of, and changes in, the components of accumulated other comprehensive loss, net of tax, consist of the following:
	(in thousands)	Pension Plans			Derivative Instruments			Foreign Currency Translation Adjustments			Marketable Securities			Accumulated Other
		and Other Postretirement Benefits												Comprehensive Income (Loss)
	Balance at December 31, 2010	$	(51,562	)	$	(4,151	)	$	(18,107	)	$	0		$	(73,820	)
	Other comprehensive income (loss) before reclassifications	(27,577		)	(1,605		)	163			364			(28,655		)
	Amounts reclassified from accumulated other comprehensive loss	2,723			1,020			0			0			3,743
	Other comprehensive income (loss)	(24,854		)	(585		)	163			364			(24,912		)
	Balance at December 31, 2011	(76,416		)	(4,736		)	(17,944		)	364			(98,732		)
	Other comprehensive income (loss) before reclassifications	(24,291		)	(330		)	7,567			676			(16,378		)
	Amounts reclassified from accumulated other comprehensive loss	4,568			893			0			(1,040		)	4,421
	Other comprehensive income (loss)	(19,723		)	563			7,567			(364		)	(11,957		)
	Balance at December 31, 2012	(96,139		)	(4,173		)	(10,377		)	0			(110,689		)
	Other comprehensive income (loss) before reclassifications	45,327			0			(5,216		)	0			40,111
	Amounts reclassified from accumulated other comprehensive loss	6,319			4,173			0			0			10,492
	Other comprehensive income (loss)	51,646			4,173			(5,216		)	0			50,603
	Balance at December 31, 2013	$	(44,493	)	$	0		$	(15,593	)	$	0		$	(60,086	)
Schedule of Amounts Reclassified Out of Each Component of Accumulated Other Comprehensive Loss	'
	The following table illustrates the amounts, net of tax, reclassified out of each component of accumulated other comprehensive loss and their location within the respective line items on the Consolidated Statements of Income.
	(in thousands)	Amount Reclassified from Accumulated Other Comprehensive Loss
	Accumulated Other Comprehensive Loss Component	Years Ended December 31,									Affected Line Item on the Consolidated Statements of Income
		2013			2012			2011
	Pension plans and other postretirement benefits:
	Amortization of prior service cost	$	97		$	27		$	260		(a)
	Amortization of actuarial net loss	5,404			4,066			2,423			(a)
	Settlements and curtailments	785			436			0			(a)
	Amortization of transition obligation	33			39			40			(a)
	Total pension plans and other postretirement benefits	6,319			4,568			2,723
	Derivative instruments:
	Amortization of mortgage loan interest rate swap	1,666			841			968			Income from operations of discontinued business, net of tax
	Amortization of construction loan interest rate swap	2,507			52			52			Discontinued operations
	Total derivative instruments	4,173			893			1,020
	Marketable securities	0			(1,040		)	0			Other income (expense), net
	Total reclassifications for the period	$	10,492		$	4,421		$	3,743
	(a) These components of accumulated other comprehensive loss are included in the computation of net periodic benefit cost. See Note 18 for further information.

Segment_and_Geographic_Area_In1

Segment and Geographic Area Information (Tables)	12 Months Ended
	Dec. 31, 2013
Segment Reporting [Abstract]	'
Schedule of Revenue by Segment	'
	The table below reports revenue and operating profit by segment, as well as a reconciliation to income from continuing operations before income tax expense, for the last three years.
			Years Ended December 31,
	(in thousands)		2013			2012			2011
	Consolidated revenue
	Petroleum additives
	Lubricant additives		$	1,829,681		$	1,750,107		$	1,684,561
	Fuel additives		441,578			450,673			441,883
	Total		2,271,259			2,200,780			2,126,444
	All other		9,096			11,098			11,683
	Consolidated revenue (a)		$	2,280,355		$	2,211,878		$	2,138,127
	Segment operating profit
	Petroleum additives:
	Petroleum additives before gain on legal settlement, net		$	375,291		$	371,964		$	309,626
	Gain on legal settlement, net (b)		0			0			38,656
	Total petroleum additives		375,291			371,964			348,282
	All other		(1,150		)	6,272			2,861
	Segment operating profit		374,141			378,236			351,143
	Corporate, general, and administrative expenses		(22,508		)	(20,192		)	(16,709		)
	Interest and financing expenses, net		(17,796		)	(8,435		)	(14,151		)
	Gain (loss) on interest rate swap agreement (c)		6,690			(5,346		)	(17,516		)
	Loss on early extinguishment of debt (d)		0			(9,092		)	0
	Other income (expense), net		784			2,397			(1,423		)
	Income from continuing operations before income tax expense		$	341,311		$	337,568		$	301,344
	(a)	Net sales to one customer of our petroleum additives segment exceeded 10% of consolidated revenue in 2013, 2012, and 2011. Sales to Shell amounted to $253 million (11% of consolidated revenue) in 2013, $252 million (11% of consolidated revenue) in 2012, and $246 million (11% of consolidated revenue) in 2011. These sales represent a wide range of products sold to this customer in multiple regions of the world.
Schedule Of Operating Profit By Segment	'
	The table below reports revenue and operating profit by segment, as well as a reconciliation to income from continuing operations before income tax expense, for the last three years.
			Years Ended December 31,
	(in thousands)		2013			2012			2011
	Consolidated revenue
	Petroleum additives
	Lubricant additives		$	1,829,681		$	1,750,107		$	1,684,561
	Fuel additives		441,578			450,673			441,883
	Total		2,271,259			2,200,780			2,126,444
	All other		9,096			11,098			11,683
	Consolidated revenue (a)		$	2,280,355		$	2,211,878		$	2,138,127
	Segment operating profit
	Petroleum additives:
	Petroleum additives before gain on legal settlement, net		$	375,291		$	371,964		$	309,626
	Gain on legal settlement, net (b)		0			0			38,656
	Total petroleum additives		375,291			371,964			348,282
	All other		(1,150		)	6,272			2,861
	Segment operating profit		374,141			378,236			351,143
	Corporate, general, and administrative expenses		(22,508		)	(20,192		)	(16,709		)
	Interest and financing expenses, net		(17,796		)	(8,435		)	(14,151		)
	Gain (loss) on interest rate swap agreement (c)		6,690			(5,346		)	(17,516		)
	Loss on early extinguishment of debt (d)		0			(9,092		)	0
	Other income (expense), net		784			2,397			(1,423		)
	Income from continuing operations before income tax expense		$	341,311		$	337,568		$	301,344
	(a)	Net sales to one customer of our petroleum additives segment exceeded 10% of consolidated revenue in 2013, 2012, and 2011. Sales to Shell amounted to $253 million (11% of consolidated revenue) in 2013, $252 million (11% of consolidated revenue) in 2012, and $246 million (11% of consolidated revenue) in 2011. These sales represent a wide range of products sold to this customer in multiple regions of the world.
	(b)	For 2011, the petroleum additives segment included a net gain of $39 million related to a legal settlement. On September 13, 2011, we signed a settlement agreement with Innospec Inc. and its subsidiaries, Alcor Chemie Vertriebs GmbH and Innospec Ltd. (collectively, Innospec) which provided for mutual releases of the parties and dismissal of the actions with prejudice. Under the settlement agreement, Innospec agreed to pay NewMarket an aggregate amount of approximately $45 million in a combination of cash, a promissory note, and stock, of which $25 million was paid in cash on September 20, 2011 and $5 million was paid in the form of 195,313 shares of unregistered Innospec Inc. common stock. Fifteen million dollars is payable in three equal annual installments of $5 million under the promissory note, which bears simple interest at 1% per year. The first two installments were paid in September 2012 and September 2013. The gain is net of expenses related to the settlement of the lawsuit.
	(c)	The gain (loss) on interest rate swap agreement represents the change, since the beginning of the reporting period, in the fair value of an interest rate swap which we entered into on June 25, 2009. We are not using hedge accounting to record the interest rate swap, and accordingly, any change in the fair value is immediately recognized in earnings.
	(d)	In March 2012, we entered into a $650 million five-year unsecured revolving credit facility. During 2012, we used a portion of the $650 million revolving credit facility to fund the early redemption of all of our then outstanding 7.125% senior notes, as well as to repay the outstanding principal amount on the mortgage loan. As a result, we recognized a loss on early extinguishment of debt of $10 million during 2012 from accelerated amortization of financing fees associated with the prior revolving credit facility, the 7.125% senior notes, and the mortgage loan, as well as costs associated with redeeming the 7.125% senior notes prior to maturity. Of the loss on early extinguishment of debt, $1 million is included as a component of income from operations of discontinued business, net of tax.
Schedule Of Asset Information By Segment	'
	The following table shows asset information by segment and the reconciliation to consolidated assets. Segment assets consist of accounts receivable, inventory, and long-lived assets. Long-lived assets in the table below include property, plant, and equipment, net of depreciation.
			December 31,
	(in thousands)		2013			2012			2011
	Segment assets
	Petroleum additives		$	889,944		$	873,277		$	854,134
	All other		12,170			14,018			14,125
			902,114			887,295			868,259
	Cash and cash equivalents		238,703			89,129			50,370
	Other accounts receivable (a)		1,960			11,806			173
	Deferred income taxes		31,228			63,575			43,066
	Prepaid expenses and other current assets		32,979			18,173			36,943
	Non-segment property, plant, and equipment, net (a)		28,242			122,350			125,678
	Prepaid pension cost		55,087			12,710			11,494
	Deferred charges and other assets (a)		36,961			59,210			55,679
	Total assets		$	1,327,274		$	1,264,248		$	1,191,662
	Additions to long-lived assets
	Petroleum additives		$	54,187		$	36,873		$	50,760
	All other		7			0			30
	Corporate		4,282			1,880			2,725
	Total additions to long-lived assets		$	58,476		$	38,753		$	53,515
	Depreciation and amortization
	Petroleum additives		$	38,750		$	36,197		$	36,604
	All other (b)		4,683			4,959			4,203
	Corporate		2,711			2,233			2,545
	Total depreciation and amortization		$	46,144		$	43,389		$	43,352
Schedule Of Revenue, Total Assets, And Long-Lived Assets By Geographic Area	'
	The table below reports revenue, total assets, and long-lived assets by geographic area. Long-lived assets in the table below include property, plant, and equipment, net of depreciation. No country, except for the United States, exceeded 10% of consolidated revenue or long-lived assets in any year. However, because our foreign operations are significant to our overall business, we are presenting revenue in the table below by the major regions in which we operate. NewMarket assigns revenues to geographic areas based on the location to which the product was shipped to a third party.
			December 31,
	(in thousands)		2013			2012			2011
	Consolidated revenue
	United States		$	806,462		$	799,754		$	756,284
	Europe, Middle East, Africa, India		759,918			692,132			727,632
	Asia Pacific		462,080			440,589			405,534
	Other foreign		251,895			279,403			248,677
	Consolidated revenue		$	2,280,355		$	2,211,878		$	2,138,127
	Total assets
	United States		$	637,386		$	653,069		$	642,976
	Foreign		689,888			611,179			548,686
	Total assets		$	1,327,274		$	1,264,248		$	1,191,662
	Long-lived assets
	United States		$	165,944		$	255,150		$	256,998
	Foreign		119,092			103,221			95,968
	Total long-lived assets		$	285,036		$	358,371		$	352,966

Selected_Quarterly_Consolidate1

Selected Quarterly Consolidated Financial Data (unaudited) (Tables)	12 Months Ended
	Dec. 31, 2013
Selected Quarterly Financial Information [Abstract]	'
Schedule Of Selected Quarterly Consolidated Financial Data (unaudited)	'
	(in thousands, except per-share amounts)	First		Second			Third		Fourth
		Quarter		Quarter			Quarter		Quarter
	2013
	Net sales	$	559,750	$	583,779		$	580,455	$	556,371
	Gross profit	168,407		169,428			163,823		151,638
	Income from continuing operations	66,941		64,384			57,021		54,001
	Discontinued operations	894		(374		)	21,875		0
	Net income	$	67,835	$	64,010		$	78,896	$	54,001
	Earnings per share - basic and diluted:
	Income from continuing operations	$	5	$	4.84		$	4.29	$	4.08
	Income from discontinued operations	0.07		(0.03		)	1.65		0
	Net income	$	5.07	$	4.81		$	5.94	$	4.08
	2012	First		Second			Third		Fourth
		Quarter		Quarter			Quarter		Quarter
	Net sales	$	559,821	$	587,548		$	551,187	$	513,322
	Gross profit	167,746		163,609			160,269		138,861
	Income from continuing operations	66,147		55,063			63,823		52,239
	Discontinued operations	400		205			892		824
	Net income	$	66,547	$	55,268		$	64,715	$	53,063
	Earnings per share - basic and diluted
	Income from continuing operations	$	4.93	$	4.11		$	4.76	$	3.88
	Income from discontinued operations	0.03		0.01			0.07		0.06
	Net income	$	4.96	$	4.12		$	4.83	$	3.94

Consolidating_Financial_Inform1

Consolidating Financial Information (Tables)	12 Months Ended
	Dec. 31, 2013
Consolidating Financial Information [Abstract]	'
Schedule Of Consolidating Statements Of Income And Comprehensive Income	'
	NewMarket Corporation and Subsidiaries
	Consolidating Statements of Income and Comprehensive Income
	Year Ended December 31, 2013
	(in thousands)	Parent Company			Guarantor Subsidiaries			Non-Guarantor Subsidiaries			Total Consolidating Adjustments			Consolidated
	Net sales	$	0		$	896,593		$	1,383,762		$	0		$	2,280,355
	Cost of goods sold	0			457,698			1,169,361			0			1,627,059
	Gross profit	0			438,895			214,401			0			653,296
	Selling, general, and administrative expenses	6,869			91,230			66,779			0			164,878
	Research, development, and testing expenses	0			95,114			41,459			0			136,573
	Operating (loss) profit	(6,869		)	252,551			106,163			0			351,845
	Interest and financing expenses, net	18,303			(3,631		)	3,124			0			17,796
	Other income (expense), net	6,754			38			470			0			7,262
	(Loss) income from continuing operations before income taxes and equity income of subsidiaries	(18,418		)	256,220			103,509			0			341,311
	Income tax (benefit) expense	(5,476		)	80,958			23,482			0			98,964
	Equity income of subsidiaries	277,684			0			0			(277,684		)	0
	Income from continuing operations	264,742			175,262			80,027			(277,684		)	242,347
	Discontinued operations:
	Gain on sale of discontinued business, net of tax	0			0			21,855			0			21,855
	Income from operations of discontinued business, net of tax	0			0			540			0			540
	Net income	264,742			175,262			102,422			(277,684		)	264,742
	Other comprehensive income (loss)	50,603			11,791			(745		)	(11,046		)	50,603
	Comprehensive income	$	315,345		$	187,053		$	101,677		$	(288,730	)	$	315,345
	NewMarket Corporation and Subsidiaries
	Consolidating Statements of Income and Comprehensive Income
	Year Ended December 31, 2012
	(in thousands)	Parent Company			Guarantor Subsidiaries			Non-Guarantor Subsidiaries			Total Consolidating Adjustments			Consolidated
	Net sales	$	0		$	905,043		$	1,306,835		$	0		$	2,211,878
	Cost of goods sold	0			443,896			1,137,497			0			1,581,393
	Gross profit	0			461,147			169,338			0			630,485
	Selling, general, and administrative expenses	6,089			115,450			32,668			0			154,207
	Research, development, and testing expenses	0			86,494			31,351			0			117,845
	Operating (loss) profit	(6,089		)	259,203			105,319			0			358,433
	Interest and financing expenses, net	8,432			(3,842		)	3,845			0			8,435
	Loss on early extinguishment of debt	9,092			0			0			0			9,092
	Other income (expense), net	(5,301		)	1,690			273			0			(3,338		)
	(Loss) income from continuing operations before income taxes and equity income of subsidiaries	(28,914		)	264,735			101,747			0			337,568
	Income tax (benefit) expense	(17,984		)	93,205			25,075			0			100,296
	Equity income of subsidiaries	250,523			0			0			(250,523		)	0
	Income from continuing operations	239,593			171,530			76,672			(250,523		)	237,272
	Income from operations of discontinued business, net of tax	0			0			2,321			0			2,321
	Net income	239,593			171,530			78,993			(250,523		)	239,593
	Other comprehensive income (loss)	(11,957		)	860			(771		)	(89		)	(11,957		)
	Comprehensive income	$	227,636		$	172,390		$	78,222		$	(250,612	)	$	227,636
	NewMarket Corporation and Subsidiaries
	Consolidating Statements of Income and Comprehensive Income
	Year Ended December 31, 2011
	(in thousands)	Parent Company			Guarantor Subsidiaries			Non-Guarantor Subsidiaries			Total Consolidating Adjustments			Consolidated
	Net sales	$	0		$	836,917		$	1,301,210		$	0		$	2,138,127
	Cost of goods sold	0			457,866			1,128,279			0			1,586,145
	Gross profit	0			379,051			172,931			0			551,982
	Selling, general, and administrative expenses	6,158			106,163			39,278			0			151,599
	Research, development, and testing expenses	0			77,569			27,927			0			105,496
	Gain on legal settlement, net	0			38,656			0			0			38,656
	Operating (loss) profit	(6,158		)	233,975			105,726			0			333,543
	Interest and financing expenses, net	14,397			(3,402		)	3,156			0			14,151
	Other income (expense), net	(18,558		)	1,794			(1,284		)	0			(18,048		)
	(Loss) income from continuing operations before income taxes and equity income of subsidiaries	(39,113		)	239,171			101,286			0			301,344
	Income tax (benefit) expense	(15,399		)	82,049			29,237			0			95,887
	Equity income of subsidiaries	230,621			0			0			(230,621		)	0
	Income from continuing operations	206,907			157,122			72,049			(230,621		)	205,457
	Income from operations of discontinued business, net of tax	0			0			1,450			0			1,450
	Net income	206,907			157,122			73,499			(230,621		)	206,907
	Other comprehensive income (loss)	(24,912		)	(5,521		)	670			4,851			(24,912		)
Comprehensive income	$	181,995		$	151,601		$	74,169		$	(225,770	)	$	181,995
Consolidating Balance Sheets	'
	NewMarket Corporation and Subsidiaries
	Consolidating Balance Sheets
	31-Dec-13
	(in thousands)	Parent Company			Guarantor Subsidiaries			Non-Guarantor Subsidiaries			Total Consolidating Adjustments			Consolidated
	ASSETS
	Cash and cash equivalents	$	1,038		$	102,205		$	135,460		$	0		$	238,703
	Trade and other accounts receivable, net	1,512			108,908			199,431			(4		)	309,847
	Amounts due from affiliated companies	0			139,710			77,098			(216,808		)	0
	Inventories	0			115,442			192,076			0			307,518
	Deferred income taxes	2,600			4,919			748			0			8,267
	Prepaid expenses and other current assets	13,055			17,886			2,043			0			32,984
	Total current assets	18,205			489,070			606,856			(216,812		)	897,319
	Amounts due from affiliated companies	0			113,076			8,025			(121,101		)	0
	Property, plant, and equipment, at cost	0			692,024			293,172			0			985,196
	Less accumulated depreciation and amortization	0			555,805			144,355			0			700,160
	Net property, plant, and equipment	0			136,219			148,817			0			285,036
	Investment in consolidated subsidiaries	955,560			0			0			(955,560		)	0
	Prepaid pension cost	23,276			16,092			15,719			0			55,087
	Deferred income taxes	20,999			0			7,984			(6,022		)	22,961
	Intangibles (net of amortization) and goodwill	0			17,036			6,283			0			23,319
	Deferred charges and other assets	33,257			9,014			1,281			0			43,552
	Total assets	$	1,051,297		$	780,507		$	794,965		$	(1,299,495	)	$	1,327,274
	LIABILITIES AND SHAREHOLDERS' EQUITY
	Accounts payable	$	6		$	86,649		$	47,477		$	0		$	134,132
	Accrued expenses	10,788			46,401			20,803			0			77,992
	Dividends payable	12,996			0			0			0			12,996
	Amounts due to affiliated companies	23,183			77,098			116,527			(216,808		)	0
	Income taxes payable	0			0			11,423			(4		)	11,419
	Other current liabilities	0			7,828			3,247			0			11,075
	Total current liabilities	46,973			217,976			199,477			(216,812		)	247,614
	Long-term debt	349,467			0			0			0			349,467
	Amounts due to affiliated companies	0			8,025			113,076			(121,101		)	0
	Other noncurrent liabilities	82,409			41,014			40,344			(6,022		)	157,745
	Total liabilities	478,849			267,015			352,897			(343,935		)	754,826
	Shareholders' equity:
	Common stock and paid-in capital	0			260,776			126,661			(387,437		)	0
	Accumulated other comprehensive loss	(60,086		)	(5,786		)	(40,360		)	46,146			(60,086		)
	Retained earnings	632,534			258,502			355,767			(614,269		)	632,534
	Total shareholders' equity	572,448			513,492			442,068			(955,560		)	572,448
	Total liabilities and shareholders' equity	$	1,051,297		$	780,507		$	794,965		$	(1,299,495	)	$	1,327,274
	NewMarket Corporation and Subsidiaries
	Consolidating Balance Sheets
	31-Dec-12
	(in thousands)	Parent Company			Guarantor Subsidiaries			Non-Guarantor Subsidiaries			Total Consolidating Adjustments			Consolidated
	ASSETS
	Cash and cash equivalents	$	5,001		$	3,956		$	80,172		$	0		$	89,129
	Trade and other accounts receivable, net	4,347			113,131			179,577			0			297,055
	Amounts due from affiliated companies	0			142,125			97,784			(239,909		)	0
	Inventories	0			117,638			205,036			0			322,674
	Deferred income taxes	2,555			5,062			835			0			8,452
	Prepaid expenses and other current assets	65			16,248			1,872			0			18,185
	Total current assets	11,968			398,160			565,276			(239,909		)	735,495
	Amounts due from affiliated companies	58,935			107,236			0			(166,171		)	0
	Property, plant, and equipment, at cost	0			664,912			406,055			0			1,070,967
	Less accumulated depreciation and amortization	0			536,700			175,896			0			712,596
	Net property, plant, and equipment	0			128,212			230,159			0			358,371
	Investment in consolidated subsidiaries	866,676			0			0			(866,676		)	0
	Prepaid pension cost	0			0			12,710			0			12,710
	Deferred income taxes	53,057			0			6,477			(4,411		)	55,123
	Intangibles (net of amortization) and goodwill	0			23,785			6,757			0			30,542
	Deferred charges and other assets	46,286			15,670			10,051			0			72,007
	Total assets	$	1,036,922		$	673,063		$	831,430		$	(1,277,167	)	$	1,264,248
	LIABILITIES AND SHAREHOLDERS' EQUITY
Accounts payable	$	206		$	75,239		$	43,853		$	0		$	119,298
Accrued expenses	8,366			50,763			19,932			0			79,061
Amounts due to affiliated companies	63,021			93,330			83,558			(239,909		)	0
Income taxes payable	0			1,214			8,810			0			10,024
Other current liabilities	0			3,906			4,382			0			8,288
Total current liabilities	71,593			224,452			160,535			(239,909		)	216,671
Long-term debt	424,407			0			0			0			424,407
Amounts due to affiliated companies	0			0			166,171			(166,171		)	0
Other noncurrent liabilities	138,717			44,755			41,904			(4,411		)	220,965
Total liabilities	634,717			269,207			368,610			(410,491		)	862,043
Shareholders' equity:
Common stock and paid-in capital	721			260,840			217,407			(478,247		)	721
Accumulated other comprehensive loss	(110,689		)	(17,578		)	(39,612		)	57,190			(110,689		)
Retained earnings	512,173			160,594			285,025			(445,619		)	512,173
Total shareholders' equity	402,205			403,856			462,820			(866,676		)	402,205
Total liabilities and shareholders' equity	$	1,036,922		$	673,063		$	831,430		$	(1,277,167	)	$	1,264,248
Condensed Consolidating Statements of Cash Flows	'
	NewMarket Corporation and Subsidiaries
	Condensed Consolidating Statements of Cash Flows
	Year Ended December 31, 2013
	(in thousands)	Parent Company			Guarantor Subsidiaries			Non-Guarantor Subsidiaries			Total Consolidating Adjustments			Consolidated
	Cash provided from (used in) operating activities	$	149,278		$	(8,448	)	$	83,832		$	53,272		$	277,934
	Cash flows from investing activities:
	Capital expenditures	0			(29,583		)	(28,893		)	0			(58,476		)
	Proceeds from sale of discontinued business	0			0			140,011			0			140,011
	Deposits for interest rate swap	(12,514		)	0			0			0			(12,514		)
	Return of deposits for interest rate swap	24,370			0			0			0			24,370
	Return of investment in subsidiary	45,174			0			0			(45,174		)	0
	Other, net	(4,927		)	0			0			0			(4,927		)
	Cash provided from (used in) investing activities	52,103			(29,583		)	111,118			(45,174		)	88,464
	Cash flows from financing activities:
	Net (repayments) borrowings under revolving credit facility	(75,000		)	0			0			0			(75,000		)
	Net (repayments) borrowings under lines of credit	0			0			(1,135		)	0			(1,135		)
	Dividends paid	(50,368		)	(86,585		)	(77,978		)	164,563			(50,368		)
	Debt issuance costs	(1,145		)	0			0			0			(1,145		)
	Repurchases of common stock	(92,195		)	0			0			0			(92,195		)
	Issuance of intercompany note payable, net	0			(14,328		)	14,328			0			0
	Repayment of intercompany note payable, net	58,935			18,961			(77,896		)	0			0
	Financing from affiliated companies	(45,571		)	218,232			0			(172,661		)	0
	Cash provided from (used in) financing activities	(205,344		)	136,280			(142,681		)	(8,098		)	(219,843		)
	Effect of foreign exchange on cash and cash equivalents	0			0			3,019			0			3,019
	(Decrease) increase in cash and cash equivalents	(3,963		)	98,249			55,288			0			149,574
	Cash and cash equivalents at beginning of year	5,001			3,956			80,172			0			89,129
	Cash and cash equivalents at end of year	$	1,038		$	102,205		$	135,460		$	0		$	238,703
	NewMarket Corporation and Subsidiaries
	Condensed Consolidating Statements of Cash Flows
	Year Ended December 31, 2012
	(in thousands)	Parent Company			Guarantor Subsidiaries			Non-Guarantor Subsidiaries			Total Consolidating Adjustments			Consolidated
	Cash provided from (used in) operating activities	$	320,504		$	140,082		$	64,015		$	(251,790	)	$	272,811
	Cash flows from investing activities:
	Capital expenditures	0			(22,308		)	(16,445		)	0			(38,753		)
	Deposits for interest rate swap	(22,913		)	0			0			0			(22,913		)
	Return of deposits for interest rate swap	21,260			0			0			0			21,260
	Other, net	(4,683		)	6,303			0			0			1,620
	Cash provided from (used in) investing activities	(6,336		)	(16,005		)	(16,445		)	0			(38,786		)
	Cash flows from financing activities:
	Net (repayments) borrowings under revolving credit facility	53,000			0			0			0			53,000
	Issuance of 4.10% senior notes	349,405			0			0			0			349,405
	Repayment of 7.125% senior notes	(150,000		)	0			0			0			(150,000		)
	Repayment of Foundry Park I mortgage loan	0			0			(63,544		)	0			(63,544		)
	Net (repayments) borrowings under lines of credit	0			0			(3,641		)	0			(3,641		)
	Dividends paid	(375,681		)	(344,584		)	(7,722		)	352,306			(375,681		)
	Debt issuance costs	(6,485		)	0			0			0			(6,485		)
	Issuance of intercompany note payable, net	(65,500		)	0			65,500			0			0
	Repayment of intercompany note payable, net	6,565			0			(6,565		)	0			0
	Financing from affiliated companies	(120,488		)	221,004			0			(100,516		)	0
	Cash provided from (used in) financing activities	(309,184		)	(123,580		)	(15,972		)	251,790			(196,946		)
	Effect of foreign exchange on cash and cash equivalents	0			0			1,680			0			1,680
	Increase in cash and cash equivalents	4,984			497			33,278			0			38,759
	Cash and cash equivalents at beginning of year	17			3,459			46,894			0			50,370
	Cash and cash equivalents at end of year	$	5,001		$	3,956		$	80,172		$	0		$	89,129
	NewMarket Corporation and Subsidiaries
	Condensed Consolidating Statements of Cash Flows
	Year Ended December 31, 2011
	(in thousands)	Parent Company			Guarantor Subsidiaries			Non-Guarantor Subsidiaries			Total Consolidating Adjustments			Consolidated
	Cash provided from (used in) operating activities	$	15,179		$	(1,763	)	$	60,612		$	110,570		$	184,598
	Cash flows from investing activities:
	Capital expenditures	0			(24,147		)	(29,368		)	0			(53,515		)
	Deposits for interest rate swap	(46,467		)	0			0			0			(46,467		)
	Return of deposits for interest rate swap	33,600			0			0			0			33,600
Other, net	(4,574		)	0			0			0			(4,574		)
Cash provided from (used in) investing activities	(17,441		)	(24,147		)	(29,368		)	0			(70,956		)
Cash flows from financing activities:
Net (repayments) borrowings under revolving credit facility	18,000			0			0			0			18,000
Repayment of Foundry Park I mortgage loan	0			0			(2,731		)	0			(2,731		)
Net (repayments) borrowings under lines of credit	0			0			6,529			0			6,529
Dividends paid	(32,588		)	0			(32,748		)	32,748			(32,588		)
Debt issuance costs	(3,233		)	0			0			0			(3,233		)
Repurchases of common stock	(98,093		)	0			0			0			(98,093		)
Issuance of intercompany note payable, net	0			(23,298		)	23,298			0			0
Repayment of intercompany note payable, net	0			24,000			(24,000		)	0			0
Financing from affiliated companies	118,106			25,212			0			(143,318		)	0
Other, net	70			958			0			0			1,028
Cash provided from (used in) financing activities	2,262			26,872			(29,652		)	(110,570		)	(111,088		)
Effect of foreign exchange on cash and cash equivalents	0			0			(1,376		)	0			(1,376		)
Increase in cash and cash equivalents	0			962			216			0			1,178
Cash and cash equivalents at beginning of year	17			2,497			46,678			0			49,192
Cash and cash equivalents at end of year	$	17		$	3,459		$	46,894		$	0		$	50,370

Summary_of_Significant_Account2

Summary of Significant Accounting Policies (Details) (USD $)	12 Months Ended
In Millions, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
	company
Summary Of Significant Accounting Policies [Line Items]	'	'	'
Number of operating companies under parent company	3	'	'
Contributions by employer for employee savings plans	$5	$5	$4
Research, development, and testing expenses for new products and processes	59	55	51
Undistributed earnings of foreign subsidiaries	$301	$239	$177
Maximum [Member]	'	'	'
Summary Of Significant Accounting Policies [Line Items]	'	'	'
Cash and cash equivalents maturity, days	'90 days	'	'

Discontinued_Operations_Detail

Discontinued Operations (Details) (USD $)	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2013	Jul. 02, 2013
				Real Estate Assets Of Foundry Park I [Member]	Real Estate Assets Of Foundry Park I [Member]
Discontinued Operations [Line Items]	'	'	'	'	'
Sales price of discontinued operation	'	'	'	'	$144,000,000
Gain on sale of discontinued operation	35,770,000	0	0	36,000,000	'
Gain on sale of discontinued business, net of tax	$21,855,000	$0	$0	$21,855,000	'

Discontinued_Operations_Schedu

Discontinued Operations (Schedule of Components of Income From Operations of Discontinued Business) (Details) (USD $)	12 Months Ended
In Thousands, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Discontinued Operations [Line Items]	'	'	'
Rental revenue	$5,747	$11,431	$11,431
Cost of rental	2,136	4,386	4,386
Interest, financing, and other expenses, net	2,728	2,382	4,672
Loss on early extinguishment of debt	0	9,932	0
Income before income tax expense	883	3,823	2,373
Income tax expense	343	1,502	923
Income from operations of discontinued business, net of tax	540	2,321	1,450
Real Estate Assets Of Foundry Park I [Member]	'	'	'
Discontinued Operations [Line Items]	'	'	'
Loss on early extinguishment of debt	$0	$840	$0

Earnings_Per_Share_Details

Earnings Per Share (Details) (USD $)	3 Months Ended								12 Months Ended
In Thousands, except Share data, unless otherwise specified	Dec. 31, 2013	Sep. 30, 2013	Jun. 30, 2013	Mar. 31, 2013	Dec. 31, 2012	Sep. 30, 2012	Jun. 30, 2012	Mar. 31, 2012	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Earnings Per Share [Abstract]	'	'	'	'	'	'	'	'	'	'	'
Anti-dilutive nonvested restricted stock awards that were excluded from the calculation of diluted earnings per share (in shares)	'	'	'	'	'	'	'	'	20,270	11,940	0
Earnings per share from continuing operations numerator:	'	'	'	'	'	'	'	'	'	'	'
Income from continuing operations attributable to common shareholders before allocation of earnings to participating securities	$54,001	$57,021	$64,384	$66,941	$52,239	$63,823	$55,063	$66,147	$242,347	$237,272	$205,457
Income from continuing operations allocated to participating securities	'	'	'	'	'	'	'	'	339	316	0
Income from continuing operations attributable to common shareholders after allocation of earnings to participating securities	'	'	'	'	'	'	'	'	$242,008	$236,956	$205,457
Earnings per share from continuing operations denominator:	'	'	'	'	'	'	'	'	'	'	'
Weighted-average number of shares of common stock outstanding (in shares)	'	'	'	'	'	'	'	'	13,286,000	13,405,000	13,707,000
Dilutive effect of unexercised stock options (in shares)	'	'	'	'	'	'	'	'	0	0	5,000
Total shares (in shares)	'	'	'	'	'	'	'	'	13,286,000	13,405,000	13,712,000
Basic earnings per share from continuing operations (in dollars per share)	'	'	'	'	'	'	'	'	$18.21	$17.68	$14.99
Diluted earnings per share from continuing operations (in dollars per share)	'	'	'	'	'	'	'	'	$18.21	$17.68	$14.98

Supplemental_Cash_Flow_Informa2

Supplemental Cash Flow Information (Schedule Of Cash Flow Information) (Details) (USD $)	12 Months Ended
In Thousands, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Cash paid during the year for	'	'	'
Interest and financing expenses (net of capitalization)	$17,172	$9,612	$17,329
Income taxes	$96,273	$99,956	$96,919

Trade_and_Other_Accounts_Recei2

Trade and Other Accounts Receivable, Net (Schedule Of Trade And Other Accounts Receivable, Net) (Details) (USD $)	Dec. 31, 2013	Dec. 31, 2012
In Thousands, unless otherwise specified
Receivables [Abstract]	'	'
Trade receivables	$286,737	$261,492
Income tax receivables	2,466	18,824
Other	20,644	16,739
Trade and other accounts receivable, net	$309,847	$297,055

Inventories_Narrative_Details

Inventories (Narrative) (Details) (USD $)	Dec. 31, 2013	Dec. 31, 2012
In Millions, unless otherwise specified
Inventory Disclosure [Abstract]	'	'
U.S. inventories, LIFO basis	$109	$111
LIFO inventories amount below replacement cost	56	58
Foreign Inventories	$192	$205

Inventories_Schedule_Of_Invent

Inventories (Schedule Of Inventories) (Details) (USD $)	Dec. 31, 2013	Dec. 31, 2012
In Thousands, unless otherwise specified
Inventory Disclosure [Abstract]	'	'
Finished goods and work-in-process	$257,446	$265,017
Raw materials	41,799	48,881
Stores, supplies, and other	8,273	8,776
Inventories	$307,518	$322,674

Prepaid_Expenses_and_Other_Cur2

Prepaid Expenses and Other Current Assets (Schedule Of Prepaid Expenses And Other Current Assets) (Details) (USD $)	Dec. 31, 2013	Dec. 31, 2012
In Thousands, unless otherwise specified
Prepaid Expense and Other Assets, Current [Abstract]	'	'
Income taxes on intercompany profit	$13,812	$12,507
Dividend funding	12,996	0
Other	6,176	5,678
Prepaid expenses and other current assets	$32,984	$18,185

Property_Plant_and_Equipment_a2

Property, Plant, and Equipment, at Cost (Narrative) (Details) (USD $)	12 Months Ended
In Millions, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Property, Plant and Equipment, at Cost [Line Items]	'	'	'
Assets held for lease, accumulated depreciation	'	$11	'
Depreciation expense	35	34	33
Land [Member]	'	'	'
Property, Plant and Equipment, at Cost [Line Items]	'	'	'
Assets held for lease	'	3	'
Land Improvements [Member]	'	'	'
Property, Plant and Equipment, at Cost [Line Items]	'	'	'
Assets held for lease	'	2	'
Buildings [Member]	'	'	'
Property, Plant and Equipment, at Cost [Line Items]	'	'	'
Assets held for lease	'	66	'
Machinery and Equipment [Member]	'	'	'
Property, Plant and Equipment, at Cost [Line Items]	'	'	'
Assets held for lease	'	$38	'

Property_Plant_and_Equipment_a3

Property, Plant, and Equipment, at Cost (Schedule Of Property, Plant, And Equipment, At Cost) (Details) (USD $)	Dec. 31, 2013	Dec. 31, 2012
In Thousands, unless otherwise specified
Property, Plant and Equipment [Abstract]	'	'
Land	$41,891	$42,713
Land improvements	31,980	31,452
Leasehold improvements	1,134	1,148
Buildings	138,823	191,866
Machinery and equipment	740,003	772,256
Construction in progress	31,365	31,532
Property, plant, and equipment, at cost	$985,196	$1,070,967

Property_Plant_and_Equipment_a4

Property, Plant, and Equipment, at Cost (Schedule Of Useful Lives Of Property, Plant, And Equipment) (Details)	12 Months Ended
	Dec. 31, 2013
Minimum [Member] | Land Improvements [Member]	'
Property, Plant and Equipment, at Cost [Line Items]	'
Property, plant, and equipment, useful lives (in years)	'5 years
Minimum [Member] | Buildings [Member]	'
Property, Plant and Equipment, at Cost [Line Items]	'
Property, plant, and equipment, useful lives (in years)	'10 years
Minimum [Member] | Machinery and Equipment [Member]	'
Property, Plant and Equipment, at Cost [Line Items]	'
Property, plant, and equipment, useful lives (in years)	'3 years
Maximum [Member] | Land Improvements [Member]	'
Property, Plant and Equipment, at Cost [Line Items]	'
Property, plant, and equipment, useful lives (in years)	'30 years
Maximum [Member] | Buildings [Member]	'
Property, Plant and Equipment, at Cost [Line Items]	'
Property, plant, and equipment, useful lives (in years)	'50 years
Maximum [Member] | Machinery and Equipment [Member]	'
Property, Plant and Equipment, at Cost [Line Items]	'
Property, plant, and equipment, useful lives (in years)	'15 years

Intangibles_Net_of_Amortizatio2

Intangibles (Net of Amortization) and Goodwill (Narrative) (Details) (USD $)	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Intangibles (net of amortization) and Goodwill [Line Items]	'	'	'
Aggregate amortization expense	$7,194,000	$7,433,000	$9,000,000
Accumulated goodwill impairment	$0	$0	'
Customer Bases [Member]	'	'	'
Intangibles (net of amortization) and Goodwill [Line Items]	'	'	'
Estimated economic life, in years	'20 years	'	'
Trademarks and Trade Names [Member]	'	'	'
Intangibles (net of amortization) and Goodwill [Line Items]	'	'	'
Estimated economic life, in years	'10 years	'	'
Minimum [Member] | Contracts [Member]	'	'	'
Intangibles (net of amortization) and Goodwill [Line Items]	'	'	'
Estimated economic life, in years	'1 year 6 months	'	'
Minimum [Member] | Formulas and Technology [Member]	'	'	'
Intangibles (net of amortization) and Goodwill [Line Items]	'	'	'
Estimated economic life, in years	'5 years	'	'
Maximum [Member] | Contracts [Member]	'	'	'
Intangibles (net of amortization) and Goodwill [Line Items]	'	'	'
Estimated economic life, in years	'10 years	'	'
Maximum [Member] | Formulas and Technology [Member]	'	'	'
Intangibles (net of amortization) and Goodwill [Line Items]	'	'	'
Estimated economic life, in years	'20 years	'	'

Intangibles_Net_of_Amortizatio3

Intangibles (Net of Amortization) and Goodwill (Schedule Of Information Related To Intangible Assets) (Details) (USD $)	12 Months Ended
In Thousands, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Intangibles (net of amortization) and Goodwill [Line Items]	'	'	'
Amortizing intangible assets, Accumulated Amortization	$86,273	$84,322	'
Goodwill, Gross Carrying Amount	4,945	5,002	'
Amortizing intangible assets and Goodwill, Gross Carrying Amount	109,592	114,864	'
Aggregate amortization expense	7,194	7,433	9,000
Formulas and Technology [Member]	'	'	'
Intangibles (net of amortization) and Goodwill [Line Items]	'	'	'
Amortizing intangible assets, Gross Carrying Amount	88,917	91,662	'
Amortizing intangible assets, Accumulated Amortization	77,217	74,762	'
Contracts [Member]	'	'	'
Intangibles (net of amortization) and Goodwill [Line Items]	'	'	'
Amortizing intangible assets, Gross Carrying Amount	7,127	9,593	'
Amortizing intangible assets, Accumulated Amortization	5,528	6,734	'
Customer Bases [Member]	'	'	'
Intangibles (net of amortization) and Goodwill [Line Items]	'	'	'
Amortizing intangible assets, Gross Carrying Amount	7,012	7,021	'
Amortizing intangible assets, Accumulated Amortization	2,918	2,400	'
Trademarks and Trade Names [Member]	'	'	'
Intangibles (net of amortization) and Goodwill [Line Items]	'	'	'
Amortizing intangible assets, Gross Carrying Amount	1,591	1,586	'
Amortizing intangible assets, Accumulated Amortization	$610	$426	'

Intangibles_Net_of_Amortizatio4

Intangibles (Net of Amortization) and Goodwill (Schedule Of Estimated Annual Amortization Expense Related To Intangible Assets) (Details) (USD $)	Dec. 31, 2013
In Thousands, unless otherwise specified
Goodwill and Intangible Assets Disclosure [Abstract]	'
2014	$6,163
2015	5,790
2016	1,910
2017	746
2018	$715

Deferred_Charges_and_Other_Ass2

Deferred Charges and Other Assets (Schedule Of Deferred Charges And Other Assets) (Details) (USD $)	Dec. 31, 2013	Dec. 31, 2012
In Thousands, unless otherwise specified
Other Assets, Noncurrent [Abstract]	'	'
Interest rate swap deposits	$25,839	$37,694
Deferred financing costs, net of amortization	7,390	8,560
Asbestos insurance receivables	5,596	6,498
Other	4,727	19,255
Deferred charges and other assets	$43,552	$72,007

Accrued_Expenses_Schedule_Of_A

Accrued Expenses (Schedule Of Accrued Expenses) (Details) (USD $)	Dec. 31, 2013	Dec. 31, 2012
In Thousands, unless otherwise specified
Accrued Liabilities, Current [Abstract]	'	'
Employee benefits, payroll, and related taxes	$28,779	$28,659
Customer rebates	20,517	21,881
Taxes other than income and payroll	3,929	4,517
Repurchase of NewMarket Corporation common stock	3,842	0
Other	20,925	24,004
Accrued expenses	$77,992	$79,061

Longterm_Debt_Narrative_Detail

Long-term Debt (Narrative) (Details) (USD $)	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012
Senior Notes [Member] | 4.10% Senior Notes [Member]	'	'
Debt Instrument [Line Items]	'	'
Senior notes, interest rate	4.10%	'
Principal amount of debt issued	$350,000,000	'
Debt instrument, maturity date	'2022	'
Senior notes issue price	99.83%	'
Financing costs incurred	5,000,000	'
Revolving Credit Facility [Member]	'	'
Debt Instrument [Line Items]	'	'
Term of credit facility, years	'5 years	'
Maximum borrowing capacity	650,000,000	650,000,000
Increase in aggregate amount of revolving credit facility allowed	150,000,000	'
Revolving credit facility, maturity date	14-Mar-17	'
Basis spread on federal funds effective rate	0.50%	'
Basis spread on adjusted LIBO rate	1.00%	'
Maximum Consolidated Leverage Ratio	3	'
Minimum Consolidated Interest Coverage Ratio	3	'
Average interest rate during period	2.20%	1.80%
Revolving Credit Facility [Member] | Multicurrency Borrowings [Member]	'	'
Debt Instrument [Line Items]	'	'
Maximum borrowing capacity	100,000,000	'
Revolving Credit Facility [Member] | Swingline Loans [Member]	'	'
Debt Instrument [Line Items]	'	'
Maximum borrowing capacity	$20,000,000	'
Revolving Credit Facility [Member] | Loans Bearing Interest Based On ABR [Member]	'	'
Debt Instrument [Line Items]	'	'
Applicable Rate	0.50%	'
Revolving Credit Facility [Member] | Loans Bearing Interest Based On ABR [Member] | Minimum [Member]	'	'
Debt Instrument [Line Items]	'	'
Applicable Rate	0.50%	'
Revolving Credit Facility [Member] | Loans Bearing Interest Based On ABR [Member] | Maximum [Member]	'	'
Debt Instrument [Line Items]	'	'
Applicable Rate	1.00%	'
Revolving Credit Facility [Member] | Loans Bearing Interest Based On Adjusted LIBO Rate [Member]	'	'
Debt Instrument [Line Items]	'	'
Applicable Rate	1.50%	'
Revolving Credit Facility [Member] | Loans Bearing Interest Based On Adjusted LIBO Rate [Member] | Minimum [Member]	'	'
Debt Instrument [Line Items]	'	'
Applicable Rate	1.50%	'
Revolving Credit Facility [Member] | Loans Bearing Interest Based On Adjusted LIBO Rate [Member] | Maximum [Member]	'	'
Debt Instrument [Line Items]	'	'
Applicable Rate	2.00%	'

Longterm_Debt_Schedule_Of_Long

Long-term Debt (Schedule Of Long-Term Debt) (Details) (USD $)	12 Months Ended
In Thousands, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012
Debt Instrument [Line Items]	'	'
Outstanding borrowings	$349,467	$424,407
Revolving Credit Facility [Member]	'	'
Debt Instrument [Line Items]	'	'
Outstanding borrowings	0	75,000
4.10% Senior Notes [Member] | Senior Notes [Member]	'	'
Debt Instrument [Line Items]	'	'
Outstanding borrowings	$349,467	$349,407
Senior notes, interest rate	4.10%	'
Debt instrument, maturity date	'2022	'

Longterm_Debt_Schedule_Of_Unus

Long-term Debt (Schedule Of Unused Portion Of Revolving Credit Facility) (Details) (USD $)	Dec. 31, 2013	Dec. 31, 2012
Debt Instrument [Line Items]	'	'
Outstanding borrowings	$349,467,000	$424,407,000
Revolving Credit Facility [Member]	'	'
Debt Instrument [Line Items]	'	'
Maximum borrowing capacity under the revolving credit facility	650,000,000	650,000,000
Outstanding borrowings	0	75,000,000
Outstanding letters of credit	3,000,000	3,000,000
Unused portion of revolving credit facility	$647,000,000	$572,000,000

Other_Noncurrent_Liabilities_S

Other Noncurrent Liabilities (Schedule Of Other Noncurrent Liabilities) (Details) (USD $)	Dec. 31, 2013	Dec. 31, 2012
In Thousands, unless otherwise specified
Other Liabilities, Noncurrent [Abstract]	'	'
Employee benefits	$90,088	$140,501
Interest rate swaps	18,941	30,508
Environmental remediation	15,337	16,869
Asbestos litigation reserve	10,106	9,453
Other	23,273	23,634
Other noncurrent liabilities	$157,745	$220,965

Stockbased_Compensation_Narrat

Stock-based Compensation (Narrative) (Details) (USD $)	12 Months Ended
In Millions, except Share data, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]	'	'	'
Incentive stock option, exercise period, maximum, in years	'10 years	'	'
Maximum number of shares, options, or SARs granted or awarded in any calendar year per participant	200,000	'	'
Maximum aggregate number of shares of common stock that may be issued under the Plan	1,500,000	'	'
Shares available for grant	1,429,078	'	'
Shares of common stock issued	9,534	'	'
Restricted Stock Awards [Member]	'	'	'
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]	'	'	'
Shares of common stock issued	8,850	'	'
Vesting period, in years	'3 years	'	'
Compensation expense	$1	$0.40	$3
Unrecognized compensation expense	$4	'	'
Period for recognition of unrecognized compensation expense, in years	'2 years 2 months	'	'
Non-Employee Directors [Member]	'	'	'
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]	'	'	'
Shares of common stock issued	684	'	'
Number of non-employee directors	6	'	'

Stockbased_Compensation_Schedu

Stock-based Compensation (Schedule of Restricted Stock Award Activity) (Details) (USD $)	12 Months Ended
	Dec. 31, 2013
Number of Shares	'
Granted in 2013	9,534
Restricted Stock Awards [Member]	'
Number of Shares	'
Nonvested restricted stock awards at beginning of year	11,940
Granted in 2013	8,850
Vested in 2013	65
Forfeited in 2013	455
Nonvested restricted stock awards at end of year	20,270
Weighted Average Grant-Date Fair Value	'
Nonvested restricted stock awards at beginning of year	246.93
Granted in 2013	314.19
Vested in 2013	246.93
Forfeited in 2013	252.1
Nonvested restricted stock awards at end of year	276.18

Derivatives_and_Hedging_Activi2

Derivatives and Hedging Activities (Narrative) (Details) (USD $)	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2012	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2013
			Goldman Sachs [Member]	Interest Rate Swap [Member]	Interest Rate Swap [Member]	Gain on Sale of Discontinued Business, Net of Tax [Member]
				Goldman Sachs [Member]	Goldman Sachs [Member]	Interest Rate Swap [Member]
						Construction Loan Interest Rate Swap [Member]
Derivative Instruments, Gain (Loss) [Line Items]	'	'	'	'	'	'
Amount of Gain (Loss) Reclassified from Accumulated OCI into Income (Effective Portion)	'	'	'	'	'	($4,000,000)
Notional amount of non-designated hedges of interest rate swap	'	'	'	97,000,000	'	'
Rate of fixed-rate payments for interest rate swap	'	'	'	5.31%	'	'
Cash collateral deposit	25,839,000	37,694,000	37,694,000	25,839,000	37,694,000	'
Termination value of obligations	$21,000,000	'	'	'	'	'

Derivatives_and_Hedging_Activi3

Derivatives and Hedging Activities (Fair Value Of Derivative Instruments) (Details) (Goldman Sachs [Member], Interest Rate Swap [Member], Accrued Expenses And Oher Noncurrent Liabilities [Member], USD $)	Dec. 31, 2013	Dec. 31, 2012
In Thousands, unless otherwise specified
Goldman Sachs [Member] | Interest Rate Swap [Member] | Accrued Expenses And Oher Noncurrent Liabilities [Member]	'	'
Derivative Instruments, Gain (Loss) [Line Items]	'	'
Fair value of interest rate swap liability derivatives, not designated as hedging instruments	$21,211	$32,761

Derivatives_and_Hedging_Activi4

Derivatives and Hedging Activities (Effect Of Derivative Instruments On The Consolidated Statements Of Income Designated Cash Flow Hedges) (Details) (Interest Rate Swap [Member], USD $)	12 Months Ended
In Thousands, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Mortgage Loan Interest Rate Swap [Member]	'	'	'
Derivative Instruments, Gain (Loss) [Line Items]	'	'	'
Amount of Gain (Loss) Recognized in OCI on Derivative (Effective Portion)	$0	($540)	($2,627)
Mortgage Loan Interest Rate Swap [Member] | Discontinued Operations [Member]	'	'	'
Derivative Instruments, Gain (Loss) [Line Items]	'	'	'
Amount of Gain (Loss) Reclassified from Accumulated OCI into Income (Effective Portion)	-2,727	-1,376	-1,584
Construction Loan Interest Rate Swap [Member]	'	'	'
Derivative Instruments, Gain (Loss) [Line Items]	'	'	'
Amount of Gain (Loss) Recognized in OCI on Derivative (Effective Portion)	0	0	0
Construction Loan Interest Rate Swap [Member] | Discontinued Operations [Member]	'	'	'
Derivative Instruments, Gain (Loss) [Line Items]	'	'	'
Amount of Gain (Loss) Reclassified from Accumulated OCI into Income (Effective Portion)	($4,068)	($86)	($85)

Derivatives_and_Hedging_Activi5

Derivatives and Hedging Activities (Effect Of Derivative Instruments On The Consolidated Statements Of Income Non-Designated Derivatives)(Details) (USD $)	12 Months Ended
In Thousands, unless otherwise specified	Dec. 31, 2013		Dec. 31, 2012		Dec. 31, 2011
Derivative Instruments, Gain (Loss) [Line Items]	'		'		'
Amount of Gain (Loss) Recognized in Income on Derivatives	$6,690	[1]	($5,346)	[1]	($17,516)	[1]
Goldman Sachs [Member] | Interest Rate Swap [Member] | Other income (expense), net [Member]	'		'		'
Derivative Instruments, Gain (Loss) [Line Items]	'		'		'
Amount of Gain (Loss) Recognized in Income on Derivatives	$6,690		($5,346)		($17,516)
[1]	The gain (loss) on interest rate swap agreement represents the change, since the beginning of the reporting period, in the fair value of an interest rate swap which we entered into on June 25, 2009. We are not using hedge accounting to record the interest rate swap, and accordingly, any change in the fair value is immediately recognized in earnings.

Fair_Value_Measurements_Assets

Fair Value Measurements (Assets And Liabilities Measured At Fair Value On A Recurring Basis) (Details) (USD $)	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
In Thousands, unless otherwise specified
Fair Value Measurements [Line Items]	'	'	'	'
Cash and cash equivalents, Carrying Amount in Consolidated Balance Sheets	$238,703	$89,129	$50,370	$49,192
Cash deposit for collateralized interest rate swap, Carrying Amount in Consolidated Balance Sheets	25,839	37,694	'	'
Fair Value, Level 1 [Member]	'	'	'	'
Fair Value Measurements [Line Items]	'	'	'	'
Cash and cash equivalents, Fair Value	238,703	89,129	'	'
Interest rate swap liability, Fair Value	0	0	'	'
Fair Value, Level 2 [Member]	'	'	'	'
Fair Value Measurements [Line Items]	'	'	'	'
Cash and cash equivalents, Fair Value	0	0	'	'
Interest rate swap liability, Fair Value	21,211	32,761	'	'
Fair Value, Level 3 [Member]	'	'	'	'
Fair Value Measurements [Line Items]	'	'	'	'
Cash and cash equivalents, Fair Value	0	0	'	'
Interest rate swap liability, Fair Value	0	0	'	'
Carrying Amount in Consolidated Balance Sheets [Member]	'	'	'	'
Fair Value Measurements [Line Items]	'	'	'	'
Cash and cash equivalents, Carrying Amount in Consolidated Balance Sheets	238,703	89,129	'	'
Interest rate swap liability, Carrying Amount in Consolidated Balance Sheets	21,211	32,761	'	'
Fair Value [Member]	'	'	'	'
Fair Value Measurements [Line Items]	'	'	'	'
Cash and cash equivalents, Fair Value	238,703	89,129	'	'
Interest rate swap liability, Fair Value	21,211	32,761	'	'
Goldman Sachs [Member]	'	'	'	'
Fair Value Measurements [Line Items]	'	'	'	'
Cash deposit for collateralized interest rate swap, Carrying Amount in Consolidated Balance Sheets	'	37,694	'	'
Goldman Sachs [Member] | Fair Value, Level 1 [Member]	'	'	'	'
Fair Value Measurements [Line Items]	'	'	'	'
Cash deposit for collateralized interest rate swap, Fair Value	25,839	37,694	'	'
Goldman Sachs [Member] | Fair Value, Level 2 [Member]	'	'	'	'
Fair Value Measurements [Line Items]	'	'	'	'
Cash deposit for collateralized interest rate swap, Fair Value	0	0	'	'
Goldman Sachs [Member] | Fair Value, Level 3 [Member]	'	'	'	'
Fair Value Measurements [Line Items]	'	'	'	'
Cash deposit for collateralized interest rate swap, Fair Value	0	0	'	'
Goldman Sachs [Member] | Fair Value [Member]	'	'	'	'
Fair Value Measurements [Line Items]	'	'	'	'
Cash deposit for collateralized interest rate swap, Fair Value	$25,839	$37,694	'	'

Fair_Value_Measurements_Estima

Fair Value Measurements (Estimated Fair Value Of Long-Term Debt) (Details) (USD $)	Dec. 31, 2013	Dec. 31, 2012
In Thousands, unless otherwise specified
Fair Value Disclosures [Abstract]	'	'
Long-term debt, Carrying Amount	$349,467	$424,407
Long-term debt, Fair Value	$345,283	$432,395

Recovered_Sheet1

Contractual Commitments And Contingencies (Contractual Commitments and Raw Material Purchase Obligations) (Details) (USD $)	12 Months Ended
In Millions, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Contractual Commitments And Contingencies [Line Items]	'	'	'
Operating lease rental expense	$27	$25	$24
2014	12	'	'
2015	9	'	'
2016	7	'	'
2017	4	'	'
2018	2	'	'
After 2018	9	'	'
Construction of Assets and Purchases of Property and Equipment [Member]	'	'	'
Contractual Commitments And Contingencies [Line Items]	'	'	'
Contractual purchase obligations	7	'	'
Inventories [Member]	'	'	'
Contractual Commitments And Contingencies [Line Items]	'	'	'
Contractual purchase obligations	$271	'	'
Period of raw material purchase obligations, years	'5 years	'	'

Recovered_Sheet2

Contractual Commitments And Contingencies (Litigation) (Details) (USD $)	Dec. 31, 2013	Dec. 31, 2012
In Millions, unless otherwise specified
Commitments and Contingencies Disclosure [Abstract]	'	'
Undiscounted liability related to premises asbestos claims	$12	$11
Receivable for recoveries related to premises asbestos liabilities	$6	$8

Contractual_Commitments_and_Co2

Contractual Commitments and Contingencies (Environmental) (Details) (USD $)	12 Months Ended
In Millions, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Site Contingency [Line Items]	'	'	'
Accruals for environmental remediation, dismantling, and decontamination	$18	$20	'
Payments for environmental operating and clean-up costs	19	18	19
Former TEL Plant Site Louisiana and Houston, Texas Plant Site [Member]	'	'	'
Site Contingency [Line Items]	'	'	'
Accruals for environmental remediation, dismantling, and decontamination	11	12	'
Accrual for environmental remediation, dismantling, and decontamination, undiscounted	16	16	'
Former Tel Plant Site Louisiana [Member]	'	'	'
Site Contingency [Line Items]	'	'	'
Accrual for remediation of groundwater and soil	5	6	'
Houston, Texas Plant Site [Member]	'	'	'
Site Contingency [Line Items]	'	'	'
Accrual for remediation of groundwater and soil	$6	$6	'
Minimum [Member] | Former TEL Plant Site Louisiana and Houston, Texas Plant Site [Member]	'	'	'
Site Contingency [Line Items]	'	'	'
Discount rate	3.00%	3.00%	'
Maximum [Member] | Former TEL Plant Site Louisiana and Houston, Texas Plant Site [Member]	'	'	'
Site Contingency [Line Items]	'	'	'
Discount rate	9.00%	9.00%	'

Contractual_Commitments_and_Co3

Contractual Commitments and Contingencies (Guarantees) (Details) (USD $)	Dec. 31, 2013	Dec. 31, 2013	Dec. 31, 2013	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2013
		Minimum [Member]	Maximum [Member]	Revolving Credit Facility [Member]	Revolving Credit Facility [Member]	Letters of Credit [Member]
						Revolving Credit Facility [Member]
Guarantees and Letters of Credit [Line Items]	'	'	'	'	'	'
Outstanding guarantees	$11,000,000	'	'	'	'	'
Maximum borrowing capacity under the revolving credit facility	'	'	'	650,000,000	650,000,000	100,000,000
Maximum potential amount of future payments under all other guarantees not secured by letters of credit	$24,000,000	'	'	'	'	'
Letters of credit and certain guarantees, expiration date	'	'2013	'2024	'	'	'

Pension_Plans_and_Other_Postre2

Pension Plans and Other Postretirement Benefits (Narrative) (Details) (USD $)

12 Months Ended

1 Months Ended

In Millions, unless otherwise specified

Dec. 31, 2013

Dec. 31, 2012

Dec. 31, 2011

Dec. 31, 2013

Dec. 31, 2012

Dec. 31, 2011

Dec. 31, 2013

Dec. 31, 2012

Dec. 31, 2011

Dec. 31, 2013

Dec. 31, 2012

Dec. 31, 2013

Dec. 31, 2013

Dec. 31, 2013

Dec. 31, 2013

Dec. 31, 2013

Dec. 31, 2013

Jan. 31, 2014

Jan. 31, 2014

Jan. 31, 2014

U.S. Pension Benefits [Member]

U.S. Pension Benefits [Member]

U.S. Pension Benefits [Member]

U.S. Postretirement Benefits [Member]

U.S. Postretirement Benefits [Member]

U.S. Postretirement Benefits [Member]

Foreign Pension Benefits [Member]

Foreign Pension Benefits [Member]

Foreign Pension Benefits [Member]

Foreign Postretirement Benefits [Member]

Foreign Postretirement Benefits [Member]

Equities [Member]

Equities [Member]

Debt Securities [Member]

Debt Securities [Member]

Insurance Contract [Member]

Pooled Investment Property Fund [Member]

Scenario, Forecast [Member]

Scenario, Forecast [Member]

US Companies [Member]

investmentmanagers

U.S. Pension Benefits [Member]

Foreign Pension Benefits [Member]

U.S. Pension Benefits [Member]

Foreign Pension Benefits [Member]

Foreign Pension Benefits [Member]

Foreign Pension Benefits [Member]

U.S. Pension Benefits [Member]

Debt Securities [Member]

Scenario, Forecast [Member]

plans

U.S. Pension Benefits [Member]

Equities [Member]

U.S. Pension Benefits [Member]

Defined Benefit Plan Disclosure [Line Items]

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Number of pension plans

4

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Actuarial net loss to be amortized from accumulated other comprehensive loss into net periodic benefit cost in next fiscal year

($4)

'

'

'

'

'

($1)

'

'

'

'

'

'

'

'

'

'

'

'

'

Prior service credit (cost) to be amortized from accumulated other comprehensive loss into net periodic benefit cost in next fiscal year

0.1

'

'

'

'

'

-0.1

'

'

'

'

'

'

'

'

'

'

'

'

'

Accumulated benefit obligation

188

195

'

'

'

'

134

118

'

'

'

'

'

'

'

'

'

'

'

'

Expected long-term rate of return on plan assets

8.50%

9.00%

9.00%

6.00%

6.25%

6.25%

5.56%

5.46%

5.92%

'

'

'

'

'

'

'

'

8.50%

5.20%

8.80%

Expected long-term rate for inflation

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

3.20%

'

'

Expected health care cost trend rate

'

'

'

7.00%

7.50%

'

'

'

'

5.00%

5.00%

'

'

'

'

'

'

'

'

'

Minimum target allocation percentage for plan assets

'

'

'

'

'

'

'

'

'

'

'

90.00%

'

3.00%

'

'

'

'

'

'

Maximum target allocation percentage for plan assets

'

'

'

'

'

'

'

'

'

'

'

97.00%

'

10.00%

'

'

'

'

'

'

Number of investment companies managing pension funds

6

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Number of business days notice required to make withdrawals from common collective trust

'6 days

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Estimated contributions to pension plans in next fiscal year

$12

'

'

'

'

'

$7

'

'

'

'

'

'

'

'

'

'

'

'

'

Target allocation percentage for plan assets

'

'

'

'

'

'

'

'

'

'

'

'

54.00%

'

34.00%

8.00%

4.00%

'

'

'

Pension_Plans_and_Other_Postre3

Pension Plans and Other Postretirement Benefits (Summary Of Components Of Net Periodic Benefit Cost) (Details) (USD $)	12 Months Ended
In Thousands, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
U.S. Pension Benefits [Member]	'	'	'
Net periodic benefit cost	'	'	'
Service cost	$11,087	$8,801	$7,055
Interest cost	9,571	9,583	9,079
Expected return on plan assets	-14,519	-13,264	-11,445
Amortization of prior service (credit) cost	176	210	306
Amortization of actuarial net loss (gain)	7,080	5,329	3,203
Net periodic benefit cost	13,395	10,659	8,198
Other changes in plan assets and benefit obligations recognized in other comprehensive income (loss)	'	'	'
Actuarial net (gain) loss	-61,710	25,509	37,484
Prior service cost	972	0	0
Amortization of actuarial net (loss) gain	-7,080	-5,329	-3,203
Amortization of prior service credit (cost)	-176	-210	-306
Total recognized in other comprehensive income (loss)	-67,994	19,970	33,975
Total recognized in net periodic benefit cost and other comprehensive income (loss)	-54,599	30,629	42,173
U.S. Postretirement Benefits [Member]	'	'	'
Net periodic benefit cost	'	'	'
Service cost	2,130	1,885	1,514
Interest cost	2,598	3,052	3,158
Expected return on plan assets	-1,452	-1,492	-1,595
Amortization of prior service (credit) cost	9	9	8
Amortization of actuarial net loss (gain)	-8	-66	-602
Net periodic benefit cost	3,277	3,388	2,483
Other changes in plan assets and benefit obligations recognized in other comprehensive income (loss)	'	'	'
Actuarial net (gain) loss	-12,902	2,442	5,072
Prior service cost	0	0	0
Amortization of actuarial net (loss) gain	8	66	602
Amortization of prior service credit (cost)	-9	-9	-8
Total recognized in other comprehensive income (loss)	-12,903	2,499	5,666
Total recognized in net periodic benefit cost and other comprehensive income (loss)	-9,626	5,887	8,149
Foreign Pension Benefits [Member]	'	'	'
Net periodic benefit cost	'	'	'
Service cost	5,518	4,314	4,510
Interest cost	5,405	5,345	5,881
Expected return on plan assets	-6,900	-6,039	-6,365
Amortization of prior service (credit) cost	-23	-144	84
Amortization of transition obligation	0	0	0
Amortization of actuarial net loss (gain)	1,425	1,103	1,083
Settlements and curtailments	205	-336	0
Net periodic benefit cost	5,630	4,243	5,193
Other changes in plan assets and benefit obligations recognized in other comprehensive income (loss)	'	'	'
Actuarial net (gain) loss	-404	7,917	2,447
Prior service cost	0	2,041	0
Settlements and curtailments	-710	-581	0
Amortization of transition obligation	0	0	0
Amortization of actuarial net (loss) gain	-1,425	-1,103	-1,083
Amortization of prior service credit (cost)	23	144	-84
Total recognized in other comprehensive income (loss)	-2,516	8,418	1,280
Total recognized in net periodic benefit cost and other comprehensive income (loss)	3,114	12,661	6,473
Foreign Postretirement Benefits [Member]	'	'	'
Net periodic benefit cost	'	'	'
Service cost	26	28	30
Interest cost	108	111	153
Expected return on plan assets	0	0	0
Amortization of prior service (credit) cost	0	0	0
Amortization of transition obligation	44	53	53
Amortization of actuarial net loss (gain)	34	31	61
Settlements and curtailments	187	0	0
Net periodic benefit cost	399	223	297
Other changes in plan assets and benefit obligations recognized in other comprehensive income (loss)	'	'	'
Actuarial net (gain) loss	1	143	-374
Prior service cost	0	0	0
Settlements and curtailments	-347	0	0
Amortization of transition obligation	-44	-53	-53
Amortization of actuarial net (loss) gain	-34	-31	-61
Amortization of prior service credit (cost)	0	0	0
Total recognized in other comprehensive income (loss)	-424	59	-488
Total recognized in net periodic benefit cost and other comprehensive income (loss)	($25)	$282	($191)

Pension_Plans_and_Other_Postre4

Pension Plans and Other Postretirement Benefits (Changes In The Plans' Benefit Obligations And Assets) (Details) (USD $)	12 Months Ended
In Thousands, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Change in plan assets	'	'	'
Employer contributions	$30,743	$30,586	$29,447
Amounts recognized in the Consolidated Balance Sheets	'	'	'
Noncurrent assets	55,087	12,710	11,494
U.S. Pension Benefits [Member]	'	'	'
Change in benefit obligation	'	'	'
Benefit obligation at beginning of year	234,752	191,061	'
Service cost	11,087	8,801	7,055
Interest cost	9,571	9,583	9,079
Plan amendments	973	0	'
Actuarial net (gain) loss	-28,433	31,760	'
Benefits paid	-7,180	-6,453	'
Benefit obligation at end of year	220,770	234,752	191,061
Change in plan assets	'	'	'
Fair value of plan assets at beginning of year	164,732	129,086	'
Actual return on plan assets	47,796	19,515	'
Employer contributions	22,825	22,584	'
Benefits paid	-7,180	-6,453	'
Fair value of plan assets at end of year	228,173	164,732	129,086
Funded status	7,403	-70,020	'
Amounts recognized in the Consolidated Balance Sheets	'	'	'
Noncurrent assets	39,368	0	'
Current liabilities	-2,422	-2,442	'
Noncurrent liabilities	-29,543	-67,578	'
Amounts recognized in the Consolidated Balance Sheets	7,403	-70,020	'
Amounts recognized in accumulated other comprehensive loss	'	'	'
Actuarial net loss (gain)	46,421	115,211	'
Prior service (credit) cost	-306	-1,102	'
Amounts recognized in accumulated other comprehensive loss	46,115	114,109	'
U.S. Postretirement Benefits [Member]	'	'	'
Change in benefit obligation	'	'	'
Benefit obligation at beginning of year	68,097	64,483	'
Service cost	2,130	1,885	1,514
Interest cost	2,598	3,052	3,158
Plan amendments	0	0	'
Actuarial net (gain) loss	-12,964	2,224	'
Benefits paid	-3,335	-3,547	'
Benefit obligation at end of year	56,526	68,097	64,483
Change in plan assets	'	'	'
Fair value of plan assets at beginning of year	25,272	25,903	'
Actual return on plan assets	1,390	1,274	'
Employer contributions	1,524	1,642	'
Benefits paid	-3,335	-3,547	'
Fair value of plan assets at end of year	24,851	25,272	25,903
Funded status	-31,675	-42,825	'
Amounts recognized in the Consolidated Balance Sheets	'	'	'
Noncurrent assets	0	0	'
Current liabilities	-1,535	-1,900	'
Noncurrent liabilities	-30,140	-40,925	'
Amounts recognized in the Consolidated Balance Sheets	-31,675	-42,825	'
Amounts recognized in accumulated other comprehensive loss	'	'	'
Actuarial net loss (gain)	-16,232	-3,338	'
Prior service (credit) cost	9	18	'
Amounts recognized in accumulated other comprehensive loss	-16,223	-3,320	'
Foreign Pension Benefits [Member]	'	'	'
Change in benefit obligation	'	'	'
Benefit obligation at beginning of year	135,498	112,656	'
Service cost	5,518	4,314	4,510
Interest cost	5,405	5,345	5,881
Plan amendments	0	2,014	'
Employee contributions	780	687	'
Actuarial net (gain) loss	5,256	11,572	'
Benefits paid	-5,512	-5,225	'
Settlement and curtailment gains	-509	-910	'
Foreign currency translation	3,247	5,045	'
Benefit obligation at end of year	149,683	135,498	112,656
Change in plan assets	'	'	'
Fair value of plan assets at beginning of year	126,392	108,177	'
Actual return on plan assets	12,680	9,714	'
Employer contributions	7,871	7,957	'
Employee contributions	780	687	'
Benefits paid	-5,512	-5,225	'
Foreign currency translation	2,572	5,082	'
Fair value of plan assets at end of year	144,783	126,392	108,177
Funded status	-4,900	-9,106	'
Amounts recognized in the Consolidated Balance Sheets	'	'	'
Noncurrent assets	15,719	12,710	'
Current liabilities	-418	-394	'
Noncurrent liabilities	-20,201	-21,422	'
Amounts recognized in the Consolidated Balance Sheets	-4,900	-9,106	'
Amounts recognized in accumulated other comprehensive loss	'	'	'
Actuarial net loss (gain)	36,820	39,156	'
Prior service (credit) cost	-241	-61	'
Transition obligation	10	10	'
Amounts recognized in accumulated other comprehensive loss	36,589	39,105	'
Foreign Postretirement Benefits [Member]	'	'	'
Change in benefit obligation	'	'	'
Benefit obligation at beginning of year	2,743	2,596	'
Service cost	26	28	30
Interest cost	108	111	153
Plan amendments	0	0	'
Employee contributions	0	0	'
Actuarial net (gain) loss	1	142	'
Benefits paid	-216	-203	'
Settlement and curtailment gains	-164	0	'
Foreign currency translation	-177	69	'
Benefit obligation at end of year	2,321	2,743	2,596
Change in plan assets	'	'	'
Fair value of plan assets at beginning of year	0	0	'
Actual return on plan assets	0	0	'
Employer contributions	216	203	'
Employee contributions	0	0	'
Benefits paid	-216	-203	'
Foreign currency translation	0	0	'
Fair value of plan assets at end of year	0	0	0
Funded status	-2,321	-2,743	'
Amounts recognized in the Consolidated Balance Sheets	'	'	'
Noncurrent assets	0	0	'
Current liabilities	-150	-149	'
Noncurrent liabilities	-2,171	-2,594	'
Amounts recognized in the Consolidated Balance Sheets	-2,321	-2,743	'
Amounts recognized in accumulated other comprehensive loss	'	'	'
Actuarial net loss (gain)	433	627	'
Prior service (credit) cost	0	0	'
Transition obligation	2	232	'
Amounts recognized in accumulated other comprehensive loss	$435	$859	'

Pension_Plans_and_Other_Postre5

Pension Plans and Other Postretirement Benefits (Pension Plans With The Benefit Obligation In Excess Of Plan Assets) (Details) (USD $)	Dec. 31, 2013	Dec. 31, 2012
In Thousands, unless otherwise specified
U.S. Pension Benefits [Member]	'	'
Plans with the accumulated benefit obligation in excess of the fair market value of plan assets	'	'
Projected benefit obligation	$31,966	$67,123
Accumulated benefit obligation	29,805	63,831
Fair market value of plan assets	0	31,501
Plans with the projected benefit obligation in excess of the fair market value of plan assets	'	'
Projected benefit obligation	31,966	234,752
Fair market value of plan assets	0	164,732
Foreign Pension Benefits [Member]	'	'
Plans with the accumulated benefit obligation in excess of the fair market value of plan assets	'	'
Projected benefit obligation	31,827	35,983
Accumulated benefit obligation	22,031	25,322
Fair market value of plan assets	11,208	14,167
Plans with the projected benefit obligation in excess of the fair market value of plan assets	'	'
Projected benefit obligation	31,827	35,983
Fair market value of plan assets	$11,208	$14,167

Pension_Plans_and_Other_Postre6

Pension Plans and Other Postretirement Benefits (Assumptions To Calculate The Results Of Our Retirement Plans) (Details)	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
U.S. Pension Benefits [Member]	'	'	'
Weighted-average assumptions used to determine net period benefit cost	'	'	'
Discount rate	4.13%	5.00%	5.88%
Expected long-term rate of return on plan assets	8.50%	9.00%	9.00%
Rate of projected compensation increase	3.50%	3.50%	3.50%
Weighted-average assumptions used to determine benefit obligations	'	'	'
Discount rate	5.00%	4.13%	5.00%
Rate of projected compensation increase	3.50%	3.50%	3.50%
U.S. Postretirement Benefits [Member]	'	'	'
Weighted-average assumptions used to determine net period benefit cost	'	'	'
Discount rate	4.13%	5.00%	5.88%
Expected long-term rate of return on plan assets	6.00%	6.25%	6.25%
Weighted-average assumptions used to determine benefit obligations	'	'	'
Discount rate	5.00%	4.13%	5.00%
Foreign Pension Benefits [Member]	'	'	'
Weighted-average assumptions used to determine net period benefit cost	'	'	'
Discount rate	4.03%	4.65%	5.16%
Expected long-term rate of return on plan assets	5.56%	5.46%	5.92%
Rate of projected compensation increase	4.26%	4.24%	4.63%
Weighted-average assumptions used to determine benefit obligations	'	'	'
Discount rate	4.01%	4.03%	4.65%
Rate of projected compensation increase	4.25%	4.26%	4.24%
Foreign Postretirement Benefits [Member]	'	'	'
Weighted-average assumptions used to determine net period benefit cost	'	'	'
Discount rate	4.00%	4.25%	5.00%
Weighted-average assumptions used to determine benefit obligations	'	'	'
Discount rate	4.50%	4.00%	4.25%

Pension_Plans_and_Other_Postre7

Pension Plans and Other Postretirement Benefits (Assumed Health Care Cost Trend Rates) (Details)	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012
U.S. Postretirement Benefits [Member]	'	'
Defined Benefit Plan Disclosure [Line Items]	'	'
Health care cost trend rate assumed for next year	7.00%	7.50%
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	'2018	'2018
Foreign Postretirement Benefits [Member]	'	'
Defined Benefit Plan Disclosure [Line Items]	'	'
Health care cost trend rate assumed for next year	5.00%	5.00%
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	'2012	'2012

Pension_Plans_and_Other_Postre8

Pension Plans and Other Postretirement Benefits (One-Percentage Point Change In Assumed Health Care Cost Trend Rate) (Details) (USD $)	12 Months Ended
In Thousands, unless otherwise specified	Dec. 31, 2013
U.S. Postretirement Benefits [Member]	'
Defined Benefit Plan Disclosure [Line Items]	'
Effect on accumulated postretirement benefit obligation, 1% Increase	$7,429
Effect on net periodic postretirement benefit cost, 1% Increase	860
Effect on accumulated postretirement benefit obligation, 1% Decrease	-5,854
Effect on net periodic postretirement benefit cost, 1% Decrease	-647
Foreign Postretirement Benefits [Member]	'
Defined Benefit Plan Disclosure [Line Items]	'
Effect on accumulated postretirement benefit obligation, 1% Increase	171
Effect on net periodic postretirement benefit cost, 1% Increase	17
Effect on accumulated postretirement benefit obligation, 1% Decrease	-138
Effect on net periodic postretirement benefit cost, 1% Decrease	($13)

Pension_Plans_and_Other_Postre9

Pension Plans and Other Postretirement Benefits (Fair Value Of The Pension And Postretirement Benefit Plans Assets By Asset Category) (Details) (USD $)	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
In Thousands, unless otherwise specified
U.S. Pension Benefits [Member]	'	'	'
Defined Benefit Plan Disclosure [Line Items]	'	'	'
Fair value of plan assets	$228,173	$164,732	$129,086
U.S. Pension Benefits [Member] | Fair Value [Member]	'	'	'
Defined Benefit Plan Disclosure [Line Items]	'	'	'
Fair value of plan assets	228,173	164,732	'
U.S. Pension Benefits [Member] | Fair Value [Member] | Common Collective Trust [Member]	'	'	'
Defined Benefit Plan Disclosure [Line Items]	'	'	'
Fair value of plan assets	19,699	15,479	'
U.S. Pension Benefits [Member] | Fair Value [Member] | Money Market Instruments [Member]	'	'	'
Defined Benefit Plan Disclosure [Line Items]	'	'	'
Fair value of plan assets	3,637	6,792	'
U.S. Pension Benefits [Member] | Fair Value [Member] | Mutual Funds - Fixed Income [Member]	'	'	'
Defined Benefit Plan Disclosure [Line Items]	'	'	'
Fair value of plan assets	9,623	9,521	'
U.S. Pension Benefits [Member] | Fair Value [Member] | Cash and Cash Equivalents [Member]	'	'	'
Defined Benefit Plan Disclosure [Line Items]	'	'	'
Fair value of plan assets	1,825	5,743	'
U.S. Pension Benefits [Member] | Fair Value [Member] | Insurance Contract [Member]	'	'	'
Defined Benefit Plan Disclosure [Line Items]	'	'	'
Fair value of plan assets	461	1,213	'
U.S. Pension Benefits [Member] | Fair Value, Level 1 [Member]	'	'	'
Defined Benefit Plan Disclosure [Line Items]	'	'	'
Fair value of plan assets	208,013	148,040	'
U.S. Pension Benefits [Member] | Fair Value, Level 1 [Member] | Common Collective Trust [Member]	'	'	'
Defined Benefit Plan Disclosure [Line Items]	'	'	'
Fair value of plan assets	0	0	'
U.S. Pension Benefits [Member] | Fair Value, Level 1 [Member] | Money Market Instruments [Member]	'	'	'
Defined Benefit Plan Disclosure [Line Items]	'	'	'
Fair value of plan assets	3,637	6,792	'
U.S. Pension Benefits [Member] | Fair Value, Level 1 [Member] | Mutual Funds - Fixed Income [Member]	'	'	'
Defined Benefit Plan Disclosure [Line Items]	'	'	'
Fair value of plan assets	9,623	9,521	'
U.S. Pension Benefits [Member] | Fair Value, Level 1 [Member] | Cash and Cash Equivalents [Member]	'	'	'
Defined Benefit Plan Disclosure [Line Items]	'	'	'
Fair value of plan assets	1,825	5,743	'
U.S. Pension Benefits [Member] | Fair Value, Level 1 [Member] | Insurance Contract [Member]	'	'	'
Defined Benefit Plan Disclosure [Line Items]	'	'	'
Fair value of plan assets	0	0	'
U.S. Pension Benefits [Member] | Fair Value, Level 2 [Member]	'	'	'
Defined Benefit Plan Disclosure [Line Items]	'	'	'
Fair value of plan assets	20,160	16,692	'
U.S. Pension Benefits [Member] | Fair Value, Level 2 [Member] | Common Collective Trust [Member]	'	'	'
Defined Benefit Plan Disclosure [Line Items]	'	'	'
Fair value of plan assets	19,699	15,479	'
U.S. Pension Benefits [Member] | Fair Value, Level 2 [Member] | Money Market Instruments [Member]	'	'	'
Defined Benefit Plan Disclosure [Line Items]	'	'	'
Fair value of plan assets	0	0	'
U.S. Pension Benefits [Member] | Fair Value, Level 2 [Member] | Mutual Funds - Fixed Income [Member]	'	'	'
Defined Benefit Plan Disclosure [Line Items]	'	'	'
Fair value of plan assets	0	0	'
U.S. Pension Benefits [Member] | Fair Value, Level 2 [Member] | Cash and Cash Equivalents [Member]	'	'	'
Defined Benefit Plan Disclosure [Line Items]	'	'	'
Fair value of plan assets	0	0	'
U.S. Pension Benefits [Member] | Fair Value, Level 2 [Member] | Insurance Contract [Member]	'	'	'
Defined Benefit Plan Disclosure [Line Items]	'	'	'
Fair value of plan assets	461	1,213	'
U.S. Pension Benefits [Member] | Fair Value, Level 3 [Member]	'	'	'
Defined Benefit Plan Disclosure [Line Items]	'	'	'
Fair value of plan assets	0	0	'
U.S. Pension Benefits [Member] | Fair Value, Level 3 [Member] | Common Collective Trust [Member]	'	'	'
Defined Benefit Plan Disclosure [Line Items]	'	'	'
Fair value of plan assets	0	0	'
U.S. Pension Benefits [Member] | Fair Value, Level 3 [Member] | Money Market Instruments [Member]	'	'	'
Defined Benefit Plan Disclosure [Line Items]	'	'	'
Fair value of plan assets	0	0	'
U.S. Pension Benefits [Member] | Fair Value, Level 3 [Member] | Mutual Funds - Fixed Income [Member]	'	'	'
Defined Benefit Plan Disclosure [Line Items]	'	'	'
Fair value of plan assets	0	0	'
U.S. Pension Benefits [Member] | Fair Value, Level 3 [Member] | Cash and Cash Equivalents [Member]	'	'	'
Defined Benefit Plan Disclosure [Line Items]	'	'	'
Fair value of plan assets	0	0	'
U.S. Pension Benefits [Member] | Fair Value, Level 3 [Member] | Insurance Contract [Member]	'	'	'
Defined Benefit Plan Disclosure [Line Items]	'	'	'
Fair value of plan assets	0	0	'
U.S. Postretirement Benefits [Member]	'	'	'
Defined Benefit Plan Disclosure [Line Items]	'	'	'
Fair value of plan assets	24,851	25,272	25,903
U.S. Postretirement Benefits [Member] | Fair Value [Member] | Insurance Contract [Member]	'	'	'
Defined Benefit Plan Disclosure [Line Items]	'	'	'
Fair value of plan assets	24,851	25,272	'
U.S. Postretirement Benefits [Member] | Fair Value, Level 1 [Member] | Insurance Contract [Member]	'	'	'
Defined Benefit Plan Disclosure [Line Items]	'	'	'
Fair value of plan assets	0	0	'
U.S. Postretirement Benefits [Member] | Fair Value, Level 2 [Member] | Insurance Contract [Member]	'	'	'
Defined Benefit Plan Disclosure [Line Items]	'	'	'
Fair value of plan assets	24,851	25,272	'
U.S. Postretirement Benefits [Member] | Fair Value, Level 3 [Member] | Insurance Contract [Member]	'	'	'
Defined Benefit Plan Disclosure [Line Items]	'	'	'
Fair value of plan assets	0	0	'
Foreign Pension Benefits [Member]	'	'	'
Defined Benefit Plan Disclosure [Line Items]	'	'	'
Fair value of plan assets	144,783	126,392	108,177
Foreign Pension Benefits [Member] | Fair Value [Member]	'	'	'
Defined Benefit Plan Disclosure [Line Items]	'	'	'
Fair value of plan assets	144,783	126,392	'
Foreign Pension Benefits [Member] | Fair Value [Member] | Mutual Funds - Fixed Income [Member]	'	'	'
Defined Benefit Plan Disclosure [Line Items]	'	'	'
Fair value of plan assets	95	52	'
Foreign Pension Benefits [Member] | Fair Value [Member] | Cash and Cash Equivalents [Member]	'	'	'
Defined Benefit Plan Disclosure [Line Items]	'	'	'
Fair value of plan assets	445	559	'
Foreign Pension Benefits [Member] | Fair Value [Member] | Insurance Contract [Member]	'	'	'
Defined Benefit Plan Disclosure [Line Items]	'	'	'
Fair value of plan assets	11,113	10,725	'
Foreign Pension Benefits [Member] | Fair Value [Member] | Debt Securities - Corporate [Member]	'	'	'
Defined Benefit Plan Disclosure [Line Items]	'	'	'
Fair value of plan assets	40,525	37,266	'
Foreign Pension Benefits [Member] | Fair Value [Member] | Debt Securities - Government [Member]	'	'	'
Defined Benefit Plan Disclosure [Line Items]	'	'	'
Fair value of plan assets	4,498	4,338	'
Foreign Pension Benefits [Member] | Fair Value, Level 1 [Member]	'	'	'
Defined Benefit Plan Disclosure [Line Items]	'	'	'
Fair value of plan assets	113,202	97,386	'
Foreign Pension Benefits [Member] | Fair Value, Level 1 [Member] | Mutual Funds - Fixed Income [Member]	'	'	'
Defined Benefit Plan Disclosure [Line Items]	'	'	'
Fair value of plan assets	95	52	'
Foreign Pension Benefits [Member] | Fair Value, Level 1 [Member] | Cash and Cash Equivalents [Member]	'	'	'
Defined Benefit Plan Disclosure [Line Items]	'	'	'
Fair value of plan assets	445	559	'
Foreign Pension Benefits [Member] | Fair Value, Level 1 [Member] | Insurance Contract [Member]	'	'	'
Defined Benefit Plan Disclosure [Line Items]	'	'	'
Fair value of plan assets	0	0	'
Foreign Pension Benefits [Member] | Fair Value, Level 1 [Member] | Debt Securities - Corporate [Member]	'	'	'
Defined Benefit Plan Disclosure [Line Items]	'	'	'
Fair value of plan assets	40,525	37,266	'
Foreign Pension Benefits [Member] | Fair Value, Level 1 [Member] | Debt Securities - Government [Member]	'	'	'
Defined Benefit Plan Disclosure [Line Items]	'	'	'
Fair value of plan assets	4,498	4,338	'
Foreign Pension Benefits [Member] | Fair Value, Level 2 [Member]	'	'	'
Defined Benefit Plan Disclosure [Line Items]	'	'	'
Fair value of plan assets	31,581	29,006	'
Foreign Pension Benefits [Member] | Fair Value, Level 2 [Member] | Mutual Funds - Fixed Income [Member]	'	'	'
Defined Benefit Plan Disclosure [Line Items]	'	'	'
Fair value of plan assets	0	0	'
Foreign Pension Benefits [Member] | Fair Value, Level 2 [Member] | Cash and Cash Equivalents [Member]	'	'	'
Defined Benefit Plan Disclosure [Line Items]	'	'	'
Fair value of plan assets	0	0	'
Foreign Pension Benefits [Member] | Fair Value, Level 2 [Member] | Insurance Contract [Member]	'	'	'
Defined Benefit Plan Disclosure [Line Items]	'	'	'
Fair value of plan assets	11,113	10,725	'
Foreign Pension Benefits [Member] | Fair Value, Level 2 [Member] | Debt Securities - Corporate [Member]	'	'	'
Defined Benefit Plan Disclosure [Line Items]	'	'	'
Fair value of plan assets	0	0	'
Foreign Pension Benefits [Member] | Fair Value, Level 2 [Member] | Debt Securities - Government [Member]	'	'	'
Defined Benefit Plan Disclosure [Line Items]	'	'	'
Fair value of plan assets	0	0	'
Foreign Pension Benefits [Member] | Fair Value, Level 3 [Member]	'	'	'
Defined Benefit Plan Disclosure [Line Items]	'	'	'
Fair value of plan assets	0	0	'
Foreign Pension Benefits [Member] | Fair Value, Level 3 [Member] | Mutual Funds - Fixed Income [Member]	'	'	'
Defined Benefit Plan Disclosure [Line Items]	'	'	'
Fair value of plan assets	0	0	'
Foreign Pension Benefits [Member] | Fair Value, Level 3 [Member] | Cash and Cash Equivalents [Member]	'	'	'
Defined Benefit Plan Disclosure [Line Items]	'	'	'
Fair value of plan assets	0	0	'
Foreign Pension Benefits [Member] | Fair Value, Level 3 [Member] | Insurance Contract [Member]	'	'	'
Defined Benefit Plan Disclosure [Line Items]	'	'	'
Fair value of plan assets	0	0	'
Foreign Pension Benefits [Member] | Fair Value, Level 3 [Member] | Debt Securities - Corporate [Member]	'	'	'
Defined Benefit Plan Disclosure [Line Items]	'	'	'
Fair value of plan assets	0	0	'
Foreign Pension Benefits [Member] | Fair Value, Level 3 [Member] | Debt Securities - Government [Member]	'	'	'
Defined Benefit Plan Disclosure [Line Items]	'	'	'
Fair value of plan assets	0	0	'
US Companies [Member] | U.S. Pension Benefits [Member] | Fair Value [Member] | Equity Securities [Member]	'	'	'
Defined Benefit Plan Disclosure [Line Items]	'	'	'
Fair value of plan assets	176,790	114,491	'
US Companies [Member] | U.S. Pension Benefits [Member] | Fair Value, Level 1 [Member] | Equity Securities [Member]	'	'	'
Defined Benefit Plan Disclosure [Line Items]	'	'	'
Fair value of plan assets	176,790	114,491	'
US Companies [Member] | U.S. Pension Benefits [Member] | Fair Value, Level 2 [Member] | Equity Securities [Member]	'	'	'
Defined Benefit Plan Disclosure [Line Items]	'	'	'
Fair value of plan assets	0	0	'
US Companies [Member] | U.S. Pension Benefits [Member] | Fair Value, Level 3 [Member] | Equity Securities [Member]	'	'	'
Defined Benefit Plan Disclosure [Line Items]	'	'	'
Fair value of plan assets	0	0	'
US Companies [Member] | Foreign Pension Benefits [Member] | Fair Value [Member] | Equity Securities [Member]	'	'	'
Defined Benefit Plan Disclosure [Line Items]	'	'	'
Fair value of plan assets	9,068	6,927	'
US Companies [Member] | Foreign Pension Benefits [Member] | Fair Value, Level 1 [Member] | Equity Securities [Member]	'	'	'
Defined Benefit Plan Disclosure [Line Items]	'	'	'
Fair value of plan assets	9,068	6,927	'
US Companies [Member] | Foreign Pension Benefits [Member] | Fair Value, Level 2 [Member] | Equity Securities [Member]	'	'	'
Defined Benefit Plan Disclosure [Line Items]	'	'	'
Fair value of plan assets	0	0	'
US Companies [Member] | Foreign Pension Benefits [Member] | Fair Value, Level 3 [Member] | Equity Securities [Member]	'	'	'
Defined Benefit Plan Disclosure [Line Items]	'	'	'
Fair value of plan assets	0	0	'
International Companies [Member] | U.S. Pension Benefits [Member] | Fair Value [Member] | Equity Securities [Member]	'	'	'
Defined Benefit Plan Disclosure [Line Items]	'	'	'
Fair value of plan assets	13,217	10,018	'
International Companies [Member] | U.S. Pension Benefits [Member] | Fair Value, Level 1 [Member] | Equity Securities [Member]	'	'	'
Defined Benefit Plan Disclosure [Line Items]	'	'	'
Fair value of plan assets	13,217	10,018	'
International Companies [Member] | U.S. Pension Benefits [Member] | Fair Value, Level 2 [Member] | Equity Securities [Member]	'	'	'
Defined Benefit Plan Disclosure [Line Items]	'	'	'
Fair value of plan assets	0	0	'
International Companies [Member] | U.S. Pension Benefits [Member] | Fair Value, Level 3 [Member] | Equity Securities [Member]	'	'	'
Defined Benefit Plan Disclosure [Line Items]	'	'	'
Fair value of plan assets	0	0	'
International Companies [Member] | Foreign Pension Benefits [Member] | Fair Value [Member] | Equity Securities [Member]	'	'	'
Defined Benefit Plan Disclosure [Line Items]	'	'	'
Fair value of plan assets	58,571	48,244	'
International Companies [Member] | Foreign Pension Benefits [Member] | Fair Value, Level 1 [Member] | Equity Securities [Member]	'	'	'
Defined Benefit Plan Disclosure [Line Items]	'	'	'
Fair value of plan assets	58,571	48,244	'
International Companies [Member] | Foreign Pension Benefits [Member] | Fair Value, Level 2 [Member] | Equity Securities [Member]	'	'	'
Defined Benefit Plan Disclosure [Line Items]	'	'	'
Fair value of plan assets	0	0	'
International Companies [Member] | Foreign Pension Benefits [Member] | Fair Value, Level 3 [Member] | Equity Securities [Member]	'	'	'
Defined Benefit Plan Disclosure [Line Items]	'	'	'
Fair value of plan assets	0	0	'
Real Estate Investment Trusts [Member] | U.S. Pension Benefits [Member] | Fair Value [Member] | Equity Securities [Member]	'	'	'
Defined Benefit Plan Disclosure [Line Items]	'	'	'
Fair value of plan assets	2,921	1,475	'
Real Estate Investment Trusts [Member] | U.S. Pension Benefits [Member] | Fair Value, Level 1 [Member] | Equity Securities [Member]	'	'	'
Defined Benefit Plan Disclosure [Line Items]	'	'	'
Fair value of plan assets	2,921	1,475	'
Real Estate Investment Trusts [Member] | U.S. Pension Benefits [Member] | Fair Value, Level 2 [Member] | Equity Securities [Member]	'	'	'
Defined Benefit Plan Disclosure [Line Items]	'	'	'
Fair value of plan assets	0	0	'
Real Estate Investment Trusts [Member] | U.S. Pension Benefits [Member] | Fair Value, Level 3 [Member] | Equity Securities [Member]	'	'	'
Defined Benefit Plan Disclosure [Line Items]	'	'	'
Fair value of plan assets	0	0	'
Equity Securities - U.S. Companies [Member] | Foreign Pension Benefits [Member] | Fair Value [Member] | Pooled Investment Funds [Member]	'	'	'
Defined Benefit Plan Disclosure [Line Items]	'	'	'
Fair value of plan assets	1,243	888	'
Equity Securities - U.S. Companies [Member] | Foreign Pension Benefits [Member] | Fair Value, Level 1 [Member] | Pooled Investment Funds [Member]	'	'	'
Defined Benefit Plan Disclosure [Line Items]	'	'	'
Fair value of plan assets	0	0	'
Equity Securities - U.S. Companies [Member] | Foreign Pension Benefits [Member] | Fair Value, Level 2 [Member] | Pooled Investment Funds [Member]	'	'	'
Defined Benefit Plan Disclosure [Line Items]	'	'	'
Fair value of plan assets	1,243	888	'
Equity Securities - U.S. Companies [Member] | Foreign Pension Benefits [Member] | Fair Value, Level 3 [Member] | Pooled Investment Funds [Member]	'	'	'
Defined Benefit Plan Disclosure [Line Items]	'	'	'
Fair value of plan assets	0	0	'
Equity Securities - International Companies [Member] | Foreign Pension Benefits [Member] | Fair Value [Member] | Pooled Investment Funds [Member]	'	'	'
Defined Benefit Plan Disclosure [Line Items]	'	'	'
Fair value of plan assets	11,692	10,908	'
Equity Securities - International Companies [Member] | Foreign Pension Benefits [Member] | Fair Value, Level 1 [Member] | Pooled Investment Funds [Member]	'	'	'
Defined Benefit Plan Disclosure [Line Items]	'	'	'
Fair value of plan assets	0	0	'
Equity Securities - International Companies [Member] | Foreign Pension Benefits [Member] | Fair Value, Level 2 [Member] | Pooled Investment Funds [Member]	'	'	'
Defined Benefit Plan Disclosure [Line Items]	'	'	'
Fair value of plan assets	11,692	10,908	'
Equity Securities - International Companies [Member] | Foreign Pension Benefits [Member] | Fair Value, Level 3 [Member] | Pooled Investment Funds [Member]	'	'	'
Defined Benefit Plan Disclosure [Line Items]	'	'	'
Fair value of plan assets	0	0	'
Debt Securities - Corporate [Member] | Foreign Pension Benefits [Member] | Fair Value [Member] | Pooled Investment Funds [Member]	'	'	'
Defined Benefit Plan Disclosure [Line Items]	'	'	'
Fair value of plan assets	932	693	'
Debt Securities - Corporate [Member] | Foreign Pension Benefits [Member] | Fair Value, Level 1 [Member] | Pooled Investment Funds [Member]	'	'	'
Defined Benefit Plan Disclosure [Line Items]	'	'	'
Fair value of plan assets	0	0	'
Debt Securities - Corporate [Member] | Foreign Pension Benefits [Member] | Fair Value, Level 2 [Member] | Pooled Investment Funds [Member]	'	'	'
Defined Benefit Plan Disclosure [Line Items]	'	'	'
Fair value of plan assets	932	693	'
Debt Securities - Corporate [Member] | Foreign Pension Benefits [Member] | Fair Value, Level 3 [Member] | Pooled Investment Funds [Member]	'	'	'
Defined Benefit Plan Disclosure [Line Items]	'	'	'
Fair value of plan assets	0	0	'
Debt Securities - Government [Member] | Foreign Pension Benefits [Member] | Fair Value [Member] | Pooled Investment Funds [Member]	'	'	'
Defined Benefit Plan Disclosure [Line Items]	'	'	'
Fair value of plan assets	1,057	901	'
Debt Securities - Government [Member] | Foreign Pension Benefits [Member] | Fair Value, Level 1 [Member] | Pooled Investment Funds [Member]	'	'	'
Defined Benefit Plan Disclosure [Line Items]	'	'	'
Fair value of plan assets	0	0	'
Debt Securities - Government [Member] | Foreign Pension Benefits [Member] | Fair Value, Level 2 [Member] | Pooled Investment Funds [Member]	'	'	'
Defined Benefit Plan Disclosure [Line Items]	'	'	'
Fair value of plan assets	1,057	901	'
Debt Securities - Government [Member] | Foreign Pension Benefits [Member] | Fair Value, Level 3 [Member] | Pooled Investment Funds [Member]	'	'	'
Defined Benefit Plan Disclosure [Line Items]	'	'	'
Fair value of plan assets	0	0	'
Cash and Cash Equivalents [Member] | Foreign Pension Benefits [Member] | Fair Value [Member] | Pooled Investment Funds [Member]	'	'	'
Defined Benefit Plan Disclosure [Line Items]	'	'	'
Fair value of plan assets	619	482	'
Cash and Cash Equivalents [Member] | Foreign Pension Benefits [Member] | Fair Value, Level 1 [Member] | Pooled Investment Funds [Member]	'	'	'
Defined Benefit Plan Disclosure [Line Items]	'	'	'
Fair value of plan assets	0	0	'
Cash and Cash Equivalents [Member] | Foreign Pension Benefits [Member] | Fair Value, Level 2 [Member] | Pooled Investment Funds [Member]	'	'	'
Defined Benefit Plan Disclosure [Line Items]	'	'	'
Fair value of plan assets	619	482	'
Cash and Cash Equivalents [Member] | Foreign Pension Benefits [Member] | Fair Value, Level 3 [Member] | Pooled Investment Funds [Member]	'	'	'
Defined Benefit Plan Disclosure [Line Items]	'	'	'
Fair value of plan assets	0	0	'
Property [Member] | Foreign Pension Benefits [Member] | Fair Value [Member] | Pooled Investment Funds [Member]	'	'	'
Defined Benefit Plan Disclosure [Line Items]	'	'	'
Fair value of plan assets	4,925	4,409	'
Property [Member] | Foreign Pension Benefits [Member] | Fair Value, Level 1 [Member] | Pooled Investment Funds [Member]	'	'	'
Defined Benefit Plan Disclosure [Line Items]	'	'	'
Fair value of plan assets	0	0	'
Property [Member] | Foreign Pension Benefits [Member] | Fair Value, Level 2 [Member] | Pooled Investment Funds [Member]	'	'	'
Defined Benefit Plan Disclosure [Line Items]	'	'	'
Fair value of plan assets	4,925	4,409	'
Property [Member] | Foreign Pension Benefits [Member] | Fair Value, Level 3 [Member] | Pooled Investment Funds [Member]	'	'	'
Defined Benefit Plan Disclosure [Line Items]	'	'	'
Fair value of plan assets	$0	$0	'

Recovered_Sheet3

Pension Plans and Other Postretirement Benefits (Expected Benefit Payments) (Details) (USD $)	Dec. 31, 2013
In Thousands, unless otherwise specified
U.S. Pension Benefits [Member]	'
Defined Benefit Plan Disclosure [Line Items]	'
2014	$7,763
2015	9,041
2016	9,843
2017	10,799
2018	11,459
2019 through 2023	69,099
U.S. Postretirement Benefits [Member]	'
Defined Benefit Plan Disclosure [Line Items]	'
2014	3,541
2015	3,442
2016	3,324
2017	3,242
2018	3,112
2019 through 2023	14,231
Foreign Pension Benefits [Member]	'
Defined Benefit Plan Disclosure [Line Items]	'
2014	4,614
2015	4,999
2016	4,138
2017	5,221
2018	4,874
2019 through 2023	$27,761

Other_Income_Expense_Net_Detai

Other Income (Expense), Net (Details) (USD $)	12 Months Ended
In Thousands, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Other Nonoperating Income (Expense) [Abstract]	'	'	'
Other income (expense), net	$7,262	($3,338)	($18,048)

Income_Tax_Expense_Narrative_D

Income Tax Expense (Narrative) (Details) (USD $)	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2013	Dec. 31, 2013
In Millions, unless otherwise specified			Minimum [Member]	Maximum [Member]
Income Tax Contingency [Line Items]	'	'	'	'
Balance of unrecognized tax benefits	$3	$2	'	'
Unrecognized tax benefits amount if recognized, that would affect effective rate	$3	'	'	'
Foreign and United States jurisdictions, period of statutes of limitations, years	'	'	'3 years	'5 years

Income_Tax_Expense_Schedule_Of

Income Tax Expense (Schedule Of Income From Continuing Operations Before Income Taxes) (Details) (USD $)	12 Months Ended
In Thousands, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Income from continuing operations before income tax expense	'	'	'
Domestic	$236,114	$227,172	$195,780
Foreign	105,197	110,396	105,564
Income from continuing operations before income tax expense	$341,311	$337,568	$301,344

Recovered_Sheet4

Income Tax Expense (Schedule of Provision for Income Taxes From Continuing Operations) (Details) (USD $)	12 Months Ended
In Thousands, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Current income taxes	'	'	'
Federal	$62,547	$69,152	$55,397
State	8,782	8,301	9,903
Foreign	22,016	26,300	28,530
Current income taxes	93,345	103,753	93,830
Deferred income taxes	'	'	'
Federal	3,374	-3,339	1,111
State	771	-428	181
Foreign	1,474	310	765
Deferred income taxes	5,619	-3,457	2,057
Total income tax expense from continuing operations	$98,964	$100,296	$95,887

Income_Tax_Expense_Reconciliat

Income Tax Expense (Reconciliation Of U.S. Federal Statutory Rate To Effective Income Tax Rate) (Details)	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Income Tax Disclosure [Abstract]	'	'	'
Federal statutory rate	35.00%	35.00%	35.00%
State taxes, net of federal tax	1.80%	1.50%	1.80%
Foreign operations	-3.60%	-2.40%	-2.00%
Employee savings plan	-0.20%	-1.90%	-0.20%
Research tax credit	-2.10%	0.00%	-0.70%
Domestic manufacturing tax benefit	-2.50%	-2.10%	-2.40%
Other items and adjustments	0.60%	-0.40%	0.30%
Effective income tax rate	29.00%	29.70%	31.80%

Income_Tax_Expense_Deferred_In

Income Tax Expense (Deferred Income Tax Assets And Liabilities) (Details) (USD $)	Dec. 31, 2013	Dec. 31, 2012
In Thousands, unless otherwise specified
Deferred income tax assets	'	'
Future employee benefits	$20,618	$56,643
Environmental and future shutdown reserves	6,412	6,981
Loss on derivatives	8,251	14,305
Trademark expenses	5,404	5,152
Foreign currency translation adjustments	4,883	4,383
Other	5,672	7,589
Deferred income tax assets	51,240	95,053
Deferred income tax liabilities	'	'
Depreciation and amortization	19,135	25,623
Intangibles	1,085	3,029
Undistributed earnings of foreign subsidiaries	1,875	3,851
Other	4,400	5,713
Deferred income tax liabilities	26,495	38,216
Net deferred income tax assets	24,745	56,837
Deferred income tax assets—current	8,267	8,452
Deferred income tax assets—noncurrent	22,961	55,123
Deferred income tax liabilities—noncurrent	$6,483	$6,738

Other_Comprehensive_Income_Los2

Other Comprehensive Income (Loss) and Accumulated Other Comprehensive Loss (Components of Accumulated Other Comprehensive Loss) (Details) (USD $)	12 Months Ended
In Thousands, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]	'	'	'
Pension Plans and Other Postretirement Benefits, Beginning Balance	($96,139)	($76,416)	($51,562)
Derivative Instruments, Beginning Balance	-4,173	-4,736	-4,151
Foreign Currency Translation Adjustments, Beginning Balance	-10,377	-17,944	-18,107
Marketable Securities, Beginning Balance	0	364	0
Accumulated Other Comprehensive Income (Loss), Beginning Balance	-110,689	-98,732	-73,820
Other comprehensive income (loss) before reclassifications, Pension Plans and Other Postretirement Benefits	45,327	-24,291	-27,577
Other comprehensive income (loss) before reclassifications, Derivative Instruments	0	-330	-1,605
Other comprehensive income (loss) before reclassifications, Foreign Currency Translation Adjustments	-5,216	7,567	163
Other comprehensive income (loss) before reclassifications, Marketable Securities	0	676	364
Other comprehensive income (loss) before reclassifications, Accumulated Other Comprehensive Income (Loss)	40,111	-16,378	-28,655
Amounts reclassified from accumulated other comprehensive loss, Pension Plans and Other Postretirement Benefits	6,319	4,568	2,723
Amounts reclassified from accumulated other comprehensive loss, Derivative Instruments	4,173	893	1,020
Amounts reclassified from accumulated other comprehensive loss, Foreign Currency Translation Adjustments	0	0	0
Amounts reclassified from accumulated other comprehensive loss, Marketable Securities	0	-1,040	0
Total reclassifications for the period	10,492	4,421	3,743
Total pension plans and other postretirement benefits	51,646	-19,723	-24,854
Derivative Instruments, Other comprehensive income (loss)	4,173	563	-585
Foreign Currency Translation Adjustments, Other comprehensive income (loss)	-5,216	7,567	163
Marketable Securities, Other comprehensive income (loss)	0	-364	364
Other comprehensive income (loss)	50,603	-11,957	-24,912
Pension Plans and Other Postretirement Benefits, Ending Balance	-44,493	-96,139	-76,416
Derivative Instruments, Ending Balance	0	-4,173	-4,736
Foreign Currency Translation Adjustments, Ending Balance	-15,593	-10,377	-17,944
Marketable Securities, Ending Balance	0	0	364
Accumulated Other Comprehensive Income (Loss), Ending Balance	($60,086)	($110,689)	($98,732)

Other_Comprehensive_Income_Los3

Other Comprehensive Income (Loss) and Accumulated Other Comprehensive Loss (Amounts Reclassified from Accumulated Other Comprehensive Loss) (Details) (USD $)	12 Months Ended
In Thousands, unless otherwise specified	Dec. 31, 2013		Dec. 31, 2012		Dec. 31, 2011
Pension plans and other postretirement benefits:	'		'		'
Amortization of prior service cost	$97	[1]	$27	[1]	$260	[1]
Amortization of actuarial net loss	5,404	[1]	4,066	[1]	2,423	[1]
Settlements and curtailments	785	[1]	436	[1]	0	[1]
Amortization of transition obligation	33	[1]	39	[1]	40	[1]
Total pension plans and other postretirement benefits	6,319		4,568		2,723
Derivative instruments:	'		'		'
Amounts reclassified from accumulated other comprehensive loss, Derivative Instruments	4,173		893		1,020
Marketable securities:	'		'		'
Amounts reclassified from accumulated other comprehensive loss, Marketable Securities	0		-1,040		0
Total reclassifications for the period	10,492		4,421		3,743
Income From Operations of Discontinued Business, Net of Tax [Member] | Mortgage Loan Interest Rate Swap [Member] | Interest Rate Swap [Member]	'		'		'
Derivative instruments:	'		'		'
Amounts reclassified from accumulated other comprehensive loss, Derivative Instruments	1,666		841		968
Discontinued Operations [Member] | Construction Loan Interest Rate Swap [Member] | Interest Rate Swap [Member]	'		'		'
Derivative instruments:	'		'		'
Amounts reclassified from accumulated other comprehensive loss, Derivative Instruments	2,507		52		52
Other income (expense), net [Member]	'		'		'
Marketable securities:	'		'		'
Amounts reclassified from accumulated other comprehensive loss, Marketable Securities	0		-1,040		0
Gain on Sale of Discontinued Business, Net of Tax [Member] | Construction Loan Interest Rate Swap [Member] | Interest Rate Swap [Member]	'		'		'
Derivative instruments:	'		'		'
Amounts reclassified from accumulated other comprehensive loss, Derivative Instruments	$2,500		'		'
[1]	These components of accumulated other comprehensive loss are included in the computation of net periodic benefit cost. See Note 18 for further information.

Segment_and_Geographic_Area_In2

Segment and Geographic Area Information (Schedule Of Revenue And Operating Profit By Segment) (Details) (USD $)

3 Months Ended

12 Months Ended

12 Months Ended

Dec. 31, 2013

Sep. 30, 2013

Jun. 30, 2013

Mar. 31, 2013

Dec. 31, 2012

Sep. 30, 2012

Jun. 30, 2012

Mar. 31, 2012

Dec. 31, 2013

Dec. 31, 2012

Dec. 31, 2011

Dec. 31, 2013

Dec. 31, 2012

Dec. 31, 2011

Dec. 31, 2013

Dec. 31, 2012

Dec. 31, 2011

Dec. 31, 2013

Dec. 31, 2012

Dec. 31, 2011

Dec. 31, 2013

Dec. 31, 2012

Apr. 16, 2012

Dec. 31, 2012

Dec. 31, 2013

Dec. 31, 2012

Dec. 31, 2011

Dec. 31, 2013

Dec. 31, 2012

Dec. 31, 2011

Dec. 31, 2013

Dec. 31, 2012

Dec. 31, 2011

Dec. 31, 2013

Dec. 31, 2012

Dec. 31, 2011

Dec. 31, 2013

Dec. 31, 2012

Dec. 31, 2011

customer

customer

customer

Petroleum Additives [Member]

Petroleum Additives [Member]

Petroleum Additives [Member]

All Other [Member]

All Other [Member]

All Other [Member]

Shell [Member]

Shell [Member]

Shell [Member]

Revolving Credit Facility [Member]

Revolving Credit Facility [Member]

Senior Notes [Member]

Foundry Park I Mortgage Loan [Member]

Lubricant additives [Member]

Lubricant additives [Member]

Lubricant additives [Member]

Fuel additives [Member]

Fuel additives [Member]

Fuel additives [Member]

Sales [Member]

Sales [Member]

Sales [Member]

Operating Segments [Member]

Operating Segments [Member]

Operating Segments [Member]

Corporate [Member]

Corporate [Member]

Corporate [Member]

installments

installments

Petroleum Additives [Member]

Petroleum Additives [Member]

Petroleum Additives [Member]

7.125% Senior Notes [Member]

Petroleum Additives [Member]

Petroleum Additives [Member]

Petroleum Additives [Member]

Petroleum Additives [Member]

Petroleum Additives [Member]

Petroleum Additives [Member]

Shell [Member]

Shell [Member]

Shell [Member]

Segment Reporting Information [Line Items]

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Consolidated revenue

$556,371,000

$580,455,000

$583,779,000

$559,750,000

$513,322,000

$551,187,000

$587,548,000

$559,821,000

$2,280,355,000

[1]

$2,211,878,000

[1]

$2,138,127,000

[1]

$2,271,259,000

$2,200,780,000

$2,126,444,000

$9,096,000

$11,098,000

$11,683,000

$253,000,000

$252,000,000

$246,000,000

'

'

'

'

$1,829,681,000

$1,750,107,000

$1,684,561,000

$441,578,000

$450,673,000

$441,883,000

'

'

'

'

'

'

'

'

'

Petroleum additives before gain on legal settlement, net

'

'

'

'

'

'

'

'

375,291,000

371,964,000

309,626,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Gain on legal settlement, net

'

'

'

'

'

'

'

'

0

[2]

0

[2]

38,656,000

[2]

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Operating (loss) profit

'

'

'

'

'

'

'

'

351,845,000

358,433,000

333,543,000

375,291,000

371,964,000

348,282,000

-1,150,000

6,272,000

2,861,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

374,141,000

378,236,000

351,143,000

'

'

'

Corporate, general, and administrative expenses

'

'

'

'

'

'

'

'

-164,878,000

-154,207,000

-151,599,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

-22,508,000

-20,192,000

-16,709,000

Interest and financing expenses, net

'

'

'

'

'

'

'

'

-17,796,000

-8,435,000

-14,151,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Gain (loss) on interest rate swap agreement

'

'

'

'

'

'

'

'

6,690,000

[3]

-5,346,000

[3]

-17,516,000

[3]

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Loss on early extinguishment of debt

'

'

'

'

'

'

'

'

0

[4]

-9,092,000

[4]

0

[4]

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Other income (expense), net

'

'

'

'

'

'

'

'

784,000

2,397,000

-1,423,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Income from continuing operations before income tax expense

'

'

'

'

'

'

'

'

341,311,000

337,568,000

301,344,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Number of customers that exceeded threshold percentage

'

'

'

'

'

'

'

'

1

1

1

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Percentage of consolidated revenue

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

11.00%

11.00%

11.00%

'

'

'

'

'

'

Settlement agreement aggregate amount

'

'

'

'

'

'

'

'

'

'

45,000,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Proceeds from legal settlements

'

'

'

'

'

'

'

'

5,100,000

5,050,000

25,000,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Settlement agreement, stock issued for settlement, value

'

'

'

'

'

'

'

'

'

'

5,000,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Settlement agreement, stock issued for settlement, shares

'

'

'

'

'

'

'

'

'

'

195,313

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Settlement agreement, promissory notes issued, amount

'

'

'

'

'

'

'

'

'

'

15,000,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Number of installments in promissory note payable

'

'

'

'

'

'

'

'

'

'

3

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Annual installments amount

'

'

'

'

'

'

'

'

'

'

5,000,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Percentage of simple interest on promissory note

'

'

'

'

'

'

'

'

'

'

1.00%

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Number Of Installments Of Promissory Note Paid

'

'

'

'

'

'

'

'

2

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Maximum borrowing capacity under the revolving credit facility

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

650,000,000

650,000,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Term of credit facility, years

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'5 years

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Senior notes, interest rate

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

7.13%

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Loss on early extinguishment of debt including discontinued operations

'

'

'

'

'

'

'

'

$0

($9,932,000)

$0

'

'

'

'

'

'

'

'

'

'

'

'

($1,000,000)

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

[1]

Net sales to one customer of our petroleum additives segment exceeded 10% of consolidated revenue in 2013, 2012, and 2011. Sales to Shell amounted to $253 million (11% of consolidated revenue) in 2013, $252 million (11% of consolidated revenue) in 2012, and $246 million (11% of consolidated revenue) in 2011. These sales represent a wide range of products sold to this customer in multiple regions of the world.

[2]

For 2011, the petroleum additives segment included a net gain of $39 million related to a legal settlement. On September 13, 2011, we signed a settlement agreement with Innospec Inc. and its subsidiaries, Alcor Chemie Vertriebs GmbH and Innospec Ltd. (collectively, Innospec) which provided for mutual releases of the parties and dismissal of the actions with prejudice. Under the settlement agreement, Innospec agreed to pay NewMarket an aggregate amount of approximately $45 million in a combination of cash, a promissory note, and stock, of which $25 million was paid in cash on September 20, 2011 and $5 million was paid in the form of 195,313 shares of unregistered Innospec Inc. common stock. Fifteen million dollars is payable in three equal annual installments of $5 million under the promissory note, which bears simple interest at 1% per year. The first two installments were paid in September 2012 and September 2013. The gain is net of expenses related to the settlement of the lawsuit.

[3]

The gain (loss) on interest rate swap agreement represents the change, since the beginning of the reporting period, in the fair value of an interest rate swap which we entered into on June 25, 2009. We are not using hedge accounting to record the interest rate swap, and accordingly, any change in the fair value is immediately recognized in earnings.

[4]

In March 2012, we entered into a $650 million five-year unsecured revolving credit facility. During 2012, we used a portion of the $650 million revolving credit facility to fund the early redemption of all of our then outstanding 7.125% senior notes, as well as to repay the outstanding principal amount on the mortgage loan. As a result, we recognized a loss on early extinguishment of debt of $10 million during 2012 from accelerated amortization of financing fees associated with the prior revolving credit facility, the 7.125% senior notes, and the mortgage loan, as well as costs associated with redeeming the 7.125% senior notes prior to maturity.

Segment_and_Geographic_Area_In3

Segment and Geographic Area Information (Schedule Of Asset Information By Segment) (Details) (USD $)	12 Months Ended
In Thousands, unless otherwise specified	Dec. 31, 2013		Dec. 31, 2012		Dec. 31, 2011		Dec. 31, 2010
Segment Reporting Information [Line Items]	'		'		'		'
Total assets	$1,327,274		$1,264,248		$1,191,662		'
Cash and cash equivalents	238,703		89,129		50,370		49,192
Other accounts receivable	309,847		297,055		'		'
Deferred income taxes	24,745		56,837		'		'
Deferred income taxes	31,228		63,575		43,066		'
Property, plant, and equipment, net	285,036		358,371		352,966		'
Prepaid pension cost	55,087		12,710		11,494		'
Deferred charges and other assets	43,552		72,007		'		'
Additions to long-lived assets	58,476		38,753		53,515		'
Depreciation and amortization	46,144		43,389		43,352		'
Petroleum Additives [Member]	'		'		'		'
Segment Reporting Information [Line Items]	'		'		'		'
Total assets	889,944		873,277		854,134		'
Additions to long-lived assets	54,187		36,873		50,760		'
Depreciation and amortization	38,750		36,197		36,604		'
All Other [Member]	'		'		'		'
Segment Reporting Information [Line Items]	'		'		'		'
Total assets	12,170		14,018		14,125		'
Additions to long-lived assets	7		0		30		'
Depreciation and amortization	4,683	[1]	4,959	[1]	4,203	[1]	'
Corporate [Member]	'		'		'		'
Segment Reporting Information [Line Items]	'		'		'		'
Other accounts receivable	1,960	[2]	11,806	[2]	173	[2]	'
Prepaid expenses and other current assets	32,979		18,173		36,943		'
Property, plant, and equipment, net	28,242	[2]	122,350	[2]	125,678	[2]	'
Deferred charges and other assets	36,961	[2]	59,210	[2]	55,679	[2]	'
Additions to long-lived assets	4,282		1,880		2,725		'
Depreciation and amortization	2,711		2,233		2,545		'
Operating Segments [Member]	'		'		'		'
Segment Reporting Information [Line Items]	'		'		'		'
Total assets	902,114		887,295		868,259		'
Income From Operations of Discontinued Business, Net of Tax [Member] | All Other [Member]	'		'		'		'
Segment Reporting Information [Line Items]	'		'		'		'
Depreciation and amortization	$5,000		$5,000		$4,000		'
[1]	This amount includes depreciation and amortization expense of Foundry Park I, which was $5 million for 2013, $5 million for 2012, and $4 million for 2011. These amounts are included in income from operations of discontinued business, net of tax in the Consolidated Statements of Income.
[2]	Amounts previously reported for 2012 and 2011 have been reclassified to include the assets of the discontinued operation resulting from the July 2013 sale of the assets of Foundry Park I.

Segment_and_Geographic_Area_In4

Segment and Geographic Area Information (Schedule of Revenue, Total Assets And Long-Lived Assets by Geographic Area) (Details) (USD $)

3 Months Ended

12 Months Ended

In Thousands, unless otherwise specified

Dec. 31, 2013

Sep. 30, 2013

Jun. 30, 2013

Mar. 31, 2013

Dec. 31, 2012

Sep. 30, 2012

Jun. 30, 2012

Mar. 31, 2012

Dec. 31, 2013

Dec. 31, 2012

Dec. 31, 2011

Segment Reporting Information [Line Items]

'

'

'

'

'

'

'

'

'

'

'

Consolidated revenue

$556,371

$580,455

$583,779

$559,750

$513,322

$551,187

$587,548

$559,821

$2,280,355

[1]

$2,211,878

[1]

$2,138,127

[1]

Total assets

1,327,274

'

'

'

1,264,248

'

'

'

1,327,274

1,264,248

1,191,662

Long-lived assets

285,036

'

'

'

358,371

'

'

'

285,036

358,371

352,966

United States [Member]

'

'

'

'

'

'

'

'

'

'

'

Segment Reporting Information [Line Items]

'

'

'

'

'

'

'

'

'

'

'

Consolidated revenue

'

'

'

'

'

'

'

'

806,462

799,754

756,284

Total assets

637,386

'

'

'

653,069

'

'

'

637,386

653,069

642,976

Long-lived assets

165,944

'

'

'

255,150

'

'

'

165,944

255,150

256,998

Europe, Middle East, Africa, India [Member]

'

'

'

'

'

'

'

'

'

'

'

Segment Reporting Information [Line Items]

'

'

'

'

'

'

'

'

'

'

'

Consolidated revenue

'

'

'

'

'

'

'

'

759,918

692,132

727,632

Asia Pacific [Member]

'

'

'

'

'

'

'

'

'

'

'

Segment Reporting Information [Line Items]

'

'

'

'

'

'

'

'

'

'

'

Consolidated revenue

'

'

'

'

'

'

'

'

462,080

440,589

405,534

Other foreign [Member]

'

'

'

'

'

'

'

'

'

'

'

Segment Reporting Information [Line Items]

'

'

'

'

'

'

'

'

'

'

'

Consolidated revenue

'

'

'

'

'

'

'

'

251,895

279,403

248,677

Foreign [Member]

'

'

'

'

'

'

'

'

'

'

'

Segment Reporting Information [Line Items]

'

'

'

'

'

'

'

'

'

'

'

Total assets

689,888

'

'

'

611,179

'

'

'

689,888

611,179

548,686

Long-lived assets

$119,092

'

'

'

$103,221

'

'

'

$119,092

$103,221

$95,968

[1]

Net sales to one customer of our petroleum additives segment exceeded 10% of consolidated revenue in 2013, 2012, and 2011. Sales to Shell amounted to $253 million (11% of consolidated revenue) in 2013, $252 million (11% of consolidated revenue) in 2012, and $246 million (11% of consolidated revenue) in 2011. These sales represent a wide range of products sold to this customer in multiple regions of the world.

Selected_Quarterly_Consolidate2

Selected Quarterly Consolidated Financial Data (unaudited) (Schedule Of Selected Quarterly Consolidated Financial Data) (Details) (USD $)	3 Months Ended								12 Months Ended
In Thousands, except Per Share data, unless otherwise specified	Dec. 31, 2013	Sep. 30, 2013	Jun. 30, 2013	Mar. 31, 2013	Dec. 31, 2012	Sep. 30, 2012	Jun. 30, 2012	Mar. 31, 2012	Dec. 31, 2013		Dec. 31, 2012		Dec. 31, 2011
Selected Quarterly Financial Information [Abstract]	'	'	'	'	'	'	'	'	'		'		'
Net sales	$556,371	$580,455	$583,779	$559,750	$513,322	$551,187	$587,548	$559,821	$2,280,355	[1]	$2,211,878	[1]	$2,138,127	[1]
Gross profit	151,638	163,823	169,428	168,407	138,861	160,269	163,609	167,746	653,296		630,485		551,982
Income from continuing operations	54,001	57,021	64,384	66,941	52,239	63,823	55,063	66,147	242,347		237,272		205,457
Discontinued operations	0	21,875	-374	894	824	892	205	400	'		'		'
Net income	$54,001	$78,896	$64,010	$67,835	$53,063	$64,715	$55,268	$66,547	$264,742		$239,593		$206,907
Earnings per share - basic and diluted:	'	'	'	'	'	'	'	'	'		'		'
Income from continuing operations (in dollars per share)	$4.08	$4.29	$4.84	$5	$3.88	$4.76	$4.11	$4.93	'		'		'
Income from discontinued operations (in dollars per share)	$0	$1.65	($0.03)	$0.07	$0.06	$0.07	$0.01	$0.03	'		'		'
Net income (in dollars per share)	$4.08	$5.94	$4.81	$5.07	$3.94	$4.83	$4.12	$4.96	'		'		'
[1]	Net sales to one customer of our petroleum additives segment exceeded 10% of consolidated revenue in 2013, 2012, and 2011. Sales to Shell amounted to $253 million (11% of consolidated revenue) in 2013, $252 million (11% of consolidated revenue) in 2012, and $246 million (11% of consolidated revenue) in 2011. These sales represent a wide range of products sold to this customer in multiple regions of the world.

Consolidating_Financial_Inform2

Consolidating Financial Information (Narrative) (Details)	Dec. 31, 2013
4.10% Senior Notes [Member] | Senior Notes [Member]	'
Senior notes, interest rate	4.10%
Guarantor Subsidiaries [Member]	'
Percent ownership interest by Parent Company	100.00%
Non-Guarantor Subsidiaries [Member]	'
Percent ownership interest by Parent Company	100.00%

Consolidating_Financial_Inform3

Consolidating Financial Information (Consolidating Statements of Income and Comprehensive Income) (Details) (USD $)

3 Months Ended

12 Months Ended

In Thousands, unless otherwise specified

Dec. 31, 2013

Sep. 30, 2013

Jun. 30, 2013

Mar. 31, 2013

Dec. 31, 2012

Sep. 30, 2012

Jun. 30, 2012

Mar. 31, 2012

Dec. 31, 2013

Dec. 31, 2012

Dec. 31, 2011

Net sales

$556,371

$580,455

$583,779

$559,750

$513,322

$551,187

$587,548

$559,821

$2,280,355

[1]

$2,211,878

[1]

$2,138,127

[1]

Cost of goods sold

'

'

'

'

'

'

'

'

1,627,059

1,581,393

1,586,145

Gross profit

151,638

163,823

169,428

168,407

138,861

160,269

163,609

167,746

653,296

630,485

551,982

Selling, general, and administrative expenses

'

'

'

'

'

'

'

'

164,878

154,207

151,599

Research, development, and testing expenses

'

'

'

'

'

'

'

'

136,573

117,845

105,496

Gain on legal settlement, net

'

'

'

'

'

'

'

'

0

[2]

0

[2]

38,656

[2]

Operating (loss) profit

'

'

'

'

'

'

'

'

351,845

358,433

333,543

Interest and financing expenses, net

'

'

'

'

'

'

'

'

17,796

8,435

14,151

Loss on early extinguishment of debt

'

'

'

'

'

'

'

'

0

[3]

9,092

[3]

0

[3]

Other income (expense), net

'

'

'

'

'

'

'

'

7,262

-3,338

-18,048

(Loss) income from continuing operations before income taxes and equity income of subsidiaries

'

'

'

'

'

'

'

'

341,311

337,568

301,344

Income tax (benefit) expense

'

'

'

'

'

'

'

'

98,964

100,296

95,887

Equity income of subsidiaries

'

'

'

'

'

'

'

'

0

0

0

Income from continuing operations

54,001

57,021

64,384

66,941

52,239

63,823

55,063

66,147

242,347

237,272

205,457

Discontinued operations:

'

'

'

'

'

'

'

'

'

'

'

Gain on sale of discontinued business, net of tax

'

'

'

'

'

'

'

'

21,855

0

0

Income from operations of discontinued business, net of tax

'

'

'

'

'

'

'

'

540

2,321

1,450

Net income

54,001

78,896

64,010

67,835

53,063

64,715

55,268

66,547

264,742

239,593

206,907

Other comprehensive income (loss)

'

'

'

'

'

'

'

'

50,603

-11,957

-24,912

Comprehensive income

'

'

'

'

'

'

'

'

315,345

227,636

181,995

Parent Company [Member]

'

'

'

'

'

'

'

'

'

'

'

Net sales

'

'

'

'

'

'

'

'

0

0

0

Cost of goods sold

'

'

'

'

'

'

'

'

0

0

0

Gross profit

'

'

'

'

'

'

'

'

0

0

0

Selling, general, and administrative expenses

'

'

'

'

'

'

'

'

6,869

6,089

6,158

Research, development, and testing expenses

'

'

'

'

'

'

'

'

0

0

0

Gain on legal settlement, net

'

'

'

'

'

'

'

'

'

'

0

Operating (loss) profit

'

'

'

'

'

'

'

'

-6,869

-6,089

-6,158

Interest and financing expenses, net

'

'

'

'

'

'

'

'

18,303

8,432

14,397

Loss on early extinguishment of debt

'

'

'

'

'

'

'

'

'

9,092

'

Other income (expense), net

'

'

'

'

'

'

'

'

6,754

-5,301

-18,558

(Loss) income from continuing operations before income taxes and equity income of subsidiaries

'

'

'

'

'

'

'

'

-18,418

-28,914

-39,113

Income tax (benefit) expense

'

'

'

'

'

'

'

'

-5,476

-17,984

-15,399

Equity income of subsidiaries

'

'

'

'

'

'

'

'

277,684

250,523

230,621

Income from continuing operations

'

'

'

'

'

'

'

'

264,742

239,593

206,907

Discontinued operations:

'

'

'

'

'

'

'

'

'

'

'

Gain on sale of discontinued business, net of tax

'

'

'

'

'

'

'

'

0

'

'

Income from operations of discontinued business, net of tax

'

'

'

'

'

'

'

'

0

0

0

Net income

'

'

'

'

'

'

'

'

264,742

239,593

206,907

Other comprehensive income (loss)

'

'

'

'

'

'

'

'

50,603

-11,957

-24,912

Comprehensive income

'

'

'

'

'

'

'

'

315,345

227,636

181,995

Guarantor Subsidiaries [Member]

'

'

'

'

'

'

'

'

'

'

'

Net sales

'

'

'

'

'

'

'

'

896,593

905,043

836,917

Cost of goods sold

'

'

'

'

'

'

'

'

457,698

443,896

457,866

Gross profit

'

'

'

'

'

'

'

'

438,895

461,147

379,051

Selling, general, and administrative expenses

'

'

'

'

'

'

'

'

91,230

115,450

106,163

Research, development, and testing expenses

'

'

'

'

'

'

'

'

95,114

86,494

77,569

Gain on legal settlement, net

'

'

'

'

'

'

'

'

'

'

38,656

Operating (loss) profit

'

'

'

'

'

'

'

'

252,551

259,203

233,975

Interest and financing expenses, net

'

'

'

'

'

'

'

'

-3,631

-3,842

-3,402

Loss on early extinguishment of debt

'

'

'

'

'

'

'

'

'

0

'

Other income (expense), net

'

'

'

'

'

'

'

'

38

1,690

1,794

(Loss) income from continuing operations before income taxes and equity income of subsidiaries

'

'

'

'

'

'

'

'

256,220

264,735

239,171

Income tax (benefit) expense

'

'

'

'

'

'

'

'

80,958

93,205

82,049

Equity income of subsidiaries

'

'

'

'

'

'

'

'

0

0

0

Income from continuing operations

'

'

'

'

'

'

'

'

175,262

171,530

157,122

Discontinued operations:

'

'

'

'

'

'

'

'

'

'

'

Gain on sale of discontinued business, net of tax

'

'

'

'

'

'

'

'

0

'

'

Income from operations of discontinued business, net of tax

'

'

'

'

'

'

'

'

0

0

0

Net income

'

'

'

'

'

'

'

'

175,262

171,530

157,122

Other comprehensive income (loss)

'

'

'

'

'

'

'

'

11,791

860

-5,521

Comprehensive income

'

'

'

'

'

'

'

'

187,053

172,390

151,601

Non-Guarantor Subsidiaries [Member]

'

'

'

'

'

'

'

'

'

'

'

Net sales

'

'

'

'

'

'

'

'

1,383,762

1,306,835

1,301,210

Cost of goods sold

'

'

'

'

'

'

'

'

1,169,361

1,137,497

1,128,279

Gross profit

'

'

'

'

'

'

'

'

214,401

169,338

172,931

Selling, general, and administrative expenses

'

'

'

'

'

'

'

'

66,779

32,668

39,278

Research, development, and testing expenses

'

'

'

'

'

'

'

'

41,459

31,351

27,927

Gain on legal settlement, net

'

'

'

'

'

'

'

'

'

'

0

Operating (loss) profit

'

'

'

'

'

'

'

'

106,163

105,319

105,726

Interest and financing expenses, net

'

'

'

'

'

'

'

'

3,124

3,845

3,156

Loss on early extinguishment of debt

'

'

'

'

'

'

'

'

'

0

'

Other income (expense), net

'

'

'

'

'

'

'

'

470

273

-1,284

(Loss) income from continuing operations before income taxes and equity income of subsidiaries

'

'

'

'

'

'

'

'

103,509

101,747

101,286

Income tax (benefit) expense

'

'

'

'

'

'

'

'

23,482

25,075

29,237

Equity income of subsidiaries

'

'

'

'

'

'

'

'

0

0

0

Income from continuing operations

'

'

'

'

'

'

'

'

80,027

76,672

72,049

Discontinued operations:

'

'

'

'

'

'

'

'

'

'

'

Gain on sale of discontinued business, net of tax

'

'

'

'

'

'

'

'

21,855

'

'

Income from operations of discontinued business, net of tax

'

'

'

'

'

'

'

'

540

2,321

1,450

Net income

'

'

'

'

'

'

'

'

102,422

78,993

73,499

Other comprehensive income (loss)

'

'

'

'

'

'

'

'

-745

-771

670

Comprehensive income

'

'

'

'

'

'

'

'

101,677

78,222

74,169

Total Consolidating Adjustments [Member]

'

'

'

'

'

'

'

'

'

'

'

Net sales

'

'

'

'

'

'

'

'

0

0

0

Cost of goods sold

'

'

'

'

'

'

'

'

0

0

0

Gross profit

'

'

'

'

'

'

'

'

0

0

0

Selling, general, and administrative expenses

'

'

'

'

'

'

'

'

0

0

0

Research, development, and testing expenses

'

'

'

'

'

'

'

'

0

0

0

Gain on legal settlement, net

'

'

'

'

'

'

'

'

'

'

0

Operating (loss) profit

'

'

'

'

'

'

'

'

0

0

0

Interest and financing expenses, net

'

'

'

'

'

'

'

'

0

0

0

Loss on early extinguishment of debt

'

'

'

'

'

'

'

'

'

0

'

Other income (expense), net

'

'

'

'

'

'

'

'

0

0

0

(Loss) income from continuing operations before income taxes and equity income of subsidiaries

'

'

'

'

'

'

'

'

0

0

0

Income tax (benefit) expense

'

'

'

'

'

'

'

'

0

0

0

Equity income of subsidiaries

'

'

'

'

'

'

'

'

-277,684

-250,523

-230,621

Income from continuing operations

'

'

'

'

'

'

'

'

-277,684

-250,523

-230,621

Discontinued operations:

'

'

'

'

'

'

'

'

'

'

'

Gain on sale of discontinued business, net of tax

'

'

'

'

'

'

'

'

0

'

'

Income from operations of discontinued business, net of tax

'

'

'

'

'

'

'

'

0

0

0

Net income

'

'

'

'

'

'

'

'

-277,684

-250,523

-230,621

Other comprehensive income (loss)

'

'

'

'

'

'

'

'

-11,046

-89

4,851

Comprehensive income

'

'

'

'

'

'

'

'

($288,730)

($250,612)

($225,770)

[1]

Net sales to one customer of our petroleum additives segment exceeded 10% of consolidated revenue in 2013, 2012, and 2011. Sales to Shell amounted to $253 million (11% of consolidated revenue) in 2013, $252 million (11% of consolidated revenue) in 2012, and $246 million (11% of consolidated revenue) in 2011. These sales represent a wide range of products sold to this customer in multiple regions of the world.

[2]

For 2011, the petroleum additives segment included a net gain of $39 million related to a legal settlement. On September 13, 2011, we signed a settlement agreement with Innospec Inc. and its subsidiaries, Alcor Chemie Vertriebs GmbH and Innospec Ltd. (collectively, Innospec) which provided for mutual releases of the parties and dismissal of the actions with prejudice. Under the settlement agreement, Innospec agreed to pay NewMarket an aggregate amount of approximately $45 million in a combination of cash, a promissory note, and stock, of which $25 million was paid in cash on September 20, 2011 and $5 million was paid in the form of 195,313 shares of unregistered Innospec Inc. common stock. Fifteen million dollars is payable in three equal annual installments of $5 million under the promissory note, which bears simple interest at 1% per year. The first two installments were paid in September 2012 and September 2013. The gain is net of expenses related to the settlement of the lawsuit.

[3]

In March 2012, we entered into a $650 million five-year unsecured revolving credit facility. During 2012, we used a portion of the $650 million revolving credit facility to fund the early redemption of all of our then outstanding 7.125% senior notes, as well as to repay the outstanding principal amount on the mortgage loan. As a result, we recognized a loss on early extinguishment of debt of $10 million during 2012 from accelerated amortization of financing fees associated with the prior revolving credit facility, the 7.125% senior notes, and the mortgage loan, as well as costs associated with redeeming the 7.125% senior notes prior to maturity.

Consolidating_Financial_Inform4

Consolidating Financial Information (Consolidating Balance Sheets) (Details) (USD $)	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
In Thousands, unless otherwise specified
ASSETS	'	'	'	'
Cash and cash equivalents	$238,703	$89,129	$50,370	$49,192
Trade and other accounts receivable, net	309,847	297,055	'	'
Amounts due from affiliated companies	0	0	'	'
Inventories	307,518	322,674	'	'
Deferred income taxes	8,267	8,452	'	'
Prepaid expenses and other current assets	32,984	18,185	'	'
Total current assets	897,319	735,495	'	'
Amounts due from affiliated companies	0	0	'	'
Property, plant, and equipment, at cost	985,196	1,070,967	'	'
Less accumulated depreciation and amortization	700,160	712,596	'	'
Net property, plant, and equipment	285,036	358,371	352,966	'
Investment in consolidated subsidiaries	0	0	'	'
Prepaid pension cost	55,087	12,710	11,494	'
Deferred income taxes	22,961	55,123	'	'
Intangibles (net of amortization) and goodwill	23,319	30,542	'	'
Deferred charges and other assets	43,552	72,007	'	'
Total assets	1,327,274	1,264,248	1,191,662	'
LIABILITIES AND SHAREHOLDERS’ EQUITY	'	'	'	'
Accounts payable	134,132	119,298	'	'
Accrued expenses	77,992	79,061	'	'
Dividends payable	12,996	0	'	'
Amounts due to affiliated companies	0	0	'	'
Income taxes payable	11,419	10,024	'	'
Other current liabilities	11,075	8,288	'	'
Total current liabilities	247,614	216,671	'	'
Long-term debt	349,467	424,407	'	'
Amounts due to affiliated companies	0	0	'	'
Other noncurrent liabilities	157,745	220,965	'	'
Total liabilities	754,826	862,043	'	'
Shareholders’ equity:	'	'	'	'
Common stock and paid-in capital	0	721	'	'
Accumulated other comprehensive loss	-60,086	-110,689	-98,732	-73,820
Retained earnings	632,534	512,173	'	'
Total shareholders' equity	572,448	402,205	549,593	491,640
Total liabilities and shareholders' equity	1,327,274	1,264,248	'	'
Parent Company [Member]	'	'	'	'
ASSETS	'	'	'	'
Cash and cash equivalents	1,038	5,001	17	17
Trade and other accounts receivable, net	1,512	4,347	'	'
Amounts due from affiliated companies	0	0	'	'
Inventories	0	0	'	'
Deferred income taxes	2,600	2,555	'	'
Prepaid expenses and other current assets	13,055	65	'	'
Total current assets	18,205	11,968	'	'
Amounts due from affiliated companies	0	58,935	'	'
Property, plant, and equipment, at cost	0	0	'	'
Less accumulated depreciation and amortization	0	0	'	'
Net property, plant, and equipment	0	0	'	'
Investment in consolidated subsidiaries	955,560	866,676	'	'
Prepaid pension cost	23,276	0	'	'
Deferred income taxes	20,999	53,057	'	'
Intangibles (net of amortization) and goodwill	0	0	'	'
Deferred charges and other assets	33,257	46,286	'	'
Total assets	1,051,297	1,036,922	'	'
LIABILITIES AND SHAREHOLDERS’ EQUITY	'	'	'	'
Accounts payable	6	206	'	'
Accrued expenses	10,788	8,366	'	'
Dividends payable	12,996	'	'	'
Amounts due to affiliated companies	23,183	63,021	'	'
Income taxes payable	0	0	'	'
Other current liabilities	0	0	'	'
Total current liabilities	46,973	71,593	'	'
Long-term debt	349,467	424,407	'	'
Amounts due to affiliated companies	0	0	'	'
Other noncurrent liabilities	82,409	138,717	'	'
Total liabilities	478,849	634,717	'	'
Shareholders’ equity:	'	'	'	'
Common stock and paid-in capital	0	721	'	'
Accumulated other comprehensive loss	-60,086	-110,689	'	'
Retained earnings	632,534	512,173	'	'
Total shareholders' equity	572,448	402,205	'	'
Total liabilities and shareholders' equity	1,051,297	1,036,922	'	'
Guarantor Subsidiaries [Member]	'	'	'	'
ASSETS	'	'	'	'
Cash and cash equivalents	102,205	3,956	3,459	2,497
Trade and other accounts receivable, net	108,908	113,131	'	'
Amounts due from affiliated companies	139,710	142,125	'	'
Inventories	115,442	117,638	'	'
Deferred income taxes	4,919	5,062	'	'
Prepaid expenses and other current assets	17,886	16,248	'	'
Total current assets	489,070	398,160	'	'
Amounts due from affiliated companies	113,076	107,236	'	'
Property, plant, and equipment, at cost	692,024	664,912	'	'
Less accumulated depreciation and amortization	555,805	536,700	'	'
Net property, plant, and equipment	136,219	128,212	'	'
Investment in consolidated subsidiaries	0	0	'	'
Prepaid pension cost	16,092	0	'	'
Deferred income taxes	0	0	'	'
Intangibles (net of amortization) and goodwill	17,036	23,785	'	'
Deferred charges and other assets	9,014	15,670	'	'
Total assets	780,507	673,063	'	'
LIABILITIES AND SHAREHOLDERS’ EQUITY	'	'	'	'
Accounts payable	86,649	75,239	'	'
Accrued expenses	46,401	50,763	'	'
Dividends payable	0	'	'	'
Amounts due to affiliated companies	77,098	93,330	'	'
Income taxes payable	0	1,214	'	'
Other current liabilities	7,828	3,906	'	'
Total current liabilities	217,976	224,452	'	'
Long-term debt	0	0	'	'
Amounts due to affiliated companies	8,025	0	'	'
Other noncurrent liabilities	41,014	44,755	'	'
Total liabilities	267,015	269,207	'	'
Shareholders’ equity:	'	'	'	'
Common stock and paid-in capital	260,776	260,840	'	'
Accumulated other comprehensive loss	-5,786	-17,578	'	'
Retained earnings	258,502	160,594	'	'
Total shareholders' equity	513,492	403,856	'	'
Total liabilities and shareholders' equity	780,507	673,063	'	'
Non-Guarantor Subsidiaries [Member]	'	'	'	'
ASSETS	'	'	'	'
Cash and cash equivalents	135,460	80,172	46,894	46,678
Trade and other accounts receivable, net	199,431	179,577	'	'
Amounts due from affiliated companies	77,098	97,784	'	'
Inventories	192,076	205,036	'	'
Deferred income taxes	748	835	'	'
Prepaid expenses and other current assets	2,043	1,872	'	'
Total current assets	606,856	565,276	'	'
Amounts due from affiliated companies	8,025	0	'	'
Property, plant, and equipment, at cost	293,172	406,055	'	'
Less accumulated depreciation and amortization	144,355	175,896	'	'
Net property, plant, and equipment	148,817	230,159	'	'
Investment in consolidated subsidiaries	0	0	'	'
Prepaid pension cost	15,719	12,710	'	'
Deferred income taxes	7,984	6,477	'	'
Intangibles (net of amortization) and goodwill	6,283	6,757	'	'
Deferred charges and other assets	1,281	10,051	'	'
Total assets	794,965	831,430	'	'
LIABILITIES AND SHAREHOLDERS’ EQUITY	'	'	'	'
Accounts payable	47,477	43,853	'	'
Accrued expenses	20,803	19,932	'	'
Dividends payable	0	'	'	'
Amounts due to affiliated companies	116,527	83,558	'	'
Income taxes payable	11,423	8,810	'	'
Other current liabilities	3,247	4,382	'	'
Total current liabilities	199,477	160,535	'	'
Long-term debt	0	0	'	'
Amounts due to affiliated companies	113,076	166,171	'	'
Other noncurrent liabilities	40,344	41,904	'	'
Total liabilities	352,897	368,610	'	'
Shareholders’ equity:	'	'	'	'
Common stock and paid-in capital	126,661	217,407	'	'
Accumulated other comprehensive loss	-40,360	-39,612	'	'
Retained earnings	355,767	285,025	'	'
Total shareholders' equity	442,068	462,820	'	'
Total liabilities and shareholders' equity	794,965	831,430	'	'
Total Consolidating Adjustments [Member]	'	'	'	'
ASSETS	'	'	'	'
Cash and cash equivalents	0	0	0	0
Trade and other accounts receivable, net	-4	0	'	'
Amounts due from affiliated companies	-216,808	-239,909	'	'
Inventories	0	0	'	'
Deferred income taxes	0	0	'	'
Prepaid expenses and other current assets	0	0	'	'
Total current assets	-216,812	-239,909	'	'
Amounts due from affiliated companies	-121,101	-166,171	'	'
Property, plant, and equipment, at cost	0	0	'	'
Less accumulated depreciation and amortization	0	0	'	'
Net property, plant, and equipment	0	0	'	'
Investment in consolidated subsidiaries	-955,560	-866,676	'	'
Prepaid pension cost	0	0	'	'
Deferred income taxes	-6,022	-4,411	'	'
Intangibles (net of amortization) and goodwill	0	0	'	'
Deferred charges and other assets	0	0	'	'
Total assets	-1,299,495	-1,277,167	'	'
LIABILITIES AND SHAREHOLDERS’ EQUITY	'	'	'	'
Accounts payable	0	0	'	'
Accrued expenses	0	0	'	'
Dividends payable	0	'	'	'
Amounts due to affiliated companies	-216,808	-239,909	'	'
Income taxes payable	-4	0	'	'
Other current liabilities	0	0	'	'
Total current liabilities	-216,812	-239,909	'	'
Long-term debt	0	0	'	'
Amounts due to affiliated companies	-121,101	-166,171	'	'
Other noncurrent liabilities	-6,022	-4,411	'	'
Total liabilities	-343,935	-410,491	'	'
Shareholders’ equity:	'	'	'	'
Common stock and paid-in capital	-387,437	-478,247	'	'
Accumulated other comprehensive loss	46,146	57,190	'	'
Retained earnings	-614,269	-445,619	'	'
Total shareholders' equity	-955,560	-866,676	'	'
Total liabilities and shareholders' equity	($1,299,495)	($1,277,167)	'	'

Consolidating_Financial_Inform5

Consolidating Financial Information (Condensed Consolidating Statements of Cash Flows) (Details) (USD $)	12 Months Ended
In Thousands, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Cash provided from (used in) operating activities	$277,934	$272,811	$184,598
Cash flows from investing activities:	'	'	'
Capital expenditures	-58,476	-38,753	-53,515
Proceeds from sale of discontinued business	140,011	0	0
Deposits for interest rate swap	-12,514	-22,913	-46,467
Return of deposits for interest rate swap	24,370	21,260	33,600
Return of investment in subsidiary	0	'	'
Other, net	-4,927	1,620	-4,574
Cash provided from (used in) investing activities	88,464	-38,786	-70,956
Cash flows from financing activities:	'	'	'
Net (repayments) borrowings under revolving credit facility	-75,000	53,000	18,000
Issuance of 4.10% senior notes	0	349,405	0
Repayment of 7.125% senior notes	0	-150,000	0
Repayment of Foundry Park I mortgage loan	0	-63,544	-2,731
Net (repayments) borrowings under lines of credit	-1,135	-3,641	6,529
Dividends paid	-50,368	-375,681	-32,588
Debt issuance costs	-1,145	-6,485	-3,233
Repurchases of common stock	-92,195	0	-98,093
Issuance of intercompany note payable, net	0	0	0
Repayment of intercompany note payable, net	0	0	0
Financing from affiliated companies	0	0	0
Other, net	0	0	1,028
Cash provided from (used in) financing activities	-219,843	-196,946	-111,088
Effect of foreign exchange on cash and cash equivalents	3,019	1,680	-1,376
(Decrease) increase in cash and cash equivalents	149,574	38,759	1,178
Cash and cash equivalents at beginning of year	89,129	50,370	49,192
Cash and cash equivalents at end of year	238,703	89,129	50,370
Parent Company [Member]	'	'	'
Cash provided from (used in) operating activities	149,278	320,504	15,179
Cash flows from investing activities:	'	'	'
Capital expenditures	0	0	0
Proceeds from sale of discontinued business	0	'	'
Deposits for interest rate swap	-12,514	-22,913	-46,467
Return of deposits for interest rate swap	24,370	21,260	33,600
Return of investment in subsidiary	45,174	'	'
Other, net	-4,927	-4,683	-4,574
Cash provided from (used in) investing activities	52,103	-6,336	-17,441
Cash flows from financing activities:	'	'	'
Net (repayments) borrowings under revolving credit facility	-75,000	53,000	18,000
Issuance of 4.10% senior notes	'	349,405	'
Repayment of 7.125% senior notes	'	-150,000	'
Repayment of Foundry Park I mortgage loan	'	0	0
Net (repayments) borrowings under lines of credit	0	0	0
Dividends paid	-50,368	-375,681	-32,588
Debt issuance costs	-1,145	-6,485	-3,233
Repurchases of common stock	-92,195	'	-98,093
Issuance of intercompany note payable, net	0	-65,500	0
Repayment of intercompany note payable, net	58,935	6,565	0
Financing from affiliated companies	-45,571	-120,488	118,106
Other, net	'	'	70
Cash provided from (used in) financing activities	-205,344	-309,184	2,262
Effect of foreign exchange on cash and cash equivalents	0	0	0
(Decrease) increase in cash and cash equivalents	-3,963	4,984	0
Cash and cash equivalents at beginning of year	5,001	17	17
Cash and cash equivalents at end of year	1,038	5,001	17
Guarantor Subsidiaries [Member]	'	'	'
Cash provided from (used in) operating activities	-8,448	140,082	-1,763
Cash flows from investing activities:	'	'	'
Capital expenditures	-29,583	-22,308	-24,147
Proceeds from sale of discontinued business	0	'	'
Deposits for interest rate swap	0	0	0
Return of deposits for interest rate swap	0	0	0
Return of investment in subsidiary	0	'	'
Other, net	0	6,303	0
Cash provided from (used in) investing activities	-29,583	-16,005	-24,147
Cash flows from financing activities:	'	'	'
Net (repayments) borrowings under revolving credit facility	0	0	0
Issuance of 4.10% senior notes	'	0	'
Repayment of 7.125% senior notes	'	0	'
Repayment of Foundry Park I mortgage loan	'	0	0
Net (repayments) borrowings under lines of credit	0	0	0
Dividends paid	-86,585	-344,584	0
Debt issuance costs	0	0	0
Repurchases of common stock	0	'	0
Issuance of intercompany note payable, net	-14,328	0	-23,298
Repayment of intercompany note payable, net	18,961	0	24,000
Financing from affiliated companies	218,232	221,004	25,212
Other, net	'	'	958
Cash provided from (used in) financing activities	136,280	-123,580	26,872
Effect of foreign exchange on cash and cash equivalents	0	0	0
(Decrease) increase in cash and cash equivalents	98,249	497	962
Cash and cash equivalents at beginning of year	3,956	3,459	2,497
Cash and cash equivalents at end of year	102,205	3,956	3,459
Non-Guarantor Subsidiaries [Member]	'	'	'
Cash provided from (used in) operating activities	83,832	64,015	60,612
Cash flows from investing activities:	'	'	'
Capital expenditures	-28,893	-16,445	-29,368
Proceeds from sale of discontinued business	140,011	'	'
Deposits for interest rate swap	0	0	0
Return of deposits for interest rate swap	0	0	0
Return of investment in subsidiary	0	'	'
Other, net	0	0	0
Cash provided from (used in) investing activities	111,118	-16,445	-29,368
Cash flows from financing activities:	'	'	'
Net (repayments) borrowings under revolving credit facility	0	0	0
Issuance of 4.10% senior notes	'	0	'
Repayment of 7.125% senior notes	'	0	'
Repayment of Foundry Park I mortgage loan	'	-63,544	-2,731
Net (repayments) borrowings under lines of credit	-1,135	-3,641	6,529
Dividends paid	-77,978	-7,722	-32,748
Debt issuance costs	0	0	0
Repurchases of common stock	0	'	0
Issuance of intercompany note payable, net	14,328	65,500	23,298
Repayment of intercompany note payable, net	-77,896	-6,565	-24,000
Financing from affiliated companies	0	0	0
Other, net	'	'	0
Cash provided from (used in) financing activities	-142,681	-15,972	-29,652
Effect of foreign exchange on cash and cash equivalents	3,019	1,680	-1,376
(Decrease) increase in cash and cash equivalents	55,288	33,278	216
Cash and cash equivalents at beginning of year	80,172	46,894	46,678
Cash and cash equivalents at end of year	135,460	80,172	46,894
Total Consolidating Adjustments [Member]	'	'	'
Cash provided from (used in) operating activities	53,272	-251,790	110,570
Cash flows from investing activities:	'	'	'
Capital expenditures	0	0	0
Proceeds from sale of discontinued business	0	'	'
Deposits for interest rate swap	0	0	0
Return of deposits for interest rate swap	0	0	0
Return of investment in subsidiary	-45,174	'	'
Other, net	0	0	0
Cash provided from (used in) investing activities	-45,174	0	0
Cash flows from financing activities:	'	'	'
Net (repayments) borrowings under revolving credit facility	0	0	0
Issuance of 4.10% senior notes	'	0	'
Repayment of 7.125% senior notes	'	0	'
Repayment of Foundry Park I mortgage loan	'	0	0
Net (repayments) borrowings under lines of credit	0	0	0
Dividends paid	164,563	352,306	32,748
Debt issuance costs	0	0	0
Repurchases of common stock	0	'	0
Issuance of intercompany note payable, net	0	0	0
Repayment of intercompany note payable, net	0	0	0
Financing from affiliated companies	-172,661	-100,516	-143,318
Other, net	'	'	0
Cash provided from (used in) financing activities	-8,098	251,790	-110,570
Effect of foreign exchange on cash and cash equivalents	0	0	0
(Decrease) increase in cash and cash equivalents	0	0	0
Cash and cash equivalents at beginning of year	0	0	0
Cash and cash equivalents at end of year	$0	$0	$0