10-K

2014

UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

FORM 10-K

x    ANNUAL REPORT PURSUANT TO SECTION 13 OR 15(d) OF

THE SECURITIES EXCHANGE ACT OF 1934

For the fiscal year ended December 31, 2014

OR

¨    TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF

THE SECURITIES EXCHANGE ACT OF 1934

For the transition period from              to             

Commission file number 1-4119

NUCOR CORPORATION

(Exact name of registrant as specified in its charter)

Delaware	13-1860817
(State or other jurisdiction of incorporation or organization)	(I.R.S. Employer Identification No.)
1915 Rexford Road, Charlotte, North Carolina	28211
(Address of principal executive offices)	(Zip Code)

Registrant’s telephone number, including area code: (704) 366-7000

Securities registered pursuant to Section 12(b) of the Act:

Title of each class	Name of each exchange      on which registered
Common stock, par value $0.40 per share	New York Stock Exchange

Securities registered pursuant to Section 12(g) of the Act:

None

Indicate by check mark if the registrant is a well-known seasoned issuer, as defined in Rule 405 of the Securities Act.    Yes  x    No  ¨

Indicate by check mark if the registrant is not required to file reports pursuant to Section 13 or Section 15(d) of the Act.    Yes  ¨    No  x

Indicate by check mark whether the registrant (1) has filed all reports required to be filed by Section 13 or 15(d) of the Securities Exchange Act of 1934 during the preceding 12 months (or for such shorter period that the registrant was required to file such reports), and (2) has been subject to such filing requirements for the past 90 days.    Yes  x    No  ¨

Indicate by check mark whether the registrant has submitted electronically and posted on its corporate Web site, if any, every Interactive Data File required to be submitted and posted pursuant to Rule 405 of Regulation S-T during the preceding 12 months (or for such shorter period that the registrant was required to submit and post such files).    Yes  x    No  ¨

Indicate by check mark if disclosure of delinquent filers pursuant to Item 405 of Regulation S-K is not contained herein, and will not be contained, to the best of registrant’s knowledge, in definitive proxy or information statements incorporated by reference in Part III of this Form 10-K or any amendment to this Form 10-K.  ¨

Indicate by check mark whether the registrant is a large accelerated filer, an accelerated filer, a non-accelerated filer, or a smaller reporting company. See the definitions of “large accelerated filer,” “accelerated filer” and “smaller reporting company” in Rule 12b-2 of the Exchange Act. (Check one):

Large accelerated filer  x Accelerated filer  ¨ Non-accelerated filer  ¨ Smaller reporting company  ¨

Indicate by check mark whether the registrant is a shell company (as defined in Rule 12b-2 of the Act).    Yes  ¨    No  x

Aggregate market value of common stock held by non-affiliates was approximately $16.04 billion based upon the closing sales price of the registrant’s common stock on the last business day of the registrant’s most recently completed second fiscal quarter, July 5, 2014.

319,046,902 shares of the registrant’s common stock were outstanding at February 20, 2015.

Documents incorporated by reference include: Portions of the registrant’s 2014 Annual Report (Parts I, II and IV), and portions of the registrant’s Proxy Statement for its 2015 Annual Meeting of Stockholders (Part III) to be filed within 120 days after the registrant’s fiscal year end.

Nucor Corporation

Table of Contents

PART I
	Item 1.	Business	1
	Item 1A.	Risk Factors	8
	Item 1B.	Unresolved Staff Comments	13
	Item 2.	Properties	14
	Item 3.	Legal Proceedings	15
	Item 4.	Mine Safety Disclosures	15
	Executive Officers of the Registrant		15
PART II
	Item 5.	Market for Registrant’s Common Equity, Related Stockholder Matters and Issuer Purchases of Equity Securities	17
	Item 6.	Selected Financial Data	17
	Item 7.	Management’s Discussion and Analysis of Financial Condition and Results of Operations	17
	Item 7A.	Quantitative and Qualitative Disclosures About Market Risk	17
	Item 8.	Financial Statements and Supplementary Data	18
	Item 9.	Changes in and Disagreements With Accountants on Accounting and Financial Disclosure	19
	Item 9A.	Controls and Procedures	19
	Item 9B.	Other Information	19
PART III
	Item 10.	Directors, Executive Officers and Corporate Governance	20
	Item 11.	Executive Compensation	20
	Item 12.	Security Ownership of Certain Beneficial Owners and Management and Related Stockholder Matters	20
	Item 13.	Certain Relationships and Related Transactions, and Director Independence	20
	Item 14.	Principal Accountant Fees and Services	20
PART IV
	Item 15.	Exhibits and Financial Statement Schedules	21
SIGNATURES			25
Index to Financial Statement Schedule			27

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PART I

Item 1. Business

Overview

Nucor Corporation and its affiliates (“Nucor,” the “Company” or “we”) manufacture steel and steel products. The Company also produces direct reduced iron (“DRI”) for use in the Company’s steel mills. Through The David J. Joseph Company and its affiliates (“DJJ”), the Company also processes ferrous and nonferrous metals and brokers ferrous and nonferrous metals, pig iron, hot briquetted iron (“HBI”) and DRI. Most of the Company’s operating facilities and customers are located in North America, but Nucor is doing business outside of North America as well. The Company’s operations include several international trading companies that buy and sell steel and steel products manufactured by the Company and others.

Nucor is North America’s largest recycler, using scrap steel as the primary raw material in producing steel and steel products. In 2014, we recycled approximately 19.0 million tons of scrap steel.

General Development of our Business in Recent Years

Nucor has invested significant capital in recent years to improve our cost structure and expand our product portfolios to include more value-added, higher margined offerings. Our investments total nearly $6 billion during the last six years, with approximately two-thirds going to capital expenditures and one-third going to acquisitions. The Company believes that this focus on lowering cost will enable us to execute on our strategy of delivering profitable growth and expanding our product mix and market diversity will make us less susceptible to imports.

A major emphasis of our cost improvement plan is on reducing our raw materials cost. We have a goal of controlling between six and seven million tons of annual capacity in high-quality scrap substitutes so that we can better control both the cost and reliable sourcing of these raw materials. Our 2,500,000 metric tons-per-year DRI facility in St. James Parish, Louisiana began production in December 2013. Between the DRI plant in Trinidad with an annual capacity of 2,000,000 metric tons and our new facility in Louisiana, we will be approximately two-thirds of the way towards that goal when the Louisiana facility is fully operational. Our DRI plant in St. James Parish, Louisiana produced excellent quality DRI through the first ten months of 2014. However, the plant experienced operational challenges in 2014 as it went through several outages to make changes intended to improve consistency in the production process and yield performance. In November, the plant’s process gas heater experienced a failure, leading to the immediate suspension of production operations. Due to the lead times on the specialty steel pipes that must be replaced, we estimate that the Louisiana DRI plant will be operational again late in the first quarter of 2015.

The DRI production process requires significant volumes of natural gas. To ensure the DRI plant in Louisiana has a sustained advantage from lower natural gas costs, Nucor entered into two long-term, onshore natural gas working interest drilling programs in U.S.-based proven reserves with Encana Oil & Gas (USA) Inc. (“Encana”) that allow us to better manage our exposure to natural gas pricing volatility and our overall energy demand for our operations. The natural gas produced by these two programs is sold to third parties to offset our exposure to the volatility of the price of natural gas consumed by the Louisiana DRI facility and our other operations. In December 2013, Nucor made a joint decision with Encana to temporarily suspend drilling new natural gas wells. The joint decision was made due to the then-current expectation that the natural gas pricing environment would be weak in 2014. In the fourth quarter of 2014, Nucor and Encana agreed to further suspend drilling through calendar year 2015, except for a de minimis number of wells that are necessary in order to retain leasehold rights. We believe this joint decision demonstrates the flexibility of our partnership with Encana to react to market conditions to the mutual benefit of both parties while still allowing us to better manage our exposure to natural gas pricing volatility at our operating divisions that consume natural gas.

Of the approximately $4 billion that has been spent since 2009 on capital expenditures, the main focus of that spending has been on projects that further our raw materials and value-added product diversification

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strategies. Within the steel mills segment, Nucor has deployed significant amounts of capital to expand our product offerings, enhance productivity and improve costs at our existing operations. At our Hertford County, North Carolina plate mill, the heat treat line became operational in 2011, which has allowed Nucor to grow its presence in higher-margin products where greater strength and abrasion resistance is required. The heat treat line allows us to improve the product mix allocation between our two plate mills and five sheet mills to improve margins at those facilities. Also at the Hertford County mill, we commissioned a vacuum tank degasser in 2012, and we began operating a normalizing line in 2013. Collectively, these investments have positioned the Hertford County mill to increase the diversity of our product offerings that are less exposed to imports. Nucor’s $290 million project at our Tennessee, Nebraska and South Carolina bar mills to expand our special bar quality (“SBQ”) and wire rod production capabilities by approximately one million tons is nearing completion. Production has begun on the new wire rod mill located in South Carolina, and our Nebraska mill successfully started up the fifth strand at its melt shop caster and its upgraded rolling mill. Our Tennessee mill added a second ladle metallurgy furnace, a fourth strand at its melt shop caster and a new quality assurance line. The SBQ projects, which we expect to be completed in 2015, will allow us to produce engineered bar for more demanding applications that are less exposed to imports while maintaining our position as a low-cost commodity bar producer by shifting production to our other bar mills. In 2014, our Berkeley County, South Carolina mill successfully started up its nearly $100 million capital project that allows us to produce wider and thinner high-strength steel grades that can be used in lightweight automotive applications.

Nucor’s steel mills segment has also grown significantly in recent years through the acquisitions of Gallatin Steel Company (“Gallatin”) and Skyline Steel LLC (“Skyline”). Nucor acquired Gallatin in 2014 for a cash purchase price of $779 million. Located on the Ohio River in Ghent, Kentucky, Gallatin has an annual sheet steel production capacity of approximately 1,800,000 tons. This acquisition is strategically important as it expands Nucor’s footprint in the Midwestern United States market, and it broadens Nucor’s product offerings in the pipe and tube market. The acquisition of Skyline in 2012 for $675 million was an important strategic investment as it paired Skyline’s leadership position in the steel piling distribution market with our Nucor-Yamato Steel Company (“Nucor-Yamato”) joint venture’s position as the market leader in steel piling manufacturing. To build upon the synergies in the piling market serviced by Skyline, Nucor-Yamato has invested $115 million in a project to broaden its range of hot-rolled piling products. Completed in the second half of 2014, this project added several new sheet piling sections, which expanded our product offerings to include wider piling sections that are lighter and stronger, covering more area at a lower installed cost.

Segments

Nucor reports its results in three segments: steel mills, steel products and raw materials. Net sales to external customers, intercompany sales, depreciation expense, amortization expense, earnings before income taxes and noncontrolling interests, assets and capital expenditures by segment for each of the three fiscal years in the three-year period ended December 31, 2014 are set forth in Note 23 of the Notes to Consolidated Financial Statements included in Nucor’s 2014 Annual Report, which is incorporated by reference. The steel mills are Nucor’s largest segment, representing approximately 70% of the Company’s sales to external customers in the fiscal year ended December 31, 2014.

Principal Products Produced

In the steel mills segment, Nucor produces and distributes sheet steel (hot-rolled, cold-rolled and galvanized), plate steel, structural steel (wide-flange beams, beam blanks, H-piling and sheet piling) and bar steel (blooms, billets, concrete reinforcing bar, merchant bar, wire rod and SBQ). Nucor manufactures steel principally from scrap steel and scrap steel substitutes using electric arc furnaces, continuous casting and automated rolling mills. Nucor’s equity method investments in Duferdofin Nucor S.r.l. and NuMit LLC are included in the steel mills segment. Also included in the steel mills segment are our distribution and international trading companies that buy and sell steel and steel products that Nucor and other steel producers have manufactured. In the steel products segment, Nucor produces steel joists and joist girders, steel deck, fabricated concrete reinforcing steel,

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cold finished steel, steel fasteners, metal building systems, steel grating and expanded metal, and wire and wire mesh. In the raw materials segment, the Company produces DRI; brokers ferrous and nonferrous metals, pig iron, HBI and DRI; supplies ferro-alloys; and processes ferrous and nonferrous scrap metal. The raw materials segment also includes our natural gas working interest drilling programs with Encana and Nucor’s equity method investment in Hunter Ridge Energy Services LLC.

Markets and Marketing

The steel mills segment sells its products primarily to steel service centers, fabricators and manufacturers located throughout the United States, Canada, Mexico and elsewhere in the world. Nucor produces hot-rolled, cold-rolled and galvanized sheet steel in standard grades and to customers’ specifications while maintaining inventories to fulfill anticipated orders. We estimate that approximately 50% of our sheet steel sales in 2014 were to contract customers. The balance of our sheet steel sales was made in the spot market at prevailing prices at the time of sale. The proportion of tons sold to contract customers at any given time depends on a variety of factors, including our consideration of current and future market conditions, our strategy to appropriately balance spot and contract tons to maximize profitability, our desire to sustain a diversified customer base, and our end-use customers’ perceptions about future market conditions. These sheet sales contracts permit price adjustments to reflect changes in the current market-based indices and/or raw material costs near the time of shipment. These sheet sales contracts typically have terms ranging from six to twelve months. Steel contract sales outside of our sheet operations are not significant.

Our plate, structural, reinforcing and merchant bar steel come in standard sizes and grades, which allows us to maintain inventory levels of these products to meet our customers’ expected orders. In addition, our bar mill group manufactures hot-rolled SBQ products to exacting specifications primarily servicing the automotive, energy, agricultural, heavy equipment and transportation sectors. Almost all of our plate, structural, rebar, merchant bar and SBQ steel sales occur in the spot market at prevailing market prices.

In 2014, approximately 85% of the shipments made by our steel mills segment were to external customers. The balance of the steel mills segment’s shipments went to our piling distributor and our downstream joist, deck, rebar fabrication, fastener, metal buildings and cold finish operations.

In the steel products segment, we sell steel joists and joist girders, and steel deck to general contractors and fabricators located throughout the United States and Canada. We make these products to the customers’ specifications and do not maintain inventories of these finished steel products. The majority of these contracts are firm, fixed-price contracts that are in most cases competitively bid against other suppliers. Longer-term supply contracts may or may not permit us to adjust our prices to reflect changes in prevailing raw materials costs. We sell and install fabricated reinforcing products only on a construction contract bid basis. These products are used by contractors in constructing highways, bridges, reservoirs, utilities, hospitals, schools, airports, stadiums and high-rise buildings. We manufacture cold finished steel, steel fasteners, steel grating, wire and wire mesh in standard sizes and maintain inventories of these products to fulfill anticipated orders. We sell cold finished steel and steel fasteners primarily to distributors and manufacturers located throughout the United States and Canada.

We market products from the steel mills and steel products segments mainly through in-house sales forces. We also utilize our internal distribution and trading companies to market our products abroad. The markets for these products are largely tied to capital and durable goods spending and are affected by changes in general economic conditions.

In the raw materials segment, we process ferrous and nonferrous scrap metal for use in our steel mills and for sale to various domestic and international external customers. We also broker ferrous and nonferrous metals and scrap substitutes, supply ferro-alloys, and provide transportation, material handling and other services to users of scrap metals. Our primary external customers for ferrous scrap are electric arc furnace steel mills and foundries that use ferrous scrap as a raw material in their manufacturing process. External customers purchasing nonferrous scrap metal include aluminum can producers, secondary aluminum smelters, steel mills and other

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processors and consumers of various nonferrous metals. We market scrap metal products and related services to our external customers through in-house sales forces. In 2014, approximately 14% of the ferrous and nonferrous metals and scrap substitutes tons we processed were sold to external customers. We used the balance in our steel mills.

Also within the raw materials segment are our DRI plants in Trinidad and Louisiana that produce iron inputs exclusively for use in the Nucor mills, as well as our natural gas working interest drilling programs. All natural gas produced by the working interest drilling programs is and will be sold to outside parties, and as a result the revenues from these sales are a small but increasing amount of our revenues.

Backlog

In the steel mills segment, Nucor’s backlog of orders was approximately $1.56 billion and $1.77 billion at December 31, 2014 and 2013, respectively. Order backlog for the steel mills segment includes only orders from external customers and excludes orders from our downstream businesses. Nucor’s backlog of orders in the steel products segment was approximately $1.49 billion and $1.27 billion at December 31, 2014 and 2013, respectively. The majority of these orders will be filled within one year. Order backlog within our raw materials segment is not significant because the majority of the raw materials that segment produces are used internally.

Sources and Availability of Raw Materials

The primary raw materials for our steel mills segment are ferrous scrap and scrap substitutes such as pig iron, DRI and HBI. On average, it takes approximately 1.1 tons of scrap and scrap substitutes to produce a ton of steel. As of December 31, 2014, DJJ operated over 70 scrap recycling facilities, and our annual scrap processing capability exceeded five million tons. DJJ acquires ferrous scrap from numerous sources including manufacturers of products made from steel, industrial plants, scrap dealers, peddlers, auto wreckers and demolition firms. We purchase pig iron as needed from a variety of sources and operate DRI plants in Trinidad and Louisiana with respective capacities of 2,000,000 and 2,500,000 metric tons annually. The primary raw material for our DRI facilities is iron ore, which we purchase from various international suppliers. Our newly constructed Louisiana DRI facility is the first phase of a multi-phase site development plan opportunity in Louisiana.

In 2010, Nucor entered into an agreement with Encana that involves drilling and completing onshore natural gas wells in U.S.-based proven reserves over an approximate seven-year period that began in June 2010. Nucor entered into a second and more extensive drilling agreement with Encana in late 2012 that is projected to span more than 20 years. Natural gas produced by these working interest drilling programs is being sold to offset our exposure to the volatility of the price of natural gas consumed by our Louisiana DRI facility and our other operations. In December 2013, Nucor and Encana announced an agreement to temporarily suspend drilling new natural gas wells due to the then-current expectations that the natural gas pricing environment would be weak in 2014. In the fourth quarter of 2014, Nucor and Encana agreed to extend our drilling suspension through the end of 2015. The 2015 capital expenditures for drilling will consist of drilling a de minimis number of wells required to maintain leasehold rights. Under the agreement with Encana, Nucor maintains the right to resume drilling at any point should natural gas prices change. In addition to our natural gas needs at the Louisiana DRI facility, Nucor is also a substantial consumer of natural gas at our steel mill operations. The drilling of natural gas wells under the two agreements is expected to be sufficient in the future to cover Nucor’s demand at all of its steel mills in the United States plus the demand of two DRI plants or, alternatively, at three DRI plants, if additional capacity were to be added.

The primary raw material for our steel products segment is steel produced by Nucor’s steel mills.

DJJ generally purchases ferrous and nonferrous scrap for sale to external customers from the same variety of sources it purchases ferrous scrap for use as a raw material in Nucor’s steel mills. DJJ does not purchase a significant amount of scrap metal from a single source or from a limited number of major sources. The

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availability and price of ferrous scrap are affected by changes in the global supply and demand for steel and steel products. Ferrous scrap and scrap substitutes are our single largest cost of products sold. A key part of our business strategy is to control a significant portion of the supply of high quality metallics needed to operate our steel mills.

Energy Consumption and Costs

Our steel mills are large consumers of electricity and natural gas. Our DRI facilities in Trinidad and Louisiana are also large consumers of natural gas. Consequently, we use a variety of strategies to manage our exposure to price risk of natural gas, including cash flow hedges and our natural gas working interest drilling programs.

Historically, manufacturers in the United States have benefited from relatively stable and competitive energy costs that have allowed them to compete on an equal footing in the increasingly global marketplace. The availability and prices of electricity and natural gas are influenced today, however, by many factors including changes in supply and demand, advances in drilling technology and, increasingly, changes in public policy relating to energy production and use. Because energy is such a significant cost of products sold for Nucor, we strive continually to make our operations in all three of our business segments more energy efficient. We also closely monitor developments in public policy relating to energy production and consumption. When appropriate, we work to shape those developments in ways that we believe will allow us to continue to be a competitive producer of steel and steel products in an increasingly competitive global marketplace.

Competition

We compete in a variety of steel and metal markets, including markets for finished steel products, unfinished steel products and raw materials. These markets are highly competitive with many domestic and foreign firms participating, and, as a result of this highly competitive environment, we find that we primarily compete on price and service.

Our electric arc furnace steel mills face many different forms of competition, including integrated steel producers (who use iron ore converted into liquid form in a blast furnace as their basic raw material instead of scrap steel), other electric arc furnace mills, foreign imports and alternative materials. Large integrated steel producers have the ability to manufacture a wide variety of products but face significantly higher energy costs and are often burdened with higher capital and fixed operating costs. Electric arc furnace mill producers such as Nucor are sensitive to increases in scrap prices but tend to have lower capital and fixed operating costs compared with integrated steel producers.

Overproduction in global steelmaking capacity continues to be a significant challenge for Nucor and the entire U.S. steel industry. With the U.S. economy performing better than most other economies around the world, the U.S. steel market is the destination of choice for global steel producers. In 2014, total steel imports increased 38% compared with 2013, and imports of finished and semi-finished steel products accounted for 34% of U.S. market share last year. Imports increased from nearly every steel-producing country and in virtually every category of steel products. These imports, which are sometimes artificially-priced, make it very difficult for Nucor to maintain sales prices and profit levels.

Competition from foreign steel and steel product producers presents unique challenges for us. Imported steel and steel products often benefit from government subsidies, either directly or indirectly through government-owned enterprises or government-owned or controlled financial institutions. China, which accounts for almost half of the steel produced annually in the world, is the prime example of how foreign governments impact the global steel market. Nucor believes that Chinese producers, many of which are government-owned in whole or in part, benefit from their government’s manipulation of foreign currency exchange rates and from the receipt of government subsidies, which allow them to sell their products below cost. Other foreign governments utilize similar tactics to artificially lower their steel production costs. These distorting trade practices are widely

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recognized as being unfair and have been challenged successfully as violating world trade rules. The U.S. government recently completed several successful trade enforcement actions, including terminating its suspension agreement with Russia for hot-rolled steel imports; assessing duties on oil country tubular goods from South Korea and five other countries; and ruling that the domestic rebar industry has been materially injured as a result of dumped and subsidized rebar imports from Turkey and Mexico.

Aggressive trade practices, left unchallenged, seriously undermine the ability of Nucor and other domestic producers to compete on price. Competition from countries with subsidized production costs has significantly contributed to the exodus of manufacturing jobs from the United States. When such an exodus occurs, the U.S. economy is weakened and Nucor’s customer base is diminished. Rigorous trade law enforcement is critical to our ability to maintain our competitive position against foreign producers that engage in unlawful trade practices. Nucor has been active in calling on policymakers to enforce global trade agreements.

We also experience competition from other materials. Depending on our customers’ end use of our products, there are sometimes other materials, such as concrete, aluminum, plastics, composites and wood that compete with our steel products. When the price of steel relative to other raw materials rises, these alternatives become more attractive to our customers.

Competition in our scrap and raw materials business is also vigorous. The scrap metals market consists of many firms and is highly fragmented. Firms typically compete on price and geographic proximity to the sources of scrap metal.

Environmental Laws and Regulations

Our business operations are subject to numerous federal, state and local laws and regulations intended to protect the environment. The principal federal environmental laws include the Clean Air Act (“CAA”) that regulates air emissions; the Clean Water Act (“CWA”) that regulates water discharges; the Resource Conservation and Recovery Act (“RCRA”) that addresses solid and hazardous waste treatment, storage and disposal; and the Comprehensive Environmental Response, Compensation and Liability Act (“CERCLA”) that governs releases of, and remediation of, sites contaminated by hazardous substances. Our operations are also subject to state laws and regulations that are patterned on these and other federal laws.

We believe that we are in substantial compliance with the provisions of all federal and state environmental laws and regulations applicable to our business operations. However, both federal and state laws and regulations are becoming increasingly stringent, making compliance with them increasingly expensive and burdensome. In many instances the total costs of compliance are not readily quantifiable because compliance is so engrained in our operating philosophy that these costs are simply considered part of our standard operating procedures.

The United States Environmental Protection Agency (“USEPA”) has proposed or promulgated many new national ambient air quality standards and toxic air emissions rules for which it has recently or not yet issued guidance or compliance deadlines. While we begin immediately to plan for compliance with such standards and rules, we cannot fully assess their impact on our operations until the guidance has been fully developed or issued and compliance deadlines have been established. In other cases where environmental regulations are proposed or promulgated that may regulate previously unregulated aspects of our operations, it is impossible for us to fully determine the impact of these regulations until protracted legal challenges have been concluded and USEPA or other regulatory agencies have developed and issued technical guidance. Despite this atmosphere of regulatory uncertainty, at this time we do not believe that compliance with these new environmental regulations will have a material adverse effect on our results of operations, cash flows or financial condition.

The CAA imposes stringent limits on air emissions with a federally mandated operating permit program administered by the states with civil and criminal enforcement sanctions. Each of our steel mills is required to operate in compliance with its permit or potentially incur sanctions for failing to do so. Because of the size of our steelmaking operations, they are subject to new “Greenhouse Gasses” (“GHGs”) regulations and are required to

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do GHG Best Available Control Technology (“BACT”) evaluations when their permits are modified. There is still uncertainty and very little guidance from USEPA as to what is or may be considered GHG BACT for steelmaking operations. Our operations are currently properly permitted, and we will not need to make these determinations unless and until these permits are modified. Based on current guidance, we do not expect these requirements to have a material adverse effect on our results of operations, cash flows or financial condition.

Nucor uses electric arc furnaces (“EAF”) to recycle scrap metal into new steel products. These EAFs use electricity as their primary source of energy. As the new GHG regulations, air toxics rules and new emissions standards recently imposed on electric utilities are fully implemented it is reasonable to expect that the cost of electricity produced by these utilities will increase. See Item 1A “Risk Factors” for more information about the potential impact of GHG regulations on Nucor’s business.

The CWA regulates water discharges and withdrawals. Nucor maintains discharge and withdrawal permits as appropriate at its facilities under the national pollutant discharge elimination system program of the CWA and conducts its operations in compliance with those permits. Nucor also maintains permits from local governments for the discharge of water into publicly owned treatment works where available.

RCRA establishes standards for the management of solid and hazardous wastes. RCRA also addresses the environmental impact of contamination from waste disposal activities and from recycling of and storage of most wastes. While Nucor believes it is in substantial compliance with these regulations, past waste disposal activities that were legal when conducted but now may pose a contamination threat are periodically discovered. These and off-site properties that USEPA has determined are contaminated, for which Nucor may be potentially responsible at some level, are quickly evaluated and corrected. While Nucor has conducted and is in the final stages of completing some cleanups under RCRA, these liabilities either are identified already and being resolved or have been fully resolved.

Because Nucor long ago implemented environmental practices that have resulted in the responsible disposal of waste materials, Nucor is also not presently considered a major contributor to any major cleanups under CERCLA for which Nucor has been named a potentially responsible party. Nucor continually evaluates these types of potential liabilities and, if appropriate, maintains reserves sufficient to remediate the identified liabilities. Under RCRA, private citizens may also bring an action against the operator of a regulated facility for potential damages and payment of cleanup costs. Nucor is confident that its system of internal evaluation and due diligence has sufficiently identified these types of potential liabilities so that compliance with these regulations will not have a material adverse effect on our results of operations, cash flows or financial condition beyond that already reflected in the reserves established for them.

The primary raw material of Nucor’s steelmaking operations is scrap metal. The process of recycling scrap metal brings with it many contaminants such as paint, zinc, chrome and other metals that produce air emissions which are captured in specialized emission control equipment. This filtrant (EAF dust) is classified as a listed hazardous waste under the RCRA. Because these contaminants contain valuable metals, this filtrant is recycled to recover those metals. Nucor sends all but a small fraction of the EAF dust it produces to recycling facilities that recover the zinc, lead, chrome and other valuable metals from this dust. By recycling this material, Nucor is not only acting in a sustainable, responsible manner but is also substantially limiting its potential for future liability under both CERCLA and RCRA.

Nucor operates an aggressive and sustainable environmental program that incorporates the concept of individual employee as well as management responsibility for environmental performance. All of Nucor’s steelmaking operations are ISO 14001 certified. Achieving ISO 14001 certification means that each of Nucor’s steel mills has put an environmental management system in place with measurable targets and objectives, such as reducing the use of oil and grease and minimizing electricity use, and has implemented site-wide recycling programs. These environmental management systems make environmental commitment each Nucor teammate’s responsibility. Nucor’s environmental program maintains a high level of training, commitment, outreach and visibility.

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Capital expenditures at our facilities that are associated with environmental regulation compliance for 2015 and 2016 are estimated to be less than $100 million per year.

Employees

Nucor has a simple, streamlined organizational structure to allow our employees to make quick decisions and to innovate. Our organization is highly decentralized, with most day-to-day operating decisions made by our division general managers and their staff. We have slightly more than 100 employees in our executive office. The vast majority of Nucor’s 23,600 employees are not represented by labor unions.

Available Information

Nucor’s annual report on Form 10-K, quarterly reports on Form 10-Q, current reports on Form 8-K, and any amendments to these reports, are available on our website at www.nucor.com, as soon as reasonably practicable after Nucor files these reports electronically with, or furnishes them to, the Securities and Exchange Commission (“SEC”). Except as otherwise stated in these reports, the information contained on our website or available by hyperlink from our website is not incorporated into this Annual Report on Form 10-K or other documents we file with, or furnish to, the SEC.

Item 1A. Risk Factors

Many of the factors that affect our business and operations involve risk and uncertainty. The factors described below are some of the risks that could materially negatively affect our business, financial condition and results of operations.

Our industry is cyclical and both recessions and prolonged periods of slow economic growth could have an adverse effect on our business.

Demand for most of our products is cyclical in nature and sensitive to general economic conditions. Our business supports cyclical industries such as the commercial construction, energy, metals service centers, appliance and automotive industries. As a result, downturns in the United States economy or any of these industries could materially adversely affect our results of operations, financial condition and cash flows. Five years removed from the worst recession the United States has experienced in decades, we have begun to see some improvement in general economic and manufacturing activity. However, the slow pace of recovery, coupled with ongoing uncertainties in Europe and other regions of the world, continue to weigh on global and domestic growth. These situations continue to contribute to weaker end-markets and depressed demand, resulting in extraordinary volatility in our financial results.

Although we experienced increased profitability in 2014 from the previous year, the economic outlook remains uncertain both in the United States and globally. While we believe that the long-term prospects for the steel industry remain bright, we are unable to predict the duration of the current economic conditions that are contributing to reduced demand for our products compared to pre-recession levels. Future economic downturns or a prolonged slow-growth or stagnant economy could materially adversely affect our business, results of operations, financial condition and cash flows.

Overcapacity in the global steel industry could increase the level of steel imports, which may negatively affect our business, results of operations and cash flows.

Global steelmaking capacity exceeds global consumption of steel products. During periods of global economic weakness this overcapacity is amplified because of weaker global demand. This excess capacity often results in manufacturers in certain countries exporting significant amounts of steel and steel products at prices that are at or below their costs of production. In some countries the steel industry is subsidized or owned in whole or in part by the government, giving imported steel from those countries certain cost advantages. These imports, which are also affected by demand in the domestic market, international currency conversion rates and

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domestic and international government actions, can result in downward pressure on steel prices, which could materially adversely affect our business, results of operations, financial condition and cash flows. Overcapacity has also led to greater protectionism as is evident in raw material and finished product border tariffs put in place by China, Brazil and other countries.

In particular, steel production in China, the world’s largest producer and consumer of steel, continues to exceed Chinese demand. This rising overcapacity in China has resulted in a further increase in imports of artificially low-priced steel and steel products to the United States and world steel markets. Steel and steel products which would otherwise have been consumed by the local steel customers could then be displaced into global markets, putting our steel and steel products at a competitive disadvantage. A continuation of this unbalanced growth trend or a significant decrease in China’s rate of economic expansion could result in increasing steel exports from China.

Producers in the world steel market could pursue additional export opportunities as a result of the current abundance of ocean freight capacity and lower fuel costs. However, the domestic steel market could experience a contraction in exports at the same time as imports grow due to weakening conditions in Europe and policies of foreign governments that result in overvaluing the U.S. dollar against other foreign currencies. Furthermore, the planned addition of new capacity in the United States could exacerbate the issue of overcapacity domestically as well as globally.

Competition from other producers, imports or alternative materials may adversely affect our business.

We face strong competition from other steel producers and imports that compete with our products on price and service. The steel markets are highly competitive and a number of firms, domestic and foreign, participate in the steel and raw materials markets. Depending on a variety of factors, including raw materials cost and availability, energy, technology, labor and capital costs, government control of currency exchange rates and government subsidies of foreign steel producers, our business may be materially adversely affected by competitive forces.

In many applications, steel competes with other materials, such as concrete, aluminum, composites, plastic and wood. Increased use of these materials in substitution for steel products could have a material adverse effect on prices and demand for our steel products.

Since 2011, automobile producers have begun taking steps towards complying with new Corporate Average Fuel Economy mileage requirements for new cars and light trucks that they produce. As automobile producers work to produce vehicles in compliance with these new standards, they may reduce the amount of steel or begin utilizing alternative materials in cars and trucks to improve fuel economy, thereby reducing demand for steel and resulting in further over-supply of steel in North America. Certain automakers have begun to use greater amounts of aluminum and smaller proportions of steel in some 2015 and 2016 models.

The results of our operations are sensitive to volatility in steel prices and the cost of raw materials, particularly scrap steel.

We rely to an extent on outside vendors to supply us with raw materials, including both scrap and scrap substitutes that are critical to the manufacture of our products. Although we have further vertically integrated our business by constructing our DRI facilities in Trinidad and Louisiana and also acquiring DJJ, we still must purchase most of our primary raw material, steel scrap, from numerous other sources located throughout the United States. Although we believe that the supply of scrap and scrap substitutes is adequate to operate our facilities, prices of these critical raw materials are volatile and are influenced by changes in scrap exports in response to changes in the scrap demands of our global competitors. At any given time, we may be unable to obtain an adequate supply of these critical raw materials with price and other terms acceptable to us. The availability and prices of raw materials may also be negatively affected by new laws and regulations, allocation by suppliers, interruptions in production, accidents or natural disasters, changes in exchange rates, worldwide price fluctuations, and the availability and cost of transportation. Many countries that export steel into our

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markets restrict the export of scrap, protecting the supply chain of some foreign competitors. This trade practice creates an artificial competitive advantage for foreign producers that could limit our ability to compete in the U.S. market.

If our suppliers increase the prices of our critical raw materials, we may not have alternative sources of supply. In addition, to the extent that we have quoted prices to our customers and accepted customer orders for our products prior to purchasing necessary raw materials, we may be unable to raise the price of our products to cover all or part of the increased cost of the raw materials. Also, if we are unable to obtain adequate and timely deliveries of our required raw materials, we may be unable to timely manufacture sufficient quantities of our products. This could cause us to lose sales, incur additional costs and suffer harm to our reputation.

Changes in the availability and cost of electricity and natural gas are subject to volatile market conditions that could adversely affect our business.

Our steel mills are large consumers of electricity and natural gas. In addition, our DRI facilities are also large consumers of natural gas. We rely upon third parties for our supply of energy resources consumed in the manufacture of our products. The prices for and availability of electricity, natural gas, oil and other energy resources are subject to volatile market conditions. These market conditions often are affected by weather, political and economic factors beyond our control, and we may be unable to raise the price of our products to cover increased energy costs. Disruptions in the supply of our energy resources could temporarily impair our ability to manufacture our products for our customers. Increases in our energy costs resulting from regulations that are not equally applicable across the entire global steel market could materially adversely affect our business, results of operations, financial condition and cash flows.

A substantial or extended decline in natural gas prices could have a material adverse effect on our natural gas working interest drilling programs.

The financial performance and condition of our natural gas working interest drilling programs are substantially dependent on the prevailing prices of natural gas and liquids. Fluctuations in natural gas or liquids prices could have an adverse effect on the Company’s natural gas operations and financial condition and the value and recovery of its reserves in the working interest drilling programs. Prices for natural gas and liquids fluctuate in response to changes in the supply and demand for natural gas and oil, market uncertainty and a variety of additional factors beyond the Company’s control. A substantial or extended decline in the price of natural gas could result in further delay or cancellation of existing or future drilling programs or curtailment in production at some properties, all of which could have an adverse effect on the Company’s revenues, profitability and cash flows.

Our steelmaking processes, DRI processes, and the manufacturing processes of many of our suppliers, customers and competitors are energy intensive and generate carbon dioxide and other GHGs. The regulation of these GHGs through new regulations or legislation in an onerous form could have a material adverse impact on our results of operations, financial condition and cash flows.

Carbon is an essential raw material in Nucor’s production processes. As a carbon steel producer, Nucor will be increasingly affected both directly and indirectly if GHG regulations are further implemented. Because our operations are subject to most of these new GHG regulations, we have already begun to feel the impact in the permit modification and reporting processes. Both GHG regulations and recently promulgated National Ambient Air Quality Standards (“NAAQS”), which are more restrictive than previous standards, make it significantly more difficult to obtain new permits and to modify existing permits.

These same regulations have indirectly increased the costs to manufacture our products as they have and continue to increase the cost of energy, primarily electricity, which we use extensively in the steelmaking process. The discovery of new natural gas reserves utilizing the practice of horizontal drilling and hydraulic fracturing is dampening some of this indirect impact, as some utilities switch fuels to natural gas from coal

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thereby reducing their emissions significantly. However, because some generating facilities when faced with new regulations are idling facilities instead of converting to natural gas, the resulting reduction in capacity can and will create further pressure on electrical energy prices. To the extent that these regulations cause either directly or indirectly an increase in the cost of energy, they will have an impact on Nucor’s ability to compete.

The USEPA continues to press forward with new regulations that control GHG and other NAAQS pollutants. Court challenges regarding many of these regulations have diminished to some extent their impact on various operations. Nucor operations have not, however, experienced any relief from these legal actions. Further court challenges to some of the NAAQS revisions may affect our operations, but the impact is likely to be minimal. Because some foreign steel producers are not subject to these same indirect and direct regulatory burdens and their associated cost increases, our products could be at a further competitive disadvantage. In addition to increased costs of production, we could also incur costs to defend and resolve legal claims and other litigation related to new air and water quality regulations and the alleged impact of our operations on the environment.

Environmental compliance and remediation could result in substantially increased costs and materially adversely impact our competitive position.

Our operations are subject to numerous federal, state and local laws and regulations relating to protection of the environment, and we accordingly, make provision in our financial statements for the estimated costs of compliance. These laws are becoming increasingly stringent, resulting in inherent uncertainties in these estimates. To the extent that competitors, particularly foreign steel producers and manufacturers of competitive products, are not subject to similar regulation and required to incur equivalent costs, our competitive position could be materially adversely impacted. If one of our permits is revoked or if we were to experience significant delays in obtaining a permit modification or a new permit, this could result in operational delays at one or more of our facilities, causing a negative impact on our results of operations and cash flows.

Federal and state legislation and regulatory initiatives relating to hydraulic fracturing could result in increased costs and additional operating restrictions or delays.

Various legislative efforts, at all levels, are in process that are intended to further regulate the hydraulic fracturing process used by the oil and gas industry. Hydraulic fracturing is an important and commonly used process in the completion of natural gas wells in shale and tight sand formations, including all of those in our natural gas working interest drilling programs. This process involves the injection of water, chemicals and, at times, sand under pressure into rock formations to stimulate the release of natural gas, oil and natural gas liquids. Sponsors of these proposals and regulations have asserted that chemicals used in the fracturing process could adversely affect drinking water supplies and/or that hydraulic fracturing could pose a variety of other risks. The practitioners of fracking are adamant that these claims are false and to date the USEPA has not attempted to further regulate the practice. Any onerous governmental regulations could lead to operational delays, increased operating costs that could make it more difficult to perform hydraulic fracturing and possibly even the cessation of drilling.

We acquire businesses from time to time and we may encounter difficulties in integrating businesses we acquire.

We plan to continue to seek attractive opportunities to acquire businesses, enter into joint ventures and make other investments that strengthen Nucor. Realizing the anticipated benefits of acquisitions or other transactions will depend on our ability to operate these businesses and integrate them with our operations and to cooperate with our strategic partners. Our business, results of operations, financial condition and cash flows could be materially adversely affected if we are unable to successfully integrate these businesses.

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Our operations are subject to business interruptions and casualty losses.

The steelmaking business is subject to numerous inherent risks, particularly unplanned events such as explosions, fires, other accidents, natural disasters such as floods or earthquakes, unplanned critical equipment failures, acts of terrorism, inclement weather and transportation interruptions. While our insurance coverage could offset losses relating to some of those types of events, our results of operations and cash flows could be adversely impacted to the extent any such losses are not covered by our insurance.

We are subject to information technology and cyber security threats which could have an adverse effect on our business.

We utilize various information technology systems to efficiently address business functions ranging from the operation of our production equipment to administrative computation to the storage of data such as intellectual property and proprietary business information. Despite efforts to assure secure and uninterrupted operations, threats from increasingly sophisticated cyber-attacks or system failures could result in materially adverse operational disruptions or security breaches. While decentralization tends to compartmentalize exposure, these risks could result in disclosure or destruction of key proprietary information and reputational damage that could adversely affect our results of operations.

Our business requires substantial capital investment and maintenance expenditures, and our capital resources may not be adequate to provide for all of our cash requirements.

Our operations are capital intensive. For the five-year period ended December 31, 2014, our total capital expenditures, excluding acquisitions, were approximately $3.61 billion. Our business also requires substantial expenditures for routine maintenance. Although we expect requirements for our business needs, including the funding of capital expenditures, debt service for financings and any contingencies, will be financed by internally generated funds or from borrowings under our $1.5 billion unsecured revolving credit facility, we cannot assure you that this will be the case. Additional acquisitions or unforeseen events could require financing from additional sources.

Risks associated with operating in international markets could adversely affect our business, financial position and results of operations.

Certain of our businesses are located outside of the United States, in Europe and in emerging markets. There are a number of risks inherent in doing business in such markets. These include but are not limited to: unfavorable political or economic factors; local labor and social issues; changes in regulatory requirements; fluctuations in foreign currency exchange rates; and complex foreign laws, treaties including tax laws and the United States Foreign Corrupt Practices Act of 1977. These risks could restrict our ability to operate our international businesses profitably and therefore have a negative impact on our financial position and results of operations. In addition, our reported results of operations and financial position could also be negatively affected by exchange rates when the activities and balances of our foreign operations are translated into U.S. dollars for financial reporting purposes.

The accounting treatment of equity method investments, goodwill and other long-lived assets could result in future asset impairments, which would reduce our earnings.

We periodically test our equity method investments, goodwill and other long-lived assets to determine whether their estimated fair value is less than their value recorded on our balance sheet. The results of this testing for potential impairment may be adversely affected by the continuing uncertain market conditions for the steel industry, as well as changes in interest rates and general economic conditions. If we determine that the fair value of any of these assets is less than the value recorded on our balance sheet, and in the case of equity method investments the decline is other than temporary, we would likely incur a non-cash impairment loss that would negatively impact our results of operations.

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Tax increases and changes in tax rules could adversely affect our financial results.

The steel industry and our business are sensitive to changes in taxes. As a company based in the U.S., Nucor is more exposed to the effects of changes in U.S. tax laws than some of our major competitors. Our provision for income taxes and cash tax liability in the future could be adversely affected by changes in U.S. tax laws. Potential changes that would adversely affect us include, but are not limited to, current proposals for corporate tax reform which would lower tax rates and eliminate most tax deductions [repealing LIFO (last-in, first-out treatment of inventory), accelerated depreciation, and the domestic production activity deduction] and decrease the ability of U.S. companies to receive a tax credit for foreign taxes paid or to defer the U.S. deduction of expenses in connection with investments made in other countries.

We are subject to legal proceedings and legal compliance risks.

We spend substantial resources ensuring that we comply with domestic and foreign regulations, contractual obligations and other legal standards. Notwithstanding this, we are subject to a variety of legal proceedings and compliance risks in respect of various issues, including regulatory, safety, environmental, employment, transportation, intellectual property, contractual, import/export, international trade and governmental matters that arise in the course of our business and in our industry. For information regarding our current significant legal proceedings, see Item 3. “Legal Proceedings.” A negative outcome in an unusual or significant legal proceeding or compliance investigation could adversely affect our financial condition and results of operations. While we believe that we have adopted appropriate risk management and compliance programs, the nature of our operations means that legal and compliance risks will continue to exist and additional legal proceedings and other contingencies, the outcome of which cannot be predicted with certainty, will arise from time to time.

Item 1B. Unresolved Staff Comments

None.

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Item 2. Properties

We own all of our principal operating facilities. These facilities, by segment, are as follows:

Location	Approximate square footage of facilities		Principal products
Steel mills:
Blytheville, Arkansas		2,560,000	Steel shapes, flat-rolled steel
Berkeley County, South Carolina		2,180,000	Flat-rolled steel, steel shapes
Decatur, Alabama		2,000,000	Flat-rolled steel
Crawfordsville, Indiana		1,900,000	Flat-rolled steel
Norfolk, Nebraska		1,480,000	Steel shapes
Hickman, Arkansas		1,450,000	Flat-rolled steel
Hertford County, North Carolina		1,220,000	Steel plate
Plymouth, Utah		1,200,000	Steel shapes
Jewett, Texas		1,080,000	Steel shapes
Darlington, South Carolina		980,000	Steel shapes
Seattle, Washington		640,000	Steel shapes
Memphis, Tennessee		570,000	Steel shapes
Ghent, Kentucky		560,000	Flat-rolled steel
Auburn, New York		450,000	Steel shapes
Marion, Ohio		440,000	Steel shapes
Kankakee, Illinois		430,000	Steel shapes
Jackson, Mississippi		420,000	Steel shapes
Kingman, Arizona		380,000	Steel shapes
Tuscaloosa, Alabama		370,000	Steel plate
Birmingham, Alabama		280,000	Steel shapes
Wallingford, Connecticut		260,000	Steel shapes
Steel products:
Norfolk, Nebraska		1,080,000	Joists, deck, cold finished bar
Brigham City, Utah		730,000	Joists, cold finished bar
Grapeland, Texas		680,000	Joists, deck
St. Joe, Indiana		550,000	Joists, deck
Chemung, New York		550,000	Joists, deck
Florence, South Carolina		540,000	Joists, deck
St. Joe, Indiana		530,000	Fasteners
Fort Payne, Alabama		470,000	Joists, deck

The steel mills segment also includes Skyline, our steel foundation distributor with U.S. manufacturing facilities in eight states and one facility in Canada, the majority of which are owned. Additionally, we have a distribution center in Pompano Beach, Florida and in Mexico.

In the steel products segment, we have 79 additional operating facilities in 36 states and 28 operating facilities in Canada. Our affiliate, Harris Steel Inc., also operates multiple sales offices in Canada and certain other foreign locations.

In the raw materials segment, DJJ has 78 operating facilities in 16 states along with multiple brokerage offices in the U.S. and certain other foreign locations. Nucor’s raw materials segment also includes our DRI facilities. Nucor has DRI facilities in Point Lisas, Trinidad and St. James Parish, Louisiana. A significant portion of the DRI production process occurs outdoors. The Trinidad site, including leased land, is approximately 1.84 million square feet. The Louisiana site, which began operations in December 2013, has approximately 174.2 million square feet of owned land with buildings that total approximately 72,000 square feet.

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During 2014, the average utilization rates of all operating facilities in the steel mills, steel products and raw materials segments were approximately 78%, 64% and 63% of production capacity, respectively.

We also own our principal executive office in Charlotte, North Carolina.

Item 3. Legal Proceedings

Nucor has been named, along with other major steel producers, as a co-defendant in several related antitrust class-action complaints filed by Standard Iron Works and other steel purchasers in the United States District Court for the Northern District of Illinois. The majority of these complaints were filed in September and October of 2008, with two additional complaints being filed in July and December of 2010. Two of these complaints have been voluntarily dismissed and are no longer pending. The plaintiffs allege that from April 1, 2005 through December 31, 2007, eight steel manufacturers, including Nucor, engaged in anticompetitive activities with respect to the production and sale of steel. The plaintiffs seek monetary and other relief. Five of the eight defendants have reached court approved settlements with the plaintiffs. Although we believe the plaintiffs’ claims are without merit and will vigorously defend against them, we cannot at this time predict the outcome of this litigation or estimate the range of Nucor’s potential exposure. Nucor has not recorded any reserves or contingencies related to this legal matter.

On April 19, 2012, MM Steel LP filed an action against Nucor and its co-defendants in the U.S. District Court for the Southern District of Texas and has asserted violations of federal antitrust law. On March 25, 2014, the jury returned a verdict of $52.0 million in damages against all defendants jointly and severally, which amount was subject to trebling under the federal antitrust laws. On June 1, 2014, the court awarded a judgment jointly and severally against the defendants totaling $160.8 million after trebling and including costs and attorneys’ fees. Although the Company has filed an appeal with the U.S. Court of Appeals for the Fifth Circuit and believes that it has valid grounds to have the judgment vacated or reversed, the ultimate resolution of the case is uncertain. Nucor has not recorded any reserves or contingencies related to this legal matter.

Nucor is from time to time a party to various lawsuits, claims, and other legal proceedings that arise in the ordinary course of business. With respect to all such lawsuits, claims and proceedings, we record reserves when it is probable a liability has been incurred and the amount of loss can be reasonably estimated. We do not believe that any of these proceedings, individually or in the aggregate, would be expected to have a material adverse effect on our results of operations, financial position or cash flows. Nucor maintains liability insurance for certain risks that is subject to certain self-insurance limits.

Item 4. Mine Safety Disclosures

Not applicable.

Executive Officers of the Registrant

James R. Darsey (59), Executive Vice President of Merchant and Rebar Products, was named EVP in September 2010. Prior to that, he served as President of the Vulcraft/Verco Group from 2007 and was elected Vice President of Nucor in 1996. He began his Nucor career in 1979 as Design Engineer at Vulcraft-Texas, later serving as Engineering Manager at Vulcraft-Utah and Vulcraft-Texas. He then served as General Manager of Vulcraft-Texas and General Manager of Nucor Steel-Texas.

John J. Ferriola (62) has served as Chairman of the Board of Directors of Nucor since January 2014, as Chief Executive Officer since January 2013 and as President since January 2011. Previously, Mr. Ferriola served as President and Chief Operating Officer from January 2011 to December 2012 and, prior to that, as Chief Operating Officer of Steelmaking Operations from 2007 to 2010, Executive Vice President from 2002 to 2007 and Vice President from 1996 to 2001. He has also been a director of Nucor since January 2011. Mr. Ferriola joined Nucor in 1991 as the Manager of Maintenance and Engineering at Nucor Steel-Texas. He later served as General Manager of Vulcraft-Texas, Nucor Steel-Nebraska and Nucor Steel-Indiana.

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James D. Frias (58) has been Chief Financial Officer, Treasurer and Executive Vice President since January 2010. Prior to that, Mr. Frias was Vice President of Finance from 2006 to 2009. Mr. Frias joined Nucor in 1991 as Controller of Nucor Building Systems-Indiana. He also served as Controller of Nucor Steel-Indiana and as Corporate Controller. Mr. Frias joined the board of directors of Carlisle Companies Incorporated in February 2015.

Ladd R. Hall (58), Executive Vice President of Flat-Rolled Products, was named EVP in September 2007, having previously served as Vice President of Nucor since 1994. He began his Nucor career in Inside Sales at Nucor Steel-Utah in 1981. He later served as Sales Manager of Vulcraft-Utah, and General Manager of Vulcraft-Texas, Vulcraft-Utah, Nucor Steel-South Carolina and Nucor Steel-Berkeley County.

Raymond S. Napolitan, Jr. (57) was named Executive Vice President of Fabricated Construction Products in June 2013, having previously served as President of Nucor’s Vulcraft/Verco group from 2010 to 2013 and President of American Buildings Company from 2007 to 2010. He was elected Vice President of Nucor in 2007. He began his Nucor career in 1996 as Engineering Manager of Nucor Building Systems-Indiana, and later served as General Manager of Nucor Building Systems-Texas.

R. Joseph Stratman (58), Executive Vice President of Raw Materials, was named EVP in September 2007, having previously served as Vice President of Nucor since 1999. He joined Nucor in 1989 as Controller of Nucor Building Systems-Indiana. He then served as Controller of Nucor-Yamato Steel Company, General Manager of Nucor Steel-Nebraska and General Manager of Nucor-Yamato Steel Company.

David A. Sumoski (48) was named Executive Vice President of Engineered Bar Products in September 2014. He had previously served as General Manager of Nucor Steel Marion, Inc. from 2008 to 2012 and as General Manager of Nucor Steel Memphis, Inc. from 2012 to September 2014. He was named Vice President of Nucor in 2010. He began his career with Nucor as an electrical supervisor at Nucor Steel-Berkeley in 1995, later serving as Maintenance Manager.

D. Chad Utermark (46) was named Executive Vice President of Beam and Plate Products in May 2014. He had previously served as General Manager of Nucor Steel-Texas from 2008 to 2011 and as General Manager of Nucor-Yamato Steel Company from 2011 to May 2014. He was named Vice President of Nucor in 2009. He began his Nucor career as a utility operator at Nucor Steel-Arkansas in 1992, subsequently serving as shift supervisor and Hot Mill Manager at that division as well as Roll Mill Manager at Nucor Steel-Texas.

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PART II

Item 5. Market for Registrant’s Common Equity, Related Stockholder Matters and Issuer Purchases of Equity Securities

Nucor has increased its base cash dividend every year since the Company began paying dividends in 1973. Nucor paid a total dividend of $1.48 per share in 2014 compared with $1.47 per share in 2013. In December 2014, the board of directors increased the base quarterly cash dividend on Nucor’s common stock to $0.3725 per share from $0.37 per share. In February 2015, the board of directors declared Nucor’s 168^th consecutive quarterly cash dividend of $0.3725 per share payable on May 11, 2015 to stockholders of record on March 31, 2015.

Additional information regarding the market for Nucor’s common stock, quarterly market price ranges, the number of stockholders and dividend payments is incorporated by reference to Nucor’s 2014 Annual Report, page 78. Additional information regarding securities authorized for issuance under stock-based compensation plans is incorporated by reference to Nucor’s 2014 Annual Report, pages 63 through 66.

Item 6. Selected Financial Data

Historical financial information is incorporated by reference to Nucor’s 2014 Annual Report, page 43.

Item 7. Management’s Discussion and Analysis of Financial Condition and Results of Operations

Information required by this item is incorporated by reference to Nucor’s 2014 Annual Report, page 3 (Forward-looking Statements) and pages 22 through 39.

Item 7A. Quantitative and Qualitative Disclosures About Market Risk

In the ordinary course of business, Nucor is exposed to a variety of market risks. We continually monitor these risks and develop strategies to manage them.

Interest Rate Risk—Nucor manages interest rate risk by using a combination of variable-rate and fixed-rate debt. At December 31, 2014, 23% of Nucor’s long-term debt was in industrial revenue bonds that have variable interest rates that are adjusted weekly. The remaining 77% of Nucor’s long-term debt was at fixed rates. Future changes in interest rates are not expected to significantly impact earnings. Nucor also occasionally makes use of interest rate swaps to manage net exposure to interest rate changes. As of December 31, 2014, there were no such contracts outstanding. Nucor’s investment practice is to invest in securities that are highly liquid with short maturities. As a result, we do not expect changes in interest rates to have a significant impact on the value of our investment securities recorded as short-term investments.

Commodity Price Risk—In the ordinary course of business, Nucor is exposed to market risk for price fluctuations of raw materials and energy, principally scrap steel, other ferrous and nonferrous metals, alloys and natural gas. We attempt to negotiate the best prices for our raw materials and energy requirements and to obtain prices for our steel products that match market price movements in response to supply and demand. In periods of strong or stable demand for our products, we are more likely to be able to effectively reduce the normal time lag in passing through higher raw material costs so that we can maintain our gross margins. When demand for our products is weaker, this becomes more challenging.

Natural gas produced by Nucor’s working interest drilling programs is being sold to third parties to offset our exposure to changes in the price of natural gas consumed by our Louisiana DRI facility. In addition to the future natural gas needs at the Louisiana DRI facility that began operations in the fourth quarter of 2013, Nucor is also a substantial consumer of natural gas at our steel mill operations. Natural gas produced through the working interest drilling programs is expected to be sufficient in the future to cover Nucor’s demand at all of its steel mills in the United States plus the demand of two DRI plants or, alternatively, at three DRI plants. However,

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the natural gas production from the working interest drilling programs currently does not completely cover the natural gas usage at our operating facilities due to the temporary cessation of drilling discussed below. For the year ended December 31, 2014, the volume of natural gas sold from our natural gas working interest drilling programs was approximately 66% of the volume of natural gas purchased for consumption in our domestic steelmaking and DRI facilities.

Our natural gas working interest drilling programs are affected by changes in natural gas prices in an inverse manner to natural gas costs at our DRI and steel mill operations. As natural gas prices increase, our increased energy costs at our DRI and steel mill operations is somewhat mitigated by increased profit from sales of natural gas to third party customers from our natural gas drilling programs. Likewise, as natural gas prices decrease, we experience decreased energy costs at our DRI and steel mill operations, but we also experience decreased profit from our natural gas drilling programs.

The impact of low natural gas prices associated with our drilling programs is limited by the existence of a drilling suspension clause. Nucor is contractually obligated to drill a minimum number of wells per year under the terms of our original agreements with Encana; however, we have the right to suspend drilling of new wells if market pricing falls below a pre-established threshold. In the fourth quarter of 2013, we announced a joint decision with Encana to temporarily suspend drilling new natural gas wells until there is a sustained improvement in natural gas pricing. In the fourth quarter of 2014 Nucor and Encana agreed to further suspend drilling through calendar year 2015, except for a de minimis number of wells that are necessary in order to retain leasehold rights. We believe that this pause demonstrates the flexibility of our partnership with Encana to react to market conditions to the mutual benefit of both parties while still allowing us to better manage our exposure to natural gas pricing volatility at our operating divisions that consume natural gas.

Nucor also periodically uses derivative financial instruments to hedge a portion of our exposure to price risk related to natural gas purchases used in the production process and to hedge a portion of our scrap, aluminum and copper purchases and sales. Gains and losses from derivatives designated as hedges are deferred in accumulated other comprehensive income (loss) on the consolidated balance sheets and recognized into earnings in the same period as the underlying physical transaction. At December 31, 2014, accumulated other comprehensive income (loss) included $8.0 million in unrealized net-of-tax losses for the fair value of these derivative instruments. Changes in the fair values of derivatives not designated as hedges are recognized in earnings each period. The following table presents the negative effect on pre-tax earnings of a hypothetical change in the fair value of derivative instruments outstanding at December 31, 2014, due to an assumed 10% and 25% change in the market price of each of the indicated commodities (in thousands):

Commodity Derivative	10% Change		25% Change
Natural gas	$	5,600	$	13,900
Aluminum		2,061		5,153
Copper		76		190

Any resulting changes in fair value would be recorded as adjustments to other comprehensive income (loss), net of tax, or recognized in net earnings, as appropriate. These hypothetical losses would be partially offset by the benefit of lower prices paid or higher prices received for the physical commodities.

Foreign Currency Risk—Nucor is exposed to foreign currency risk primarily through its operations in Canada, Europe and Trinidad. We periodically use derivative contracts to mitigate the risk of currency fluctuations. Open foreign currency derivative contracts at December 31, 2014 and 2013 were insignificant.

Item 8. Financial Statements and Supplementary Data

Information required by this item is incorporated by reference to Nucor’s 2014 Annual Report, pages 44 through 74.

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Item 9. Changes in and Disagreements With Accountants on Accounting and Financial Disclosure

None.

Item 9A. Controls and Procedures

Evaluation of Disclosure Controls and Procedures—As of the end of the period covered by this report, the Company carried out an evaluation, under the supervision and with the participation of the Company’s management, including the Company’s Chief Executive Officer and Chief Financial Officer, of the effectiveness of the design and operation of the Company’s disclosure controls and procedures. Based upon that evaluation, the Chief Executive Officer and Chief Financial Officer concluded that the Company’s disclosure controls and procedures were effective as of the evaluation date.

Changes in Internal Control Over Financial Reporting—There were no changes in our internal control over financial reporting during the quarter ended December 31, 2014 that have materially affected, or are reasonably likely to materially affect, our internal control over financial reporting.

Report on Internal Control Over Financial Reporting—Management’s report on internal control over financial reporting required by Section 404 of the Sarbanes-Oxley Act of 2002 and the attestation report of PricewaterhouseCoopers LLP, an independent registered public accounting firm, on the effectiveness of Nucor’s internal control over financial reporting as of December 31, 2014 are incorporated by reference to Nucor’s 2014 Annual Report, pages 44 through 45.

Item 9B. Other Information

None.

19

PART III

Item 10. Directors, Executive Officers and Corporate Governance

The information required by this item about Nucor’s executive officers is contained in the section captioned Executive Officers of the Registrant in Part I of this Form 10-K. The other information required by this item is incorporated by reference to Nucor’s Proxy Statement for the 2015 Annual Meeting of Stockholders (the “Proxy Statement”) under the headings Election of Directors; Information Concerning Experience, Qualifications, Attributes and Skills of the Nominees; Section 16(a) Beneficial Ownership Reporting Compliance and Corporate Governance and Board of Directors.

Nucor has adopted a Code of Ethics for Senior Financial Professionals (“Code of Ethics”) that applies to the Company’s Chief Executive Officer, Chief Financial Officer, Corporate Controller and other senior financial professionals, as well as Corporate Governance Principles for our Board of Directors and charters for our board committees. These documents are publicly available on our website, www.nucor.com. If we make any substantive amendments to the Code of Ethics or grant any waiver, including any implicit waiver, from a provision of the Code of Ethics, we will disclose the nature of such amendment or waiver on our website.

Item 11. Executive Compensation

The information required by this item is incorporated by reference to the Proxy Statement under the headings Executive Officer Compensation, Director Compensation and Report of the Compensation and Executive Development Committee.

Item 12. Security Ownership of Certain Beneficial Owners and Management and Related Stockholder Matters

The information required by this item is incorporated by reference to the Proxy Statement under the headings Security Ownership of Management and Certain Beneficial Owners and Equity Compensation Plan Information.

Item 13. Certain Relationships and Related Transactions, and Director Independence

The information required by this item is incorporated by reference to the Proxy Statement under the heading Corporate Governance and Board of Directors.

Item 14. Principal Accountant Fees and Services

The information required by this item is incorporated by reference to the Proxy Statement under the heading Fees Paid to Independent Registered Public Accounting Firm.

20

PART IV

Item 15. Exhibits and Financial Statement Schedules

Financial Statements:

The following consolidated financial statements and notes thereto, management’s report on internal control over financial reporting and the report of independent registered public accounting firm are incorporated by reference to Nucor’s 2014 Annual Report, pages 44 through 74:

• Management’s Report on Internal Control Over Financial Reporting

• Report of Independent Registered Public Accounting Firm

• Consolidated Balance Sheets—December 31, 2014 and 2013

• Consolidated Statements of Earnings—Years ended December 31, 2014, 2013 and 2012

• Consolidated Statements of Comprehensive Income—Years ended December 31, 2014, 2013, and 2012

• Consolidated Statements of Stockholders’ Equity—Years ended December 31, 2014, 2013 and 2012

• Consolidated Statements of Cash Flows—Years ended December 31, 2014, 2013 and 2012

• Notes to Consolidated Financial Statements

Financial Statement Schedules:

The following financial statement schedule is included in this report as indicated:

	Page
Report of Independent Registered Public Accounting Firm on Financial Statement Schedule		28
Schedule II—Valuation and Qualifying Accounts—Years ended December 31, 2014, 2013 and 2012		29

All other schedules are omitted because they are not required, not applicable, or the information is furnished in the consolidated financial statements or notes.

Exhibits:

3	Restated Certificate of Incorporation (incorporated by reference to Form 8-K filed September 14, 2010)
3(i)	Bylaws as amended and restated September 11, 2012 (incorporated by reference to Form 8-K filed September 13, 2012)
4	Indenture, dated as of January 12, 1999, between Nucor Corporation and The Bank of New York Mellon (formerly known as The Bank of New York), as trustee (incorporated by reference to Form S-4 filed December 13, 2002)
4(i)	Indenture, dated as of August 19, 2014, between Nucor Corporation and U.S. Bank National Association, as trustee (incorporated by reference to Form S-3 filed August 20, 2014)
4(ii)	Second Supplemental Indenture, dated October 1, 2002, between Nucor Corporation and The Bank of New York Mellon (formerly known as The Bank of New York), as trustee (incorporated by reference to Form S-4 filed December 13, 2002)
4(iii)	Third Supplemental Indenture, dated December 3, 2007, between Nucor Corporation and The Bank of New York Mellon (formerly known as The Bank of New York), as trustee (incorporated by reference to Form 8-K filed December 4, 2007)

21

4(iv)	Fourth Supplemental Indenture, dated June 2, 2008, between Nucor Corporation and The Bank of New York Mellon (formerly known as The Bank of New York), as trustee (incorporated by reference to Form 8-K filed June 3, 2008)
4(v)	Fifth Supplemental Indenture, dated September 21, 2010, between Nucor Corporation and The Bank of New York Mellon (formerly known as The Bank of New York), as trustee (incorporated by reference to Form 8-K filed September 21, 2010)
4(vi)	Sixth Supplemental Indenture, dated July 29, 2013, between Nucor Corporation and The Bank of New York Mellon, as trustee (incorporated by reference to Form 8-K filed July 29, 2013)
4(vii)	Seventh Supplemental Indenture, dated December 10, 2014, between Nucor Corporation and The Bank of New York Mellon, as prior trustee, and U.S. Bank National Association, as successor trustee (incorporated by reference to Form 8-K filed December 11, 2014)
4(viii)	Form of 5.75% Notes due December 2017 (included in Exhibit 4(iii) above) (incorporated by reference to Form 8-K filed December 4, 2007)
4(ix)	Form of 6.40% Notes due December 2037 (included in Exhibit 4(iii) above) (incorporated by reference to Form 8-K filed December 4, 2007)
4(x)	Form of 5.85% Notes due June 2018 (included in Exhibit 4(iv) above) (incorporated by reference to Form 8-K filed June 3, 2008)
4(xi)	Form of 4.125% Notes due September 2022 (included in Exhibit 4(v) above) (incorporated by reference to Form 8-K filed September 21, 2010)
4(xii)	Form of 4.000% Notes due August 2023 (included in Exhibit 4(vi) above) (incorporated by reference to Form 8-K filed September July 29, 2013)
4(xiii)	Form of 5.200% Notes due August 2043 (included in Exhibit 4(vi) above) (incorporated by reference to Form 8-K filed July 29, 2013)
10	2005 Stock Option and Award Plan (incorporated by reference to Form 8-K filed May 17, 2005) (#)
10(i)	2005 Stock Option and Award Plan, Amendment No. 1 (incorporated by reference to Form 10-Q for quarter ended September 29, 2007) (#)
10(ii)	2010 Stock Option and Award Plan (incorporated by reference to Form 10-Q for quarter ended July 3, 2010) (#)
10(iii)	Nucor Corporation 2014 Omnibus Incentive Compensation Plan (incorporated by reference to Appendix A of the Proxy Statement on Schedule 14A filed March 25, 2014) (#)
10(iv)	Form of Restricted Stock Unit Award Agreement—time-vested awards (incorporated by reference to Form 10-K for year ended December 31, 2005) (#)
10(v)	Form of Restricted Stock Unit Award Agreement—retirement-vested awards (incorporated by reference to Form 10-K for year ended December 31, 2005) (#)
10(vi)	Form of Restricted Stock Unit Award Agreement for Non-Employee Directors (incorporated by reference to Form 10-Q for quarter ended April 1, 2006) (#)
10(vii)	Form of Award Agreement for Annual Stock Option Grants used for awards granted prior to May 8, 2014 (incorporated by reference to Form 10-Q for quarter ended June 30, 2012) (#)
10(viii)	Form of Award Agreement for Annual Stock Option Grants used for awards granted after May 7, 2014 (incorporated by reference to Form 10-Q for quarter ended July 5, 2014) (#)

22

10(ix)	Employment Agreement of James D. Frias (incorporated by reference to Form 10-K for year ended December 31, 2009) (#)
10(x)	Employment Agreement of John J. Ferriola (incorporated by reference to Form 10-K for year ended December 31, 2001) (#)
10(xi)	Amendment to Employment Agreement of John J. Ferriola (incorporated by reference to Form 10-K for year ended December 31, 2007) (#)
10(xii)	Employment Agreement of Ladd R. Hall (incorporated by reference to Form 10-Q for quarter ended September 29, 2007) (#)
10(xiii)	Employment Agreement of R. Joseph Stratman (incorporated by reference to Form 10-Q for quarter ended September 29, 2007) (#)
10(xiv)	Employment Agreement of Keith B. Grass (incorporated by reference to Form 10-K for the year ended December 31, 2011) (#)
10(xv)	Retirement, Separation, Waiver and Release Agreement of Keith B. Grass (incorporated by reference to Form 10-Q for quarter ended October 4, 2014) (#)
10(xvi)	Employment Agreement of James R. Darsey (incorporated by reference to Form 10-K for year ended December 31, 2010) (#)
10(xvii)	Employment Agreement of Raymond S. Napolitan, Jr. (incorporated by reference to Form 10-Q for quarter ended June 29, 2013) (#)
10(xviii)	Employment Agreement of Chad Utermark (incorporated by reference to Form 10-Q for quarter ended July 5, 2014) (#)
10(xix)	Employment Agreement of David A. Sumoski (incorporated by reference to Form 10-Q for quarter ended October 4, 2014) (#)
10(xx)	Severance Plan for Senior Officers and General Managers as Amended and Restated Effective February 18, 2009 (incorporated by reference to Form 10-Q for quarter ended April 4, 2009) (#)
10(xxi)	Senior Officers Annual Incentive Plan, As Amended and Restated Effective January 1, 2013 (incorporated by reference to Appendix A of the Proxy Statement on Schedule 14A filed March 27, 2013) (#)
10(xxii)	Senior Officers Long-Term Incentive Plan, As Amended and Restated Effective January 1, 2013 (incorporated by reference to Appendix B of the Proxy Statement on Schedule 14A filed March 27, 2013) (#)
10(xxiii)	Underwriting Agreement, dated July 24, 2013, among Nucor Corporation, Citigroup Global Markets Inc., J.P. Morgan Securities LLC and Merrill Lynch, Pierce, Fenner & Smith Incorporated (incorporated by reference to Form 8-K filed July 29, 2013)
10(xxiv)	BJU Carry and Earning Agreement dated October 31, 2012, among Nucor Corporation, Nucor Energy Holdings Inc. and Encana Oil & Gas (USA) Inc. (incorporated by reference to Form 10-K for year ended December 31, 2012) †
10(xxv)*	First Amendment to BJU Carry and Earning Agreement dated October 21, 2014, among Nucor Corporation, Nucor Energy Holdings Inc. and Encana Oil & Gas (USA) Inc. †
12 *	Computation of Ratio of Earnings to Fixed Charges
13*	2014 Annual Report (portions incorporated by reference)
21*	Subsidiaries

23

23*	Consent of Independent Registered Public Accounting Firm
24*	Power of Attorney (included on signature page)
31*	Certification of Principal Executive Officer Pursuant to Rule 13a-14(a)/15d-14(a), as Adopted Pursuant to Section 302 of the Sarbanes-Oxley Act of 2002
31(i)*	Certification of Principal Financial Officer Pursuant to Rule 13a-14(a)/15d-14(a), as Adopted Pursuant to Section 302 of the Sarbanes-Oxley Act of 2002
32**	Certification of Principal Executive Officer Pursuant to 18 U.S.C. Section 1350, as Adopted Pursuant to Section 906 of the Sarbanes-Oxley Act of 2002
32(i)**	Certification of Principal Financial Officer Pursuant to 18 U.S.C. Section 1350, as Adopted Pursuant to Section 906 of the Sarbanes-Oxley Act of 2002
101*	Nucor Corporation Annual Report on Form 10-K for the fiscal year ended December 31, 2014, formatted in XBRL (Extensible Business Reporting Language): (i) the Consolidated Statements of Earnings, (ii) the Consolidated Statements of Comprehensive Income, (iii) the Consolidated Balance Sheets, (iv) the Consolidated Statements of Cash Flows, (v) the Consolidated Statements of Stockholders’ Equity, and (vi) the Notes to Consolidated Financial Statements.

* Filed herewith.

** Furnished (and not filed) herewith pursuant to Item 601(b)(32)(ii) of Regulation S-K.

† Certain portions of this exhibit have been omitted pursuant to a request for confidential treatment filed with Securities and Exchange Commission.

(#) Indicates a management contract or compensatory plan or arrangement.

24

SIGNATURES

Pursuant to the requirements of Section 13 or 15(d) of the Securities Exchange Act of 1934, the Registrant has duly caused this report to be signed on its behalf by the undersigned, thereunto duly authorized.

NUCOR CORPORATION
By:	/S/ JOHN J. FERRIOLA
	John J. Ferriola
	Chairman, Chief Executive Officer and President
Dated: February 27, 2015

POWER OF ATTORNEY

KNOW ALL PERSON BY THESE PRESENTS, that each person whose signature appears below constitutes and appoints James D. Frias and A. Rae Eagle, or either of them, his or her attorney-in-fact, for such person in any and all capacities, to sign any amendments to this report and to file the same, with exhibits thereto, and other documents in connection therewith, with the Securities and Exchange Commission, hereby ratifying and confirming all that either of said attorney-in-fact, or substitute or substitutes, may do or cause to be done by virtue hereof.

Pursuant to the requirements of the Securities Exchange Act of 1934, this report has been signed below by the following persons on behalf of the registrant and in the capacities and on the dates indicated.

/S/ JOHN J. FERRIOLA	/S/ PETER C. BROWNING
John J. Ferriola Chairman, Chief Executive Officer and President (Principal Executive Officer)	Peter C. Browning Director
/S/ JAMES D. FRIAS	/S/ HARVEY B. GANTT
James D. Frias Chief Financial Officer, Treasurer and Executive Vice President (Principal Financial Officer)	Harvey B. Gantt Director
/S/ MICHAEL D. KELLER	/S/ GREGORY J. HAYES
Michael D. Keller Vice President and Corporate Controller (Principal Accounting Officer)	Gregory J. Hayes Director
	/S/ VICTORIA F. HAYNES
	Victoria F. Haynes Director
	/S/ BERNARD L. KASRIEL
	Bernard L. Kasriel Director
	/S/ CHRISTOPHER J. KEARNEY
	Christopher J. Kearney Director

25

/S/ RAYMOND J. MILCHOVICH

Raymond J. Milchovich

Lead Director

/S/ JOHN H. WALKER

John H. Walker

Director

Dated: February 27, 2015

26

NUCOR CORPORATION

Index to Financial Statement Schedule

	Page
Report of Independent Registered Public Accounting Firm on Financial Statement Schedule		28
Schedule II—Valuation and Qualifying Accounts—Years ended December  31, 2014, 2013 and 2012		29

27

Report of Independent Registered Public Accounting Firm on Financial Statement Schedule

To the Board of Directors and Stockholders of

Nucor Corporation:

Our audits of the consolidated financial statements and of the effectiveness of internal control over financial reporting referred to in our report dated February 27, 2015 appearing in the 2014 Annual Report to Stockholders of Nucor Corporation (which report and consolidated financial statements are incorporated by reference in this Annual Report on Form 10-K) also included an audit of the financial statement schedule listed in Item 15 of this Form 10-K. In our opinion, this financial statement schedule presents fairly, in all material respects, the information set forth therein when read in conjunction with the related consolidated financial statements.

/s/ PricewaterhouseCoopers LLP

Charlotte, North Carolina

February 27, 2015

28

NUCOR CORPORATION

Financial Statement Schedule

SCHEDULE II—VALUATION AND QUALIFYING ACCOUNTS (in thousands)

Description	Balance at beginning of year		Additions charged to costs and expenses		Deductions			Balance at end of year
Year ended December 31, 2014 LIFO Reserve	$	624,685	$	—	$	(57,289	)	$	567,396
Year ended December 31, 2013 LIFO Reserve	$	607,240	$	17,445	$	—		$	624,685
Year ended December 31, 2012 LIFO Reserve	$	763,176	$	—	$	(155,936	)	$	607,240

29

NUCOR CORPORATION

List of Exhibits to Form 10-K—December 31, 2014

Exhibit       No.	Description of Exhibit
10(xxv)†	First Amendment to BJU Carry and Earning Agreement dated October 21, 2014, among Nucor Corporation, Nucor Energy Holdings Inc. and Encana Oil & Gas (USA) Inc. †
12	Computation of Ratio of Earnings to Fixed Charges
13	2014 Annual Report (portions incorporated by reference)
21	Subsidiaries
23	Consent of Independent Registered Public Accounting Firm
24	Power of Attorney (included on signature page)
31	Certification of Principal Executive Officer Pursuant to Rule 13a-14(a)/15d-14(a), as Adopted Pursuant to Section 302 of the Sarbanes-Oxley Act of 2002
31(i)	Certification of Principal Financial Officer Pursuant to Rule 13a-14(a)/15d-14(a), as Adopted Pursuant to Section 302 of the Sarbanes-Oxley Act of 2002
32	Certification of Principal Executive Officer Pursuant to 18 U.S.C. Section 1350, as Adopted Pursuant to Section 906 of the Sarbanes-Oxley Act of 2002
32(i)	Certification of Principal Financial Officer Pursuant to 18 U.S.C. Section 1350, as Adopted Pursuant to Section 906 of the Sarbanes-Oxley Act of 2002
101	Nucor Corporation Annual Report on Form 10-K for the fiscal year ended December 31, 2014, formatted in XBRL (Extensible Business Reporting Language): (i) the Consolidated Statements of Earnings, (ii) the Consolidated Statements of Comprehensive Income, (iii) the Consolidated Balance Sheets, (iv) the Consolidated Statements of Cash Flows, (v) the Consolidated Statements of Stockholders’ Equity, and (vi) the Notes to Consolidated Financial Statements.

† Certain portions of this exhibit have been omitted pursuant to a request for confidential treatment filed with Securities and Exchange Commission.

30

EX-10.XXV

Exhibit 10(xxv)

[ENCANA LETTERHEAD]

October 21, 2014

Nucor Energy Holdings Inc.

1915 Rexford Road

Charlotte, North Carolina 28211

Attn: Chief Financial Officer

Attn: Mr. Brad True

RE: First Amendment to the BJU Carry and Earning Agreement (“Agreement”) effective

November 1, 2012 by and among Encana Oil & Gas (USA) Inc. (“Encana”), Nucor

Energy Holdings Inc. and Nucor Corporation (collectively, “Nucor”)

Dear Brad:

Pursuant to our recent discussions, Encana and Nucor (collectively, the “Parties”) have agreed to amend the Agreement to revise the drilling schedule for 2015 and provide for an optional Head’s Up Well drilling program in calendar year 2016.

In light of the foregoing, and in consideration of the mutual covenants and agreements herein, and for other good and valuable consideration, the receipt and sufficiency of which are hereby acknowledged, the Parties agree as follows:

AGREEMENT

1. Defined Terms.    Each capitalized term used in this first amendment (“First Amendment”), to the extent not expressly defined herein, shall have the same meaning ascribed to such term in the Agreement.

2. Amendment to Section 2.2A of the Agreement.    The second sentence in Section 2.2A is hereby deleted and replaced with the following two sentences:

During calendar year 2015, the Parties agree that drilling operations will be limited to [***] total Carry Wells on the [***] of the Big Jimmy Unit, which comprises a portion of the Property. For the calendar year 2016 and thereafter, Encana shall spud a minimum of [***] and a maximum of [***] Carry Wells in each calendar year until such time as the Carry Well Threshold has been met.

3. Addition of Section 2.4G to the Agreement.    The following provisions are hereby incorporated into the Agreement as Section 2.4G and subsections:

2.4G. Optional HUW Program.

(i)     On or before September 1, 2015, Encana will offer to Nucor in writing (“Optional HUW Program Notice”) the opportunity to participate in an optional Head’s Up Well program (“Optional HUW Program”)

[***] This confidential information has been omitted and filed separately with the Securities and Exchange Commission pursuant to a request for confidential treatment.

whereby [***] of the drilling rigs that would otherwise be dedicated to drilling Carry Wells in calendar year 2016 would instead be dedicated to drilling only Head’s Up Wells in calendar year 2016. The location of the Head’s Up Wells to be drilled pursuant to the Optional HUW Program would be determined in a manner consistent with Section 2.1B. Nucor shall have fifteen (15) days from receipt of the Optional HUW Program Notice to make a one-time election in writing (“Nucor Election”) to participate in the Optional HUW Program. If Nucor elects to participate in the Optional HUW Program, Encana shall have fifteen (15) days from receipt of the Nucor Election to advise Nucor in writing whether Encana elects to participate in the Optional HUW Program (“Encana Election”). If Encana elects not to participate in the Optional HUW Program, Nucor shall have fifteen (15) days after receipt of the Encana Election to reaffirm the Nucor Election in writing to Encana. Each Party shall be deemed to have elected not to participate in the Optional HUW Program if it fails to timely provide its Election or affirmation of its Election, as applicable, as required by this Section 2.4G(i). If a Party elects to participate in the Optional HUW Program, it has elected to participate in the entirety of the Program and may not decline to participate in any Head’s Up Well drilled pursuant to the Optional HUW Program. If both Parties decline to participate in the Optional HUW Program, Encana may, in its sole discretion, release or redeploy the designated Head’s Up Well drilling rig to non-Nucor drilling activity. The Parties expressly agree that Encana may simultaneously drill Head’s Up Wells pursuant to the Optional HUW Program and Carry Wells. The Parties further agree that any Head’s Up Wells drilled pursuant to the Optional HUW Program shall (1) count toward satisfaction of the minimum number of wells required to be drilled pursuant to Section 2.2A and (2) be excluded from the number of Carry Wells used to determine the HUW Restriction for calendar year 2017.

(ii)     So long as both Parties elect to participate, each Head’s Up Well drilled pursuant to the Optional HUW Program shall be counted as one well toward the Well Limit. If only Nucor participates, each Head’s Up Well drilled pursuant to the Optional HUW Program shall be counted as two wells toward the Well Limit.

(iii)     If both Parties elect to participate in the Optional HUW Program, each Party shall bear fifty percent (50%) of the costs of the Program. If Encana elects not to participate in an Optional HUW Program and Nucor elects to proceed with such Optional HUW Program, the Parties shall proceed in accordance with Section 4.2.

4. Amendment to Section 2.1(H)(i) of the Agreement. Section 2.1(H)(i) of the Agreement is hereby amended by adding the following sentence immediately after the first sentence of such Section:

Notwithstanding anything to the contrary set forth herein, in the event any changes in Applicable Law or interpretations thereof by any Governmental Authorities have the effect of making the form of wellbore assignment attached hereto as Exhibit C insufficient to grant to Nucor rights to Nucor Wells (whether existing or subsequently completed), oil

[***] This confidential information has been omitted and filed separately with the Securities and Exchange Commission pursuant to a request for confidential treatment.

and gas production therefrom and equipment related thereto, in each case as contemplated in this Agreement or in the New Operating Agreement, the Parties agree to amend any existing Wellbore Assignments as well as the form of wellbore assignment to the extent necessary to preserve and maintain Nucor’s rights in the foregoing as contemplated in this Agreement or in the New Operating Agreement.

5. Amendment to Exhibit C of the Agreement.    The Exhibit C attached to the Agreement is hereby deleted in its entirety and replaced with the Form of Wellbore Assignment and Conveyance attached hereto as Exhibit C.

6. Execution.    This First Amendment may be executed in one or more counterparts, each of which shall be deemed an original and when taken together shall constitute one and the same document. Facsimile and/or electronically transmitted copies of signatures shall be binding.

7. Effect of Amendment.    Except as specifically amended by this First Amendment, the terms and provisions stated in the Agreement, including all exhibits thereto, remain in full force and effect as amended hereby and constitute the entire agreement between the Parties relating to this matter and supersede all prior and contemporaneous agreements and understandings of the Parties. In the event of any inconsistency, the terms and provisions of this First Amendment shall control over and modify the inconsistent terms and provisions of the Agreement.

8. Binding Effect.    This First Amendment shall be binding upon and inure to the benefit of the Parties’ permitted heirs, successors and assigns.

Sincerely,

Encana Oil & Gas (USA) Inc.

by its authorized agent,

Encana Services Company Ltd.

/s/ Jeffrey S. Balmer

Jeffrey S. Balmer

Vice President and General Manager

Western Operations

AGREED AND ACCEPTED, this 21st day of October, 2014		AGREED AND ACCEPTED, this 21st day of October, 2014
Nucor Energy Holdings Inc.		Nucor Corporation
By:	/s/ Bradford G. True	By:	/s/ Bradford G. True
Bradford G. True Vice President		Bradford G. True General Manager

EXHIBIT C

Attached to and made a part of the BJU Carry & Earning Agreement executed October 31, 2012 but effective

November 1, 2012 by and between Encana Oil & Gas (USA) Inc. and Nucor Energy Holdings Inc.

Form of Wellbore Assignment and Conveyance

THE STATE OF COLORADO	§
	§	KNOW ALL MEN BY THESE PRESENTS:
	§

THAT Encana Oil & Gas (USA) Inc., whose address is 370 17^th Street, Suite 1700, Denver, CO 80202 (hereinafter referred to as “Assignor”) for good and valuable consideration, the receipt and sufficiency of which are hereby acknowledged and confessed, does hereby GRANT, BARGAIN, SELL, TRANSFER, ASSIGN, AND CONVEY unto Nucor Energy Holdings Inc., whose address is 1915 Rexford Road, Charlotte, NC 28211 (hereinafter referred to as “Assignee”) an undivided fifty percent (50.00%) of Assignor’s right, title, interest, and estate in and to the following, subject to the limitations below (collectively, the “Assigned Interests”):

a. The wells and their associated wellbores described on Exhibit A or, subject to the terms and conditions of that certain unrecorded New Operating Agreement dated effective November 1, 2012 by and between Assignor and Assignee, (i) any plugging back, reworking or recompletion thereof through or from such wells and their associated wellbores, and (ii) any perforation or stimulation of any of the foregoing (each, individually, a “Well” and collectively, the “Wells”):

b. The rights in and to the oil and gas leases described on the attached Exhibit B (“Leases”), and all pooled, communitized or unitized acreage which includes any part of the Leases insofar and only insofar as said Leases and pooled, communitized or unitized acreage are necessary to operate, maintain, produce and plug and abandon the Wells.

c. All personal property and fixtures associated with the Wells, including without limitation the following: all tubing, casing and other equipment in the wellbore, wellhead equipment and surface production facilities.

d. All oil, gas, gas condensate, casinghead gas and/or all other liquid or gaseous hydrocarbons and other substances produced therewith from the Wells.

Assignor and Assignee further agree as follows:

1. This Assignment is made and accepted subject to, and Assignee hereby assumes, any and all overriding royalties, payments out of production, and other burdens or encumbrances of record as of November 1, 2012 to the extent the same cover and affect the Assigned Interests.

2. Assignee accepts the Assigned Interests subject to all of the express and implied covenants and obligations of the Leases, insofar as they relate to the Assigned Interests.

3. This Assignment is made by Assignor and accepted by Assignee without any warranty whatsoever and without warranty of title, either express or implied, and without recourse, except that Assignor warrants title as against all parties claiming an interest in the Assigned Interests by, through or under Assignor. This Assignment is made with full substitution and subrogation of Assignee in and to all covenants and warranties heretofore made or given by others.

4. This Assignment is made in accordance with, and is subject to all the terms, provisions, and conditions of, that certain BJU Carry and Earning Agreement effective November 1, 2012, between Assignor and Assignee (“Carry and Earning Agreement”) which is incorporated by this reference the same as though fully set out herein. However, this assignment is neither intended as, nor shall it be deemed to accomplish, a merger of the terms and provisions directly set out herein and the terms and provisions of said Carry and Earning Agreement. Should there be any conflict between this Assignment and the Carry and Earning Agreement, the terms and conditions set out in the Carry and Earning Agreement shall prevail.

5. This Assignment is subject to that certain unrecorded New Operating Agreement effective November 1, 2012.

6. The Assigned Interests do not include, and Assignor does not intend to assign and Assignee does not intend to receive, any interest in the following to the extent that such items do not directly relate to the operation of, and production oil, gas, gas condensate, casinghead gas and/or all other liquid and gaseous hydrocarbons and other substances produced therewith from, a Well: all lands, minerals, oil and gas leases and lands pooled therewith, units, working interests, executory interests, reversionary interests, net profits interests, net revenue interests, term interests, royalty and overriding royalty interests, fee interests, surface interests, and any other interests of a similar nature, all contracts, agreements, licenses, and servitudes, all easements, leases, surface use, and right-of-way agreements, all other property and equipment not directly used in connection with the operation and production of the Wells and any and all rights not expressly herein conveyed as part of the Assigned Interests.

7. The Assigned Interests do not include, and Assignor does not intend to assign and Assignee does not intend to receive, any overriding royalty interest owned by Assignor in existence as of November 1, 2012, except as may be otherwise provided in the Carry and Earning Agreement.

8. The Assigned Interest is hereby limited from the surface to the deepest depth drilled in each Well.

TO HAVE AND TO HOLD the Assigned Interests unto Assignee and its successors and assigns, subject to all the express and implied covenants and obligations of the Leases and this Assignment.

EXECUTED this ___ day of ____2014, but effective as of the date of first production for each Well as set forth on Exhibit A.

ENCANA OIL & GAS (USA) INC. by its authorized agent, Encana Services Company Ltd.
By:
	Constance D. Heath
	Director, Land Negotiation, Western Operations

NUCOR ENERGY HOLDINGS INC.
By:
	Bradford G. True
	Vice President

ACKNOWLEDGEMENTS

STATE OF COLORADO	§
	§
CITY AND COUNTY OF DENVER	§

BEFORE ME, the undersigned authority, on this day personally appeared Constance D. Heath, Director, Land Negotiation, Western Operations for Encana Services Company Ltd, authorized agent for ENCANA OIL & GAS (USA) INC. known to me to be the person whose name is subscribed to the foregoing instrument, and acknowledged to me that she executed the same for the purposes and consideration therein expressed and in the capacity therein stated.

GIVEN UNDER MY HAND AND OFFICIAL SEAL OF OFFICE on this ____ day of __________, 2014.

MY COMMISSION EXPIRES:
	Notary Public in and for the State of Colorado

STATE OF    _________________________________	§
	§
COUNTY OF    _______________________________	§

BEFORE ME, the undersigned authority, on this day personally appeared, Bradford G. True, Vice President for NUCOR ENERGY HOLDINGS INC. known to me to be the person whose name is subscribed to the foregoing instrument, and acknowledged to me that he executed the same for the purposes and consideration therein expressed and in the capacity therein stated.

GIVEN UNDER MY HAND AND OFFICIAL SEAL OF OFFICE on this ____ day of __________, 2014.

MY COMMISSION EXPIRES:
	Notary Public

Recording Requested and when Recorded

EX-12

Exhibit 12

Nucor Corporation

2014 Form 10-K

Computation of Ratio of Earnings to Fixed Charges

	Year-ended December 31,
	2010			2011			2012			2013			2014
	(In thousands, except ratios)
Earnings
Earnings before income taxes and noncontrolling interests	$	267,115		$	1,251,812		$	852,940		$	791,123		$	1,204,577
Plus: (earnings)/losses from equity investments		32,082			10,043			13,323			(9,297	)		(13,505	)
Plus: fixed charges (includes interest expense and amortization of bond issuance costs and settled swaps and estimated interest on rent expense)		163,626			183,541			179,169			164,128			178,240
Plus: amortization of capitalized interest		2,332			2,724			2,550			3,064			4,166
Plus: distributed income of equity investees		4,923			3,883			9,946			8,708			53,738
Less: interest capitalized		(940	)		(3,509	)		(4,715	)		(10,913	)		(2,946	)
Less: pre-tax earnings in noncontrolling interests in subsidiaries that have not incurred fixed charges		(73,110	)		(83,591	)		(88,507	)		(97,504	)		(101,844	)
Total earnings before fixed charges	$	396,028		$	1,364,903		$	964,706		$	849,309		$	1,322,426
Fixed charges
Interest cost and amortization of bond issuance and settled swaps	$	162,213		$	182,321		$	178,218		$	162,899		$	177,088
Estimated interest on rent expense		1,413			1,220			951			1,229			1,152
Total fixed charges	$	163,626		$	183,541		$	179,169		$	164,128		$	178,240
Ratio of earnings to fixed charges		2.42			7.44			5.38			5.17			7.42

EX-13

Exhibit 13

  FINANCIAL HIGHLIGHTS               3        

FINANCIAL HIGHLIGHTS   (dollar and share amounts in thousands, except per share data)  

	2014		2013		% CHANGE
FOR THE YEAR
Net sales	$	21,105,141	$	19,052,046		11%
Earnings:
Earnings before income taxes and noncontrolling interests		1,204,577		791,123		52%
Provision for income taxes		388,787		205,594		89%
Net earnings		815,790		585,529		39%
Earnings attributable to noncontrolling interests		101,844		97,504		4%
Net earnings attributable to Nucor stockholders		713,946		488,025		46%
Per share:
Basic		2.22		1.52		46%
Diluted		2.22		1.52		46%
Dividends declared per share		1.4825		1.4725		1%
Percentage of net earnings to net sales		3.4%		2.6%
Return on average stockholders’ equity		9.3%		6.4%
Capital expenditures		568,867		1,230,418		-54%
Depreciation		652,000		535,852		22%
Acquisitions (net of cash acquired)		768,581		—		not meaningful
Sales per employee		921		859		7%
AT YEAR END
Working capital	$	4,344,112	$	4,449,830		-2%
Property, plant and equipment, net		5,287,639		4,917,024		8%
Long-term debt (including current maturities)		4,376,935		4,380,200		—
Total Nucor stockholders’ equity		7,772,470		7,645,769		2%
Per share		24.36		24.02		1%
Shares outstanding		319,033		318,328		—
Employees		23,600		22,300		6%

FORWARD-LOOKING STATEMENTS Certain statements made in this annual report are forward-looking statements that involve risks and uncertainties. The words “believe,” “expect,” “project,” “will,” “should,” “could” and similar expressions are intended to identify those forward-looking statements. These forward-looking statements reflect the Company’s best judgment based on current information, and although we base these statements on circumstances that we believe to be reasonable when made, there can be no assurance that future events will not affect the accuracy of such forward-looking information. As such, the forward-looking statements are not guarantees of future performance, and actual results may vary materially from the projected results and expectations discussed in this report. Factors that might cause the Company’s actual results to differ materially from those anticipated in forward-looking statements include, but are not limited to: (1) the sensitivity of the results of our operations to prevailing steel prices and changes in the supply and cost of raw materials, including pig iron, iron ore and scrap steel; (2) availability and cost of electricity and natural gas which could negatively affect our cost of steel production or could result in a delay or cancelation of existing or future drilling within our natural gas working interest drilling programs; (3) critical equipment failures and business interruptions; (4) market demand for steel products, which, in the case of many of our products, is driven by the level of nonresidential construction activity in the U.S.; (5) competitive pressure on sales and pricing, including pressure from imports and substitute materials; (6) impairment in the recorded value of inventory, equity investments, fixed assets, goodwill or other long-lived assets; (7) uncertainties surrounding the global economy, including the severe economic downturn in construction markets and excess world capacity for steel production; (8) fluctuations in currency conversion rates; (9) U.S. and foreign trade policies affecting steel imports or exports; (10) significant changes in laws or government regulations affecting environmental compliance, including legislation and regulations that result in greater regulation of greenhouse gas emissions that could increase our energy costs and our capital expenditures and operating costs or cause one or more of our permits to be revoked or make it more difficult to obtain permit modifications; (11) the cyclical nature of the steel industry; (12) capital investments and their impact on our performance; and (13) our safety performance.

        22               MANAGEMENT’S DISCUSSION AND ANALYSIS OF FINANCIAL CONDITION AND RESULTS OF     OPERATIONS  

OVERVIEW

STEEL INDUSTRY CONDITIONS

After five years of recession, the worst the United States had experienced in decades, we began to see modest improvement in general economic indicators and manufacturing activity during 2014. There have been some recent positive trends in nonresidential construction markets (the sector to which we are most closely tied and the largest end market for steel), most likely due to a rise in consumer spending and the cautious realization of previously postponed business investment. The domestic automotive market, which is the second largest end market for steel, experienced its strongest year since the recession with over 16 million cars and light trucks sold in 2014 and further growth anticipated in 2015. Also contributing to the improvement in recent years was significant growth in domestic energy-related steel, which is the third largest end market for steel in the United States. With the global collapse in oil prices in the fourth quarter of 2014, activity in the energy sector has slowed dramatically. Long-term, we believe that lower energy prices will be good for the domestic economy.

Although both Nucor’s earnings and the markets we serve improved in 2014, we remain greatly constrained by the impact of global overcapacity. Weakening conditions in Europe, slowing growth in China and the strengthening of the dollar against other foreign currencies have made the U.S. markets a prime target for foreign imports. While the steel industry has historically been characterized by periods of overcapacity and intense competition for sales among producers, we are currently experiencing an era of global overcapacity that is unprecedented. Despite the bankruptcies of numerous domestic steel companies and ongoing global steel industry consolidation, the extraordinary increase in China’s steel production in the last decade, together with the excess capacity from other countries that have state-owned enterprises (SOEs) or export-focused steel industries, have exacerbated this overcapacity issue domestically as well as globally. According to the American Iron and Steel Institute, global steel overcapacity in 2014 was estimated at over 630 million tons per year, with China’s overcapacity being the largest piece at over 370 million tons. The Chinese overcapacity alone is estimated to be three times greater than the entire U.S. annual demand for steel.

Imported steel and steel products continue to present unique challenges for us because foreign producers often benefit from government subsidies, either directly through SOEs or indirectly through government-owned or controlled financial institutions. Foreign imports of finished and semi-finished steel increased 38% over 2013 and now account for approximately 34% of the U.S. steel market, despite significant unused cost-competitive domestic capacity. Products that we produce that experienced the most significant increases in imports by percentage include: cold-rolled and galvanized sheet, plate in coils and cut lengths and heavy structural shapes. Countries that had the largest increase in imports in 2014 include Russia, Turkey, China and South Korea.

China continues to pose a major challenge in particular. It is the world’s largest producer and exporter of steel, making more than 49% of the steel produced globally. We believe Chinese producers, many of which are government-owned in whole or in part, continue to benefit from their government’s manipulation of foreign currency exchange rates and from the receipt of government subsidies, which allows them to sell steel into our markets at artificially low prices.

China is not only selling steel at artificially low prices into our domestic market but also across the globe. When it does so, steel products that would otherwise have been consumed by the local steel customers in other countries are displaced into global markets, compounding the issue. In a more indirect manner, but still significant, is the import of fabricated steel products, such as oil country tubular goods, wind towers and other construction components that were produced in China.

Domestic steel industry markets are improving, allowing Nucor to deliver solid improvement in our performance in 2014. The steel industry has always been cyclical in nature, but North American producers of steel and steel products have been facing and are continuing to face some of the most arduous global market conditions they have experienced in history. The average capacity utilization rate of U.S. steel mills was at a historically unprecedented low of 52% in 2009. Since then, the average industry capacity utilization rate increased to approximately 77% in both 2014 and 2013. These rates, though improved, still compare unfavorably to capacity utilization rates of 81% and 87% in 2008 and 2007, respectively. Although domestic demand for steel and steel products is expected to improve further in 2015, it is unlikely that average capacity utilization rates will increase significantly due to the onslaught of steel imports into the U.S. The average utilization rates of all operating facilities in our steel mills, steel products and raw materials segments were approximately 78%, 64% and 63%, respectively, in 2014, compared with 74%, 58% and 62%, respectively, in 2013.

Macro-level uncertainties in world markets will almost certainly continue to weigh on global and domestic growth in 2015. We believe our net sales and financial results will be similar to 2014, but they will continue to be adversely affected by these general global economic factors as well as the global steel production overcapacity issue.

OUR CHALLENGES AND RISKS

Sales of many of our products are largely dependent upon capital spending in the nonresidential construction markets in the United States, including in the industrial and commercial sectors, as well as capital spending on infrastructure that is publicly funded, such as bridges, schools, prisons and hospitals. Unlike recoveries from past recessions, the recovery from the recession of 2008-2009 has not yet included a strong recovery in the severely depressed nonresidential construction market. Only recently has capital spending on nonresidential construction projects shown any real signs of life. We do not expect to see strong growth in our net sales until we see a more sustained increase in capital spending on these types of construction projects.

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The significant recent surge in artificially cheap exports by some of our major foreign competitors into the United States and elsewhere reduces our net sales and adversely impacts our financial results. Aggressive enforcement of trade rules by the World Trade Organization to limit unfairly traded imports remains uncertain, although it is critical to our ability to remain competitive. We have been encouraged by recent trade enforcement actions the U.S. government recently completed, including terminating its suspension agreement with Russia for hot-rolled steel imports, assessing duties on oil country tubular goods from South Korea and five other countries and ruling that the domestic rebar industry has been materially injured as a result of dumped and subsidized rebar imports from Turkey and Mexico. We continue to believe that assertive enforcement of world trade rules must be one of the highest priorities of the United States government.

A major uncertainty we continue to face in our business is the price of our principal raw material, ferrous scrap, which is volatile and often increases or decreases rapidly in response to changes in domestic demand, unanticipated events that affect the flow of scrap into scrap yards and changes in foreign demand for scrap. In periods of rapidly increasing raw material prices in the industry, which is often also associated with periods of strong or rapidly improving steel market conditions, being able to increase our prices for the products we sell quickly enough to offset increases in the prices we pay for ferrous scrap is challenging but critical to maintaining our profitability. We attempt to mitigate the scrap price risk by managing scrap inventory levels at the steel mills to match the anticipated demand over the next several weeks for various steel products. Certain scrap substitutes, including pig iron, have longer lead times for delivery than scrap, which can make this inventory management strategy difficult to achieve. Continued successful implementation of our raw material strategy, including key investments in direct reduced iron (DRI) production coupled with the scrap brokerage and processing services performed by our team at The David J. Joseph Company (DJJ), give us greater control over our metallic inputs and thus also help us to mitigate this risk.

During periods of stronger or improving steel market conditions, we are more likely to be able to pass through to our customers, relatively quickly, the increased costs of ferrous scrap and scrap substitutes and to protect our gross margins from significant erosion. During weaker or rapidly deteriorating steel market conditions, including the global steel market environment of the past several years, weak steel demand, low industry utilization rates, and the impact of imports create an even more intensified competitive environment. All of those factors, to some degree, impact pricing, which increases the likelihood that Nucor will experience lower gross margins.

Although the majority of our steel sales are to spot market customers who place their orders each month based on their business needs and our pricing competitiveness compared to both domestic and global producers and trading companies, we also sell contract tons, primarily in our sheet operations. Approximately 50% of our sheet sales were to contract customers in 2014 (65% in both 2013 and 2012), with the balance in the spot market at the prevailing prices at the time of sale. Steel contract sales outside of our sheet operations are not significant. The amount of tons sold to contract customers depends on the overall market conditions at the time, how the end-use customers see the market moving forward and the strategy that Nucor management believes is appropriate to the upcoming period. Nucor management considerations include maintaining an appropriate balance of spot and contract tons based on market projections and appropriately supporting our diversified customer base. The percentage of tons that is placed under contract also depends on the overall market dynamics and customer negotiations. In years of strengthening demand, we typically see an increase in the percentage of sheet sales sold under contract as our customers have an expectation that transaction prices will rapidly rise and available capacity will quickly be sold out. To mitigate this risk, customers prefer to enter into contracts in order to obtain committed volumes of supply from the mills. Our contracts include a method of adjusting prices on a periodic basis to reflect changes in the market pricing for steel and/ or scrap. Market indices for steel generally trend with scrap pricing changes but during periods of steel market weakness, including the market conditions of the past several years, the more intensified competitive steel market environment can cause the sales price indices to result in reduced gross margins and profitability. Furthermore, since the selling price adjustments are not immediate, there will always be a timing difference between changes in the prices we pay for raw materials and the adjustments we make to our contract selling prices. Generally, in periods of increasing scrap prices, we experience a short-term margin contraction on contract tons. Conversely, in periods of decreasing scrap prices, we typically experience a short-term margin expansion. Contract sales typically have terms ranging from six to twelve months.

Another significant uncertainty we face is the cost of energy. The availability and prices of electricity and natural gas are influenced today by many factors including changes in supply and demand, advances in drilling technology and, increasingly, by changes in public policy relating to energy production and use. Proposed regulation of greenhouse gas emissions from new and refurbished power plants could increase our cost of electricity in future years, particularly if they are adopted in a form that requires deep reductions in greenhouse gas emissions. Adopting these regulations in an onerous form could lead to foreign producers that are not affected by them gaining a competitive advantage over us. We are monitoring these regulatory developments closely and will seek to educate public policy makers during the adoption process about their potential impact on our business and the U.S. manufacturing base.

Finally, due to our natural gas working interest drilling programs with Encana, a substantial or extended decline in natural gas prices could have a material adverse effect on these programs and, by extension, us. In the fourth quarter of 2013, we announced a joint decision with Encana to temporarily suspend drilling new wells until there is a sustained improvement in natural gas pricing. In the fourth quarter of 2014, Nucor and Encana agreed to further suspend drilling through calendar 2015 except for a de minimis number of wells that are necessary in order to retain leasehold rights. A substantial or extended decline in the price of natural gas could result in further delays or cancelation of existing or future drilling programs or curtailment in production at some properties, all of which could have an adverse

      24      

effect on our revenues, profitability and cash flows. In addition, natural gas drilling and production are subject to intense federal and state regulation as well as to public interest in environmental protection. Such regulation and interest, when coupled, could result in these drilling programs being forced to comply with certain future regulations, resulting in unknown impacts on the programs’ ability to achieve the cost and hedge benefits we expect from the programs.

OUR STRENGTHS AND OPPORTUNITIES

We are North America’s most diversified steel producer. As a result, our short-term performance is not tied to any one market. Since 2009 we have made investments of nearly $6 billion on projects that are not only diversifying our product offerings but also the markets that we serve. These investments will grow our long-term earnings power by expanding our product portfolio into higher value-added offerings that are less vulnerable to imports, improving our cost structure and further building upon our market leadership positions. The pie chart below shows the diversity of our product mix by total tons sold to outside customers in 2014.

Nucor’s raw material supply chain is another important strength. Our investment in DRI production facilities and scrap yards, as well as our access to international raw materials markets, provides Nucor with significant flexibility in optimizing our raw materials costs. Additionally, having a significant portion of our raw materials supply under our control minimizes risk associated with the global sourcing of raw materials, particularly since a good deal of scrap substitutes comes from regions of the world that have historically experienced greater political turmoil.

Our highly variable low-cost structure, combined with our financial strength and liquidity, has allowed us to successfully navigate cyclical severely depressed steel industry market conditions in the past. In such times, our incentive-based pay system reduces our payroll costs, both hourly and salary, which helps to offset lower selling prices. Our pay-for-performance system that is closely tied to our levels of production also allows us to keep our work force intact and to continue operating our facilities when some of our competitors with greater fixed costs are forced to shut down some of their facilities. Because we use electric arc furnaces to produce our steel, we can easily vary our production levels to match short-term changes in demand, unlike our integrated competitors. We believe these strengths also provide us further opportunities to gain market share during such times.

EVALUATING OUR OPERATING PERFORMANCE

We report our results of operations in three segments: steel mills, steel products and raw materials. Most of the steel we produce in our mills is sold to outside customers, but a significant percentage is used internally by some of the facilities in our steel products segment.

We begin measuring our performance by comparing our net sales, both in total and by individual segment, during a reporting period with our net sales in the corresponding period in the prior year. In doing so, we focus on changes in and the reasons for such changes in the two key variables that have the greatest influence on our net sales: average sales price per ton during the period and total tons shipped to outside customers.

We also focus on both dollar and percentage changes in gross margins, which are key drivers of our profitability, and the reasons for such changes. There are many factors from period to period that can affect our gross margins. One consistent area of focus for us is changes in “metal margins,” which is the difference between the selling price of steel and the cost of scrap and scrap substitutes. Increases in the cost of scrap and scrap substitutes that are not offset by increases in the selling price of steel can quickly compress our margins and reduce our profitability.

Another factor affecting our gross margins in any given period is the application of the last-in, first-out (LIFO) method of accounting to a substantial portion of our inventory (43% of total inventories as of December 31, 2014). LIFO charges or credits for interim periods are based on management’s interim period-end estimates, after considering current and anticipated market conditions, of both inventory costs and quantities at fiscal year end. The actual year end amounts may differ significantly from these estimated interim amounts.

      25      

Annual LIFO charges or credits are largely based on the relative changes in cost and quantities year over year, primarily with raw material inventory in the steel mills segment.

Because we are such a large user of energy, material changes in energy costs per ton can significantly affect our gross margins as well. Lower energy costs per ton increase our gross margins. Generally, our energy costs per ton are lower when the average utilization rates of all operating facilities in our steel mills segment are higher.

Changes in marketing, administrative and other expenses, particularly profit sharing costs, can have a material effect on our results of operations for a reporting period as well. Profit sharing costs vary significantly from period to period as they are based upon changes in our pre-tax earnings and are a reflection of our pay-for-performance system that is closely tied to our levels of production.

EVALUATING OUR FINANCIAL CONDITION

We evaluate our financial condition each reporting period by focusing primarily on the amounts of and reasons for changes in cash provided by operating activities, our current ratio, the turnover rate of our accounts receivable and inventories, the amount and reasons for changes in cash used in or provided by investing activities and financing activities and our cash and cash equivalents and short-term investments position at period end. Our conservative financial practices have served us well in the past and are serving us well today. As a result, our financial position remains strong despite the negative effects on our business of global overcapacity and the continued weakness in the global economy.

COMPARISON OF 2014 TO 2013

RESULTS OF OPERATIONS

NET SALES

Net sales to external customers by segment for 2014 and 2013 were as follows:

(in thousands)

Year Ended December 31,	2014		2013		% Change
Steel mills	$	14,723,642	$	13,311,948		11%
Steel products		4,032,385		3,607,333		12%
Raw materials		2,349,114		2,132,765		10%
Total net sales to external customers	$	21,105,141	$	19,052,046		11%

Net sales for 2014 increased 11% from the prior year. The average sales price per ton increased 3% from $803 in 2013 to $830 in 2014, while total tons shipped to outside customers increased 7% in 2014 as compared to 2013.

      26      

In the steel mills segment, production and sales tons were as follows:

(in thousands)

Year Ended December 31,	2014		2013		% Change
Steel production		21,135		19,900		6%
Outside steel shipments		18,681		17,733		5%
Inside steel shipments		3,286		2,917		13%
Total steel shipments		21,967		20,650		6%

Net sales to external customers in the steel mills segment increased 11% due to a 5% increase in the average sales price per ton from $751 in 2013 to $788 in 2014 and a 5% increase in tons sold to outside customers.

The sheet, bar, structural and plate product groups all experienced an increase in average sales price per ton compared with 2013 due to stronger demand and new product offerings. The strongest markets for the steel mills segment were manufactured goods, including automotive, energy and heavy truck. Steel mills segment sales were positively impacted by favorable trends in nonresidential construction markets during 2014. Energy markets were strong for the steel mills segment for 2013 and most of 2014. However, the collapse in oil prices in late 2014 triggered inventory reductions among pipe and tube producers which negatively impacted volumes and pricing at our sheet mills late in the year. Though average sales prices increased for the steel mills segment in 2014 compared with 2013, high levels of finished and semi-finished steel imports, which increased 38% compared to 2013, continued to apply pressure on pricing during 2014.

Tonnage data for the steel products segment is as follows:

(in thousands)

Year Ended December 31,	2014		2013		% Change
Joist sales		421		342		23%
Deck sales		396		334		19%
Cold finished sales		504		474		6%
Fabricated concrete reinforcing steel sales		1,185		1,065		11%

Net sales to external customers in the steel products segment increased 12% from 2013 due to an 11% increase in tons sold to outside customers and a 1% increase in the average sales price per ton from $1,375 in 2013 to $1,383 in 2014. Particularly strong volume growth was achieved in our joist, decking and rebar fabrication products. Shipments to external customers decreased 17% in the fourth quarter of 2014 from the third quarter of 2014 because of typical seasonality in nonresidential construction markets. The increase in the quantity of steel products sold in 2014 as compared to 2013 is largely due to the continued improvement in nonresidential construction markets. As measured by square footage, U.S. nonresidential construction activity increased by approximately 7% in 2014.

Sales for the raw materials segment increased 10% from 2013 primarily due to increased volumes in DJJ’s brokerage and recycling businesses and our natural gas drilling activities, partially offset by decreased pricing at DJJ. Approximately 81% of outside sales in the raw materials segment in 2014 were from brokerage operations of DJJ and approximately 12% of the outside sales were from the scrap processing facilities (83% and 12%, respectively, in 2013). Sales for DJJ in the fourth quarter of 2014 decreased from the third quarter of 2014 due primarily to decreased volumes at our brokerage and processing businesses. Sales in the fourth quarter of 2014 decreased from the fourth quarter of 2013 due to decreased average sales prices and volumes at the brokerage and processing businesses.

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GROSS MARGIN

In 2014, Nucor recorded gross margins of $1.91 billion (9%) compared to $1.41 billion (7%) in 2013. The year-over-year dollar and gross margin percentage increases were primarily the result of the 3% increase in the average sales price per ton and 7% increase in tons shipped to outside customers, along with the following factors:

·	In the steel mills segment, the average scrap and scrap substitute cost per ton used increased 1% from $376 in 2013 to $381 in 2014; however, metal margins also increased for our sheet, bar, structural and plate products from 2013. The increase in metal margins more than offset the increase in the average scrap and scrap substitute cost per ton used in 2014 compared to 2013. Metal margins in the fourth quarter of 2014 were higher than in the fourth quarter of 2013, but were lower compared to the third quarter of 2014.
	Scrap prices are driven by the global supply and demand for scrap and other iron-based raw materials used to make steel. We experienced more quarterly volatility in scrap costs during 2014 than in 2013. We believe that the current domestic scrap market is significantly overpriced compared with iron ore and global scrap markets. Based on increased imported steel penetration, slack international demand for domestic scrap, the strength of the U.S. dollar and moderating domestic demand for scrap, we expect scrap prices to fall significantly in early 2015.
·	Nucor’s gross margins are significantly impacted by the application of the LIFO method of accounting. LIFO charges or credits are largely based on the relative changes in cost and quantities year over year, primarily within raw material inventory in the steel mills segment. The average scrap and scrap substitute cost per ton in ending inventory within our steel mills segment at December 31, 2014 decreased 11% as compared to December 31, 2013. As a result, Nucor recorded a LIFO credit of $57.3 million in 2014 (a LIFO charge of $17.4 million in 2013). The decreases in cost per ton were driven by market conditions at the end of 2014, which experienced weaker demand for steel and raw materials than market conditions at the end of 2013.
·	Total steel mill energy costs increased approximately $2 per ton from 2013 to 2014 primarily due to higher unit costs for natural gas and electricity. Total steel mill energy costs per ton for the year reached a peak in the first quarter of 2014 due to harsh winter weather conditions that drove up energy demand and costs. Due to the efficiency of Nucor’s steel mills, energy costs remained less than 6% of the sales dollar in 2014 and 2013.
·	Nucor’s 2014 gross margins were negatively impacted by $8.9 million in inventory-related purchase accounting adjustments associated with our acquisition of Nucor Steel Gallatin in the fourth quarter of 2014 (none in 2013).
·	Gross margins in the steel products segment increased significantly in 2014 compared to 2013 due in large part to the improving conditions in the nonresidential construction markets. Our joist, deck, rebar, cold finish and building systems operations all experienced margin improvement in 2014 compared to 2013.
·	Our Nucor Steel Louisiana DRI facility, which began production operations in December 2013, experienced significant operational losses, including start-up costs of $87.8 million in 2014 and $35.2 million in 2013, that negatively impacted gross margins.
	The start-up costs in 2013 and the first three quarters of 2014 were primarily due to yield loss, which in our experience is not unusual when a new facility is in the early stage of production. Although Nucor Steel Louisiana has had significant operational losses, it achieved excellent quality and volume levels. In the fourth quarter of 2014, an equipment failure occurred at Nucor Steel Louisiana related to the process gas heater. There were no injuries, no environmental impact and no damage to any other part of the DRI facility as a result of this incident. Production operations were suspended after the failure and have not restarted. As Nucor Steel Louisiana was not operational for almost the entire fourth quarter of 2014, we classified the facility’s fourth quarter operating loss of approximately $35 million, the majority of which impacts gross margin, as start-up costs. We are in the process of making the necessary repairs and adjustments to the process gas heater. Nucor Steel Louisiana is estimated to resume operations late in the first quarter of 2015. We expect a small reduction in the operating loss of Nucor Steel Louisiana in the first quarter of 2015 as compared to the fourth quarter of 2014.
·	Gross margins related to DJJ’s scrap processing and brokerage operations increased during 2014 compared to 2013. The brokerage group benefited from stronger domestic scrap sales. Though the gross margin for the scrap processing group improved during 2014 compared to 2013, the group experienced a decline in gross margin from the third quarter of 2014 to the fourth quarter of 2014.

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MARKETING, ADMINISTRATIVE AND OTHER EXPENSES

A major component of marketing, administrative and other expenses is profit sharing and other incentive compensation costs. These costs, which are based upon and fluctuate with Nucor’s financial performance, increased from 2013 to 2014. In 2014, profit sharing costs consisted of $110.1 million of contributions, including the Company’s matching contribution, made to the Company’s Profit Sharing and Retirement Savings Plan for qualified employees ($71.7 million in 2013). Other bonus costs also fluctuate based on Nucor’s achievement of certain financial performance goals, including comparisons of Nucor’s financial performance to peers in the steel industry and other companies. Stock-based compensation included in marketing, administrative and other expenses decreased by 4% to $21.9 million in 2014 compared with $22.9 million in 2013 and includes costs associated with vesting of stock awards granted in prior years.

Included in marketing, administrative and other expenses in 2014 is a $9.0 million charge related to the disposal of assets and a $12.5 million charge related to the partial write-down of assets, both in the steel mills segment.

In the third quarter of 2013, one of three iron ore storage domes collapsed at Nucor Steel Louisiana in St. James Parish. As a result, Nucor recorded a partial write-down of assets at the facility, including $21.0 million of property, plant and equipment, and $7.0 million of inventory, offset by a $14.0 million insurance receivable that was based on management’s best estimate of probable insurance recoveries. The associated net charge of $14.0 million was included in marketing, administrative and other expenses in 2013. As of December 31, 2014, Nucor has received initial payments of $10.3 million related to the insurance receivable. The two remaining storage domes have a carrying value of approximately $20 million. Nucor continues to assess these two domes and the assets associated with them. As a result of the ongoing assessment, it is possible that Nucor will make operational decisions that could impact the carrying value of the domes and the associated assets and the amount of insurance proceeds claimed by and payable to us.

EQUITY IN (EARNINGS) LOSSES OF UNCONSOLIDATED AFFILIATES

Equity method investment earnings, including amortization expense and other purchase accounting adjustments, were $13.5 million in 2014 and $9.3 million in 2013. The increase in equity method investment earnings from 2014 to 2013 is primarily due to greater equity method earnings at NuMit and a decrease in losses at Duferdofin Nucor.

INTEREST EXPENSE (INCOME)

Net interest expense is detailed below:

(in thousands)

Year Ended December 31,	2014			2013
Interest expense	$	174,142		$	151,986
Interest income		(4,886	)		(5,091	)
Interest expense, net	$	169,256		$	146,895

The 15% increase in gross interest expense from 2013 is primarily attributable to a 13% increase in average debt outstanding. Gross interest income decreased 4% due to a 13% decrease in average investments, partially offset by an increase in the average interest rate on investments.

EARNINGS BEFORE INCOME TAXES AND NONCONTROLLING INTERESTS

Earnings before income taxes and noncontrolling interests by segment for 2014 and 2013 are as follows:

(in thousands)

Year Ended December 31,	2014			2013
Steel mills	$	1,594,352		$	1,156,715
Steel products		166,323			82,129
Raw materials		(29,053	)		13,686
Corporate/eliminations		(527,045	)		(461,407	)
Earnings before income taxes and      noncontrolling interests	$	1,204,577		$	791,123

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Earnings before income taxes and noncontrolling interests in the steel mills segment for 2014 increased significantly from 2013 due to higher sales volume, higher average sales prices and higher metal margins resulting from factors discussed above. Our recent capital project expansions have allowed us to broaden our product offerings and market share, particularly in the special bar quality, cold-rolled and galvanized sheet and plate steel products. These higher-value product offerings, which tend to be less vulnerable to imports, benefited the profitability of the steel mills segment in 2014. The improved results of the steel mills segment were achieved despite imports being at levels not seen since 2006. The strongest markets for the steel mills segment continued to be manufactured goods, including automotive, energy and heavy truck. Energy markets were strong for the steel mills segment for 2013 and most of 2014. However, the collapse in oil prices in late 2014 triggered inventory reductions among pipe and tube producers that negatively impacted volumes and pricing at our sheet mills late in the year. The steel mills segment profitability in 2014 also benefited from improving conditions in nonresidential construction markets. Negatively impacting the steel mills segment profitability in 2014 were the $12.5 million charge related to the partial write-down of assets, $9.0 million charge related to the disposal of assets, and $8.9 million of inventory-related purchase accounting adjustments at newly acquired Nucor Steel Gallatin. The steel mills segment profitability benefited from improved results at NuMit and Duferdofin Nucor.

In the steel products segment, earnings before income taxes and noncontrolling interests increased significantly in 2014 compared to 2013. The largest increases in profitability in 2014 compared to 2013 were at our joist, deck, and building systems operations, while the profitability of our rebar and cold finish operations also increased. The steel products segment has benefited from improving conditions in nonresidential construction markets. However, 2014 nonresidential construction starts, a measure of nonresidential building activity, represented only about 56% of 2007’s peak activity level. Backlog tons for the steel products segment were approximately 10% higher at the end of 2014 than at the end of 2013, including a record level of backlog tons since 2008 for our rebar fabrication businesses at the end of 2014.

The decrease in profitability of our raw materials segment for 2014 as compared to 2013 is due primarily to operating losses, which include start-up costs, of approximately $135 million at our Louisiana DRI facility (production did not begin at the facility until late December 2013). Production operations at the Louisiana DRI facility were suspended in the fourth quarter of 2014 due to an equipment failure related to the process gas heater. Prior to that, production outages in June, July and September of 2014 were necessary to implement changes intended to improve consistency in the production process and yield performance at Nucor Steel Louisiana. An additional factor affecting the performance of Nucor Steel Louisiana in 2014 was the impact of consuming higher-cost iron ore purchased earlier in the year under a quarterly lag pricing mechanism. Earnings before income taxes and noncontrolling interest in the raw materials segment in 2013 was impacted by the charges related to the net $14.0 million write-down of inventory and property, plant and equipment as a result of the dome collapse at Nucor Steel Louisiana that occurred in the third quarter of 2013.

Partially offsetting the losses at the Louisiana DRI plant was increased profitability from DJJ’s brokerage and scrap processing operations due to increased volumes and margin improvement, and increased profitability from our natural gas working interest drilling investment. The DRI facility in Trinidad also experienced an increase in profitability.

NONCONTROLLING INTERESTS

Noncontrolling interests represent the income attributable to the minority interest partners of Nucor’s joint ventures, primarily Nucor-Yamato Steel Company (NYS) of which Nucor owns 51%. The 4% increase in earnings attributable to noncontrolling interests was primarily due to increased average sales prices and increased metal margins, partially offset by decreased volumes and the impact of a planned three week outage associated with a capital project in the second quarter of 2014. Under the NYS limited partnership agreement, the minimum amount of cash to be distributed each year to the partners is the amount needed by each partner to pay applicable U.S. federal and state income taxes.

PROVISION FOR INCOME TAXES

The effective tax rate in 2014 was 32.3% compared with 26.0% in 2013. The increase in the rate between 2013 and 2014 is primarily due to a $21.3 million favorable non-cash out-of-period adjustment to deferred tax balances in 2013 compared to a $13.2 million favorable non-cash out-of-period adjustment to tax balances in 2014, the change in the relative proportions of net earnings attributable to noncontrolling interests and the foreign rate differential to total pre-tax earnings between the periods. The out-of-period items did not have a material impact to periods in which the corrections were recorded or in any previously reported period individually and in the aggregate. The Internal Revenue Service (IRS) is examining Nucor’s 2012 federal income tax return. Management believes that the Company has adequately provided for any adjustments that may arise from this audit. The 2011 and 2013 tax years are also open to examination by the IRS. U.S. federal income tax matters have been concluded for years through 2010. The Canada Revenue Agency is examining the 2012 Canadian returns for Harris Steel Group Inc. and certain related affiliates. Tax years 2009 through 2013 remain open to examination by other major taxing jurisdictions to which Nucor is subject (primarily Canada and other state and local jurisdictions).

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NET EARNINGS AND RETURN ON EQUITY

Nucor reported net earnings of $713.9 million, or $2.22 per diluted share, in 2014, compared to net earnings of $488.0 million, or $1.52 per diluted share, in 2013. Net earnings attributable to Nucor stockholders as a percentage of net sales were 3% in both 2014 and 2013. Return on average stockholders’ equity was 9% and 6% in 2014 and 2013, respectively.

COMPARISON OF 2013 TO 2012

RESULTS OF OPERATIONS

NET SALES

Net sales to external customers by segment for 2013 and 2012 were as follows:

					(in thousands)
Year Ended December 31,	2013		2012		% Change
Steel mills		$13,311,948		$13,781,797		-3%
Steel products		3,607,333		3,738,381		-4%
Raw materials		2,132,765		1,909,095		12%
Total net sales to external customers		$19,052,046		$19,429,273		-2%

Net sales for 2013 decreased 2% from the prior year. The average sales price per ton decreased 5% from $841 in 2012 to $803 in 2013, while total tons shipped to outside customers increased 3% in 2013 as compared to 2012.

In the steel mills segment, production and sales tons were as follows:

					(in thousands)
Year Ended December 31,	2013		2012		% Change
Steel production		19,900		19,865		—
Outside steel shipments		17,733		17,473		1%
Inside steel shipments		2,917		2,769		5%
Total steel shipments		20,650		20,242		2%

Net sales to external customers in the steel mills segment decreased 3% due to a 5% decrease in the average sales price per ton from $792 in 2012 to $751 in 2013, partially offset by a 1% increase in tons sold to outside customers.

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Tonnage data for the steel products segment is as follows:

					(in thousands)
Year Ended December 31,	2013		2012		% Change
Joist sales		342		291		18%
Deck sales		334		308		8%
Cold finished sales		474		492		-4%
Fabricated concrete reinforcing steel sales		1,065		1,180		-10%

Net sales to external customers in the steel products segment decreased 4% from 2012 due to a 3% decrease in tons sold to outside customers and a 1% decrease in the average sales price per ton from $1,393 in 2012 to $1,375 in 2013.

Sales for the raw materials segment increased 12% from 2012 primarily due to increased volumes in DJJ’s brokerage and processing operations, partially offset by decreased pricing experienced by DJJ as well as increased volumes at our natural gas drilling working interests. Approximately 83% of outside sales in the raw materials segment in 2013 were from brokerage operations of DJJ and approximately 12% of the outside sales were from the scrap processing facilities (85% and 13%, respectively, in 2012).

GROSS MARGIN

In 2013, Nucor recorded gross margins of $1.41 billion (7%) compared to $1.51 billion (8%) in 2012. The year-over-year dollar and gross margin percentage decreases were primarily the result of the 5% decrease in the average sales price per ton, partially offset by the 3% increase in tons shipped to outside customers. Additionally, gross margins were impacted by the following factors:

·   In the steel mills segment, the average scrap and scrap substitute cost per ton used decreased 8% from $407 in 2012 to $376 in 2013; however, metal margins also decreased for our sheet, bar and plate products from 2012.

·   The average scrap and scrap substitute cost per ton in ending inventory within our steel mills segment at December 31, 2013 increased 3% as compared to December 31, 2012. Ending inventory quantities also increased as compared to December 31, 2012. As a result of these factors, Nucor recorded a LIFO charge of $17.4 million in 2013 (a LIFO credit of $155.9 million in 2012).

·   Nucor’s 2012 gross margins were negatively impacted by $48.8 million in inventory-related purchase accounting adjustments associated with our acquisition of Skyline (none in 2013).

·   Gross margins at our rebar fabrication businesses increased significantly in 2013 as compared to 2012 due to higher average sales prices and the effects of management initiatives that resulted in lower costs, better selling strategies and improved supplier relationships.

·   Total steel mill energy costs decreased approximately $1 per ton from 2012 to 2013 primarily due to the negative impact of natural gas hedge settlements on our overall natural gas costs in 2012.

·   Gross margins related to DJJ’s scrap processing operations decreased significantly during 2013 compared to 2012 due to excess shredding capacity increasing DJJ’s cost of scrap purchases and weather-related effects in the first quarter of 2013 that reduced the flow of scrap into our scrap processing operations.

MARKETING, ADMINISTRATIVE AND OTHER EXPENSES

Profit sharing costs decreased from 2012 to 2013. In 2013, profit sharing costs consisted of $71.7 million of contributions, including the Company’s matching contribution, made to the Company’s Profit Sharing and Retirement Savings Plan for qualified employees ($77.7 million in 2012). Stock-based compensation included in marketing, administrative and other expenses decreased 8% to $22.9 million in 2013 compared with $25.0 million in 2012 and includes costs associated with vesting of stock awards granted in prior years.

Of the $27.0 million increase in marketing, administrative and other expenses in 2013 as compared to 2012, $15.3 million was due to the inclusion of Skyline’s results for the entire year in 2013 as compared to only being included after its June 2012 acquisition date during 2012. Additionally, in the third quarter of 2013, a storage dome collapsed at Nucor Steel Louisiana in St. James Parish. As a result, Nucor recorded a partial write-down of assets at the facility, including $7.0 million of inventory and $21.0 million of property, plant and equipment, offset by a $14.0 million insurance receivable that was based on management’s best estimate of probable insurance recoveries. Included in marketing, administrative and other expenses in 2012 was a $17.6 million loss on the sale of the assets of Nucor Wire Products Pennsylvania, Inc.

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EQUITY IN LOSSES OF UNCONSOLIDATED AFFILIATES

Nucor recorded equity method investment earnings of $9.3 million in 2013 and losses of $13.3 million in 2012. The improvement in the equity method investment earnings from 2013 to 2012 is primarily due to greater equity method earnings at NuMit, a decrease in losses at Duferdofin Nucor, and earnings at Hunter Ridge (acquired in November 2012).

IMPAIRMENT OF NON-CURRENT ASSETS

In 2013, Nucor incurred no charges for impairment of non-current assets compared to $30.0 million in 2012. In the second quarter of 2012, Nucor recorded a $30.0 million impairment charge related to its equity method investment in Duferdofin Nucor (see Note 10 to the Consolidated Financial Statements).

INTEREST EXPENSE (INCOME)

Net interest expense is detailed below:

(in thousands)

Year Ended December 31,	2013			2012
Interest expense	$	151,986		$	173,503
Interest income		(5,091	)		(11,128	)
Interest expense, net	$	146,895		$	162,375

The 12% decrease in gross interest expense from 2012 is primarily attributable to a 6% decrease in average debt outstanding and a 2% decrease in the average interest rate. Gross interest income decreased 54% due to a 50% decrease in average investments and a 45% decrease in the average interest rate on investments.

EARNINGS BEFORE INCOME TAXES AND NONCONTROLLING INTERESTS

Earnings before income taxes and noncontrolling interests by segment for 2013 and 2012 are as follows:

(in thousands)

Year Ended December 31,	2013			2012
Steel mills	$	1,156,715		$	1,162,270
Steel products		82,129			(17,140	)
Raw materials		13,686			55,264
Corporate/eliminations		(461,407	)		(347,454	)
Earnings before income taxes and noncontrolling interests	$	791,123		$	852,940

Earnings before income taxes and noncontrolling interests in the steel mills segment in 2013 decreased slightly from 2012. Gross margin was negatively affected in 2013 by lower metal margin dollars resulting from factors discussed above. The steel mills segment’s profitability in 2013 benefited from improved results from the NuMit and Duferdofin Nucor equity method investments as compared to 2012. Other factors impacting the profitability of the steel mills segment in 2012 that did not occur in 2013 were the $30.0 million impairment charge related to Duferdofin Nucor and the $48.8 million of inventory-related purchase accounting adjustments related to Skyline.

The steel products segment had earnings before income taxes and noncontrolling interests in 2013 as compared to a loss in 2012. Although the average sales price and volume for the segment were lower in 2013 than 2012, profitability in our joist, cold finish and rebar fabrication businesses improved from 2012. The steel products segment’s 2012 loss was impacted by the $17.6 million loss on the sale of assets of Nucor Wire Products Pennsylvania, Inc. in the third quarter of 2012. The steel products segment’s 2013 profitability was the first profitable year since 2008.

The profitability of our raw materials segment decreased significantly from 2012. Difficult conditions in the scrap processing industry had a negative impact on the profitability of the scrap processing operations of DJJ since the first quarter of 2012. During this time, excess shredding capacity increased competition for raw materials while the selling price of scrap decreased in 2013 as compared to 2012. Also negatively affecting profitability in the raw materials segment in 2013 were the charges related to the net $14.0 million write-down of

      33      

inventory and property, plant and equipment as a result of the dome collapse at Nucor Steel Louisiana. Nucor Steel Louisiana also had increased start-up costs in 2013 over 2012 as it began production in late December. An unplanned 18-day outage at our Trinidad DRI facility in early 2013 also contributed to lower profitability for the raw materials segment in 2013 as compared to 2012.

The decrease in results in Corporate/eliminations in 2013 was primarily due to a LIFO charge of $17.4 million in 2013 compared to a $155.9 million LIFO credit in 2012.

NONCONTROLLING INTERESTS

The 10% increase in noncontrolling interests from 2012 to 2013 was primarily attributable Nucor-Yamato Steel’s increased margins, which were primarily due to changes in product mix.

PROVISION FOR INCOME TAXES

The effective tax rate in 2013 was 26.0% compared with 30.5% in 2012. The change in the rate between 2012 and 2013 was primarily due to a $21.3 million out-of-period adjustment to the deferred tax balances recorded in 2013.

NET EARNINGS AND RETURN ON EQUITY

Nucor reported net earnings of $488.0 million, or $1.52 per diluted share, in 2013 compared to net earnings of $504.6 million, or $1.58 per diluted share, in 2012. Net earnings attributable to Nucor stockholders as a percentage of net sales were 3% in both 2013 and 2012. Return on average stockholders’ equity was 6% and 7% in 2013 and 2012, respectively.

LIQUIDITY AND CAPITAL RESOURCES

Nucor’s cash and cash equivalents and short-term investments position remained strong at $1.12 billion at the end of 2014. Approximately $156.1 million and $173.2 million of the cash and cash equivalents position at December 31, 2014 and December 31, 2013, respectively, was held by our majority-owned joint ventures. Cash flows provided by operating activities provide us with a significant source of liquidity. When needed, we have external short-term financing sources available, including the issuance of commercial paper and borrowings under our bank credit facilities. We also issue long-term debt from time to time.

In 2013, Nucor’s $1.5 billion revolving credit facility was amended and restated to extend the maturity date to August 2018, and the facility was undrawn at December 31, 2014. We believe our financial strength is a key strategic advantage among domestic steel producers, particularly during recessionary business cycles. We carry the highest credit ratings of any metals and mining company in North America, with an A rating from Standard and Poor’s and a Baa1 rating from Moody’s. Our credit ratings are dependent, however, upon a number of factors, both qualitative and quantitative, and are subject to change at any time. The disclosure of our credit ratings is made in order to enhance investors’ understanding of our sources of liquidity and the impact of our credit ratings on our cost of funds.

Based upon these factors, we expect to continue to have adequate access to the capital markets at a reasonable cost of funds for liquidity purposes when needed. This was evidenced when, during the fourth quarter of 2014, we issued approximately $300 million of commercial paper to partially fund the acquisition of Gallatin Steel Company. By the end of 2014, we had reduced the amount of commercial paper outstanding to approximately $151 million. Drawing from Nucor’s strong cash provided by operations, we expect to retire the remaining commercial paper in 2015. The next significant debt maturity is not until December 2017.

Selected Measures of Liquidity and Capital Resources
	(dollars in thousands)
December 31,	2014		2013
Cash and cash equivalents	$	1,024,144	$	1,483,252
Short-term investments		100,000		28,191
Working capital		4,344,112		4,449,830
Current ratio		3.1		3.3

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The current ratio was 3.1 at year end 2014 compared with 3.3 at year end 2013. The current ratio was negatively impacted by a 26% decrease from 2013 in cash and cash equivalents and short-term investments. The decrease in cash and cash equivalents and short-term investments was primarily due to cash paid for acquisitions of other companies, capital expenditures and dividends, partially offset by increased cash generated by operations. In addition, the $178.3 million increase in short-term debt from 2013, which was due mainly to the issuance of commercial paper, negatively affected the current ratio.

The current ratio benefited from a 14% increase in accounts receivable, a 5% increase in inventory and an 11% decrease in accounts payable as compared to year end 2013. The increase in accounts receivable was due primarily to the acquisition of Nucor Steel Gallatin, as well as a 2% increase in net sales in the fourth quarter of 2014 compared with the prior year fourth quarter. The net sales increase was the result of a 1% increase in both outside shipments and average sales price per ton in the fourth quarter of 2014 as compared with the fourth quarter of 2013. The increase in inventory from the previous year was mainly due to the addition of Nucor Steel Gallatin and an increase in inventory volumes on hand, partially offset by a decrease in scrap and iron ore prices in inventory from year end 2013. The decrease in scrap and iron ore prices was also a main driver of the decrease in accounts payable. In 2014, total accounts receivable turned approximately every five weeks and inventories turned approximately every seven weeks. These turnover rates are comparable to Nucor’s historical performance.

Funds provided by operations, cash and cash equivalents, short-term investments and new borrowings under existing credit facilities are expected to be adequate to meet future capital expenditure and working capital requirements for existing operations for at least the next 24 months.

We have a simple capital structure with no off-balance sheet arrangements or relationships with unconsolidated special purpose entities that we believe could have a material impact on our financial condition or liquidity.

OPERATING ACTIVITIES Cash provided by operating activities was $1.34 billion, an increase of 25% compared with cash provided by operating activities of $1.08 billion in 2013. The primary reason for the change was higher net earnings, which included increased levels of depreciation expense due to significant capital projects being placed in service during 2014. Partially offsetting the increase in cash generated from higher earnings were changes in operating assets and liabilities that were ($400.2) million in 2014 compared with ($235.2) million in 2013. The funding of our working capital increased over the prior year period due mainly to increases in cash used to fund federal income taxes and accounts payable, somewhat offset by a decrease in cash used to fund the purchase of inventory. Federal income tax payments have increased due to Nucor’s increased profitability. The increased levels of cash used for accounts payable is due in large part to the change in accrued plant and equipment purchases. The decrease in cash used to fund the purchase of inventory is due to the decrease in scrap prices in inventory from year end 2013.

INVESTING ACTIVITIES

Our business is capital intensive; therefore, cash used in investing activities primarily represents capital expenditures for new facilities, the expansion and upgrading of existing facilities and the acquisition of other companies. Nucor invested $668.0 million in new facilities and expansion or upgrading of existing facilities in 2014 compared with $1.20 billion in 2013, a decrease of 44%. The decrease in capital expenditures is in large part due to the completion of our Louisiana DRI facility and reduced spending on our natural gas working interest drilling program. Additionally, Nucor invested $768.6 million in the acquisition of other companies in 2014, primarily Nucor Steel Gallatin (there were no acquisitions in 2013). Another factor contributing to the increase in cash used in investing activities was the net decrease of $421.0 million in proceeds from the sale of investments and restricted investments (net of purchases) and changes in restricted cash from 2013.

FINANCING ACTIVITIES

Cash used in financing activities in 2014 was $359.0 million compared with cash provided by financing activities of $196.0 million in 2013. In 2013, Nucor issued $500.0 million of 4.00% notes due in 2023 and $500.0 million of 5.2% notes due in 2043. Net of discounts, the prior year debt issuance increased cash provided by financing activities by $999.1 million. There were no issuances of long-term debt in 2014. However, mainly due to the issuance of commercial paper in 2014, the net change in short-term debt provided cash of $178.3 million compared with ($0.7) million in 2013. Additionally, cash used to repay debt maturities was only $5.4 million in 2014 compared to $250.0 million in the prior year.

In 2014, Nucor increased its quarterly base dividend, resulting in dividends paid of $475.1 million in 2014 ($471.0 million in 2013).

Although there were no repurchases in 2014 or 2013, approximately 27.2 million shares remain authorized for repurchase under the Company’s stock repurchase program.

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Our credit facility includes only one financial covenant, which is a limit of 60% on the ratio of funded debt to total capitalization. In addition, the credit facility contains customary non-financial covenants, including a limit on Nucor’s ability to pledge the Company’s assets and a limit on consolidations, mergers and sales of assets. Our funded debt to total capital ratio was 36% at the end of 2014 and 2013, and we were in compliance with all other covenants under our credit facility.

MARKET RISK

Nucor’s largest exposure to market risk is in our steel mills and steel products segments. Our utilization rates for the steel mills and steel products facilities for the fourth quarter of 2014 were 76% and 61%, respectively. A significant portion of our steel and steel products segments sales are into the commercial, industrial and municipal construction markets. While we did see some improvement in some of these markets in 2014, they continue to be depressed when compared to historical levels. Our largest single customer in 2014 represented approximately 5% of sales and consistently pays within terms. In the raw materials segment, we are exposed to price fluctuations related to the purchase of scrap steel and iron ore. Our exposure to market risk is mitigated by the fact that our steel mills use a significant portion of the products of this segment.

Nucor’s tax-exempt industrial revenue bonds (IDRBs), including the Gulf Opportunity Zone bonds, have variable interest rates that are adjusted weekly. These IDRBs represent 23% of Nucor’s long-term debt outstanding at December 31, 2014. The remaining 77% of Nucor’s long-term debt is at fixed rates. Future changes in interest rates are not expected to significantly impact earnings. From time to time, Nucor makes use of interest rate swaps to manage interest rate risk. As of December 31, 2014, there were no such contracts outstanding. Nucor’s investment practice is to invest in securities that are highly liquid with short maturities. As a result, we do not expect changes in interest rates to have a significant impact on the value of our investment securities recorded as short-term investments.

Nucor also uses derivative financial instruments from time to time to partially manage its exposure to price risk related to natural gas purchases used in the production process as well as scrap, copper and aluminum purchased for resale to its customers. In addition, Nucor uses forward foreign exchange contracts from time to time to hedge cash flows associated with certain assets and liabilities, firm commitments and anticipated transactions. Nucor generally does not enter into derivative instruments for any purpose other than hedging the cash flows associated with specific volumes of commodities that will be purchased and processed or sold in future periods and hedging the exposures related to changes in the fair value of outstanding fixed-rate debt instruments and foreign currency transactions. Nucor recognizes all material derivative instruments in the consolidated balance sheets at fair value.

The Company is exposed to foreign currency risk primarily through its operations in Canada, Europe and Trinidad. We periodically use derivative contracts to mitigate the risk of currency fluctuations.

CONTRACTUAL OBLIGATIONS AND OTHER COMMERCIAL COMMITMENTS

The following table sets forth our contractual obligations and other commercial commitments as of December 31, 2014 for the periods presented:

(in thousands) 

	Payments Due By Period
Contractual Obligations	Total		2015		2016 - 2017		2018 - 2019		2020 and thereafter
Long-term debt		$  4,376,900		$     16,300		$   600,000		$   500,000		$3,260,600
Estimated interest on long-term debt(1)		2,308,005		178,318		353,684		241,220		1,534,783
Capital leases		27,648		3,072		6,144		6,144		12,288
Operating leases		85,389		25,085		32,113		15,624		12,567
Raw material purchase commitments(2)		2,958,520		1,200,863		1,204,309		351,058		202,290
Utility purchase commitments(2)		923,298		261,918		176,707		117,932		366,741
Natural gas drilling commitments		4,857,599		18,600		691,455		724,860		3,422,684
Other unconditional purchase obligations(3)		118,781		100,800		4,527		3,386		10,068
Other long-term obligations(4)		462,606		295,995		46,001		32,744		87,866
Total contractual obligations		$16,118,746		$2,100,951		$3,114,940		$1,992,968		$8,909,887

(1)	Interest is estimated using applicable rates at December 31, 2014 for Nucor’s outstanding fixed and variable rate debt.
(2)	Nucor enters into contracts for the purchase of scrap and scrap substitutes, iron ore, electricity, natural gas and other raw materials and related services. These contracts include multi-year commitments and minimum annual purchase requirements and are valued at prices in effect on December 31, 2014, or according to the contract language. These contracts are part of normal operations and are reflected in historical operating cash flow trends. We do not believe such commitments will adversely affect our liquidity position.
(3)	Purchase obligations include commitments for capital expenditures on operating machinery and equipment.
(4)	Other long-term obligations include amounts associated with Nucor’s early-retiree medical benefits, management compensation and guarantees.
Note:	In addition to the amounts shown in the table above, $63.0 million of unrecognized tax benefits have been recorded as liabilities, and we are uncertain as to if or when such amounts may be settled. Related to these unrecognized tax benefits, we have also recorded a liability for potential penalties and interest of $28.2 million at December 31, 2014.

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DIVIDENDS

Nucor has increased its base cash dividend every year since it began paying dividends in 1973. Nucor paid dividends of $1.48 per share in 2014 compared with $1.47 per share in 2013. In December 2014, the Board of Directors increased the base quarterly dividend to $0.3725 per share. The base quarterly dividend has more than tripled since the end of 2007. In February 2015, the Board of Directors declared Nucor’s 168th consecutive quarterly cash dividend of $0.3725 per share payable on May 11, 2015 to stockholders of record on March 31, 2015.

OUTLOOK

In 2015, we will continue to take advantage of our position of strength to grow Nucor’s long-term earnings power and shareholder value despite a U.S. economy burdened by a challenging regulatory and overall business environment. We have invested significant capital into our business since the last cyclical peak in 2008. We have done so over a broad range of strategic investments that will further enhance our ability to grow Nucor’s long-term earnings power by expanding our product portfolios into higher value-added offerings that are less vulnerable to imports, improving our highly variable low-cost structure and building upon our market leadership positions. With many of these capital projects completed and ready to yield results, we will focus on execution in order to generate strong returns on these investments.

Although macro-level uncertainties in world markets will almost certainly affect both global and domestic growth, we anticipate sales and profitability on par with 2014. Utilization rates, which grew slightly in 2014 compared to 2013, have slowed in early 2015. Although we expect the first quarter operating results to be similar to the first quarter 2014 results, they will be in the face of significant headwinds that developed for the steel industry late in 2014. The collapse in global oil prices has triggered inventory reductions among pipe and tube producers serving energy markets, an important customer group for Nucor as well as the domestic steel industry. Also, given the relative health of the domestic steel markets, imports have increased dramatically as we have entered 2015. We are anticipating a more positive trend in earnings as we enter into the second quarter and then into the second half of the year. We are therefore cautiously optimistic regarding full-year volume, pricing and profitability. We are encouraged by an improvement of approximately 10% in backlog tons at our downstream steel products segment over 2013 and we believe several end-use markets such as automotive, energy and nonresidential construction will experience some real demand improvement that will gain momentum throughout 2015. However, the effect this improvement in demand will have on our operating rates will be challenged by excess foreign steel capacity and the threat of continued increases in imported steel. We expect scrap prices to fall significantly in early 2015 and that we will continue to experience fluctuations in raw material costs throughout the year. We have made significant investments in our raw material segment and will continue to utilize our unmatched global supply chain to optimize our raw material costs.

We are committed to executing on the opportunities we see ahead to reward Nucor shareholders with very attractive long-term returns on their valuable capital invested in our company. Nucor is the only steel producer in North America with the extremely important competitive advantage of an investment-grade credit rating. Our industry-leading financial strength allows us to support investments in our facilities that will prepare us for increased profitability as we enter into more favorable market conditions. In 2015, as we have in our past, we will allocate capital to investments that build our long-term earnings power. Capital expenditures are currently projected to be approximately $500 million in 2015, approximating our spend in 2014 but significantly lower than in 2013. This decrease is mainly due to the joint agreement with Encana to suspend drilling new natural gas wells through the end of 2015. Included in this $500 million total are primarily investments in our core operations to expand our product offerings and keep them state-of-the-art and globally competitive.

CRITICAL ACCOUNTING POLICIES AND ESTIMATES

Our discussion and analysis of our financial condition and results of operations are based upon our consolidated financial statements, which have been prepared in accordance with accounting principles generally accepted in the United States of America. The preparation of these financial statements requires us to make estimates and assumptions that affect the reported amounts of assets and liabilities, the disclosure of contingent assets and liabilities at year end and the reported amount of revenues and expenses during the year. On an ongoing basis, we evaluate our estimates, including those related to the valuation allowances for receivables, the carrying value of non-current assets, reserves for environmental obligations and income taxes. Our estimates are based on historical experience and various other assumptions that we believe to be reasonable under the circumstances, the results of which form the basis for making judgments about the carrying values of assets and liabilities that are not readily apparent from other sources. Accordingly, actual costs could differ materially from these estimates under different assumptions or conditions. We believe the following critical accounting policies affect our significant judgments and estimates used in the preparation of our consolidated financial statements.

      37      

ALLOWANCES FOR DOUBTFUL ACCOUNTS

We maintain allowances for doubtful accounts for estimated losses resulting from the inability of our customers to make required payments. If the financial condition of our customers were to deteriorate, resulting in an impairment of their ability to make payments, additional allowances may be required.

INVENTORIES

Inventories are stated at the lower of cost or market. All inventories held by the parent company and Nucor-Yamato Steel Company are valued using the LIFO method of accounting except for supplies that are consumed indirectly in the production process, which are valued using the first-in, first-out (FIFO) method of accounting. All inventories held by the parent company’s other subsidiaries are valued using the FIFO method of accounting. The Company records any amount required to reduce the carrying value of inventory to net realizable value as a charge to cost of products sold.

If steel selling prices were to decline in future quarters, write-downs of inventory could result. Specifically, the valuation of raw material inventories purchased during periods of peak market pricing held by subsidiaries valued using the FIFO method of accounting would most likely be impacted. Low utilization rates at our steel mills or raw materials facilities could hinder our ability to work through high-priced scrap and scrap substitutes (particularly pig iron and iron ore), leading to period-end exposure when comparing carrying value to net realizable value.

LONG-LIVED ASSET IMPAIRMENTS

We evaluate our property, plant and equipment and finite-lived intangible assets for potential impairment on an individual asset basis or at the lowest level asset grouping for which cash flows can be separately identified. Asset impairments are assessed whenever circumstances indicate that the carrying amounts of those productive assets could exceed their projected undiscounted cash flows. In developing estimated values for assets that we currently use in our operations, we utilize judgments and assumptions of future undiscounted cash flows that the assets will produce. When it is determined that an impairment exists, the related assets are written down to estimated fair market value.

Certain long-lived asset groupings were tested for impairment during the fourth quarter of 2014. Undiscounted cash flows for each asset grouping were estimated using management’s long-range estimates of market conditions associated with each asset grouping over the estimated useful life of the principal asset within the group. Our undiscounted cash flow analysis indicated that those long-lived asset groupings were recoverable as of December 31, 2014; however, if our projected cash flows are not realized, either because of an extended recessionary period or other unforeseen events, impairment charges may be required in future periods. A 5% decrease in the projected cash flows of each of our asset groupings would not result in an impairment.

GOODWILL

Goodwill is tested annually for impairment and whenever events or circumstances change that would make it more likely than not that an impairment may have occurred. We perform our annual impairment analysis as of the first day of the fourth quarter each year. The evaluation of impairment involves comparing the current estimated fair value of each reporting unit to the recorded value, including goodwill.

When appropriate, Nucor performs a qualitative assessment to determine whether it is more likely than not that the fair value of a reporting unit is less than its carrying amount. For certain reporting units it is necessary to perform a quantitative analysis. In these instances, a discounted cash flow model is used to determine the current estimated fair value of these reporting units. Key assumptions used to determine the fair value of each reporting unit as part of our annual testing (and any required interim testing) include: (a) expected cash flow for the five-year period following the testing date (including market share, sales volumes and prices, costs to produce and estimated capital needs); (b) an estimated terminal value using a terminal year growth rate determined based on the growth prospects of the reporting unit; (c) a discount rate based on management’s best estimate of the after-tax weighted average cost of capital; and (d) a probability-weighted scenario approach by which varying cash flows are assigned to certain scenarios based on the likelihood of occurrence. Management considers historical and anticipated future results, general economic and market conditions, the impact of planned business and operational strategies and all available information at the time the fair values of its reporting units are estimated.

Our fourth quarter 2014 annual goodwill impairment analysis did not result in an impairment charge. And, management does not believe that future impairment of these reporting units is probable. However, the performance of certain businesses that comprise our reporting units requires continued improvement. An increase of approximately 50 basis points in the discount rate, a critical assumption in which a minor change can have a significant impact on the estimated fair value, would not result in an impairment charge.

      38      

Nucor will continue to monitor operating results within all reporting units throughout the upcoming year in an effort to determine if events and circumstances warrant further interim impairment testing. Otherwise, all reporting units will again be subject to the required annual impairment test during our fourth quarter of 2015. Changes in the judgments and estimates underlying our analysis of goodwill for possible impairment, including expected future operating cash flows and discount rate, could decrease the estimated fair value of our reporting units in the future and could result in an impairment of goodwill.

EQUITY METHOD INVESTMENTS

Investments in joint ventures in which Nucor shares control over the financial and operating decisions but in which Nucor is not the primary beneficiary are accounted for under the equity method. Each of the Company’s equity method investments is subject to a review for impairment if, and when, circumstances indicate that an other-than-temporary decline in value below its carrying amount may have occurred. Examples of such circumstances include, but are not limited to, a significant deterioration in the earnings performance or business prospects of the investee; a significant adverse change in the regulatory, tax, economic or technological environment of the investee; a significant adverse change in the general market condition of either the geographic area or the industry in which the investee operates; and recurring negative cash flows from operations. If management considers the decline to be other than temporary, the Company would write down the investment to its estimated fair market value. An other-than-temporary decline in carrying value is determined to have occurred when, in management’s judgment, a decline in fair value below carrying value is of such length of time and/or severity that it is considered permanent.

In the event that an impairment review is necessary, we calculate the estimated fair value of our equity method investments using a probability-weighted multiple scenario income approach. Management’s analysis includes three discounted cash flow scenarios (best case, base case and recessionary case), which contain forecasted near-term cash flows under each scenario. Generally, (i) the best case scenario contains estimates of future results ranging from slightly higher than recent operating performance to levels that are consistent with historical operating and financial performance (i.e., results experienced prior to the onset of the recessionary period that began in 2008); (ii) the base case scenario has estimates of future results ranging from generally in line with recent operating performance to levels that are more conservative than historical operating and financial performance; and (iii) the worst case scenario has estimates of future results which include limited growth resulting only from operational cost improvements and limited benefits of new higher-value product offerings. Management determines the probability that each cash flow scenario will come to fruition based on the specific facts and circumstances of each of the preceding scenarios, with the base case typically receiving the majority of the weighting.

Key assumptions used to determine the fair value of our equity method investments include: (a) expected cash flow for the five-year period following the testing date (including market share, sales volumes and prices, costs to produce and estimated capital needs); (b) an estimated terminal value using a terminal year growth rate determined based on the growth prospects of the reporting unit; (c) a discount rate based on management’s best estimate of the after-tax weighted average cost of capital; and (d) a probability-weighted scenario approach by which varying cash flows are assigned to certain scenarios based on the likelihood of occurrence. While the assumptions that most significantly affect the fair value determination include projected revenues and discount rate, the assumptions are often interdependent and no single factor predominates in determining the estimated fair value. Management considers historical and anticipated future results, general economic and market conditions, the impact of planned business and operational strategies and all available information at the time the fair values of its investments are estimated. Those estimates and judgments may or may not ultimately prove appropriate.

In the second quarter of 2012, Nucor concluded that a triggering event occurred requiring assessment for impairment of its equity investment in Duferdofin Nucor due to the continued declines in the global demand for steel, the escalated economic and political turmoil in Europe and continued operating performance well below budgeted levels through the first half of 2012. Duferdofin Nucor’s updated unfavorable forecast of future operating performance was also a contributing factor. After completing its assessment, Nucor determined that the carrying amount exceeded its estimated fair value and recorded a $30.0 million impairment charge against the Company’s investment in Duferdofin Nucor in the second quarter of 2012. This charge is included in impairment of non-current assets in the consolidated statements of earnings.

Although there have been no significant deteriorations in near-term financial projections or other key assumptions since the last impairment test performed in the fourth quarter of 2013, Nucor concluded that it was appropriate to reassess its equity investment in Duferdofin Nucor for impairment during the fourth quarter of 2014 due to the protracted challenging steel market conditions in Europe. The updated analysis included expected future cash flow assumptions that were developed by local management at Duferdofin Nucor and were reviewed in detail by Nucor senior management using the methodology outlined above. The base case scenario received the majority of the probability weighting, with equal weighting given to the other two scenarios. After completing its assessment, the Company determined that the estimated fair value exceeded its carrying amount by a sufficient amount and that there was no need for additional impairment charges.

      39      

It is reasonably possible that based on actual future performance the estimates used in our fourth quarter valuation could change and result in further impairment of our investment. Changes in management estimates to the unobservable inputs would change the valuation of the investment. The estimates for the projected revenue, metal margin and discount rate are the assumptions that most significantly affect the fair value determination.

ENVIRONMENTAL REMEDIATION

We are subject to environmental laws and regulations established by federal, state and local authorities, and we make provisions for the estimated costs related to compliance. Undiscounted remediation liabilities are accrued based on estimates of known environmental exposures. The accruals are reviewed periodically and, as investigations and remediation proceed, adjustments are made as we believe are necessary. Our measurement of environmental liabilities is based on currently available facts, present laws and regulations and current technology.

INCOME TAXES

We utilize the liability method of accounting for income taxes. Under the liability method, deferred taxes are determined based on the temporary differences between the financial statement and tax basis of assets and liabilities using tax rates expected to be in effect during the years in which the basis differences reverse. A valuation allowance is recorded when it is more likely than not that some of the deferred tax assets will not be realized. We recognize the effect of income tax positions only if those positions are more likely than not of being sustained. Potential accrued interest and penalties related to unrecognized tax benefits within operations are recognized as a component of interest expense.

RECENT ACCOUNTING PRONOUNCEMENTS

See Note 2 to our consolidated financial statements for a discussion of new accounting pronouncements adopted by Nucor during 2014 and the expected financial impact of accounting pronouncements recently issued or proposed but not yet required to be adopted.

RECLASSIFICATIONS

In the first quarter of 2013, we began reporting the results of Nucor’s steel trading businesses and rebar distribution businesses in the steel mills segment. Previously these businesses were reported in an “All Other” category. These businesses were reclassified to the steel mills segment as part of a realignment of Nucor’s reportable segments to better reflect the way in which they are managed. The segment data for the comparable periods has also been reclassified into the steel mills segment in order to conform to the current year presentation. The steel mills, steel products and raw materials segments are consistent with the way Nucor manages its business, which is primarily based upon the similarity of the types of products produced and sold by each segment. Additionally, the composition of assets by segment at December 31, 2012 was reclassified to conform with the current presentation. This reclassification between segments did not have any impact on the consolidated asset balances.

  FIVE-YEAR FINANCIAL REVIEW               43        

	(dollar and share amounts in thousands, except per share data)
	2014			2013			2012		2011		2010
FOR THE YEAR
Net sales	$	21,105,141		$	19,052,046		$	19,429,273	$	20,023,564	$	15,844,627
Costs, expenses and other:
Cost of products sold		19,198,615			17,641,421			17,915,735		18,142,144		15,060,882
Marketing, administrative and other expenses		546,198			481,904			454,900		439,528		331,455
Equity in (earnings) losses of unconsolidated affiliates		(13,505	)		(9,297	)		13,323		10,043		32,082
Impairment of non-current assets		—			—			30,000		13,943		—
Interest expense, net		169,256			146,895			162,375		166,094		153,093
		19,900,564			18,260,923			18,576,333		18,771,752		15,577,512
Earnings before income taxes and noncontrolling interests		1,204,577			791,123			852,940		1,251,812		267,115
Provision for income taxes		388,787			205,594			259,814		390,828		60,792
Net earnings		815,790			585,529			593,126		860,984		206,323
Earnings attributable to noncontrolling interests		101,844			97,504			88,507		82,796		72,231
Net earnings attributable to Nucor stockholders		713,946			488,025			504,619		778,188		134,092
Net earnings per share:
Basic		2.22			1.52			1.58		2.45		0.42
Diluted		2.22			1.52			1.58		2.45		0.42
Dividends declared per share		1.4825			1.4725			1.4625		1.4525		1.4425
Percentage of net earnings to net sales		3.4%			2.6%			2.6%		3.9%		0.8%
.Return on average stockholders’ equity		9.3%			6.4%			6.7%		10.7%		1.8%
Capital expenditures		568,867			1,230,418			1,019,334		450,627		345,294
Acquisitions (net of cash acquired)		768,581			—			760,833		3,959		64,788
Depreciation		652,000			535,852			534,010		522,571		512,147
Sales per employee		921			859			906		974		777
AT YEAR END
Current assets	$	6,441,888		$	6,410,046		$	5,661,364	$	6,708,081	$	5,861,175
Current liabilities		2,097,776			1,960,216			2,029,568		2,396,059		1,504,438
Working capital		4,344,112			4,449,830			3,631,796		4,312,022		4,356,737
Cash provided by operating activities		1,342,898			1,077,949			1,200,385		1,031,053		866,794
Current ratio		3.1			3.3			2.8		2.8		3.9
Property, plant and equipment, net		5,287,639			4,917,024			4,283,056		3,755,604		3,852,118
Total assets		15,615,927			15,203,283			14,152,059		14,570,350		13,921,910
Long-term debt (including current maturities)		4,376,935			4,380,200			3,630,200		4,280,200		4,280,200
Percentage of debt to capital(1)		35.2%			35.6%			31.5%		35.7%		36.9%
Total Nucor stockholders’ equity		7,772,470			7,645,769			7,641,571		7,474,885		7,120,070
Per share		24.36			24.02			24.06		23.60		22.55
Shares outstanding		319,033			318,328			317,663		316,749		315,791
Employees		23,600			22,300			22,200		20,800		20,500

(1) Long-term debt divided by total equity plus long-term debt.

        44               MANAGEMENT’S REPORT  

MANAGEMENT’S REPORTon internal control over financial reporting

Nucor’s management is responsible for establishing and maintaining adequate internal control over financial reporting, as such term is defined in Exchange Act Rules 13a-15(f) and 15d-15(f) under the Securities Exchange Act of 1934, as amended.

Because of its inherent limitations, internal control over financial reporting may not prevent or detect misstatements. Also, projections of any evaluation of effectiveness to future periods are subject to the risk that controls may become inadequate because of changes in conditions, or that the degree of compliance with the policies or procedures may deteriorate.

Management assessed the effectiveness of Nucor’s internal control over financial reporting as of December 31, 2014. In making this assessment, management used criteria set forth by the Committee of Sponsoring Organizations of the Treadway Commission (COSO) in Internal Control – Integrated Framework (2013).

Our evaluation did not include the internal controls over financial reporting of Gallatin Steel Company, which was acquired on October 8, 2014. Total assets and total sales for the acquisition represent approximately 4.2% and 1.1%, respectively, of the related consolidated financial statement amounts as of and for the fiscal year ended December 31, 2014.

Based on its assessment, management concluded that Nucor’s internal control over financial reporting was effective as of December 31, 2014. PricewaterhouseCoopers LLP, an independent registered public accounting firm, has audited the effectiveness of Nucor’s internal control over financial reporting as of December 31, 2014 as stated in their report which is included herein.

  REPORT OF INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM               45        

REPORTOF INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM

To the Stockholders and Board of Directors

Nucor Corporation:

In our opinion, the accompanying consolidated balance sheets and the related consolidated statements of earnings, comprehensive income, stockholders’ equity and cash flows present fairly, in all material respects, the financial position of Nucor Corporation and its subsidiaries at December 31, 2014 and 2013, and the results of their operations and their cash flows for each of the three years in the period ended December 31, 2014 in conformity with accounting principles generally accepted in the United States of America. Also in our opinion, the Company maintained, in all material respects, effective internal control over financial reporting as of December 31, 2014, based on criteria established in Internal Control – Integrated Framework (2013) issued by the Committee of Sponsoring Organizations of the Treadway Commission (COSO). The Company’s management is responsible for these financial statements, for maintaining effective internal control over financial reporting and for its assessment of the effectiveness of internal control over financial reporting, included in the accompanying Management’s Report on Internal Control Over Financial Reporting. Our responsibility is to express opinions on these financial statements and on the Company’s internal control over financial reporting based on our integrated audits. We conducted our audits in accordance with the standards of the Public Company Accounting Oversight Board (United States). Those standards require that we plan and perform the audits to obtain reasonable assurance about whether the financial statements are free of material misstatement and whether effective internal control over financial reporting was maintained in all material respects. Our audits of the financial statements included examining, on a test basis, evidence supporting the amounts and disclosures in the financial statements, assessing the accounting principles used and significant estimates made by management, and evaluating the overall financial statement presentation. Our audit of internal control over financial reporting included obtaining an understanding of internal control over financial reporting, assessing the risk that a material weakness exists, and testing and evaluating the design and operating effectiveness of internal control based on the assessed risk. Our audits also included performing such other procedures as we considered necessary in the circumstances. We believe that our audits provide a reasonable basis for our opinions.

A company’s internal control over financial reporting is a process designed to provide reasonable assurance regarding the reliability of financial reporting and the preparation of financial statements for external purposes in accordance with generally accepted accounting principles. A company’s internal control over financial reporting includes those policies and procedures that (i) pertain to the maintenance of records that, in reasonable detail, accurately and fairly reflect the transactions and dispositions of the assets of the company; (ii) provide reasonable assurance that transactions are recorded as necessary to permit preparation of financial statements in accordance with generally accepted accounting principles, and that receipts and expenditures of the company are being made only in accordance with authorizations of management and directors of the company; and (iii) provide reasonable assurance regarding prevention or timely detection of unauthorized acquisition, use or disposition of the company’s assets that could have a material effect on the financial statements.

Because of its inherent limitations, internal control over financial reporting may not prevent or detect misstatements. Also, projections of any evaluation of effectiveness to future periods are subject to the risk that controls may become inadequate because of changes in conditions, or that the degree of compliance with the policies or procedures may deteriorate.

As described in Management’s Report on Internal Control Over Financial Reporting, management has excluded Gallatin Steel Company from its assessment of internal control over financial reporting as of December 31, 2014 because it was acquired by the Company in a purchase business combination during 2014. We have also excluded Gallatin Steel Company from our audit of internal control over financial reporting. Gallatin Steel Company is a wholly owned subsidiary whose total assets and total sales represent approximately 4.2% and 1.1%, respectively, of the related consolidated financial statement amounts as of and for the year ended December 31, 2014.

PricewaterhouseCoopers LLP

Charlotte, NC

February 27, 2015

        46               CONSOLIDATED BALANCE SHEETS  

CONSOLIDATED BALANCE SHEETS				(in thousands)
December 31,	2014			2013
ASSETS
CURRENT ASSETS:
Cash and cash equivalents (Note 15)	$	1,024,144		$	1,483,252
Short-term investments (Notes 4 and 15)		100,000			28,191
Accounts receivable, net (Note 5)		2,068,298			1,810,987
Inventories, net (Note 6)		2,745,032			2,605,609
Other current assets (Notes 10, 14 and 20)		504,414			482,007
Total current assets		6,441,888			6,410,046
PROPERTY, PLANT AND EQUIPMENT, NET (Note 7)		5,287,639			4,917,024
GOODWILL (Note 9)		2,068,664			1,973,608
OTHER INTANGIBLE ASSETS, NET (Note 9)		862,093			874,154
OTHER ASSETS (Note 10)		955,643			1,028,451
TOTAL ASSETS	$	15,615,927		$	15,203,283
LIABILITIES AND EQUITY
CURRENT LIABILITIES:
Short-term debt (Notes 12 and 15)	$	207,476		$	29,202
Long-term debt due within one year (Notes 12 and 15)		16,335			3,300
Accounts payable (Note 11)		993,872			1,117,078
Salaries, wages and related accruals (Note 18)		352,488			282,860
Accrued expenses and other current liabilities (Notes 11, 14, 16 and 20)		527,605			527,776
Total current liabilities		2,097,776			1,960,216
LONG-TERM DEBT DUE AFTER ONE YEAR (Notes 12 and 15)		4,360,600			4,376,900
DEFERRED CREDITS AND OTHER LIABILITIES (Notes 14, 16, 18 and 20)		1,082,433			955,889
TOTAL LIABILITIES		7,540,809			7,293,005
COMMITMENTS AND CONTINGENCIES (Notes 14 and 16)
EQUITY
NUCOR STOCKHOLDERS’ EQUITY (Notes 13 and 17):
Common stock (800,000 shares authorized; 378,092 and 377,525 shares issued, respectively)		151,237			151,010
Additional paid-in capital		1,883,356			1,843,353
Retained earnings		7,378,214			7,140,440
Accumulated other comprehensive (loss) income, net of income taxes (Notes 2, 14 and 21)		(145,708	)		9,080
Treasury stock (59,059 and 59,197 shares, respectively)		(1,494,629	)		(1,498,114	)
Total Nucor stockholders’ equity		7,772,470			7,645,769
NONCONTROLLING INTERESTS		302,648			264,509
TOTAL EQUITY		8,075,118			7,910,278
TOTAL LIABILITIES AND EQUITY	$	15,615,927		$	15,203,283

See notes to consolidated financial statements.

  CONSOLIDATED STATEMENTS OF EARNINGS               47        

CONSOLIDATED STATEMENTS OF EARNINGS	(in thousands, except per share data)
Year Ended December 31,	2014			2013			2012
NET SALES	$	21,105,141		$	19,052,046		$	19,429,273
COSTS, EXPENSES AND OTHER:
Cost of products sold (Notes 6, 14 and 18)		19,198,615			17,641,421			17,915,735
Marketing, administrative and other expenses (Notes 3 and 7)		546,198			481,904			454,900
Equity in (earnings) losses of unconsolidated affiliates (Note 10)		(13,505	)		(9,297	)		13,323
Impairment of non-current assets (Note 10)		—			—			30,000
Interest expense, net (Notes 7, 19 and 20)		169,256			146,895			162,375
		19,900,564			18,260,923			18,576,333
EARNINGS BEFORE INCOME TAXES AND NONCONTROLLING INTERESTS		1,204,577			791,123			852,940
PROVISION FOR INCOME TAXES (Note 20)		388,787			205,594			259,814
NET EARNINGS		815,790			585,529			593,126
EARNINGS ATTRIBUTABLE TO NONCONTROLLING INTERESTS		101,844			97,504			88,507
NET EARNINGS ATTRIBUTABLE TO NUCOR STOCKHOLDERS	$	713,946		$	488,025		$	504,619
NET EARNINGS PER SHARE (Note 22):
Basic	$	2.22		$	1.52		$	1.58
Diluted	$	2.22		$	1.52		$	1.58

See notes to consolidated financial statements.

        48               CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME  

CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME				(in thousands)
Year Ended December 31,	2014			2013			2012
NET EARNINGS	$	815,790		$	585,529		$	593,126
OTHER COMPREHENSIVE (LOSS) INCOME:
Net unrealized loss on hedging derivatives, net of income taxes of ($4,900), $0 and ($1,100)     for 2014, 2013 and 2012, respectively		(8,542	)		—			(2,264	)
Reclassification adjustment for loss on settlement of hedging derivatives included in net earnings,     net of income taxes of $200, $0 and $25,000       for 2014, 2013 and 2012, respectively		542			—			42,515
Foreign currency translation (loss) gain, net of income taxes of $400, ($600) and $0     for 2014, 2013 and 2012, respectively		(141,530	)		(53,619	)		58,626
Adjustment to early retiree medical plan, net of income taxes of ($1,921), $2,547 and ($1,528)     for 2014, 2013 and 2012, respectively		(4,228	)		5,938			(3,646	)
Reclassification adjustment for gain on early retiree medical plan included in net earnings,     net of income taxes of ($557), $0 and $0       for 2014, 2013 and 2012, respectively		(1,030	)		—			—
		(154,788	)		(47,681	)		95,231
COMPREHENSIVE INCOME		661,002			537,848			688,357
COMPREHENSIVE INCOME ATTRIBUTABLE TO NONCONTROLLING INTERESTS		(101,844	)		(97,504	)		(88,512	)
COMPREHENSIVE INCOME ATTRIBUTABLE TO NUCOR STOCKHOLDERS	$	559,158		$	440,344		$	599,845

See notes to consolidated financial statements.

  CONSOLIDATED STATEMENTS OF STOCKHOLDERS’ EQUITY               49        

CONSOLIDATED STATEMENTS OF STOCKHOLDERS’ EQUITY								(in thousands, except per share data)
		COMMON STOCK		ADDITIONAL PAID-IN	RETAINED	ACCUMULATED OTHER COMPREHENSIVE	TREASURY STOCK (AT COST)		TOTAL NUCOR STOCKHOLDERS’	NON-   CONTROLLING
	TOTAL	SHARES	AMOUNT	CAPITAL	EARNINGS	INCOME (LOSS)	SHARES	AMOUNT	EQUITY	INTERESTS
BALANCES, December 31, 2011	$7,706,580	376,239	$150,496	$1,756,534	$7,111,566	($  38,177)	59,490	($1,505,534)	$7,474,885	$231,695
Net earnings in 2012	593,126				504,619				504,619	88,507
Other comprehensive income (loss)	95,231					95,226			95,226	5
Stock options exercised	10,515	354	142	10,373					10,515
Stock option expense	9,850			9,850					9,850
Issuance of stock under award plans, net of forfeitures	36,119	420	167	32,395			(140)	3,557	36,119
Amortization of unearned compensation	800			800					800
Cash dividends ($1.4625 per share)	(467,662)				(467,662)				(467,662)
Distributions to noncontrolling interests	(74,848)									(74,848)
Other	(24,337)			1,507	(24,000)	(288)			(22,781)	(1,556)
BALANCES, December 31, 2012	7,885,374	377,013	150,805	1,811,459	7,124,523	56,761	59,350	(1,501,977)	7,641,571	243,803
Net earnings in 2013	585,529				488,025				488,025	97,504
Other comprehensive income (loss)	(47,681)					(47,681)			(47,681)
Stock option expense	8,576			8,576					8,576
Issuance of stock under award plans, net of forfeitures	26,565	512	205	22,497			(153)	3,863	26,565
Amortization of unearned compensation	821			821					821
Cash dividends ($1.4725 per share)	(472,108)				(472,108)				(472,108)
Distributions to noncontrolling interests	(76,798)									(76,798)
BALANCES, December 31, 2013	7,910,278	377,525	151,010	1,843,353	7,140,440	9,080	59,197	(1,498,114)	7,645,769	264,509
Net earnings in 2014	815,790				713,946				713,946	101,844
Other comprehensive income (loss)	(154,788)					(154,788)			(154,788)
Stock options exercised	5,614	136	54	5,560					5,614
Stock option expense	7,716			7,716					7,716
Issuance of stock under award plans, net of forfeitures	29,667	431	173	26,009			(138)	3,485	29,667
Amortization of unearned compensation	718			718					718
Cash dividends ($1.4825 per share)	(476,172)				(476,172)				(476,172)
Distributions to noncontrolling interests	(63,705)									(63,705)
BALANCES, December 31, 2014	$8,075,118	378,092	$151,237	$1,883,356	$7,378,214	($145,708)	59,059	($1,494,629)	$7,772,470	$302,648

See notes to consolidated financial statements.

        50               CONSOLIDATED STATEMENTS OF CASH FLOWS  

CONSOLIDATED STATEMENTS OF CASH FLOWS	(in thousands)
Year Ended December 31,	2014			2013			2012
OPERATING ACTIVITIES:
Net earnings	$	815,790		$	585,529		$	593,126
Adjustments:
Depreciation		652,000			535,852			534,010
Amortization		72,423			74,356			73,011
Stock-based compensation		46,384			47,450			50,733
Deferred income taxes		90,864			56,564			(25,274	)
Distributions from affiliates		53,738			8,708			—
Equity in (earnings) losses of unconsolidated affiliates		(13,505	)		(9,297	)		13,323
Impairment of non-current assets		—			—			30,000
Loss on assets		25,393			14,000			17,563
Changes in assets and liabilities (exclusive of acquisitions and dispositions):
Accounts receivable		(179,181	)		(103,649	)		148,113
Inventories		(45,963	)		(298,074	)		(65,655	)
Accounts payable		(111,859	)		39,489			(111,496	)
Federal income taxes		(111,687	)		77,950			(28,022	)
Salaries, wages and related accruals		67,973			7,155			(60,363	)
Other operating activities		(19,472	)		41,916			31,316
Cash provided by operating activities		1,342,898			1,077,949			1,200,385
INVESTING ACTIVITIES:
Capital expenditures		(667,982	)		(1,196,952	)		(947,608	)
Investment in and advances to affiliates		(97,841	)		(85,053	)		(180,472	)
Repayment of advances to affiliates		122,000			54,500			65,446
Disposition of plant and equipment		36,563			34,097			51,063
Acquisitions (net of cash acquired)		(768,581	)		—			(760,833	)
Purchases of investments		(100,000	)		(19,349	)		(409,403	)
Proceeds from the sale of investments		27,529			92,761			1,667,142
Proceeds from the sale of restricted investments		—			148,725			359,295
Changes in restricted cash		—			126,438			(48,625	)
Other investing activities		10,250			4,863			—
Cash used in investing activities		(1,438,062	)		(839,970	)		(203,995	)
FINANCING ACTIVITIES:
Net change in short-term debt		178,308			(671	)		27,945
Repayment of long-term debt		(5,358	)		(250,000	)		(650,000	)
Proceeds from issuance of long-term debt, net of discount		—			999,100			—
Bond issuance costs		—			(7,625	)		—
Issuance of common stock		5,614			—			10,515
Excess tax benefits from stock-based compensation		3,400			2,955			4,700
Distributions to noncontrolling interests		(63,705	)		(76,798	)		(74,848	)
Cash dividends		(475,123	)		(471,028	)		(466,361	)
Other financing activities		(2,183	)		111			1,172
Cash (used in) provided by financing activities		(359,047	)		196,044			(1,146,877	)
Effect of exchange rate changes on cash		(4,897	)		(3,633	)		2,704
(DECREASE) INCREASE IN CASH AND CASH EQUIVALENTS		(459,108	)		430,390			(147,783	)
CASH AND CASH EQUIVALENTS — BEGINNING OF YEAR		1,483,252			1,052,862			1,200,645
CASH AND CASH EQUIVALENTS — END OF YEAR	$	1,024,144		$	1,483,252		$	1,052,862
NON-CASH INVESTING ACTIVITY:
Change in accrued plant and equipment purchases	$	(99,115	)	$	33,467		$	71,726

See notes to consolidated financial statements.

  NOTES TO CONSOLIDATED FINANCIAL STATEMENTS               51        

YEARS ENDED DECEMBER 31, 2014, 2013 AND 2012

1. NATURE OF OPERATIONS AND BASIS OF PRESENTATION

Nature of Operations Nucor is principally a manufacturer of steel and steel products, as well as a scrap broker and processor, with operating facilities and customers primarily located in North America.

Principles of Consolidation The consolidated financial statements include Nucor and its controlled subsidiaries, including Nucor-Yamato Steel Company, a limited partnership of which Nucor owns 51%. All significant intercompany transactions are eliminated.

Distributions are made to noncontrolling interest partners in Nucor-Yamato Steel Company in accordance with the limited partnership agreement by mutual agreement of the general partners. At a minimum, sufficient cash is distributed so that each partner may pay their U.S. federal and state income taxes.

Use of Estimates The preparation of financial statements in conformity with generally accepted accounting principles 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 these estimates.

Reclassifications In the first quarter of 2013, we began reporting the results of Nucor’s steel trading businesses and rebar distribution businesses in the steel mills segment. Previously, these businesses were reported in an “All Other” category. These businesses were reclassified to the steel mills segment as part of a realignment of Nucor’s reportable segments to better reflect the way in which they are managed. The segment data for the comparable periods has also been reclassified into the steel mills segment in order to conform to the current year presentation. The steel mills, steel products and raw materials segments are consistent with the way Nucor manages its business, which is based primarily upon the similarity of the types of products produced and sold by each segment. Additionally, the composition of assets by segment at December 31, 2012, was reclassified to conform with the current presentation. This reclassification between segments did not have any impact on the consolidated asset balances.

2. SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES

Cash and Cash Equivalents Cash equivalents are recorded at cost plus accrued interest, which approximates fair value, and have original maturities of three months or less at the date of purchase. Cash and cash equivalents are maintained primarily with a few high-credit quality financial institutions.

Short-term Investments Short-term investments are recorded at cost plus accrued interest, which approximates fair value. Unrealized gains and losses on investments classified as available-for-sale are recorded as a component of accumulated other comprehensive income (loss). Management determines the appropriate classification of its investments at the time of purchase and re-evaluates such determination at each balance sheet date.

Inventories Valuation Inventories are stated at the lower of cost or market. Inventories valued using the last-in, first-out (LIFO) method of accounting represent approximately 43% of total inventories as of December 31, 2014 (45% as of December 31, 2013). All inventories held by the parent company and Nucor-Yamato Steel Company are valued using the LIFO method of accounting except for supplies that are consumed indirectly in the production process, which are valued using the first-in, first-out (FIFO) method of accounting. All inventories held by other subsidiaries of the parent company are valued using the FIFO method of accounting. The Company records any amount required to reduce the carrying value of inventory to net realizable value as a charge to cost of products sold.

Property, Plant and Equipment Property, plant and equipment are stated at cost, except for property, plant and equipment acquired through acquisitions which are recorded at acquisition date fair value. With the exception of our natural gas wells, depreciation is provided on a straight-line basis over the estimated useful lives of the assets. Depletion of all capitalized costs associated with our natural gas producing properties is expensed on a unit-of-production basis by individual field as the gas from the proved developed reserves is produced. The costs of planned major maintenance activities are capitalized as part of other current assets and amortized over the period until the next scheduled major maintenance activity. All other repairs and maintenance activities are expensed when incurred.

Goodwill and Other Intangibles Goodwill is the excess of cost over the fair value of net assets of businesses acquired. Goodwill is not amortized but is tested annually for impairment and whenever events or circumstances change that would make it more likely than not that an impairment may have occurred. We perform our annual impairment analysis as of the first day of the fourth quarter each year. The evaluation of impairment involves comparing the current estimated fair value of each reporting unit, which is a level below the reportable segment, to the recorded value, including goodwill. When appropriate, Nucor performs a qualitative assessment to determine whether it is more likely than not that the fair value of a reporting unit is less than its carrying amount. For certain reporting units it is necessary to perform a quantitative analysis. In these instances, a discounted cash flow model is used to determine the current estimated fair value of these reporting units. A number of significant assumptions and estimates are involved in the application

      52      

of the discounted cash flow model to forecast operating cash flows, including market growth and market share, sales volumes and prices, costs to produce, discount rate and estimated capital needs. Management considers historical experience and all available information at the time the fair values of its reporting units are estimated. Assumptions in estimating future cash flows are subject to a high degree of judgment and complexity. Changes in assumptions and estimates may affect the fair value of goodwill and could result in impairment charges in future periods.

Finite-lived intangible assets are amortized over their estimated useful lives.

Long-Lived Asset Impairments We evaluate our property, plant and equipment and finite-lived intangible assets for potential impairment on an individual asset basis or at the lowest level asset grouping for which cash flows can be separately identified. Asset impairments are assessed whenever circumstances indicate that the carrying amounts of those productive assets could exceed their projected undiscounted cash flows. When it is determined that impairment exists, the related assets are written down to estimated fair market value.

Equity Method Investments Investments in joint ventures in which Nucor shares control over the financial and operating decisions but in which Nucor is not the primary beneficiary are accounted for under the equity method. Each of the Company’s equity method investments is subject to a review for impairment if, and when, circumstances indicate that a decline in value below its carrying amount may have occurred. Examples of such circumstances include, but are not limited to, a significant deterioration in the earnings performance or business prospects of the investee; a significant adverse change in the regulatory, economic or technological environment of the investee; a significant adverse change in the general market condition of either the geographic area or the industry in which the investee operates; and recurring negative cash flows from operations. If management considers the decline to be other than temporary, the Company would write down the investment to its estimated fair market value.

Derivative Financial Instruments Nucor uses derivative financial instruments from time to time primarily to partially manage its exposure to price risk related to natural gas purchases used in the production process and to changes in interest rates on outstanding debt instruments. Nucor also uses derivatives to hedge a portion of our scrap, copper and aluminum purchases and sales. In addition, Nucor uses forward foreign exchange contracts to hedge cash flows associated with certain assets and liabilities, firm commitments and anticipated transactions.

Nucor recognizes all material derivative instruments in the consolidated balance sheets at fair value. Amounts included in accumulated other comprehensive income (loss) related to cash flow hedges are reclassified into earnings when the underlying transaction is recognized in net earnings. Changes in fair value hedges are reported in earnings along with changes in the fair value of the hedged items. When cash flow and fair value hedges affect net earnings, they are included on the same financial statement line as the underlying transaction (cost of products sold or interest expense). If these instruments do not meet hedge accounting criteria or contain ineffectiveness, the change in fair value (or a portion thereof) is recognized immediately in earnings in the same financial statement line as the underlying transaction.

Revenue Recognition Nucor recognizes revenue when persuasive evidence of a contractual arrangement exists, delivery has occurred, the sales price is fixed or determinable and collection is reasonably assured. Product is considered delivered to the customer once it has been shipped and title and risk of loss has been transferred.

Income Taxes Nucor utilizes the liability method of accounting for income taxes. Under the liability method, deferred taxes are determined based on the temporary differences between the financial statement and tax basis of assets and liabilities using tax rates expected to be in effect during the years in which the basis differences reverse. A valuation allowance is recorded when it is more likely than not that some of the deferred tax assets will not be realized.

Nucor recognizes the effect of income tax positions only if those positions are more likely than not of being sustained. Potential accrued interest and penalties related to unrecognized tax benefits are recognized as a component of interest expense.

Nucor’s intention is to permanently reinvest the earnings of certain foreign investments. Accordingly, no provisions have been made for taxes that may be payable upon remittance of such earnings.

Stock-Based Compensation The Company recognizes the cost of stock-based compensation as an expense using fair value measurement methods. The assumptions used to calculate the fair value of stock-based compensation granted are evaluated and revised, as necessary, to reflect market conditions and experience.

      53      

Foreign Currency Translation For Nucor’s operations where the functional currency is other than the U.S. dollar, assets and liabilities have been translated at year-end exchange rates, and income and expenses translated using average exchange rates for the respective periods. Adjustments resulting from the process of translating an entity’s financial statements into the U.S. dollar have been recorded in accumulated other comprehensive income (loss) and are included in net earnings only upon sale or liquidation of the underlying investments. Foreign currency transaction gains and losses are included in net earnings in the period they occur.

Recently Adopted Accounting Pronouncements In the first quarter of 2014, Nucor adopted new accounting guidance, which requires unrecognized tax benefits to be presented as a decrease in net operating loss, similar tax loss or tax credit carryforward if certain criteria are met. Adoption of the guidance did not impact Nucor’s consolidated financial position, results of operations or cash flows.

In March 2013, new accounting guidance was issued on foreign currency matters that clarifies the guidance of a parent company’s accounting for the cumulative translation adjustment upon derecognition of certain subsidiaries or groups of assets within a foreign entity or of an investment in a foreign entity. Under this new standard, a parent company that ceases to have a controlling financial interest in a foreign subsidiary or group of assets within a foreign entity shall release any related cumulative translation adjustment into net income only if a sale or transfer results in complete or substantially complete liquidation of the foreign entity. This standard has been applied prospectively for the Company beginning January 1, 2014. The adoption of this standard did not have a material effect on the consolidated financial statements.

In February 2013, new accounting guidance was issued on joint and several liability arrangements for which the total amount of the obligation is fixed at the reporting date. Under this new standard, obligations resulting from joint and several liability arrangements are to be measured as the sum of: (a) the amount the reporting entity agreed with its co-obligors that it will pay and (b) any additional amount the reporting entity expects to pay on behalf of its co-obligors. This standard has been applied prospectively for the Company beginning January 1, 2014. The adoption of this standard did not have a material effect on the consolidated financial statements.

Recently Issued Accounting Pronouncements In April 2014, new accounting guidance was issued that changes the criteria for determining which disposals can be presented as discontinued operations and modifies related disclosure requirements. The new guidance is effective for annual and interim periods beginning after December 15, 2014. The impact on the Company of adopting the new guidance will depend on the nature, terms and size of business disposals completed after the effective date.

In May 2014, new accounting guidance was issued that will supersede nearly all existing accounting guidance related to revenue recognition. The new guidance provides that an entity recognizes revenue when it transfers promised goods or services to customers in an amount that reflects the consideration to which the entity expects to be entitled in exchange for those goods or services. This update also requires additional disclosure about the nature, amount, timing and uncertainty of revenue and cash flows arising from customer contracts, including significant judgments and changes in judgments, and assets recognized from costs incurred to obtain or fulfill a contract. The amendments are effective for the Company for all annual and interim reporting periods beginning after December 15, 2016. The Company is evaluating adoption methods and the impact it will have on the consolidated financial statements.

In August 2014, new accounting guidance was issued that specifies the responsibility that an entity’s management has to evaluate whether there is substantial doubt about the entity’s ability to continue as a going concern. The standard is effective for interim and annual periods beginning after December 15, 2016, and is not expected to have an effect on the Company’s financial statements.

      54      

3. ACQUISITIONS AND DISPOSITIONS

On October 8, 2014, Nucor acquired the entire equity interest in Gallatin Steel Company (Gallatin) for a cash purchase price of $779.1 million, including working capital adjustments. The acquisition was partially funded by the issuance of approximately $300 million of commercial paper with the remaining funds coming from cash on hand. Located on the Ohio River in Ghent, Kentucky, Gallatin has an annual sheet steel production capacity of approximately 1,800,000 tons. This acquisition is strategically important as it expands Nucor’s footprint in the Midwestern United States market, and it will broaden Nucor’s product offerings. Gallatin’s financial results are included as part of the steel mills segment (see Note 23).

We have allocated the purchase price for Gallatin to its individual assets acquired and liabilities assumed.

The following table summarizes the estimated fair values of the assets acquired and liabilities assumed of Gallatin as of the date of acquisition:

(in thousands)

Cash	$	48,957
Accounts receivable		82,291
Inventory		101,692
Other current assets		5,117
Property, plant and equipment		483,007
Goodwill		98,505
Other intangible assets		67,150
Other assets		2,762
Total assets acquired		889,481
Current liabilities		105,816
Long-term debt		2,093
Deferred credits and other liabilities		2,500
Total liabilities assumed		110,409
Net assets acquired	$	779,072

The purchase price allocation to the identifiable intangible assets is as follows:

As of the date of acquisition	(in thousands, except years)
				Weighted-          Average Life
Customer relationships		$	58,250		20 years
Trademarks and trade names			8,900		5 years
		$	67,150

The goodwill of $98.5 million is primarily attributed to the synergies expected to arise after the acquisition and has been allocated to the steel mills segment (see Note 9). Approximately $87.6 million of the goodwill recognized is expected to be deductible for tax purposes.

On June 20, 2012, Nucor completed the acquisition of the entire equity interest in Skyline Steel, LLC (Skyline) and its subsidiaries for the cash purchase price of $675.4 million. No cash was received nor was any debt assumed as a result of the acquisition. Skyline’s financial results are included as part of the steel mills segment (see Note 23).

Skyline is a steel foundation manufacturer and distributor serving the U.S., Canada, Mexico and the Caribbean. Skyline’s steel products are used in marine construction, bridge and highway construction, heavy civil construction, storm protection, underground commercial parking and environmental containment projects in the infrastructure and construction industries. Skyline is a significant consumer of H-piling and sheet piling from Nucor-Yamato Steel Company.

      55      

We allocated the purchase price for Skyline to its individual assets acquired and liabilities assumed.

The following table summarizes the estimated fair values of the assets acquired and liabilities assumed of Skyline as of the date of acquisition:

(in thousands)

Accounts receivable	$	128,004
Inventory		260,473
Other current assets		4,410
Property, plant and equipment		70,100
Goodwill		138,579
Other intangible assets		215,600
Total assets acquired		817,166
Current liabilities		137,654
Deferred credits and other liabilities		4,078
Total liabilities assumed		141,732
Net assets acquired	$	675,434

The purchase price allocation to the identifiable intangible assets is as follows:

As of the date of acquisition	(in thousands, except years)
				Weighted-          Average Life
Customer relationships		$	184,500		17 years
Trademarks and trade names			28,500		20 years
Other			2,600		3 years
		$	215,600

The goodwill of $138.6 million is primarily attributed to the synergies expected to arise after the acquisition and was allocated to the steel mills segment. Approximately $128.2 million of the goodwill recognized is expected to be deductible for tax purposes.

In August 2012, Nucor sold the assets of Nucor Wire Products Pennsylvania, Inc., resulting in a loss of $17.6 million. This charge is included in marketing, administrative and other expenses in the consolidated statement of earnings.

In November 2012, Nucor acquired a 50% economic and voting interest in Hunter Ridge Energy Services LLC (Hunter Ridge). Hunter Ridge provides services for the gathering, separation and compression of energy products including natural gas produced by Nucor’s working interest drilling program. Nucor accounts for the investment (on a one-month lag basis) under the equity method (see Note 10). As of December 31, 2014, Nucor’s investment in Hunter Ridge was $138.6 million ($134.5 million at December 31, 2013).

Other minor acquisitions, exclusive of purchase price adjustments of acquisitions made, totaled $38.5 million in 2014, none in 2013, and $85.4 million in 2012.

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4. SHORT-TERM INVESTMENTS

Nucor’s short-term investments held as of December 31, 2014, and December 31, 2013, were $100.0 million and $28.2 million, respectively. These investments consisted of fixed term deposits and certificates of deposit (CDs) at December 31, 2014, and December 31, 2013, respectively, and are classified as available-for-sale. The interest rates on the fixed term deposits and CDs are fixed at inception and interest income is recorded as earned.

No realized or unrealized gains or losses were incurred in 2014, 2013 or 2012.

The contractual maturities of all of the fixed term deposits outstanding at December 31, 2014, are before December 31, 2015.

5. ACCOUNTS RECEIVABLE

An allowance for doubtful accounts is maintained for estimated losses resulting from the inability of our customers to make required payments. Accounts receivable are stated net of the allowance for doubtful accounts of $65.4 million at December 31, 2014 ($58.3 million at December 31, 2013, and $57.4 million at December 31, 2012).

6. INVENTORIES

Inventories consist of approximately 40% raw materials and supplies and 60% finished and semi-finished products at December 31, 2014, and December 31, 2013. Nucor’s manufacturing process consists of a continuous, vertically integrated process from which products are sold to customers at various stages throughout the process. Since most steel products can be classified as either finished or semi-finished products, these two categories of inventory are combined.

If the FIFO method of accounting had been used, inventories would have been $567.4 million higher at December 31, 2014 ($624.7 million higher at December 31, 2013). Use of the lower of cost or market method reduced inventories by $2.7 million at December 31, 2014 ($2.1 million at December 31, 2013).

7. PROPERTY, PLANT AND EQUIPMENT

(in thousands) 

December 31,	2014			2013
Land and improvements	$	576,511		$	555,309
Buildings and improvements		1,018,342			941,379
Machinery and equipment		10,080,640			9,159,151
Proved oil and gas properties		584,466			487,033
Construction in process and equipment deposits		193,594			400,373
		12,453,553			11,543,245
Less accumulated depreciation		(7,165,914	)		(6,626,221	)
	$	5,287,639		$	4,917,024

The estimated useful lives primarily range from 5 to 25 years for land improvements, 4 to 40 years for buildings and improvements and 2 to 15 years for machinery and equipment. The useful life for proved oil and gas properties is based on the unit-of-production method and varies by well.

Included within property, plant and equipment, net at December 31, 2014, is $22.8 million of assets, net of accumulated depreciation, under a capital lease agreement (none at December 31, 2013). The gross amount of property, plant and equipment acquired under the capital lease was $25.4 million, which is not included in capital expenditures on the condensed consolidated statement of cash flows. Total obligations associated with this capital lease agreement were $23.2 million at December 31, 2014 (none at December 31, 2013), of which $2.2 million was classified in accrued expenses and other current liabilities and $21.0 million was classified in deferred credits and other liabilities in the consolidated balance sheets.

In the third quarter of 2013, one of three iron ore storage domes collapsed at Nucor Steel Louisiana in St. James Parish. As a result, Nucor recorded a partial write-down of assets at the facility, including $21.0 million of property, plant and equipment and $7.0 million of inventory, offset by a $14.0 million insurance receivable that was based on management’s best estimate of probable insurance recoveries. The associated net charge of $14.0 million was included in marketing, administrative and other expenses in the consolidated statement of earnings in 2013. As of December 31, 2014, Nucor has received initial payments of $10.3 million related

      57      

to the insurance receivable. The two remaining storage domes have a carrying value of approximately $20 million. Nucor continues to assess these two domes and the assets associated with them. As a result of the ongoing assessment, it is possible that Nucor will make operational decisions that could impact the carrying value of the domes and associated assets and the amount of insurance proceeds claimed by and payable to us.

In the fourth quarter of 2014, an equipment failure occurred at Nucor Steel Louisiana related to the process gas heater. There were no injuries, no environmental impact and no damage to any other part of the direct reduced iron (DRI) facility as a result of this incident. Production operations were suspended after the failure and have not restarted. Nucor is in the process of making the necessary repairs and adjustments to the process gas heater. Nucor Steel Louisiana is estimated to resume operations late in the first quarter of 2015.

Included in property plant and equipment within the steel mills segment at December 31, 2014, and December 31, 2013, is approximately $84.1 million related to the anticipated further development activities at the St. James Parish site, the majority of which are engineering designs. Changes to the anticipated development activities at this site could result in full or partial impairment of these capitalized assets.

Nucor capitalized $2.9 million of interest expense in 2014 ($10.9 million in 2013 and $4.7 million in 2012) related to the borrowing costs associated with various construction projects.

8. RESTRICTED CASH AND INVESTMENTS

There were no restricted cash or investments as of December 31, 2014, or December 31, 2013. In November 2010, Nucor issued $600.0 million in 30-year Gulf Opportunity Zone bonds, the net proceeds of which were accounted for as restricted cash and investments. The restricted cash and investments were held in a trust account and were used to partially fund the capital costs associated with the construction of Nucor’s DRI facility in St. James Parish, Louisiana. Funds were disbursed as qualified expenditures for the construction of the facility were made ($275.3 million in 2013 and $311.8 million in 2012).

9. GOODWILL AND OTHER INTANGIBLE ASSETS

The change in the net carrying amount of goodwill for the years ended December 31, 2014 and 2013 by segment is as follows:

(in thousands)

	Steel Mills		Steel     Products			Raw     Materials		All Other			Total
Balance, December 31, 2012		$407,045		$805,416			$703,225		$   88,852			$2,004,538
Reclassifications		88,852		—			—		(88,852	)		—
Translation		—		(26,067	)		—		—			(26,067	)
Other		—		(4,863	)		—		—			(4,863	)
Balance, December 31, 2013		495,897		774,486			703,225		—			1,973,608
Acquisitions		98,505		—			—		—			98,505
Translation		—		(30,112	)		—		—			(30,112	)
Other		—		311			26,352		—			26,663
Balance, December 31, 2014		$594,402		$744,685			$729,577		$           —			$2,068,664

The majority of goodwill is not tax deductible.

Previously, Nucor’s steel trading businesses and rebar distribution businesses were reported in the “All Other” category. Beginning in the first quarter of 2013, these businesses were reclassified to the steel mills segment as part of a realignment of Nucor’s reportable segments to better reflect the way in which they are managed (see Note 1).

Goodwill increased by $26.4 million in the third quarter of 2014 due to a correction of deferred taxes related to purchase accounting for the acquisition of The David J. Joseph Company in 2008. This correction did not have an impact on the condensed consolidated statements of earnings, condensed consolidated statements of comprehensive income and the condensed consolidated statements of cash flows in the periods presented and in prior years. Also, this correction had no impact on the results of the goodwill impairment assessments performed in prior periods and is not material to the current or any prior period.

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Intangible assets with estimated lives of 5 to 22 years are amortized on a straight-line or accelerated basis and are comprised of the following:

(in thousands)

December 31,	2014				2013
	Gross         Amount		Accumulated     Amortization		Gross         Amount		Accumulated     Amortization
Customer relationships		$1,199,942		$454,353		$1,147,786		$391,254
Trademarks and trade names		158,584		48,356		151,332		40,397
Other		22,823		16,547		21,869		15,182
		$1,381,349		$519,256		$1,320,987		$446,833

Intangible asset amortization expense was $72.4 million in 2014 ($74.4 million in 2013 and $73.0 million in 2012). Annual amortization expense is estimated to be $73.2 million in 2015; $71.5 million in 2016; $69.8 million in 2017; $66.1 million in 2018 and $63.3 million in 2019.

The Company completed its annual goodwill impairment testing as of the first days of the fourth quarters of 2014, 2013 and 2012 and concluded that as of such dates there was no impairment of goodwill for any of its reporting units. We do not believe there are any reporting units at significant risk of goodwill impairment in the near term. However, assumptions in estimating reporting unit fair values are subject to a high degree of judgment and complexity. Changes in assumptions and estimates may affect the estimated reporting unit fair values and could result in impairment charges in future periods.

There are no significant historical accumulated impairment charges, by segment or in the aggregate, related to goodwill.

10. EQUITY INVESTMENTS

The carrying value of our equity investments in domestic and foreign companies was $872.5 million at December 31, 2014 ($936.0 million at December 31, 2013), and is recorded in other assets in the consolidated balance sheets.

Duferdofin Nucor Nucor owns a 50% economic and voting interest in Duferdofin Nucor S.r.l. (Duferdofin Nucor), an Italian steel manufacturer, and accounts for the investment (on a one-month lag basis) under the equity method, as control and risk of loss are shared equally between the members.

Nucor’s investment in Duferdofin Nucor at December 31, 2014, was $412.9 million ($465.4 million at December 31, 2013). Nucor’s 50% share of the total net assets of Duferdofin Nucor was $57.4 million at December 31, 2014, resulting in a basis difference of $355.5 million due to the step-up to fair value of certain assets and liabilities attributable to Duferdofin Nucor as well as the identification of goodwill ($293.2 million) and finite-lived intangible assets. This basis difference, excluding the portion attributable to goodwill, is being amortized based on the remaining estimated useful lives of the various underlying net assets, as appropriate. Amortization expense and other purchase accounting adjustments associated with the fair value step-up were $10.5 million in 2014 ($11.2 million in 2013 and $11.1 million in 2012).

As of December 31, 2014, Nucor had outstanding notes receivable of €35.0 million ($42.5 million) from Duferdofin Nucor (€35.0 million, or $48.2 million, as of December 31, 2013). The notes receivable bear interest at 1.34% and will reset annually on September 30 to the twelve-month Euro Interbank Offered Rate (Euribor) plus 1% per year. The principal amounts are due on January 31, 2016. As of December 31, 2014, and December 31, 2013, the note receivable was classified in other assets in the consolidated balance sheets.

Nucor has issued guarantees, the fair value of which is immaterial, for its ownership percentage (50%) of Duferdofin Nucor’s borrowings under Facility A of a Structured Trade Finance Facilities Agreement as well as the Standby Medium Long Term Loan Credit Facility, which mature on April 26, 2016, and April 22, 2016, respectively. After amending the loan agreement in the second quarter of 2013, the maximum amount Duferdofin Nucor can borrow under Facility A is €122.5 million ($148.7 million as of December 31, 2014). As of December 31, 2014, there was €107.0 million ($129.9 million) outstanding under that facility (€112.0 million, or $154.4 million, at December 31, 2013). The guarantee under the Standby Medium Long Term Credit Facility was issued in the second quarter of 2014, and as of December 31, 2014, Duferdofin Nucor had the maximum borrowing amount of €60.0 million ($72.8 million) outstanding under the facility. If Duferdofin Nucor fails to pay when due any amounts for which it is obligated under Facility A or the Standby Medium Long Term Credit Facility, Nucor could be required to pay 50% of such amounts pursuant to and in accordance with the terms of its guarantees. Any indebtedness of Duferdofin Nucor to Nucor is effectively subordinated to the indebtedness of Duferdofin Nucor under both financing agreements. Nucor has not recorded any liability associated with these guarantees.

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NuMit Nucor has a 50% economic and voting interest in NuMit LLC (NuMit). NuMit owns 100% of the equity interest in Steel Technologies LLC, an operator of 25 sheet processing facilities located throughout the U.S., Canada and Mexico. Nucor accounts for the investment in NuMit (on a one-month lag basis) under the equity method as control and risk of loss are shared equally between the members.

Nucor’s investment in NuMit at December 31, 2014, was $301.5 million ($318.4 million as of December 31, 2013). At December 31, 2013, Nucor had a $40.0 million note receivable and a receivable of $17.0 million on a $100.0 million line of credit that Nucor extended to Steel Technologies, both of which were included in other current assets in the consolidated balance sheets. Steel Technologies secured its own external financing in 2014 and, as a result, both the note receivable and the amounts Steel Technologies had outstanding on the line of credit with Nucor were repaid in 2014. Nucor no longer has a line of credit extended to Steel Technologies. Nucor received distributions of $52.7 million and $6.7 million from NuMit during 2014 and 2013, respectively.

Hunter Ridge Nucor has a 50% economic and voting interest in Hunter Ridge Energy Services LLC (Hunter Ridge). Hunter Ridge provides services for the gathering, separation and compression of energy products including natural gas produced by Nucor’s working interest drilling program. Nucor accounts for the investment (on a one-month lag basis) under the equity method, as control and risk of loss are shared equally between the members. Nucor’s investment in Hunter Ridge at December 31, 2014, was $138.6 million ($134.5 million at December 31, 2013).

All Equity Investments Nucor reviews its equity investments for impairment if and when circumstances indicate that a decline in value below their carrying amounts may have occurred. In the second quarter of 2012, Nucor concluded that a triggering event occurred requiring assessment for impairment of its equity investment in Duferdofin Nucor due to the continued declines in the global demand for steel, the escalated economic and political turmoil in Europe and continued operating performance well below budgeted levels through the first half of 2012. Another contributing factor was that Duferdofin Nucor had a recently updated unfavorable forecast of future operating performance. The diminished demand combined with the continued lower than budgeted levels of operating performance significantly impacted the financial results of Duferdofin Nucor through the first half of 2012. After completing its assessment, Nucor determined that the carrying amount exceeded its estimated fair value and recorded a $30.0 million impairment charge against the Company’s investment in Duferdofin Nucor. This charge is included in impairment of non-current assets in the consolidated statements of earnings.

Although the operating results of Duferdofin Nucor have improved since 2012 and there have been no significant deteriorations in near-term financial projections or other key assumptions since the last impairment test performed in the fourth quarter of 2013, Nucor concluded that it was appropriate to reassess its equity investment in Duferdofin Nucor for impairment during the fourth quarter of 2014 due to the protracted challenging steel market conditions in Europe. After completing its assessment, the Company determined that the estimated fair value exceeded its carrying amount by a sufficient amount and that there was no need for additional impairment charges. The assumptions that most significantly affect the fair value determination include projected revenues and the discount rate. It is reasonably possible that material deviation of future performance from the estimates used in our most recent valuation could result in further impairment of our investment in Duferdofin Nucor.

11. CURRENT LIABILITIES

Book overdrafts, included in accounts payable in the consolidated balance sheets, were $107.9 million at December 31, 2014 ($81.6 million at December 31, 2013). Dividends payable, included in accrued expenses and other current liabilities in the consolidated balance sheets, were $119.7 million at December 31, 2014 ($118.7 million at December 31, 2013).

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12. DEBT AND OTHER FINANCING ARRANGEMENTS

				(in thousands)
December 31,	2014				2013
Industrial revenue bonds:
0.17% to 0.24%, variable,     due from 2015 to 2040	$	1,026,935			$	1,030,200
Notes, 5.75%, due 2017		600,000				600,000
Notes, 5.85%, due 2018		500,000				500,000
Notes, 4.125%, due 2022		600,000				600,000
Notes, 4.0%, due 2023		500,000				500,000
Notes, 6.40%, due 2037		650,000				650,000
Notes, 5.20%, due 2043		500,000				500,000
		4,376,935				4,380,200
Less current maturities		(16,335	)			(3,300	)
	$	4,360,600			$	4,376,900

Annual aggregate long-term debt maturities are: $16.3 million in 2015; none in 2016; $600.0 million in 2017; $500.0 million in 2018; none in 2019 and $3.261 billion thereafter.

In October 2014, Nucor issued approximately $300 million of commercial paper to partially fund the acquisition of Gallatin. As of December 31, 2014, $151.4 million was outstanding under the commercial paper program with a weighted average interest rate of 0.30% (none at December 31, 2013). All outstanding commercial paper instruments mature within 90 days, the balance of which is presented in short-term debt in the consolidated balance sheet.

In 2013, Nucor issued $500.0 million of 4.00% notes due in 2023 and $500.0 million of 5.20% notes due in 2043. Net proceeds of the issuances were $991.5 million. Costs of $8.5 million associated with the issuances were capitalized and are being amortized over the life of the notes.

Nucor amended its $1.50 billion unsecured revolving credit facility in 2013 to extend the maturity date from December 2016 to August 2018. The unsecured revolving credit facility provides up to $1.50 billion in revolving loans and allows up to $500.0 million in additional commitments at Nucor’s election in accordance with the terms set forth in the credit agreement. Up to the equivalent of $850.0 million of the credit facility is available for foreign currency loans, up to $500.0 million is available for the issuance of letters of credit and up to $500.0 million is available for the issuance of revolving loans for Nucor subsidiaries in accordance with terms set forth in the credit agreement. The credit facility provides for a pricing grid based upon the credit rating of Nucor’s senior unsecured long-term debt and, alternatively, interest rates quoted by lenders in connection with competitive bidding. The credit facility includes customary financial and other covenants, including a limit on the ratio of funded debt to capital of 60%, a limit on Nucor’s ability to pledge the Company’s assets and a limit on consolidations, mergers and sales of assets. As of December 31, 2014, Nucor’s funded debt to total capital ratio was 36%, and Nucor was in compliance with all covenants under the credit facility. No borrowings were outstanding under the credit facility as of December 31, 2014 and 2013.

Harris Steel has credit facilities totaling approximately $30.2 million, with $1.5 million outstanding at December 31, 2014 (none at December 31, 2013). In addition, the business of Nucor Trading S.A. is financed by uncommitted trade credit arrangements with a number of European banking institutions. As of December 31, 2014, Nucor Trading S.A. had outstanding borrowings of $54.6 million, which is presented in short-term debt in the consolidated balance sheets ($29.2 million at December 31, 2013). In addition, $38.5 million of the amount outstanding at December 31, 2014 ($29.1 million at December 31, 2013) was guaranteed by Nucor, the fair value of such guarantee is immaterial. If Nucor Trading S.A. fails to pay when due any amounts for which it is obligated, Nucor could be required to pay such amounts pursuant to and in accordance with the terms of the guarantee. Nucor has not recorded any liability associated with the guarantee.

Letters of credit totaling $42.2 million were outstanding as of December 31, 2014, related to certain obligations, including workers’ compensation, utilities deposits and credit arrangements by Nucor Trading S.A. for commitments to purchase inventories.

13. CAPITAL STOCK

The par value of Nucor’s common stock is $0.40 per share and there are 800 million shares authorized. In addition, 250,000 shares of preferred stock, par value of $4.00 per share, are authorized, with preferences, rights and restrictions as may be fixed by Nucor’s Board of Directors. There are no shares of preferred stock issued or outstanding.

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14. DERIVATIVE FINANCIAL INSTRUMENTS

The following tables summarize information regarding Nucor’s derivative instruments:

Fair Value of Derivative Instruments

		(in thousands)
		Fair Value
December 31,	Consolidated Balance Sheet Location	2014			2013
Asset derivatives not designated as hedging instruments:
Commodity contracts	Other current assets	$	1,856		$	—
Foreign exchange contracts	Other current assets		372			—
Total asset derivatives		$	2,228		$	—
Liability derivatives designated as hedging instruments:
Commodity contracts	Accrued expenses and other current liabilities	$	(6,400	)	$	—
Commodity contracts	Deferred credits and other liabilities		(6,300	)		—
Total liability derivatives designated as hedging instruments			(12,700	)		—
Liability derivatives not designated as hedging instruments:
Commodity contracts	Accrued expenses and other current liabilities		—			(553	)
Foreign exchange contracts	Accrued expenses and other current liabilities		—			(2	)
Total liability derivatives not designated as hedging instruments			—			(555	)
Total liability derivatives		$	(12,700	)	$	(555	)

The Effect of Derivative Instruments on the Consolidated Statements of Earnings

Derivatives Designated as Hedging Instruments																						(in thousands)
Derivatives  in Cash  Flow Hedging  Relationships	Statement of   Earnings  Location	Amount of Gain or (Loss), net of tax, Recognized in OCI on Derivatives (Effective Portion)								Amount of Gain or (Loss), net of tax, Reclassified from Accumulated OCI into Earnings on Derivatives (Effective Portion)										Amount of Gain or (Loss), net of tax, Recognized in Earnings on Derivatives (Ineffective Portion)
		2014			2013		2012			2014				2013		2012				2014		2013		2012
Commodity   contracts	Cost of products sold	$	(8,542	)	$	—	$	(2,264	)		$	(542	)	$	—		$	(42,515	)	$	—	$	—	$	500

Derivatives Not Designated as Hedging Instruments				(in thousands)
Derivatives Not Designated   as Hedging Instruments	Statement of Earnings Location	Amount of Gain or (Loss) Recognized in Earnings on Derivatives
		2014		2013		2012
Commodity contracts	Cost of products sold	$	1,890	$	4,622	$	1,321
Foreign exchange contracts	Cost of products sold		748		112		198
Total		$	2,638	$	4,734	$	1,519

At December 31, 2014, natural gas swaps covering approximately 15.6 million MMBTUs (extending through February 2017) were outstanding.

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15. FAIR VALUE MEASUREMENTS

The following table summarizes information regarding Nucor’s financial assets and financial liabilities that are measured at fair value as of December 31, 2014 and 2013. Nucor does not have any non-financial assets or liabilities that are measured at fair value on a recurring basis.

			(in thousands)
		Fair Value Measurements at Reporting Date Using
December 31,	Carrying Amount in Consolidated   Balance Sheets	Quoted Prices  in Active Markets  for Identical Assets  (Level 1)	Significant  Other Observable   Inputs (Level 2)	Significant   Unobservable   Inputs   (Level 3)
2014
Assets:
Cash equivalents	$    861,656	$    861,656	$          —
Short-term investments	100,000	100,000	—
Foreign exchange and commodity contracts	2,228	—	2,228	—
Total assets	$    963,884	$   961,656	$    2,228	—
Liabilities:
Commodity contracts	$     (12,700)	—	$ (12,700)	—
2013
Assets:
Cash equivalents	$ 1,269,465	$ 1,269,465
Short-term investments	28,191	28,191
Total assets	$ 1,297,656	$ 1,297,656	—	—
Liabilities:
Foreign exchange and commodity contracts	$          (555)	—	$      (555)	—

Fair value measurements for Nucor’s cash equivalents and short-term investments are classified under Level 1 because such measurements are based on quoted market prices in active markets for identical assets. Fair value measurements for Nucor’s derivatives are classified under Level 2 because such measurements are based on published market prices for similar assets or are estimated based on published market prices for similar assets or are estimated based on observable inputs such as interest rates, yield curves, credit risks, spot and future commodity prices and spot and future exchange rates.

The fair value of short-term and long-term debt, including current maturities, was approximately $4.97 billion at December 31, 2014 ($4.61 billion at December 31, 2013). The debt fair value estimates are classified under Level 2 because such estimates are based on readily available market prices of our debt at December 31, 2014 and 2013, or similar debt with the same maturities, ratings and interest rates.

16. CONTINGENCIES

Nucor is subject to environmental laws and regulations established by federal, state and local authorities and, accordingly, makes provision for the estimated costs of compliance. Of the undiscounted total of $27.2 million of accrued environmental costs at December 31, 2014 ($22.9 million at December 31, 2013), $11.3 million was classified in accrued expenses and other current liabilities ($6.9 million at December 31, 2013) and $15.9 million was classified in deferred credits and other liabilities ($16.0 million at December 31, 2013). Inherent uncertainties exist in these estimates primarily due to unknown conditions, evolving remediation technology and changing governmental regulations and legal standards.

Nucor has been named, along with other major steel producers, as a co-defendant in several related antitrust class-action complaints filed by Standard Iron Works and other steel purchasers in the United States District Court for the Northern District of Illinois. The majority of these complaints were filed in September and October of 2008, with two additional complaints being filed in July and December of 2010. Two of these complaints have been voluntarily dismissed and are no longer pending. The plaintiffs allege that from April 1, 2005 through December 31, 2007, eight steel manufacturers, including Nucor, engaged in anticompetitive activities

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with respect to the production and sale of steel. The plaintiffs seek monetary and other relief. Five of the eight defendants have reached court approved settlements with the plaintiffs. Although we believe the plaintiffs’ claims are without merit, we will continue to vigorously defend against them, but we cannot at this time predict the outcome of this litigation or estimate the range of Nucor’s potential exposure and, consequently, have not recorded any reserves or contingencies related to this lawsuit.

On March 25, 2014, a jury in the U.S. District Court for the Southern District of Texas returned a verdict against Nucor and its co-defendants in an antitrust lawsuit brought by plaintiff MM Steel, LP, a steel plate service center located in Houston. The jury returned a verdict of $52.0 million in damages against all defendants jointly and severally. On June 1, 2014, pursuant to antitrust laws providing for treble damages, the court awarded a judgment to MM Steel jointly and severally against the defendants in an amount totaling $160.8 million after including costs and attorneys’ fees. The Company has appealed the judgment to the U.S. Court of Appeals for the Fifth Circuit, and believes that it has valid grounds to have the judgment vacated or reversed. The Company believes that the evidence against Nucor was insufficient to support any finding that Nucor was involved in a horizontal conspiracy. The Company believes that the trial court wrongly excluded relevant testimony of Nucor’s expert witness. The Company believes that the trial court erred in admitting hearsay evidence. Finally, the Company believes that the trial court did not sufficiently instruct the jury on applicable legal principles. As a result, the Company believes that the likelihood that the judgment will be affirmed is not probable, and, accordingly, it has not recorded any reserves or contingencies related to this legal matter. Although we are defending this lawsuit vigorously, its ultimate resolution is uncertain.

We are from time to time a party to various other lawsuits, claims and legal proceedings that arise in the ordinary course of business. With respect to all such lawsuits, claims and proceedings, we record reserves when it is probable a liability has been incurred and the amount of loss can be reasonably estimated. We do not believe that any of these proceedings, individually or in the aggregate, would be expected to have a material adverse effect on our results of operations, financial position or cash flows. Nucor maintains liability insurance for certain risks that is subject to certain self-insurance limits.

17. STOCK-BASED COMPENSATION

Stock Options Stock options may be granted to Nucor’s key employees, officers and non-employee directors with exercise prices at 100% of the market value on the date of the grant. The stock options granted are generally exercisable at the end of three years and have a term of 10 years. New shares are issued upon exercise of stock options.

A summary of activity under Nucor’s stock option plans is as follows:

											(shares in thousands)
Year Ended December 31,	2014					2013				2012
	Shares			Weighted-  Average Exercise Price		Shares		Weighted-  Average Exercise Price		Shares				Weighted- Average Exercise Price
Number of shares under option:
Outstanding at beginning of year		2,089			$40.47		1,543		$39.03			1,156			$38.26
Granted		469			$50.63		546		$44.51			741			$35.76
Exercised		(136	)		$41.30		—		—			(354	)		$29.67
Canceled		—			—		—		—			—			—
Outstanding at end of year		2,422			$42.39		2,089		$40.47			1,543			$39.03
Options exercisable at end of year		1,263			$40.40		1,012		$39.75			—			—

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The shares reserved for future grants as of December 31, 2014, 2013 and 2012 are reflected in the restricted stock units table below. The total intrinsic value of options (the amount by which the stock price exceeded the exercise price of the option on the date of exercise) that were exercised during 2014 was $2.0 million (none in 2013 and $4.3 million in 2012).

The following table summarizes information about stock options outstanding at December 31, 2014:

					(shares in thousands)
	Options Outstanding
Exercise Price	Options         Outstanding		Options     Exercisable		Weighted-Average Remaining Contractual Life
$35.76		689		391		7.4 years
$41.43		242		242		5.4 years
$42.34		530		530		6.3 years
$44.51		506		80		8.4 years
$50.63		455		20		9.0 years
$35.76 – $50.63		2,422		1,263		7.5 years

As of December 31, 2014, the total aggregate intrinsic value of options outstanding and options exercisable was $16.9 million and $11.0 million, respectively.

The grant date fair value of options granted was $17.48 per share in 2014 ($15.03 per share in 2013 and $11.40 per share in 2012). The fair value was estimated using the Black-Scholes option-pricing model with the following assumptions:

	2014			2013			2012
Exercise price		$50.63			$44.51			$35.76
Expected dividend yield		2.92	%		3.30	%		4.08	%
Expected stock price volatility		45.00	%		46.94	%		48.99	%
Risk-free interest rate		2.03	%		1.51	%		1.06	%
Expected life (in years)		6.5			6.5			6.5

Stock options granted to employees who are eligible for retirement on the date of grant are expensed immediately since these awards vest upon retirement from the Company. Retirement, for purposes of vesting in these stock options, means termination of employment after satisfying age and years of service requirements. Similarly, stock options granted to employees who will become retirement-eligible prior to the end of the vesting term are expensed over the period through which the employee will become retirement-eligible. Compensation expense for stock options granted to employees who are not retirement-eligible is recognized on a straight-line basis over the vesting period. Compensation expense for stock options was $7.7 million in 2014 ($8.6 million in 2013 and $9.9 million in 2012). As of December 31, 2014, unrecognized compensation expense related to options was $0.5 million, which is expected to be recognized over 2.4 years.

Restricted Stock Units Nucor annually grants restricted stock units (RSUs) to key employees, officers and non-employee directors. The RSUs typically vest and are converted to common stock in three equal installments on each of the first three anniversaries of the grant date. A portion of the RSUs awarded to officers vest upon the officer’s retirement. Retirement, for purposes of vesting in these units only, means termination of employment with approval of the Compensation and Executive Development Committee of the Board of Directors after satisfying age and years of service requirements. RSUs granted to non-employee directors are fully vested on the grant date and are payable to the non-employee director in the form of common stock after the termination of the director’s service on the Board of Directors.

RSUs granted to employees who are eligible for retirement on the date of grant are expensed immediately, and RSUs granted to employees who will become retirement-eligible prior to the end of the vesting term are expensed over the period through which the employee will become retirement-eligible since these awards vest upon retirement from the Company. Compensation expense for RSUs granted to employees who are not retirement-eligible is recognized on a straight-line basis over the vesting period.

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Cash dividend equivalents are paid to participants each quarter. Dividend equivalents paid on units expected to vest are recognized as a reduction in retained earnings.

The fair value of the RSUs is determined based on the closing stock price of Nucor’s common stock on the day before the grant. A summary of Nucor’s restricted stock unit activity is as follows:

											(shares in thousands)
Year Ended December 31,	2014					2013					2012
	Shares			Grant Date Fair Value		Shares			Grant Date Fair Value		Shares			Grant Date Fair Value
Restricted stock units:
Unvested at beginning of year		1,122			$42.51		1,106			$40.80		962			$46.09
Granted		655			$50.63		789			$44.51		1,101			$35.76
Vested		(752	)		$44.90		(762	)		$42.15		(915	)		$40.36
Canceled		(13	)		$42.66		(11	)		$39.08		(42	)		$39.41
Unvested at end of year		1,012			$45.98		1,122			$42.51		1,106			$40.80
Shares reserved for future grants   (stock options and RSUs)		11,851					10,486					11,839

Compensation expense for RSUs was $32.6 million in 2014 ($32.6 million in 2013 and $34.2 million in 2012). The total fair value of shares vested during 2014 was $38.1 million ($34.1 million in 2013 and $33.1 million in 2012). As of December 31, 2014, unrecognized compensation expense related to unvested RSUs was $29.3 million, which is expected to be recognized over a weighted-average period of two years.

Restricted Stock Awards Nucor’s Senior Officers Long-Term Incentive Plan (the LTIP) and Annual Incentive Plan (the AIP) authorize the award of shares of common stock to officers subject to certain conditions and restrictions.

The LTIP provides for the award of shares of restricted common stock at the end of each LTIP performance measurement period at no cost to officers if certain financial performance goals are met during the period. One-third of the LTIP restricted stock award vests upon each of the first three anniversaries of the award date or, if earlier, upon the officer’s attainment of age 55 while employed by Nucor. Although participants are entitled to cash dividends and may vote such awarded shares, the sale or transfer of such shares is limited during the restricted period.

The AIP provides for the payment of annual cash incentive awards. An AIP participant may elect, however, to defer payment of up to one-half of an annual incentive award. In such event, the deferred AIP award is converted into common stock units and credited with a deferral incentive, in the form of additional common stock units, equal to 25% of the number of common stock units attributable to the deferred AIP award. Common stock units attributable to deferred AIP awards are fully vested. Common stock units credited as a deferral incentive vest upon the AIP participant’s attainment of age 55 while employed by Nucor. Vested common stock units are paid to AIP participants in the form of shares of common stock following their termination of employment with Nucor.

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A summary of Nucor’s restricted stock activity under the AIP and LTIP is as follows:

														(shares in thousands)
Year Ended December 31,		2014						2013						2012
	Shares				Grant Date   Fair Value		Shares				Grant Date   Fair Value		Shares				Grant Date   Fair Value
Restricted stock awards and units:
Unvested at beginning of year			73			$45.49			72			$43.72			94			$42.46
Granted			127			$50.35			122			$47.36			122			$42.20
Vested			(135	)		$48.76			(121	)		$46.32			(144	)		$41.62
Canceled			—			—			—			—			—			—
Unvested at end of year			65			$48.20			73			$45.49			72			$43.72
Shares reserved for future grants			1,111						1,238						1,360

Compensation expense for common stock and common stock units awarded under the AIP and LTIP is recorded over the performance measurement and vesting periods based on the anticipated number and market value of shares of common stock and common stock units to be awarded. Compensation expense for anticipated awards based upon Nucor’s financial performance, exclusive of amounts payable in cash, was $6.1 million in 2014 ($6.3 million in 2013 and $6.6 million in 2012). The total fair value of shares vested during 2014 was $6.8 million ($5.7 million in 2013 and $6.0 million in 2012). As of December 31, 2014, unrecognized compensation expense related to unvested restricted stock awards was $0.8 million, which is expected to be recognized over a weighted-average period of 1.7 years.

18. EMPLOYEE BENEFIT PLANS

Nucor makes contributions to a Profit Sharing and Retirement Savings Plan for qualified employees based on the profitability of the Company. Nucor’s expense for these benefits totaled $110.1 million in 2014 ($71.7 million in 2013 and $77.7 million in 2012). The related liability for these benefits is included in salaries, wages and related accruals.

Nucor also has a medical plan covering certain eligible early retirees. The unfunded obligation, included in deferred credits and other liabilities in the consolidated balance sheets, totaled $14.1 million at December 31, 2014 ($9.9 million at December 31, 2013). The benefit associated with this early retiree medical plan totaled $0.6 million in 2014 (benefits of $0.6 million and $1.9 million in 2013 and 2012, respectively).

The discount rate used was 3.8% in 2014 (4.6% in 2013 and 3.7% in 2012). The health care cost increase trend rate used was 6.5% in 2014 (6.6% in both 2013 and 2012). The health care cost increase in the trend rate is projected to decline gradually to 4.5% by 2027.

19. INTEREST EXPENSE (INCOME)

The components of net interest expense are as follows:

							(in thousands)
Year Ended December 31,	2014			2013				2012
Interest expense	$	174,142		$	151,986			$	173,503
Interest income		(4,886	)		(5,091	)			(11,128	)
Interest expense, net	$	169,256		$	146,895			$	162,375

Interest paid was $180.5 million in 2014 ($141.2 million in 2013 and $178.0 million in 2012).

      67      

20. INCOME TAXES

Components of earnings from continuing operations before income taxes and noncontrolling interests are as follows:

					(in thousands)
Year Ended December 31,	2014		2013			2012
United States	$	1,161,953	$	755,921		$	854,705
Foreign		42,624		35,202			(1,765	)
	$	1,204,577	$	791,123		$	852,940

The provision for income taxes consists of the following:

							(in thousands)
Year Ended December 31,	2014			2013				2012
Current:
Federal	$	247,898		$	138,343			$	261,552
State		30,790			223				20,337
Foreign		19,235			10,464				3,199
Total current		297,923			149,030				285,088
Deferred:
Federal		94,991			36,157				(23,052	)
State		3,958			(39	)			(10,440	)
Foreign		(8,085	)		20,446				8,218
Total deferred		90,864			56,564				(25,274	)
Total provision for income taxes	$	388,787		$	205,594			$	259,814

A reconciliation of the federal statutory tax rate (35%) to the total provision is as follows:

Year Ended December 31,	2014			2013			2012
Taxes computed at statutory rate		35.00	%		35.00	%		35.00	%
State income taxes, net of federal income tax benefit		3.32			0.02			0.75
Federal research credit		(0.27	)		(0.79	)		—
Domestic manufacturing deduction		(2.27	)		(1.74	)		(3.25	)
Equity in losses of foreign joint ventures		0.85			1.36			1.43
Foreign rate differential		(0.93	)		(2.35	)		0.60
Noncontrolling interests		(2.96	)		(4.32	)		(3.64	)
Out of period correction		(1.10	)		(2.57	)		—
Other, net		0.64			1.38			(0.43	)
Provision for income taxes		32.28	%		25.99	%		30.46	%

      68      

The 2014 provision included a $13.2 million out-of-period non-cash gain related to a correction to tax balances. The 2013 provision included a $21.3 million out-of-period non-cash gain related to a correction to the deferred tax balances. The out-of-period adjustments did not have a material impact in any previously reported periods.

Deferred tax assets and liabilities resulted from the following:

	(in thousands)
December 31,	2014			2013
Deferred tax assets:
Accrued liabilities and reserves	$	154,381		$	102,933
Allowance for doubtful accounts		24,741			19,756
Inventory		189,120			206,826
Post-retirement benefits		898			6,268
Commodity hedges		4,773			—
Net operating loss carryforward		9,880			12,859
Tax credit carryforwards		29,142			56,185
Total deferred tax assets		412,935			404,827
Deferred tax liabilities:
Holdbacks and amounts not due under contracts		(14,945	)		(16,582	)
Cumulative translation adjustments		(1,819	)		(1,403	)
Commodity hedges		—			(805	)
Intangibles		(236,618	)		(210,791	)
Property, plant and equipment		(698,567	)		(610,451	)
Total deferred tax liabilities		(951,949	)		(840,032	)
Total net deferred tax liabilities	$	(539,014	)	$	(435,205	)

Current deferred tax assets included in other current assets were $253.4 million at December 31, 2014 ($255.5 million at December 31, 2013). Current deferred tax liabilities included in other current liabilities were $13.1 million at December 31, 2014 ($14.6 million at December 31, 2013). Non-current deferred tax liabilities included in deferred credits and other liabilities were $779.3 million at December 31, 2014 ($676.2 million at December 31, 2013). Nucor paid $398.7 million in net federal, state and foreign income taxes in 2014 ($64.8 million and $313.5 million in 2013 and 2012, respectively).

Cumulative undistributed foreign earnings for which U.S. taxes have not been provided are included in consolidated retained earnings in the amount of $194.0 million at December 31, 2014 ($222.4 million at December 31, 2013). These earnings are considered to be indefinitely reinvested and, accordingly, no provisions for U.S. federal and state income taxes are required. It is not practicable to determine the amount of unrecognized deferred tax liability related to the unremitted earnings.

State net operating loss carryforwards were $462.8 million at December 31, 2014 ($824.0 million at December 31, 2013). If unused, they will expire between 2015 and 2034. The majority of this change is due to a modification in a state filing method. Foreign net operating loss carryforwards were $44.9 million at December 31, 2014 ($50.5 million at December 31, 2013). If unused, they will expire between 2027 and 2033.

At December 31, 2014, Nucor had approximately $63.0 million of unrecognized tax benefits, of which $62.9 million would affect Nucor’s effective tax rate, if recognized. At December 31, 2013, Nucor had approximately $66.0 million of unrecognized tax benefits, of which $66.3 million would affect Nucor’s effective tax rate, if recognized.

      69      

A reconciliation of the beginning and ending amounts of unrecognized tax benefits recorded in deferred credits and other liabilities is as follows:

	(in thousands)
Year Ended December 31,	2014			2013			2012
Balance at beginning of year		$65,975			$80,862			$80,897
Additions based on tax positions related to current year		6,295			4,849			9,456
Reductions based on tax positions related to current year		—			(55	)		(132	)
Additions based on tax positions related to prior years		5,673			2,307			5,821
Reductions based on tax positions related to prior years		(7,449	)		(6,248	)		(3,296	)
Reductions due to settlements with taxing authorities		—			—			(764	)
Reductions due to statute of limitations lapse		(7,493	)		(15,740	)		(11,120	)
Balance at end of year		$63,001			$65,975			$80,862

We estimate that in the next twelve months, our gross uncertain tax positions, exclusive of interest, could decrease by as much as $11.8 million, as a result of the expiration of the statute of limitations.

During 2014, Nucor recognized $9.0 million of benefit in interest and penalties ($0.9 million of expense in 2013 and $2.1 million of expense in 2012). The interest and penalty expense is included in interest expense in the consolidated statements of earnings. As of December 31, 2014, Nucor had approximately $28.2 million of accrued interest and penalties related to uncertain tax positions ($37.2 million at December 31, 2013).

The Internal Revenue Service (IRS) is examining Nucor’s 2012 federal income tax return. Management believes that the Company has adequately provided for any adjustments that may arise from this audit. The 2011 and 2013 tax years are also open to examination by the IRS. U.S. federal income tax matters have been concluded for years through 2010. The Canada Revenue Agency is examining the 2012 Canadian returns for Harris Steel Group Inc. and certain related affiliates. Tax years 2009 through 2013 remain open to examination by other major taxing jurisdictions to which Nucor is subject (primarily Canada and other state and local jurisdictions).

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21. ACCUMULATED OTHER COMPREHENSIVE (LOSS) INCOME

The following tables reflect the changes in accumulated other comprehensive (loss) income by component:

	(in thousands)
	Gains and Losses  on Hedging  Derivatives			Foreign Currency  Gain (Loss)			Adjustment to  Early Retiree  Medical Plan			Total
December 31, 2013		$         —			$      (7,438	)		$  16,518			$        9,080
Other comprehensive income (loss) before reclassifications		(8,542	)		(141,530	)		(4,228	)		(154,300	)
Amounts reclassified from accumulated other comprehensive income (loss) into earnings(1)		542			—			(1,030	)		(488	)
Net current-period other comprehensive (loss) income		(8,000	)		(141,530	)		(5,258	)		(154,788	)
December 31, 2014		$  (8,000	)		$  (148,968	)		$  11,260			$  (145,708	)
	(in thousands)
	Gains and Losses  on Hedging  Derivatives			Foreign Currency  Gain (Loss)			Adjustment to  Early Retiree  Medical Plan			Total
December 31, 2012		$          —			$  46,181			$  10,580			$  56,761
Other comprehensive income (loss) before reclassifications		—			(53,619)			5,938			(47,681	)
Amounts reclassified from accumulated other comprehensive (loss) income into earnings		—			—			—			—
Net current-period other comprehensive (loss) income		—			(53,619)			5,938			(47,681	)
December 31, 2013		$          —			$  (7,438)			$  16,518			$    9,080

(1) Includes $542 and ($1,030) net-of-tax impact of accumulated other comprehensive income reclassifications into cost of products sold for net losses on commodity contracts and adjustment to early retiree medical plan, respectively. The tax impacts of these reclassifications were $200 and ($557), respectively.

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22. EARNINGS PER SHARE

The computations of basic and diluted net earnings per share are as follows:

	(in thousands, except per share data)
Year Ended December 31,	2014			2013			2012
Basic net earnings per share:
Basic net earnings	$	713,946		$	488,025		$	504,619
Earnings allocated to participating securities		(2,321	)		(1,919	)		(1,713	)
Net earnings available to common stockholders	$	711,625		$	486,106		$	502,906
Average shares outstanding		319,838			319,077			318,172
Basic net earnings per share	$	2.22		$	1.52		$	1.58
Diluted net earnings per share:
Diluted net earnings	$	713,946		$	488,025		$	504,619
Earnings allocated to participating securities		(2,321	)		(1,919	)		(1,714	)
Net earnings available to common stockholders	$	711,625		$	486,106		$	502,905
Diluted average shares outstanding:
Basic shares outstanding		319,838			319,077			318,172
Dilutive effect of stock options and other		289			189			68
		320,127			319,266			318,240
Diluted net earnings per share	$	2.22		$	1.52		$	1.58

The following stock options were excluded from the computation of diluted net earnings per share because their effect would have been anti-dilutive:

	(shares in thousands)
Year Ended December 31,	2014		2013		2012
Anti-dilutive stock options:
Weighted average shares		—		137		801
Weighted average exercise price	$	—	$	44.51	$	42.07

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23. SEGMENTS

Nucor reports its results in the following segments: steel mills, steel products and raw materials. The steel mills segment includes carbon and alloy steel in sheet, bars, structural and plate; steel foundation distributors; steel trading businesses; rebar distribution businesses; and Nucor’s equity method investments in Duferdofin Nucor and NuMit. The steel products segment includes steel joists and joist girders, steel deck, fabricated concrete reinforcing steel, cold finished steel, steel fasteners, metal building systems, steel grating and expanded metal, and wire and wire mesh. The raw materials segment includes DJJ, primarily a scrap broker and processor; Nu-Iron Unlimited and Nucor Steel Louisiana, two facilities that produce DRI used by the steel mills; our natural gas working interests; and Nucor’s equity method investment in Hunter Ridge. Previously, Nucor’s steel trading businesses and rebar distribution businesses were reported in an “All other” category. Beginning in the first quarter of 2013, these businesses were reclassified to the steel mills segment as part of a realignment of Nucor’s reportable segments to better reflect the way in which they are managed. The segment data for the comparable periods has also been reclassified into the steel mills segment in order to conform to the current year presentation. The steel mills, steel products and raw materials segments are consistent with the way Nucor manages its business, which is primarily based upon the similarity of the types of products produced and sold by each segment. Additionally, the composition of assets by segment at December 31, 2012, was reclassified to conform with the current year presentation. This reclassification between segments did not have any impact on the consolidated asset balances.

Net interest expense, other income, profit sharing expense, stock-based compensation and changes in the LIFO reserve are shown under Corporate/eliminations. Corporate assets primarily include cash and cash equivalents, short-term investments, restricted cash and investments, allowances to eliminate intercompany profit in inventory, deferred income tax assets, federal and state income taxes receivable, the LIFO reserve and investments in and advances to affiliates.

      73      

Nucor’s results by segment are as follows:

	(in thousands)
Year Ended December 31,	2014			2013			2012
Net sales to external customers:
Steel mills		$14,723,642			$13,311,948			$13,781,797
Steel products		4,032,385			3,607,333			3,738,381
Raw materials		2,349,114			2,132,765			1,909,095
		$21,105,141			$19,052,046			$19,429,273
Intercompany sales:
Steel mills		$  2,904,317			$  2,563,554			$  2,609,411
Steel products		105,383			97,090			71,277
Raw materials		9,618,145			9,116,860			9,514,163
Corporate/eliminations		(12,627,845	)		(11,777,504	)		(12,194,851	)
		$               —			$               —			$               —
Depreciation expense:
Steel mills		$     366,568			$     332,258			$     366,182
Steel products		42,777			42,737			47,948
Raw materials		235,443			154,065			112,939
Corporate		7,212			6,792			6,941
		$     652,000			$     535,852			$     534,010
Amortization expense:
Steel mills		$       15,269			$       13,911			$         8,750
Steel products		27,644			31,082			35,152
Raw materials		29,510			29,363			29,109
		$       72,423			$       74,356			$       73,011
Earnings (loss) before income taxes and noncontrolling interests:
Steel mills		$  1,594,352			$  1,156,715			$  1,162,270
Steel products		166,323			82,129			(17,140	)
Raw materials		(29,053	)		13,686			55,264
Corporate/eliminations		(527,045	)		(461,407	)		(347,454	)
		$  1,204,577			$     791,123			$     852,940
Segment assets:
Steel mills		$  9,097,576			$  8,365,023			$  7,894,974
Steel products		2,885,209			2,861,403			2,935,146
Raw materials		3,927,159			3,956,913			3,400,690
Corporate/eliminations		(294,017	)		19,944			(78,751	)
		$15,615,927			$15,203,283			$14,152,059
Capital expenditures:
Steel mills		$     343,767			$     589,621			$     369,463
Steel products		27,262			22,472			31,698
Raw materials		197,252			610,745			604,312
Corporate		586			7,580			13,861
		$     568,867			$  1,230,418			$  1,019,334

      74      

Net sales by product were as follows. Further product group breakdown is impracticable.

	(in thousands)
Year Ended December 31,	2014		2013		2012
Net sales to external customers:
Sheet		$  5,988,303		$  5,219,464		$  5,540,868
Bar		4,051,171		3,730,328		3,999,911
Structural		2,617,196		2,558,538		2,301,778
Plate		2,066,972		1,803,618		1,939,240
Steel products		4,032,385		3,607,333		3,738,381
Raw materials		2,349,114		2,132,765		1,909,095
		$21,105,141		$19,052,046		$19,429,273

24. QUARTERLY INFORMATION (UNAUDITED)

	(in thousands, except per share data)
Year Ended December 31,	First Quarter		Second Quarter		Third Quarter		Fourth Quarter
2014
Net sales		$5,108,444		$5,291,075		$5,701,869		$5,003,753
Gross margin(1)		377,202		415,867		599,586		513,871
Net earnings(2)		129,696		166,935		274,201		244,958
Net earnings attributable to Nucor stockholders(2)		111,031		147,041		245,447		210,427
Net earnings per share:
Basic		0.35		0.46		0.76		0.66
Diluted		0.35		0.46		0.76		0.65
2013
Net sales		$4,550,772		$4,665,588		$4,940,936		$4,894,750
Gross margin(3)		303,216		313,125		408,543		385,741
Net earnings(4)		110,728		106,270		178,115		190,416
Net earnings attributable to Nucor stockholders(4)		84,789		85,145		147,597		170,494
Net earnings per share:
Basic		0.26		0.27		0.46		0.53
Diluted		0.26		0.27		0.46		0.53

(1) Nucor incurred a LIFO charge of $14.5 million in the first quarter, no charge or credit recorded in the second quarter, a LIFO credit of $14.5 million in the third quarter and a LIFO credit of $57.3 million in the fourth quarter. Nucor incurred $8.9 million in inventory-related purchase accounting adjustments in the fourth quarter associated with the acquisition of Nucor Steel Gallatin. Also included in the fourth quarter results was Nucor Steel Louisiana’s operating loss of approximately $35 million that was classified as start-up costs, as that facility experienced an equipment failure that suspended production for almost the entire fourth quarter.

(2) First quarter results include a $12.8 million charge related to tax legislation changes in the state of New York and a $9.0 million pre-tax charge related to the disposal of assets within the steel mills segment. Third quarter results include a $12.5 million pre-tax charge related to the partial write-down of assets within the steel mills segment. Fourth quarter results include a $13.2 million out-of-period non-cash gain related to a correction to tax balances.

(3) Nucor incurred a LIFO charge of $18.0 million in the first quarter, no charge or credit recorded in the second quarter, a LIFO credit of $18.0 million in the third quarter and a LIFO charge of $17.4 million in the fourth quarter.

(4) Third quarter results included a net $14.0 million pre-tax charge related to a partial write-down of inventory and fixed asset balances associated with the collapse of a storage dome at Nucor Steel Louisiana in St. James Parish. The fourth quarter was impacted by an out-of-period non-cash gain of $21.3 million related to a correction to deferred tax balances.

        78               CORPORATE AND STOCK DATA  

CORPORATE OFFICE

1915 Rexford Road

Charlotte, North Carolina 28211

Phone 704/366-7000

Fax 704/362-4208

STOCK TRANSFERS

DIVIDEND DISBURSING

DIVIDEND REINVESTMENT

American Stock Transfer & Trust Company, LLC

6201 15th Avenue

Brooklyn, New York 11219

Phone 877/715-0504

Fax 718/236-2641

ANNUAL MEETING

The annual meeting of stockholders will be held at 10:00 a.m. on Thursday, May 14, 2015, at the Charlotte Marriott SouthPark, 2200 Rexford Road, Charlotte, NC.

STOCK LISTING

Nucor’s common stock is traded on the New York Stock Exchange under the symbol NUE. As of January 30, 2015, there were approximately 17,000 stockholders of record.

FORM 10-K

A copy of Nucor’s 2014 annual report filed with the Securities and Exchange Commission (SEC) on Form 10-K is available to stockholders upon request.

INTERNET ACCESS

Nucor’s annual report on Form 10-K, quarterly reports on Form 10-Q, current reports on Form 8-K and all amendments to these reports are available without charge through Nucor’s website, www.nucor.com, as soon as reasonably practicable after Nucor files these reports electronically with or furnishes them to the SEC. Additional information available on our website includes our Corporate Governance Principles, Board of Directors Committee Charters, Standards of Business Conduct and Ethics and Code of Ethics for Senior Financial Professionals as well as various other financial and statistical data.

STOCK PRICE AND DIVIDENDS PAID

	First     Quarter		Second     Quarter		Third     Quarter		Fourth     Quarter
2014
Stock price:
High		$53.40		$53.37		$58.76		$55.31
Low		46.39		48.72		49.03		47.27
Dividends paid		0.3700		0.3700		0.3700		0.3700
2013
Stock price:
High		$48.60		$47.40		$51.25		$54.73
Low		43.41		41.32		43.11		47.37
Dividends paid		0.3675		0.3675		0.3675		0.3675

STOCK PERFORMANCE

This graphic comparison assumes the investment of $100 in Nucor Corporation common stock, $100 in the S&P 500 Index and $100 in the S&P Steel Group Index, all at year end 2009. The resulting cumulative total return assumes that cash dividends were reinvested. Nucor common stock comprised 81% of the S&P Steel Group Index at year end 2014 (42% at year end 2009).

THIS ANNUAL REPORT HAS BEEN PRINTED ON RECYCLED PAPER.                

EX-21

Exhibit 21

Nucor Corporation

2014 Form 10-K

Subsidiaries

Subsidiary	State/Jurisdiction of Incorporation
Nucor Steel Auburn, Inc.	Delaware
Nucor Steel Birmingham, Inc.	Delaware
Nucor Steel Decatur, LLC.	Delaware
Nucor Steel Gallatin LLC	Kentucky
Nucor Steel Jackson, Inc.	Delaware
Nucor Steel Kankakee, Inc.	Delaware
Nucor Steel Kingman, LLC	Delaware
Nucor Steel Marion, Inc.	Delaware
Nucor Steel Memphis, Inc.	Delaware
Nucor Steel Seattle, Inc.	Delaware
Nucor Steel Tuscaloosa, Inc	Delaware
Nucor Steel Connecticut Inc.	Delaware
Nucor-Yamato Steel Company	Delaware
Nu-Iron Unlimited	Trinidad
Nucor Castrip Arkansas LLC	Delaware
Harris Steel Inc.	Delaware
Harris U.S. Holdings Inc	Delaware
Harris Steel ULC	Canada
Magnatrax Corporation	Delaware
The David J. Joseph Company	Delaware
Ambassador Steel Corporation	Indiana
Nucor Energy Holdings Inc	Delaware
Skyline Steel LLC	Delaware
Nucor Steel Louisiana LLC	Delaware

EX-23

Exhibit 23

Nucor Corporation

2014 Form 10-K

CONSENT OF INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM

We hereby consent to the incorporation by reference in the Registration Statements on Form S-8 (Numbers 333-196104, 333-108749, 333-108751 and 333-167070) and on Form S-3ASR (Number 333-198263) of Nucor Corporation of our report dated February 27, 2015 relating to the financial statements and the effectiveness of internal control over financial reporting, which appears in the Annual Report to Stockholders, which is incorporated in this Annual Report on Form 10-K. We also consent to the incorporation by reference of our report dated February 27, 2015 relating to the financial statement schedule, which appears in this Form 10-K.

/s/ PricewaterhouseCoopers LLP

Charlotte, North Carolina

February 27, 2015

EX-31

Exhibit 31

Nucor Corporation

2014 Form 10-K

NUCOR CORPORATION

Section 302 Certifications

I, John J. Ferriola, certify that:

1. I have reviewed this annual report on Form 10-K of Nucor Corporation;

2. Based on my knowledge, this report does not contain any untrue statement of a material fact or omit to state a material fact necessary to make the statements made, in light of the circumstances under which such statements were made, not misleading with respect to the period covered by this report;

3. Based on my knowledge, the financial statements, and other financial information included in this report, fairly present in all material respects the financial condition, results of operations and cash flows of the registrant as of, and for, the periods presented in this report;

4. The registrant’s other certifying officer and I are responsible for establishing and maintaining disclosure controls and procedures (as defined in Exchange Act Rules 13a-15(e) and 15d-15(e)) and internal control over financial reporting (as defined in Exchange Act Rules 13a-15(f) and 15d-15(f)) for the registrant and have:

a) Designed such disclosure controls and procedures, or caused such disclosure controls and procedures to be designed under our supervision, to ensure that material information relating to the registrant, including its consolidated subsidiaries, is made known to us by others within those entities, particularly during the period in which this report is being prepared;

b) Designed such internal control over financial reporting, or caused such internal control over financial reporting to be designed under our supervision, to provide reasonable assurance regarding the reliability of financial reporting and the preparation of financial statements for external purposes in accordance with generally accepted accounting principles;

c) Evaluated the effectiveness of the registrant’s disclosure controls and procedures and presented in this report our conclusions about the effectiveness of the disclosure controls and procedures, as of the end of the period covered by this report based on such evaluation; and

d) Disclosed in this report any change in the registrant’s internal control over financial reporting that occurred during the registrant’s most recent fiscal quarter (the registrant’s fourth fiscal quarter in the case of an annual report) that has materially affected, or is reasonably likely to materially affect, the registrant’s internal control over financial reporting; and

5. The registrant’s other certifying officer and I have disclosed, based on our most recent evaluation of internal control over financial reporting, to the registrant’s auditors and the audit committee of the registrant’s board of directors (or persons performing the equivalent functions):

a) All significant deficiencies and material weaknesses in the design or operation of internal control over financial reporting which are reasonably likely to adversely affect the registrant’s ability to record, process, summarize and report financial information; and

b) Any fraud, whether or not material, that involves management or other employees who have a significant role in the registrant’s internal control over financial reporting.

February 27, 2015	/s/ John J. Ferriola
	John J. Ferriola
	Chairman, Chief Executive Officer
	and President

EX-31.I

Exhibit 31(i)

Nucor Corporation

2014 Form 10-K

NUCOR CORPORATION

Section 302 Certifications

I, James D. Frias, certify that:

1. I have reviewed this annual report on Form 10-K of Nucor Corporation;

2. Based on my knowledge, this report does not contain any untrue statement of a material fact or omit to state a material fact necessary to make the statements made, in light of the circumstances under which such statements were made, not misleading with respect to the period covered by this report;

3. Based on my knowledge, the financial statements, and other financial information included in this report, fairly present in all material respects the financial condition, results of operations and cash flows of the registrant as of, and for, the periods presented in this report;

4. The registrant’s other certifying officer and I are responsible for establishing and maintaining disclosure controls and procedures (as defined in Exchange Act Rules 13a-15(e) and 15d-15(e)) and internal control over financial reporting (as defined in Exchange Act Rules 13a-15(f) and 15d-15(f)) for the registrant and have:

a) Designed such disclosure controls and procedures, or caused such disclosure controls and procedures to be designed under our supervision, to ensure that material information relating to the registrant, including its consolidated subsidiaries, is made known to us by others within those entities, particularly during the period in which this report is being prepared;

b) Designed such internal control over financial reporting, or caused such internal control over financial reporting to be designed under our supervision, to provide reasonable assurance regarding the reliability of financial reporting and the preparation of financial statements for external purposes in accordance with generally accepted accounting principles;

c) Evaluated the effectiveness of the registrant’s disclosure controls and procedures and presented in this report our conclusions about the effectiveness of the disclosure controls and procedures, as of the end of the period covered by this report based on such evaluation; and

d) Disclosed in this report any change in the registrant’s internal control over financial reporting that occurred during the registrant’s most recent fiscal quarter (the registrant’s fourth fiscal quarter in the case of an annual report) that has materially affected, or is reasonably likely to materially affect, the registrant’s internal control over financial reporting; and

5. The registrant’s other certifying officer and I have disclosed, based on our most recent evaluation of internal control over financial reporting, to the registrant’s auditors and the audit committee of the registrant’s board of directors (or persons performing the equivalent functions):

a) All significant deficiencies and material weaknesses in the design or operation of internal control over financial reporting which are reasonably likely to adversely affect the registrant’s ability to record, process, summarize and report financial information; and

b) Any fraud, whether or not material, that involves management or other employees who have a significant role in the registrant’s internal control over financial reporting.

February 27, 2015	/s/ James D. Frias
	James D. Frias
	Chief Financial Officer, Treasurer
	and Executive Vice President

EX-32

Exhibit 32

Nucor Corporation

2014 Form 10-K

Certification of Principal Executive Officer

Pursuant to 18 U.S.C. 1350

(Section 906 of the Sarbanes-Oxley Act of 2002)

In connection with the Annual Report of Nucor Corporation (the “Registrant”), on Form 10-K for the year ended December 31, 2014, as filed with the Securities and Exchange Commission (the “Report”), I, John J. Ferriola, Chairman, Chief Executive Officer and President (principal executive officer) of the Registrant, certify, pursuant to § 906 of the Sarbanes-Oxley Act of 2002 (18 U.S.C. § 1350), that to the best of my knowledge:

(1) The Report fully complies with the requirements of Section 13(a) or 15(d) of the Securities Exchange Act of 1934, as amended; and

(2) The information contained in the Report fairly presents, in all material respects, the financial condition and results of operations of the Registrant.

/s/ John J. Ferriola
Name:	John J. Ferriola
Date:	February 27, 2015

A signed original of this written statement required by Section 906, or other document authenticating, acknowledging, or otherwise adopting the signature that appears in typed form within the electronic version of this written statement required by Section 906, has been provided to the Company and will be retained by the Company and furnished to the Securities and Exchange Commission or its staff upon request.

The foregoing certification is being furnished to the Securities and Exchange Commission as an exhibit to the Form 10-K and shall not be considered filed as part of the Form 10-K.

EX-32.I

Exhibit 32(i)

Nucor Corporation

2014 Form 10-K

Certification of Principal Financial Officer

Pursuant to 18 U.S.C. 1350

(Section 906 of the Sarbanes-Oxley Act of 2002)

In connection with the Annual Report of Nucor Corporation (the “Registrant”), on Form 10-K for the year ended December 31, 2014, as filed with the Securities and Exchange Commission (the “Report”), I, James D. Frias, Chief Financial Officer, Treasurer and Executive Vice President (principal financial officer) of the Registrant, certify, pursuant to § 906 of the Sarbanes-Oxley Act of 2002 (18 U.S.C. § 1350), that to the best of my knowledge:

(1) The Report fully complies with the requirements of Section 13(a) or 15(d) of the Securities Exchange Act of 1934, as amended; and

(2) The information contained in the Report fairly presents, in all material respects, the financial condition and results of operations of the Registrant.

/s/ James D. Frias
Name:	James D. Frias
Date:	February 27, 2015

A signed original of this written statement required by Section 906, or other document authenticating, acknowledging, or otherwise adopting the signature that appears in typed form within the electronic version of this written statement required by Section 906, has been provided to the Company and will be retained by the Company and furnished to the Securities and Exchange Commission or its staff upon request.

The foregoing certification is being furnished to the Securities and Exchange Commission as an exhibit to the Form 10-K and shall not be considered filed as part of the Form 10-K.

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Debt and Other Financing Arrangements (Tables)

12 Months Ended

Dec. 31, 2014

Debt Disclosure [Abstract]

Schedule of Debt and Other Financing Arrangements

	(in thousands)
	December 31,
	2014			2013
Industrial revenue bonds:
0.17% to 0.24%, variable, due from 2015 to 2040	$	1,026,935		$	1,030,200
Notes, 5.75%, due 2017		600,000			600,000
Notes, 5.85%, due 2018		500,000			500,000
Notes, 4.125%, due 2022		600,000			600,000
Notes, 4.0%, due 2023		500,000			500,000
Notes, 6.40%, due 2037		650,000			650,000
Notes, 5.20%, due 2043		500,000			500,000
		4,376,935			4,380,200
Less current maturities		(16,335	)		(3,300	)
	$	4,360,600		$	4,376,900

XML

Short-term Investments - Additional Information (Detail) (USD $)	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Short-term Investments [Abstract]
Short-term investments held	$ 100,000,000	$ 28,191,000
Realized or unrealized gains or losses	$ 0	$ 0	$ 0
Contractual maturities year of all outstanding fixed term deposits	2015

XML

Quarterly Information (Unaudited) (Tables)

12 Months Ended

Dec. 31, 2014

Quarterly Financial Information Disclosure [Abstract]

Schedule of Quarterly Information

(in thousands, except per share data) Year Ended December 31, 2014
	First Quarter		Second Quarter		Third Quarter		Fourth Quarter
Net sales	$	5,108,444	$	5,291,075	$	5,701,869	$	5,003,753
Gross margin (1)		377,202		415,867		599,586		513,871
Net earnings (2)		129,696		166,935		274,201		244,958
Net earnings attributable to Nucor stockholders (2)		111,031		147,041		245,447		210,427
Net earnings per share:
Basic		0.35		0.46		0.76		0.66
Diluted		0.35		0.46		0.76		0.65
	(in thousands, except per share data) Year Ended December 31, 2013
	First Quarter		Second Quarter		Third Quarter		Fourth Quarter
Net sales	$	4,550,772	$	4,665,588	$	4,940,936	$	4,894,750
Gross margin (3)		303,216		313,125		408,543		385,741
Net earnings (4)		110,728		106,270		178,115		190,416
Net earnings attributable to Nucor stockholders (4)		84,789		85,145		147,597		170,494
Net earnings per share:
Basic		0.26		0.27		0.46		0.53
Diluted		0.26		0.27		0.46		0.53

(1) Nucor incurred a LIFO charge of $14.5 million in the first quarter, no charge or credit recorded in the second quarter, a LIFO credit of $14.5 million in the third quarter and a LIFO credit of $57.3 million in the fourth quarter. Nucor incurred $8.9 million in inventory-related purchase accounting adjustments in the fourth quarter associated with the acquisition of Nucor Steel Gallatin. Also included in the fourth quarter results was Nucor Steel Louisiana’s operating loss of approximately $35 million that was classified as start-up costs, as that facility experienced an equipment failure that suspended production for almost the entire fourth quarter.

(2) First quarter results include a $12.8 million charge related to tax legislation changes in the state of New York and a $9.0 million pre-tax charge related to the disposal of assets within the steel mills segment. Third quarter results include a $12.5 million pre-tax charge related to the partial write down of assets within the steel mills segment. Fourth quarter results include a $13.2 million out-of-period non-cash gain related to a correction to tax balances.

(3) Nucor incurred a LIFO charge of $18.0 million in the first quarter, no charge or credit recorded in the second quarter, a LIFO credit of $18.0 million in the third quarter and a LIFO charge of $17.4 million in the fourth quarter.

(4) Third quarter results included a net $14.0 million pre-tax charge related to a partial write down of inventory and fixed asset balances associated with the collapse of a storage dome at Nucor Steel Louisiana in St. James Parish. The fourth quarter was impacted by an out-of-period non-cash gain of $21.3 million related to a correction to deferred tax balances.

XML

Derivative Financial Instruments - Effect of Derivative Instruments on Consolidated Statements of Earnings (Detail) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Derivatives Not Designated as Hedging Instrument [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Amount of Gain or (Loss) Recognized in Earnings on Derivatives	$ 2,638	$ 4,734	$ 1,519
Cost of Products Sold [Member] | Commodity Contracts [Member] | Derivatives Not Designated as Hedging Instrument [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Amount of Gain or (Loss) Recognized in Earnings on Derivatives	1,890	4,622	1,321
Cost of Products Sold [Member] | Commodity Contracts [Member] | Derivatives Designated as Hedging Instrument [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Amount of Gain or (Loss), net of tax, Recognized in OCI on Derivatives (Effective Portion)	(8,542)		(2,264)
Amount of Gain or (Loss), net of tax, Reclassified from Accumulated OCI into Earnings on Derivatives (Effective Portion)	(542)		(42,515)
Amount of Gain or (Loss), net of tax, Recognized in Earnings on Derivatives (Ineffective Portion)			500
Cost of Products Sold [Member] | Foreign Exchange Contracts [Member] | Derivatives Not Designated as Hedging Instrument [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Amount of Gain or (Loss) Recognized in Earnings on Derivatives	$ 748	$ 112	$ 198

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Accounts Receivable - Additional Information (Detail) (USD $) In Millions, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Accounts Receivable, Net [Abstract]
Allowance for doubtful accounts receivable	$ 65.4	$ 58.3	$ 57.4

XML

Stock-Based Compensation - Schedule of Grant Date Fair Value Black-Scholes Option-Pricing Model Assumptions (Detail) (USD $)	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]
Exercise price	$ 50.63	$ 44.51	$ 35.76
Expected dividend yield	2.92%	3.30%	4.08%
Expected stock price volatility	45.00%	46.94%	48.99%
Risk-free interest rate	2.03%	1.51%	1.06%
Expected life (in years)	6 years 6 months	6 years 6 months	6 years 6 months

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Earnings Per Share (Tables)

12 Months Ended

Dec. 31, 2014

Earnings Per Share [Abstract]

Computations of Basic and Diluted Net Earnings Per Share

The computations of basic and diluted net earnings per share are as follows:

	(in thousands, except per share data)
	2014			2013			2012
Basic net earnings per share:
Basic net earnings	$	713,946		$	488,025		$	504,619
Earnings allocated to participating securities		(2,321	)		(1,919	)		(1,713	)
Net earnings available to common stockholders	$	711,625		$	486,106		$	502,906
Average shares outstanding		319,838			319,077			318,172
Basic net earnings per share	$	2.22		$	1.52		$	1.58
Diluted net earnings per share:
Diluted net earnings	$	713,946		$	488,025		$	504,619
Earnings allocated to participating securities		(2,321	)		(1,919	)		(1,714	)
Net earnings available to common stockholders	$	711,625		$	486,106		$	502,905
Diluted average shares outstanding:
Basic shares outstanding		319,838			319,077			318,172
Dilutive effect of stock options and other		289			189			68
		320,127			319,266			318,240
Diluted net earnings per share	$	2.22		$	1.52		$	1.58

Anti-Dilutive Stock Options

The following stock options were excluded from the computation of diluted net earnings per share because their effect would have been anti-dilutive (shares in thousands):

	2014		2013		2012
Anti-dilutive stock options:
Weighted-average shares		—		137		801
Weighted-average exercise price	$	—	$	44.51	$	42.07

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Quarterly Information (Unaudited)

12 Months Ended

Dec. 31, 2014

Quarterly Financial Information Disclosure [Abstract]

Quarterly Information (Unaudited)

24. Quarterly Information (Unaudited)

	(in thousands, except per share data) Year Ended December 31, 2014
	First Quarter		Second Quarter		Third Quarter		Fourth Quarter
Net sales	$	5,108,444	$	5,291,075	$	5,701,869	$	5,003,753
Gross margin (1)		377,202		415,867		599,586		513,871
Net earnings (2)		129,696		166,935		274,201		244,958
Net earnings attributable to Nucor stockholders (2)		111,031		147,041		245,447		210,427
Net earnings per share:
Basic		0.35		0.46		0.76		0.66
Diluted		0.35		0.46		0.76		0.65
	(in thousands, except per share data) Year Ended December 31, 2013
	First Quarter		Second Quarter		Third Quarter		Fourth Quarter
Net sales	$	4,550,772	$	4,665,588	$	4,940,936	$	4,894,750
Gross margin (3)		303,216		313,125		408,543		385,741
Net earnings (4)		110,728		106,270		178,115		190,416
Net earnings attributable to Nucor stockholders (4)		84,789		85,145		147,597		170,494
Net earnings per share:
Basic		0.26		0.27		0.46		0.53
Diluted		0.26		0.27		0.46		0.53

(1) Nucor incurred a LIFO charge of $14.5 million in the first quarter, no charge or credit recorded in the second quarter, a LIFO credit of $14.5 million in the third quarter and a LIFO credit of $57.3 million in the fourth quarter. Nucor incurred $8.9 million in inventory-related purchase accounting adjustments in the fourth quarter associated with the acquisition of Nucor Steel Gallatin. Also included in the fourth quarter results was Nucor Steel Louisiana’s operating loss of approximately $35 million that was classified as start-up costs, as that facility experienced an equipment failure that suspended production for almost the entire fourth quarter.

(2) First quarter results include a $12.8 million charge related to tax legislation changes in the state of New York and a $9.0 million pre-tax charge related to the disposal of assets within the steel mills segment. Third quarter results include a $12.5 million pre-tax charge related to the partial write down of assets within the steel mills segment. Fourth quarter results include a $13.2 million out-of-period non-cash gain related to a correction to tax balances.

(3) Nucor incurred a LIFO charge of $18.0 million in the first quarter, no charge or credit recorded in the second quarter, a LIFO credit of $18.0 million in the third quarter and a LIFO charge of $17.4 million in the fourth quarter.

(4) Third quarter results included a net $14.0 million pre-tax charge related to a partial write down of inventory and fixed asset balances associated with the collapse of a storage dome at Nucor Steel Louisiana in St. James Parish. The fourth quarter was impacted by an out-of-period non-cash gain of $21.3 million related to a correction to deferred tax balances.

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Stock-Based Compensation - Summary of Nucor's Restricted Stock Unit Activity (Detail) (USD $) In Thousands, except Per Share data, unless otherwise specified	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Restricted Stock Units [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Unvested at beginning of year, Shares	1,122	1,106	962
Granted, Shares	655	789	1,101
Vested, Shares	(752)	(762)	(915)
Canceled, Shares	(13)	(11)	(42)
Unvested at end of year, Shares	1,012	1,122	1,106
Unvested at beginning of year, Grant Date Fair Value	$ 42.51	$ 40.80	$ 46.09
Granted, Grant Date Fair Value	$ 50.63	$ 44.51	$ 35.76
Vested, Grant Date Fair Value	$ 44.90	$ 42.15	$ 40.36
Canceled, Grant Date Fair Value	$ 42.66	$ 39.08	$ 39.41
Unvested at end of year, Grant Date Fair Value	$ 45.98	$ 42.51	$ 40.80
Restricted Stock Units and Stock Options [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares reserved for future grants	11,851	10,486	11,839

XML

Fair Value Measurements - Additional Information (Detail) (USD $) In Billions, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013
Fair Value Disclosures [Abstract]
Fair value of short-term and long-term debt, including current maturities	$ 4.97	$ 4.61

XML

Income Taxes - Reconciliation of the Beginning and Ending Amounts of Unrecognized Tax Benefits (Detail) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Reconciliation of Unrecognized Tax Benefits, Excluding Amounts Pertaining to Examined Tax Returns [Roll Forward]
Balance at beginning of year	$ 65,975	$ 80,862	$ 80,897
Additions based on tax positions related to current year	6,295	4,849	9,456
Reductions based on tax positions related to current year		(55)	(132)
Additions based on tax positions related to prior years	5,673	2,307	5,821
Reductions based on tax positions related to prior years	(7,449)	(6,248)	(3,296)
Reductions due to settlements with taxing authorities			(764)
Reductions due to statute of limitations lapse	(7,493)	(15,740)	(11,120)
Balance at end of year	$ 63,001	$ 65,975	$ 80,862

XML

Property, Plant and Equipment - Schedule of Property, Plant and Equipment (Detail) (USD $) In Thousands, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	$ 12,453,553	$ 11,543,245
Less accumulated depreciation	(7,165,914)	(6,626,221)
Property, plant and equipment, net, total	5,287,639	4,917,024
Land and Improvements [Member]
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	576,511	555,309
Buildings and Improvements [Member]
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	1,018,342	941,379
Machinery and Equipment [Member]
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	10,080,640	9,159,151
Proved Oil and Gas Properties [Member]
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	584,466	487,033
Construction in Process and Equipment Deposits [Member]
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	$ 193,594	$ 400,373

XML

Stock-Based Compensation - Schedule of Stock Option Plans Activity (Detail) (USD $) In Thousands, except Per Share data, unless otherwise specified	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]
Outstanding at beginning of year, Shares	2,089	1,543	1,156
Granted, Shares	469	546	741
Exercised, Shares	(136)		(354)
Canceled, Shares	0	0	0
Outstanding at end of year, Shares	2,422	2,089	1,543
Options exercisable at end of year, Shares	1,263	1,012
Outstanding at beginning of year, Weighted - Average Exercise Price	$ 40.47	$ 39.03	$ 38.26
Granted, Weighted - Average Exercise Price	$ 50.63	$ 44.51	$ 35.76
Exercised, Weighted - Average Exercise Price	$ 41.30		$ 29.67
Canceled, Weighted - Average Exercise Price	$ 0	$ 0	$ 0
Outstanding at end of period, Weighted - Average Exercise Price	$ 42.39	$ 40.47	$ 39.03
Options exercisable at end of year, Weighted - Average Exercise Price	$ 40.40	$ 39.75

XML

Income Taxes - Additional Information (Detail) (USD $)	3 Months Ended		12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Income Tax Disclosure [Line Items]
Taxes computed at statutory rate			35.00%	35.00%	35.00%
Non-cash gain related to correction of tax balances	$ 13,200,000		$ 13,200,000
Non-cash gain related to correction of deferred tax balances		21,300,000		21,300,000
Current deferred tax assets	253,400,000	255,500,000	253,400,000	255,500,000
Current deferred tax Liabilities	13,100,000	14,600,000	13,100,000	14,600,000
Non-current deferred tax liabilities	779,300,000	676,200,000	779,300,000	676,200,000
Net federal, state and foreign income taxes paid (refund received)			398,700,000	64,800,000	313,500,000
Cumulative undistributed foreign earnings	194,000,000	222,400,000	194,000,000	222,400,000
Unrecognized tax benefits	63,001,000	65,975,000	63,001,000	65,975,000	80,862,000	80,897,000
Amount of unrecognized tax benefits affects effective tax rate	62,900,000	66,300,000	62,900,000	66,300,000
Estimate of possible decrease in gross uncertain tax positions, exclusive of interest, as a result of the expiration of the statute of limitations	11,800,000		11,800,000
Expense (benefit) for interest and penalties			9,000,000	900,000	2,100,000
Accrued interest and penalties related to uncertain tax positions	28,200,000	37,200,000	28,200,000	37,200,000
State and Local Jurisdiction [Member]
Income Tax Disclosure [Line Items]
State net operating loss carryforwards	462,800,000	824,000,000	462,800,000	824,000,000
Foreign Country [Member]
Income Tax Disclosure [Line Items]
Foreign net operating loss carryforwards	$ 44,900,000	$ 50,500,000	$ 44,900,000	$ 50,500,000
Maximum [Member] | State and Local Jurisdiction [Member]
Income Tax Disclosure [Line Items]
Unused net operating loss carryforward expiration year			2034
Maximum [Member] | Foreign Country [Member]
Income Tax Disclosure [Line Items]
Unused net operating loss carryforward expiration year			2033
Minimum [Member] | State and Local Jurisdiction [Member]
Income Tax Disclosure [Line Items]
Unused net operating loss carryforward expiration year			2015
Minimum [Member] | Foreign Country [Member]
Income Tax Disclosure [Line Items]
Unused net operating loss carryforward expiration year			2027

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Employee Benefit Plans - Additional Information (Detail) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Employee Benefit Plans [Line Items]
Profit Sharing and Retirement Savings Plan, plan expense	$ 110.1	$ 71.7	$ 77.7
Unfunded obligation	14.1	9.9
Benefit (expense) associated with early retiree medical plan	$ 0.6	$ 0.6	$ 1.9
Discount rate used to calculate expenses	3.80%	4.60%	3.70%
Health care cost trend rate	6.50%	6.60%	6.60%
Year that trend rate is projected to reach ultimate rate	2027
December 31, 2027 [Member]
Employee Benefit Plans [Line Items]
Health care cost trend rate	4.50%

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Income Taxes - Reconciliation of the Federal Statutory Tax Rate to Total Provisions (Detail)	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Income Tax Disclosure [Abstract]
Taxes computed at statutory rate	35.00%	35.00%	35.00%
State income taxes, net of federal income tax benefit	3.32%	0.02%	0.75%
Federal research credit	(0.27%)	(0.79%)
Domestic manufacturing deduction	(2.27%)	(1.74%)	(3.25%)
Equity in losses of foreign joint ventures	0.85%	1.36%	1.43%
Foreign rate differential	(0.93%)	(2.35%)	0.60%
Noncontrolling interests	(2.96%)	(4.32%)	(3.64%)
Out-of-period correction	(1.10%)	(2.57%)
Other, net	0.64%	1.38%	(0.43%)
Provision for income taxes	32.28%	25.99%	30.46%

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Stock-Based Compensation - Summary of Stock Options Outstanding (Detail) (USD $) In Thousands, except Per Share data, unless otherwise specified	12 Months Ended
	Dec. 31, 2014
$35.76 [Member]
Schedule Of Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding By Exercise Price [Line Items]
Exercise Price	$ 35.76
Options Outstanding	689
Options Exercisable	391
Weighted-Average Remaining Contractual Life	7 years 4 months 24 days
$41.43 [Member]
Schedule Of Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding By Exercise Price [Line Items]
Exercise Price	$ 41.43
Options Outstanding	242
Options Exercisable	242
Weighted-Average Remaining Contractual Life	5 years 4 months 24 days
$42.34 [Member]
Schedule Of Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding By Exercise Price [Line Items]
Exercise Price	$ 42.34
Options Outstanding	530
Options Exercisable	530
Weighted-Average Remaining Contractual Life	6 years 3 months 18 days
$44.51 [Member]
Schedule Of Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding By Exercise Price [Line Items]
Exercise Price	$ 44.51
Options Outstanding	506
Options Exercisable	80
Weighted-Average Remaining Contractual Life	8 years 4 months 24 days
$50.63 [Member]
Schedule Of Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding By Exercise Price [Line Items]
Exercise Price	$ 50.63
Options Outstanding	455
Options Exercisable	20
Weighted-Average Remaining Contractual Life	9 years
$35.76 - $50.63 [Member]
Schedule Of Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding By Exercise Price [Line Items]
Options Outstanding	2,422
Options Exercisable	1,263
Weighted-Average Remaining Contractual Life	7 years 6 months
$35.76 - $50.63 [Member] | Minimum [Member]
Schedule Of Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding By Exercise Price [Line Items]
Exercise Price	$ 35.76
$35.76 - $50.63 [Member] | Maximum [Member]
Schedule Of Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding By Exercise Price [Line Items]
Exercise Price	$ 50.63

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Derivative Financial Instruments - Additional Information (Detail)	Dec. 31, 2014 MMBTU
Derivative Instruments and Hedging Activities Disclosure [Abstract]
Notional amount of commodity derivatives	15,600,000

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Contingencies

12 Months Ended

Dec. 31, 2014

Commitments and Contingencies Disclosure [Abstract]

Contingencies

16. Contingencies

Nucor is subject to environmental laws and regulations established by federal, state and local authorities and, accordingly, makes provision for the estimated costs of compliance. Of the undiscounted total of $27.2 million of accrued environmental costs at December 31, 2014 ($22.9 million at December 31, 2013), $11.3 million was classified in accrued expenses and other current liabilities ($6.9 million at December 31, 2013) and $15.9 million was classified in deferred credits and other liabilities ($16.0 million at December 31, 2013). Inherent uncertainties exist in these estimates primarily due to unknown conditions, evolving remediation technology and changing governmental regulations and legal standards.

Nucor has been named, along with other major steel producers, as a co-defendant in several related antitrust class-action complaints filed by Standard Iron Works and other steel purchasers in the United States District Court for the Northern District of Illinois. The majority of these complaints were filed in September and October of 2008, with two additional complaints being filed in July and December of 2010. Two of these complaints have been voluntarily dismissed and are no longer pending. The plaintiffs allege that from April 1, 2005 through December 31, 2007, eight steel manufacturers, including Nucor, engaged in anticompetitive activities with respect to the production and sale of steel. The plaintiffs seek monetary and other relief. Five of the eight defendants have reached court approved settlements with the plaintiffs. Although we believe the plaintiffs’ claims are without merit, we will continue to vigorously defend against them, but we cannot at this time predict the outcome of this litigation or estimate the range of Nucor’s potential exposure and, consequently, have not recorded any reserves or contingencies related to this lawsuit.

On March 25, 2014, a jury in the U.S. District Court for the Southern District of Texas returned a verdict against Nucor and its co-defendants in an antitrust lawsuit brought by plaintiff MM Steel, LP, a steel plate service center located in Houston. The jury returned a verdict of $52.0 million in damages against all defendants jointly and severally. On June 1, 2014, pursuant to antitrust laws providing for treble damages, the court awarded a judgment to MM Steel jointly and severally against the defendants in an amount totaling $160.8 million after including costs and attorneys’ fees. The Company has appealed the judgment to the U.S. Court of Appeals for the Fifth Circuit, and believes that it has valid grounds to have the judgment vacated or reversed. The Company believes that the evidence against Nucor was insufficient to support any finding that Nucor was involved in a horizontal conspiracy. The Company believes that the trial court wrongly excluded relevant testimony of Nucor’s expert witness. The Company believes that the trial court erred in admitting hearsay evidence. Finally, the Company believes that the trial court did not sufficiently instruct the jury on applicable legal principles. As a result, the Company believes that the likelihood that the judgment will be affirmed is not probable, and, accordingly, it has not recorded any reserves or contingencies related to this legal matter. Although we are defending this lawsuit vigorously, its ultimate resolution is uncertain.

We are from time to time a party to various other lawsuits, claims and legal proceedings that arise in the ordinary course of business. With respect to all such lawsuits, claims and proceedings, we record reserves when it is probable a liability has been incurred and the amount of loss can be reasonably estimated. We do not believe that any of these proceedings, individually or in the aggregate, would be expected to have a material adverse effect on our results of operations, financial position or cash flows. Nucor maintains liability insurance for certain risks that is subject to certain self-insurance limits.

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Summary of Significant Accounting Policies - Additional Information (Detail)	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013
Accounting Policies [Abstract]
Cash equivalents original maturity period	Three months or less
Percentage of inventories valued using the last-in, first-out (LIFO)	43.00%	45.00%

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Stock-Based Compensation (Tables)

12 Months Ended

Dec. 31, 2014

Disclosure of Compensation Related Costs, Share-based Payments [Abstract]

Summary of Stock Option Plans Activity

A summary of activity under Nucor’s stock option plans is as follows:

	(shares in thousands)
	2014					2013				2012
	Shares			Weighted- Average Exercise Price		Shares		Weighted- Average Exercise Price		Shares			Weighted- Average Exercise Price
Number of shares under option:
Outstanding at beginning of year		2,089		$	40.47		1,543	$	39.03		1,156		$	38.26
Granted		469		$	50.63		546	$	44.51		741		$	35.76
Exercised		(136	)	$	41.30		—		—		(354	)	$	29.67
Canceled		—			—		—		—		—			—
Outstanding at end of year		2,422		$	42.39		2,089	$	40.47		1,543		$	39.03
Options exercisable at end of year		1,263		$	40.40		1,012	$	39.75		—			—

Summary of Stock Options Outstanding

The following table summarizes information about stock options outstanding at December 31, 2014:

					(shares in thousands)
Exercise Price	Options Outstanding		Options Exercisable		Weighted- Average Remaining Contractual Life
$35.76		689		391		7.4 years
$41.43		242		242		5.4 years
$42.34		530		530		6.3 years
$44.51		506		80		8.4 years
$50.63		455		20		9.0 years
$35.76 - $50.63		2,422		1,263		7.5 years

Schedule of Grant Date Fair Value Black-Scholes Option-Pricing Model Assumptions

The fair value was estimated using the Black-Scholes option-pricing model with the following assumptions:

	2014			2013			2012
Exercise price	$	50.63		$	44.51		$	35.76
Expected dividend yield		2.92	%		3.30	%		4.08	%
Expected stock price volatility		45.00	%		46.94	%		48.99	%
Risk-free interest rate		2.03	%		1.51	%		1.06	%
Expected life (in years)		6.5			6.5			6.5

Summary of Nucor's Restricted Stock Unit Activity

A summary of Nucor’s restricted stock unit activity is as follows:

	(shares in thousands)
	2014					2013					2012
	Shares			Grant Date Fair Value		Shares			Grant Date Fair Value		Shares			Grant Date Fair Value
Restricted stock units:
Unvested at beginning of year		1,122		$	42.51		1,106		$	40.80		962		$	46.09
Granted		655		$	50.63		789		$	44.51		1,101		$	35.76
Vested		(752	)	$	44.90		(762	)	$	42.15		(915	)	$	40.36
Canceled		(13	)	$	42.66		(11	)	$	39.08		(42	)	$	39.41
Unvested at end of year		1,012		$	45.98		1,122		$	42.51		1,106		$	40.80
Shares reserved for future grants (stock options and RSUs)		11,851					10,486					11,839

Summary of Nucor's Restricted Stock Activity under AIP and LTIP

A summary of Nucor’s restricted stock activity under the AIP and LTIP is as follows:

	(shares in thousands)
	2014					2013					2012
	Shares			Grant Date Fair Value		Shares			Grant Date Fair Value		Shares			Grant Date Fair Value
Restricted stock awards and units:
Unvested at beginning of year		73		$	45.49		72		$	43.72		94		$	42.46
Granted		127		$	50.35		122		$	47.36		122		$	42.20
Vested		(135	)	$	48.76		(121	)	$	46.32		(144	)	$	41.62
Canceled		—			—		—			—		—			—
Unvested at end of year		65		$	48.20		73		$	45.49		72		$	43.72
Shares reserved for future grants		1,111					1,238					1,360

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Stock-Based Compensation - Additional Information (Detail) (USD $) In Millions, except Per Share data, unless otherwise specified	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock options exercise prices as percentage of the market value on the date of the grant	100.00%
Total intrinsic value of options exercised	$ 2.0	$ 0	$ 4.3
Total aggregate intrinsic value of options	16.9
Total aggregate intrinsic value of option exercisable	11.0
Grant date fair value of options granted	$ 17.48	$ 15.03	$ 11.40
Compensation expenses for stock options	7.7	8.6	9.9
Restricted Stock [Member] | LTIP [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Portion of restricted stock award vesting on anniversary	0.333
Eligible age of officer for LTIP restricted stock award	55 years
Restricted Stock Units [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Unrecognized compensation expense related to stock	29.3
Weighted-average recognition period for unrecognized compensation expense related to stock (years)	2 years
Number of anniversaries of grant date upon which restricted stock units vest	3
Installments in which restricted stock units vest and are converted to common stock	3
Compensation expense	32.6	32.6	34.2
Total fair value of shares, vested	38.1	34.1	33.1
Restricted Stock Units [Member] | AIP [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Amount of annual incentive award payment participant can elect to defer	50.00%
Additional common stock units for election of deferred annual incentive award, percentage	25.00%
Stock Options [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock options vesting period	3 years
Stock options term, years	10 years
Unrecognized compensation expense related to stock	0.5
Weighted-average recognition period for unrecognized compensation expense related to stock (years)	2 years 4 months 24 days
Restricted Stock Units and Stock Options [Member] | AIP and LTIP [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Unrecognized compensation expense related to stock	0.8
Weighted-average recognition period for unrecognized compensation expense related to stock (years)	1 year 8 months 12 days
Compensation expense	6.1	6.3	6.6
Total fair value of shares, vested	$ 6.8	$ 5.7	$ 6.0

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Quarterly Information - Schedule of Quarterly Information (Unaudited) (Parenthetical) (Detail) (USD $) In Millions, unless otherwise specified	3 Months Ended								12 Months Ended
	Dec. 31, 2014	Oct. 04, 2014	Jul. 05, 2014	Apr. 05, 2014	Dec. 31, 2013	Sep. 28, 2013	Jun. 29, 2013	Mar. 30, 2013	Dec. 31, 2014	Dec. 31, 2013
Quarterly Financial Information [Line Items]
LIFO charges	$ (57.3)	$ (14.5)	$ 0	$ 14.5	$ 17.4	$ (18.0)	$ 0	$ 18.0
Charge related to tax legislation changes in New York				12.8
Non-cash gain related to correction of tax balances	13.2								13.2
Net pre-tax charge related to partial write down of inventory and fixed asset						14.0
Non-cash gain related to correction of deferred tax balances					21.3					21.3
Gallatin Steel Company [Member]
Quarterly Financial Information [Line Items]
Inventory related purchase accounting charges	8.9
Nucor Steel Louisiana [Member]
Quarterly Financial Information [Line Items]
Approximate operating loss	35
Steel Mills [Member]
Quarterly Financial Information [Line Items]
Charge related to the disposal of assets				9.0
Charge related to the partial write-down of assets		$ 12.5

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Property, Plant and Equipment (Tables)

12 Months Ended

Dec. 31, 2014

Property, Plant and Equipment [Abstract]

Schedule of Property, Plant and Equipment

(in thousands) December 31,
	2014			2013
Land and improvements	$	576,511		$	555,309
Buildings and improvements		1,018,342			941,379
Machinery and equipment		10,080,640			9,159,151
Proved oil and gas properties		584,466			487,033
Construction in process and equipment deposits		193,594			400,373
		12,453,553			11,543,245
Less accumulated depreciation		(7,165,914	)		(6,626,221	)
	$	5,287,639		$	4,917,024

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Acquisitions and Dispositions - Estimated Fair Values of Assets Acquired and Liabilities (Detail) (USD $) In Thousands, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012	Oct. 08, 2014	Jun. 20, 2012
Business Acquisition [Line Items]
Goodwill	$ 2,068,664	$ 1,973,608	$ 2,004,538
Gallatin Steel Company [Member]
Business Acquisition [Line Items]
Cash				48,957
Accounts receivable				82,291
Inventory				101,692
Other current assets				5,117
Property, plant and equipment				483,007
Goodwill				98,505
Other intangible assets				67,150
Other assets				2,762
Total assets acquired				889,481
Current liabilities				105,816
Long-term debt				2,093
Deferred credits and other liabilities				2,500
Total liabilities assumed				110,409
Net assets acquired				779,072
Skyline Steel LLC [Member]
Business Acquisition [Line Items]
Accounts receivable					128,004
Inventory					260,473
Other current assets					4,410
Property, plant and equipment					70,100
Goodwill					138,579
Other intangible assets					215,600
Total assets acquired					817,166
Current liabilities					137,654
Deferred credits and other liabilities					4,078
Total liabilities assumed					141,732
Net assets acquired					$ 675,434

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Debt and Other Financing Arrangements - Additional Information (Detail) (USD $)	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Oct. 31, 2014
Debt Instrument [Line Items]
Annual aggregate long-term debt maturities - 2015	$ 16,300,000
Annual aggregate long-term debt maturities - 2016	0
Annual aggregate long-term debt maturities - 2017	600,000,000
Annual aggregate long-term debt maturities - 2018	500,000,000
Annual aggregate long-term debt maturities - 2019	0
Annual aggregate long-term debt maturities - thereafter	3,261,000,000
Issuance of Commercial Papers	151,400,000
Net proceeds of issuance of notes		991,500,000
Notes issuance cost		8,500,000
Ratio funded debt to total capital	36.00%
Harris Steel [Member]
Debt Instrument [Line Items]
Credit facility availability	30,200,000
Credit facilities, amount outstanding	1,500,000	0
Nucor Trading S.A. [Member]
Debt Instrument [Line Items]
Credit facilities, amount outstanding	54,600,000	29,200,000
Additional line of credit facility guaranteed	38,500,000	29,100,000
Revolving Credit Facility [Member]
Debt Instrument [Line Items]
Credit facility availability	1,500,000,000	1,500,000,000
Unsecured revolving credit facility, Expiration date	2018-08
Credit facility availability	500,000,000
Ratio on the limit of funded debt to capital on credit facility	60.00%
Credit facilities, amount outstanding	0	0
Letter of Credit [Member] | Nucor Trading S.A. [Member]
Debt Instrument [Line Items]
Credit facilities, amount outstanding	42,200,000
Scenario, Previously Reported [Member] | Revolving Credit Facility [Member]
Debt Instrument [Line Items]
Unsecured revolving credit facility, Expiration date	2016-12
Commercial Paper [Member]
Debt Instrument [Line Items]
Weighted average interest rate	0.30%
Foreign Currency Loans [Member] | Revolving Credit Facility [Member]
Debt Instrument [Line Items]
Credit facility availability	850,000,000
Letter of Credit [Member] | Revolving Credit Facility [Member]
Debt Instrument [Line Items]
Credit facility availability	500,000,000
Revolving Loans For Nucor Subsidiaries [Member] | Revolving Credit Facility [Member]
Debt Instrument [Line Items]
Credit facility availability	500,000,000
Four Percent Notes Due Two Thousand Twenty Three [Member]
Debt Instrument [Line Items]
Notes issued		500,000,000
Notes interest rate		4.00%
Notes Maturity Date		2023
Five Point Two Zero Percent Notes Due Two Thousand Forty Three [Member]
Debt Instrument [Line Items]
Notes issued		500,000,000
Notes interest rate		5.20%
Notes Maturity Date		2043
Maximum [Member] | Commercial Paper [Member]
Debt Instrument [Line Items]
Debt instrument maturity	90 days
Gallatin [Member]
Debt Instrument [Line Items]
Issuance of Commercial Papers			$ 300,000,000

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Goodwill and Other Intangible Assets - Additional Information (Detail) (USD $)	12 Months Ended			3 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2014
Finite And Indefinite Lived Intangible Assets [Line Items]
Other changes	$ 26,663,000	$ (4,863,000)
Intangible asset amortization expense	72,400,000	74,400,000	73,000,000
Future amortization expense, in 2015	73,200,000			73,200,000
Future amortization expense, in 2016	71,500,000			71,500,000
Future amortization expense, in 2017	69,800,000			69,800,000
Future amortization expense, in 2018	66,100,000			66,100,000
Future amortization expense, in 2019	63,300,000			63,300,000
Impairment of goodwill	0	0	0
Increase in Goodwill Due to Correction of Deferred Tax [Member]
Finite And Indefinite Lived Intangible Assets [Line Items]
Other changes				$ 26,400,000
Minimum [Member]
Finite And Indefinite Lived Intangible Assets [Line Items]
Intangible assets, useful life	5 years
Maximum [Member]
Finite And Indefinite Lived Intangible Assets [Line Items]
Intangible assets, useful life	22 years

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Segments (Tables)

12 Months Ended

Dec. 31, 2014

Segment Reporting [Abstract]

Segments

Nucor’s results by segment are as follows (in thousands):

	Year Ended December 31,
	2014			2013			2012
Net sales to external customers:
Steel mills	$	14,723,642		$	13,311,948		$	13,781,797
Steel products		4,032,385			3,607,333			3,738,381
Raw materials		2,349,114			2,132,765			1,909,095
	$	21,105,141		$	19,052,046		$	19,429,273
Intercompany sales:
Steel mills	$	2,904,317		$	2,563,554		$	2,609,411
Steel products		105,383			97,090			71,277
Raw materials		9,618,145			9,116,860			9,514,163
Corporate/eliminations		(12,627,845	)		(11,777,504	)		(12,194,851	)
	$	—		$	—		$	—
Depreciation expense:
Steel mills	$	366,568		$	332,258		$	366,182
Steel products		42,777			42,737			47,948
Raw materials		235,443			154,065			112,939
Corporate		7,212			6,792			6,941
	$	652,000		$	535,852		$	534,010
Amortization expense:
Steel mills	$	15,269		$	13,911		$	8,750
Steel products		27,644			31,082			35,152
Raw materials		29,510			29,363			29,109
	$	72,423		$	74,356		$	73,011
Earnings (loss) before income taxes and noncontrolling interests:
Steel mills	$	1,594,352		$	1,156,715		$	1,162,270
Steel products		166,323			82,129			(17,140	)
Raw materials		(29,053	)		13,686			55,264
Corporate/eliminations		(527,045	)		(461,407	)		(347,454	)
	$	1,204,577		$	791,123		$	852,940
Segment assets:
Steel mills	$	9,097,576		$	8,365,023		$	7,894,974
Steel products		2,885,209			2,861,403			2,935,146
Raw materials		3,927,159			3,956,913			3,400,690
Corporate/eliminations		(294,017	)		19,944			(78,751	)
	$	15,615,927		$	15,203,283		$	14,152,059
Capital expenditures:
Steel mills	$	343,767		$	589,621		$	369,463
Steel products		27,262			22,472			31,698
Raw materials		197,252			610,745			604,312
Corporate		586			7,580			13,861
	$	568,867		$	1,230,418		$	1,019,334

Schedule of Net Sale by Product to External Customers

Net sales by product were as follows (in thousands). Further product group breakdown is impracticable.

	Year Ended December 31,
	2014		2013		2012
Net sales to external customers:
Sheet	$	5,988,303	$	5,219,464	$	5,540,868
Bar		4,051,171		3,730,328		3,999,911
Structural		2,617,196		2,558,538		2,301,778
Plate		2,066,972		1,803,618		1,939,240
Steel products		4,032,385		3,607,333		3,738,381
Raw materials		2,349,114		2,132,765		1,909,095
	$	21,105,141	$	19,052,046	$	19,429,273

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Consolidated Statements of Cash Flows (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Operating activities:
Net earnings	$ 815,790	$ 585,529	$ 593,126
Adjustments:
Depreciation	652,000	535,852	534,010
Amortization	72,423	74,356	73,011
Stock-based compensation	46,384	47,450	50,733
Deferred income taxes	90,864	56,564	(25,274)
Distributions from affiliates	53,738	8,708
Equity in (earnings) losses of unconsolidated affiliates	(13,505)	(9,297)	13,323
Impairment of non-current assets			30,000
Loss on assets	25,393	14,000	17,563
Changes in assets and liabilities (exclusive of acquisitions and dispositions):
Accounts receivable	(179,181)	(103,649)	148,113
Inventories	(45,963)	(298,074)	(65,655)
Accounts payable	(111,859)	39,489	(111,496)
Federal income taxes	(111,687)	77,950	(28,022)
Salaries, wages and related accruals	67,973	7,155	(60,363)
Other operating activities	(19,472)	41,916	31,316
Cash provided by operating activities	1,342,898	1,077,949	1,200,385
Investing activities:
Capital expenditures	(667,982)	(1,196,952)	(947,608)
Investment in and advances to affiliates	(97,841)	(85,053)	(180,472)
Repayment of advances to affiliates	122,000	54,500	65,446
Disposition of plant and equipment	36,563	34,097	51,063
Acquisitions (net of cash acquired)	(768,581)		(760,833)
Purchases of investments	(100,000)	(19,349)	(409,403)
Proceeds from the sale of investments	27,529	92,761	1,667,142
Proceeds from the sale of restricted investments		148,725	359,295
Changes in restricted cash		126,438	(48,625)
Other investing activities	10,250	4,863
Cash used in investing activities	(1,438,062)	(839,970)	(203,995)
Financing activities:
Net change in short-term debt	178,308	(671)	27,945
Repayment of long-term debt	(5,358)	(250,000)	(650,000)
Proceeds from issuance of long-term debt, net of discount		999,100
Bond issuance costs		(7,625)
Issuance of common stock	5,614		10,515
Excess tax benefits from stock-based compensation	3,400	2,955	4,700
Distributions to noncontrolling interests	(63,705)	(76,798)	(74,848)
Cash dividends	(475,123)	(471,028)	(466,361)
Other financing activities	(2,183)	111	1,172
Cash (used in) provided by financing activities	(359,047)	196,044	(1,146,877)
Effect of exchange rate changes on cash	(4,897)	(3,633)	2,704
(Decrease) increase in cash and cash equivalents	(459,108)	430,390	(147,783)
Cash and cash equivalents-beginning of year	1,483,252	1,052,862	1,200,645
Cash and cash equivalents-end of year	1,024,144	1,483,252	1,052,862
Non-cash investing activity:
Change in accrued plant and equipment purchases	$ (99,115)	$ 33,467	$ 71,726

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Goodwill and Other Intangible Assets - Schedule of Intangible Assets (Detail) (USD $) In Thousands, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013
Finite-Lived Intangible Assets [Line Items]
Intangible assets, Gross Amount	$ 1,381,349	$ 1,320,987
Intangible assets, Accumulated Amortization	519,256	446,833
Customer Relationships [Member]
Finite-Lived Intangible Assets [Line Items]
Intangible assets, Gross Amount	1,199,942	1,147,786
Intangible assets, Accumulated Amortization	454,353	391,254
Trademarks and Trade Names [Member]
Finite-Lived Intangible Assets [Line Items]
Intangible assets, Gross Amount	158,584	151,332
Intangible assets, Accumulated Amortization	48,356	40,397
Other [Member]
Finite-Lived Intangible Assets [Line Items]
Intangible assets, Gross Amount	22,823	21,869
Intangible assets, Accumulated Amortization	$ 16,547	$ 15,182

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Interest Expense (Income) (Tables)

12 Months Ended

Dec. 31, 2014

Interest Revenue (Expense), Net [Abstract]

Schedule of Components of Interest Expense, Net

The components of net interest expense are as follows (in thousands):

	Year Ended December 31,
	2014			2013			2012
Interest expense	$	174,142		$	151,986		$	173,503
Interest income		(4,886	)		(5,091	)		(11,128	)
Interest expense, net	$	169,256		$	146,895		$	162,375

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Income Taxes

12 Months Ended

Dec. 31, 2014

Income Tax Disclosure [Abstract]

Income Taxes

20. Income Taxes

Components of earnings from continuing operations before income taxes and noncontrolling interests are as follows (in thousands):

Year Ended December 31,	2014		2013		2012
United States	$	1,161,953	$	755,921	$	854,705
Foreign		42,624		35,202		(1,765	)
	$	1,204,577	$	791,123	$	852,940

The provision for income taxes consists of the following (in thousands):

	Year Ended December 31,
	2014			2013			2012
Current:
Federal	$	247,898		$	138,343		$	261,552
State		30,790			223			20,337
Foreign		19,235			10,464			3,199
Total current		297,923			149,030			285,088
Deferred:
Federal		94,991			36,157			(23,052	)
State		3,958			(39	)		(10,440	)
Foreign		(8,085	)		20,446			8,218
Total deferred		90,864			56,564			(25,274	)
Total provision for income taxes	$	388,787		$	205,594		$	259,814

A reconciliation of the federal statutory tax rate (35%) to the total provision is as follows:

	Year Ended December 31,
	2014			2013			2012
Taxes computed at statutory rate		35.00	%		35.00	%		35.00	%
State income taxes, net of federal income tax benefit		3.32			0.02			0.75
Federal research credit		(0.27	)		(0.79	)		—
Domestic manufacturing deduction		(2.27	)		(1.74	)		(3.25	)
Equity in losses of foreign joint ventures		0.85			1.36			1.43
Foreign rate differential		(0.93	)		(2.35	)		0.60
Noncontrolling interests		(2.96	)		(4.32	)		(3.64	)
Out-of-period correction		(1.10	)		(2.57	)		—
Other, net		0.64			1.38			(0.43	)
Provision for income taxes		32.28	%		25.99	%		30.46	%

The 2014 provision included a $13.2 million out-of-period non-cash gain related to a correction to tax balances.The 2013 provision included a $21.3 million out-of-period non-cash gain related to a correction to the deferred tax balances. The out-of-period adjustments did not have a material impact in any previously reported periods.

Deferred tax assets and liabilities resulted from the following (in thousands):

	December 31,
	2014			2013
Deferred tax assets:
Accrued liabilities and reserves	$	154,381		$	102,933
Allowance for doubtful accounts		24,741			19,756
Inventory		189,120			206,826
Post-retirement benefits		898			6,268
Commodity hedges		4,773			—
Net operating loss carryforward		9,880			12,859
Tax credit carryforwards		29,142			56,185
Total deferred tax assets		412,935			404,827
Deferred tax liabilities:
Holdbacks and amounts not due under contracts		(14,945	)		(16,582	)
Cumulative translation adjustments		(1,819	)		(1,403	)
Commodity hedges		—			(805	)
Intangibles		(236,618	)		(210,791	)
Property, plant and equipment		(698,567	)		(610,451	)
Total deferred tax liabilities		(951,949	)		(840,032	)
Total net deferred tax liabilities	$	(539,014	)	$	(435,205	)

Current deferred tax assets included in other current assets were $253.4 million at December 31, 2014 ($255.5 million at December 31, 2013). Current deferred tax liabilities included in other current liabilities were $13.1 million at December 31, 2014 ($14.6 million at December 31, 2013). Non-current deferred tax liabilities included in deferred credits and other liabilities were $779.3 million at December 31, 2014 ($676.2 million at December 31, 2013). Nucor paid $398.7 million in net federal, state and foreign income taxes in 2014 ($64.8 million and $313.5 million in 2013 and 2012, respectively).

Cumulative undistributed foreign earnings for which U.S. taxes have not been provided are included in consolidated retained earnings in the amount of $194.0 million at December 31, 2014 ($222.4 million at December 31, 2013). These earnings are considered to be indefinitely reinvested and, accordingly, no provisions for U.S. federal and state income taxes are required. It is not practicable to determine the amount of unrecognized deferred tax liability related to the unremitted earnings.

State net operating loss carryforwards were $462.8 million at December 31, 2014 ($824.0 million at December 31, 2013). If unused, they will expire between 2015 and 2034. The majority of this change is due to a modification in a state filing method. Foreign net operating loss carryforwards were $44.9 million at December 31, 2014 ($50.5 million at December 31, 2013). If unused, they will expire between 2027 and 2033.

At December 31, 2014, Nucor had approximately $63.0 million of unrecognized tax benefits, of which $62.9 million would affect Nucor’s effective tax rate, if recognized. At December 31, 2013, Nucor had approximately $66.0 million of unrecognized tax benefits, of which $66.3 million would affect Nucor’s effective tax rate, if recognized.

A reconciliation of the beginning and ending amounts of unrecognized tax benefits recorded in deferred credits and other liabilities is as follows (in thousands):

	December 31,
	2014			2013			2012
Balance at beginning of year	$	65,975		$	80,862		$	80,897
Additions based on tax positions related to current year		6,295			4,849			9,456
Reductions based on tax positions related to current year		—			(55	)		(132	)
Additions based on tax positions related to prior years		5,673			2,307			5,821
Reductions based on tax positions related to prior years		(7,449	)		(6,248	)		(3,296	)
Reductions due to settlements with taxing authorities		—			—			(764	)
Reductions due to statute of limitations lapse		(7,493	)		(15,740	)		(11,120	)
Balance at end of year	$	63,001		$	65,975		$	80,862

We estimate that in the next twelve months, our gross uncertain tax positions, exclusive of interest, could decrease by as much as $11.8 million, as a result of the expiration of the statute of limitations.

During 2014, Nucor recognized $9.0 million of benefit in interest and penalties ($0.9 million of expense in 2013 and $2.1 million of expense in 2012). The interest and penalty expense is included in interest expense in the consolidated statements of earnings. As of December 31, 2014, Nucor had approximately $28.2 million of accrued interest and penalties related to uncertain tax positions ($37.2 million at December 31, 2013).

The Internal Revenue Service (IRS) is examining Nucor’s 2012 federal income tax return. Management believes that the Company has adequately provided for any adjustments that may arise from this audit. The 2011 and 2013 tax years are also open to examination by the IRS. U.S. federal income tax matters have been concluded for years through 2010. The Canada Revenue Agency is examining the 2012 Canadian returns for Harris Steel Group Inc. and certain related affiliates. Tax years 2009 through 2013 remain open to examination by other major taxing jurisdictions to which Nucor is subject (primarily Canada and other state and local jurisdictions).

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Interest Expense (Income)

12 Months Ended

Dec. 31, 2014

Interest Revenue (Expense), Net [Abstract]

Interest Expense (Income)

19. Interest Expense (Income)

The components of net interest expense are as follows (in thousands):

	Year Ended December 31,
	2014			2013			2012
Interest expense	$	174,142		$	151,986		$	173,503
Interest income		(4,886	)		(5,091	)		(11,128	)
Interest expense, net	$	169,256		$	146,895		$	162,375

Interest paid was $180.5 million in 2014 ($141.2 million in 2013 and $178.0 million in 2012).

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Inventory - Additional Information (Detail) (USD $) In Millions, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013
Inventory Disclosure [Abstract]
Raw materials and supplies in inventory, percentage	40.00%	40.00%
Finished and semi-finished products in inventory, percentage	60.00%	60.00%
Increased value of inventory if FIFO method had been used	$ 567.4	$ 624.7
Lower of cost or market adjustments	$ 2.7	$ 2.1

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Income Taxes (Tables)

12 Months Ended

Dec. 31, 2014

Income Tax Disclosure [Abstract]

Components of Earnings from Continuing Operations Before Income Taxes and Noncontrolling Interests

Components of earnings from continuing operations before income taxes and noncontrolling interests are as follows (in thousands):

Year Ended December 31,	2014		2013		2012
United States	$	1,161,953	$	755,921	$	854,705
Foreign		42,624		35,202		(1,765	)
	$	1,204,577	$	791,123	$	852,940

Provision for Income Taxes

The provision for income taxes consists of the following (in thousands):

	Year Ended December 31,
	2014			2013			2012
Current:
Federal	$	247,898		$	138,343		$	261,552
State		30,790			223			20,337
Foreign		19,235			10,464			3,199
Total current		297,923			149,030			285,088
Deferred:
Federal		94,991			36,157			(23,052	)
State		3,958			(39	)		(10,440	)
Foreign		(8,085	)		20,446			8,218
Total deferred		90,864			56,564			(25,274	)
Total provision for income taxes	$	388,787		$	205,594		$	259,814

Reconciliation of the Federal Statutory Tax Rate to Total Provisions

A reconciliation of the federal statutory tax rate (35%) to the total provision is as follows:

	Year Ended December 31,
	2014			2013			2012
Taxes computed at statutory rate		35.00	%		35.00	%		35.00	%
State income taxes, net of federal income tax benefit		3.32			0.02			0.75
Federal research credit		(0.27	)		(0.79	)		—
Domestic manufacturing deduction		(2.27	)		(1.74	)		(3.25	)
Equity in losses of foreign joint ventures		0.85			1.36			1.43
Foreign rate differential		(0.93	)		(2.35	)		0.60
Noncontrolling interests		(2.96	)		(4.32	)		(3.64	)
Out-of-period correction		(1.10	)		(2.57	)		—
Other, net		0.64			1.38			(0.43	)
Provision for income taxes		32.28	%		25.99	%		30.46	%

Deferred Tax Assets and Liabilities

Deferred tax assets and liabilities resulted from the following (in thousands):

	December 31,
	2014			2013
Deferred tax assets:
Accrued liabilities and reserves	$	154,381		$	102,933
Allowance for doubtful accounts		24,741			19,756
Inventory		189,120			206,826
Post-retirement benefits		898			6,268
Commodity hedges		4,773			—
Net operating loss carryforward		9,880			12,859
Tax credit carryforwards		29,142			56,185
Total deferred tax assets		412,935			404,827
Deferred tax liabilities:
Holdbacks and amounts not due under contracts		(14,945	)		(16,582	)
Cumulative translation adjustments		(1,819	)		(1,403	)
Commodity hedges		—			(805	)
Intangibles		(236,618	)		(210,791	)
Property, plant and equipment		(698,567	)		(610,451	)
Total deferred tax liabilities		(951,949	)		(840,032	)
Total net deferred tax liabilities	$	(539,014	)	$	(435,205	)

Reconciliation of the Beginning and Ending Amounts of Unrecognized Tax Benefits

A reconciliation of the beginning and ending amounts of unrecognized tax benefits recorded in deferred credits and other liabilities is as follows (in thousands):

	December 31,
	2014			2013			2012
Balance at beginning of year	$	65,975		$	80,862		$	80,897
Additions based on tax positions related to current year		6,295			4,849			9,456
Reductions based on tax positions related to current year		—			(55	)		(132	)
Additions based on tax positions related to prior years		5,673			2,307			5,821
Reductions based on tax positions related to prior years		(7,449	)		(6,248	)		(3,296	)
Reductions due to settlements with taxing authorities		—			—			(764	)
Reductions due to statute of limitations lapse		(7,493	)		(15,740	)		(11,120	)
Balance at end of year	$	63,001		$	65,975		$	80,862

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Accumulated Other Comprehensive (Loss) Income

12 Months Ended

Dec. 31, 2014

Accumulated Other Comprehensive Income (Loss), Net of Tax [Abstract]

Accumulated Other Comprehensive (Loss) Income

21. Accumulated Other Comprehensive (Loss) Income

The following tables reflect the changes in accumulated other comprehensive (loss) income by component (in thousands):

	Gains and Losses on Hedging Derivatives			Foreign Currency Gain (Loss)			Adjustment to Early Retiree Medical Plan			Total
December 31, 2013	$	—		$	(7,438	)	$	16,518		$	9,080
Other comprehensive income (loss) before reclassifications		(8,542	)		(141,530	)		(4,228	)		(154,300	)
Amounts reclassified from accumulated other comprehensive (loss) income into earnings (1)		542			—			(1,030	)		(488	)
Net current-period other comprehensive (loss) income		(8,000	)		(141,530	)		(5,258	)		(154,788	)
December 31, 2014	$	(8,000	)	$	(148,968	)	$	11,260		$	(145,708	)
	Gains and Losses on Hedging Derivatives			Foreign Currency Gain (Loss)			Adjustment to Early Retiree Medical Plan			Total
December 31, 2012	$	—		$	46,181		$	10,580		$	56,761
Other comprehensive income (loss) before reclassifications		—			(53,619	)		5,938			(47,681	)
Amounts reclassified from accumulated other comprehensive (loss) income into earnings		—			—			—			—
Net current-period other comprehensive (loss) income		—			(53,619	)		5,938			(47,681	)
December 31, 2013	$	—		$	(7,438	)	$	16,518		$	9,080

(1) Includes $542 and ($1,030) net-of-tax impact of accumulated other comprehensive income reclassifications into cost of products sold for net losses on commodity contracts and adjustment to early retiree medical plan, respectively. The tax impacts of these reclassifications were $200 and ($557), respectively.

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Earnings Per Share

12 Months Ended

Dec. 31, 2014

Earnings Per Share [Abstract]

Earnings Per Share

22. Earnings Per Share

The computations of basic and diluted net earnings per share are as follows:

	(in thousands, except per share data)
	2014			2013			2012
Basic net earnings per share:
Basic net earnings	$	713,946		$	488,025		$	504,619
Earnings allocated to participating securities		(2,321	)		(1,919	)		(1,713	)
Net earnings available to common stockholders	$	711,625		$	486,106		$	502,906
Average shares outstanding		319,838			319,077			318,172
Basic net earnings per share	$	2.22		$	1.52		$	1.58
Diluted net earnings per share:
Diluted net earnings	$	713,946		$	488,025		$	504,619
Earnings allocated to participating securities		(2,321	)		(1,919	)		(1,714	)
Net earnings available to common stockholders	$	711,625		$	486,106		$	502,905
Diluted average shares outstanding:
Basic shares outstanding		319,838			319,077			318,172
Dilutive effect of stock options and other		289			189			68
		320,127			319,266			318,240
Diluted net earnings per share	$	2.22		$	1.52		$	1.58

The following stock options were excluded from the computation of diluted net earnings per share because their effect would have been anti-dilutive (shares in thousands):

	2014		2013		2012
Anti-dilutive stock options:
Weighted-average shares		—		137		801
Weighted-average exercise price	$	—	$	44.51	$	42.07

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Consolidated Statements Of Stockholders' Equity (Parenthetical) (USD $)	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Statement of Stockholders' Equity [Abstract]
Cash dividends per share	$ 1.4825	$ 1.4725	$ 1.4625

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Segments

12 Months Ended

Dec. 31, 2014

Segment Reporting [Abstract]

Segments

23. Segments

Nucor reports its results in the following segments: steel mills, steel products and raw materials. The steel mills segment includes carbon and alloy steel in sheet, bars, structural and plate; steel foundation distributors; steel trading businesses; rebar distribution businesses; and Nucor’s equity method investments in Duferdofin Nucor and NuMit. The steel products segment includes steel joists and joist girders, steel deck, fabricated concrete reinforcing steel, cold finished steel, steel fasteners, metal building systems, steel grating and expanded metal, and wire and wire mesh. The raw materials segment includes DJJ, primarily a scrap broker and processor; Nu-Iron Unlimited and Nucor Steel Louisiana, two facilities that produce DRI used by the steel mills; our natural gas working interests; and Nucor’s equity method investment in Hunter Ridge. Previously, Nucor’s steel trading businesses and rebar distribution businesses were reported in an “All other” category. Beginning in the first quarter of 2013, these businesses were reclassified to the steel mills segment as part of a realignment of Nucor’s reportable segments to better reflect the way in which they are managed. The segment data for the comparable periods has also been reclassified into the steel mills segment in order to conform to the current year presentation. The steel mills, steel products and raw materials segments are consistent with the way Nucor manages its business, which is primarily based upon the similarity of the types of products produced and sold by each segment. Additionally, the composition of assets by segment at December 31, 2012, was reclassified to conform with the current year presentation. This reclassification between segments did not have any impact on the consolidated asset balances.

Net interest expense, other income, profit sharing expense, stock-based compensation and changes in the LIFO reserve are shown under Corporate/eliminations. Corporate assets primarily include cash and cash equivalents, short-term investments, restricted cash and investments, allowances to eliminate intercompany profit in inventory, deferred income tax assets, federal and state income taxes receivable, the LIFO reserve and investments in and advances to affiliates.

Nucor’s results by segment are as follows (in thousands):

	Year Ended December 31,
	2014			2013			2012
Net sales to external customers:
Steel mills	$	14,723,642		$	13,311,948		$	13,781,797
Steel products		4,032,385			3,607,333			3,738,381
Raw materials		2,349,114			2,132,765			1,909,095
	$	21,105,141		$	19,052,046		$	19,429,273
Intercompany sales:
Steel mills	$	2,904,317		$	2,563,554		$	2,609,411
Steel products		105,383			97,090			71,277
Raw materials		9,618,145			9,116,860			9,514,163
Corporate/eliminations		(12,627,845	)		(11,777,504	)		(12,194,851	)
	$	—		$	—		$	—
Depreciation expense:
Steel mills	$	366,568		$	332,258		$	366,182
Steel products		42,777			42,737			47,948
Raw materials		235,443			154,065			112,939
Corporate		7,212			6,792			6,941
	$	652,000		$	535,852		$	534,010
Amortization expense:
Steel mills	$	15,269		$	13,911		$	8,750
Steel products		27,644			31,082			35,152
Raw materials		29,510			29,363			29,109
	$	72,423		$	74,356		$	73,011
Earnings (loss) before income taxes and noncontrolling interests:
Steel mills	$	1,594,352		$	1,156,715		$	1,162,270
Steel products		166,323			82,129			(17,140	)
Raw materials		(29,053	)		13,686			55,264
Corporate/eliminations		(527,045	)		(461,407	)		(347,454	)
	$	1,204,577		$	791,123		$	852,940
Segment assets:
Steel mills	$	9,097,576		$	8,365,023		$	7,894,974
Steel products		2,885,209			2,861,403			2,935,146
Raw materials		3,927,159			3,956,913			3,400,690
Corporate/eliminations		(294,017	)		19,944			(78,751	)
	$	15,615,927		$	15,203,283		$	14,152,059
Capital expenditures:
Steel mills	$	343,767		$	589,621		$	369,463
Steel products		27,262			22,472			31,698
Raw materials		197,252			610,745			604,312
Corporate		586			7,580			13,861
	$	568,867		$	1,230,418		$	1,019,334

Net sales by product were as follows (in thousands). Further product group breakdown is impracticable.

	Year Ended December 31,
	2014		2013		2012
Net sales to external customers:
Sheet	$	5,988,303	$	5,219,464	$	5,540,868
Bar		4,051,171		3,730,328		3,999,911
Structural		2,617,196		2,558,538		2,301,778
Plate		2,066,972		1,803,618		1,939,240
Steel products		4,032,385		3,607,333		3,738,381
Raw materials		2,349,114		2,132,765		1,909,095
	$	21,105,141	$	19,052,046	$	19,429,273

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Interest Expense (Income) - Additional Information (Detail) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Interest Revenue (Expense), Net [Abstract]
Interest paid	$ 180.5	$ 141.2	$ 178.0

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Derivative Financial Instruments (Tables)

12 Months Ended

Dec. 31, 2014

Fair Values of Derivative Instruments

The following tables summarize information regarding Nucor’s derivative instruments (in thousands):

Fair Value of Derivative Instruments
		Fair Value at December 31,
	Consolidated Balance Sheet Location	2014			2013
Asset derivatives not designated as hedging instruments:
Commodity contracts	Other current assets	$	1,856		$	—
Foreign exchange contracts	Other current assets		372			—
Total asset derivatives		$	2,228		$	—
Liability derivatives designated as hedging instruments:
Commodity contracts	Accrued expenses and other current liabilities		(6,400	)		—
Commodity contracts	Deferred credits and other liabilities		(6,300	)		—
Total liability derivatives designated as hedging instruments			(12,700	)		—
Liability derivatives not designated as hedging instruments:
Commodity contracts	Accrued expenses and other current liabilities		—			(553	)
Foreign exchange contracts	Accrued expenses and other current liabilities		—			(2	)
Total liability derivatives not designated as hedging instruments			—			(555	)
Total liability derivatives		$	(12,700	)	$	(555	)

Derivatives Designated as Hedging Instrument [Member]

Effect of Derivative Instruments on Consolidated Statements of Earnings

The Effect of Derivative Instruments on the Consolidated Statements of Earnings

Derivatives Designated as Hedging Instruments (in thousands)

Derivatives in Cash Flow Hedging Relationships	Statement of Earnings Location	Amount of Gain or (Loss), net of tax, Recognized in OCI on Derivatives (Effective Portion)								Amount of Gain or (Loss), net of tax, Reclassified from Accumulated OCI into Earnings on Derivatives (Effective Portion)								Amount of Gain or (Loss), net of tax, Recognized in Earnings on Derivatives (Ineffective Portion)
		2014			2013		2012			2014			2013		2012			2014		2013		2012
Commodity contracts	Cost of products sold	$	(8,542	)	$	—	$	(2,264	)	$	(542	)	$	—	$	(42,515	)	$	—	$	—	$	500

Derivatives Not Designated as Hedging Instrument [Member]

Effect of Derivative Instruments on Consolidated Statements of Earnings

Derivatives Not Designated as Hedging Instruments (in thousands)
Derivatives Not Designated as Hedging Instruments	Statement of Earnings Location	Amount of Gain or (Loss) Recognized in Earnings  on Derivatives
		2014		2013		2012
Commodity contracts	Cost of products sold	$	1,890	$	4,622	$	1,321
Foreign exchange contracts	Cost of products sold		748		112		198
Total		$	2,638	$	4,734	$	1,519

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Acquisitions and Dispositions - Preliminary Purchase Price Allocation to Identifiable Intangible Assets (Detail) (USD $) In Thousands, unless otherwise specified	0 Months Ended
	Oct. 08, 2014	Jun. 20, 2012
Gallatin Steel Company [Member]
Acquired Finite-Lived Intangible Assets [Line Items]
Intangible assets	$ 67,150
Gallatin Steel Company [Member] | Customer Relationships [Member]
Acquired Finite-Lived Intangible Assets [Line Items]
Intangible assets	58,250
Weighted - Average Life	20 years
Gallatin Steel Company [Member] | Trademarks and Trade Names [Member]
Acquired Finite-Lived Intangible Assets [Line Items]
Intangible assets	8,900
Weighted - Average Life	5 years
Skyline Steel LLC [Member]
Acquired Finite-Lived Intangible Assets [Line Items]
Intangible assets		215,600
Skyline Steel LLC [Member] | Customer Relationships [Member]
Acquired Finite-Lived Intangible Assets [Line Items]
Intangible assets		184,500
Weighted - Average Life		17 years
Skyline Steel LLC [Member] | Trademarks and Trade Names [Member]
Acquired Finite-Lived Intangible Assets [Line Items]
Intangible assets		28,500
Weighted - Average Life		20 years
Skyline Steel LLC [Member] | Other [Member]
Acquired Finite-Lived Intangible Assets [Line Items]
Intangible assets		$ 2,600
Weighted - Average Life		3 years

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Fair Value Measurements - Schedule of Financial Assets and Financial Liabilities Measured at Fair Value (Detail) (USD $) In Thousands, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Short-term investments	$ 100,000	$ 28,191
Total assets	15,615,927	15,203,283	14,152,059
Foreign exchange and commodity contracts	(12,700)	(555)
Reported Value Measurement [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Cash equivalents	861,656	1,269,465
Short-term investments	100,000	28,191
Foreign exchange and commodity contracts	2,228
Total assets	963,884	1,297,656
Foreign exchange and commodity contracts	(12,700)	(555)
Quoted Prices in Active Markets for Identical Assets (Level 1) [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Cash equivalents		1,269,465
Short-term investments		28,191
Total assets		1,297,656
Quoted Prices in Active Markets for Identical Assets (Level 1) [Member] | Fair Value, Measurements, Recurring [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Cash equivalents	861,656
Short-term investments	100,000
Total assets	961,656
Significant Other Observable Inputs (Level 2) [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Foreign exchange and commodity contracts		(555)
Significant Other Observable Inputs (Level 2) [Member] | Fair Value, Measurements, Recurring [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Foreign exchange and commodity contracts	2,228
Total assets	2,228
Foreign exchange and commodity contracts	$ (12,700)

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Consolidated Balance Sheets (USD $) In Thousands, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013
Current assets:
Cash and cash equivalents (Note 15)	$ 1,024,144	$ 1,483,252
Short-term investments (Notes 4 and 15)	100,000	28,191
Accounts receivable, net (Note 5)	2,068,298	1,810,987
Inventories, net (Note 6)	2,745,032	2,605,609
Other current assets (Notes 10, 14 and 20)	504,414	482,007
Total current assets	6,441,888	6,410,046
Property, plant and equipment, net (Note 7)	5,287,639	4,917,024
Goodwill (Note 9)	2,068,664	1,973,608
Other intangible assets, net (Note 9)	862,093	874,154
Other assets (Note 10)	955,643	1,028,451
Total assets	15,615,927	15,203,283
Current liabilities:
Short-term debt (Notes 12 and 15)	207,476	29,202
Long-term debt due within one year (Notes 12 and 15)	16,335	3,300
Accounts payable (Note 11)	993,872	1,117,078
Salaries, wages and related accruals (Note 18)	352,488	282,860
Accrued expenses and other current liabilities (Notes 11, 14, 16 and 20)	527,605	527,776
Total current liabilities	2,097,776	1,960,216
Long-term debt due after one year (Notes 12 and 15)	4,360,600	4,376,900
Deferred credits and other liabilities (Notes 14, 16, 18 and 20)	1,082,433	955,889
Total liabilities	7,540,809	7,293,005
Commitments and contingencies (Notes 14 and 16)
Nucor stockholders' equity (Notes 13 and 17):
Common stock (800,000 shares authorized; 378,092 and 377,525 shares issued, respectively)	151,237	151,010
Additional paid-in capital	1,883,356	1,843,353
Retained earnings	7,378,214	7,140,440
Accumulated other comprehensive (loss) income, net of income taxes (Notes 2, 14 and 21)	(145,708)	9,080
Treasury stock (59,059 and 59,197 shares, respectively)	(1,494,629)	(1,498,114)
Total Nucor stockholders' equity	7,772,470	7,645,769
Noncontrolling interests	302,648	264,509
Total equity	8,075,118	7,910,278
Total liabilities and equity	$ 15,615,927	$ 15,203,283

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Accumulated Other Comprehensive (Loss) Income (Tables)

12 Months Ended

Dec. 31, 2014

Accumulated Other Comprehensive Income (Loss), Net of Tax [Abstract]

Components of Accumulated Other Comprehensive (Loss) Income

The following tables reflect the changes in accumulated other comprehensive (loss) income by component (in thousands):

	Gains and Losses on Hedging Derivatives			Foreign Currency Gain (Loss)			Adjustment to Early Retiree Medical Plan			Total
December 31, 2013	$	—		$	(7,438	)	$	16,518		$	9,080
Other comprehensive income (loss) before reclassifications		(8,542	)		(141,530	)		(4,228	)		(154,300	)
Amounts reclassified from accumulated other comprehensive (loss) income into earnings (1)		542			—			(1,030	)		(488	)
Net current-period other comprehensive (loss) income		(8,000	)		(141,530	)		(5,258	)		(154,788	)
December 31, 2014	$	(8,000	)	$	(148,968	)	$	11,260		$	(145,708	)
	Gains and Losses on Hedging Derivatives			Foreign Currency Gain (Loss)			Adjustment to Early Retiree Medical Plan			Total
December 31, 2012	$	—		$	46,181		$	10,580		$	56,761
Other comprehensive income (loss) before reclassifications		—			(53,619	)		5,938			(47,681	)
Amounts reclassified from accumulated other comprehensive (loss) income into earnings		—			—			—			—
Net current-period other comprehensive (loss) income		—			(53,619	)		5,938			(47,681	)
December 31, 2013	$	—		$	(7,438	)	$	16,518		$	9,080

(1) Includes $542 and ($1,030) net-of-tax impact of accumulated other comprehensive income reclassifications into cost of products sold for net losses on commodity contracts and adjustment to early retiree medical plan, respectively. The tax impacts of these reclassifications were $200 and ($557), respectively.

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Quarterly Information - Schedule of Quarterly Information (Unaudited) (Detail) (USD $) In Thousands, except Per Share data, unless otherwise specified	3 Months Ended								12 Months Ended
	Dec. 31, 2014	Oct. 04, 2014	Jul. 05, 2014	Apr. 05, 2014	Dec. 31, 2013	Sep. 28, 2013	Jun. 29, 2013	Mar. 30, 2013	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Quarterly Financial Information Disclosure [Abstract]
Net sales	$ 5,003,753	$ 5,701,869	$ 5,291,075	$ 5,108,444	$ 4,894,750	$ 4,940,936	$ 4,665,588	$ 4,550,772	$ 21,105,141	$ 19,052,046	$ 19,429,273
Gross margin	513,871	599,586	415,867	377,202	385,741	408,543	313,125	303,216
Net earnings	244,958	274,201	166,935	129,696	190,416	178,115	106,270	110,728	815,790	585,529	593,126
Net earnings attributable to Nucor stockholders	$ 210,427	$ 245,447	$ 147,041	$ 111,031	$ 170,494	$ 147,597	$ 85,145	$ 84,789	$ 713,946	$ 488,025	$ 504,619
Basic	$ 0.66	$ 0.76	$ 0.46	$ 0.35	$ 0.53	$ 0.46	$ 0.27	$ 0.26	$ 2.22	$ 1.52	$ 1.58
Diluted	$ 0.65	$ 0.76	$ 0.46	$ 0.35	$ 0.53	$ 0.46	$ 0.27	$ 0.26	$ 2.22	$ 1.52	$ 1.58

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Consolidated Statements of Comprehensive Income (Parenthetical) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Statement Of Comprehensive Income [Abstract]
Net unrealized gain (loss) on hedging derivatives, tax effect	$ (4,900)	$ 0	$ (1,100)
Reclassification adjustment for loss on settlement of hedging derivatives included in net earnings, net of income taxes	200	0	25,000
Foreign currency translation (loss) gain, tax effect	400	(600)	0
Adjustment to early retiree medical plan, income taxes	(1,921)	2,547	(1,528)
Reclassification adjustment for gain on early retiree medical plan included in net earnings, tax effect	$ (557)	$ 0	$ 0

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Segments - Segments (Detail) (USD $) In Thousands, unless otherwise specified	3 Months Ended								12 Months Ended
	Dec. 31, 2014	Oct. 04, 2014	Jul. 05, 2014	Apr. 05, 2014	Dec. 31, 2013	Sep. 28, 2013	Jun. 29, 2013	Mar. 30, 2013	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Segment Reporting Information [Line Items]
Net sales	$ 5,003,753	$ 5,701,869	$ 5,291,075	$ 5,108,444	$ 4,894,750	$ 4,940,936	$ 4,665,588	$ 4,550,772	$ 21,105,141	$ 19,052,046	$ 19,429,273
Earnings before income taxes and noncontrolling interests									1,204,577	791,123	852,940
Depreciation expense									652,000	535,852	534,010
Total assets	15,615,927				15,203,283				15,615,927	15,203,283	14,152,059
Amortization expense									72,423	74,356	73,011
Capital expenditures									568,867	1,230,418	1,019,334
Steel Mills [Member]
Segment Reporting Information [Line Items]
Earnings before income taxes and noncontrolling interests									1,594,352	1,156,715	1,162,270
Depreciation expense									366,568	332,258	366,182
Total assets	9,097,576				8,365,023				9,097,576	8,365,023	7,894,974
Amortization expense									15,269	13,911	8,750
Capital expenditures									343,767	589,621	369,463
Steel Products [Member]
Segment Reporting Information [Line Items]
Earnings before income taxes and noncontrolling interests									166,323	82,129	(17,140)
Depreciation expense									42,777	42,737	47,948
Total assets	2,885,209				2,861,403				2,885,209	2,861,403	2,935,146
Amortization expense									27,644	31,082	35,152
Capital expenditures									27,262	22,472	31,698
Raw Materials [Member]
Segment Reporting Information [Line Items]
Earnings before income taxes and noncontrolling interests									(29,053)	13,686	55,264
Depreciation expense									235,443	154,065	112,939
Total assets	3,927,159				3,956,913				3,927,159	3,956,913	3,400,690
Amortization expense									29,510	29,363	29,109
Capital expenditures									197,252	610,745	604,312
Net Sales to External Customers [Member]
Segment Reporting Information [Line Items]
Net sales									21,105,141	19,052,046	19,429,273
Net Sales to External Customers [Member] | Steel Mills [Member]
Segment Reporting Information [Line Items]
Net sales									14,723,642	13,311,948	13,781,797
Net Sales to External Customers [Member] | Steel Products [Member]
Segment Reporting Information [Line Items]
Net sales									4,032,385	3,607,333	3,738,381
Net Sales to External Customers [Member] | Raw Materials [Member]
Segment Reporting Information [Line Items]
Net sales									2,349,114	2,132,765	1,909,095
Intercompany Eliminations [Member]
Segment Reporting Information [Line Items]
Net sales
Intercompany Eliminations [Member] | Steel Mills [Member]
Segment Reporting Information [Line Items]
Net sales									2,904,317	2,563,554	2,609,411
Intercompany Eliminations [Member] | Steel Products [Member]
Segment Reporting Information [Line Items]
Net sales									105,383	97,090	71,277
Intercompany Eliminations [Member] | Raw Materials [Member]
Segment Reporting Information [Line Items]
Net sales									9,618,145	9,116,860	9,514,163
Intercompany Eliminations [Member] | Corporate/Eliminations [Member]
Segment Reporting Information [Line Items]
Net sales									(12,627,845)	(11,777,504)	(12,194,851)
Earnings before income taxes and noncontrolling interests									(527,045)	(461,407)	(347,454)
Total assets	(294,017)				19,944				(294,017)	19,944	(78,751)
Corporate [Member]
Segment Reporting Information [Line Items]
Depreciation expense									7,212	6,792	6,941
Capital expenditures									$ 586	$ 7,580	$ 13,861

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Restricted Cash and Investments - Additional Information (Detail) (USD $)	12 Months Ended		0 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Nov. 30, 2010	Dec. 31, 2014
Restricted Cash and Investments [Line Items]
Qualified expenditure for construction of facility	$ 275,300,000	$ 311,800,000
Restricted cash or investment	0			0
30-Year Variable Rate Gulf Opportunity Zone Bonds [Member]
Restricted Cash and Investments [Line Items]
Debt instrument face amount			$ 600,000,000
Term of variable rate bonds, years			30 years

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Summary of Significant Accounting Policies (Policies)

12 Months Ended

Dec. 31, 2014

Accounting Policies [Abstract]

Cash and Cash Equivalents

Cash and Cash Equivalents

Cash equivalents are recorded at cost plus accrued interest, which approximates fair value, and have original maturities of three months or less at the date of purchase. Cash and cash equivalents are maintained primarily with a few high-credit quality financial institutions.

Short-term Investments

Short-term Investments

Short-term investments are recorded at cost plus accrued interest, which approximates fair value. Unrealized gains and losses on investments classified as available-for-sale are recorded as a component of accumulated other comprehensive income (loss). Management determines the appropriate classification of its investments at the time of purchase and re-evaluates such determination at each balance sheet date.

Inventories Valuation

Inventories Valuation

Inventories are stated at the lower of cost or market. Inventories valued using the last-in, first-out (LIFO) method of accounting represent approximately 43% of total inventories as of December 31, 2014 (45% as of December 31, 2013). All inventories held by the parent company and Nucor-Yamato Steel Company are valued using the LIFO method of accounting except for supplies that are consumed indirectly in the production process, which are valued using the first-in, first-out (FIFO) method of accounting. All inventories held by other subsidiaries of the parent company are valued using the FIFO method of accounting. The Company records any amount required to reduce the carrying value of inventory to net realizable value as a charge to cost of products sold.

Property, Plant and Equipment

Property, Plant and Equipment

Property, plant and equipment are stated at cost, except for property, plant and equipment acquired through acquisitions which are recorded at acquisition date fair value. With the exception of our natural gas wells, depreciation is provided on a straight-line basis over the estimated useful lives of the assets. Depletion of all capitalized costs associated with our natural gas producing properties is expensed on a unit-of-production basis by individual field as the gas from the proved developed reserves is produced. The costs of planned major maintenance activities are capitalized as part of other current assets and amortized over the period until the next scheduled major maintenance activity. All other repairs and maintenance activities are expensed when incurred.

Goodwill and Other Intangibles

Goodwill and Other Intangibles

Goodwill is the excess of cost over the fair value of net assets of businesses acquired. Goodwill is not amortized but is tested annually for impairment and whenever events or circumstances change that would make it more likely than not that an impairment may have occurred. We perform our annual impairment analysis as of the first day of the fourth quarter each year. The evaluation of impairment involves comparing the current estimated fair value of each reporting unit, which is a level below the reportable segment, to the recorded value, including goodwill. When appropriate, Nucor performs a qualitative assessment to determine whether it is more likely than not that the fair value of a reporting unit is less than its carrying amount. For certain reporting units it is necessary to perform a quantitative analysis. In these instances, a discounted cash flow model is used to determine the current estimated fair value of these reporting units. A number of significant assumptions and estimates are involved in the application of the discounted cash flow model to forecast operating cash flows, including market growth and market share, sales volumes and prices, costs to produce, discount rate and estimated capital needs. Management considers historical experience and all available information at the time the fair values of its reporting units are estimated. Assumptions in estimating future cash flows are subject to a high degree of judgment and complexity. Changes in assumptions and estimates may affect the fair value of goodwill and could result in impairment charges in future periods.

Finite-lived intangible assets are amortized over their estimated useful lives.

Long-Lived Asset Impairments

Long-Lived Asset Impairments

We evaluate our property, plant and equipment and finite-lived intangible assets for potential impairment on an individual asset basis or at the lowest level asset grouping for which cash flows can be separately identified. Asset impairments are assessed whenever circumstances indicate that the carrying amounts of those productive assets could exceed their projected undiscounted cash flows. When it is determined that impairment exists, the related assets are written down to estimated fair market value.

Equity Method Investments

Equity Method Investments

Investments in joint ventures in which Nucor shares control over the financial and operating decisions but in which Nucor is not the primary beneficiary are accounted for under the equity method. Each of the Company’s equity method investments is subject to a review for impairment if, and when, circumstances indicate that a decline in value below its carrying amount may have occurred. Examples of such circumstances include, but are not limited to, a significant deterioration in the earnings performance or business prospects of the investee; a significant adverse change in the regulatory, economic or technological environment of the investee; a significant adverse change in the general market condition of either the geographic area or the industry in which the investee operates; and recurring negative cash flows from operations. If management considers the decline to be other than temporary, the Company would write down the investment to its estimated fair market value.

Derivative Financial Instruments

Derivative Financial Instruments

Nucor uses derivative financial instruments from time to time primarily to partially manage its exposure to price risk related to natural gas purchases used in the production process and to changes in interest rates on outstanding debt instruments. Nucor also uses derivatives to hedge a portion of our scrap, copper and aluminum purchases and sales. In addition, Nucor uses forward foreign exchange contracts to hedge cash flows associated with certain assets and liabilities, firm commitments and anticipated transactions.

Nucor recognizes all material derivative instruments in the consolidated balance sheets at fair value. Amounts included in accumulated other comprehensive income (loss) related to cash flow hedges are reclassified into earnings when the underlying transaction is recognized in net earnings. Changes in fair value hedges are reported in earnings along with changes in the fair value of the hedged items. When cash flow and fair value hedges affect net earnings, they are included on the same financial statement line as the underlying transaction (cost of products sold or interest expense). If these instruments do not meet hedge accounting criteria or contain ineffectiveness, the change in fair value (or a portion thereof) is recognized immediately in earnings in the same financial statement line as the underlying transaction.

Revenue Recognition

Revenue Recognition

Nucor recognizes revenue when persuasive evidence of a contractual arrangement exists, delivery has occurred, the sales price is fixed or determinable and collection is reasonably assured. Product is considered delivered to the customer once it has been shipped and title and risk of loss has been transferred.

Income Taxes

Income Taxes

Nucor utilizes the liability method of accounting for income taxes. Under the liability method, deferred taxes are determined based on the temporary differences between the financial statement and tax basis of assets and liabilities using tax rates expected to be in effect during the years in which the basis differences reverse. A valuation allowance is recorded when it is more likely than not that some of the deferred tax assets will not be realized.

Nucor recognizes the effect of income tax positions only if those positions are more likely than not of being sustained. Potential accrued interest and penalties related to unrecognized tax benefits are recognized as a component of interest expense.

Nucor’s intention is to permanently reinvest the earnings of certain foreign investments. Accordingly, no provisions have been made for taxes that may be payable upon remittance of such earnings.

Stock-Based Compensation

Stock-Based Compensation

The Company recognizes the cost of stock-based compensation as an expense using fair value measurement methods. The assumptions used to calculate the fair value of stock-based compensation granted are evaluated and revised, as necessary, to reflect market conditions and experience.

Foreign Currency Translation

Foreign Currency Translation

For Nucor’s operations where the functional currency is other than the U.S. dollar, assets and liabilities have been translated at year-end exchange rates, and income and expenses translated using average exchange rates for the respective periods. Adjustments resulting from the process of translating an entity’s financial statements into the U.S. dollar have been recorded in accumulated other comprehensive income (loss) and are included in net earnings only upon sale or liquidation of the underlying investments. Foreign currency transaction gains and losses are included in net earnings in the period they occur.

Recently Adopted Accounting Pronouncements

Recently Adopted Accounting Pronouncements

In the first quarter of 2014, Nucor adopted new accounting guidance, which requires unrecognized tax benefits to be presented as a decrease in net operating loss, similar tax loss or tax credit carryforward if certain criteria are met. Adoption of the guidance did not impact Nucor’s consolidated financial position, results of operations or cash flows.

In March 2013, new accounting guidance was issued on foreign currency matters that clarifies the guidance of a parent company’s accounting for the cumulative translation adjustment upon derecognition of certain subsidiaries or groups of assets within a foreign entity or of an investment in a foreign entity. Under this new standard, a parent company that ceases to have a controlling financial interest in a foreign subsidiary or group of assets within a foreign entity shall release any related cumulative translation adjustment into net income only if a sale or transfer results in complete or substantially complete liquidation of the foreign entity. This standard has been applied prospectively for the Company beginning January 1, 2014. The adoption of this standard did not have a material effect on the consolidated financial statements.

In February 2013, new accounting guidance was issued on joint and several liability arrangements for which the total amount of the obligation is fixed at the reporting date. Under this new standard, obligations resulting from joint and several liability arrangements are to be measured as the sum of: (a) the amount the reporting entity agreed with its co-obligors that it will pay and (b) any additional amount the reporting entity expects to pay on behalf of its co-obligors. This standard has been applied prospectively for the Company beginning January 1, 2014. The adoption of this standard did not have a material effect on the consolidated financial statements.

Recently Issued Accounting Pronouncements

Recently Issued Accounting Pronouncements

In April 2014, new accounting guidance was issued that changes the criteria for determining which disposals can be presented as discontinued operations and modifies related disclosure requirements. The new guidance is effective for annual and interim periods beginning after December 15, 2014. The impact on the Company of adopting the new guidance will depend on the nature, terms and size of business disposals completed after the effective date.

In May 2014, new accounting guidance was issued that will supersede nearly all existing accounting guidance related to revenue recognition. The new guidance provides that an entity recognizes revenue when it transfers promised goods or services to customers in an amount that reflects the consideration to which the entity expects to be entitled in exchange for those goods or services. This update also requires additional disclosure about the nature, amount, timing and uncertainty of revenue and cash flows arising from customer contracts, including significant judgments and changes in judgments, and assets recognized from costs incurred to obtain or fulfill a contract. The amendments are effective for the Company for all annual and interim reporting periods beginning after December 15, 2016. The Company is evaluating adoption methods and the impact it will have on the consolidated financial statements.

In August 2014, new accounting guidance was issued that specifies the responsibility that an entity’s management has to evaluate whether there is substantial doubt about the entity’s ability to continue as a going concern. The standard is effective for interim and annual periods beginning after December 15, 2016, and is not expected to have an effect on the Company’s financial statements.

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Debt and Other Financing Arrangements - Schedule of Debt and Other Financing Arrangements (Detail) (USD $) In Thousands, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013
Debt Instrument [Line Items]
Long-term Debt	$ 4,376,935	$ 4,380,200
Long-term Debt	4,376,935	4,380,200
Less current maturities	(16,335)	(3,300)
Long-term Debt due after one year	4,360,600	4,376,900
Notes, 5.75%, Due 2017 [Member]
Debt Instrument [Line Items]
Debt instrument face amount	600,000	600,000
Notes, 5.85%, Due 2018 [Member]
Debt Instrument [Line Items]
Debt instrument face amount	500,000	500,000
Notes, 4.125%, Due 2022 [Member]
Debt Instrument [Line Items]
Debt instrument face amount	600,000	600,000
Notes, 4.0%, Due 2023 [Member]
Debt Instrument [Line Items]
Debt instrument face amount	500,000	500,000
Notes, 6.40%, Due 2037 [Member]
Debt Instrument [Line Items]
Debt instrument face amount	650,000	650,000
Notes, 5.20%, Due 2043 [Member]
Debt Instrument [Line Items]
Debt instrument face amount	500,000	500,000
Industrial Revenue Bonds [Member] | 0.17% to 0.24%, variable, due from 2015 to 2040 [Member]
Debt Instrument [Line Items]
Debt instrument face amount	$ 1,026,935	$ 1,030,200

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Capital Stock

12 Months Ended

Dec. 31, 2014

Equity [Abstract]

Capital Stock

13. Capital Stock

The par value of Nucor’s common stock is $0.40 per share and there are 800 million shares authorized. In addition, 250,000 shares of preferred stock, par value of $4.00 per share, are authorized, with preferences, rights and restrictions as may be fixed by Nucor’s Board of Directors. There are no shares of preferred stock issued or outstanding.

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Acquisitions and Dispositions (Tables)

12 Months Ended

Dec. 31, 2014

Estimated Fair Values of Assets Acquired and Liabilities

The following table summarizes the estimated fair values of the assets acquired and liabilities assumed of Gallatin as of the date of acquisition (in thousands):

Cash	$	48,957
Accounts receivable		82,291
Inventory		101,692
Other current assets		5,117
Property, plant and equipment		483,007
Goodwill		98,505
Other intangible assets		67,150
Other assets		2,762
Total assets acquired		889,481
Current liabilities		105,816
Long-term debt		2,093
Deferred credits and other liabilities		2,500
Total liabilities assumed		110,409
Net assets acquired	$	779,072

The following table summarizes the estimated fair values of the assets acquired and liabilities assumed of Skyline as of the date of acquisition (in thousands):

Accounts receivable	$	128,004
Inventory		260,473
Other current assets		4,410
Property, plant and equipment		70,100
Goodwill		138,579
Other intangible assets		215,600
Total assets acquired		817,166
Current liabilities		137,654
Deferred credits and other liabilities		4,078
Total liabilities assumed		141,732
Net assets acquired	$	675,434

Gallatin Steel Company [Member]

Preliminary Purchase Price Allocation to Identifiable Intangible Assets

The purchase price allocation to the identifiable intangible assets is as follows (in thousands, except years):

As of the date of acquisition			Weighted- Average Life
Customer relationships	$	58,250		20 years
Trademarks and trade names		8,900		5 years
	$	67,150

Skyline Steel LLC [Member]

Preliminary Purchase Price Allocation to Identifiable Intangible Assets

The purchase price allocation to the identifiable intangible assets is as follows (in thousands, except years):

As of the date of acquisition			Weighted- Average Life
Customer relationships	$	184,500		17 years
Trademarks and trade names		28,500		20 years
Other		2,600		3 years
	$	215,600

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Schedule II - Valuation and Qualifying Accounts (Detail) (LIFO Reserve [Member], USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
LIFO Reserve [Member]
Valuation and Qualifying Accounts Disclosure [Line Items]
Balance at beginning of Year	$ 624,685	$ 607,240	$ 763,176
Additions charged to costs and expenses		17,445
Deductions	(57,289)		(155,936)
Balance at end of year	$ 567,396	$ 624,685	$ 607,240

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Fair Value Measurements

12 Months Ended

Dec. 31, 2014

Fair Value Disclosures [Abstract]

Fair Value Measurements

15. Fair Value Measurements

The following table summarizes information regarding Nucor’s financial assets and financial liabilities that are measured at fair value as of December 31, 2014 and 2013 (in thousands). Nucor does not have any non-financial assets or liabilities that are measured at fair value on a recurring basis.

				Fair Value Measurements at Reporting Date Using
Description	Carrying Amount in Consolidated Balance Sheets			Quoted Prices in Active Markets for Identical Assets (Level 1)		Significant Other Observable Inputs (Level 2)			Significant Unobservable Inputs (Level 3)
As of December 31, 2014
Assets:
Cash equivalents	$	861,656		$	861,656	$	—
Short-term investments		100,000			100,000		—
Foreign exchange and commodity contracts		2,228			—		2,228
Total assets	$	963,884		$	961,656	$	2,228		$	—
Liabilities:
Commodity contracts	$	(12,700	)	$	—	$	(12,700	)	$	—
As of December 31, 2013
Assets:
Cash equivalents	$	1,269,465		$	1,269,465
Short-term investments		28,191			28,191
Total assets	$	1,297,656		$	1,297,656		—			—
Liabilities:
Foreign exchange and commodity contracts	$	(555	)		—	$	(555	)		—

Fair value measurements for Nucor’s cash equivalents and short-term investments are classified under Level 1 because such measurements are based on quoted market prices in active markets for identical assets. Fair value measurements for Nucor’s derivatives are classified under Level 2 because such measurements are based on published market prices for similar assets or are estimated based on published market prices for similar assets or are estimated based on observable inputs such as interest rates, yield curves, credit risks, spot and future commodity prices and spot and future exchange rates.

The fair value of short-term and long-term debt, including current maturities, was approximately $4.97 billion at December 31, 2014 ($4.61 billion at December 31, 2013). The debt fair value estimates are classified under Level 2 because such estimates are based on readily available market prices of our debt at December 31, 2014 and 2013, or similar debt with the same maturities, ratings and interest rates.

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Capital Stock - Additional Information (Detail) (USD $)	Dec. 31, 2014	Dec. 31, 2013
Equity [Abstract]
The par value of common stock	$ 0.40
Common stock shares authorized	800,000,000	800,000,000
Preferred stock shares authorized	250,000
Preferred stock par value per share	$ 4.00
Preferred stock shares issued	0
Preferred stock shares outstanding	0

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Consolidated Statements Of Stockholders' Equity (USD $) In Thousands	Total	Common Stock [Member]	Additional Paid-in Capital [Member]	Retained Earnings [Member]	Accumulated Other Comprehensive Income (Loss) [Member]	Treasury Stock (at cost) [Member]	Total Nucor Stockholders' Equity [Member]	Noncontrolling Interests [Member]
BALANCES, beginning of period at Dec. 31, 2011	$ 7,706,580	$ 150,496	$ 1,756,534	$ 7,111,566	$ (38,177)	$ (1,505,534)	$ 7,474,885	$ 231,695
BALANCES, shares at beginning of period at Dec. 31, 2011		376,239				59,490
Net earnings	593,126			504,619			504,619	88,507
Other comprehensive income (loss)	95,231				95,226		95,226	5
Stock options exercised	10,515	142	10,373				10,515
Stock options exercised (in shares)	354	354
Stock option expense	9,850		9,850				9,850
Issuance of stock under award plans, net of forfeitures	36,119	167	32,395			3,557	36,119
Issuance of stock under award plans, net of forfeitures, shares		420				(140)
Amortization of unearned compensation	800		800				800
Cash dividends	(467,662)			(467,662)			(467,662)
Distributions to noncontrolling interests	(74,848)							(74,848)
Other	(24,337)		1,507	(24,000)	(288)		(22,781)	(1,556)
BALANCES, end of period at Dec. 31, 2012	7,885,374	150,805	1,811,459	7,124,523	56,761	(1,501,977)	7,641,571	243,803
BALANCES, shares at end of period at Dec. 31, 2012		377,013				59,350
Net earnings	585,529			488,025			488,025	97,504
Other comprehensive income (loss)	(47,681)				(47,681)		(47,681)
Stock option expense	8,576		8,576				8,576
Issuance of stock under award plans, net of forfeitures	26,565	205	22,497			3,863	26,565
Issuance of stock under award plans, net of forfeitures, shares		512				(153)
Amortization of unearned compensation	821		821				821
Cash dividends	(472,108)			(472,108)			(472,108)
Distributions to noncontrolling interests	(76,798)							(76,798)
BALANCES, end of period at Dec. 31, 2013	7,910,278	151,010	1,843,353	7,140,440	9,080	(1,498,114)	7,645,769	264,509
BALANCES, shares at end of period at Dec. 31, 2013		377,525				59,197
Net earnings	815,790			713,946			713,946	101,844
Other comprehensive income (loss)	(154,788)				(154,788)		(154,788)
Stock options exercised	5,614	54	5,560				5,614
Stock options exercised (in shares)	136	136
Stock option expense	7,716		7,716				7,716
Issuance of stock under award plans, net of forfeitures	29,667	173	26,009			3,485	29,667
Issuance of stock under award plans, net of forfeitures, shares		431				(138)
Amortization of unearned compensation	718		718				718
Cash dividends	(476,172)			(476,172)			(476,172)
Distributions to noncontrolling interests	(63,705)							(63,705)
BALANCES, end of period at Dec. 31, 2014	$ 8,075,118	$ 151,237	$ 1,883,356	$ 7,378,214	$ (145,708)	$ (1,494,629)	$ 7,772,470	$ 302,648
BALANCES, shares at end of period at Dec. 31, 2014		378,092				59,059

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Consolidated Balance Sheets (Parenthetical)	Dec. 31, 2014	Dec. 31, 2013
Statement of Financial Position [Abstract]
Common stock shares authorized	800,000,000	800,000,000
Common stock shares issued	378,092,000	377,525,000
Treasury stock	59,059,000	59,197,000

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Restricted Cash and Investments

12 Months Ended

Dec. 31, 2014

Restricted Cash and Investments [Abstract]

Restricted Cash and Investments

8. Restricted Cash and Investments

There were no restricted cash or investments as of December 31, 2014, or December 31, 2013. In November 2010, Nucor issued $600.0 million in 30-year Gulf Opportunity Zone bonds, the net proceeds of which were accounted for as restricted cash and investments. The restricted cash and investments were held in a trust account and were used to partially fund the capital costs associated with the construction of Nucor’s DRI facility in St. James Parish, Louisiana. Funds were disbursed as qualified expenditures for the construction of the facility were made ($275.3 million in 2013 and $311.8 million in 2012).

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Earning Per Share - Anti-Dilutive Stock Options (Detail) (USD $) In Thousands, except Per Share data, unless otherwise specified	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Earnings Per Share [Abstract]
Weighted-average shares		137	801
Weighted-average exercise price		$ 44.51	$ 42.07

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Accumulated Other Comprehensive (loss) Income - Components of Accumulated Other Comprehensive (Loss) Income (Parenthetical) (Detail) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Accumulated Other Comprehensive Income (Loss) [Line Items]
Amounts reclassified from accumulated other comprehensive (loss) income into earnings, Gains and Losses on Hedging Derivatives	$ 542		$ 42,515
Amounts reclassified from accumulated other comprehensive (loss) income into earnings, Adjustment to Early Retiree Medical Plan	(1,030)
AOCI reclassification impact on tax	(557)	0	0
AOCI reclassification impact on tax	200	0	25,000
Cost of Products Sold [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Amounts reclassified from accumulated other comprehensive (loss) income into earnings, Gains and Losses on Hedging Derivatives	542
Amounts reclassified from accumulated other comprehensive (loss) income into earnings, Adjustment to Early Retiree Medical Plan	(1,030)
AOCI reclassification impact on tax	$ (557)

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Document and Entity Information (USD $) In Billions, except Share data, unless otherwise specified	12 Months Ended
	Dec. 31, 2014	Feb. 20, 2015	Jul. 05, 2014
Document And Entity Information [Abstract]
Document Type	10-K
Amendment Flag	false
Document Period End Date	Dec. 31, 2014
Document Fiscal Year Focus	2014
Document Fiscal Period Focus	FY
Trading Symbol	NUE
Entity Registrant Name	NUCOR CORP
Entity Central Index Key	0000073309
Current Fiscal Year End Date	--12-31
Entity Well-known Seasoned Issuer	Yes
Entity Current Reporting Status	Yes
Entity Voluntary Filers	No
Entity Filer Category	Large Accelerated Filer
Entity Common Stock, Shares Outstanding		319,046,902
Entity Public Float			$ 16.04

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Goodwill and Other Intangible Assets

12 Months Ended

Dec. 31, 2014

Goodwill and Intangible Assets Disclosure [Abstract]

Goodwill and Other Intangible Assets

9. Goodwill and Other Intangible Assets

The change in the net carrying amount of goodwill for the years ended December 31, 2014 and 2013 by segment is as follows (in thousands):

	Steel  Mills		Steel Products			Raw Materials		All Other			Total
Balance, December 31, 2012	$	407,045	$	805,416		$	703,225	$	88,852		$	2,004,538
Reclassifications		88,852		—			—		(88,852	)		—
Translation		—		(26,067	)		—		—			(26,067	)
Other		—		(4,863	)		—		—			(4,863	)
Balance, December 31, 2013		495,897		774,486			703,225		—			1,973,608
Acquisitions		98,505		—			—		—			98,505
Translation		—		(30,112	)		—		—			(30,112	)
Other		—		311			26,352		—			26,663
Balance, December 31, 2014	$	594,402	$	744,685		$	729,577	$	—		$	2,068,664

The majority of goodwill is not tax deductible.

Previously, Nucor’s steel trading businesses and rebar distribution businesses were reported in the “All Other” category. Beginning in the first quarter of 2013, these businesses were reclassified to the steel mills segment as part of a realignment of Nucor’s reportable segments to better reflect the way in which they are managed (see Note 1).

Goodwill increased by $26.4 million in the third quarter of 2014 due to a correction of deferred taxes related to purchase accounting for the acquisition of The David J. Joseph Company in 2008. This correction did not have an impact on the condensed consolidated statements of earnings, condensed consolidated statements of comprehensive income and the condensed consolidated statements of cash flows in the periods presented and in prior years. Also, this correction had no impact on the results of the goodwill impairment assessments performed in prior periods and is not material to the current or any prior period.

Intangible assets with estimated lives of 5 to 22 years are amortized on a straight-line or accelerated basis and are comprised of the following (in thousands):

	December 31, 2014				December 31, 2013
	Gross Amount		Accumulated Amortization		Gross Amount		Accumulated Amortization
Customer relationships	$	1,199,942	$	454,353	$	1,147,786	$	391,254
Trademarks and trade names		158,584		48,356		151,332		40,397
Other		22,823		16,547		21,869		15,182
	$	1,381,349	$	519,256	$	1,320,987	$	446,833

Intangible asset amortization expense was $72.4 million in 2014 ($74.4 million in 2013 and $73.0 million in 2012). Annual amortization expense is estimated to be $73.2 million in 2015; $71.5 million in 2016; $69.8 million in 2017; $66.1 million in 2018 and $63.3 million in 2019.

The Company completed its annual goodwill impairment testing as of the first days of the fourth quarters of 2014, 2013 and 2012 and concluded that as of such dates there was no impairment of goodwill for any of its reporting units. We do not believe there are any reporting units at significant risk of goodwill impairment in the near term. However, assumptions in estimating reporting unit fair values are subject to a high degree of judgment and complexity. Changes in assumptions and estimates may affect the estimated reporting unit fair values and could result in impairment charges in future periods.

There are no significant historical accumulated impairment charges, by segment or in the aggregate, related to goodwill.

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Stock-Based Compensation - Summary of Nucor's Restricted Stock Activity under AIP and LTIP (Detail) (USD $) In Thousands, except Per Share data, unless otherwise specified	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
AIP and LTIP [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Unvested at beginning of year, Shares	73	72	94
Granted, Shares	127	122	122
Vested, Shares	(135)	(121)	(144)
Canceled, Shares	0	0	0
Unvested at end of year, Shares	65	73	72
Shares reserved for future grants	1,111	1,238	1,360
Restricted Stock Units and Stock Options [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares reserved for future grants	11,851	10,486	11,839
Restricted Stock Units and Stock Options [Member] | AIP and LTIP [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Unvested at beginning of year, Grant Date Fair Value	45.49	43.72	42.46
Granted, Grant Date Fair Value	50.35	47.36	42.20
Vested, Grant Date Fair Value	48.76	46.32	41.62
Canceled, Grant Date Fair Value	0	0	0
Unvested at end of year, Grant Date Fair Value	48.20	45.49	43.72

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Accumulated Other Comprehensive (loss) Income - Components of Accumulated Other Comprehensive (Loss) Income (Detail) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Accumulated Other Comprehensive Income (Loss), Net of Tax [Abstract]
Beginning Balance, Gains and Losses on Hedging Derivatives
Other comprehensive income (loss) before reclassifications, Gains and Losses on Hedging Derivatives	(8,542)		(2,264)
Amounts reclassified from accumulated other comprehensive (loss) income into earnings, Gains and Losses on Hedging Derivatives	542		42,515
Net current-period other comprehensive (loss) income, Gains and Losses on Hedging Derivatives	(8,000)
Ending Balance, Gains and Losses on Hedging Derivatives	(8,000)
Beginning Balance, Foreign Currency Gain (Loss)	(7,438)	46,181
Other comprehensive income (loss) before reclassifications, Foreign Currency Gain (Loss)	(141,530)	(53,619)
Amounts reclassified from accumulated other comprehensive (loss) income into earnings, Foreign Currency Gain (Loss)	0	0
Net current-period other comprehensive (loss) income, Foreign Currency Gain (Loss)	(141,530)	(53,619)	58,626
Ending Balance, Foreign Currency Gain (Loss)	(148,968)	(7,438)	46,181
Beginning Balance, Adjustment to Early Retiree Medical Plan	16,518	10,580
Other comprehensive income (loss) before reclassifications, Adjustment to Early Retiree Medical Plan	(4,228)	5,938	(3,646)
Amounts reclassified from accumulated other comprehensive (loss) income into earnings, Adjustment to Early Retiree Medical Plan	(1,030)
Net current-period other comprehensive (loss) income, Adjustment to Early Retiree Medical Plan	(5,258)	5,938
Ending Balance, Adjustment to Early Retiree Medical Plan	11,260	16,518	10,580
Beginning Balance	9,080	56,761
Other comprehensive income (loss) before reclassifications	(154,300)	(47,681)
Amounts reclassified from accumulated other comprehensive (loss) income into earnings	(488)
Net current-period other comprehensive (loss) income	(154,788)	(47,681)	95,231
Ending Balance	$ (145,708)	$ 9,080	$ 56,761

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Consolidated Statements of Earnings (USD $) In Thousands, except Per Share data, unless otherwise specified	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Income Statement [Abstract]
Net sales	$ 21,105,141	$ 19,052,046	$ 19,429,273
Costs, expenses and other:
Cost of products sold (Notes 6, 14 and 18)	19,198,615	17,641,421	17,915,735
Marketing, administrative and other expenses (Notes 3 and 7)	546,198	481,904	454,900
Equity in (earnings) losses of unconsolidated affiliates (Note 10)	(13,505)	(9,297)	13,323
Impairment of non-current assets (Note 10)			30,000
Interest expense, net (Notes 7, 19 and 20)	169,256	146,895	162,375
Costs, expenses and other, total	19,900,564	18,260,923	18,576,333
Earnings before income taxes and noncontrolling interests	1,204,577	791,123	852,940
Provision for income taxes (Note 20)	388,787	205,594	259,814
Net earnings	815,790	585,529	593,126
Earnings attributable to noncontrolling interests	101,844	97,504	88,507
Net earnings attributable to Nucor stockholders	$ 713,946	$ 488,025	$ 504,619
Net earnings per share (Note 22):
Basic	$ 2.22	$ 1.52	$ 1.58
Diluted	$ 2.22	$ 1.52	$ 1.58

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Acquisitions and Dispositions

12 Months Ended

Dec. 31, 2014

Business Combinations [Abstract]

Acquisitions and Dispositions

3. Acquisitions and Dispositions

On October 8, 2014, Nucor acquired the entire equity interest in Gallatin Steel Company (Gallatin) for a cash purchase price of $779.1 million, including working capital adjustments. The acquisition was partially funded by the issuance of approximately $300 million of commercial paper with the remaining funds coming from cash on hand. Located on the Ohio River in Ghent, Kentucky, Gallatin has an annual sheet steel production capacity of approximately 1,800,000 tons. This acquisition is strategically important as it expands Nucor’s footprint in the Midwestern United States market, and it will broaden Nucor’s product offerings. Gallatin’s financial results are included as part of the steel mills segment (see Note 23).

We have allocated the purchase price for Gallatin to its individual assets acquired and liabilities assumed.

The following table summarizes the estimated fair values of the assets acquired and liabilities assumed of Gallatin as of the date of acquisition (in thousands):

Cash	$	48,957
Accounts receivable		82,291
Inventory		101,692
Other current assets		5,117
Property, plant and equipment		483,007
Goodwill		98,505
Other intangible assets		67,150
Other assets		2,762
Total assets acquired		889,481
Current liabilities		105,816
Long-term debt		2,093
Deferred credits and other liabilities		2,500
Total liabilities assumed		110,409
Net assets acquired	$	779,072

The purchase price allocation to the identifiable intangible assets is as follows (in thousands, except years):

As of the date of acquisition			Weighted- Average Life
Customer relationships	$	58,250		20 years
Trademarks and trade names		8,900		5 years
	$	67,150

The goodwill of $98.5 million is primarily attributed to the synergies expected to arise after the acquisition and has been allocated to the steel mills segment (see Note 9). Approximately $87.6 million of the goodwill recognized is expected to be deductible for tax purposes.

On June 20, 2012, Nucor completed the acquisition of the entire equity interest in Skyline Steel LLC (Skyline) and its subsidiaries for the cash purchase price of $675.4 million. No cash was received nor was any debt assumed as a result of the acquisition. Skyline’s financial results are included as part of the steel mills segment (see Note 23).

Skyline is a steel foundation manufacturer and distributor serving the U.S., Canada, Mexico and the Caribbean. Skyline’s steel products are used in marine construction, bridge and highway construction, heavy civil construction, storm protection, underground commercial parking and environmental containment projects in the infrastructure and construction industries. Skyline is a significant consumer of H-piling and sheet piling from Nucor-Yamato Steel Company.

We allocated the purchase price for Skyline to its individual assets acquired and liabilities assumed.

The following table summarizes the estimated fair values of the assets acquired and liabilities assumed of Skyline as of the date of acquisition (in thousands):

Accounts receivable	$	128,004
Inventory		260,473
Other current assets		4,410
Property, plant and equipment		70,100
Goodwill		138,579
Other intangible assets		215,600
Total assets acquired		817,166
Current liabilities		137,654
Deferred credits and other liabilities		4,078
Total liabilities assumed		141,732
Net assets acquired	$	675,434

The purchase price allocation to the identifiable intangible assets is as follows (in thousands, except years):

As of the date of acquisition			Weighted- Average Life
Customer relationships	$	184,500		17 years
Trademarks and trade names		28,500		20 years
Other		2,600		3 years
	$	215,600

The goodwill of $138.6 million is primarily attributed to the synergies expected to arise after the acquisition and was allocated to the steel mills segment. Approximately $128.2 million of the goodwill recognized is expected to be deductible for tax purposes.

In August 2012, Nucor sold the assets of Nucor Wire Products Pennsylvania, Inc., resulting in a loss of $17.6 million. This charge is included in marketing, administrative and other expenses in the consolidated statement of earnings.

In November 2012, Nucor acquired a 50% economic and voting interest in Hunter Ridge Energy Services LLC (Hunter Ridge). Hunter Ridge provides services for the gathering, separation and compression of energy products including natural gas produced by Nucor’s working interest drilling program. Nucor accounts for the investment (on a one-month lag basis) under the equity method (see Note 10). As of December 31, 2014, Nucor’s investment in Hunter Ridge was $138.6 million ($134.5 million at December 31, 2013).

Other minor acquisitions, exclusive of purchase price adjustments of acquisitions made, totaled $38.5 million in 2014, none in 2013, and $85.4 million in 2012.

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Summary of Significant Accounting Policies

12 Months Ended

Dec. 31, 2014

Accounting Policies [Abstract]

Summary of Significant Accounting Policies

2. Summary of Significant Accounting Policies

Cash and Cash Equivalents

Cash equivalents are recorded at cost plus accrued interest, which approximates fair value, and have original maturities of three months or less at the date of purchase. Cash and cash equivalents are maintained primarily with a few high-credit quality financial institutions.

Short-term Investments

Short-term investments are recorded at cost plus accrued interest, which approximates fair value. Unrealized gains and losses on investments classified as available-for-sale are recorded as a component of accumulated other comprehensive income (loss). Management determines the appropriate classification of its investments at the time of purchase and re-evaluates such determination at each balance sheet date.

Inventories Valuation

Inventories are stated at the lower of cost or market. Inventories valued using the last-in, first-out (LIFO) method of accounting represent approximately 43% of total inventories as of December 31, 2014 (45% as of December 31, 2013). All inventories held by the parent company and Nucor-Yamato Steel Company are valued using the LIFO method of accounting except for supplies that are consumed indirectly in the production process, which are valued using the first-in, first-out (FIFO) method of accounting. All inventories held by other subsidiaries of the parent company are valued using the FIFO method of accounting. The Company records any amount required to reduce the carrying value of inventory to net realizable value as a charge to cost of products sold.

Property, Plant and Equipment

Property, plant and equipment are stated at cost, except for property, plant and equipment acquired through acquisitions which are recorded at acquisition date fair value. With the exception of our natural gas wells, depreciation is provided on a straight-line basis over the estimated useful lives of the assets. Depletion of all capitalized costs associated with our natural gas producing properties is expensed on a unit-of-production basis by individual field as the gas from the proved developed reserves is produced. The costs of planned major maintenance activities are capitalized as part of other current assets and amortized over the period until the next scheduled major maintenance activity. All other repairs and maintenance activities are expensed when incurred.

Goodwill and Other Intangibles

Goodwill is the excess of cost over the fair value of net assets of businesses acquired. Goodwill is not amortized but is tested annually for impairment and whenever events or circumstances change that would make it more likely than not that an impairment may have occurred. We perform our annual impairment analysis as of the first day of the fourth quarter each year. The evaluation of impairment involves comparing the current estimated fair value of each reporting unit, which is a level below the reportable segment, to the recorded value, including goodwill. When appropriate, Nucor performs a qualitative assessment to determine whether it is more likely than not that the fair value of a reporting unit is less than its carrying amount. For certain reporting units it is necessary to perform a quantitative analysis. In these instances, a discounted cash flow model is used to determine the current estimated fair value of these reporting units. A number of significant assumptions and estimates are involved in the application of the discounted cash flow model to forecast operating cash flows, including market growth and market share, sales volumes and prices, costs to produce, discount rate and estimated capital needs. Management considers historical experience and all available information at the time the fair values of its reporting units are estimated. Assumptions in estimating future cash flows are subject to a high degree of judgment and complexity. Changes in assumptions and estimates may affect the fair value of goodwill and could result in impairment charges in future periods.

Finite-lived intangible assets are amortized over their estimated useful lives.

Long-Lived Asset Impairments

We evaluate our property, plant and equipment and finite-lived intangible assets for potential impairment on an individual asset basis or at the lowest level asset grouping for which cash flows can be separately identified. Asset impairments are assessed whenever circumstances indicate that the carrying amounts of those productive assets could exceed their projected undiscounted cash flows. When it is determined that impairment exists, the related assets are written down to estimated fair market value.

Equity Method Investments

Investments in joint ventures in which Nucor shares control over the financial and operating decisions but in which Nucor is not the primary beneficiary are accounted for under the equity method. Each of the Company’s equity method investments is subject to a review for impairment if, and when, circumstances indicate that a decline in value below its carrying amount may have occurred. Examples of such circumstances include, but are not limited to, a significant deterioration in the earnings performance or business prospects of the investee; a significant adverse change in the regulatory, economic or technological environment of the investee; a significant adverse change in the general market condition of either the geographic area or the industry in which the investee operates; and recurring negative cash flows from operations. If management considers the decline to be other than temporary, the Company would write down the investment to its estimated fair market value.

Derivative Financial Instruments

Nucor uses derivative financial instruments from time to time primarily to partially manage its exposure to price risk related to natural gas purchases used in the production process and to changes in interest rates on outstanding debt instruments. Nucor also uses derivatives to hedge a portion of our scrap, copper and aluminum purchases and sales. In addition, Nucor uses forward foreign exchange contracts to hedge cash flows associated with certain assets and liabilities, firm commitments and anticipated transactions.

Nucor recognizes all material derivative instruments in the consolidated balance sheets at fair value. Amounts included in accumulated other comprehensive income (loss) related to cash flow hedges are reclassified into earnings when the underlying transaction is recognized in net earnings. Changes in fair value hedges are reported in earnings along with changes in the fair value of the hedged items. When cash flow and fair value hedges affect net earnings, they are included on the same financial statement line as the underlying transaction (cost of products sold or interest expense). If these instruments do not meet hedge accounting criteria or contain ineffectiveness, the change in fair value (or a portion thereof) is recognized immediately in earnings in the same financial statement line as the underlying transaction.

Revenue Recognition

Nucor recognizes revenue when persuasive evidence of a contractual arrangement exists, delivery has occurred, the sales price is fixed or determinable and collection is reasonably assured. Product is considered delivered to the customer once it has been shipped and title and risk of loss has been transferred.

Income Taxes

Nucor utilizes the liability method of accounting for income taxes. Under the liability method, deferred taxes are determined based on the temporary differences between the financial statement and tax basis of assets and liabilities using tax rates expected to be in effect during the years in which the basis differences reverse. A valuation allowance is recorded when it is more likely than not that some of the deferred tax assets will not be realized.

Nucor recognizes the effect of income tax positions only if those positions are more likely than not of being sustained. Potential accrued interest and penalties related to unrecognized tax benefits are recognized as a component of interest expense.

Nucor’s intention is to permanently reinvest the earnings of certain foreign investments. Accordingly, no provisions have been made for taxes that may be payable upon remittance of such earnings.

Stock-Based Compensation

The Company recognizes the cost of stock-based compensation as an expense using fair value measurement methods. The assumptions used to calculate the fair value of stock-based compensation granted are evaluated and revised, as necessary, to reflect market conditions and experience.

Foreign Currency Translation

For Nucor’s operations where the functional currency is other than the U.S. dollar, assets and liabilities have been translated at year-end exchange rates, and income and expenses translated using average exchange rates for the respective periods. Adjustments resulting from the process of translating an entity’s financial statements into the U.S. dollar have been recorded in accumulated other comprehensive income (loss) and are included in net earnings only upon sale or liquidation of the underlying investments. Foreign currency transaction gains and losses are included in net earnings in the period they occur.

Recently Adopted Accounting Pronouncements

In the first quarter of 2014, Nucor adopted new accounting guidance, which requires unrecognized tax benefits to be presented as a decrease in net operating loss, similar tax loss or tax credit carryforward if certain criteria are met. Adoption of the guidance did not impact Nucor’s consolidated financial position, results of operations or cash flows.

In March 2013, new accounting guidance was issued on foreign currency matters that clarifies the guidance of a parent company’s accounting for the cumulative translation adjustment upon derecognition of certain subsidiaries or groups of assets within a foreign entity or of an investment in a foreign entity. Under this new standard, a parent company that ceases to have a controlling financial interest in a foreign subsidiary or group of assets within a foreign entity shall release any related cumulative translation adjustment into net income only if a sale or transfer results in complete or substantially complete liquidation of the foreign entity. This standard has been applied prospectively for the Company beginning January 1, 2014. The adoption of this standard did not have a material effect on the consolidated financial statements.

In February 2013, new accounting guidance was issued on joint and several liability arrangements for which the total amount of the obligation is fixed at the reporting date. Under this new standard, obligations resulting from joint and several liability arrangements are to be measured as the sum of: (a) the amount the reporting entity agreed with its co-obligors that it will pay and (b) any additional amount the reporting entity expects to pay on behalf of its co-obligors. This standard has been applied prospectively for the Company beginning January 1, 2014. The adoption of this standard did not have a material effect on the consolidated financial statements.

Recently Issued Accounting Pronouncements

In April 2014, new accounting guidance was issued that changes the criteria for determining which disposals can be presented as discontinued operations and modifies related disclosure requirements. The new guidance is effective for annual and interim periods beginning after December 15, 2014. The impact on the Company of adopting the new guidance will depend on the nature, terms and size of business disposals completed after the effective date.

In May 2014, new accounting guidance was issued that will supersede nearly all existing accounting guidance related to revenue recognition. The new guidance provides that an entity recognizes revenue when it transfers promised goods or services to customers in an amount that reflects the consideration to which the entity expects to be entitled in exchange for those goods or services. This update also requires additional disclosure about the nature, amount, timing and uncertainty of revenue and cash flows arising from customer contracts, including significant judgments and changes in judgments, and assets recognized from costs incurred to obtain or fulfill a contract. The amendments are effective for the Company for all annual and interim reporting periods beginning after December 15, 2016. The Company is evaluating adoption methods and the impact it will have on the consolidated financial statements.

In August 2014, new accounting guidance was issued that specifies the responsibility that an entity’s management has to evaluate whether there is substantial doubt about the entity’s ability to continue as a going concern. The standard is effective for interim and annual periods beginning after December 15, 2016, and is not expected to have an effect on the Company’s financial statements.

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Derivative Financial Instruments

12 Months Ended

Dec. 31, 2014

Derivative Instruments and Hedging Activities Disclosure [Abstract]

Derivative Financial Instruments

14. Derivative Financial Instruments

The following tables summarize information regarding Nucor’s derivative instruments (in thousands):

Fair Value of Derivative Instruments
		Fair Value at December 31,
	Consolidated Balance Sheet Location	2014			2013
Asset derivatives not designated as hedging instruments:
Commodity contracts	Other current assets	$	1,856		$	—
Foreign exchange contracts	Other current assets		372			—
Total asset derivatives		$	2,228		$	—
Liability derivatives designated as hedging instruments:
Commodity contracts	Accrued expenses and other current liabilities		(6,400	)		—
Commodity contracts	Deferred credits and other liabilities		(6,300	)		—
Total liability derivatives designated as hedging instruments			(12,700	)		—
Liability derivatives not designated as hedging instruments:
Commodity contracts	Accrued expenses and other current liabilities		—			(553	)
Foreign exchange contracts	Accrued expenses and other current liabilities		—			(2	)
Total liability derivatives not designated as hedging instruments			—			(555	)
Total liability derivatives		$	(12,700	)	$	(555	)

The Effect of Derivative Instruments on the Consolidated Statements of Earnings

Derivatives Designated as Hedging Instruments (in thousands)

Derivatives in Cash Flow Hedging Relationships	Statement of Earnings Location	Amount of Gain or (Loss), net of tax, Recognized in OCI on Derivatives (Effective Portion)								Amount of Gain or (Loss), net of tax, Reclassified from Accumulated OCI into Earnings on Derivatives (Effective Portion)								Amount of Gain or (Loss), net of tax, Recognized in Earnings on Derivatives (Ineffective Portion)
		2014			2013		2012			2014			2013		2012			2014		2013		2012
Commodity contracts	Cost of products sold	$	(8,542	)	$	—	$	(2,264	)	$	(542	)	$	—	$	(42,515	)	$	—	$	—	$	500

Derivatives Not Designated as Hedging Instruments (in thousands)
Derivatives Not Designated as Hedging Instruments	Statement of Earnings Location	Amount of Gain or (Loss) Recognized in Earnings  on Derivatives
		2014		2013		2012
Commodity contracts	Cost of products sold	$	1,890	$	4,622	$	1,321
Foreign exchange contracts	Cost of products sold		748		112		198
Total		$	2,638	$	4,734	$	1,519

At December 31, 2014, natural gas swaps covering approximately 15.6 million MMBTUs (extending through February 2017) were outstanding.

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Equity Investments

12 Months Ended

Dec. 31, 2014

Equity Method Investments and Joint Ventures [Abstract]

Equity Investments

10. Equity Investments

The carrying value of our equity investments in domestic and foreign companies was $872.5 million at December 31, 2014 ($936.0 million at December 31, 2013), and is recorded in other assets in the consolidated balance sheets.

DUFERDOFIN NUCOR

Nucor owns a 50% economic and voting interest in Duferdofin Nucor S.r.l. (Duferdofin Nucor), an Italian steel manufacturer, and accounts for the investment (on a one-month lag basis) under the equity method, as control and risk of loss are shared equally between the members.

Nucor’s investment in Duferdofin Nucor at December 31, 2014, was $412.9 million ($465.4 million at December 31, 2013). Nucor’s 50% share of the total net assets of Duferdofin Nucor was $57.4 million at December 31, 2014, resulting in a basis difference of $355.5 million due to the step-up to fair value of certain assets and liabilities attributable to Duferdofin Nucor as well as the identification of goodwill ($293.2 million) and finite-lived intangible assets. This basis difference, excluding the portion attributable to goodwill, is being amortized based on the remaining estimated useful lives of the various underlying net assets, as appropriate. Amortization expense and other purchase accounting adjustments associated with the fair value step-up were $10.5 million in 2014 ($11.2 million in 2013 and $11.1 million in 2012).

As of December 31, 2014, Nucor had outstanding notes receivable of €35.0 million ($42.5 million) from Duferdofin Nucor (€35.0 million, or $48.2 million, as of December 31, 2013). The notes receivable bear interest at 1.34% and will reset annually on September 30 to the twelve-month Euro Interbank Offered Rate (Euribor) plus 1% per year. The principal amounts are due on January 31, 2016. As of December 31, 2014, and December 31, 2013, the note receivable was classified in other assets in the consolidated balance sheets.

Nucor has issued guarantees, the fair value of which is immaterial, for its ownership percentage (50%) of Duferdofin Nucor’s borrowings under Facility A of a Structured Trade Finance Facilities Agreement as well as the Standby Medium Long Term Loan Credit Facility, which mature on April 26, 2016, and April 22, 2016, respectively. After amending the loan agreement in the second quarter of 2013, the maximum amount Duferdofin Nucor can borrow under Facility A is €122.5 million ($148.7 million as of December 31, 2014). As of December 31, 2014, there was €107.0 million ($129.9 million) outstanding under that facility (€112.0 million, or $154.4 million, at December 31, 2013). The guarantee under the Standby Medium Long Term Credit Facility was issued in the second quarter of 2014, and as of December 31, 2014, Duferdofin Nucor had the maximum borrowing amount of €60.0 million ($72.8 million) outstanding under the facility. If Duferdofin Nucor fails to pay when due any amounts for which it is obligated under Facility A or the Standby Medium Long Term Credit Facility, Nucor could be required to pay 50% of such amounts pursuant to and in accordance with the terms of its guarantees. Any indebtedness of Duferdofin Nucor to Nucor is effectively subordinated to the indebtedness of Duferdofin Nucor under both financing agreements. Nucor has not recorded any liability associated with these guarantees.

NUMIT

Nucor has a 50% economic and voting interest in NuMit LLC (NuMit). NuMit owns 100% of the equity interest in Steel Technologies LLC, an operator of 25 sheet processing facilities located throughout the U.S., Canada and Mexico. Nucor accounts for the investment in NuMit (on a one-month lag basis) under the equity method as control and risk of loss are shared equally between the members.

Nucor’s investment in NuMit at December 31, 2014, was $301.5 million ($318.4 million as of December 31, 2013). At December 31, 2013, Nucor had a $40.0 million note receivable and a receivable of $17.0 million on a $100.0 million line of credit that Nucor extended to Steel Technologies, both of which were included in other current assets in the consolidated balance sheets. Steel Technologies secured its own external financing in 2014 and, as a result, both the note receivable and the amounts Steel Technologies had outstanding on the line of credit with Nucor were repaid in 2014. Nucor no longer has a line of credit extended to Steel Technologies. Nucor received distributions of $52.7 million and $6.7 million from NuMit during 2014 and 2013, respectively.

HUNTER RIDGE

Nucor has a 50% economic and voting interest in Hunter Ridge Energy Services LLC (Hunter Ridge). Hunter Ridge provides services for the gathering, separation and compression of energy products including natural gas produced by Nucor’s working interest drilling program. Nucor accounts for the investment (on a one-month lag basis) under the equity method, as control and risk of loss are shared equally between the members. Nucor’s investment in Hunter Ridge at December 31, 2014, was $138.6 million ($134.5 million at December 31, 2013).

ALL EQUITY INVESTMENTS

Nucor reviews its equity investments for impairment if and when circumstances indicate that a decline in value below their carrying amounts may have occurred. In the second quarter of 2012, Nucor concluded that a triggering event occurred requiring assessment for impairment of its equity investment in Duferdofin Nucor due to the continued declines in the global demand for steel, the escalated economic and political turmoil in Europe and continued operating performance well below budgeted levels through the first half of 2012. Another contributing factor was that Duferdofin Nucor had a recently updated unfavorable forecast of future operating performance. The diminished demand combined with the continued lower than budgeted levels of operating performance significantly impacted the financial results of Duferdofin Nucor through the first half of 2012. After completing its assessment, Nucor determined that the carrying amount exceeded its estimated fair value and recorded a $30.0 million impairment charge against the Company’s investment in Duferdofin Nucor. This charge is included in impairment of non-current assets in the consolidated statements of earnings.

Although the operating results of Duferdofin Nucor have improved since 2012 and there have been no significant deteriorations in near-term financial projections or other key assumptions since the last impairment test performed in the fourth quarter of 2013, Nucor concluded that it was appropriate to reassess its equity investment in Duferdofin Nucor for impairment during the fourth quarter of 2014 due to the protracted challenging steel market conditions in Europe. After completing its assessment, the Company determined that the estimated fair value exceeded its carrying amount by a sufficient amount and that there was no need for additional impairment charges. The assumptions that most significantly affect the fair value determination include projected revenues and the discount rate. It is reasonably possible that material deviation of future performance from the estimates used in our most recent valuation could result in further impairment of our investment in Duferdofin Nucor.

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Income Taxes - Components of Earnings from Continuing Operations Before Income Taxes and Noncontrolling Interests (Detail) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Income Tax Disclosure [Abstract]
United States	$ 1,161,953	$ 755,921	$ 854,705
Foreign	42,624	35,202	(1,765)
Earnings before income taxes and noncontrolling interests	$ 1,204,577	$ 791,123	$ 852,940

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Inventories

12 Months Ended

Dec. 31, 2014

Inventory Disclosure [Abstract]

Inventories

6. Inventories

Inventories consist of approximately 40% raw materials and supplies and 60% finished and semi-finished products at December 31, 2014 and December 31, 2013. Nucor’s manufacturing process consists of a continuous, vertically integrated process from which products are sold to customers at various stages throughout the process. Since most steel products can be classified as either finished or semi-finished products, these two categories of inventory are combined.

If the FIFO method of accounting had been used, inventories would have been $567.4 million higher at December 31, 2014 ($624.7 million higher at December 31, 2013). Use of the lower of cost or market method reduced inventories by $2.7 million at December 31, 2014 ($2.1 million at December 31, 2013).

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Goodwill and Other Intangible Assets - Schedule of Change in Net Carrying Amount of Goodwill by Segment (Detail) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013
Goodwill [Line Items]
Balance, beginning of period	$ 1,973,608	$ 2,004,538
Acquisitions	98,505
Reclassifications
Translation	(30,112)	(26,067)
Other	26,663	(4,863)
Balance, end of period	2,068,664	1,973,608
Steel Mills [Member]
Goodwill [Line Items]
Balance, beginning of period	495,897	407,045
Acquisitions	98,505
Reclassifications		88,852
Translation
Other
Balance, end of period	594,402	495,897
Steel Products [Member]
Goodwill [Line Items]
Balance, beginning of period	774,486	805,416
Translation	(30,112)	(26,067)
Other	311	(4,863)
Balance, end of period	744,685	774,486
Raw Materials [Member]
Goodwill [Line Items]
Balance, beginning of period	703,225	703,225
Reclassifications
Translation
Other	26,352
Balance, end of period	729,577	703,225
Other Segments [Member]
Goodwill [Line Items]
Balance, beginning of period		88,852
Reclassifications		$ (88,852)

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Short-term Investments

12 Months Ended

Dec. 31, 2014

Short-term Investments [Abstract]

Short-term Investments

4. Short-term Investments

Nucor’s short-term investments held as of December 31, 2014, and December 31, 2013, were $100.0 million and $28.2 million, respectively. These investments consisted of fixed term deposits and certificates of deposit (CDs) at December 31, 2014, and December 31, 2013, respectively, and are classified as available-for-sale. The interest rates on the fixed term deposits and CDs are fixed at inception and interest income is recorded as earned.

No realized or unrealized gains or losses were incurred in 2014, 2013 or 2012.

The contractual maturities of all of the fixed term deposits outstanding at December 31, 2014, are before December 31, 2015.

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Accounts Receivable

12 Months Ended

Dec. 31, 2014

Receivables [Abstract]

Accounts Receivable

5. Accounts Receivable

An allowance for doubtful accounts is maintained for estimated losses resulting from the inability of our customers to make required payments. Accounts receivable are stated net of the allowance for doubtful accounts of $65.4 million at December 31, 2014 ($58.3 million at December 31, 2013, and $57.4 million at December 31, 2012).

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Property, Plant and Equipment

12 Months Ended

Dec. 31, 2014

Property, Plant and Equipment [Abstract]

Property, Plant and Equipment

7. Property, Plant and Equipment

	(in thousands) December 31,
	2014			2013
Land and improvements	$	576,511		$	555,309
Buildings and improvements		1,018,342			941,379
Machinery and equipment		10,080,640			9,159,151
Proved oil and gas properties		584,466			487,033
Construction in process and equipment deposits		193,594			400,373
		12,453,553			11,543,245
Less accumulated depreciation		(7,165,914	)		(6,626,221	)
	$	5,287,639		$	4,917,024

The estimated useful lives primarily range from 5 to 25 years for land improvements, 4 to 40 years for buildings and improvements and 2 to 15 years for machinery and equipment. The useful life for proved oil and gas properties is based on the unit-of-production method and varies by well.

Included within property, plant and equipment, net at December 31, 2014, is $22.8 million of assets, net of accumulated depreciation, under a capital lease agreement (none at December 31, 2013). The gross amount of property, plant and equipment acquired under the capital lease was $25.4 million, which is not included in capital expenditures on the condensed consolidated statement of cash flows. Total obligations associated with this capital lease agreement were $23.2 million at December 31, 2014 (none at December 31, 2013), of which $2.2 million was classified in accrued expenses and other current liabilities and $21.0 million was classified in deferred credits and other liabilities in the consolidated balance sheets.

In the third quarter of 2013, one of three iron ore storage domes collapsed at Nucor Steel Louisiana in St. James Parish. As a result, Nucor recorded a partial write-down of assets at the facility, including $21.0 million of property, plant and equipment and $7.0 million of inventory, offset by a $14.0 million insurance receivable that was based on management’s best estimate of probable insurance recoveries. The associated net charge of $14.0 million was included in marketing, administrative and other expenses in the consolidated statement of earnings in 2013. As of December 31, 2014, Nucor has received initial payments of $10.3 million related to the insurance receivable. The two remaining storage domes have a carrying value of approximately $20 million. Nucor continues to assess these two domes and the assets associated with them. As a result of the ongoing assessment, it is possible that Nucor will make operational decisions that could impact the carrying value of the domes and associated assets and the amount of insurance proceeds claimed by and payable to us.

In the fourth quarter of 2014, an equipment failure occurred at Nucor Steel Louisiana related to the process gas heater. There were no injuries, no environmental impact and no damage to any other part of the direct reduced iron (DRI) facility as a result of this incident. Production operations were suspended after the failure and have not restarted. Nucor is in the process of making the necessary repairs and adjustments to the process gas heater. Nucor Steel Louisiana is estimated to resume operations late in the first quarter of 2015.

Included in property plant and equipment within the steel mills segment at December 31, 2014, and December 31, 2013, is approximately $84.1 million related to the anticipated further development activities at the St. James Parish site, the majority of which are engineering designs. Changes to the anticipated development activities at this site could result in full or partial impairment of these capitalized assets.

Nucor capitalized $2.9 million of interest expense in 2014 ($10.9 million in 2013 and $4.7 million in 2012) related to the borrowing costs associated with various construction projects.

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Current Liabilities - Additional Information (Detail) (USD $) In Millions, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013
Liabilities, Current [Abstract]
Book overdrafts	$ 107.9	$ 81.6
Dividends payable, current	$ 119.7	$ 118.7

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Income Taxes - Provision for Income Taxes (Detail) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Components of Income Tax Expense (Benefit), Continuing Operations [Abstract]
Federal, current	$ 247,898	$ 138,343	$ 261,552
State, current	30,790	223	20,337
Foreign, current	19,235	10,464	3,199
Total current	297,923	149,030	285,088
Federal, deferred	94,991	36,157	(23,052)
State, deferred	3,958	(39)	(10,440)
Foreign, deferred	(8,085)	20,446	8,218
Total deferred	90,864	56,564	(25,274)
Total provision for income taxes	$ 388,787	$ 205,594	$ 259,814

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Debt and Other Financing Arrangements - Schedule of Debt and Other Financing Arrangements (Parenthetical) (Detail)	12 Months Ended
	Dec. 31, 2014
0.17% to 0.24%, variable, due from 2015 to 2040 [Member] | Industrial Revenue Bonds [Member]
Debt Instrument [Line Items]
Debt instrument interest rate - minimum	0.17%
Debt instrument interest rate - maximum	0.24%
Debt instrument - maturity year - start	2015
Debt instrument - maturity year - end	2040
Notes, 5.75%, Due 2017 [Member]
Debt Instrument [Line Items]
Debt instrument interest rate	5.75%
Debt instrument - maturity year	2017
Notes, 5.85%, Due 2018 [Member]
Debt Instrument [Line Items]
Debt instrument interest rate	5.85%
Debt instrument - maturity year	2018
Notes, 4.125%, Due 2022 [Member]
Debt Instrument [Line Items]
Debt instrument interest rate	4.125%
Debt instrument - maturity year	2022
Notes, 4.0%, Due 2023 [Member]
Debt Instrument [Line Items]
Debt instrument interest rate	4.00%
Debt instrument - maturity year	2023
Notes, 6.40%, Due 2037 [Member]
Debt Instrument [Line Items]
Debt instrument interest rate	6.40%
Debt instrument - maturity year	2037
Notes, 5.20%, Due 2043 [Member]
Debt Instrument [Line Items]
Debt instrument interest rate	5.20%
Debt instrument - maturity year	2043

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Equity Investments - Additional Information (Detail)	12 Months Ended			1 Months Ended			6 Months Ended	12 Months Ended					12 Months Ended						12 Months Ended
	Dec. 31, 2014 USD ($)	Dec. 31, 2013 USD ($)	Dec. 31, 2012 USD ($)	Dec. 31, 2014 Hunter Ridge Energy Services LLC [Member] USD ($)	Nov. 30, 2012 Hunter Ridge Energy Services LLC [Member]	Dec. 31, 2013 Hunter Ridge Energy Services LLC [Member] USD ($)	Jun. 30, 2012 Duferdofin Nucor S.r.l. [Member] USD ($)	Dec. 31, 2014 Duferdofin Nucor S.r.l. [Member] USD ($)	Dec. 31, 2013 Duferdofin Nucor S.r.l. [Member] USD ($)	Dec. 31, 2012 Duferdofin Nucor S.r.l. [Member] USD ($)	Dec. 31, 2014 Duferdofin Nucor S.r.l. [Member] EUR (€)	Dec. 31, 2013 Duferdofin Nucor S.r.l. [Member] EUR (€)	Dec. 31, 2014 Duferdofin Nucor S.r.l. [Member] Standby Medium Long Term Credit Facility [Member] USD ($)	Dec. 31, 2014 Duferdofin Nucor S.r.l. [Member] Standby Medium Long Term Credit Facility [Member] EUR (€)	Dec. 31, 2014 Duferdofin Nucor S.r.l. [Member] Facility A [Member] USD ($)	Dec. 31, 2014 Duferdofin Nucor S.r.l. [Member] Facility A [Member] EUR (€)	Dec. 31, 2013 Duferdofin Nucor S.r.l. [Member] Facility A [Member] USD ($)	Dec. 31, 2013 Duferdofin Nucor S.r.l. [Member] Facility A [Member] EUR (€)	Dec. 31, 2014 NuMit LLC [Member] USD ($)	Dec. 31, 2013 NuMit LLC [Member] USD ($)	Dec. 31, 2014 Steel Technologies LLC [Member] USD ($) Sheet	Dec. 31, 2013 Steel Technologies LLC [Member] USD ($)
Schedule of Equity Method Investments [Line Items]
Equity method investment	$ 872,500,000	$ 936,000,000		$ 138,600,000		$ 134,500,000		$ 412,900,000	$ 465,400,000										$ 301,500,000	$ 318,400,000
Period used for lag basis, in months				1 month	1 month			1 month											1 month
Equity method investment, ownership percentage				50.00%	50.00%			50.00%											50.00%
Equity method investments, share of net assets								57,400,000
Basis difference due to the step-up to fair value of certain assets and liabilities								355,500,000
Step-up to fair value of equity method investment, portion related to identification of goodwill								293,200,000
Amortization expense and other purchase accounting adjustments due to fair value step-up	72,423,000	74,356,000	73,011,000					10,500,000	11,200,000	11,100,000
Due from related parties, noncurrent								42,500,000	48,200,000		35,000,000	35,000,000
Notes receivable, related parties, interest rate								1.34%
Interest rate per year in excess of Euribor as of date of the notes								1.00%
Equity method investments note payable with parent company, maturity date								Jan. 31, 2016
Equity method investments credit facilities, amount															148,700,000	122,500,000
Total amount outstanding under equity method investments credit facilities													72,800,000	60,000,000	129,900,000	107,000,000	154,400,000	112,000,000
Line of credit facility, maturity period													Apr. 22, 2016	Apr. 22, 2016	Apr. 26, 2016	Apr. 26, 2016
Guarantor obligation percentage of exposure in case of default													50.00%	50.00%	50.00%	50.00%
Equity method investment, ownership percentage																					100.00%
Number of sheet processing facilities operated by Steel Technologies																					25
Notes receivable, related parties																						40,000,000
Line of credit extended to joint venture, amount outstanding																						17,000,000
Line of credit extended to joint venture																					100,000,000
Distributions from affiliates	53,738,000	8,708,000																	52,700,000	6,700,000
Impairment of equity method investments							$ 30,000,000

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Earnings Per Share - Computations of Basic and Diluted Net Earnings Per Share (Detail) (USD $) In Thousands, except Per Share data, unless otherwise specified	3 Months Ended								12 Months Ended
	Dec. 31, 2014	Oct. 04, 2014	Jul. 05, 2014	Apr. 05, 2014	Dec. 31, 2013	Sep. 28, 2013	Jun. 29, 2013	Mar. 30, 2013	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Earnings Per Share [Abstract]
Basic net earnings	$ 210,427	$ 245,447	$ 147,041	$ 111,031	$ 170,494	$ 147,597	$ 85,145	$ 84,789	$ 713,946	$ 488,025	$ 504,619
Earnings allocated to participating securities, Basic									(2,321)	(1,919)	(1,713)
Net earnings available to common stockholders									711,625	486,106	502,906
Average shares outstanding									319,838	319,077	318,172
Basic net earnings per share	$ 0.66	$ 0.76	$ 0.46	$ 0.35	$ 0.53	$ 0.46	$ 0.27	$ 0.26	$ 2.22	$ 1.52	$ 1.58
Diluted net earnings	210,427	245,447	147,041	111,031	170,494	147,597	85,145	84,789	713,946	488,025	504,619
Earnings allocated to participating securities, Diluted									(2,321)	(1,919)	(1,714)
Net earnings available to common stockholders									$ 711,625	$ 486,106	$ 502,905
Basic shares outstanding									319,838	319,077	318,172
Dilutive effect of stock options and other									289	189	68
Diluted average shares outstanding									320,127	319,266	318,240
Diluted net earnings per share	$ 0.65	$ 0.76	$ 0.46	$ 0.35	$ 0.53	$ 0.46	$ 0.27	$ 0.26	$ 2.22	$ 1.52	$ 1.58

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Valuation and Qualifying Accounts

12 Months Ended

Dec. 31, 2014

Valuation and Qualifying Accounts [Abstract]

Valuation and Qualifying Accounts

NUCOR CORPORATION

Financial Statement Schedule

SCHEDULE II – VALUATION AND QUALIFYING ACCOUNTS (in thousands)

Description	Balance at beginning of year		Additions charged to costs and expenses		Deductions			Balance at end of year
Year ended December 31, 2014
LIFO Reserve	$	624,685	$	—	$	(57,289	)	$	567,396
Year ended December 31, 2013
LIFO Reserve	$	607,240	$	17,445	$	—		$	624,685
Year ended December 31, 2012
LIFO Reserve	$	763,176	$	—	$	(155,936	)	$	607,240

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Acquisitions and Dispositions - Additional Information (Detail) (USD $)	1 Months Ended	12 Months Ended			0 Months Ended		1 Months Ended
	Aug. 31, 2012	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012	Oct. 08, 2014 T	Jun. 20, 2012	Dec. 31, 2014	Nov. 30, 2012
Business Acquisition [Line Items]
Goodwill attributed to the expected synergies		$ 2,068,664,000	$ 1,973,608,000	$ 2,004,538,000			$ 2,068,664,000
Loss on assets	17,600,000	25,393,000	14,000,000	17,563,000
Equity method investment, carrying amount		872,500,000	936,000,000				872,500,000
Business acquisition purchase price		768,581,000		760,833,000
Gallatin Steel Company [Member]
Business Acquisition [Line Items]
Business acquisition purchase price					779,100,000
Annual production capacity					1,800,000
Goodwill attributed to the expected synergies					98,505,000
Skyline Steel LLC [Member]
Business Acquisition [Line Items]
Business acquisition purchase price						675,400,000
Goodwill attributed to the expected synergies						138,579,000
Cash received as a result of acquisition						0
Hunter Ridge Energy Services LLC [Member]
Business Acquisition [Line Items]
Equity method investment, ownership percentage		50.00%					50.00%	50.00%
Equity method investment, carrying amount		138,600,000	134,500,000				138,600,000
Period used for lag basis, in months							1 month	1 month
Other Minor Acquisitions [Member]
Business Acquisition [Line Items]
Business acquisition purchase price		38,500,000	0	85,400,000
Steel Mills [Member]
Business Acquisition [Line Items]
Goodwill attributed to the expected synergies		594,402,000	495,897,000	407,045,000			594,402,000
Steel Mills [Member] | Gallatin Steel Company [Member]
Business Acquisition [Line Items]
Goodwill attributed to the expected synergies					98,500,000
Goodwill expected to be deductible for tax purposes					87,600,000
Steel Mills [Member] | Skyline Steel LLC [Member]
Business Acquisition [Line Items]
Goodwill attributed to the expected synergies						138,600,000
Goodwill expected to be deductible for tax purposes						128,200,000
Commercial Paper [Member] | Gallatin Steel Company [Member]
Business Acquisition [Line Items]
Approximate amount of commercial paper issued					$ 300,000,000

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Debt and Other Financing Arrangements

12 Months Ended

Dec. 31, 2014

Debt Disclosure [Abstract]

Debt and Other Financing Arrangements

12. Debt and Other Financing Arrangements

	(in thousands)
	December 31,
	2014			2013
Industrial revenue bonds:
0.17% to 0.24%, variable, due from 2015 to 2040	$	1,026,935		$	1,030,200
Notes, 5.75%, due 2017		600,000			600,000
Notes, 5.85%, due 2018		500,000			500,000
Notes, 4.125%, due 2022		600,000			600,000
Notes, 4.0%, due 2023		500,000			500,000
Notes, 6.40%, due 2037		650,000			650,000
Notes, 5.20%, due 2043		500,000			500,000
		4,376,935			4,380,200
Less current maturities		(16,335	)		(3,300	)
	$	4,360,600		$	4,376,900

Annual aggregate long-term debt maturities are: $16.3 million in 2015; none in 2016; $600.0 million in 2017; $500.0 million in 2018; none in 2019 and $3.261 billion thereafter.

In October 2014, Nucor issued approximately $300 million of commercial paper to partially fund the acquisition of Gallatin. As of December 31, 2014, $151.4 million was outstanding under the commercial paper program with a weighted average interest rate of 0.30% (none at December 31, 2013). All outstanding commercial paper instruments mature within 90 days, the balance of which is presented in short-term debt in the consolidated balance sheet.

In 2013, Nucor issued $500.0 million of 4.00% notes due in 2023 and $500.0 million of 5.20% notes due in 2043. Net proceeds of the issuances were $991.5 million. Costs of $8.5 million associated with the issuances were capitalized and are being amortized over the life of the notes.

Nucor amended its $1.50 billion unsecured revolving credit facility in 2013 to extend the maturity date from December 2016 to August 2018. The unsecured revolving credit facility provides up to $1.50 billion in revolving loans and allows up to $500.0 million in additional commitments at Nucor’s election in accordance with the terms set forth in the credit agreement. Up to the equivalent of $850.0 million of the credit facility is available for foreign currency loans, up to $500.0 million is available for the issuance of letters of credit and up to $500.0 million is available for the issuance of revolving loans for Nucor subsidiaries in accordance with terms set forth in the credit agreement. The credit facility provides for a pricing grid based upon the credit rating of Nucor’s senior unsecured long-term debt and, alternatively, interest rates quoted by lenders in connection with competitive bidding. The credit facility includes customary financial and other covenants, including a limit on the ratio of funded debt to capital of 60%, a limit on Nucor’s ability to pledge the Company’s assets and a limit on consolidations, mergers and sales of assets. As of December 31, 2014, Nucor’s funded debt to total capital ratio was 36%, and Nucor was in compliance with all covenants under the credit facility. No borrowings were outstanding under the credit facility as of December 31, 2014 and 2013.

Harris Steel has credit facilities totaling approximately $30.2 million, with $1.5 million outstanding at December 31, 2014 (none at December 31, 2013). In addition, the business of Nucor Trading S.A. is financed by uncommitted trade credit arrangements with a number of European banking institutions. As of December 31, 2014, Nucor Trading S.A. had outstanding borrowings of $54.6 million, which is presented in short-term debt in the consolidated balance sheets ($29.2 million at December 31, 2013). In addition, $38.5 million of the amount outstanding at December 31, 2014 ($29.1 million at December 31, 2013) was guaranteed by Nucor, the fair value of such guarantee is immaterial. If Nucor Trading S.A. fails to pay when due any amounts for which it is obligated, Nucor could be required to pay such amounts pursuant to and in accordance with the terms of the guarantee. Nucor has not recorded any liability associated with the guarantee.

Letters of credit totaling $42.2 million were outstanding as of December 31, 2014, related to certain obligations, including workers’ compensation, utilities deposits and credit arrangements by Nucor Trading S.A. for commitments to purchase inventories.

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Stock-Based Compensation

12 Months Ended

Dec. 31, 2014

Disclosure of Compensation Related Costs, Share-based Payments [Abstract]

Stock-Based Compensation

17. Stock-Based Compensation

Stock Options

Stock options may be granted to Nucor’s key employees, officers and non-employee directors with exercise prices at 100% of the market value on the date of the grant. The stock options granted are generally exercisable at the end of three years and have a term of 10 years. New shares are issued upon exercise of stock options.

A summary of activity under Nucor’s stock option plans is as follows:

	(shares in thousands)
	2014					2013				2012
	Shares			Weighted- Average Exercise Price		Shares		Weighted- Average Exercise Price		Shares			Weighted- Average Exercise Price
Number of shares under option:
Outstanding at beginning of year		2,089		$	40.47		1,543	$	39.03		1,156		$	38.26
Granted		469		$	50.63		546	$	44.51		741		$	35.76
Exercised		(136	)	$	41.30		—		—		(354	)	$	29.67
Canceled		—			—		—		—		—			—
Outstanding at end of year		2,422		$	42.39		2,089	$	40.47		1,543		$	39.03
Options exercisable at end of year		1,263		$	40.40		1,012	$	39.75		—			—

The shares reserved for future grants as of December 31, 2014, 2013 and 2012 are reflected in the restricted stock units table below. The total intrinsic value of options (the amount by which the stock price exceeded the exercise price of the option on the date of exercise) that were exercised during 2014 was $2.0 million (none in 2013 and $4.3 million in 2012).

The following table summarizes information about stock options outstanding at December 31, 2014:

					(shares in thousands)
Exercise Price	Options Outstanding		Options Exercisable		Weighted- Average Remaining Contractual Life
$35.76		689		391		7.4 years
$41.43		242		242		5.4 years
$42.34		530		530		6.3 years
$44.51		506		80		8.4 years
$50.63		455		20		9.0 years
$35.76 - $50.63		2,422		1,263		7.5 years

As of December 31, 2014, the total aggregate intrinsic value of options outstanding and options exercisable was $16.9 million and $11.0 million, respectively.

The grant date fair value of options granted was $17.48 per share in 2014 ($15.03 per share in 2013 and $11.40 per share in 2012). The fair value was estimated using the Black-Scholes option-pricing model with the following assumptions:

	2014			2013			2012
Exercise price	$	50.63		$	44.51		$	35.76
Expected dividend yield		2.92	%		3.30	%		4.08	%
Expected stock price volatility		45.00	%		46.94	%		48.99	%
Risk-free interest rate		2.03	%		1.51	%		1.06	%
Expected life (in years)		6.5			6.5			6.5

Stock options granted to employees who are eligible for retirement on the date of grant are expensed immediately since these awards vest upon retirement from the Company. Retirement, for purposes of vesting in these stock options, means termination of employment after satisfying age and years of service requirements. Similarly, stock options granted to employees who will become retirement-eligible prior to the end of the vesting term are expensed over the period through which the employee will become retirement-eligible. Compensation expense for stock options granted to employees who are not retirement-eligible is recognized on a straight-line basis over the vesting period. Compensation expense for stock options was $7.7 million in 2014 ($8.6 million in 2013 and $9.9 million in 2012). As of December 31, 2014, unrecognized compensation expense related to options was $0.5 million, which is expected to be recognized over 2.4 years.

Restricted Stock Units

Nucor annually grants restricted stock units (RSUs) to key employees, officers and non-employee directors. The RSUs typically vest and are converted to common stock in three equal installments on each of the first three anniversaries of the grant date. A portion of the RSUs awarded to officers vest upon the officer’s retirement. Retirement, for purposes of vesting in these units only, means termination of employment with approval of the Compensation and Executive Development Committee of the Board of Directors after satisfying age and years of service requirements. RSUs granted to non-employee directors are fully vested on the grant date and are payable to the non-employee director in the form of common stock after the termination of the director’s service on the Board of Directors.

RSUs granted to employees who are eligible for retirement on the date of grant are expensed immediately, and RSUs granted to employees who will become retirement-eligible prior to the end of the vesting term are expensed over the period through which the employee will become retirement-eligible since these awards vest upon retirement from the Company. Compensation expense for RSUs granted to employees who are not retirement-eligible is recognized on a straight-line basis over the vesting period.

Cash dividend equivalents are paid to participants each quarter. Dividend equivalents paid on units expected to vest are recognized as a reduction in retained earnings.

The fair value of the RSUs is determined based on the closing stock price of Nucor’s common stock on the day before the grant. A summary of Nucor’s restricted stock unit activity is as follows:

	(shares in thousands)
	2014					2013					2012
	Shares			Grant Date Fair Value		Shares			Grant Date Fair Value		Shares			Grant Date Fair Value
Restricted stock units:
Unvested at beginning of year		1,122		$	42.51		1,106		$	40.80		962		$	46.09
Granted		655		$	50.63		789		$	44.51		1,101		$	35.76
Vested		(752	)	$	44.90		(762	)	$	42.15		(915	)	$	40.36
Canceled		(13	)	$	42.66		(11	)	$	39.08		(42	)	$	39.41
Unvested at end of year		1,012		$	45.98		1,122		$	42.51		1,106		$	40.80
Shares reserved for future grants (stock options and RSUs)		11,851					10,486					11,839

Compensation expense for RSUs was $32.6 million in 2014 ($32.6 million in 2013 and $34.2 million in 2012). The total fair value of shares vested during 2014 was $38.1 million ($34.1 million in 2013 and $33.1 million in 2012). As of December 31, 2014, unrecognized compensation expense related to unvested RSUs was $29.3 million, which is expected to be recognized over a weighted-average period of two years.

Restricted Stock Awards

Nucor’s Senior Officers Long-Term Incentive Plan (the LTIP) and Annual Incentive Plan (the AIP) authorize the award of shares of common stock to officers subject to certain conditions and restrictions.

The LTIP provides for the award of shares of restricted common stock at the end of each LTIP performance measurement period at no cost to officers if certain financial performance goals are met during the period. One-third of the LTIP restricted stock award vests upon each of the first three anniversaries of the award date or, if earlier, upon the officer’s attainment of age 55 while employed by Nucor. Although participants are entitled to cash dividends and may vote such awarded shares, the sale or transfer of such shares is limited during the restricted period.

The AIP provides for the payment of annual cash incentive awards. An AIP participant may elect, however, to defer payment of up to one-half of an annual incentive award. In such event, the deferred AIP award is converted into common stock units and credited with a deferral incentive, in the form of additional common stock units, equal to 25% of the number of common stock units attributable to the deferred AIP award. Common stock units attributable to deferred AIP awards are fully vested. Common stock units credited as a deferral incentive vest upon the AIP participant’s attainment of age 55 while employed by Nucor. Vested common stock units are paid to AIP participants in the form of shares of common stock following their termination of employment with Nucor.

A summary of Nucor’s restricted stock activity under the AIP and LTIP is as follows:

	(shares in thousands)
	2014					2013					2012
	Shares			Grant Date Fair Value		Shares			Grant Date Fair Value		Shares			Grant Date Fair Value
Restricted stock awards and units:
Unvested at beginning of year		73		$	45.49		72		$	43.72		94		$	42.46
Granted		127		$	50.35		122		$	47.36		122		$	42.20
Vested		(135	)	$	48.76		(121	)	$	46.32		(144	)	$	41.62
Canceled		—			—		—			—		—			—
Unvested at end of year		65		$	48.20		73		$	45.49		72		$	43.72
Shares reserved for future grants		1,111					1,238					1,360

Compensation expense for common stock and common stock units awarded under the AIP and LTIP is recorded over the performance measurement and vesting periods based on the anticipated number and market value of shares of common stock and common stock units to be awarded. Compensation expense for anticipated awards based upon Nucor’s financial performance, exclusive of amounts payable in cash, was $6.1 million in 2014 ($6.3 million in 2013 and $6.6 million in 2012). The total fair value of shares vested during 2014 was $6.8 million ($5.7 million in 2013 and $6.0 million in 2012). As of December 31, 2014, unrecognized compensation expense related to unvested restricted stock awards was $0.8 million, which is expected to be recognized over a weighted-average period of 1.7 years.

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Segments - Schedule of Net Sale by Product to External Customers (Detail) (USD $) In Thousands, unless otherwise specified	3 Months Ended								12 Months Ended
	Dec. 31, 2014	Oct. 04, 2014	Jul. 05, 2014	Apr. 05, 2014	Dec. 31, 2013	Sep. 28, 2013	Jun. 29, 2013	Mar. 30, 2013	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Segment Reporting Information [Line Items]
Net sales to external customers	$ 5,003,753	$ 5,701,869	$ 5,291,075	$ 5,108,444	$ 4,894,750	$ 4,940,936	$ 4,665,588	$ 4,550,772	$ 21,105,141	$ 19,052,046	$ 19,429,273
Sheet [Member]
Segment Reporting Information [Line Items]
Net sales to external customers									5,988,303	5,219,464	5,540,868
Bar [Member]
Segment Reporting Information [Line Items]
Net sales to external customers									4,051,171	3,730,328	3,999,911
Structural [Member]
Segment Reporting Information [Line Items]
Net sales to external customers									2,617,196	2,558,538	2,301,778
Plate [Member]
Segment Reporting Information [Line Items]
Net sales to external customers									2,066,972	1,803,618	1,939,240
Steel Products [Member]
Segment Reporting Information [Line Items]
Net sales to external customers									4,032,385	3,607,333	3,738,381
Raw Materials [Member]
Segment Reporting Information [Line Items]
Net sales to external customers									$ 2,349,114	$ 2,132,765	$ 1,909,095

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Nature of Operations and Basis of Presentation - Additional Information (Detail) (Nucor-Yamato Steel Company [Member])	Dec. 31, 2014
Nucor-Yamato Steel Company [Member]
Summary Of Organization And Operations [Line Items]
Majority ownership percentage	51.00%

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Fair Value Measurements (Tables)

12 Months Ended

Dec. 31, 2014

Fair Value Disclosures [Abstract]

Schedule of Financial Assets and Financial Liabilities Measured at Fair Value

The following table summarizes information regarding Nucor’s financial assets and financial liabilities that are measured at fair value as of December 31, 2014 and 2013 (in thousands). Nucor does not have any non-financial assets or liabilities that are measured at fair value on a recurring basis.

				Fair Value Measurements at Reporting Date Using
Description	Carrying Amount in Consolidated Balance Sheets			Quoted Prices in Active Markets for Identical Assets (Level 1)		Significant Other Observable Inputs (Level 2)			Significant Unobservable Inputs (Level 3)
As of December 31, 2014
Assets:
Cash equivalents	$	861,656		$	861,656	$	—
Short-term investments		100,000			100,000		—
Foreign exchange and commodity contracts		2,228			—		2,228
Total assets	$	963,884		$	961,656	$	2,228		$	—
Liabilities:
Commodity contracts	$	(12,700	)	$	—	$	(12,700	)	$	—
As of December 31, 2013
Assets:
Cash equivalents	$	1,269,465		$	1,269,465
Short-term investments		28,191			28,191
Total assets	$	1,297,656		$	1,297,656		—			—
Liabilities:
Foreign exchange and commodity contracts	$	(555	)		—	$	(555	)		—

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Consolidated Statements of Comprehensive Income (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Statement Of Comprehensive Income [Abstract]
Net earnings	$ 815,790	$ 585,529	$ 593,126
Other comprehensive (loss) income:
Net unrealized loss on hedging derivatives, net of income taxes of ($4,900), $0 and ($1,100) for 2014, 2013 and 2012, respectively	(8,542)		(2,264)
Reclassification adjustment for loss on settlement of hedging derivatives included in net earnings, net of income taxes of $200, $0 and $25,000 for 2014, 2013 and 2012, respectively	542		42,515
Foreign currency translation (loss) gain, net of income taxes of $400, ($600) and $0 for 2014, 2013 and 2012, respectively	(141,530)	(53,619)	58,626
Adjustment to early retiree medical plan, net of income taxes of ($1,921), $2,547 and ($1,528) for 2014, 2013 and 2012, respectively	(4,228)	5,938	(3,646)
Reclassification adjustment for gain on early retiree medical plan included in net earnings, net of income taxes of ($557), $0 and $0 for 2014, 2013 and 2012, respectively	(1,030)
Net current-period other comprehensive (loss) income	(154,788)	(47,681)	95,231
Comprehensive income	661,002	537,848	688,357
Comprehensive income attributable to noncontrolling interests	(101,844)	(97,504)	(88,512)
Comprehensive income attributable to Nucor stockholders	$ 559,158	$ 440,344	$ 599,845

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Income Taxes - Deferred Tax Assets and Liabilities (Detail) (USD $) In Thousands, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013
Components of Deferred Tax Assets and Liabilities [Abstract]
Accrued liabilities and reserves	$ 154,381	$ 102,933
Allowance for doubtful accounts	24,741	19,756
Inventory	189,120	206,826
Post-retirement benefits	898	6,268
Commodity hedges	4,773
Net operating loss carryforward	9,880	12,859
Tax credit carryforwards	29,142	56,185
Total deferred tax assets	412,935	404,827
Holdbacks and amounts not due under contracts	(14,945)	(16,582)
Cumulative translation adjustments	(1,819)	(1,403)
Commodity hedges		(805)
Intangibles	(236,618)	(210,791)
Property, plant and equipment	(698,567)	(610,451)
Total deferred tax liabilities	(951,949)	(840,032)
Total net deferred tax liabilities	$ (539,014)	$ (435,205)

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Nature of Operations and Basis of Presentation

12 Months Ended

Dec. 31, 2014

Basis Of Presentation [Abstract]

Nature of Operations and Basis of Presentation

1. Nature of Operations and Basis of Presentation

Nature of Operations

Nucor is principally a manufacturer of steel and steel products, as well as a scrap broker and processor, with operating facilities and customers primarily located in North America.

Principles of Consolidation

The consolidated financial statements include Nucor and its controlled subsidiaries, including Nucor-Yamato Steel Company, a limited partnership of which Nucor owns 51%. All significant intercompany transactions are eliminated.

Distributions are made to noncontrolling interest partners in Nucor-Yamato Steel Company in accordance with the limited partnership agreement by mutual agreement of the general partners. At a minimum, sufficient cash is distributed so that each partner may pay their U.S. federal and state income taxes.

Use of Estimates

The preparation of financial statements in conformity with generally accepted accounting principles 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 these estimates.

Reclassifications

In the first quarter of 2013, we began reporting the results of Nucor’s steel trading businesses and rebar distribution businesses in the steel mills segment. Previously, these businesses were reported in an “All other” category. These businesses were reclassified to the steel mills segment as part of a realignment of Nucor’s reportable segments to better reflect the way in which they are managed. The segment data for the comparable periods has also been reclassified into the steel mills segment in order to conform to the current year presentation. The steel mills, steel products and raw materials segments are consistent with the way Nucor manages its business, which is based primarily upon the similarity of the types of products produced and sold by each segment. Additionally, the composition of assets by segment at December 31, 2012, was reclassified to conform with the current presentation. This reclassification between segments did not have any impact on the consolidated asset balances.

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Property, Plant and Equipment - Additional Information (Detail) (USD $)	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Property, Plant and Equipment [Line Items]
Property, plant and equipment net of accumulated depreciation, under a capital lease agreement	$ 22,800,000	$ 0
Gross property, plant and equipment acquired under capital lease	25,400,000
Total obligations associated with capital lease agreement	23,200,000	0
Capital lease obligations classified in accrued expenses and other current liabilities	2,200,000
Capital lease obligations classified in deferred credits and other liabilities	21,000,000
Property plant and equipment written down		21,000,000
Inventory written down		7,000,000
Insurance receivable		14,000,000
Associated net charges included in marketing, administrative and other expenses		14,000,000
Initial payments from insurance receivables	10,300,000
Property, plant and equipment, net	5,287,639,000	4,917,024,000
Interest expenses capitalized	2,900,000	10,900,000	4,700,000
Two remaining storage domes [Member]
Property, Plant and Equipment [Line Items]
Property, plant and equipment, net	20,000,000
Net Fixed Assets Associated with Anticipated Further Development Activities at the St. James Parish Site [Member]
Property, Plant and Equipment [Line Items]
Property, plant and equipment, net	$ 84,100,000	$ 84,100,000
Minimum [Member] | Land and Improvements [Member]
Property, Plant and Equipment [Line Items]
Estimated useful lives range	5 years
Minimum [Member] | Buildings and Improvements [Member]
Property, Plant and Equipment [Line Items]
Estimated useful lives range	4 years
Minimum [Member] | Machinery and Equipment [Member]
Property, Plant and Equipment [Line Items]
Estimated useful lives range	2 years
Maximum [Member] | Land and Improvements [Member]
Property, Plant and Equipment [Line Items]
Estimated useful lives range		25 years
Maximum [Member] | Buildings and Improvements [Member]
Property, Plant and Equipment [Line Items]
Estimated useful lives range		40 years
Maximum [Member] | Machinery and Equipment [Member]
Property, Plant and Equipment [Line Items]
Estimated useful lives range		15 years

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Interest Expense (Income) - Schedule of Components of Net Interest Expense (Detail) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Interest Revenue (Expense), Net [Abstract]
Interest expense	$ 174,142	$ 151,986	$ 173,503
Interest income	(4,886)	(5,091)	(11,128)
Interest expense, net	$ 169,256	$ 146,895	$ 162,375

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Derivative Financial Instruments - Fair Values of Derivative Instruments (Detail) (USD $) In Thousands, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013
Derivatives, Fair Value [Line Items]
Derivative Liabilities, Fair Value	$ (12,700)	$ (555)
Derivatives Designated as Hedging Instrument [Member]
Derivatives, Fair Value [Line Items]
Derivative Liabilities, Fair Value	(12,700)
Derivatives Not Designated as Hedging Instrument [Member]
Derivatives, Fair Value [Line Items]
Derivative Assets, Fair Value	2,228
Derivative Liabilities, Fair Value		(555)
Commodity Contracts [Member] | Derivatives Designated as Hedging Instrument [Member] | Accrued Expenses and Other Current Liabilities [Member]
Derivatives, Fair Value [Line Items]
Derivative Liabilities, Fair Value	(6,400)
Commodity Contracts [Member] | Derivatives Designated as Hedging Instrument [Member] | Deferred Credits and Other Liabilities [Member]
Derivatives, Fair Value [Line Items]
Derivative Liabilities, Fair Value	(6,300)
Commodity Contracts [Member] | Derivatives Not Designated as Hedging Instrument [Member] | Other Current Assets [Member]
Derivatives, Fair Value [Line Items]
Derivative Assets, Fair Value	1,856
Commodity Contracts [Member] | Derivatives Not Designated as Hedging Instrument [Member] | Accrued Expenses and Other Current Liabilities [Member]
Derivatives, Fair Value [Line Items]
Derivative Liabilities, Fair Value		(553)
Foreign Exchange Contracts [Member] | Derivatives Not Designated as Hedging Instrument [Member] | Other Current Assets [Member]
Derivatives, Fair Value [Line Items]
Derivative Assets, Fair Value	372
Foreign Exchange Contracts [Member] | Derivatives Not Designated as Hedging Instrument [Member] | Accrued Expenses and Other Current Liabilities [Member]
Derivatives, Fair Value [Line Items]
Derivative Liabilities, Fair Value		$ (2)

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Employee Benefit Plans

12 Months Ended

Dec. 31, 2014

Employee Benefit Plan [Abstract]

Employee Benefit Plans

18. Employee Benefit Plans

Nucor makes contributions to a Profit Sharing and Retirement Savings Plan for qualified employees based on the profitability of the Company. Nucor’s expense for these benefits totaled $110.1 million in 2014 ($71.7 million in 2013 and $77.7 million in 2012). The related liability for these benefits is included in salaries, wages and related accruals.

Nucor also has a medical plan covering certain eligible early retirees. The unfunded obligation, included in deferred credits and other liabilities in the consolidated balance sheets, totaled $14.1 million at December 31, 2014 ($9.9 million at December 31, 2013). The benefit associated with this early retiree medical plan totaled $0.6 million in 2014 (benefits of $0.6 million and $1.9 million in 2013 and 2012, respectively).

The discount rate used was 3.8% in 2014 (4.6% in 2013 and 3.7% in 2012). The health care cost increase trend rate used was 6.5% in 2014 (6.6% in both 2013 and 2012). The health care cost increase in the trend rate is projected to decline gradually to 4.5% by 2027.

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Contingencies - Additional Information (Detail) (USD $) In Millions, unless otherwise specified	0 Months Ended		12 Months Ended
	Jun. 01, 2014	Mar. 25, 2014 Defendant	Dec. 31, 2014 Defendant Complaints Manufacturers_Distributors	Dec. 31, 2013
Commitments and Contingencies Disclosure [Abstract]
Accrual for environmental loss contingencies, gross			$ 27.2	$ 22.9
Accrued environmental loss contingencies, current			11.3	6.9
Accrued environmental loss contingencies, noncurrent			15.9	16.0
Steel manufacturers, number of manufacturers			8
Additional complaints being filed in July and December of 2010			2
Complaints that are dismissed			2
Defendants that have entered into settlement agreements that are in the process of court approval			5
Number of co-defendants		5
Damages against all defendants jointly and severally	$ 160.8	$ 52.0

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Goodwill and Other Intangible Assets (Tables)

12 Months Ended

Dec. 31, 2014

Goodwill and Intangible Assets Disclosure [Abstract]

Schedule of Change in Net Carrying Amount of Goodwill by Segment

The change in the net carrying amount of goodwill for the years ended December 31, 2014 and 2013 by segment is as follows (in thousands):

	Steel Mills		Steel Products			Raw Materials		All Other			Total
Balance, December 31, 2012	$	407,045	$	805,416		$	703,225	$	88,852		$	2,004,538
Reclassifications		88,852		—			—		(88,852	)		—
Translation		—		(26,067	)		—		—			(26,067	)
Other		—		(4,863	)		—		—			(4,863	)
Balance, December 31, 2013		495,897		774,486			703,225		—			1,973,608
Acquisitions		98,505		—			—		—			98,505
Translation		—		(30,112	)		—		—			(30,112	)
Other		—		311			26,352		—			26,663
Balance, December 31, 2014	$	594,402	$	744,685		$	729,577	$	—		$	2,068,664

Schedule of Intangible Assets

Intangible assets with estimated lives of 5 to 22 years are amortized on a straight-line or accelerated basis and are comprised of the following (in thousands):

	December 31, 2014				December 31, 2013
	Gross Amount		Accumulated Amortization		Gross Amount		Accumulated Amortization
Customer relationships	$	1,199,942	$	454,353	$	1,147,786	$	391,254
Trademarks and trade names		158,584		48,356		151,332		40,397
Other		22,823		16,547		21,869		15,182
	$	1,381,349	$	519,256	$	1,320,987	$	446,833

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Current Liabilities

12 Months Ended

Dec. 31, 2014

Liabilities, Current [Abstract]

Current Liabilities

11. Current Liabilities

Book overdrafts, included in accounts payable in the consolidated balance sheets, were $107.9 million at December 31, 2014 ($81.6 million at December 31, 2013). Dividends payable, included in accrued expenses and other current liabilities in the consolidated balance sheets, were $119.7 million at December 31, 2014 ($118.7 million at December 31, 2013).