10-K

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 27, 2013

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 1-8022
CSX CORPORATION
(Exact name of registrant as specified in its charter)
Virginia		62-1051971
(State or other jurisdiction of incorporation or organization)		(I.R.S. Employer Identification No.)
500 Water Street, 15th Floor, Jacksonville, FL	32202	(904) 359-3200
(Address of principal executive offices)	(Zip Code)	(Telephone number, including area code)
Securities registered pursuant to Section 12(b) of the Act:
Title of each class	Name of exchange on which registered
Common Stock, $1 Par Value	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 (§ 232.405 of this chapter) 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 the 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.  (X)

Indicate by check mark whether the registrant is a large accelerated filer, an accelerated filer, a non-accelerated filer, or a smaller reporting company. (as defined in Exchange Act Rule 12b-2).

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 Exchange Act Rule 12b-2).

Yes (  ) No (X)

On June 28, 2013 (which is the last day of the second quarter and the required date to use), the aggregate market value of the Registrant’s voting stock held by non-affiliates was approximately $21 billion (based on the New York Stock Exchange closing price on such date).

There were 1,007,591,673 shares of Common Stock outstanding on January 24, 2014 (the latest practicable date that is closest to the filing date).

DOCUMENTS INCORPORATED BY REFERENCE

Portions of the Registrant’s Definitive Proxy Statement (the “Proxy Statement”) to be filed no later than 120 days after the end of the fiscal year with respect to its annual meeting of shareholders scheduled to be held on May 7, 2014.

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CSX CORPORATION
FORM 10-K
TABLE OF CONTENTS
Item No.			Page
PART I
1.	Business		3
	1A. Risk Factors		6
	1B. Unresolved Staff Comments		11
2.	Properties		11
3.	Legal Proceedings		15
4.	Mine Safety Disclosures		15
	Executive Officers of the Registrant		15
PART II
5.	Market for Registrant's Common Equity, Related Stockholder Matters and Issuer Purchases of Equity Securities		17
6.	Selected Financial Data		20
7.	Management's Discussion and Analysis of Financial Condition and Results of Operations		21
		·  Strategic Overview	21
		·  2013 Highlights	25
		·  Financial Results of Operations	27
		·  Liquidity and Capital Resources	36
		·  Schedule of Contractual Obligations and Commercial Commitments	39
		·  Off-Balance Sheet Arrangements	40
		·  Critical Accounting Estimates	40
		·  Forward-Looking Statements	48
7A.	Quantitative and Qualitative Disclosures about Market Risk		50
8.	Financial Statements and Supplementary Data		51
9.	Changes in and Disagreements with Accountants on Accounting and Financial Disclosure		108
9A.	Controls and Procedures		108
9B.	Other Information		110
PART III
10.	Directors, Executive Officers and Corporate Governance		110
11.	Executive Compensation		110
12.	Security Ownership of Certain Beneficial Owners and Management and Related Stockholder Matters		110
13.	Certain Relationships and Related Transactions, and Director Independence		110
14.	Principal Accounting Fees and Services		110
PART IV
15.	Exhibits, Financial Statement Schedules		111
Signatures			116

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CSX CORPORATION

PART I

Item 1.  Business

CSX Corporation (“CSX”), and together with its subsidiaries (the “Company”), based in Jacksonville, Florida, is one of the nation's leading transportation companies.  The Company provides rail-based transportation services including traditional rail service and the transport of intermodal containers and trailers.

The Company’s annual average number of employees was approximately 31,000 in 2013, which includes approximately 26,000 union employees.  Most of the Company’s employees provide or support transportation services.  

CSX Transportation, Inc.

CSX’s principal operating subsidiary, CSX Transportation, Inc. (“CSXT”), provides an important link to the transportation supply chain through its approximately 21,000 route mile rail network, which serves major population centers in 23 states east of the Mississippi River, the District of Columbia and the Canadian provinces of Ontario and Quebec.  It has access to over 70 ocean, river and lake port terminals along the Atlantic and Gulf Coasts, the Mississippi River, the Great Lakes and the St. Lawrence Seaway.  The Company’s intermodal business links customers to railroads via trucks and terminals. CSXT also serves thousands of production and distribution facilities through track connections to approximately 240 short-line and regional railroads.

Lines of Business

During 2013, CSXT’s transportation services generated $12.0 billion of revenue and served three primary lines of business:

• The merchandise business shipped nearly 2.8 million carloads and generated approximately 59% of revenue and 42% of volume in 2013. The Company’s merchandise business is the most diverse and transports aggregates (which include crushed stone, sand and gravel), metal, phosphate, fertilizer, food, consumer (manufactured goods and appliances), agricultural, automotive, paper and chemical products.

• The coal business shipped 1.2 million carloads and accounted for nearly 24% of revenue and 18% of volume in 2013.  The Company transports domestic coal, coke and iron ore to electricity-generating power plants, steel manufacturers and industrial plants as well as export coal to deep-water port facilities.  Almost half of export coal and nearly all of the domestic coal that the Company transports is used for generating electricity.

• The intermodal business accounted for approximately 14% of revenue and 40% of volume in 2013. The intermodal line of business combines the superior economics of rail transportation with the short-haul flexibility of trucks and offers a competitive cost advantage over long-haul trucking.  Through a network of more than 50 terminals, the intermodal business serves all major markets east of the Mississippi and transports mainly manufactured consumer goods in containers, providing customers with truck-like service for longer shipments.

Other revenue accounted for approximately 3% of the Company’s total revenue in 2013.  This revenue category includes revenue from regional subsidiary railroads, demurrage, revenue for customer volume commitments not met, switching and other incidental charges. Revenue from regional railroads includes shipments by railroads that the Company does not directly operate.  Demurrage represents charges assessed when freight cars are held beyond a specified period of time.  Switching revenue is primarily generated when CSXT switches cars for a customer or another railroad.

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PART I

Other Entities

In addition to CSXT, the Company’s subsidiaries include CSX Intermodal Terminals, Inc. (“CSX Intermodal Terminals”), Total Distribution Services, Inc. (“TDSI”), Transflo Terminal Services, Inc. (“Transflo”), CSX Technology, Inc. (“CSX Technology”) and other subsidiaries.   CSX Intermodal Terminals owns and operates a system of intermodal terminals, predominantly in the eastern United States and also performs drayage services (the pickup and delivery of intermodal shipments) for certain CSXT customers and trucking dispatch operations.  TDSI serves the automotive industry with distribution centers and storage locations.  Transflo connects non-rail served customers to the many benefits of rail by transferring products from rail to trucks.  Today, the biggest Transflo markets are chemicals and agriculture, which includes shipments of plastics and ethanol. CSX Technology and other subsidiaries provide support services for the Company.

CSX’s other holdings include CSX Real Property, Inc., a subsidiary responsible for the Company’s real estate sales, leasing, acquisition and management and development activities.  These activities are classified in other income because they are not considered by the Company to be operating activities.  Results of these activities fluctuate with the timing of non-operating real estate transactions.

Financial Information

See Item 7. Management’s Discussion and Analysis of Financial Condition and Results of Operations for operating revenue, operating income and total assets for each of the last three fiscal years.

Company History

A leader in freight rail transportation for more than 185 years, the Company’s heritage dates back to the early nineteenth century when The Baltimore and Ohio Railroad Company (“B&O”) – the nation’s first common carrier – was chartered in 1827. Since that time, the Company has built on this foundation to create a railroad that could safely and reliably service the ever-increasing demands of a growing nation.

Since its founding, numerous railroads have combined with the former B&O through merger and consolidation to create what has become CSX.  Each of the railroads that combined into the CSX family brought new geographical reach to valuable markets, gateways, cities, ports and transportation corridors.

CSX was incorporated in 1978 under Virginia law. In 1980, the Company completed the merger of the Chessie System and Seaboard Coast Line Industries into CSX.  The merger allowed the Company to connect northern population centers and Appalachian coal fields to growing southeastern markets.  Later, the Company’s acquisition of key portions of Conrail, Inc. allowed CSXT to link the northeast, including New England and the New York metropolitan area, with Chicago and midwestern markets as well as the growing areas in the southeast already served by CSXT.  This current rail network allows the Company to directly serve every major market in the eastern United States with safe, dependable, environmentally responsible and fuel efficient freight transportation and intermodal service.

Competition

The business environment in which the Company operates is highly competitive.  Shippers typically select transportation providers that offer the most compelling combination of service and price.  Service requirements, both in terms of transit time and reliability, vary by shipper and commodity. As a result, the Company’s primary competition varies by commodity, geographic location and mode of available transportation.

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CSX CORPORATION

PART I

CSXT’s primary rail competitor is Norfolk Southern Railway, which operates throughout much of the Company’s territory.   Other railroads also operate in parts of the Company’s territory.  Depending on the specific market, competing railroads and deregulated motor carriers may exert pressure on price and service levels.  For further discussion on the risk of competition to the Company, see Item 1A. Risk Factors.

Regulatory Environment

The Company's operations are subject to various federal, state, provincial (Canada) and local laws and regulations generally applicable to businesses operating in the United States and Canada.  In the U.S, the railroad operations conducted by the Company's subsidiaries, including CSXT, are subject to the regulatory jurisdiction of the Surface Transportation Board (“STB”), the Federal Railroad Administration (“FRA”), and its sister agency within the U.S. Department of Transportation, the Pipeline and Hazardous Materials Safety Administration (“PHMSA”).  Together, FRA and PHMSA have broad jurisdiction over railroad operating standards and practices, including track, freight cars, locomotives and hazardous materials requirements.  In addition, the U.S. Environmental Protection Agency (“EPA”) has regulatory authority with respect to matters that impact the Company's properties and operations.  The EPA is considering regulatory action directed towards the railroad industry governing the disposal of creosote cross-ties and seeking to increase air emission regulations that may impact our operations or increase costs. Similarly, the Transportation Security Administration (“TSA”), a component of the Department of Homeland Security, has broad authority over railroad operating practices that may have homeland security implications. In Canada, the railroad operations conducted by the Company’s subsidiaries, including CSXT, are subject to the regulatory jurisdiction of the Canadian Transportation Agency.

Although the Staggers Act of 1980 significantly deregulated the U.S. rail industry, the STB has broad jurisdiction over rail carriers.  The STB regulates routes, fuel surcharges, conditions of service, rates for non-exempt traffic, acquisitions of control over rail common carriers, and the transfer, extension or abandonment of rail lines, among other railroad activities.

In 2008, Congress enacted the Rail Safety Improvement Act (the “RSIA”).  The legislation includes a mandate that all Class I freight railroads implement an interoperable positive train control system (“PTC”) by December 31, 2015. Implementation of a PTC system is designed to prevent train-to-train collisions, over-speed derailments, incursions into established work-zone limits, and train diversions onto another set of tracks. In 2012, the Association of American Railroads ("AAR") advised the FRA on behalf of the industry that a nationwide interoperable PTC network could not be completed by the deadline. In 2012, the FRA revised its final rule on the design, operational requirements and implementation of PTC technology, and is now re-examining certain additional aspects of the rule in response to rail industry concerns. In 2012, the FRA filed a report with Congress stating that it also believed that the majority of railroads would not be able to complete PTC implementation by the 2015 deadline and recommending that Congress amend the RSIA to allow the FRA to grant conditional extensions of the 2015 deadline.

PTC must be installed on all main lines with passenger and commuter operations as well as most of those over which toxic-by-inhalation hazardous materials are transported.   The Company expects to incur significant capital costs in connection with the implementation of PTC as well as related ongoing operating expenses.   CSX currently estimates that the total multi-year cost of PTC implementation will be at least $1.7 billion for the Company. Total PTC spending through 2013 was $875 million.

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PART I

In 2012, the STB announced that it would accept comments on a proposal by the National Industrial Transportation League that would require Class I railroads to provide a form of "competitive access" to customers served solely by one railroad. Under this proposal, CSX would be required to allow a competing railroad to access certain customers that are currently solely served by CSX's network. In early 2013, shippers, railroads and other parties submitted comments on the proposal. After the comment period ended, the STB announced it would hold a hearing on the proposal, which is scheduled for March 25, 2014.

In July 2013, the STB released a decision that raised the limitations on the monetary recovery that a shipper may obtain when bringing a simplified rate reasonableness case. The STB also made a number of technical modifications to current rate case methodologies, including a change to the interest rate a railroad must pay when it is found to have assessed unreasonable rates and refunds are ordered. CSX and Norfolk Southern have filed a joint appeal to the D.C. Circuit, and a decision is expected by the end of 2014.

Implementation of either of these two proposals could have a material adverse effect on the Company's financial condition, results of operations and liquidity as well as its ability to invest in enhancing and maintaining vital infrastructure. For further discussion on regulatory risks to the Company, see Item 1A. Risk Factors.

Other Information

CSX makes available on its website www.csx.com, free of charge, its annual reports on Form 10-K, quarterly reports on Form 10-Q, current reports on Form 8-K and all amendments to those reports as soon as reasonably practicable after such reports are filed with or furnished to the Securities and Exchange Commission (“SEC”). The information on the CSX website is not part of this annual report on Form 10-K.  Additionally, the Company has posted its code of ethics on its website, which is also available to any shareholder who requests it.  This Form 10-K and other SEC filings made by CSX are also accessible through the SEC’s website at www.sec.gov.

CSX has included the certifications of its Chief Executive Officer (“CEO”) and the Chief Financial Officer (“CFO”) required by Section 302 of the Sarbanes-Oxley Act of 2002 (“the Act”) as Exhibit 31, as well as Section 906 of the Act as Exhibit 32 to this Form 10-K report. Additionally, on June 3, 2013, CSX filed its annual CEO certification with the New York Stock Exchange (“NYSE”) confirming CSX’s compliance with the NYSE Corporate Governance Listing Standards.  The CEO was not aware of any violations of these standards by CSX as of February 12, 2014.  This certification is also included as Exhibit 99 to this Form 10-K.

The information set forth in Item 6. Selected Financial Data is incorporated herein by reference. For additional information concerning business conducted by the Company during 2013, see Item 7. Management's Discussion and Analysis of Financial Condition and Results of Operations.

Item 1A.  Risk Factors

The risks set forth in the following risk factors could have a materially adverse effect on the Company's financial condition, results of operations or liquidity, and could cause those results to differ materially from those expressed or implied in the Company's forward-looking statements.  Additional risks and uncertainties not currently known to the Company or that the Company currently does not deem to be material also may materially impact the Company's financial condition, results of operations or liquidity.

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CSX CORPORATION

PART I

New legislation or regulatory changes could impact the Company's earnings or restrict its ability to independently negotiate prices.

Legislation passed by Congress or new regulations issued by federal agencies can significantly affect the revenues, costs and profitability of the Company's business.  For instance, several of the proposals under consideration by the STB could have a significant negative impact on the Company's ability to negotiate prices for the value of rail services provided and meet service standards, which could force a reduction in capital spending.  In addition, statutes imposing price constraints or affecting rail-to-rail competition could adversely affect the Company's profitability.

Government regulation and compliance risks may adversely affect the Company's operations and financial results.

The Company is subject to the jurisdiction of various regulatory agencies, including the STB, the FRA, PHMSA, TSA, EPA and other state, provincial and federal regulatory agencies for a variety of economic, health, safety, labor, environmental, tax, legal and other matters.  New rules or regulations by these agencies could increase the Company's operating costs or reduce operating efficiencies.  For example, the RSIA mandated that the installation of PTC be completed by December 31, 2015 on main lines that carry certain hazardous materials and on lines that have commuter or passenger operations.  Noncompliance with these and other applicable laws or regulations could erode public confidence in the Company and can subject the Company to fines, penalties and other legal or regulatory sanctions.

Climate change and other emissions-related legislation and regulation could adversely affect the Company's operations and financial results.

Climate change and other emissions-related legislation and regulation have been proposed and, in some cases adopted, on the federal, state, provincial and local levels.  These final and proposed laws and regulations take the form of restrictions, caps, taxes or other controls on emissions.  In particular, the EPA has issued various regulations and is expected to issue additional regulations targeting emissions, including rules and standards governing emissions from certain stationary sources and from vehicles.

Any of these pending or proposed laws or regulations could adversely affect the Company's operations and financial results by, among other things: (1) reducing coal-fired electricity generation due to mandated emission standards; (2) reducing the consumption of coal as a viable energy resource in the United States; (3) increasing the Company's fuel, capital and other operating costs and negatively affecting operating and fuel efficiencies; and (4) making it difficult for the Company's customers in the U.S. and Canada to produce products in a cost competitive manner (particularly in the absence of similar regulations in other manufacturing countries).  Any of these factors could reduce the amount of shipments the Company handles and have a material adverse effect on the Company's financial condition, results of operations or liquidity.

Capacity constraints could have a negative impact on service and operating efficiency.

CSXT may experience rail network difficulties related to: (i) increased passenger activities, including high-speed rail, in capacity-constrained areas, or (ii) regulatory changes impacting whenCSXT can transport freight or service routes, which could have a negative effect on CSXT's operational fluidity, leading to deterioration of service, asset utilization and overall efficiency.

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CSX CORPORATION

PART I

General economic conditions could negatively affect demand for commodities and other freight.

A decline in general domestic and global economic conditions that affect demand for the commodities and products the Company transports could reduce revenues or have other adverse effects.  For example, if the rate of economic growth in Asia slows or if European economies contract, U.S. export coal volume could be adversely impacted resulting in lower revenue for CSX. If the Company experiences significant declines in demand for its transportation services with respect to one or more commodities and products, the Company may experience reduced revenue and increased operating costs associated with the storage of locomotives, railcars and other equipment, workforce adjustments, and other related activities, which could have a material adverse effect on operations, financial condition and liquidity.

Changing dynamics in the U.S. energy markets could negatively impact profitability.

Over the past few years, production of natural gas in the U.S. has increased dramatically, which resulted in lower natural gas prices causing a negative impact on CSX. As a result of sustained low natural gas prices, coal-fired power plants have been displaced by natural gas-fired power generation facilities. If natural gas prices remain low, additional coal-fired plants could be displaced, which could further reduce the Company's domestic coal volumes and revenues.

CSXT, as a common carrier by rail, is required by law to transport hazardous materials, which could expose the Company to significant costs and claims.

A train accident involving the transport of hazardous materials could result in significant claims arising from personal injury, property or natural resource damage, environmental penalties and remediation obligations.  Such claims, if insured, could exceed existing insurance coverage or insurance may not continue to be available at commercially reasonable rates. Under federal regulations, CSXT is required to transport hazardous materials under the legal duty referred to as the common carrier mandate.    

CSXT is also required to comply with regulations regarding the handling of hazardous materials. In November 2008, the TSA issued final rules placing significant new security and safety requirements on passenger and freight railroad carriers, rail transit systems, and facilities that ship hazardous materials by rail.  Noncompliance with these rules can subject the Company to significant penalties and could be a factor in litigation arising out of a train accident.  Finally, legislation preventing the transport of hazardous materials through certain cities could result in network congestion and increase the length of haul for hazardous substances, which could increase operating costs, reduce operating efficiency or increase the risk of an accident involving the transport of hazardous materials.

The Company is subject to environmental laws and regulations that may result in significant costs.

The Company is subject to wide-ranging federal, state, provincial and local environmental laws and regulations concerning, among other things, emissions into the air,  ground and water, the handling, storage, use, generation, transportation and disposal of waste and other materials, the clean-up of hazardous material and petroleum releases, and the health and safety of our employees.  If we violate or fail to comply with these laws and regulations, we could be fined or otherwise sanctioned by regulators.  We can also be held liable for consequences arising out of human exposure to any hazardous substances for which we are responsible.  In certain circumstances, environmental liability can extend to formerly owned or operated properties, leased properties, adjacent properties and properties owned by third parties or Company predecessors, as well as to properties currently owned, leased or used by the Company.

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PART I

The Company has been, and may in the future, be subject to allegations or findings to the effect that it has violated, or is strictly liable under, environmental laws or regulations, and such violations can result in the Company's incurring fines, penalties or costs relating to the clean-up of environmental contamination. Although the Company believes it has appropriately recorded current and long-term liabilities for known and reasonably estimable future environmental costs, it could incur significant costs that exceed reserves or require unanticipated cash expenditures as a result of any of the foregoing.  The Company also may be required to incur significant expenses to investigate and remediate known, unknown or future environmental contamination.

The Company relies on the stability and availability of its technology systems to operate its business.

The Company relies on information technology in all aspects of its business.  The performance and reliability of the Company's technology systems are critical to its ability to operate and compete safely and effectively. A cybersecurity attack, which is a deliberate theft of data or impairment of information technology systems, or other significant disruption or failure could result in a service interruption, train accident, misappropriation of confidential information, process failure, security breach or other operational difficulties. Such an event could result in increased capital, insurance or operating costs, including increased security costs to protect the Company's infrastructure.  A disruption or compromise of the Company's information technology systems, even for short periods of time, could have a material adverse effect on the Company.

Disruption of the supply chain could negatively affect operating efficiency and increase costs.

The capital intensive nature and sophistication of core rail equipment (including rolling stock equipment, locomotives, rail, and ties) limits the number of railroad equipment suppliers.  If any of the current manufacturers stops production or experiences a supply shortage, CSXT could experience a significant cost increase or material shortage.  In addition, a few critical railroad suppliers are foreign and, as such, adverse developments in international relations, new trade regulations, disruptions in international shipping or increases in global demand could make procurement of these supplies more difficult or increase CSXT's operating costs.

Additionally, if a fuel supply shortage were to arise, whether due to production restrictions, lower refinery outputs, a disruption of oil imports, adverse political developments or otherwise, the Company would be negatively impacted.

Failure to complete negotiations on collective bargaining agreements could result in strikes and/or work stoppages.

Most of CSX's employees are represented by labor unions and are covered by collective bargaining agreements. Most of these agreements are bargained for nationally by the National Carriers Conference Committee and negotiated over the course of several years and previously have not resulted in any extended work stoppages.  Under the Railway Labor Act's procedures (which include mediation, cooling-off periods and the possibility of Presidential intervention), during negotiations neither party may take action until the procedures are exhausted.  If, however, CSX is unable to negotiate acceptable agreements, or if terms of existing agreements are disputed, the employees covered by the Railway Labor Act could strike, which could result in loss of business and increased operating costs as a result of higher wages or benefits paid to union members.  

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The Company faces competition from other transportation providers.

The Company experiences competition in pricing, service, reliability and other factors from various transportation providers including railroads and motor carriers that operate similar routes across its service area and, to a less significant extent, barges, ships and pipelines. Other transportation providers generally use public rights-of-way that are built and maintained by governmental entities, while CSXT and other railroads must build and maintain rail networks largely using internal resources. Any future improvements or expenditures materially increasing the quality or reducing the cost of alternative modes of transportation, or legislation providing for less stringent size or weight restrictions on trucks, could negatively impact the Company's competitive position.

Future acts of terrorism, war or regulatory changes to combat the risk of terrorism may cause significant disruptions in the Company's operations.

Terrorist attacks, along with any government response to those attacks, may adversely affect the Company's financial condition, results of operations or liquidity.  CSXT's rail lines or other key infrastructure may be direct targets or indirect casualties of acts of terror or war.  This risk could cause significant business interruption and result in increased costs and liabilities and decreased revenues.  In addition, premiums charged for some or all of the insurance coverage currently maintained by the Company could increase dramatically, or the coverage may no longer be available.

Furthermore, in response to the heightened risk of terrorism, federal, state and local governmental bodies are proposing and, in some cases, have adopted legislation and regulations relating to security issues that impact the transportation industry.  For example, the Department of Homeland Security adopted regulations that require freight railroads to implement additional security protocols when transporting hazardous materials.  Complying with these or future regulations could continue to increase the Company's operating costs and reduce operating efficiencies.

Severe weather or other natural occurrences could result in significant business interruptions and expenditures in excess of available insurance coverage.

The Company's operations may be affected by external factors such as severe weather and other natural occurrences, including floods, fires, hurricanes and earthquakes.  As a result, the Company's rail network may be damaged, its workforce may be unavailable, fuel costs may rise and significant business interruptions could occur.  In addition, the performance of locomotives and railcars could be adversely affected by extreme weather conditions.  Insurance maintained by the Company to protect against loss of business and other related consequences resulting from these natural occurrences is subject to coverage limitations, depending on the nature of the risk insured. This insurance may not be sufficient to cover all of the Company's damages or damages to others, and this insurance may not continue to be available at commercially reasonable rates. Even with insurance, if any natural occurrence leads to a catastrophic interruption of service, the Company may not be able to restore service without a significant interruption in operations.

The Company may be subject to lawsuits that could result in significant expenditures.

The Company is subject to various claims and lawsuits, including putative class action litigation alleging violations of antitrust laws.  The Company may experience material judgments or incur significant costs to defend existing and future lawsuits.  Additionally, existing litigation may suffer adverse developments not currently reflected in the Company's reserve estimates as the ultimate outcome of existing litigation is subject to numerous factors outside of the Company's control.  Final judgments or settlement amounts may differ materially from the recorded reserves.

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PART I

Increases in the number and magnitude of property damage and personal injury claims could adversely affect the Company's operating results.

The Company faces inherent business risk from exposure to occupational and personal injury claims, property damage, including storm damage, and claims related to train accidents.  The Company may incur significant costs to restore these damages and defend such claims. 

Existing claims may suffer adverse developments not currently reflected in reserve estimates, as the ultimate outcome of existing claims is subject to numerous factors outside of the Company's control. Although the Company establishes reserves and maintains insurance to cover these types of claims, final amounts determined to be due on any outstanding matters may differ materially from the recorded reserves and exceed the Company's insurance coverage.

Item 1B.  Unresolved Staff Comments

None

Item 2.  Properties

The Company’s properties primarily consist of track and its related infrastructure, locomotives and freight cars and equipment.  These categories and the geography of the network are described below.

Track and Infrastructure

Serving 23 states, the District of Columbia, and the Canadian provinces of Ontario and Quebec, the CSXT rail network serves, among other markets, New York, Philadelphia and Boston in the northeast and mid-Atlantic, the southeast markets of Atlanta, Miami and New Orleans, and the midwestern cities of St. Louis, Memphis and Chicago.

CSXT’s track structure includes main thoroughfares, connecting terminals and yards (known as mainline track), track within terminals and switching yards, track adjacent to the mainlines used for passing trains, track connecting the mainline track to customer locations and track that diverts trains from one track to another known as turnouts.  Total track miles are greater than CSXT’s approximately 21,000 route miles, which reflect the size of CSXT’s network that connects markets, customers and western railroads.  At December 2013, the breakdown of track miles was as follows:

	Track
	Miles
Mainline track	26,411
Terminals and switching yards	9,420
Passing sidings and turnouts	921
Total	36,752

In addition to its physical track structure, CSXT operates numerous yards and terminals.  These serve as the hubs between CSXT and its local customers and as sorting facilities where railcars often are received, re-sorted and placed onto new outbound trains. 

The Company’s ten largest yards and terminals based on annual volume (number of railcars or intermodal containers processed) are listed below:

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Yards and Terminals	Annual Volume (number of units processed)
Chicago, IL	1,009,525
Waycross, GA	667,807
Selkirk, NY	584,905
Willard, OH	532,524
Cincinnati, OH	512,981
Indianapolis, IN	505,854
Hamlet, NC	471,061
Nashville, TN	453,273
Louisville, KY	378,101
Toledo, OH	375,595

Network Geography

CSXT’s operations are primarily focused on four major transportation networks and corridors which are defined geographically and by commodity flows below.

Interstate 90 (I-90) Corridor – This CSXT corridor links Chicago and the Midwest to metropolitan areas in New York and New England.  This route, also known as the “waterlevel route,” has minimal hills and grades and nearly all of it has two main tracks (referred to as double track).  These superior engineering attributes permit the corridor to support consistent, high-speed intermodal, automotive and merchandise service.  This corridor is a primary route for import traffic coming from the far east through western ports moving eastward across the country, through Chicago and into the population centers in the Northeast.  The I-90 Corridor is also a critical link between ports in New York, New Jersey, and Pennsylvania and consumption markets in the Midwest.  This route carries consumer goods from all three of the Company’s major markets – merchandise, coal and intermodal.

Interstate 95 (I-95) Corridor – The CSXT I-95 Corridor connects Charleston, Jacksonville, Miami and many other cities throughout the Southeast with the heavily populated mid-Atlantic and northeastern cities of Baltimore, Philadelphia and New York.  CSXT primarily transports food and consumer products, as well as metals and chemicals along this line.  It is the only rail corridor along the eastern seaboard south of the District of Columbia, and provides access to major eastern ports.

Southeastern Corridor – This critical part of the network runs between CSXT’s western gateways of Chicago, St. Louis and Memphis through the cities of Nashville, Birmingham, and Atlanta and markets in the Southeast.  The Southeastern Corridor is the premier rail route connecting these key cities, gateways, and markets and positions CSXT to efficiently handle projected traffic volumes of intermodal, automotive and general merchandise traffic.  The corridor also provides direct rail service between the coal reserves of the southern Illinois basin and the demand for coal in the Southeast.

Coal Network– The CSXT coal network connects the coal mining operations in the Appalachian mountain region and Illinois basin with industrial areas in the Northeast and Mid-Atlantic, as well as many river, lake, and deep water port facilities.  CSXT’s coal network is well positioned to supply utility markets in both the Northeast and Southeast and to transport coal shipments for export outside of the U.S.  Almost half the tons of export coal and nearly all of the domestic coal that the Company transports is used for generating electricity.

See the following page for a map of the CSX Rail Network.

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CSX Rail Network

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Locomotives

CSXT operates more than 4,000 locomotives, of which over 97% are owned by CSXT.  Freight locomotives are the power source used primarily to pull trains.  Switching locomotives are used in yards to sort railcars so that the right railcar is attached to the right train in order to deliver it to its final destination.  Auxiliary units are typically used to provide extra traction for heavy trains in hilly terrain.  At December 2013, CSXT’s fleet of owned and long-term leased locomotives consisted of the following types of locomotives:

	Locomotives	%		Average Age (years)
Freight	3,730	87	%	20
Switching	320	8	%	33
Auxiliary Units	209	5	%	21
Total	4,259	100	%	20

Equipment

In 2013, the average daily fleet of cars on line consisted of approximately 182,000 cars. At any time over half of the railcars on the CSXT system are not owned or leased by the Company.  Examples of these non-CSXT railcars are as follows: railcars owned by other railroads (which are utilized by CSXT), shipper-furnished or private cars (which are generally used only in that shipper’s service) and multi-level railcars used to transport automobiles (which are shared among railroads). 

The Company’s revenue generating equipment (either owned or long-term leased) consists of freight cars and containers as described below.

Gondolas – Support CSXT’s metals markets and provide transport for woodchips and other bulk commodities.  Some gondolas are equipped with special hoods for protecting products like coil and sheet steel.

Open-top hoppers – Transport heavy dry bulk commodities such as coal, coke, stone, sand, ores and gravel that are resistant to weather conditions.

Box cars – Include a variety of tonnages, sizes, door configurations and heights to accommodate a wide range of finished products, including paper, auto parts, appliances and building materials.  Insulated box cars deliver food products, canned goods, beer and wine.

Covered hoppers – Have a permanent roof and are segregated based upon commodity density.  Lighter bulk commodities such as grain, fertilizer, flour, salt, sugar, clay and lime are shipped in large cars called jumbo covered hoppers.  Heavier commodities like cement, ground limestone and sand are shipped in small cube covered hoppers.

Multi-level flat cars – Transport finished automobiles and are differentiated by the number of levels: bi-levels for large vehicles such as pickup trucks and SUVs and tri-levels for sedans and smaller automobiles.

Flat cars – Used for shipping intermodal containers and trailers or bulk and finished goods, such as lumber, pipe, plywood, drywall and pulpwood.

Containers – Weather-proof boxes used for bulk shipment of freight.

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Other cars on the network consist primarily of refrigerated boxcars for transporting perishable items.  

At December 2013, the Company’s owned and long-term leased equipment consisted of the following:

Equipment	Number of Units	%
Gondolas	25,781	38	%
Open-top hoppers	12,077	18	%
Multi-level flat cars	11,246	16	%
Covered hoppers	10,014	15	%
Box cars	7,912	12	%
Flat cars	735	1	%
Other cars	243	—	%
Subtotal freight cars	68,008	100	%
Containers	17,569
Total equipment	85,577

 Item 3.  Legal Proceedings

For further details, please refer to Note 7. Commitments and Contingencies of this annual report on Form 10-K.

Item 4.  Mine Safety Disclosure

Not Applicable

Executive Officers of the Registrant

Executive officers of the Company are elected by the CSX Board of Directors and generally hold office until the next annual election of officers.  There are no family relationships or any arrangement or understanding between any officer and any other person pursuant to which such officer was elected.  As of the date of this filing, the executive officers’ names, ages and business experience are:

Name and Age	Business Experience During Past Five Years
Michael J. Ward, 63 Chairman, President and Chief Executive Officer	A 36-year veteran of the Company, Ward has served as Chairman, President and Chief Executive Officer of CSX since January 2003. Ward’s distinguished railroad career has included key executive positions in nearly all aspects of the Company’s business, including sales and marketing, operations and finance.
Fredrik J. Eliasson, 43 Executive Vice President and Chief Financial Officer	Eliasson has served as executive vice president and chief financial officer of CSX since January 2012 and is responsible for management and oversight of all financial and strategic planning activities, including accounting, financial planning, tax, treasury and investor relations. During his 18-year tenure with the Company, he has also served as Vice President of Sales and Marketing for CSX's chemicals and fertilizer business, Vice President of Emerging Markets, Vice President of Commercial Finance, and Vice President of Financial Planning and Analysis.

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Name and Age	Business Experience During Past Five Years
Oscar Munoz, 55 Executive Vice President and Chief Operating Officer	Munoz has been the executive vice president and chief operating officer of CSXT since January 2012. He manages all aspects of the Company's operations across its 21,000 route-mile rail network, including transportation, service design, customer service, engineering, mechanical and technology. During his ten-year tenure with the Company, he has also served as CSX’s Executive Vice President and Chief Financial Officer. Munoz brings to the Company more than 25 years of experience from a variety of industries. Before joining CSX in 2003, Munoz served as Chief Financial Officer and Vice President of AT&T Consumer Services. He also has held key executive positions with other consumer products companies, including the Coca-Cola Company and Pepsico Corporation.
Clarence W. Gooden, 62 Executive Vice President of Sales and Marketing and Chief Commercial Officer	Gooden has been the Executive Vice President and Chief Commercial Officer of CSX since April 2004. He is responsible for generating customer revenue, forecasting business trends and developing CSX’s model for future revenue growth. An employee of the Company for 43 years, Gooden has held key executive positions in both operations and sales and marketing.
Ellen M. Fitzsimmons, 53 Executive Vice President of Law and Public Affairs, General Counsel and Corporate Secretary	Fitzsimmons has been the Executive Vice President of Law and Public Affairs, General Counsel, and Corporate Secretary of CSX since December 2003.  She serves as the Company’s chief legal officer and oversees all government relations and public affairs activities as well as internal audit and other risk management functions. During her 22-year tenure with the Company, her broad responsibilities have included key roles in major risk and corporate governance-related areas.
Lisa A. Mancini, 54 Senior Vice President and Chief Administrative Officer	Mancini has been Senior Vice President and Chief Administrative Officer of CSX since January 2009. She is responsible for employee compensation and benefits, labor relations, employee staffing and development activities, purchasing, real estate, and facilities management.  She previously served as Vice President-Strategic Infrastructure Initiatives from 2007 to 2009 and, prior to that, Vice President – Labor Relations. Prior to joining CSX in 2003, Mancini served as Chief Operating Officer of the San Francisco Municipal Railway.
Carolyn T. Sizemore, 51 Vice President and Controller	Sizemore has served as Vice President and Controller of CSX since April 2002. She is responsible for financial and regulatory reporting, freight billing and collections, payroll, accounts payable and various other accounting processes. Sizemore’s responsibilities during her 24-year tenure with the Company have included roles in finance and audit-related areas including a variety of positions in accounting, finance strategies, budgets and performance analysis.

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

Market Information

CSX’s common stock is listed on the NYSE, which is its principal trading market, and is traded over-the-counter and on exchanges nationwide.  The official trading symbol is “CSX.” 

Description of Common and Preferred Stock

A total of 1.8 billion shares of common stock are authorized, of which 1,008,859,758 shares were outstanding as of December 2013.  Each share is entitled to one vote in all matters requiring a vote of shareholders.  There are no pre-emptive rights, which are privileges extended to select shareholders that would allow them to purchase additional shares before other members of the general public in the event of an offering.  At January 24, 2014, the latest practicable date, there were 34,379 common stock shareholders of record.  The weighted average of common shares outstanding, which was used in the calculation of diluted earnings per share, was approximately 1 billion as of December 27, 2013.  (See Note 2, Earnings Per Share.)

A total of 25 million shares of preferred stock is authorized, none of which is currently outstanding.

The following table sets forth, for the quarters indicated, the dividends declared and the high and low share prices of CSX common stock.

	Quarter
	1st		2nd		3rd		4th		Year
2013
Dividends	$	0.14	$	0.15	$	0.15	$	0.15	$	0.59
Common Stock Price
High	$	24.67	$	26.36	$	26.90	$	28.56	$	28.56
Low	$	19.36	$	22.40	$	22.89	$	25.04	$	19.36
2012
Dividends	$	0.12	$	0.14	$	0.14	$	0.14	$	0.54
Common Stock Price
High	$	23.71	$	23.02	$	23.49	$	21.76	$	23.71
Low	$	19.99	$	19.88	$	20.65	$	18.88	$	18.88

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Stock Performance Graph

The cumulative shareholder returns, assuming reinvestment of dividends, on $100 invested at December 31, 2008 are illustrated on the graph below.  The Company references the Standard & Poor 500 Stock Index (“S&P 500”), which is a registered trademark of the McGraw-Hill Companies, Inc., and the Dow Jones U.S. Transportation Average Index, which provide comparisons to a broad-based market index and other companies in the transportation industry.  As shown in the graph, CSX's five-year stock returns significantly outpaced those of the S&P 500.    

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CSX Purchases of Equity Securities

CSX is required to disclose any purchases of its own common stock for the most recent quarter. CSX purchases its own shares for two primary reasons: to further its goals under its share repurchase program and to fund the Company’s contribution required to be paid in CSX common stock under a 401(k) plan that covers certain union employees.

In April 2013, the Company announced a new $1 billion share repurchase program, which is expected to be completed by April 2015. Management's assessment of market conditions and pertinent facts guide the timing and volume of all repurchases. Future share repurchases are expected to be funded by cash on hand, cash generated from operations and debt issuances. During 2013, CSX repurchased $353 million, or 14 million in shares of common stock under this program.    

    Share repurchase activity of $129 million for the fourth quarter 2013 was as follows:

	CSX Purchases of Equity Securities for the Quarter
Fourth Quarter (a)	Total Number of Shares Purchased	Average Price Paid per Share		Total Number of Shares Purchased as Part of Publicly Announced Plans or Programs	Approximate Dollar Value of Shares that May Yet Be Purchased Under the Plans or Programs
Beginning Balance					$	775,934,722
October	1,608,434	$	25.79	1,608,434	734,448,792
November	1,561,100	26.59		1,561,100	692,943,873
December	1,654,900	27.58		1,654,900	647,302,905
Ending Balance	4,824,434	$	26.66	4,824,434	$	647,302,905

^{(a) Fourth quarter 2013 consisted of the following fiscal periods: October (September 28, 2013 - October 25, 2013), November (October 26, 2013 - November 22, 2013), December (November 23, 2013 - December 27, 2013).} 

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Item 6.  Selected Financial Data

Selected financial data related to the Company’s financial results for the last five fiscal years are listed below.

		Fiscal Years
(Dollars and Shares in Millions, Except Per Share Amounts)		2013			2012 (a)			2011 (a)			2010			2009
Financial Performance
	Revenue	$	12,026		$	11,763		$	11,795		$	10,636		$	9,041
	Expense	8,553			8,299			8,325			7,565			6,771
	Operating Income	$	3,473		$	3,464		$	3,470		$	3,071		$	2,270
Net Earnings from Continuing Operations (b)		1,864			1,863			1,854			1,563			1,128
	Operating Ratio	71.1		%	70.6		%	70.6		%	71.1		%	74.9		%
Net Earnings Per Share:
	From Continuing Operations, Basic (b)	$	1.83		$	1.80		$	1.71		$	1.37		$	0.96
	From Continuing Operations, Assuming Dilution (b)	1.83			1.79			1.70			1.35			0.95
Average Common Shares Outstanding
	Basic	1,019			1,038			1,083			1,143			1,176
	Assuming Dilution	1,019			1,040			1,089			1,154			1,187
Financial Position
	Cash, Cash Equivalents and Short-term Investments	$	1,079		$	1,371		$	1,306		$	1,346		$	1,090
	Total Assets	31,782			30,723			29,491			28,026			26,793
	Long-term Debt	9,022			9,052			8,734			8,051			7,895
	Shareholders' Equity	10,504			9,136			8,598			8,798			8,768
	Dividend Per Share	$	0.59		$	0.54		$	0.45		$	0.33		$	0.29
Additional Data
	Capital Expenditures (c)	$	2,313		$	2,341		$	2,297		$	1,840		$	1,586
	Employees -- Annual Averages	31,254			32,120			31,344			30,066			30,202

(a) See the revision of prior period financial statements in Note 1. Nature of Operations and Significant Accounting Policies.

(b) In 2009, CSX sold the stock of a subsidiary that indirectly owned Greenbrier Hotel Corporation. This sale resulted in net income from discontinued operations of $15 million, or $0.01 per share.

(c) Capital expenditures include investments related to reimbursable public-private partnerships. These investments of $40 million, $166 million, $102 million and $15 million in 2013, 2012, 2011 and 2010, respectively, are projects that are partially or wholly reimbursed to CSX through either government grants or other funding sources such as cash received from a property sale.  These reimbursements may not be fully received in a given year; therefore the timing of receipts may differ from the timing of the investment.  See the capital expenditures table on page 37 for additional information.

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

STRATEGIC OVERVIEW

CSX provides rail-based freight transportation services including traditional rail service, the transport of intermodal containers and trailers as well as other transportation services such as rail-to-truck transfers and bulk commodity operations with its approximately 31,000 dedicated employees. The Company and the rail industry provide customers with access to an expansive and interconnected transportation network that plays a key role in North American commerce and is critical to the economic success and improved global competitiveness of the United States. This improved competitiveness is driven by lower domestic energy prices from natural gas, increased foreign labor costs and supply chain factors.

The rail industry benefits from this improved global competitiveness, continued economic growth and the shift towards more rail-based solutions. U.S. demand to move more goods by rail is expected to rise and freight railroads provide the most environmentally-efficient and economical means to meet this growing demand. CSX can move a ton of freight about 450 miles on one gallon of diesel fuel, as trains are four times more fuel efficient than trucks on average. Shipping freight by rail also alleviates highway congestion, eases air pollution and saves energy.

CSX's network is positioned to reach nearly two-thirds of the U.S. population, which accounts for the majority of the nation's consumption of goods. Through this network, the Company transports a diverse portfolio of commodities and products to meet the country's needs. These products range from agricultural goods, such as grains, to chemicals, automobiles, metals, building materials, paper, consumer products, and energy sources like coal, ethanol and crude oil. The Company categorizes these products into three primary lines of business: merchandise, intermodal and coal. CSX's transportation solutions connect industries and population centers across the United States with each other and with global markets through access to over 70 port facilities whereby meeting the transportation needs of energy producers, manufacturers, industrial producers, construction companies, farmers and feed mills, wholesalers and retailers and the United States armed forces.

Strategic Growth Opportunities

Intermodal

CSX’s intermodal business is an economical and environmentally-friendly alternative to transporting freight on highways via truck. CSX’s intermodal network connects all major population centers east of the Mississippi River and is 90% cleared for the use of double-stack (two containers high) intermodal movements. This positions the Company to capture a significant share of the incremental domestic intermodal market opportunity, estimated at the nine million truckloads in the eastern United States that move over 550 miles. The Company’s highway-to-rail initiatives assist in capturing this traffic and also help customers identify conversion opportunities for both domestic moves and the U.S. portion of international moves.

CSX is capturing this opportunity by building new terminals and increasing network capacity to broaden its market presence in key growth areas. The Company's Northwest Ohio intermodal terminal, which started operations in 2011, is part of CSX's National Gateway initiative discussed below. This high-capacity terminal expands service offerings to customers, improves market access to and from east coast ports and consumption centers and enhances the fluidity of the network. During 2013, the Company opened or expanded terminals in Columbus, OH; Louisville, KY; Atlanta, GA; and Worcester, MA. The Company expects to open new terminals in Winter Haven, FL and Quebec, Canada in 2014. These projects further enhance the Company's intermodal offering and support future growth.

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Illinois Basin Coal Shift

Energy markets have shifted over the past few years and continue to evolve. In spite of recent declines in domestic utility coal consumption that primarily resulted from low natural gas prices, coal sourced from mines on the CSX network is now becoming more economical as natural gas prices have rebounded from historic lows. In addition, mining economics are causing a shift from Central Appalachian coal to thermal coal in the Illinois Basin and the Powder River Basin. To capitalize on these shifts, CSX continues to enhance its network to support these changes, such as adding sidings (track which enables trains on the same line to pass) and increasing yard capacity.

Export Coal

CSX export coal volume and pricing is subject to a high degree of volatility as a result of changes in the global economy, competition from foreign coal producers and regulatory shifts. Over the past few years, CSX has capitalized on the global coal demand in both steel manufacturing and power generation, which is expected to remain high over the long term as developing countries become more urbanized. The Company remains opportunistic based on the global markets and the resulting level of demand. In addition to the Company’s ready access to large U.S. coal suppliers and multiple port facilities, CSX expects to continue to enhance the operating efficiency of its export coal network which will favorably position the Company to capitalize on growth as it is made available.

New Energy Markets

The ongoing surge in shale drilling for the extraction of oil and natural gas has created the opportunity for CSX to serve new energy markets such as crude oil, liquefied petroleum gases (“LPG”), frac sand and other related materials. For example, CSX is capitalizing on the opportunity to move the growing supply of crude oil from the new domestic oil fields, particularly those located in the Bakken Shale region of North Dakota, to customers at eastern refineries. This service also provides greater flexibility in source locations as compared to pipelines.

CSX’s LPG market is also benefiting from drilling in the Utica Shale region, which underlies portions of Kentucky, Maryland, New York, Ohio, Pennsylvania, Tennessee, West Virginia and Virginia. Midstream energy companies, which are involved in the transportation, storage and wholesale of refined petroleum products, are taking advantage of the abundance of inexpensive wet gas with newly constructed gas processing plants (or “fractionators”) in the region. Rail will also play a vital role in moving LPG products from the fractionators to the market.

CSX’s frac sand market (a key input in the drilling process) has also expanded rapidly over the last few years. The Company has invested in new operating capacity such as railcars and terminals to accommodate this growth, which has been concentrated mainly in the Utica and Marcellus shale regions.   The CSX network not only provides access to many frac sand transload terminals located near the drilling activity but also offers the advantage of CSX-direct routes from several key sand producing regions to the frac sand terminals.

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Over the longer term, the improved energy supply outlook for the U.S. will create a sustainable competitive advantage for domestic chemical producers and generate additional growth opportunities for rail. Since natural gas is the primary component in the production of a wide range of petrochemicals, the supply growth and the resulting lower prices have now placed the U.S. amongst the lowest cost production regions in the world. This increased competitiveness is sparking significant investment in new U.S. chemical industry capacity for the first time in more than a decade. CSX is well-positioned to participate in this growing chemical business over the next several years.

Operating Initiatives

            In support of these growth opportunities, CSX is focused on meeting customers’ needs while improving profitability.  Several key operating initiatives have been implemented over the past several years that lay a foundation for meeting these objectives. Beginning with the ONE Plan, which was implemented nearly ten years ago, the Company is using advanced network modeling analytics and network tools to create a disciplined, scheduled approach to designing and running CSX's merchandise and automotive networks. The service improvements that continue to result from the implementation of the ONE Plan also drove CSX’s ability to deliver strong growth in the intermodal market. The ONE Plan continues to be used to identify the most efficient, cost-effective routes for CSXT customers' traffic while providing timely service with the fewest handlings and car miles possible.

The second initiative is Total Service Integration (“TSI”), which is intended to align operating capabilities with customers' needs to reduce loading and unloading times and create more capacity.  TSI was first implemented on the unit train network, where it has successfully increased the average number of cars per train and improved asset utilization.  CSX is now implementing TSI for the carload network, which focuses on improving the “first and last mile” service experience for carload customers, providing a more consistent and reliable service product. The carload network is connected to more than 5,000 customer facilities and has a high degree of variability each day. New tools and technology are allowing the company to more effectively communicate with customers, not only providing the service the Company has promised to deliver but proactively notifying the customer of service status. Applying TSI to the carload network will improve service consistency for each merchandise shipper.

The third initiative is Service Excellence, which is building a culture that engages all employees and focuses on the value delivered to customers through improved service.  The initiative increases employee communication and dialogue to help identify and resolve customer issues at the lowest level, improving the customer experience and allowing CSX to grow the business.  This process involves engagement from all operating employees, as well as collaboration with sales and marketing employees and, ultimately, with the Company’s customers. Higher levels of customer service and satisfaction support CSX’s ability to profitably grow the business by increasing customer retention, price sustainability and asset utilization. 

The fourth initiative is Enterprise Asset Management (“EAM”), which is a technology system that will help lower total cost of ownership and maximize the productivity and reliability of the railroad’s physical assets.   The focus of EAM is on locomotives, cars and infrastructure. Projects are currently in place to deploy technology, improve processes and reduce unproductive time. Because the railroad is an asset intensive industry, EAM helps reduce the overall expense associated with asset ownership by monitoring the overall condition of equipment, helping proactively schedule maintenance, increasing utilization and also effectively managing the investment required for new or replacement assets. The system is also streamlining CSX’s asset management operations to improve the time the asset is in service as well as improving CSX’s return on assets. The intent of this initiative is to deliver operating efficiencies and reduce future capital expenditures associated with asset replacement.

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Public-Private Partnerships

Expanding capacity on U.S. rail networks provides substantial public benefits including job creation, increased business activity at U.S. ports, reduced highway congestion and lower air emissions. Therefore, CSX and its government partners are jointly working to invest in multi-year rail infrastructure projects such as the National Gateway. This initiative is a public-private partnership which will increase intermodal capacity and create substantial environmental and efficiency advantages by clearing key corridors between Mid-Atlantic ports and the Midwest for double-stack intermodal trains. Other examples of the Company’s public-private partnerships are the nearly completed transactions with the Commonwealth of Massachusetts and the state of Florida. In both cases, the Company sold a portion of its track to expand freight and commuter rail service, while also alleviating highway congestion.

Balanced Approach to Cash Deployment

CSX remains highly committed to delivering value to shareholders through a balanced approach to deploying cash that includes investments in the business, dividend growth and share repurchases. In 2013, the Company invested $2.3 billion to further enhance the capacity, quality, safety and flexibility of its network. In addition, CSX continues to return value to its shareholders in the form of dividends and share repurchases. During 2013, the Company announced a 7 percent increase in the quarterly cash dividend to $0.15 per common share. The Company has increased its quarterly cash dividend 11 times over the last eight years which represents a 30 percent compounded annual growth rate. Also during 2013, CSX announced a new $1 billion share repurchase program expected to be completed in 2015 based on market and business conditions. CSX repurchased $353 million in shares during 2013 under this new program. Since 2006, CSX has repurchased 287 million shares for $8.3 billion, which represents about one-third of total shares outstanding. The Company also remains committed to an improving investment grade credit profile.

Summary

These strategic growth areas, operating initiatives, long-term investments and shareholder returns discussed above provide a foundation for volume growth, productivity improvement, enhanced customer service and continued advancements in the safety and reliability of operations. To continue these types of investments, the Company must be able to operate in an environment in which it can generate adequate returns and drive shareholder value. CSX will continue to advocate for a fair and balanced regulatory environment to ensure that the value of the Company's rail service would be reflected in any potential new legislation or policies.

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2013 HIGHLIGHTS

• Revenue of $12.0 billionincreased$263 million or 2%.

• Expenses of $8.6 billionincreased$254 million or 3%.

• Operating income of $3.5 billion remained flat.

• Operating ratio of 71.1%increased50 basis points from 70.6%.

• Earnings per share of $1.83 increased $0.04 or 2%.

	Fiscal Years
(in Thousands)	2013			2012 (a)			2011 (a)
Volume	6,539			6,409			6,476
(in Millions)
Revenue	$	12,026		$	11,763		$	11,795
Expense	8,553			8,299			8,325
Operating Income	$	3,473		$	3,464		$	3,470
Operating Ratio	71.1		%	70.6		%	70.6		%
Earnings per diluted share	$	1.83		$	1.79		$	1.70

(a) See the revision of prior period financial statements in Note 1. Nature of Operations and Significant Accounting Policies.

In 2013, total revenue increased2% year-over-year driven by volume growth and pricing gains across most markets. Volume increased2% year-over-year as growth in merchandise and intermodal more than offset lower coal volume.

Expenses increased3% when compared to prior year, primarily due to inflation, higher incentive compensation expense, increased depreciation as well as prior year real estate gains not repeated in the current year.

For additional information, refer to Results of Operations discussed on pages 27 to 34.

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Free Cash Flow (Non-GAAP Measure)

Free cash flow is considered a non-GAAP financial measure under SEC Regulation G, Disclosure of Non-GAAP Measures. Management believes that free cash flow is useful to investors as it is important in evaluating the Company’s financial performance. More specifically, free cash flow measures cash generated by the business after reinvestment. This measure represents cash available for both equity and bond investors to be used for dividends, share repurchases or principle reduction on outstanding debt. Free cash flow should be considered in addition to, rather than a substitute for, cash provided by operating activities.  Free cash flow is calculated by using net cash from operations and adjusting for property additions and certain other investing activities.  As described below, free cash flow before dividends increased$174 million year over year to $895 million. The primary reason for the increase in free cash flow from the 2012 is due to the prior year contribution to the Company's qualified pension plans which did not repeat in the current year.

The following table reconciles cash provided by operating activities (GAAP measure) to free cash flow (non-GAAP measure).   

	Fiscal Years
	2013			2012			2011
(Dollars in Millions)
Net cash provided by operating activities	$	3,267		$	2,946		$	3,491
Property additions (a)	(2,313		)	(2,341		)	(2,297		)
Proceeds from property dispositions	53			186			240
Other investing activities	(112		)	(70		)	(112		)
Free Cash Flow (before payment of dividends)	$	895		$	721		$	1,322

(a) Property additions include investments related to reimbursable public-private partnerships. These investments of $40 million, $166 million and $102 million in 2013, 2012 and 2011 respectively, are projects that are partially or wholly reimbursed to CSX through either government grants or other funding sources such as cash received from a property sale.  These reimbursements may not be fully received in a given year; therefore the timing of receipts may differ from the timing of the investment. 

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PART II

RESULTS OF OPERATIONS

2013 vs. 2012 Results of Operations

	Fiscal Years
	2013			2012 (a)			$ Change			% Change
(Dollars in Millions)
Revenue	$	12,026		$	11,763		$	263		2	%
Expense
Labor and Fringe	3,138			3,020			(118		)	(4	)
Materials, Supplies and Other	2,275			2,156			(119		)	(6	)
Fuel	1,656			1,672			16			1
Depreciation	1,104			1,059			(45		)	(4	)
Equipment and Other Rents	380			392			12			3
Total Expense	8,553			8,299			(254		)	(3	)
Operating Income	3,473			3,464			9			—
Interest Expense	(562		)	(566		)	4			1
Other Income - Net	11			73			(62		)	(85	)
Income Tax Expense	(1,058		)	(1,108		)	50			5
Net Earnings	$	1,864		$	1,863		$	1		—
Earnings Per Diluted Share:
Net Earnings	$	1.83		$	1.79		$	0.04		2	%
Operating Ratio	71.1		%	70.6		%				(50) bps

(a) See the revision of prior period financial statements in Note 1. Nature of Operations and Significant Accounting Policies

Volume and Revenue(Unaudited)
Volume (Thousands of units); Revenue (Dollars in Millions); Revenue Per Unit (Dollars)
	Volume				Revenue						Revenue Per Unit
	2013	2012 (a)	% Change		2013		2012 (a)		% Change		2013		2012 (a)		% Change
Agricultural
Agricultural Products	390	394	(1	)%	$	1,013	$	1,007	1	%	$	2,597	$	2,556	2	%
Phosphates and Fertilizers	327	321	2		527		512		3		1,612		1,595		1
Food and Consumer	96	100	(4	)	269		273		(1	)	2,802		2,730		3
Industrial
Chemicals	532	471	13		1,896		1,682		13		3,564		3,571		—
Automotive	432	425	2		1,217		1,154		5		2,817		2,715		4
Metals	262	263	—		644		635		1		2,458		2,414		2
Housing and Construction
Forest Products	298	286	4		775		722		7		2,601		2,524		3
Minerals (b)	275	270	2		432		409		6		1,571		1,515		4
Waste and Equipment (b)	150	138	9		264		262		1		1,760		1,899		(7	)
Total Merchandise	2,762	2,668	4		7,037		6,656		6		2,548		2,495		2
Coal	1,195	1,290	(7	)	2,895		3,190		(9	)	2,423		2,473		(2	)
Intermodal	2,582	2,451	5		1,697		1,594		6		657		650		1
Other (a)	—	—	—		397		323		23		—		—		—
Total (a)	6,539	6,409	2	%	$	12,026	$	11,763	2	%	$	1,839	$	1,835	—	%

(a) See the revision of prior period financial statements in Note 1. Nature of Operations and Significant Accounting Policies.

(b) Prior periods have been reclassified to conform to current presentation.

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2013 vs. 2012 Results of Operations

Revenue

Volume increased 2% year-over-year as growth in merchandise and intermodal more than offset lower coal volume. Total revenue increased by 2% year-over-year driven by this volume growth and pricing gains across most markets.

Merchandise

Agricultural

Agricultural Products - Volume declined due to a reduction in shipments of feed grain and ethanol. Feed grain shipments were impacted by low supplier inventories caused by last year’s drought and increased competition from imports. Ethanol shipments declined as a result of increased competition from imports, lower production and competitive losses.

Phosphates and Fertilizers - Volume growth was driven by the reopening of a customer mine that led to more short haul phosphates shipments that were previously sourced from an origin not located on CSX’s network.

Food and Consumer - Volume declined due to a reduction in shipments of refrigerated products and alcoholic beverages. The decline in refrigerated products volume was driven by lower potato shipments as a result of more normalized production levels compared to the above-average yields in the prior year, while the decline in alcoholic beverages was primarily driven by a consolidation within a customer’s distribution network that resulted in lower shipments for CSX.

Industrial

Chemicals - Volume growth was driven by an increase in energy-related shipments that included crude oil, liquefied petroleum gas ("LPG") and frac sand. The rise in crude oil shipments was due to increased supply of low-cost crude from shale drilling activity, resulting in new shipments to east coast refineries.

Automotive - Finished vehicle shipments increased as North American light vehicle production grew year-over-year. This increase was partially offset by competitive losses in both automotive parts and finished vehicles.

Metals - Volume was flat as a reduction in steel sheet shipments was offset by growth in aluminum products and steel plates. The reduction in shipments of steel sheet, which is used in automotive manufacturing, was driven by competitive losses, mill closures and source shifts.  Shipments of aluminum product, which is used in a variety of products like packaging and construction, increased due to modal conversions. Shipments of steel plate, which is used in a wide range of end markets including construction, structural and energy applications, increased in support of continued growth in energy-related markets.

Housing and Construction

Forest Products - Volume growth was led by an increase in building products due to the continued recovery of the residential housing market.

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Minerals - Volume growth was led by an increase in salt shipments due to modal conversions, new customer distribution terminals and inventory replenishment from more severe winter weather in early 2013 that resulted in more application of salt to roads.

Waste and Equipment- Volume growth was led by waste shipments which were driven by an increase in construction debris due to the continued recovery in construction activity and large scale remediation projects.

Coal

Export declines were driven by decreased shipments of U.S. thermal coal, as a result of global oversupply and lower coal prices. Shipments of domestic coal declined due to continued low natural gas prices and utility stockpiles above target levels.

Intermodal

Domestic volume growth was driven by continued success with highway-to-rail conversions, growth with existing customers, and service product enhancements. International volume increased due to strength with existing customers and the cycling of disruptions resulting from Hurricane Sandy last year.

Other

Other revenue increased primarily due to higher revenue from customers who did not meet minimum contractual volumes.

Expense

In 2013, total expenses increased$254 million, or 3%, compared to prior year. Descriptions of each expense category as well as significant year-over-year changes are described below.

Labor and Fringe expenses include employee wages and related payroll taxes, health and welfare costs, pension, other post-retirement benefits and incentive compensation. These expenses increased$118 million primarily due to the following items:

• Incentive compensation costs were $89 million higher reflecting higher expected award payouts.

• Inflation increased expenses $61 million.

• Partially offsetting these increases were labor and other costs which decreased $32 million primarily related to improvements in network efficiencies that resulted from the overall reduction in employees, fewer crew starts as well as lower training expenses.

Materials, Supplies and Otherexpenses consist primarily of contracted services to maintain infrastructure and equipment and for terminal services at automotive facilities as well as professional services. This category also includes costs related to materials, travel, casualty claims, environmental remediation, train accidents, property and sales tax, utilities and other items. Total materials, supplies and other expense increased$119 million primarily driven by the following:

• Inflation increased expenses $42 million.

• Risk-related costs increased $39 million primarily due to higher expenses related to derailment costs as well as prior year favorable casualty adjustments that did not repeat in 2013.

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• Volume, materials and services costs increased $19 million primarily due to increased expenses related to higher volume and resource levels.

• Gains recognized decreased $19 million year over year. Gains from last year related to the sale of operating rail corridors to the state of Florida and to the Commonwealth of Massachusetts were $104 million. Gains in the current year were $85 million for the sale of operating rail corridor to the state of Florida, a non-monetary exchange of easements and rail assets as well as a deferred gain recognized from a closure arrangement related to a prior conveyance of a formerly-owned company.

Fuel expense includes locomotive diesel fuel as well as non-locomotive fuel. This expense is driven by the market price and locomotive consumption of diesel fuel. Fuel expense decreased$16 million driven by the following:

• Improved network efficiency and fuel savings initiatives decreased expenses by $38 million.

• Average fuel price per gallon decreased $0.05 to $3.17 per gallon versus the prior year which reduced expenses by $26 million.

• Partially offsetting these decreases were volume-related costs of $31 million as well as other costs of $17 million which includes an adjustment to an interline fuel receivable.

Depreciation expense primarily relates to recognizing the costs of a capital asset, such as locomotives, railcars and track structure, over its useful life. This expense is impacted primarily by the capital expenditures made each year. Depreciation expense increased$45 million primarily due to a larger asset base related to higher capital spending.

Equipment and Otherincludes rent paid for freight cars owned by other railroads or private companies, net of rents received by CSXT for use of its equipment. This category of expenses also includes lease expenses for locomotives, railcars, containers and trailers, office and other rentals. These expenses decreased$12 million primarily due to improved asset utilization partially offset by increased rates and volume.

Interest expensedecreased$4 million to $562 million primarily due to lower average interest rates partially offset by higher average debt balances.

Other income - netdecreased$62 million to $11 million primarily related to the prior year gain recognized on the sale of a non-operating property that was not repeated in the current year.

Income tax expense decreased$50 million to $1.06 billion primarily due to the year-over-year decrease in earnings before income taxes as well as federal and state legislative changes.

Net earningsincreased$1 million to $1.86 billion, and earnings per diluted share increased$0.04 to $1.83 due to the factors mentioned above. Lower average shares outstanding also had a positive impact on earnings per diluted share.

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2012 vs. 2011 Results of Operations

	Fiscal Years
	2012 (a)			2011 (a)			$ Change			% Change
(Dollars in Millions)
Revenue	$	11,763		$	11,795		$	(32	)	—	%
Expense
Labor and Fringe	3,020			3,073			53			2
Materials, Supplies and Other	2,156			2,229			73			3
Fuel	1,672			1,668			(4		)	—
Depreciation	1,059			976			(83		)	(9	)
Equipment and Other Rents	392			379			(13		)	(3	)
Total Expense	8,299			8,325			26			—
Operating Income	3,464			3,470			(6		)	—
Interest Expense	(566		)	(552		)	(14		)	(3	)
Other Income - Net	73			22			51			232
Income Tax Expense	(1,108		)	(1,086		)	(22		)	(2	)
Net Earnings	$	1,863		$	1,854		$	9		1
Earnings Per Diluted Share:
Net Earnings	$	1.79		$	1.70		$	0.09		5	%
Operating Ratio	70.6		%	70.6		%				0 bps

(a) See the revision of prior period financial statements in Note 1. Nature of Operations and Significant Accounting Policies.

Volume and Revenue (Unaudited)
Volume (Thousands of units); Revenue (Dollars in Millions); Revenue Per Unit (Dollars)
	Volume				Revenue						Revenue Per Unit
	2012 (a)	2011 (a)	% Change		2012 (a)		2011 (a)		% Change		2012 (a)		2011 (a)		% Change
Agricultural
Agricultural Products	394	424	(7	)%	$	1,007	$	1,048	(4	)%	$	2,556	$	2,472	3	%
Phosphates and Fertilizers	321	321	—		512		490		5		1,595		1,526		5
Food and Consumer	100	101	(1	)	273		263		4		2,730		2,604		5
Industrial
Chemicals	471	462	2		1,682		1,596		5		3,571		3,455		3
Automotive	425	361	18		1,154		936		23		2,715		2,593		5
Metals	263	265	(1	)	635		613		4		2,414		2,313		4
Housing and Construction
Minerals (b)	270	295	(9	)	409		423		(3	)	1,515		1,434		6
Waste and Equipment (b)	138	144	(4	)	262		249		5		1,899		1,729		10
Forest Products	286	281	2		722		684		6		2,524		2,434		4
Total Merchandise	2,668	2,654	1		6,656		6,302		6		2,495		2,375		5
Coal	1,290	1,533	(16	)	3,190		3,709		(14	)	2,473		2,419		2
Intermodal	2,451	2,289	7		1,594		1,434		11		650		626		4
Other (a)	—	—	—		323		350		(8	)	—		—		—
Total (a)	6,409	6,476	(1	)%	$	11,763	$	11,795	—	%	$	1,835	$	1,821	1	%

(a) See the revision of prior period financial statements in Note 1. Nature of Operations and Significant Accounting Policies.

(b) Prior periods have been reclassified to conform to current presentation.

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2012 vs. 2011 Results of Operations

Revenue

CSX full year results reflect a 1% year-over-year volume decline as lower coal shipments were partially offset by growth in intermodal and automotive volume. Pricing gains and higher fuel recovery drove increases in revenue per unit in all markets.

Merchandise

Agricultural

Agricultural Products - Volume decreased due to reduced shipments of corn and ethanol. Corn shipments for animal feed declined as drought conditions in the Midwest impacted harvest levels and drove corn prices higher. Further contributing to this decline, customers in the Southeast took advantage of lower cost imported grains and a strong local crop, both of which are transported by truck. Ethanol shipments declined as a result of higher corn prices and reduced gasoline demand.

Phosphates and Fertilizers - Volume was flat year-over-year. Fertilizer shipments were lower in the first half of the year as the expectation of moderating prices resulted in delayed purchases by farmers. This decline in the first half was offset by growth in fertilizer in the second half resulting from low river levels that shifted business that traditionally moves on barge to rail. Additionally, producers advanced shipments of fertilizer in the fourth quarter in anticipation of an expected increased application by farmers in 2013.

Food and Consumer - Volume declined year-over-year. Appliance shipments were lower due to intermodal conversions, lower sales incentives by manufacturers and a moderating economy. The decline in appliances was partially offset by growth in refrigerated products due to highway-to-rail conversions.

Industrial

Chemicals - Volume growth was driven by an increase in energy-related markets (that include frac sand, LPG and crude oil) due to the increase in shale drilling activity. Additionally, plastics shipments grew to support growth predominately in automotive and packaging.

Automotive - Volume grew as North American light vehicle production increased 17% to meet pent up demand as the average vehicle age in the U.S. reached record highs.

Metals - Volume was slightly lower primarily due to the decline in scrap shipments as a result of lower steel mill utilization rates and lower scrap exports driven by moderating global demand.

Housing and Construction

Minerals - Volume declined due to reduced shipments of aggregates (which include crushed stone, sand and gravel) resulting from the completion of several construction projects versus the prior year.  Additionally, shipments of salt declined in the early part of 2012 as inventories remained high due to reduced road application during the previous mild winter.

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Waste and Equipment - Volume declines were led by reduced shipments of military and machinery equipment which were negatively impacted by the expiration of the federal tax credit on the production of wind energy machinery.  Additionally, waste shipments decreased as several customer remediation projects were completed.

Forest Products - Volume increased in building products due to recovering demand for housing and construction, which was partially offset by a decline in the paper markets affected by electronic media substitution.

Coal

Shipments of utility coal declined primarily driven by low natural gas prices, which drove displacement of coal at utilities served by CSX. In addition, utility stockpiles remained well above target levels and overall electric generation in the eastern U.S. declined. Utility coal declines were partially offset by higher export shipments driven by increased shipments of U.S. thermal coal. In 2012, CSX shipped 47.8 million tons of export coal.

Intermodal

Intermodal volume increased due to growth in both domestic and international markets. Domestic shipment growth resulted from highway-to-rail conversions and increased demand from both new and existing customers. International growth was driven by a new customer and expanded service offerings primarily enabled by the Northwest Ohio terminal.

Expenses

In 2012, total expenses decreased $26 million compared to prior year.  Descriptions of each expense category as well as significant year-over-year changes are described below.

Labor and Fringe expenses include employee wages and related payroll taxes, health and welfare costs, pension, other post-retirement benefits and incentive compensation. These expenses decreased $53 million due to the following:

• Incentive compensation expense decreased $55 million reflecting lower expected award payouts.

• Crew labor costs decreased $42 million as a result of the decline in volume as well as efficiencies gained from management's action to reduce resources.

• These decreases were partially offset by increased costs of $44 million primarily driven by wage inflation and increased pension and other post-employment benefit expense.

Materials, Supplies and Otherexpenses consist primarily of contracted services to maintain infrastructure and equipment and for terminal services at automotive facilities as well as professional services. This category also includes costs related to materials, travel, casualty claims, environmental remediation, train accidents, property and sales tax, utilities and other items. Total materials, supplies and other expense decreased by $73 million in 2012. The decrease was primarily driven by the following:

• Gains recognized increased $102 million year-over-year, primarily related to the additional recognition of the deferred gain from the prior year sale of an operating corridor to the state of Florida of $80 million.

• Continued improvement in safety trends lowered casualty expenses by $19 million.

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• Various other costs also decreased $17 million.

• As a result of efficiency initiatives and the decline in volume, expenses decreased $12 million primarily related to lower material and repair costs due to the reduction of active locomotives.

• Partially offsetting the above decreases in expenses were inflation of $47 million and a few costly derailments of $30 million, although the number of train accidents continued to decline.

Fuel expense includes locomotive diesel fuel as well as non-locomotive fuel. This expense is driven by the market price and locomotive consumption of diesel fuel. Overall, fuel expense increased $4 million due to a 4% increase in average price per gallon for locomotive fuel, partially offset by decreased volume and improved network efficiency.

• Average fuel price per gallon increased $0.12 to $3.18 in 2012 versus 2011, which drove fuel expense $60 million higher versus the prior year.

• Partially offsetting this increase is $56 million of savings related to decreased volume, improved network efficiency, fuel saving initiatives and the decline in non-locomotive fuel.

Depreciation expense primarily relates to recognizing the costs of a capital asset, such as locomotives, railcars and track structure, over its useful life. This expense is impacted primarily by the capital expenditures made each year. Depreciation expense increased $83 million due to the following items:

• A larger asset base related to higher capital spending drove expenses $66 million higher versus 2011.

• A prior year favorable adjustment to asset retirements and other of $17 million was not repeated in 2012.

Equipment and Otherincludes rent paid for freight cars owned by other railroads or private companies, net of rents received by CSXT for use of its equipment. This category of expenses also includes lease expenses for locomotives, railcars, containers and trailers, office and other rentals. These expenses increased $13 million primarily due to the following:

• Higher automotive volume-related costs increased expenses by $24 million.

• Various other costs increased $33 million.

• These increases were partially offset by savings of $44 million associated with improved asset utilization.

Interest expense increased $14 million to $566 million primarily due to higher average debt balances partially offset by lower interest rates. The primary use of proceeds from the 2012 debt issuances was for the repayment of outstanding indebtedness due in both 2012 and early 2013 as well as a contribution to the Company's qualified pension plans.

Other income - net increased $51 million to $73 million primarily related to a gain on the sale of a non-operating real estate.

Income tax expense increased $22 million to $1.1 billion primarily due to higher earnings during 2012 and the cycling of prior year state income tax related adjustments.

Net earnings increased $9 million to $1.9 billion and earnings per diluted share increased $0.12 to $1.79 due to the factors mentioned above. Lower average shares outstanding also had a positive impact on earnings per diluted share.

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Operating Statistics (Estimated)

	Fiscal Years
	2013		2012		Improvement/(Decline)
Safety and Service Measurements
FRA Personal Injury Frequency Index	0.86		0.70		(23	)%
FRA Train Accident Rate	1.83		2.08		12	%
On-Time Train Originations	89	%	89	%	—	%
On-Time Destination Arrivals	81	%	80	%	1	%
Dwell	22.2		23.7		6	%
Cars-On-Line	182,266		189,994		4	%
Train Velocity	23.2		22.7		2	%
					Increase/
					(Decrease)
Resources
Route Miles	20,814		20,828		—	%
Locomotives (owned and long-term leased)	4,259		4,178		2	%
Freight Cars (owned and long-term leased)	68,008		69,126		(2	)%
Containers (owned and long-term leased)	17,569		17,927		(2	)%

Key Performance Measures Definitions

FRA Personal Injury Frequency Index - Number of FRA-reportable injuries per 200,000 man-hours.

FRA Train Accident Rate - Number of FRA-reportable train accidents per million train-miles.

On-Time Train Originations - Percent of scheduled road trains that depart the origin yard on-time or ahead of schedule.

On-Time Destination Arrivals - Percent of scheduled road trains that arrive at the destination yard on-time to two hours late (30 minutes for intermodal trains).

Dwell - Average amount of time in hours between car arrival at and departure from the yard. It does not include cars moving through the yard on the same train.

Cars-On-Line - An average count of all cars on the network (does not include locomotives, cabooses, trailers, containers or maintenance equipment).

Train Velocity - Average train speed between terminals in miles per hour (does not include locals, yard jobs, work trains or passenger trains).

The Company measures and reports safety and service performance.  The Company strives for continuous improvement in these measures through training, innovation and investment. For example, the Company's safety and train accident prevention programs rely on the latest tools, programs and employee participation that strengthen the safety culture in a supportive environment that allows each employee to be successful at CSX. Continued capital investment in the Company's assets, including track, bridges, signals, equipment and detection technology also supports safety performance. CSX safety programs are designed to prevent incidents that can impact employees, customers and the communities we serve.

CSX has continuously pursued safety improvements in all aspects of its operations and has enhanced efforts to educate communities on rail-related hazards.  For example, CSX’s “Play It Safe” campaign uses electronic and print media to stress the importance of staying safe around trains and tracks.  The Company uses sponsorship of NASCAR and NCAA basketball to capture the attention of targeted demographic groups. In addition, the Company routinely collaborates with the FRA and industry organizations as well as federal, state and local governments on the development and implementation of safety programs and initiatives. 

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    At CSX, operational success is built on employee commitment to maintaining a constant focus on safety. During 2013, the FRA reportable personal injury frequency index increased 23 percent year over year to 0.86 and underscores the need for continued progress. However, CSX continues to remain a leader in a very safe industry. The reported FRA train accident frequency rate improved 12 percent year over year to 1.83 reflecting continued momentum in accident reduction.

Network reliability and service metrics continued to show year over year improvements during 2013. While on-time originations remained flat at 89 percent, on-time arrivals improved 1 percent to 81 percent, average train velocity increased 2 percent to 23.2 miles per hour and dwell improved 6 percent to 22.2 hours.

LIQUIDITY AND CAPITAL RESOURCES

Liquidity is a company’s ability to generate adequate amounts of cash to meet both current and future needs for obligations as they mature and to provide for planned capital expenditures, including those to address regulatory and legislative requirements.  To have a complete picture of a company’s liquidity, its balance sheet, sources and uses of cash flow and external factors should be reviewed.

Material Changes in the Consolidated Balance Sheets and Significant Cash Flows

Consolidated Balance Sheets

CSX's balance sheet reflects its strong capital base and the impact of CSX's balanced approach in deploying capital for the benefit of its shareholders, which includes investments in infrastructure, dividend improvement and share repurchases.

Total assets increased$1.1 billion from prior year primarily due to the increase in net properties of $1.2 billion resulting from capital investments. This increase was partially offset by the decline in cash and short-term investments of $292 million.

Total liabilities and shareholders' equity combined increased$1.1 billion. This increase was primarily due to net earnings of $1,864 million and the increase in deferred income taxes of $566 million primarily related to accelerated tax depreciation as well as the tax impact of the unrecognized gain related to pension and other post-employment benefits plans which was recorded in 2013. Partially offsetting these increases were dividends paid of $600 million, share repurchases of $353 million and a net reduction in total debt of $277 million.

Sources of Cash

The Company has multiple sources of cash.  First, the Company generates cash from operations.  In 2013, the Company generated $3.3 billion of cash from operating activities which increased$321 million from prior year.  This increase was primarily driven by a $275 million contribution to the Company's qualified pension plans in the prior year that did not repeat. In 2012, the Company generated $2.9 billion of cash from operating activities which decreased $545 million from the prior year. This decrease was primarily driven by a pension plan contribution as mentioned above, higher payments for income taxes as well as payments related to the ratification of labor agreements in 2012.

Second, CSX has access to numerous financing sources including a $1 billion five-year unsecured revolving credit facility that expires in September 2016.  As of the date of this filing, the Company has no outstanding balances under this facility.  See Note 9, Debt and Credit Agreements for more information.

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CSX filed a shelf registration statement with the SEC on February 15, 2013.   This shelf registration statement is unlimited as to amount and may be used, subject to market conditions and CSX Board authorization, to issue debt or equity securities at CSX’s discretion. While CSX seeks to give itself flexibility with respect to cash requirements, there can be no assurance that market conditions would permit CSX to sell such securities on acceptable terms at any given time, or at all.

Uses of Cash

CSX continued to invest in its business to create long-term value for shareholders.  In 2013 and 2012, net cash used in investing activities was driven by $2.3 billion of property additions for both years.

 The Company is committed to maintaining and improving its existing infrastructure and to positioning itself for long-term growth through expanding network and terminal capacity. Funds used for property additions are further described below.

	Fiscal Years
Capital Expenditures (Dollars in Millions)	2013		2012		2011
Track	$	793	$	792	$	785
Bridges, Signals and Other	415		429		421
Total Infrastructure	1,208		1,221		1,206
Freight Cars	146		288		373
Capacity and Commercial Facilities	346		218		264
Regulatory (including PTC)	318		270		210
Locomotives	255		178		142
Public-Private Partnerships - net (a)	40		166		102
Total Capital Expenditures (a)	$	2,313	$	2,341	$	2,297

(a) Total capital expenditures shown above include investments related to reimbursable public-private partnerships. These investments are for projects that are partially or wholly reimbursed to CSX through either government grants or other funding sources such as cash received from a property sale.  These reimbursements may not be fully received in a given year; therefore the timing of receipts may differ from the timing of the investment. 

Planned capital investments for 2014 are expected to be $2.3 billion, including expected spending of approximately $300 million for PTC. This $2.3 billion excludes investments related to partially or wholly reimbursable public-private partnerships where reimbursements may not be fully received in a given year. Over half of the 2014 investment will be used to sustain the core infrastructure. The remaining amounts will be allocated to locomotives, freight cars, and high return projects that support long-term profitable growth and productivity initiatives that improve the returns of the business, such as intermodal terminal capacity projects. CSX intends to fund capital investments through cash generated from operations.  

Over the long term, the Company expects to incur significant capital costs in connection with the implementation of PTC. CSX estimates that the total multi-year cost of PTC implementation will be at least $1.7 billion. This estimate includes costs for installing the new system along tracks, upgrading locomotives, adding communication equipment and developing new technologies. Total PTC spending through 2013 was $875 million.

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In addition to capital investments, the Company uses cash for scheduled payments of debt and leases, share repurchases and to pay dividends to shareholders.  In 2013, net cash used in financing activities was $1,232 million, which was an increase in spending of $564 million. This increase was driven by higher debt repayments and a lower amount of debt issued, partially offset by lower share repurchases. In 2012, net cash used in financing activities was $668 million, which was a decrease in spending of $745 million. Share repurchases were lower by $830 million and partially offsetting this were higher dividend payments of $78 million as a result of an increase in the quarterly dividend from $0.12 to $0.14 per share in second quarter 2012. 

CSX is continually evaluating market and regulatory conditions that could affect the Company’s ability to generate sufficient returns on capital investments.  CSX may revise its future estimates for capital spending as a result of changes in business conditions, tax legislation or the enactment of new laws or regulations which could have a material adverse effect on the Company’s operations and financial performance in the future (see Risk Factors under Item 1A of this Form 10-K).

Liquidity and Working Capital

Currently, CSX is well positioned from a liquidity standpoint.  The Company ended the year with $1.1 billion of cash, cash equivalents and short-term investments.  CSX has a $1 billion unsecured revolving credit facility backed by a diverse syndicate of banks. This facility expires in September 2016 and as of the date of this filing, the Company has no outstanding balances under this facility. Additionally in 2013, CSX issued a total of $500 million of new long-term debt. CSX uses current cash balances for general corporate purposes, which may include reduction or refinancing of outstanding indebtedness, capital expenditures, working capital requirements, contributions to the Company's qualified pension plan, redemptions and repurchases of CSX common stock and dividends to shareholders. See Note 9, Debt and Credit Agreements. 

The Company's $250 million receivables securitization facility has a 364-day term and expires in December 2014. The purpose of this facility is to provide an alternative to commercial paper and a low cost source of short-term liquidity. The Company anticipates either renewing the facility or replacing it with another liquidity-based solution. Under the terms of this facility, CSXT transfers eligible third-party receivables to CSX Trade Receivables, a bankruptcy-remote special purpose subsidiary. A separate subsidiary of CSX services the receivables. Upon transfer, the receivables become assets of CSX Trade Receivables and are not available to the creditors of CSX or any of its other subsidiaries. In the event CSX Trade Receivables draws under this facility, the Company will record an equivalent amount of debt on its consolidated financial statements. As of the date of this filing, the Company has no outstanding balances under this facility.

Working capital can also be considered a measure of a company’s ability to meet its short-term needs.  CSX had a working capital surplus of $178 million and $308 million at December 2013 and 2012, respectively.  This decline since the prior year is primarily due to cash used for capital investments, dividends paid, share repurchases and long-term debt repaid which more than offset cash from operations. Also, see sources and uses of cash description above.

The Company’s working capital balance varies due to factors such as the timing of scheduled debt payments and changes in cash and cash equivalent balances as discussed above.  Although the Company currently has a surplus, a working capital deficit is not unusual for CSX or other companies in the industry and does not indicate a lack of liquidity. The Company continues to maintain adequate current assets to satisfy current liabilities and maturing obligations when they come due.  Furthermore, CSX has sufficient financial capacity, including its revolving credit facility, trade receivable facility and shelf registration statement to manage its day-to-day cash requirements and any anticipated obligations.  The Company from time to time accesses the credit markets for additional liquidity.

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Credit Ratings

Credit ratings reflect an independent agency’s judgment on the likelihood that a borrower will repay a debt obligation at maturity.  The ratings reflect many considerations, such as the nature of the borrower’s industry and its competitive position, the size of the company, its liquidity and access to capital and the sensitivity of a company’s cash flows to changes in the economy.  The two largest rating agencies, Standard & Poor’s Ratings Services (“S&P”) and Moody’s Investors Service (“Moody’s”), use alphanumeric codes to designate their ratings.  The highest quality rating for long-term credit obligations is AAA and Aaa for S&P and Moody’s, respectively.  A credit rating is not a recommendation to buy, sell or hold securities and may be subject to revision or withdrawal at any time by the assigning rating agency.

The cost and availability of unsecured financing are materially affected by CSX's credit ratings. CSX's credit ratings have improved during 2013. Currently, CSX is rated BBB+ with a stable outlook by S&P and Baa2 with a stable outlook by Moody's, compared to a rating of BBB with a positive outlook by S&P and Baa2 with a stable outlook by Moody's at December 2012.  Ratings of BBB- and Baa3 or better by S&P and Moody’s, respectively, reflect ratings on debt obligations that fall within a band of credit quality considered to be investment grade. If CSX's credit ratings were to decline to below investment grade levels, the Company could experience significant increases in its interest cost for new debt.  In addition, a decline in CSX’s credit ratings to below investment grade levels could adversely affect the market’s demand, and thus the Company’s ability to readily issue new debt.

SCHEDULE OF CONTRACTUAL OBLIGATIONS AND COMMERCIAL COMMITMENTS

The following tables set forth maturities of the Company's contractual obligations and other significant commitments:

Type of Obligation	2014		2015		2016		2017		2018		Thereafter		Total
(Dollars in Millions) (Unaudited)
Contractual Obligations
Total Debt (See Note 9)	$	533	$	629	$	22	$	631	$	619	$	7,121	$	9,555
Interest on Debt	547		498		478		456		415		5,552		7,946
Purchase Obligations (See Note 7)	613		319		260		238		226		1,367		3,023
Other Post-Employment Benefits (See Note 8)(a)	52		50		49		47		46		204		448
Operating Leases - Net (See Note 7) (b)	51		46		37		28		19		118		299
Agreements with Conrail (b)	25		25		25		25		25		144		269
Total Contractual Obligations	$	1,821	$	1,567	$	871	$	1,425	$	1,350	$	14,506	$	21,540
Other Commitments (c)	$	136	2		2		2		2		8		$	152

(a) Other post-employment benefits include estimated other post-retirement medical and life insurance payments and payments under non-qualified pension plans which are unfunded. No amounts are included for funded pension obligations as no contributions are currently required.

(b) Agreements with Conrail represent minimum future lease payments of $269 million under the shared asset area agreements (see Note 12, Related Party Transactions). These amounts plus total operating leases-net of $299 million above equals total net lease commitments of $568 million disclosed in Note 7, Commitments and Contingencies.

(c) Other commitments of $152 million consisted of surety bonds, letters of credit, uncertain tax positions and public private partnerships.  Surety bonds of $71 million and letters of credit of $39 million arise from assurances issued by a third-party that CSX will fulfill certain obligations and are typically a contract, state, federal or court requirement. Uncertain tax positions of $23 million which include interest and penalties are all included in year 2014. The year of settlement cannot be reasonably estimated, however, the Company believes at least $3 million of these unrecognized tax benefits will be resolved in the next 12 months. Contractual commitments related to public-private partnerships are $19 million.

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OFF-BALANCE SHEET ARRANGEMENTS

For detailed information about the Company’s guarantees, operating leases and purchase obligations, see Note 7, Commitments and Contingencies.

There are no off-balance sheet arrangements that are reasonably likely to have a material effect on the Company’s financial condition, results of operations or liquidity.

CRITICAL ACCOUNTING ESTIMATES

The preparation of financial statements in conformity with accounting principles generally accepted in the United States requires that management make estimates in reporting the amounts of certain assets and liabilities, the disclosure of contingent assets and liabilities at the date of the financial statements and certain revenues and expenses during the reporting period.  Actual results may differ from those estimates. These estimates and assumptions are discussed with the Audit Committee of the Board of Directors on a regular basis.  Consistent with the prior year, significant estimates using management judgment are made for the following areas:

• casualty, environmental and legal reserves;

• pension and post-retirement medical plan accounting;

• depreciation policies for assets under the group-life method; and

• income taxes.

Casualty, Environmental and Legal Reserves

Casualty

Casualty reserves of $280 million in 2013 represent accruals for personal injury, occupational injury and asbestos claims. The Company's self-insured retention amount for these claims is $50 million per occurrence.  Currently, no individual claim is expected to exceed the Company's self-insured retention amount.  In accordance with the Contingencies Topic in the Financial Accounting Standards Board's ("FASB") Accounting Standards Codification ("ASC"), to the extent the value of an individual claim exceeds the self-insured retention amount, the Company would present the liability on a gross basis with a corresponding receivable for insurance recoveries.  These reserves fluctuate based upon the timing of payments as well as changes in independent third-party estimates, which are reviewed by management.  Actual results may vary from estimates due to the number, type and severity of the injury, costs of medical treatments and uncertainties in litigation. Most of the Company's casualty claims relate to CSXT unless otherwise noted below.  Defense and processing costs, which historically have been insignificant and are anticipated to be insignificant in the future, are not included in the recorded liabilities. During 2013, 2012 and 2011, there were no significant changes in estimate recorded to adjust casualty reserves.

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Critical Accounting Estimates, continued

Personal Injury

Personal injury reserves represent liabilities for employee work-related and third-party injuries.  Work-related injuries for CSXT employees are primarily subject to the Federal Employers’ Liability Act (“FELA”).  In addition to FELA liabilities, employees of other CSX subsidiaries are covered by various state workers’ compensation laws, the Federal Longshore and Harbor Workers’ Compensation Program or the Maritime Jones Act.

CSXT retains an independent actuarial firm to assist management in assessing the value of personal injury claims.  An analysis is performed by the independent actuarial firm quarterly and is reviewed by management. The methodology used by the actuary includes a development factor to reflect growth or reduction in the value of these personal injury claims. It is based largely on CSXT's historical claims and settlement experience.

During 2013 and 2012, there were no significant changes in estimates in personal injury reserves. Adjustments to the reserves are included in materials, supplies and other in the consolidated income statements.

Occupational & Asbestos

Occupational claims arise from allegations of exposures to certain materials in the workplace, such as solvents, soaps, chemicals (collectively referred to as “irritants”) and diesel fuels (like exhaust fumes) or allegations of chronic physical injuries resulting from work conditions, such as repetitive stress injuries, carpal tunnel syndrome and hearing loss.

The Company is also party to a number of asbestos claims by employees alleging exposure to asbestos in the workplace.  The heaviest possible exposure for employees resulted from work conducted in and around steam locomotive engines that were largely phased out beginning around the 1950s. Other types of exposures, however, including exposure from locomotive component parts and building materials, continued until these exposures were substantially eliminated by 1985.  Additionally, the Company has retained liability for asbestos claims filed against its previously owned international container shipping business.  Diseases associated with asbestos typically have long latency periods (amount of time between exposure to asbestos and the onset of the disease) which can range from 10 to 40 years after exposure.

Occupational and asbestos claims are analyzed by a third-party actuary or specialist (the "third-party specialist"), respectively, in order to determine the number of unasserted or incurred but not reported (“IBNR”) claims. Occupational claims analyses are performed by the third-party specialist quarterly and are reviewed by management. Since exposure to asbestos has been substantially eliminated, management reviews asserted asbestos claims quarterly and the review by the third-party specialist is completed annually. With the exception of carpal tunnel, management has determined that seven years is the most probable time period in which unasserted claim filings and claim values can be estimated.  Carpal tunnel claims use a three-year period to estimate the reserve due to the shorter latency period for these types of injuries.

The third-party specialists analyze CSXT’s historical claim filings, settlement amounts, and dismissal rates to determine future anticipated claim filing rates and average settlement values for occupational and asbestos claims reserves.  The potentially exposed population is estimated by using CSX's employment records and industry data.  From this analysis, the third-party specialists provide an estimate of the IBNR claims liability.

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Critical Accounting Estimates, continued

The estimated future filing rates and estimated average claim values are the most sensitive assumptions for these reserves.  A 1% increase or decrease in either the forecasted number of occupational and asbestos IBNR claims or the average claim values would result in approximately a $1 million increase or decrease in the liability recorded for unasserted occupational and asbestos claims.

During 2013 and 2012, there were no significant changes in estimates recorded to adjust occupational or asbestos reserves. Adjustments in reserves are included in materials, supplies and other in the consolidated income statements.

Environmental

Environmental reserves were $100 million for 2013. The Company is a party to various proceedings related to environmental issues, including administrative and judicial proceedings involving private parties and regulatory agencies. The Company has been identified as a potentially responsible party at approximately 244 environmentally impaired sites.   Many of these are, or may be, subject to remedial action under the federal Comprehensive Environmental Response, Compensation and Liability Act of 1980, or CERCLA, also known as the Superfund Law, or similar state statutes.  Most of these proceedings arose from environmental conditions on properties used for ongoing or discontinued railroad operations.  A number of these proceedings, however, are based on allegations that the Company, or its predecessors, sent hazardous substances to facilities owned or operated by others for treatment, recycling or disposal.  In addition, some of the Company’s land holdings were leased to others for commercial or industrial uses that may have resulted in releases of hazardous substances or other regulated materials onto the property and could give rise to proceedings against the Company.

In any such proceedings, the Company is subject to environmental clean-up and enforcement actions under the Superfund Law, as well as similar state laws that may impose joint and several liability for clean-up and enforcement costs on current and former owners and operators of a site without regard to fault or the legality of the original conduct.  These costs could be substantial.

In accordance with the Asset Retirement and Environmental Obligations Topic in the ASC, the Company reviews its role with respect to each site identified at least quarterly, giving consideration to a number of factors such as:

• type of clean-up required;

• nature of the Company’s alleged connection to the location (e.g., generator of waste sent to the site or owner or operator of the site);

• extent of the Company’s alleged connection (e.g., volume of waste sent to the location and other relevant factors); and

• number, connection and financial viability of other named and unnamed potentially responsible parties at the location.

 These recorded liabilities for estimated future environmental costs are undiscounted and include future costs for remediation and restoration of sites as well as any significant ongoing monitoring costs, but exclude any anticipated insurance recoveries.  Based on the review process, the Company has recorded amounts to cover contingent anticipated future environmental remediation costs with respect to each site to the extent such costs are estimable and probable.  Payments related to these liabilities are expected to be made over the next several years.  Environmental remediation costs are included in materials, supplies and other on the consolidated income statements.

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Critical Accounting Estimates, continued

Currently, the Company does not possess sufficient information to reasonably estimate the amounts of additional liabilities, if any, on some sites until completion of future environmental studies.  In addition, conditions that are currently unknown could, at any given location, result in additional exposure, the amount and materiality of which cannot presently be reasonably estimated.  Based upon information currently available, however, the Company believes its environmental reserves accurately reflect the cost of remedial actions currently required.

Legal

In accordance with the Contingencies Topic in the ASC, an accrual for a loss contingency is established if information available prior to issuance of the financial statements indicates that it is probable that an asset has been impaired or a liability has been incurred at the date of the financial statements, and the amount of loss can be reasonably estimated. If no accrual is made for a loss contingency because one or both of these conditions are not met, or if an exposure to loss exists in excess of the amount accrued, disclosure of the contingency is made when there is at least a reasonable possibility that a loss or an additional loss may have been incurred.

The Company evaluates all exposures relating to legal liabilities at least quarterly and adjusts reserves when appropriate under the guidance noted above. The amount of a particular reserve may be influenced by factors that include official rulings, newly discovered or developed evidence, or changes in laws, regulations and evidentiary standards. See Item 3. Legal Proceedings for further discussion of these items.

Pension and Post-retirement Medical Plan Accounting

The Company sponsors defined benefit pension plans principally for salaried, management personnel.  The plans provide eligible employees with retirement benefits based predominantly on years of service and compensation rates near retirement.  For employees hired in 2003 or thereafter, benefits are determined based on a cash balance formula, which provides benefits by utilizing interest and pay credits based upon age, service and compensation. As of December 2013, the projected benefit obligation for the Company’s pension plans and other post-employment benefit plans were $2.7 billion and $350 million, respectively. During 2012, the Company made a contribution of $275 million to its qualified pension plans, of which $25 million was the required minimum contribution. At this time, the Company anticipates that no further contributions to its qualified pension plans will be required in 2014.

In addition to these plans, the Company sponsors a post-retirement medical plan and a life insurance plan that provide benefits to full-time, salaried, management employees, hired prior to January 1, 2003, upon their retirement if certain eligibility requirements are met.  Prior to 2011, the post-retirement medical plan was partially funded by all participating retirees, with retiree contributions adjusted annually.  Beginning in 2011, Medicare-eligible retirees are covered by a health reimbursement arrangement, which is an employer-funded account that can be used for reimbursement of eligible medical expenses. Non-Medicare eligible retirees are covered by a self-insured program partially funded by participating retirees.  The life insurance plan is non-contributory.

For information related to the funded status of the Company's pension and other post-retirement benefit plans, see Note 8, Employee Benefit Plans.

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Critical Accounting Estimates, continued

The accounting for these plans is subject to the guidance provided in the Compensation-Retirement Benefits Topic in the ASC. This rule requires that management make certain assumptions relating to the following:

• discount rates used to measure future obligations and interest expense;

• long-term rate of return on plan assets;

• salary scale inflation rates; and

• other assumptions.

The Company engages independent, external actuaries to compute the amounts of liabilities and expenses relating to these plans subject to the assumptions that the Company selects.  The Company reviews the discount rates, long-term rate of return on plan assets, salary scale inflation rates and other assumptions on an annual basis and makes modifications to the assumptions based on current rates and trends as appropriate.

Discount Rates

Discount rates affect the amount of liability recorded and the interest expense component of pension and post-retirement expense.  Discount rates reflect the rates at which pension and other post-retirement benefits could be effectively settled, or in other words, how much it would cost the Company to buy enough high quality bonds to generate cash flow equal to the Company's expected future benefit payments.  The Company determines the discount rate based on the market yield as of year end for high quality corporate bonds whose maturities match the plans' expected benefit payments.

The discount rates used by the Company to value its 2013 pension and post-retirement obligations are 4.75% and 4.25%, respectively.   For 2012, the discount rate used by the Company to value its pension and post-retirement obligations was 3.75% and 3.20%, respectively.  Discount rates may differ for pension and post-retirement benefits due to varying duration of the liabilities for projected payments for each plan.  As of December 2013, the estimated duration of pensions and post-retirement benefits is approximately 12 years and 8 years, respectively.

Each year, these discount rates are reevaluated and adjusted using the current market interest rates for high quality corporate bonds to reflect the best estimate of the current effective settlement rates.  In general, if interest rates decline or rise, the assumed discount rates will change.

Long-term Rate of Return on Plan Assets

The expected long-term average rate of return on plan assets reflects the average rate of earnings expected on the funds invested, or to be invested, to provide for benefits included in the projected benefit obligation. In estimating that rate, the Company gives appropriate consideration to the returns being earned by the plan assets in the funds and the rates of return expected to be available for reinvestment as well as the current and projected asset mix of the funds.  Management balances market expectations obtained from various investment managers and economists with both market and actual plan historical returns to develop a reasonable estimate of the expected long-term rate of return on assets.  As this assumption is long-term, it is adjusted less frequently than other assumptions used in pension accounting.  The long-term rate of return on plan assets used by the Company to value its pension obligation was 7.50% and 7.75% in 2013 and 2012, respectively.

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Critical Accounting Estimates, continued

Salary Scale Inflation Rates

Salary scale inflation rates are based on current trends and historical data accumulated by the Company.  The Company reviews recent wage increases and management incentive compensation payments over the past five years in its assessment of salary scale inflation rates.  The Company used a salary scale rate of 3.75% to value its 2013 and 2012 pension obligations.

Other Assumptions

The calculations made by the actuaries also include assumptions relating to health care cost trend rates, mortality rates, turnover and retirement age.  These assumptions are based upon historical data, recent plan experience and industry trends and are selected by management.

2014 Estimated Pension and Post-retirement Expense

Net pension and post-retirement benefits expense for 2014 is expected to be approximately $58 million and $21 million, respectively, compared to $95 million and $29 million, respectively, in 2013.  The decrease in pension expense is primarily related to an increase in the discount rate and favorable asset experience.

The following sensitivity analysis illustrates the effect of changes in certain assumptions like discount rates, salaries and health care costs on the 2013 estimated pension and post-retirement expense:

(Dollars in Millions)	Pension		OPEB
Discount Rate 1% change	$	17	$	2
Long-term Rate of Return 1% change	$	22	N/A
Salary Inflation 1% change	$	8	N/A

Depreciation Policies for Assets Utilizing the Group-Life Method

The Company depreciates its rail assets, including main-line track, locomotives and freight cars, using the group-life method of accounting.  Assets depreciated under the group-life method comprise over 86% of total fixed assets of $37 billion on a gross basis at December 2013. All other assets of the Company are depreciated on a straight-line basis. The group-life method aggregates assets with similar lives and characteristics into groups and depreciates each of these groups as a whole.  When using the group-life method, an underlying assumption is that each group of assets, as a whole, is used and depreciated to the end of its recoverable life.

The Company currently utilizes more than 130 different depreciable asset categories to account for depreciation expense for the railroad assets that are depreciated under the group-life method of accounting.  Examples of depreciable asset categories include 18 different categories for crossties due to the different combinations of density classifications and asset types.  By utilizing various depreciable categories, the Company can more accurately account for the use of its assets.  All assets of the Company are depreciated on a time or life basis.

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Critical Accounting Estimates, continued

The Company believes the group-life method of depreciation closely approximates the straight-line method of depreciation.  Additionally, due to the nature of most of its assets (e.g., track is one contiguous, connected asset), the Company believes that this is the most effective way to properly depreciate its assets.

Under the group-life method of accounting, the service lives and salvage values for each group of assets are determined by completing periodic depreciation studies and applying management's assumptions regarding the service lives of its properties.  A depreciation study (also referred to as a life study) is the periodic review of asset service lives, salvage values, accumulated depreciation, and other related factors for group assets conducted by a third-party specialist, analyzed by the Company’s management and approved by the Surface Transportation Board (“STB”), the regulatory board that has broad jurisdiction over railroad practices.  The STB requires depreciation studies be performed for equipment assets every three years and for road (e.g. bridges and signals) and track (e.g., rail, ties and ballast) assets every six years.  In 2012, the Company completed a depreciation study for its equipment assets and a technical update (an update to the prior depreciation study) for its road and track assets. The Company plans to perform a road and track asset depreciation study during 2014. The Company believes the frequency currently required by the STB provides adequate review of asset service lives and that a more frequent review would not result in a material change due to the long-lived nature of most of the assets.

Changes in asset service lives due to the results of the depreciation studies are applied on a prospective basis and could significantly impact future periods’ depreciation expense, and thus, the Company's results of operations.

There are several factors taken into account during the depreciation study and they include:

• statistical analysis of historical life and salvage data for each group of property;

• statistical analysis of historical retirements for each group of property;

• evaluation of current operations;

• evaluation of technological advances and maintenance schedules;

• previous assessment of the condition of the assets and outlook for their continued use;

• expected net salvage to be received upon retirement; and

• comparison of assets to the same asset groups with other companies.

For retirements or disposals of depreciable rail assets that occur in the ordinary course of business, the asset cost (net of salvage value or sales proceeds) is charged to accumulated depreciation and no gain or loss is recognized.  As individual assets within a specific group are retired, resulting gains and losses are recorded in accumulated depreciation.  As part of the depreciation study, an assessment of the recorded amount of accumulated depreciation is made to determine if it is deficient (or in excess) of the appropriate amount indicated by the study. Any such deficiency (or excess), including any deferred gains or losses, is amortized as a component of depreciation expense over the remaining service life of the asset group until the next required depreciation study. Since the overall assumption with group-life is that the assets within the group on average have the same service life and characteristics, it is therefore concluded that the deferred gains and losses offset over time.

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Critical Accounting Estimates, continued

In the event that large groups of assets are removed from service as a result of unusual acts or sales, resulting gains and losses are recognized immediately. These acts are not considered to be in the normal course of business and are therefore recognized when incurred.  Examples of such acts would be the major destruction of assets due to significant storm damage (e.g., major hurricanes), the sale of a rail line segment to another railroad or the disposal of an entire class of assets (e.g., disposal of all refrigerated freight cars).

Recent experience with depreciation studies has resulted in depreciation rate changes which did not materially affect the Company’s annual depreciation expense of $1.1 billion and $1 billion for 2013 and 2012, respectively.  A 1% change in the average life of all group-life assets would result in an approximate $10 million change to the Company’s annual depreciation expense.  

Income Taxes

CSX accounts for income taxes in accordance with the Income Taxes Topic in the ASC that addresses how tax benefits claimed or expected to be claimed on a tax return should be recorded in the financial statements.  Under this topic, the Company recognizes the tax benefit from an uncertain tax position only if it is more likely than not that the tax position will be sustained on examination by the taxing authorities based on the technical merits of the position.  The tax benefits recognized in the financial statements from such a position are measured based on the largest benefit that has a greater than 50 percent likelihood of being realized upon ultimate resolution.

CSX files a consolidated federal income tax return, which includes its principal domestic subsidiaries. Examinations of the federal income tax returns of CSX have been completed through 2011.  The federal income tax return for 2012 is currently under review.  During 2013, the Company participated in a contemporaneous Internal Revenue Service (“IRS”) audit of tax year 2013.  Management believes an adequate provision has been made for any adjustments that might be assessed.  While the final outcome of these matters cannot be predicted with certainty, it is the opinion of CSX management that none of these items will have a material adverse effect on the financial condition, results of operations or liquidity of CSX.  An unexpected adverse resolution of one or more of these items, however, could have a material adverse effect on the results of operations in a particular fiscal quarter or fiscal year.   As of December 2013, the Company’s uncertain tax positions were $23 million.

New Accounting Pronouncements and Change in Accounting Policy

See Note 1, Nature of Operations and Significant Accounting Policies under the caption, “New Accounting Pronouncements and Changes in Accounting Policy.”

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FORWARD-LOOKING STATEMENTS

Certain statements in this report and in other materials filed with the SEC, as well as information included in oral statements or other written statements made by the Company, are forward-looking statements. The Company intends for all such forward-looking statements to be covered by the safe harbor provisions for forward-looking statements within the meaning of the Private Securities Litigation Reform Act of 1995 and the provisions of Section 27A of the Securities Act of 1933 and Section 21E of the Securities Exchange Act of 1934. These forward-looking statements within the meaning of the Private Securities Litigation Reform Act may contain, among others, statements regarding:

• projections and estimates of earnings, revenues, volumes, rates, cost-savings, expenses, taxes or other financial items;

• expectations as to results of operations and operational initiatives;

• expectations as to the effect of claims, lawsuits, environmental costs, commitments, contingent liabilities, labor negotiations or agreements on the Company's financial condition, results of operations or liquidity;

• management's plans, strategies and objectives for future operations, capital expenditures, dividends, share repurchases, safety and service performance, proposed new services and other matters that are not historical facts, and management's expectations as to future performance and operations and the time by which objectives will be achieved; and

• future economic, industry or market conditions or performance and their effect on the Company's financial condition, results of operations or liquidity.

Forward-looking statements are typically identified by words or phrases such as "will," "should," “believe,” “expect,” “anticipate,” “project,” “estimate,” “preliminary” and similar expressions. The Company cautions against placing undue reliance on forward-looking statements, which reflect its good faith beliefs with respect to future events and are based on information currently available to it as of the date the forward-looking statement is made.    Forward-looking statements should not be read as a guarantee of future performance or results and will not necessarily be accurate indications of the timing when, or by which, such performance or results will be achieved. 

Forward-looking statements are subject to a number of risks and uncertainties and actual performance or results could differ materially from those anticipated by any forward-looking statements. The Company undertakes no obligation to update or revise any forward-looking statement. If the Company does update any forward-looking statement, no inference should be drawn that the Company will make additional updates with respect to that statement or any other forward-looking statements. The following important factors, in addition to those discussed in Part II, Item 1A (Risk Factors) and elsewhere in this report, may cause actual results to differ materially from those contemplated by any forward-looking statements:

• legislative, regulatory or legal developments involving transportation, including rail or intermodal transportation, the environment, hazardous materials, taxation, and initiatives to further regulate the rail industry;

• the outcome of litigation, claims and other contingent liabilities, including, but not limited to, those related to fuel surcharge, environmental matters, taxes, shipper and rate claims subject to adjudication, personal injuries and occupational illnesses;

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• changes in domestic or international economic, political or business conditions, including those affecting the transportation industry (such as the impact of industry competition, conditions, performance and consolidation) and the level of demand for products carried by CSXT;

• natural events such as severe weather conditions, including floods, fire, hurricanes and earthquakes, a pandemic crisis affecting the health of the Company's employees, its shippers or the consumers of goods, or other unforeseen disruptions of the Company's operations, systems, property or equipment;

• competition from other modes of freight transportation, such as trucking and competition and consolidation within the transportation industry generally;

• the cost of compliance with laws and regulations that differ from expectations (including those associated with Positive Train Control implementation) and costs, penalties and operational impacts associated with noncompliance with applicable laws or regulations;

• the impact of increased passenger activities in capacity-constrained areas, including potential effects of high speed rail initiatives, or regulatory changes affecting when CSXT can transport freight or service routes;

• unanticipated conditions in the financial markets that may affect timely access to capital markets and the cost of capital, as well as management's decisions regarding share repurchases;

• changes in fuel prices, surcharges for fuel and the availability of fuel;

• the impact of natural gas prices on coal-fired electricity generation;

• availability of insurance coverage at commercially reasonable rates or insufficient insurance coverage to cover claims or damages;

• the inherent business risks associated with safety and security, including the availability and vulnerability of information technology, adverse economic or operational effects from actual or threatened war or terrorist activities and any governmental response;

• labor and benefit costs and labor difficulties, including stoppages affecting either the Company's operations or customers' ability to deliver goods to the Company for shipment;

• the Company's success in implementing its strategic, financial and operational initiatives;

• changes in operating conditions and costs or commodity concentrations; and

• the inherent uncertainty associated with projecting economic and business conditions.

Other important assumptions and factors that could cause actual results to differ materially from those in the forward-looking statements are specified elsewhere in this report and in CSX's other SEC reports, which are accessible on the SEC's website at www.sec.gov and the Company's website at www.csx.com. The information on the CSX website is not part of this annual report on Form 10-K.

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Item 7A.  Quantitative and Qualitative Disclosures about Market Risk

CSX does not hold or issue derivative financial instruments for trading purposes.  Historically, the Company has used derivative financial instruments to address market risk exposure to fluctuations in interest rates.

At December 2013, CSX had $7 million of floating rate debt obligations outstanding.  A 1% fluctuation in interest rates on these notes would cause less than a $1 million change in interest expense. This amount was determined by considering the impact of a hypothetical interest rate fluctuation on the balances of our floating rate debt at December 27, 2013.

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Item 8. Financial Statements and Supplementary Data

INDEX TO CONSOLIDATED FINANCIAL STATEMENTS
		Page
Report of Independent Registered Public Accounting Firm		52
CSX Corporation
Consolidated Financial Statements and Notes to Consolidated Financial Statements
	Herewith:
Consolidated Income Statements for the Fiscal Years Ended:		53
	December 27, 2013
	December 28, 2012
	December 30, 2011
Consolidated Comprehensive Income Statements for the Fiscal Years Ended:		54
	December 27, 2013
	December 28, 2012
	December 30, 2011
Consolidated Balance Sheets as of:		55
	December 27, 2013
	December 28, 2012
Consolidated Cash Flow Statements for Fiscal Years Ended:		56
	December 27, 2013
	December 28, 2012
	December 30, 2011
Consolidated Statements of Changes in Shareholders' Equity:		57
	December 27, 2013
	December 28, 2012
	December 30, 2011
Notes to Consolidated Financial Statements		58

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Item 8. Financial Statements and Supplementary Data

REPORT OF INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM

To the Shareholders and Board of Directors of CSX Corporation

We have audited the accompanying consolidated balance sheets of CSX Corporation as of December 27, 2013 and December 28, 2012, and the related consolidated statements of income, comprehensive income, cash flows, and changes in shareholders’ equity for each of the three fiscal years ended December 27, 2013.  These financial statements are the responsibility of the Company's management.  Our responsibility is to express an opinion on these financial statements based on our 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 audit to obtain reasonable assurance about whether the financial statements are free of material misstatement. An audit includes examining, on a test basis, evidence supporting the amounts and disclosures in the financial statements. An audit also includes assessing the accounting principles used and significant estimates made by management, as well as evaluating the overall financial statement presentation. We believe that our audits provide a reasonable basis for our opinion.

In our opinion, the financial statements referred to above present fairly, in all material respects, the consolidated financial position of CSX Corporation at December 27, 2013 and December 28, 2012, and the consolidated results of its operations and its cash flows for each of the three fiscal years in the period ended December 27, 2013, in conformity with U.S. generally accepted accounting principles.

We also have audited, in accordance with the standards of the Public Company Accounting Oversight Board (United States), CSX Corporation's internal control over financial reporting as of December 27, 2013, based on criteria established in Internal Control-Integrated Framework issued by the Committee of Sponsoring Organizations of the Treadway Commission (1992 framework) and our report dated February 12, 2014 expressed an unqualified opinion thereon.

/s/ Ernst & Young LLP

Certified Public Accountants

Jacksonville, Florida

February 12, 2014

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Item 8. Financial Statements and Supplementary Data

CONSOLIDATED INCOME STATEMENTS

(Dollars in Millions, Except Per Share Amounts)

	Fiscal Years
	2013			2012 (a)			2011 (a)
Revenue	$	12,026		$	11,763		$	11,795
Expense
Labor and Fringe	3,138			3,020			3,073
Materials, Supplies and Other	2,275			2,156			2,229
Fuel	1,656			1,672			1,668
Depreciation	1,104			1,059			976
Equipment and Other Rents	380			392			379
Total Expense	8,553			8,299			8,325
Operating Income	3,473			3,464			3,470
Interest Expense	(562		)	(566		)	(552		)
Other Income - Net (Note 10)	11			73			22
Earnings Before Income Taxes	2,922			2,971			2,940
Income Tax Expense (Note 11)	(1,058		)	(1,108		)	(1,086		)
Net Earnings	$	1,864		$	1,863		$	1,854
Per Common Share (Note 2)
Net Earnings Per Share
Basic	$	1.83		$	1.80		$	1.71
Assuming Dilution	$	1.83		$	1.79		$	1.70
Average Common Shares Outstanding (Millions)
Basic	1,019			1,038			1,083
Assuming Dilution	1,019			1,040			1,089
Cash Dividends Paid Per Common Share	$	0.59		$	0.54		$	0.45

(a) See the revision of prior period financial statements in Note 1. Nature of Operations and Significant Accounting Policies.

See accompanying Notes to Consolidated Financial Statements

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Item 8. Financial Statements and Supplementary Data

CONSOLIDATED COMPREHENSIVE INCOME STATEMENTS

(Dollars in Millions)

	Fiscal Years
	2013		2012 (a)			2011 (a)
Net Earnings	$	1,864	$	1,863		$	1,854
Other Comprehensive (Loss) Income, Net of Tax:
Pension and Other Post-Employment Benefits	389		(52		)	(88		)
Other	24		(9		)	(16		)
Total Other Comprehensive Income (Loss)	413		(61		)	(104		)
Comprehensive Earnings (Note 14)	$	2,277	$	1,802		$	1,750

(a) See the revision of prior period financial statements in Note 1. Nature of Operations and Significant Accounting Policies.

See accompanying Notes to Consolidated Financial Statements

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Item 8. Financial Statements and Supplementary Data

CONSOLIDATED BALANCE SHEETS

(Dollars in Millions)

	December			December
	2013			2012 (a)
ASSETS
Current Assets:
Cash and Cash Equivalents (Note 1)	$	592		$	784
Short-term Investments	487			587
Accounts Receivable - Net (Note 1)	1,052			1,114
Materials and Supplies	252			274
Deferred Income Taxes	155			119
Other Current Assets	64			75
Total Current Assets	2,602			2,953
Properties	37,184			35,279
Accumulated Depreciation	(9,893		)	(9,229		)
Properties - Net (Note 6)	27,291			26,050
Investment in Conrail (Note 12)	752			695
Affiliates and Other Companies	546			511
Other Long-term Assets	591			514
Total Assets	$	31,782		$	30,723
LIABILITIES AND SHAREHOLDERS' EQUITY
Current Liabilities:
Accounts Payable	$	957		$	948
Labor and Fringe Benefits Payable	587			468
Casualty, Environmental and Other Reserves (Note 5)	151			140
Current Maturities of Long-term Debt (Note 9)	533			780
Income and Other Taxes Payable	91			169
Other Current Liabilities	105			140
Total Current Liabilities	2,424			2,645
Casualty, Environmental and Other Reserves (Note 5)	300			337
Long-term Debt (Note 9)	9,022			9,052
Deferred Income Taxes (Note 11)	8,662			8,096
Other Long-term Liabilities	870			1,457
Total Liabilities	21,278			21,587
Shareholders' Equity:
Common Stock, $1 Par Value (Note 3)	1,009			1,020
Other Capital	61			28
Retained Earnings (Note 1)	9,936			9,010
Accumulated Other Comprehensive Loss (Note 14)	(523		)	(936		)
Noncontrolling Minority Interest	21			14
Total Shareholders' Equity	10,504			9,136
Total Liabilities and Shareholders' Equity	$	31,782		$	30,723

(a) See the revision of prior period financial statements in Note 1. Nature of Operations and Significant Accounting Policies.

Certain prior year data has been reclassified to conform to the current presentation.

See accompanying Notes to Consolidated Financial Statements

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Item 8. Financial Statements and Supplementary Data

CONSOLIDATED CASH FLOW STATEMENTS

(Dollars in Millions)

	Fiscal Years
	2013			2012 (a)			2011 (a)
OPERATING ACTIVITIES
Net Earnings	$	1,864		$	1,863		$	1,854
Adjustments to Reconcile Net Earnings to Net Cash
Provided by Operating Activities:
Depreciation	1,104			1,059			976
Deferred Income Taxes	300			592			609
Contributions to Qualified Pension Plans (Note 8)	—			(275		)	—
Gain on Property Dispositions	(70		)	(166		)	(25		)
Other Operating Activities	(35		)	(64		)	(10		)
Changes in Operating Assets and Liabilities:
Accounts Receivable	(6		)	61			(117		)
Other Current Assets	36			(32		)	(23		)
Accounts Payable	28			(4		)	76
Income and Other Taxes Payable	(67		)	(14		)	116
Other Current Liabilities	113			(74		)	35
Net Cash Provided by Operating Activities	3,267			2,946			3,491
INVESTING ACTIVITIES
Property Additions	(2,313		)	(2,341		)	(2,297		)
Purchase of Short-term Investments	(1,256		)	(633		)	(492		)
Proceeds from Sales of Short-term Investments	1,401			581			74
Proceeds from Property Dispositions	53			186			240
Other Investing Activities	(112		)	(70		)	(112		)
Net Cash Used in Investing Activities	(2,227		)	(2,277		)	(2,587		)
FINANCING ACTIVITIES
Long-term Debt Issued (Note 9)	500			1,100			1,200
Long-term Debt Repaid (Note 9)	(780		)	(508		)	(605		)
Dividends Paid	(600		)	(558		)	(480		)
Stock Options Exercised (Note 4)	9			14			29
Shares Repurchased	(353		)	(734		)	(1,564		)
Other Financing Activities	(8		)	18			7
Net Cash Used in Financing Activities	(1,232		)	(668		)	(1,413		)
Net (Decrease) Increase in Cash and Cash Equivalents	(192		)	1			(509		)
CASH AND CASH EQUIVALENTS
Cash and Cash Equivalents at Beginning of Period	784			783			1,292
Cash and Cash Equivalents at End of Period	$	592		$	784		$	783
SUPPLEMENTAL CASH FLOW INFORMATION
Interest Paid - Net of Amounts Capitalized	$	595		$	592		$	574
Income Taxes Paid	$	824		$	506		$	359

(a) See the revision of prior period financial statements in Note 1. Nature of Operations and Significant Accounting Policies.

Certain prior year data has been reclassified to conform to the current presentation.

See accompanying Notes to Consolidated Financial Statements

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Item 8. Financial Statements and Supplementary Data

CONSOLIDATED STATEMENTS OF CHANGES

IN SHAREHOLDERS’ EQUITY

(Dollars in Millions)

	Common Shares Outstanding(Thousands)		Common Stock and Other Capital			Retained Earnings(a)			Accumulated Other Comprehensive Income (Loss) (b)			Non- controlling Interest			Total Shareholders' Equity
December 31, 2010	1,111,026		$	370		$	9,185		$	(771	)	$	14		$	8,798
Comprehensive Earnings:
Net Earnings	—		—			1,854			—			—			1,854
Other Comprehensive Loss	—		—			—			(104		)	—			(104		)
Total Comprehensive Earnings															1,750
Common stock dividends, $0.45 per share	—		—			(480		)	—			—			(480		)
Share Repurchases	(67,406	)	590			(2,154		)	—			—			(1,564		)
Bond Conversions (Note 2)	675		5			—			—			—			5
Stock Option Exercises and Other	4,862		90			—			—			(1		)	89
December 30, 2011	1,049,157		1,055			8,405			(875		)	13			8,598
Comprehensive Earnings:
Net Earnings	—		—			1,863			—			—			1,863
Other Comprehensive Loss	—		—			—			(61		)	—			(61		)
Total Comprehensive Earnings															1,802
Common stock dividends, $0.54 per share	—		—			(558		)	—			—			(558		)
Share Repurchases	(34,088	)	(34		)	(700		)	—			—			(734		)
Bond Conversions  (Note 2)	155		1			—			—			—			1
Stock Option Exercises and Other	5,261		26			—			—			1			27
December 28, 2012	1,020,485		1,048			9,010			(936		)	14			9,136
Comprehensive Earnings:
Net Earnings	—		—			1,864			—			—			1,864
Other Comprehensive Income	—		—			—			413			—			413
Total Comprehensive Earnings															2,277
Common stock dividends, $0.59 per share	—		—			(600		)	—			—			(600		)
Share Repurchases	(13,791	)	(14		)	(339		)	—			—			(353		)
Bond Conversions (Note 2)	1		—			—			—			—			—
Stock Option Exercises and Other	2,165		36			1			—			7			44
December 27, 2013	1,008,860		$	1,070		$	9,936		$	(523	)	$	21		$	10,504

(a) See the revision of prior period financial statements in Note 1. Nature of Operations and Significant Accounting Policies.

(b) Accumulated Other Comprehensive Loss year-end balances shown above are net of tax.  The associated taxes were $463 million, $496 million and $266 million for 2011, 2012 and 2013, respectively. For additional information see Note 14, Other Comprehensive Income.

See accompanying Notes to Consolidated Financial Statements

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Item 8. Financial Statements and Supplementary Data

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS

NOTE 1.  Nature of Operations and Significant Accounting Policies

Business

CSX Corporation (“CSX”), and together with its subsidiaries (the “Company”), based in Jacksonville, Florida, is one of the nation's leading transportation companies.  The Company provides rail-based transportation services including traditional rail service and the transport of intermodal containers and trailers.

The Company’s annual average number of employees was approximately 31,000 in 2013, which includes approximately 26,000 union employees.  Most of the Company’s employees provide or support transportation services.

CSX Transportation, Inc.

CSX’s principal operating subsidiary, CSX Transportation, Inc. (“CSXT”), provides an important link to the transportation supply chain through its approximately 21,000 route mile rail network, which serves major population centers in 23 states east of the Mississippi River, the District of Columbia and the Canadian provinces of Ontario and Quebec.  It has access to over 70 ocean, river and lake port terminals along the Atlantic and Gulf Coasts, the Mississippi River, the Great Lakes and the St. Lawrence Seaway.  The Company’s intermodal business, also part of CSXT, links customers to railroads via trucks and terminals. CSXT also serves thousands of production and distribution facilities through track connections to approximately 240 short-line and regional railroads.

Lines of Business

During 2013, CSXT’s transportation services generated $12.0 billion of revenue and served three primary lines of business:

• The merchandise business shipped nearly 2.8 million carloads and generated approximately 59% of revenue and 42% of volume in 2013. The Company’s merchandise business is the most diverse market and transports aggregates (which include crushed stone, sand and gravel), metal, phosphate, fertilizer, food, consumer (manufactured goods and appliances), agricultural, automotive, paper and chemical products.

• The coal business shipped 1.2 million carloads and accounted for 24% of revenue and 18% of volume in 2013.  The Company transports domestic coal, coke and iron ore to electricity-generating power plants, steel manufacturers and industrial plants as well as export coal to deep-water port facilities.  Almost half of export coal and nearly all of the domestic coal that the Company transports is used for generating electricity.

• The intermodal business accounted for approximately 14% of revenue and 40% of volume in 2013. The intermodal line of business combines the superior economics of rail transportation with the short-haul flexibility of trucks and offers a competitive cost advantage over long-haul trucking.  Through a network of more than 50 terminals, the intermodal business serves all major markets east of the Mississippi and transports mainly manufactured consumer goods in containers, providing customers with truck-like service for longer shipments.

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NOTE 1.  Nature of Operations and Significant Accounting Policies, continued

Other revenue accounted for approximately 3% of the Company’s total revenue in 2013.  This revenue category includes revenue from regional subsidiary railroads, demurrage, revenue for customer volume commitments not met, switching and other incidental charges. Revenue from regional railroads includes shipments by railroads that the Company does not directly operate.  Demurrage represents charges assessed when freight cars are held beyond a specified period of time.  Switching revenue is primarily generated when CSXT switches cars for a customer or another railroad.

Other Entities

In addition to CSXT, the Company’s subsidiaries include CSX Intermodal Terminals, Inc. (“CSX Intermodal Terminals”), Total Distribution Services, Inc. (“TDSI”), Transflo Terminal Services, Inc. (“Transflo”), CSX Technology, Inc. (“CSX Technology”) and other subsidiaries.   CSX Intermodal Terminals owns and operates a system of intermodal terminals, predominantly in the eastern United States and also performs drayage services (the pickup and delivery of intermodal shipments) for certain CSXT customers and trucking dispatch operations.  TDSI serves the automotive industry with distribution centers and storage locations.  Transflo connects non-rail served customers to the many benefits of rail by transferring products from rail to trucks.  Today, the biggest Transflo markets are chemicals and agriculture, such as minerals and ethanol. CSX Technology and other subsidiaries provide support services for the Company.

CSX’s other holdings include CSX Real Property, Inc., a subsidiary responsible for the Company’s real estate sales, leasing, acquisition and management and development activities.  These activities are classified in other income - net because they are not considered to be operating activities by the Company.  Results of these activities fluctuate with the timing of non-operating real estate transactions.

Basis of Presentation

In the opinion of management, the accompanying consolidated financial statements contain all normal, recurring adjustments necessary to present fairly the financial position of CSX and its subsidiaries at December 27, 2013 and December 28, 2012, and the consolidated statements of income, comprehensive income, cash flows and changes in shareholders’ equity for fiscal years 2013, 2012 and 2011.

In addition, management has evaluated and disclosed all material events occurring subsequent to the date of the financial statements up to the date this annual report is filed on Form 10-K.

Fiscal Year

CSX follows a 52/53 week fiscal reporting calendar.  This fiscal calendar allows every quarter to consistently end on a Friday and typically, to be of equal duration (13 weeks), resulting in a 52 week fiscal year.  To maintain this type of reporting calendar every fifth or sixth year (depending on the Gregorian calendar and when leap year falls), an extra week will be included in the fourth quarter (a 14-week fiscal quarter) and, therefore, that full fiscal year will have 53 weeks.  The next 53 week fiscal year will be 2016, which will end on December 30, 2016.

Fiscal years 2013, 2012 and 2011 each consisted of 52 weeks ending on December 27, 2013, December 28, 2012 and December 30, 2011, respectively.  Except as otherwise specified, references to full year indicate CSX’s fiscal periods ended on these dates.

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NOTE 1.  Nature of Operations and Significant Accounting Policies, continued

Principles of Consolidation

The consolidated financial statements include results of operations of CSX and subsidiaries over which CSX has majority ownership or financial control. All significant intercompany accounts and transactions have been eliminated. Most investments in companies that were not majority-owned were carried at cost (if less than 20% owned and the Company has no significant influence) or equity (if the Company has significant influence).

Cash, Cash Equivalents and Short-term Investments

On a daily basis, cash in excess of current operating requirements is invested in various highly liquid investments having a typical maturity date of three months or less at the date of acquisition. These investments were carried at cost, which approximated market value, and were classified as cash equivalents. Investments in instruments with original maturities greater than three months but less than one year were classified as short-term investments.

Allowance for Doubtful Accounts

The Company maintains an allowance for doubtful accounts on uncollectible amounts related to freight receivables, government reimbursement receivables, claims for damages and other various receivables. The allowance is based upon the credit worthiness of customers, historical experience, the age of the receivable and current market and economic conditions. Uncollectible amounts are charged against the allowance account. Allowance for doubtful accounts of $33 million and $36 million is included in the consolidated balance sheets as of December 2013 and December 2012, respectively.

Materials and Supplies

Materials and supplies in the consolidated balance sheets are carried at average costs and consist primarily of fuel and parts used in the repair and maintenance of CSXT’s freight car and locomotive fleets, equipment and track structure.

Goodwill

Goodwill represents purchase price in excess of fair value and is related to affiliates of CSXT, primarily P&L Transportation, Inc. Goodwill of $64 million is recorded in other long-term assets in the consolidated balance sheets as of December 2013 and 2012.

Revenue and Expense Recognition

The Company recognizes freight revenue using Free-On-Board Origin pursuant to the Revenue Recognition Topic in the ASC.  Accounting guidance in this topic provides for the allocation of revenue between reporting periods based on relative transit time in each reporting period.  Expenses are recognized as incurred.

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NOTE 1.  Nature of Operations and Significant Accounting Policies, continued

The certain key estimates included in the recognition and measurement of revenue and related accounts receivable under the policies described above are as follows:

• revenue associated with shipments in transit, which are based on historical freight car movement data as well as average cycle times to move commodities and products from their origin to their final destination or interchange;

• adjustments to revenue for billing corrections, billing discounts and bad debts or to accounts receivable for allowances for doubtful accounts;

• adjustments to revenue for overcharge claims filed by customers, which are based on historical cash paid to customers for rate overcharges as a percentage of total billing;

• incentive-based refunds to customers, which are primarily based on customers achieving certain volume thresholds and are recorded as a reduction to revenue on the basis of management’s best estimate of the projected liability  (this estimate is based on historical activity, current volume levels and a forecast of future volume).

The Company regularly updates the estimates described above based on historical experience and current conditions.  All other revenue, such as demurrage, switching and other incidental charges are recorded upon completion of the service. Amounts received for customer volume commitments not met are recorded upon the completion of the contract term.

New Accounting Pronouncements

In February 2013, the Financial Accounting Standards Board ("FASB") issued an Accounting Standards Update to the Comprehensive Income Topic in the Accounting Standards Codifications ("ASC"). This update requires separate presentation of the components that are reclassified out of accumulated other comprehensive income either on the face of the financial statements or in the notes to the financial statements. This update also requires companies to disclose the income statement line items impacted by any significant reclassifications, such as the amortization of pension and other post-employment benefits adjustments. These items are required for both interim and annual reporting for public companies and became effective for CSX beginning with the first quarter 2013 Form 10-Q filing.

Use of Estimates

The preparation of financial statements in conformity with accounting principles generally accepted in the United States requires that management make estimates in reporting the amounts of certain assets and liabilities, the disclosure of contingent assets and liabilities at the date of the financial statements and the reported amount of certain revenues and expenses during the reporting period.  Actual results may differ from those estimates.  Critical accounting estimates using management judgment are made for the following areas:

• casualty, environmental and legal reserves (see Note 5, Casualty, Environmental and Other Reserves);

• pension and post-retirement medical plan accounting (see Note 8, Employee Benefit Plans);

• depreciation policies for assets under the group-life method (see Note 6, Properties); and

• income taxes (see Note 11, Income Taxes).

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NOTE 1.  Nature of Operations and Significant Accounting Policies, continued

Revision of Prior Period Financial Statements

During the fourth quarter of 2013, CSX completed a review of certain accounts receivable balances which resulted in an adjustment to previously reported revenue. This review identified immaterial differences between estimated and actual revenue earned on a small percentage of transactions as well as a small percentage of revenue over at least a decade.

In accordance with ASC 250 Accounting Changes and Error Corrections as well as the SEC's Staff Accounting Bulletin No. 99, Materiality, the Company evaluated the materiality of this error on prior period financial statements and determined that it did not result in a material misstatement to the financial conditions, results of operations, or liquidity for any of the periods presented.

The Company also determined that the effect of recording all corrections during the fourth quarter of 2013 would have been material to the financial statements. As a result, prior period financial statements have been revised to correct the errors in accordance with ASC 250 and the SEC's Staff Accounting Bulletin No. 108, Considering the Effects of Prior Year Misstatements when Quantifying Misstatements in Current Year Financial Statements, as shown in the tables below.

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NOTE 1.  Nature of Operations and Significant Accounting Policies, continued

Dollars in Millions, Except Per Share Amounts	2012									2011
Consolidated Income Statements	As Previously Reported			Adjustment			As Revised			As Previously Reported			Adjustment			As Revised
Revenue	$	11,756		$	7		$	11,763		$	11,743		$	52		$	11,795
Operating Income	3,457			7			3,464			3,418			52			3,470
Earnings Before Income Taxes	2,964			7			2,971			2,888			52			2,940
Income Tax Expense	(1,105		)	(3		)	(1,108		)	(1,066		)	(20		)	(1,086		)
Net Earnings	1,859			4			1,863			1,822			32			1,854
Net Earnings Per Share, Basic	$	1.79		$	0.01		$	1.80		$	1.68		$	0.03		$	1.71
Net Earnings Per Share, Assuming Dilution	$	1.79		$	—		$	1.79		$	1.67		$	0.03		$	1.70
Consolidated Comprehensive Income Statements
Net Earnings	$	1,859		$	4		$	1,863		$	1,822		$	32		$	1,854
Comprehensive Earnings	1,798			4			1,802			1,718			32			1,750
Consolidated Balance Sheets
Accounts Receivable - Net	$	962		$	152		$	1,114		$	1,000		$	147		$	1,147
Total Current Assets	2,801			152			2,953			2,806			147			2,953
Total Assets	30,571			152			30,723			29,344			147			29,491
Accounts Payable	1,014			(66		)	948			1,018			(64		)	954
Income and Other Taxes Payable	85			84			169			129			81			210
Total Current Liabilities	2,627			18			2,645			2,558			17			2,575
Total Liabilities	21,569			18			21,587			20,876			17			20,893
Retained Earnings	8,876			134			9,010			8,275			130			8,405
Total Shareholders' Equity	9,002			134			9,136			8,468			130			8,598
Total Liabilities and Shareholders' Equity	$	30,571		$	152		$	30,723		$	29,344		$	147		$	29,491
Consolidated Cash Flow Statements
Net Earnings	$	1,859		$	4		$	1,863		$	1,822		$	32		$	1,854
Changes in Operating Assets and Liabilities
Accounts Receivable	67			(6		)	61			(59		)	(58		)	(117		)
Accounts Payable	(3		)	(1		)	(4		)	70			6			76
Income and Other Taxes Payable	(17		)	3			(14		)	96			20			116
Net Cash Provided by Operating Activities	$	2,946		$	—		$	2,946		$	3,491		$	—		$	3,491
Statement of Changes in Shareholders' Equity	2010
Retained Earnings	$	9,087		$	98		$	9,185

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CSX CORPORATION

PART II

Item 8. Financial Statements and Supplementary Data

NOTE 1.  Nature of Operations and Significant Accounting Policies, continued

Other Items - Share Repurchases

In April 2013, the Company announced a new $1 billion share repurchase program, which is expected to be completed by April 2015. Management's assessment of market conditions and pertinent facts guide the timing and volume of all repurchases. Future share repurchases are expected to be funded by cash on hand, cash generated from operations and debt issuances.

During 2013, CSX repurchased $353 million, or 14 million in shares of common stock under the new share repurchase program. Additionally, the Company repurchased a total of $734 million, or 34 million shares, and $1.6 billion, or 67 million shares, in 2012 and 2011, respectively, under previous share repurchase programs. In accordance with the Equity Topic in the ASC, the excess of repurchase price over par value is recorded in retained earnings. Generally, retained earnings is only impacted by net earnings and dividends.

NOTE 2.  Earnings Per Share

The following table sets forth the computation of basic earnings per share and earnings per share, assuming dilution:

	Fiscal Years
	2013		2012 (a)		2011 (a)
Numerator (Dollars in Millions):
Net Earnings	$	1,864	$	1,863	$	1,854
Dividend Equivalents on Restricted Stock	1		1		1
Net Earnings, Attributable to Common Shareholders	$	1,865	$	1,864	$	1,855
Denominator (Units in Millions):
Average Common Shares Outstanding	1,019		1,038		1,083
Other Potentially Dilutive Common Shares (b)	—		2		6
Average Common Shares Outstanding, Assuming Dilution	1,019		1,040		1,089
Net Earnings Per Share, Basic	$	1.83	$	1.80	$	1.71
Net Earnings Per Share, Assuming Dilution	$	1.83	$	1.79	$	1.70

(a) See the revision of prior period financial statements in Note 1. Nature of Operations and Significant Accounting Policies.

(b) Other potentially dilutive common shares include convertible debt, stock options, common stock equivalents and performance units granted under a long-term management incentive compensation plan.

Basic earnings per share is based on the weighted-average number of shares of common stock outstanding.  Earnings per share, assuming dilution, is based on the weighted-average number of shares of common stock outstanding adjusted for the effects of common stock that may be issued as a result of the following types of potentially dilutive instruments:

• convertible debt;

• employee stock options; and

• other equity awards, which include long-term incentive awards.

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PART II

Item 8. Financial Statements and Supplementary Data

NOTE 2.  Earnings Per Share, continued

The Earnings Per Share Topic in the ASC requires CSX to include additional shares in the computation of earnings per share, assuming dilution.  The additional shares included in diluted earnings per share represent the number of shares that would be issued if all of the above potentially dilutive instruments were converted into CSX common stock.

When calculating diluted earnings per share, the Earnings Per Share Topic in the ASC requires CSX to include the potential shares that would be outstanding if all outstanding stock options were exercised.   This is offset by shares CSX could repurchase using the proceeds from these hypothetical exercises to obtain the common stock equivalent.  This number is different from outstanding stock options, which is included in Note 4, Stock Plans and Share-Based Compensation.  All stock options were dilutive for the periods presented; therefore, no stock options were excluded from the diluted earnings per share calculation.

Diluted shares outstanding are not impacted when debentures are converted into CSX common stock because those shares were already included in the diluted shares calculation.  Shares outstanding for basic earnings per share, however, are impacted on a weighted-average basis when conversions occur.  During 2013 and 2012, $7 thousand and $2 million, respectively, of face value convertible debentures were converted into approximately 1 thousand shares and 155 thousand shares of CSX common stock, respectively.  As of December 2013, approximately $2 million of convertible debentures at face value remained outstanding, which are convertible into 244 thousand shares of CSX common stock.

NOTE 3. Shareholders’ Equity

Common and preferred stock consists of the following:

Common Stock, $1 Par Value	December 2013
	(Units in Millions)
Common Shares Authorized	1,800
Common Shares Issued and Outstanding	1,009
Preferred Stock
Preferred Shares Authorized	25
Preferred Shares Issued and Outstanding	—

Holders of common stock are entitled to one vote on all matters requiring a vote for each share held.  Preferred stock is senior to common stock with respect to dividends and upon liquidation of CSX.

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PART II

Item 8. Financial Statements and Supplementary Data

NOTE 4.  Stock Plans and Share-Based Compensation

Under CSX's share-based compensation plans, awards primarily consist of performance grants, restricted stock awards, restricted stock units, stock options and stock grants for directors.  Awards granted under the various programs are determined and approved by the Compensation Committee of the Board of Directors or, in certain circumstances, by the Chief Executive Officer for awards to management employees other than senior executives.  The Board of Directors approves awards granted to the Company’s non-management directors upon recommendation of the Governance Committee.

The Compensation-Stock Compensation Topic in the ASC requires the cash flows resulting from income tax deductions in excess of compensation costs to be classified as financing cash flows.  This requirement resulted in reduced net operating cash flows and increased net financing cash flows of approximately $13 million, $37 million and $35 million for fiscal years 2013, 2012 and 2011, respectively.

The Compensation-Stock Compensation Topic also requires the disclosure of total compensation costs for share-based payment arrangements and the related tax benefits recognized in income. Share-based compensation expense is measured at the fair market value of the Company’s stock on the grant date and is recognized on a straight-line basis over the service period of the respective award.  Total pre-tax expense associated with share-based compensation and its related income tax benefit is as follows:

	Fiscal Years
(Dollars in Millions)	2013		2012		2011
Share-Based Compensation Expense	$	14	$	14	$	30
Income Tax Benefit	6		5		11

Stock Options

Stock options have not been granted since 2003. As of December 2013, there were no current or former employees with stock options outstanding, as all remaining stock options expired in May 2013.  The exercise price for options granted equals the market price of the underlying stock on the grant date.  The total intrinsic value of options exercised for fiscal years ended 2013, 2012, and 2011 was $27 million, $37 million, and $84 million, respectively. This value represents the value realized by current and former employees who exercised options.

A summary of CSX's stock option activity and related information for the fiscal years 2013, 2012 and 2011 is as follows:

	Fiscal Years
	2013				2012				2011
	Options Outstanding (Thousands)		Weighted- Average Exercise Price		Options Outstanding (Thousands)		Weighted- Average Exercise Price		Options Outstanding (Thousands)		Weighted- Average Exercise Price
Outstanding & Exercisable at Beginning of Year	1,672		$	5.36	4,145		$	5.64	9,111		$	5.82
Expired or Cancelled	(9	)	5.36		(15	)	6.36		(27	)	6.44
Exercised	(1,663	)	5.36		(2,458	)	5.83		(4,939	)	5.96
Outstanding & Exercisable at End of Year	—		$	—	1,672		$	5.36	4,145		$	5.64

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PART II

Item 8. Financial Statements and Supplementary Data

NOTE 4.  Stock Plans and Share-Based Compensation, continued

Restricted Stock Grants

Restricted stock grants consist of units and awards. Restricted stock units are granted as part of the Company's long-term incentive plan, with each unit being equivalent to one share of CSX stock and vest over three years.  Restricted stock awards generally vest over an employment period of up to five years. The following table provides information about outstanding restricted stock units and awards combined.  As of December 2013, unrecognized compensation expense for these awards and units was approximately $17 million, which will be expensed over a weighted-average remaining period of 2 years.

	Fiscal Years
	2013		2012		2011
Restricted Stock Units and Awards Outstanding (Thousands)(a)	1,462		1,353		1,572
Weighted-Average Fair Value at Grant Date	$	23.89	$	21.38	$	16.91
Restricted Stock Units and Awards Expense (Millions)(a)	10		9		7
Unvested Restricted Stock Units and Awards Outstanding (Thousands)	705		629		678
Weighted-Average Fair Value of Unvested Units and Awards Outstanding	$	24.17	$	22.48	$	20.93

(a)  Time-based restricted stock units were granted to certain employees under the respective Long-term Incentive Plans in the amount of 524,000, 433,000, and 361,000 in 2013, 2012, and 2011, respectively, as described below.  These units vest over three years, therefore only a partial amount of expense was recognized in 2013, 2012, and 2011, respectively.

Long-term Incentive Plans

The CSX Long-term Incentive Plans (“LTIP”) were adopted under the 2010 CSX Stock and Incentive Award Plan. The objective of these long-term incentive plans is to motivate and reward certain employees for achieving and exceeding certain financial and strategic initiatives.

In May of 2011, 2012 and 2013, target performance units were granted to certain employees under three separate LTIP plans covering three-year cycles: the 2011-2013 (“2013 LTIP”), 2012-2014 (“2014 LTIP”) and 2013-2015 (“2015 LTIP”) plans (collectively, the “Plans”). The key financial target for the 2013 and 2014 plans is based solely on operating ratio (operating expense divided by operating revenue) and excludes certain non-recurring items as disclosed in the Company's financial statements. The key financial targets for the 2015 plan will be based on the achievement of goals related to both operating ratio and return on assets (tax-adjusted operating income divided by net property) excluding non-recurring items as disclosed in the Company's financial statements. The three-year average operating ratio and return on assets over the performance period will each comprise 50% of the payout and are measured independently of the other.

Grants were made in performance units, with each unit being equivalent to one share of CSX common stock, and payouts will be made in CSX common stock.  The payout range for participants will be between 0% and 200% of the target awards depending on Company performance against predetermined goals for each three-year cycle. The 2013 and 2014 plans provides that payouts for certain executive officers are subject to downward adjustment by up to 30% based upon Company performance against certain CSX strategic initiatives. The 2015 plan states that payouts for certain executive officers are subject to downward adjustment by up to 30% based upon total shareholder return relative to specified comparable groups.  Total expense incurred due to long-term incentive plans was $2 million, $3 million and $21 million for fiscal years 2013, 2012 and 2011, respectively.

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CSX CORPORATION

PART II

Item 8. Financial Statements and Supplementary Data

NOTE 4.  Stock Plans and Share-Based Compensation, continued

The 2013 plan ended on December 27, 2013, and CSX did not issue any shares in January 2014 as applicable performance targets for the three preceding fiscal years were not met.

	LTIP Plan (Plan Ended In)
	2013		2014		2015
Number of target units outstanding (Thousands)(a)	1,080		1,340		1,318
Weighted-average fair value at grant date (a)	$	25.63	$	22.13	$	25.32
Payout Range	0% - 200%		0% - 200%		0% - 200%

(a) Number of target units granted and weighted-average fair value calculations above include the value of both initial grants and subsequent, smaller grants issued at different prices based on grant date fair value to new or promoted employees not previously included.

Restricted Stock Units

As part of the 2013, 2014 and 2015 plans, 361 thousand, 433 thousand and 524 thousand restricted stock units, respectively, were granted.  The restricted stock units vest three years after the date of grant. Participants receive cash dividend equivalents on the unvested shares during the restriction period.  These awards are time-based and are not based upon CSX’s attainment of operational targets.  The restricted stock units and expenses are included in the information as shown within the Restricted Stock Grants section above.

As of December 2013, there was $29 million of total unrecognized compensation cost related to these plans that is expected to be recognized over a weighted-average period of approximately 2 years.  The activity related to each of the outstanding long-term incentive plans is summarized as follows:

	LTIP Plan (Plan Ended In)						Weighted-Average Fair Value at Grant Date
(Units Outstanding, in Thousands)	2013		2014		2015
Unvested at December 30, 2011	991		—		—		$	25.92
Granted in 2012	65		1,325		—		21.97
Forfeited in 2012	(2	)	(69	)	—		(21.99		)
Unvested at December 28, 2012	1,054		1,256		—		23.66
Granted in 2013	26		85		1,354		25.24
Forfeited in 2013	—		(1	)	(36	)	(25.31		)
Cancelled due to performance conditions(a)	(1,080	)	—		—		25.63
Vested at December 27, 2013	—		—		—		—
Unvested at December 27, 2013	—		1,340		1,318		$	23.73

(a) The minimum financial target was not met in 2013. As a result, there was no performance unit payout for the LTIP ended December 27, 2013.

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PART II

Item 8. Financial Statements and Supplementary Data

NOTE 4.  Stock Plans and Share-Based Compensation, continued

Stock Awards for Directors

CSX’s non-management directors receive an annual retainer of $75,000 to be paid quarterly in cash, unless the director chooses to receive the retainer in the form of CSX common stock. Additionally, non-management directors receive an annual grant of common stock in the amount of approximately $150,000, with the number of shares to be granted based on the average closing price of CSX stock in the months of November, December and January.   The following table provides information about shares issued to directors.

	Fiscal Years
	2013		2012		2011
Shares Issued to Directors (Thousands)	105		102		93
Expense (Millions)	$	2	$	2	$	2
Weighted Average Grant Date Stock Price	$	23.12	$	21.92	$	23.46

The directors may elect to defer receipt of their fees, in accordance with Internal Revenue Code Section 409A.  Deferred cash amounts were credited to an account and invested in a choice of eight investment selections, including a CSX common stock equivalent fund.  Distributions are made in accordance with elections made by the directors, consistent with the terms of the Directors' Deferred Compensation Plan.  

NOTE 5.  Casualty, Environmental and Other Reserves

Activity related to casualty, environmental and other reserves is as follows:

	Casualty			Environmental			Other
(Dollars in Millions)	Reserves			Reserves			Reserves			Total
December 31, 2010	$	375		$	107		$	59		$	541
Charged to Expense	68			23			41			132
Payments	(71		)	(47		)	(36		)	(154		)
December 30, 2011	372			83			64			519
Charged to Expense	51			35			36			122
Payments	(98		)	(30		)	(36		)	(164		)
December 28, 2012	325			88			64			477
Charged to Expense	54			48			38			140
Payments	(99		)	(36		)	(31		)	(166		)
December 27, 2013	$	280		$	100		$	71		$	451

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CSX CORPORATION

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Item 8. Financial Statements and Supplementary Data

NOTE 5.  Casualty, Environmental and Other Reserves, continued

These reserves are considered critical accounting estimates due to the need for significant management judgments. They are provided for in the consolidated balance sheets as follows:

	December 2013						December 2012
(Dollars in Millions)	Current		Long-term		Total		Current		Long-term		Total
Casualty:
Personal Injury	$	59	$	148	$	207	$	75	$	158	$	233
Occupational	3		20		23		5		31		36
Asbestos	10		40		50		8		48		56
Total Casualty	72		208		280		88		237		325
Environmental	59		41		100		33		55		88
Other	20		51		71		19		45		64
Total	$	151	$	300	$	451	$	140	$	337	$	477

These liabilities are accrued when estimable and probable in accordance with the Contingencies Topic in the ASC. Actual settlements and claims received could differ.  The final outcome of these matters cannot be predicted with certainty.  Considering the legal defenses currently available, the liabilities that have been recorded and other factors, it is the opinion of management that none of these items individually, when finally resolved, will have a material effect on the Company's financial condition, results of operations or liquidity.  Should a number of these items occur in the same period, however, they could have a material effect on the Company's financial condition, results of operations or liquidity in that particular period.

Casualty

Casualty reserves of $280 million for 2013 represent accruals for personal injury, occupational injury and asbestos claims.  The Company's self-insured retention amount for these claims is $50 million per occurrence.  Currently, no individual claim is expected to exceed the self-insured retention amount.  In accordance with the Contingencies Topic in the ASC, to the extent the value of an individual claim exceeds the self-insured retention amount, the Company would present the liability on a gross basis with a corresponding receivable for insurance recoveries.  These reserves fluctuate based upon the timing of payments as well as changes in independent third-party estimates, which are reviewed by management.  Actual results may vary from estimates due to the number, type and severity of the injury, costs of medical treatments and uncertainties in litigation. Most of the claims relate to CSXT unless otherwise noted below.  Defense and processing costs, which historically have been insignificant and are anticipated to be insignificant in the future, are not included in the recorded liabilities. During 2013, 2012 and 2011, there were no significant changes in estimate recorded to adjust casualty reserves.

Personal Injury

Personal injury reserves represent liabilities for employee work-related and third-party injuries.  Work-related injuries for CSXT employees are primarily subject to the Federal Employers’ Liability Act (“FELA”).  In addition to FELA liabilities, employees of other CSX subsidiaries are covered by various state workers’ compensation laws, the Federal Longshore and Harbor Workers’ Compensation Program or the Maritime Jones Act.

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Item 8. Financial Statements and Supplementary Data

NOTE 5.  Casualty, Environmental and Other Reserves, continued

CSXT retains an independent actuarial firm to assist management in assessing the value of personal injury claims.  An analysis is performed by the independent actuarial firm quarterly and is reviewed by management. The methodology used by the actuary includes a development factor to reflect growth or reduction in the value of these personal injury claims. It is based largely on CSXT's historical claims and settlement experience.

Occupational & Asbestos

     Occupational claims arise from allegations of exposures to certain materials in the workplace, such as solvents, soaps, chemicals (collectively referred to as “irritants”) and diesel fuels (like exhaust fumes) or allegations of chronic physical injuries resulting from work conditions, such as repetitive stress injuries, carpal tunnel syndrome and hearing loss.

The Company is also party to a number of asbestos claims by employees alleging exposure to asbestos in the workplace.  The heaviest possible exposure for employees resulted from work conducted in and around steam locomotive engines that were largely phased out beginning around the 1950s. Other types of exposures, however, including exposure from locomotive component parts and building materials, continued until these exposures were substantially eliminated by 1985.  Additionally, the Company has retained liability for asbestos claims filed against its previously owned international container shipping business.  Diseases associated with asbestos typically have long latency periods (amount of time between exposure to asbestos and the onset of the disease) which can range from 10 to 40 years after exposure.

Occupational and asbestos claims are analyzed by a third-party actuary or specialist (the "third-party specialist"), respectively, in order to determine the number of unasserted or incurred but not reported (“IBNR”) claims. Occupational claims analyses are performed by the third-party specialist quarterly and are reviewed by management. Since exposure to asbestos has been substantially eliminated, management reviews asserted asbestos claims quarterly and the review by the third-party specialist is completed annually. With the exception of carpal tunnel, management has determined that seven years is the most probable time period in which unasserted claim filings and claim values can be estimated.  Carpal tunnel claims use a three-year period to estimate the reserve due to the shorter latency period for these types of injuries.

The third party specialists analyze CSXT’s historical claim filings, settlement amounts, and dismissal rates to determine future anticipated claim filing rates and average settlement values for occupational and asbestos claims reserves.  The potentially exposed population is estimated by using CSX’s employment records and industry data. From this analysis, the third-party specialists provide an estimate of the IBNR claims liability.

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Item 8. Financial Statements and Supplementary Data

NOTE 5.  Casualty, Environmental and Other Reserves, continued

Undiscounted liabilities recorded related to occupational and asbestos claims were as follows:

	December		December
(Dollars in Millions)	2013		2012
Occupational:
Incurred but not reported claims	$	15	$	24
Asserted claims	8		12
Total liability	$	23	$	36
Asbestos:
Incurred but not reported claims	$	35	$	37
Asserted claims	15		19
Total liability	$	50	$	56

During 2013 and 2012, there were no significant changes in estimate of occupational or asbestos reserves. A summary of occupational and asbestos claims activity is as follows:

	Fiscal Years
	2013		2012
Asserted Claims
Open Claims - Beginning of Year	523		746
New Claims Filed	165		160
Claims Settled	(146	)	(154	)
Claims Dismissed	(150	)	(229	)
Open Claims - End of Year	392		523

Environmental

Environmental reserves were $100 million for 2013. The Company is a party to various proceedings related to environmental issues, including administrative and judicial proceedings involving private parties and regulatory agencies. The Company has been identified as a potentially responsible party at approximately 244 environmentally impaired sites. Many of these are, or may be, subject to remedial action under the federal Comprehensive Environmental Response, Compensation and Liability Act of 1980, or CERCLA, also known as the Superfund Law, or similar state statutes.  Most of these proceedings arose from environmental conditions on properties used for ongoing or discontinued railroad operations.  A number of these proceedings, however, are based on allegations that the Company, or its predecessors, sent hazardous substances to facilities owned or operated by others for treatment, recycling or disposal.  In addition, some of the Company’s land holdings were leased to others for commercial or industrial uses that may have resulted in releases of hazardous substances or other regulated materials onto the property and could give rise to proceedings against the Company.

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CSX CORPORATION

PART II

Item 8. Financial Statements and Supplementary Data

NOTE 5.  Casualty, Environmental and Other Reserves, continued

In any such proceedings, the Company is subject to environmental clean-up and enforcement actions under the Superfund Law, as well as similar state laws that may impose joint and several liability for clean-up and enforcement costs on current and former owners and operators of a site without regard to fault or the legality of the original conduct.  These costs could be substantial.

In accordance with the Asset Retirement and Environmental Obligations Topic in the ASC, the Company reviews its role with respect to each site identified at least quarterly, giving consideration to a number of factors such as:

• type of clean-up required;

• nature of the Company’s alleged connection to the location (e.g., generator of waste sent to the site or owner or operator of the site);

• extent of the Company’s alleged connection (e.g., volume of waste sent to the location and other relevant factors); and

• number, connection and financial viability of other named and unnamed potentially responsible parties at the location.

Based on the review process, the Company has recorded amounts to cover contingent anticipated future environmental remediation costs with respect to each site to the extent such costs are estimable and probable.  The recorded liabilities for estimated future environmental costs are undiscounted.  The liability includes future costs for remediation and restoration of sites as well as any significant ongoing monitoring costs, but excludes any anticipated insurance recoveries.  Payments related to these liabilities are expected to be made over the next several years.  Environmental remediation costs are included in materials, supplies and other on the consolidated income statement.

Currently, the Company does not possess sufficient information to reasonably estimate the amounts of additional liabilities, if any, on some sites until completion of future environmental studies.  In addition, conditions that are currently unknown could, at any given location, result in additional exposure, the amount and materiality of which cannot presently be reasonably estimated.  Based upon information currently available, however, the Company believes its environmental reserves accurately reflect the cost of remedial actions currently required.

Other

Other reserves of $71 million for 2013 include liabilities for various claims, such as longshoremen disability claims, and claims for property, automobile and general liability.

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Item 8. Financial Statements and Supplementary Data

NOTE 6.  Properties

A detail of the Company’s net properties are as follows:

(Dollars in Millions)				Accumulated			Net Book		Annual Depreciation	Depreciation	Estimated Useful
December 2013		Cost		Depreciation			Value		Rate	Method	Life
Road
	Rail and Other Track Material	$	6,452	$	(1,270	)	$	5,182	2.9%	Group Life
	Ties	4,534		(947		)	3,587		4.0%	Group Life
	Grading	2,425		(448		)	1,977		1.5%	Group Life
	Ballast	2,612		(645		)	1,967		2.8%	Group Life
	Bridges, Trestles, and Culverts	2,008		(250		)	1,758		1.6%	Group Life
	Signals and Interlockers	1,922		(291		)	1,631		3.4%	Group Life
	Buildings	1,011		(355		)	656		2.5%	Group Life
	Other	3,654		(1,386		)	2,268		4.7%	Group Life
Total Road		24,618		(5,592		)	19,026				6-80 Years
Equipment
	Locomotive	4,987		(2,176		)	2,811		3.6%	Group Life
	Freight Cars	3,111		(1,135		)	1,976		3.1%	Group Life
	Work Equipment and Other	1,666		(914		)	752		7.1%	Group Life
Total Equipment		9,764		(4,225		)	5,539				5-38 Years
Land		1,842		—			1,842		N/A	N/A	N/A
Construction In Progress		854		—			854		N/A	N/A	N/A
Other		106		(76		)	30		N/A	Straight Line	4-30 Years
Total Properties		$	37,184	$	(9,893	)	$	27,291

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Item 8. Financial Statements and Supplementary Data

NOTE 6.  Properties, continued

(Dollars in Millions)				Accumulated			Net Book		Annual Depreciation	Depreciation	Estimated Useful
December 2012		Cost		Depreciation			Value		Rate	Method	Life
Road
	Rail and Other Track Material	$	6,177	$	(1,131	)	$	5,046	2.9%	Group Life
	Ties	4,287		(861		)	3,426		4.0%	Group Life
	Grading	2,407		(414		)	1,993		1.5%	Group Life
	Ballast	2,528		(624		)	1,904		2.8%	Group Life
	Bridges, Trestles, and Culverts	1,962		(224		)	1,738		1.6%	Group Life
	Signals and Interlockers	1,787		(302		)	1,485		3.4%	Group Life
	Buildings	926		(316		)	610		2.5%	Group Life
	Other	3,345		(1,281		)	2,064		4.7%	Group Life
Total Road		23,419		(5,153		)	18,266				6-80 Years
Equipment
	Locomotive	4,747		(2,079		)	2,668		3.6%	Group Life
	Freight Cars	3,088		(1,119		)	1,969		3.1%	Group Life
	Work Equipment and Other	1,466		(810		)	656		7.1%	Group Life
Total Equipment		9,301		(4,008		)	5,293				5-38 Years
Land		1,745		—			1,745		N/A	N/A	N/A
Construction In Progress		602		—			602		N/A	N/A	N/A
Other		212		(68		)	144		N/A	Straight Line	4-30 Years
Total Properties		$	35,279	$	(9,229	)	$	26,050

Railroad Assets

The Company depreciates its rail assets, including main-line track, locomotives and freight cars, using the group-life method of accounting.  Assets depreciated under the group-life method of accounting comprise over 86% of total fixed assets of $37 billion on a gross basis as of December 2013.  All other depreciable assets of the Company are depreciated on a straight-line basis. The group-life method aggregates assets with similar lives and characteristics into groups and depreciates each of these groups as a whole.  When using the group-life method, an underlying assumption is that each group of assets, as a whole, is used and depreciated to the end of its recoverable life.

The Company currently utilizes more than 130 different depreciable asset categories to account for depreciation expense for the railroad assets that are depreciated under the group-life method of accounting.  Examples of depreciable asset categories include 18 different categories for crossties due to the different combinations of density classifications and asset types.  By utilizing various depreciable categories, the Company can more accurately account for the use of its assets.  All assets of the Company are depreciated on a time or life basis.

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Item 8. Financial Statements and Supplementary Data

NOTE 6.  Properties, continued

The Company believes the group-life method of depreciation closely approximates the straight-line method of depreciation.  Additionally, due to the nature of most of its assets (e.g. track is one contiguous, connected asset) the Company believes that this is the most effective way to properly depreciate its assets.

Under the group-life method of accounting, the service lives and salvage values for each group of assets are determined by completing periodic depreciation studies and applying management’s assumptions regarding the service lives of its properties.  A depreciation study (also referred to as a life study) is the periodic review of asset service lives, salvage values, accumulated depreciation, and other related factors for group assets conducted by a third-party specialist, analyzed by the Company’s management and approved by the Surface Transportation Board (“STB”), the regulatory board that has broad jurisdiction over railroad practices.  The STB requires depreciation studies be performed for equipment assets every three years and for road (e.g. bridges and signals) and track (e.g. rail, ties and ballast) assets every six years.  The Company believes the frequency currently required by the STB provides adequate review of asset service lives and that a more frequent review would not result in a material change due to the long-lived nature of most of the assets.

The results of the depreciation study process determine the service lives for each asset group under the group-life method.  Road assets, including main-line track, have estimated service lives ranging from six years for system roadway machinery to 80 years for grading (construction of protection for the roadway, tracks and embankments).  Equipment assets, including locomotives and freight cars, have estimated service lives ranging from six years for technology assets to 38 years for work equipment.

Changes in asset service lives due to the results of the depreciation studies are applied on a prospective basis and could significantly impact future periods’ depreciation expense, and thus, the Company's results of operations.

There are several factors taken into account during the depreciation study and they include:

• statistical analysis of historical life and salvage data for each group of property;

• statistical analysis of historical retirements for each group of property;

• evaluation of current operations;

• evaluation of technological advances and maintenance schedules;

• previous assessment of the condition of the assets and outlook for their continued use;

• expected net salvage to be received upon retirement; and

• comparison of assets to the same asset groups with other companies.

For retirements or disposals of depreciable rail assets that occur in the ordinary course of business, the asset cost (net of salvage value or sales proceeds) is charged to accumulated depreciation and no gain or loss is recognized.  As individual assets within a specific group are retired or disposed of, resulting gains and losses are recorded in accumulated depreciation.  As part of the depreciation study, an assessment of the recorded amount of accumulated depreciation is made to determine if it is deficient (or in excess) of the appropriate amount indicated by the study. Any such deficiency (or excess), including any deferred gains or losses, is amortized as a component of depreciation expense over the remaining service life of the asset group until the next required depreciation study. Since the overall assumption with the group-life method of accounting is that the assets within the group on average have the same service life and characteristics, it is therefore concluded that the deferred gains and losses offset over time.

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NOTE 6.  Properties, continued

Since the rail network is one contiguous, connected network it is impractical to maintain specific identification records for these assets.  For road assets (such as rail and track related items), CSX utilizes a first-in, first-out approach to asset retirements.  The historical cost of these replaced assets is estimated using inflation indices published by the Bureau of Labor Statistics applied to the replacement value based on the age of the retired asset.  The indices are used because they closely correlate with the major cost of the materials comprising the applicable road assets.

Equipment assets (such as locomotives and freight cars) are specifically identified.  When an equipment asset is retired that has been depreciated using the group-life method, the cost is reduced from the cost base and recorded in accumulated depreciation.

In the event that large groups of assets are removed from service as a result of unusual acts or sales, resulting gains and losses are recognized immediately. These acts are not considered to be in the normal course of business and are therefore recognized when incurred.  Examples of such acts would be the major destruction of assets due to significant storm damage (e.g. major hurricanes), the sale of a rail line segment or the disposal of an entire class of assets (e.g. disposal of all refrigerated freight cars).  Abnormal operating gains were $65 million in 2013, $104 million in 2012 and $14 million in 2011 and all relate to the disposition of operating rail corridors. Each year includes gains from the 2011 sale of an operating rail corridor to the state of Florida. See the Significant Property Disposition section below for further details on the transaction with the state of Florida. In 2013, a gain was recognized for a non-monetary exchange of easements and rail assets, and in 2012, a gain was recognized for a sale of operating rail corridor to the Commonwealth of Massachusetts.

Recent experience with depreciation studies has resulted in depreciation rate changes, which did not materially affect the Company’s annual depreciation expense of $1.1 billion, $1.1 billion, and $976 million for 2013, 2012, and 2011, respectively.  In 2012, the Company completed a depreciation study for its equipment assets and a technical update (an update to the prior depreciation study) for its road and track assets.

Non-Railroad Assets

The majority of non-railroad property is depreciated using the straight-line method on a per asset basis.  The depreciable lives of this property are periodically reviewed by the Company and any changes are applied on a prospective basis.  Amortization expense recorded under capital leases is included in depreciation expense on the consolidated income statements.  For retirements or disposals of non-railroad depreciable assets and all dispositions of land, the resulting gains or losses are recognized in earnings at the time of disposal. During 2012, the Company recognized a gain of $57 million related to the sale of non-operating property, which is recognized in other income in the consolidated statements of income. These gains and losses were not material for any other period presented.

Impairment Review

Properties and other long-lived assets are reviewed for impairment whenever events or business conditions indicate the carrying amount of such assets may not be fully recoverable. Initial assessments of recoverability are based on estimates of undiscounted future net cash flows associated with an asset or a group of assets in accordance with the Property, Plant, and Equipment Topic in the ASC.  Where impairment is indicated, the assets are evaluated and their carrying amount is reduced to fair value based on discounted net cash flows or other estimates of fair value.

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NOTE 6.  Properties, continued

Capital Expenditures

The Company’s capital spending includes purchased or self-constructed assets and property additions that substantially extend the service life or increase the utility of those assets.  Indirect costs that can be specifically traced to capital projects are also capitalized.  The Company is committed to maintaining and improving its existing infrastructure and expanding its network for long-term growth.  Rail operations are capital intensive and CSX accounts for these costs in accordance with GAAP and the Company’s capitalization policy.  All properties are stated at historical cost less an allowance for accumulated depreciation.

The Company’s largest category of capital spending is the replacement of track assets and the acquisition or construction of new assets that enable CSX to enhance its operations or provide new capacity offerings to its customers.  These construction projects are typically completed by CSXT employees.  Costs for track asset replacement and capacity projects that are capitalized include:

• labor costs, because many of the assets are self-constructed;

• costs to purchase or construct new track or to prepare ground for the laying of track;

• welding (rail, field and plant) which are processes used to connect segments of rail;

• new ballast, which is gravel and crushed stone that holds track in line;

• fuels and lubricants associated with tie, rail and surfacing work which is the process of raising track to a designated elevation over an extended distance;

• cross, switch and bridge ties which are the braces that support the rails on a track;

• gauging which is the process of standardizing the distance between rails;

• handling costs associated with installing ties or ballast; and

• other track materials.

The primary cost in self-constructed track replacement work is labor.  CSXT engineering employees directly charge their labor to the track replacement project (the capitalized depreciable property). These employees concurrently perform deconstruction and installation of track material. Because of this concurrent process, CSX must estimate the amount of labor that is related to deconstruction versus installation.

Through analysis of CSXT’s track replacement process, CSX determined that approximately 20% of labor costs associated with track material installation is related to the deconstruction of old track and 80% is associated with the installation of new track.

Capital spending related to locomotives and freight cars comprises the second largest category of the Company’s capital assets.  This category includes purchase costs of locomotives and freight cars as well as certain equipment leases that are considered to be capital leases in accordance with the Leases Topic in the ASC.  In addition, costs to modify or rebuild these assets are capitalized if the spending incurred extends the asset’s service life or improves utilization.  Improvement projects must meet specified dollar thresholds to be capitalized and are reviewed by management to determine proper accounting treatment.

Routine repairs and maintenance costs, for all asset categories, are expensed as incurred.

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Item 8. Financial Statements and Supplementary Data

NOTE 6.  Properties, continued

Significant Property Disposition

In November 2011, the Company sold 61 miles of operating rail corridor to the Florida Department of Transportation. This corridor will be used by the state of Florida for its new commuter rail operation known as SunRail, which is expected to alleviate highway congestion. The Company diverted a portion of the corridor's existing rail traffic and relocated terminal operations to an adjacent rail corridor in Florida. As part of the transaction, the Company received $173 million in proceeds ($148 million in cash and a $25 million receivable, held in escrow and payable no later than April 2014) and up to $259 million in government grants. These grants are related to reimbursable capital expenditure projects in Florida and are recorded as a reduction of the carrying value of the related asset as received. This agreement also obligated the Company to invest a total of $500 million in routine capital expenditures and maintenance related to transportation capacity, facilities or equipment in Florida, including diversion and relocation costs related to this transaction within an eight year period following the transaction. The Company invested $142 million, $311 million and $47 million in 2013, 2012 and 2011, respectively. The required investment obligation was fulfilled during the second quarter of 2013.

This transaction contains multiple elements with separate accounting recognition for the sale of real estate and receipt of the grants. The proceeds related to the sale of real estate approximate fair value. Fair value was determined by management in accordance with the Fair Value Measurement Topic in the ASC using level 3 measurements and with the assistance of an independent third-party appraiser.

In accordance with the Real Estate Sales Topic in the ASC, this sale of real estate resulted in a deferred gain of $160 million. The deferred gain is primarily recognized into income ratably as the investment obligation is fulfilled. The Company recognized a gain of $43 million, $94 million and $14 million in 2013, 2012 and 2011, respectively. This gain is included in materials, supplies and other in the consolidated income statements. Going forward, the Company expects no further material gains. The deferred gain balance included in the consolidated balance sheets is in the table below.

	Deferred gain as of
(Dollars in Millions)	December 2013		December 2012
Current portion, included in Other Current Liabilities	$	9	$	43
Long term portion, included in Other Long-Term Liabilities	—		9
Total	$	9	$	52

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Item 8. Financial Statements and Supplementary Data

NOTE 7.  Commitments and Contingencies

Lease Commitments

The Company has various lease agreements with other parties with terms up to 30 years.  Non-cancelable, long-term leases may include provisions for maintenance, options to purchase, and options to extend the terms.  The Company uses the straight-line method to recognize rent expense associated with operating leases that include escalations over their terms. These amounts are shown in the table below.

	Fiscal Years
(Dollars in Millions)	2013		2012		2011
Rent Expense on Operating Leases	$	60	$	73	$	68

At December 2013, minimum rentals on land, buildings, track and equipment under operating leases are disclosed in the table below.  Also, payments to Conrail, Inc. ("Conrail") for leases on shared rail infrastructure are included in these amounts. (See Note 12, Related Party Transactions).

(Dollars in Millions)	Operating		Sublease			Net Lease
Years	Leases		Income			Commitments
2014	$	79	$	(3	)	$	76
2015	73		(2		)	71
2016	64		(2		)	62
2017	55		(2		)	53
2018	46		(2		)	44
Thereafter	275		(13		)	262
Total	$	592	$	(24	)	$	568

Purchase Commitments

CSXT has a commitment under a long-term maintenance program that currently covers 44% of CSXT’s fleet of locomotives.  The agreement is based on the maintenance cycle for each locomotive.  Under CSXT’s current obligations, the agreement will expire no earlier than 2031.  The costs expected to be incurred throughout the duration of the agreement fluctuate as locomotives are placed into or removed from service, or as required maintenance schedules are revised.  The table below includes both active and inactive locomotives covered under this agreement. 

The following table summarizes the number of locomotives covered and CSXT’s payments under the long-term maintenance program.

	Fiscal Years
(Dollars in Millions)	2013		2012		2011
Amounts Paid	$	287	$	287	$	281
Number of Locomotives	1,886		1,899		1,928

Annual payments related to the locomotive purchase obligations, including amounts that would be payable under the long-term maintenance program, are estimated in the table below. The amount of the ultimate purchase commitment depends upon the model of locomotive acquired and the timing of delivery. 

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NOTE 7.  Commitments and Contingencies, continued

     Additionally, the Company has various other commitments to purchase technology, communications, railcar maintenance and other services from various suppliers.  Total annual payments under all of these purchase commitments are also estimated in the table below.

(Dollars in Millions)	Locomotive & Maintenance Payments		Other Commitments		Total
2014	$	292	$	321	$	613
2015	253		66		319
2016	245		15		260
2017	232		6		238
2018	220		6		226
Thereafter	1,314		53		1,367
Total	$	2,556	$	467	$	3,023

Insurance

The Company maintains numerous insurance programs with substantial limits for property damage (which includes business interruption) and third-party liability.  A certain amount of risk is retained by the Company on each of the property and liability programs.  The Company has a $25 million retention per occurrence for the non-catastrophic property program (such as a derailment) and a $50 million retention per occurrence for the liability and catastrophic property programs (such as hurricanes and floods).

While the Company believes its insurance coverage is adequate, future claims could exceed existing insurance coverage or insurance may not continue to be available at commercially reasonable rates. 

Legal

The Company is involved in litigation incidental to its business and is a party to a number of legal actions and claims, various governmental proceedings and private civil lawsuits, including, but not limited to, those related to fuel surcharge practices, environmental and hazardous material exposure matters, FELA claims by employees, other personal injury or property claims and disputes and complaints involving certain transportation rates and charges. Some of the legal proceedings include claims for compensatory as well as punitive damages and others are, or are purported to be, class actions. While the final outcome of these matters cannot be predicted with certainty, considering, among other things, the legal defenses available and liabilities that have been recorded along with applicable insurance, it is currently the opinion of CSX management that none of these pending items will have a material adverse effect on the Company's financial condition, results of operations or liquidity. An unexpected adverse resolution of one or more of these items, however, could have a material adverse effect on the Company's financial condition, results of operations or liquidity in that particular period.

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NOTE 7.  Commitments and Contingencies, continued

The Company is able to estimate a range of possible loss for certain legal proceedings for which a loss is reasonably possible in excess of reserves established. The Company has estimated this range to be $2 million to $15 million in aggregate at December 27, 2013. This estimated aggregate range is based upon currently available information and is subject to significant judgment and a variety of assumptions. Accordingly, the Company's estimate will change from time to time, and actual losses may vary significantly from the current estimate.

Fuel Surcharge Antitrust Litigation

In May 2007, class action lawsuits were filed against CSXT and three other U.S.-based Class I railroads alleging that the defendants' fuel surcharge practices relating to contract and unregulated traffic resulted from an illegal conspiracy in violation of antitrust laws. In November 2007, the class action lawsuits were consolidated and are now pending in federal court in the District of Columbia. The suit seeks treble damages allegedly sustained by purported class members as well as attorneys' fees and other relief. Plaintiffs are expected to allege damages at least equal to the fuel surcharges at issue.

In June 2012, the District Court certified the case as a class action. The decision was not a ruling on the merits of plaintiffs' claims, rather a decision to allow the plaintiffs to seek to prove the case as a class. The defendant railroads petitioned the U.S. Court of Appeals for the D.C. Circuit for permission to appeal the District Court's class certification decision. In August 2013, the D.C. Circuit issued a decision vacating the class certification decision and remanded the case to the District Court to reconsider its class certification decision. In October, 2013, the District Court held a case management conference to determine the scope and schedule of the remand proceedings. The District Court has ordered briefing on class certification to be completed by the end of May 2014.  In the interim, the District Court has delayed proceedings on the merits of the case.

CSXT believes that its fuel surcharge practices were arrived at and applied lawfully and that the case is without merit. Accordingly, the Company intends to defend itself vigorously. However, penalties for violating antitrust laws can be severe, and an unexpected adverse decision on the merits could have a material adverse effect on the Company's financial condition, results of operations or liquidity in that particular period or for the full year.

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Item 8. Financial Statements and Supplementary Data

NOTE 7.  Commitments and Contingencies, continued

Environmental

CSXT has certain indemnification requirements with respect to Pharmacia LLC (formerly known as Monsanto Company) for certain liabilities associated with real estate formerly owned by Pharmacia that is now owned by CSXT in Kearny, New Jersey (the “Property”).  The indemnification and defense duties arise with respect to several matters.  The State of New Jersey filed suit in 2005 against Occidental Chemical Corporation, Tierra Solutions Inc., Maxus Energy Corporation and five other companies seeking cleanup and removal costs and other damages associated with the presence of dioxin and other hazardous substances in the sediment of the Newark Bay Complex, which includes a 17-mile stretch of the Passaic River near the Property. In 2009, Pharmacia, along with hundreds of other companies, was served with a third-party complaint by Tierra Solutions Inc. and Maxus Energy Corporation seeking contribution towards the costs and damages claimed by the state of New Jersey or incurred by Tierra and Maxus related to the Newark Bay Complex.  CSXT has been participating in the defense of this matter with and on behalf of Pharmacia.  In 2013, Pharmacia, along with most of the other third-party defendants, entered into a settlement agreement with the state of New Jersey for an amount that is not material to CSXT.  The settlement, approved by the Superior Court of New Jersey in December 2013, resolves certain claims or potential claims by the state of New Jersey for costs and damages arising from discharges to the Newark Bay Complex.  CSXT, on behalf of Pharmacia, is also conducting a Remedial Investigation and Feasibility Study of the 17-mile Lower Passaic River Study Area with approximately 70 other parties pursuant to an Administrative Order on Consent with the EPA. The Company does not believe any remediation costs potentially allocable to CSXT would be material to the Company's financial condition, results of operations or liquidity.

NOTE 8. Employee Benefit Plans

The Company sponsors defined benefit pension plans principally for salaried, management personnel.  For employees hired on or before December 31, 2002, the plans provide eligible employees with retirement benefits based predominantly on years of service and compensation rates near retirement.  For employees hired in 2003 or thereafter, benefits are determined based on a cash balance formula, which provides benefits by utilizing interest and pay credits based upon age, service and compensation. In addition to these plans, the Company sponsors a self-insured, post-retirement medical plan and a life insurance plan that provide benefits to full-time, salaried, management employees, hired prior to January 1, 2003, upon their retirement if certain eligibility requirements are met.  Prior to 2011, the post-retirement medical plan was partially funded by all participating retirees, with retiree contributions adjusted annually.  Beginning in 2011, Medicare-eligible retirees are covered by a health reimbursement arrangement, which is an employer-funded account that can be used for reimbursement of eligible medical expenses. Non-Medicare eligible retirees are covered by a self-insured program. The life insurance plan is non-contributory.

The Company engages independent, external actuaries to compute the amounts of liabilities and expenses related to these plans subject to the assumptions that the Company selects. In order to perform this valuation, the actuaries are provided with the details of the population covered at the beginning of the year, summarized in the table below, and projects that population forward to the end of the year.

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NOTE 8. Employee Benefit Plans, continued

	Summary of Participants as of
	January 1, 2013
	Pension Plans	Post-retirement Medical Plan
Active Employees	5,153	2,176
Retirees and Beneficiaries	11,569	12,277
Other(a)	5,715	112
Total	22,437	14,565

(a) For pension plans, the other category consists mostly of terminated but vested former employees.  For post-retirement plans, the other category consists of employees on long-term disability that have not yet retired.

The benefit obligation for these plans represents the liability of the Company for current and retired employees and is affected primarily by the following:

• service cost (benefits attributed to employee service during the period);

• interest cost (interest on the liability due to the passage of time);

• actuarial gains/losses (experience during the year different from that assumed and changes in plan assumptions); and

• benefits paid to participants.

Cash Flows

Plan assets are amounts that have been segregated and restricted to provide qualified pension plan benefits and include amounts contributed by the Company and amounts earned from invested contributions, net of benefits paid. Qualified pension plan obligations are funded in accordance with prescribed regulatory requirements and with an objective of meeting minimum funding requirements necessary to avoid restrictions on flexibility of plan operation and benefit payments.  During 2012, the Company made a contribution of $275 million to its qualified pension plans, of which $25 million was the required minimum contribution. At this time, the Company anticipates that no further contributions to its qualified pension plans will be required in 2014. The Company funds the cost of the post-retirement medical and life insurance benefits as well as nonqualified pension benefits on a pay-as-you go basis.

Future expected benefit payments are as follows:

	Expected Cash Flows
(Dollars in Millions)	Pension Benefits		Post-retirement Benefits
2014	$	167	$	38
2015	171		36
2016	173		34
2017	176		32
2018	179		31
2019-2023	910		126
Total	$	1,776	$	297

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NOTE 8. Employee Benefit Plans, continued

Plan Assets

The CSX Investment Committee (the “Investment Committee”), whose members were selected by the Chief Financial Officer and approved by the Chief Executive Officer, is responsible for oversight and investment of plan assets.  The Investment Committee utilizes an investment asset allocation strategy that is monitored on an ongoing basis and that is updated periodically in consideration of plan or employee changes, or changing market conditions. These studies provide an extensive modeling of asset investment return in conjunction with projected plan liabilities and seek to evaluate how to maximize return within the constraints of acceptable risk. The current asset allocation targets 60% equity investments and 40% fixed income investments and cash.  Within equity, a further target is currently established for 40% of total plan assets in domestic equity and 20% in international equity.  Allocations are evaluated for levels within 3% of targeted allocations and are adjusted quarterly as necessary. 

The distribution of pension plan assets as of the measurement date is shown in the table below, and these assets are netted against the pension liabilities on the balance sheet.

	December 2013				December 2012
			Percent of				Percent of
(Dollars in Millions)	Amount		Total Assets		Amount		Total Assets
Equity	$	1,619	65	%	$	1,408	61	%
Fixed Income	795		32		829		36
Cash and Cash Equivalents	86		3		57		3
Total	$	2,500	100	%	$	2,294	100	%

Under the supervision of the Investment Committee, individual investments or fund managers are selected in accordance with standards of prudence applicable to asset diversification and investment suitability.  The Company also selects fund managers with differing investment styles and benchmarks their investment returns against appropriate indices.  Fund investment performance is continuously monitored.  Acceptable performance is determined in the context of the long-term return objectives of the fund and appropriate asset class benchmarks.

Within the Company's equity funds, the U.S. stock segment includes diversification among large and small capitalization stocks.  Guidelines established with individual managers limit investment by industry sectors, individual stock issuer concentration and the use of derivatives and CSX securities.

Fixed income securities guidelines established with individual managers specify the types of allowable investments, such as government, corporate and asset-backed bonds, and limit diversification between domestic and foreign investments and the use of derivatives.  Additionally, guidelines stipulate minimum credit quality constraints and any prohibited securities.

For detailed information regarding the fair value of pension assets, see Note 13, Fair Value Measurements.

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NOTE 8. Employee Benefit Plans, continued

Benefit Obligation, Plan Assets and Funded Status

Changes in benefit obligation and the fair value of plan assets for the 2013 and 2012 calendar plan years are as follows:

	Pension Benefits						Post-retirement Benefits
	Plan Year			Plan Year			Plan Year			Plan Year
(Dollars in Millions)	2013			2012			2013			2012
Actuarial Present Value of Benefit Obligation
Accumulated Benefit Obligation	$	2,538		$	2,806		N/A			N/A
Projected Benefit Obligation	2,679			2,954			$	350		$	415
Change in Projected Benefit Obligation:
Projected Benefit Obligation atBeginning of Plan Year	$	2,954		$	2,668		$	415		$	388
Service Cost	49			44			3			4
Interest Cost	108			123			13			16
Plan Participants' Contributions	—			—			8			8
Plan Amendments	—			—			—			(1		)
Actuarial (Gain) Loss	(275		)	274			(49		)	43
Benefits Paid	(157		)	(155		)	(40		)	(43		)
Benefit Obligation at End of Plan Year	$	2,679		$	2,954		$	350		$	415
Change in Plan Assets:
Fair Value of Plan Assets at Beginning of Plan Year	$	2,294		$	1,850		$	—		$	—
Actual Return on Plan Assets	350			311			—			—
Qualified Employer Contributions	—			275			—			—
Non-qualified Employer Contributions	13			13			32			35
Plan Participants' Contributions	—			—			8			8
Benefits Paid	(157		)	(155		)	(40		)	(43		)
Fair Value of Plan Assets at End of Plan Year	2,500			2,294			—			—
Funded Status at End of Plan Year	$	(179	)	$	(660	)	$	(350	)	$	(415	)

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NOTE 8. Employee Benefit Plans, continued

For qualified plan funding purposes, assets and discounted liabilities are measured in accordance with ERISA, as well as other related provisions of the Internal Revenue Code and related regulations.  Under these funding provisions and the alternative measurements available thereunder, the Company estimates its unfunded obligation for qualified plans on an annual basis.

In accordance with Compensation-Retirement Benefits Topic in the ASC, an employer must recognize the funded status of a pension or other post-retirement benefit plan by recording a liability (underfunded plan) or asset (overfunded plan) for the difference between the projected benefit obligation (or the accumulated post-retirement benefit obligation for a postretirement benefit plan) and the fair value of plan assets at the plan measurement date.  Amounts related to pension and post-retirement benefits recorded in other long-term assets, labor and fringe benefits payable and other long-term liabilities on the balance sheet are as follows:

	Pension Benefits						Post-retirement Benefits
	December			December			December			December
(Dollars in Millions)	2013			2012			2013			2012
Amounts Recorded in Consolidated
Balance Sheets:
Long-term Assets (a)	$	44		$	3		$	—		$	—
Current Liabilities	(14		)	(15		)	(38		)	(41		)
Long-term Liabilities	(209		)	(648		)	(312		)	(374		)
Net Amount Recognized in
Consolidated Balance Sheet	$	(179	)	$	(660	)	$	(350	)	$	(415	)

(a) Long-term assets relate to two of the qualified pension plans whose assets exceed projected benefit obligations.

The funded status, or amount by which the benefit obligation exceeds the fair value of plan assets, represents a liability. At December 2013, the status of CSX plans only with a net liability is disclosed below. The total fair value of all plans as of December 2013 was $2.5 billion, which includes the qualified pension plans with net assets.

	Aggregate		Aggregate
(Dollars in Millions)	Fair Value		Projected
Benefit Obligations in Excess of Plan Assets	of Plan Assets		Benefit Obligation
Projected Benefit Obligation	$	69	$	(292	)
Accumulated Benefit Obligation	69		(280		)

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NOTE 8. Employee Benefit Plans, continued

Net Benefit Expense

The following table describes the components of expense/(income) related to net benefit expense recorded in labor and fringe on the income statement.

	Pension Benefits Fiscal Years									Post-retirement Benefits Fiscal Years
(Dollars in Millions)	2013			2012			2011			2013			2012			2011
Service Cost	$	49		$	44		$	40		$	3		$	4		$	2
Interest Cost	108			123			121			13			16			11
Expected Return on Plan Assets	(162		)	(166		)	(157		)	—			—			—
Amortization of Net Loss	100			82			71			14			9			7
Amortization of Prior Service Cost	—			—			—			(1		)	(1		)	(1		)
Net Periodic Benefit Expense	95			83			75			29			28			19
Settlement Gain(a)	(2		)	(2		)	(2		)	—			—			—
Total Expense	$	93		$	81		$	73		$	29		$	28		$	19

(a) Settlement gains were recognized as one of the pension plan's lump-sum payments exceeded the sum of the service cost and interest cost recognized.  The gain is the recognition of a portion of its accumulated other comprehensive income related to that plan.

Pension and Other Post-Employment Benefits Adjustments

The following table shows the pre-tax change in other comprehensive loss (income) attributable to the components of net expense and the change in benefit obligation for CSX for pension and other post-employment benefits.

(Dollars in Millions)	Pension Benefits						Post-retirement Benefits
Components of Other Comprehensive	December			December			December			December
Loss (Income)	2013			2012			2013			2012
Recognized in the balance sheet
(Gains) Losses	$	(462	)	$	130		$	(48	)	$	43
Prior service credits	—			—			—			(1		)
Expense (Income) recognized in the income statement
Amortization of net losses (a)	$	100		$	82		$	14		$	9
Settlement gain	(2		)	(2		)	—			—
Amortization of prior service costs (b)	—			—			(1		)	(1		)

(a) Amortization of net losses estimated to be expensed for 2014 is $57 million and $6 million for pension benefits and post-retirement benefits, respectively. The decrease in amortization is largely related to the impact of increasing discount rates.

(b) Amortization of prior service costs estimated to be expensed in 2014 are less than $1 million for pension benefits. The estimated post-retirement benefits amount to be credited to expense for 2014 is $1 million.

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NOTE 8. Employee Benefit Plans, continued

As of December 2013, the balances of pre-tax amounts to be amortized that are included in accumulated other comprehensive loss (a component of shareholders’ equity) are as follows:

	Pension Benefits		Post-retirement Benefits
Losses	$	658	$	73
Prior Service Costs (Credits)	1		(3		)
Total	$	659	$	70

Assumptions

The expected long-term average rate of return on plan assets reflects the average rate of earnings expected on the funds invested, or to be invested, to provide for benefits included in the projected benefit obligation. In estimating that rate, the Company gives appropriate consideration to the returns being earned by the plan assets in the funds and the rates of return expected to be available for reinvestment as well as the current and projected asset mix of the funds.  Management balances market expectations obtained from various investment managers and economists with both market and actual plan historical returns to develop a reasonable estimate of the expected long-term rate of return on assets.  As this assumption is long-term, it is adjusted less frequently than other assumptions used in pension accounting. 

Weighted-average assumptions used in accounting for the plans were as follows:

	Pension Benefits				Post-retirement Benefits
	2013		2012		2013		2012
Expected Long-term Return on Plan Assets:
Benefit Cost for Plan Year	7.75	%	8.00	%	N/A		N/A
Benefit Obligation at End of Plan Year	7.50	%	7.75	%	N/A		N/A
Discount Rates:
Benefit Cost for Plan Year	3.75	%	4.75	%	3.20	%	4.25	%
Benefit Obligation at End of Plan Year	4.75	%	3.75	%	4.25	%	3.20	%
Salary Scale Inflation	3.75	%	3.75	%	N/A		N/A

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NOTE 8. Employee Benefit Plans, continued

The net post-retirement benefit obligation for salaried, management personnel was determined using the following assumptions for the health care cost trend rate for medical plans. While it is expected that rates will decrease to 5% by 2020 for Medicare and 2021 for Non-Medicare eligible individuals, there may be yearly fluctuations. Additionally, there are cost differentials between Medicare and Non-Medicare eligible individuals which are reflected below.

	Post-retirement Benefits
	2013	2012
Health Care Cost Trend Rate:
Components of Benefit Cost:  Non-Medicare Eligible	8.5%	8.5%
Components of Benefit Cost:  Medicare Eligible	8.0%	8.0%
Benefit Obligations:  Non-Medicare Eligible	8.0%	8.5%
Benefit Obligations:  Medicare Eligible	7.5%	8.0%

For every 1% change in the assumed health care cost trend rate, service and interest cost will change by less than $1 million on a pre-tax basis on the consolidated income statements. For every 1% change in the health care cost trend rate, the Company’s benefit obligation will change by less than $1 million on the consolidated balance sheets.

Other Plans

Under collective bargaining agreements, the Company participates in a multi-employer benefit plan, which provides certain post-retirement health care and life insurance benefits to eligible contract employees. Premiums under this plan are expensed as incurred and amounted to $41 million, $46 million and $48 million in 2013, 2012 and 2011, respectively.

The Company maintains savings plans for virtually all full-time salaried employees and certain employees covered by collective bargaining agreements.  Expense associated with these plans was $37 million, $29 million and $28 million for 2013, 2012 and 2011, respectively.

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NOTE 9.  Debt and Credit Agreements

Debt was as follows:

	Maturity at December	Average Interest Rates at December	December			December
(Dollars in Millions)	2013	2013	2013			2012
Notes	2014-2044	5.7%	$	8,935		$	9,151
Equipment Obligations(a)	2014-2023	7.3%	602			667
Capital Leases	2014-2026	8.1%	16			12
Convertible Debentures	2021	1.0%	2			2
Subtotal Long-term Debt (including current portion)			$	9,555		$	9,832
Less Debt Due within One Year			(533		)	(780		)
Long-term Debt (excluding current portion)			$	9,022		$	9,052

(a) These obligations are secured by an interest in certain railroad equipment.

For information regarding the fair value of debt, see Note 13, Fair Value Measurements.

Debt Issuance

During 2013, CSX issued $500 million of 3.7% notes due 2023. These notes are included in the consolidated balance sheets under long-term debt and may be redeemed by the Company at any time. The net proceeds were used for general corporate purposes, which may include repayment of indebtedness (including CSX’s 5.30% notes that mature on February 15, 2014) outstanding from time to time, repurchases of CSX’s common stock, capital investment, working capital requirements, improvements in productivity and other cost reductions at CSX’s major transportation units.

Long-term Debt Maturities

(Dollars in Millions)	Maturities as of
Fiscal Years Ending	December 2013
2014	$	533
2015	629
2016	22
2017	631
2018	619
Thereafter	7,121
Total Long-term Debt Maturities (including current portion)	$	9,555

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NOTE 9.  Debt and Credit Agreements, continued

Credit Facilities

CSX has a $1 billion unsecured, revolving credit facility backed by a diverse syndicate of banks. This facility expires in September 2016, and as of the date of this filing, the Company has no outstanding balances under this facility. The facility allows borrowings at floating (LIBOR-based) interest rates, plus a spread, depending upon CSX's senior unsecured debt ratings. LIBOR is the London Interbank Offered Rate which is a daily reference rate based on the interest rates at which banks offer to lend unsecured funds.

Commitment fees and interest rates payable under the facility were similar to fees and rates available to comparably rated investment-grade borrowers. At December 2013, CSX was in compliance with all covenant requirements under the facilities.

Receivables Securitization Facility

The Company's $250 million receivables securitization facility has a 364-day term and expires in December 2014. The purpose of this facility is to provide an alternative to commercial paper and a low cost source of short-term liquidity. The Company anticipates either renewing the facility or replacing it with another liquidity-based solution. Under the terms of this facility, CSX Transportation transfers eligible third-party receivables to CSX Trade Receivables, LLC ("CSX Trade Receivables"), a bankruptcy-remote special purpose subsidiary. A separate subsidiary of CSX services the receivables. Upon transfer, the receivables become assets of CSX Trade Receivables and are not available to the creditors of CSX or any of its other subsidiaries. In the event CSX Trade Receivables draws under this facility, the Company will record an equivalent amount of debt on its consolidated financial statements. As of the date of this filing, the Company has no outstanding balances under this facility.

NOTE 10.  Other Income - Net

The Company derives income from items that are not considered operating activities.  Income from these items is reported net of related expense. Income from real estate operations includes the results of the Company’s non-operating real estate sales, leasing, acquisition and management and development activities and may fluctuate as a function of timing of real estate sales. Miscellaneous income (expense) includes equity earnings or losses, investment gains and losses and other non-operating activities and may fluctuate due to timing.  Other income – net consisted of the following:

	Fiscal Years
(Dollars in Millions)	2013			2012			2011
Interest Income	$	8		$	5		$	5
Income from Real Estate Operations	23			81			25
Miscellaneous Expense	(20		)	(13		)	(8		)
Total Other Income - Net	$	11		$	73		$	22
Gross Revenue from Real Estate
Operations included above	$	48		$	106		$	51

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NOTE 11.  Income Taxes

Earnings before income taxes of $2.9 billion, $3.0 billion and $2.9 billion for fiscal years 2013, 2012 and 2011, respectively, represent earnings from domestic operations.

The breakdown of income tax expense between current and deferred is as follows:

	Fiscal Years
(Dollars in Millions)	2013		2012 (a)		2011 (a)
Current:
Federal	$	671	$	450	$	370
State	87		66		107
Subtotal Current	758		516		477
Deferred:
Federal	285		530		614
State	15		62		(5		)
Subtotal Deferred	300		592		609
Total	$	1,058	$	1,108	$	1,086

(a) See the revision of prior period financial statements in Note 1. Nature of Operations and Significant Accounting Policies.

Income tax expense reconciled to the tax computed at statutory rates is presented in the table below.  The Company recorded a tax benefit of $42 million, $20 million and $14 millionin 2013, 2012 and 2011, respectively, primarily as a result of federal and state legislative changes as well as the resolution of other federal and state tax matters. Each year's benefit is included in the state income tax and other lines in the table below.

	Fiscal Years
(Dollars In Millions)	2013					2012 (a)					2011 (a)
Federal Income Taxes	$	1,023		35.0	%	$	1,040		35.0	%	$	1,029		34.9	%
State Income Taxes	65			2.2	%	81			2.8	%	65			2.2	%
Other	(30		)	(1.0	)%	(13		)	(0.4	)%	(8		)	(0.3	)%
Income Tax Expense/Rate	$	1,058		36.2	%	$	1,108		37.4	%	$	1,086		36.8	%

(a) See the revision of prior period financial statements in Note 1. Nature of Operations and Significant Accounting Policies.

In September 2013, the Internal Revenue Service issued final regulations governing the income tax treatment of the acquisition, disposition and repair of tangible property. The regulations are effective beginning in 2014. The Company does not expect these new regulations to have a material impact on the financial statements.

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NOTE 11. Income Taxes, continued

The significant components of deferred income tax assets and liabilities include:

	2013				2012
(Dollars in Millions)	Assets		Liabilities		Assets		Liabilities
Pension Plans	$	67	$	—	$	249	$	—
Other Employee Benefit Plans	299		—		292		—
Accelerated Depreciation	—		8,868		—		8,544
Other	257		262		278		252
Total	$	623	$	9,130	$	819	$	8,796
Net Deferred Income Tax Liabilities			$	8,507			$	7,977

The primary factors in the change in year-end net deferred income tax liability balances include:

• Annual provision for deferred income tax expense; and

• Accumulated other comprehensive loss.

The Company files a consolidated federal income tax return, which includes its principal domestic subsidiaries. Income tax incurred on the operations of CSX and its subsidiaries are subject to U.S. federal income tax as well as income tax of multiple state jurisdictions.  CSX participated in a contemporaneous Internal Revenue Service (“IRS”) audit of tax year 2013.  Federal examinations of original federal income tax returns for all years through 2011 are resolved.

As of December 2013, 2012 and 2011, the Company had approximately $23 million, $24 million and $22 million, respectively, of total net unrecognized tax benefits.  After consideration of the impact of federal tax benefits, $15 million, $17 million and $15 million in 2013, 2012 and 2011, respectively, could favorably affect the effective income tax rate in each year.  The Company estimates that approximately $3 million of the unrecognized tax benefits as of December 2013 for various state and federal income tax matters will be resolved over the next 12 months upon the expiration of statutes of limitations.  The final outcome of these uncertain tax positions, however, is not yet determinable. The change to the total gross unrecognized tax benefits and prior year audit resolutions of the Company during the fiscal year ended December 2013 is reconciled as follows:

Uncertain Tax Positions:	Fiscal Year
(Dollars in Millions)	2013			2012			2011
Balance at beginning of the year	$	24		$	22		$	20
Additions based on tax positions related to current year	2			6			1
Additions based on tax positions related to prior years	5			3			10
Reductions based on tax positions related to prior years	(6		)	(1		)	(3		)
Settlements with taxing authorities	—			—			(5		)
Lapse of statute of limitations	(2		)	(6		)	(1		)
Balance at end of the year	$	23		$	24		$	22

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NOTE 11. Income Taxes, continued

CSX’s continuing practice is to recognize net interest and penalties related to income tax matters in income tax expense.  Included in the consolidated income statements are benefits of $1 million and $8 million in 2013 and 2012, respectively, and expense of $1 million in 2011 for changes to reserves for interest and penalties for all prior year tax positions.  The current year benefit for interest and penalties is due to favorable tax settlements of prior period tax audits where the Company had previously accrued a liability for interest and penalties.  The Company had $2 million, $3 million and $11 million accrued for interest and penalties at 2013, 2012 and 2011, respectively, for all prior year tax positions.

NOTE 12.  Related Party Transactions

Through a limited liability company, CSX and Norfolk Southern Corporation (“NS”) jointly own Conrail, Inc. CSX has a 42% economic interest and 50% voting interest in the jointly-owned entity, and NS has the remainder of the economic and voting interests.  Pursuant to the Investments-Equity Method and Joint Venture Topic in the ASC, CSX applies the equity method of accounting to its investment in Conrail.

Conrail owns rail infrastructure and operates for the joint benefit of CSX and NS.  This is known as the shared asset area. Conrail charges fees for right-of-way usage, equipment rentals and transportation, switching and terminal service charges in the shared asset area.   These expenses are included in materials, supplies and other on the consolidated income statements. Future minimum lease payments due to Conrail under the shared asset area agreements are as follows:

(Dollars in Millions)	Conrail Shared
Years	Asset Agreement
2014	$	25
2015	25
2016	25
2017	25
2018	25
Thereafter	144
Total	$	269

Also, included in materials, supplies and other are CSX’s 42% share of Conrail’s income and its amortization of the fair value write-up arising from the acquisition of Conrail and certain other adjustments.  The amortization primarily represents the additional after-tax depreciation expense related to the write-up of Conrail’s fixed assets when the original purchase price, from the 1997 acquisition of Conrail, was allocated based on fair value. This write-up of fixed assets resulted in a difference between CSX's investment in Conrail and its share of Conrail's underlying net equity, which is $362 million as of December 2013.

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NOTE 12.  Related Party Transactions,continued

The following table details the related Conrail amounts included in materials, supplies and other in the Company’s consolidated income statements:

	Fiscal Years
(Dollars in Millions)	2013			2012			2011
Rents, Fees and Services	$	115		$	139		$	111
Purchase Price Amortization and Other	4			4			4
Equity in Income of Conrail	(35		)	(26		)	(24		)
Total Conrail Rents, Fees and Services	$	84		$	117		$	91

As required by the Related Party Disclosures Topic in the ASC, the Company has identified amounts below owed to Conrail, or its subsidiaries, representing liabilities under the operating, equipment and shared area agreements with Conrail.  The Company also executed two promissory notes with a subsidiary of Conrail which were included in long-term debt on the consolidated balance sheets.

	December		December
(Dollars in Millions)	2013		2012
Balance Sheet Information:
CSX Payable to Conrail (a)	$	172	$	175
Promissory Notes Payable to Conrail Subsidiary (b)
4.40% CSX Promissory Note due October 2035	73		73
4.52% CSXT Promissory Note due March 2035	23		23

(a) CSX Payable to Conrail is included on the consolidated balance sheet of CSX as accounts payable because it is short term in nature.

(b) Promissory notes payable to Conrail are included on the consolidated balance sheet of CSX as long-term debt.

Interest expense from the promissory notes payable to a Conrail subsidiary was $4 million for 2013, 2012 and 2011, respectively.

NOTE 13.  Fair Value Measurements

The Financial Instruments Topic in the ASC requires disclosures about fair value of financial instruments in annual reports as well as in quarterly reports.  For CSX, this statement applies to certain investments, pension plan assets and long-term debt.  Also, the Fair Value Measurements and Disclosures Topic in the ASC clarifies the definition of fair value for financial reporting, establishes a framework for measuring fair value and requires additional disclosures about the use of fair value measurements.   

Various inputs are considered when determining the value of the Company's investments, pension plan assets and long-term debt.  The inputs or methodologies used for valuing securities are not necessarily an indication of the risk associated with investing in these securities.  These inputs are summarized in the three broad levels listed below.

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NOTE 13.  Fair Value Measurements, continued

• Level 1 – observable market inputs that are unadjusted quoted prices for identical assets or liabilities in active markets

• Level 2 – other significant observable inputs (including quoted prices for similar securities, interest rates, credit risk, etc.)

• Level 3 – significant unobservable inputs (including the Company’s own assumptions in determining the fair value of investments)

The valuation methods described below may produce a fair value calculation that may not be indicative of net realizable value or reflective of future fair values. Furthermore, while the Company believes its valuation methods are appropriate and consistent with other market participants, the use of different methodologies or assumptions to determine the fair value of certain financial instruments could result in a different fair value measurement at the reporting date.

Investments

The Company's investment assets, valued with assistance from a third-party trustee, consist of certificates of deposits, commercial paper, corporate bonds, government securities and auction rate securities and are carried at fair value on the consolidated balance sheet per the Fair Value Measurements and Disclosures Topic in the ASC. There are several valuation methodologies used for those assets as described below.

• Certificates of Deposit and Commercial Paper (Level 2): Valued by discounting the related cash flows based on current yields of similar instruments with comparable durations.

• Corporate Bonds and Government Securities (Level 2): Valued using price evaluations reflecting the bid and/or ask sides of the market for a similar investment as of the last day of the period.

• Auction Rate Securities (Level 3): Valued using a discounted cash flow model, because there is currently no active market for trading.

The Company's investment assets are carried at fair value on the consolidated balance sheets as summarized in the table below. Additionally, the amortized cost basis of investments was $668 million and $742 million as of December 27, 2013 and December 28, 2012, respectively.

	Fiscal Years
	2013								2012
(Dollars in Millions)	Level 1		Level 2		Level 3		Total		Level 1		Level 2		Level 3		Total
Certificates of Deposit and Commercial Paper	$	—	$	472	$	—	$	472	$	—	$	555	$	—	$	555
Corporate Bonds	—		132		—		132		—		142		—		142
Government Securities	—		49		—		49		—		31		—		31
Auction Rate Securities	—		—		15		15		—		—		15		15
Total investments at fair value	$	—	$	653	$	15	$	668	$	—	$	728	$	15	$	743

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NOTE 13.  Fair Value Measurements, continued

These investments have the following maturities:

(Dollars in Millions)	December 2013		December 2012
Less than 1 year	$	487	$	587
1 - 2 years	58		61
2 - 5 years	105		76
Greater than 5 years	18		19
Total investments at fair value	$	668	$	743

Long-term Debt

Long-term debt is reported at carrying amount on the consolidated balance sheet and is the Company's only financial instrument with fair values significantly different from their carrying amounts.  The majority of the Company's long-term debt is valued with assistance from an independent third party.  For those instruments not valued by the third party, the fair value has been estimated by applying market rates of similar instruments to the scheduled contractual debt payments and maturities. These market rates are provided by the same third party.  All of the inputs used to determine the fair value of the Company's long-term debt are Level 2 inputs.

The fair value of outstanding debt fluctuates with changes in a number of factors.  Such factors include, but are not limited to, interest rates, market conditions, values of similar financial instruments, size of the transaction, cash flow projections and comparable trades.  Fair value will exceed carrying value when the current market interest rate is lower than the interest rate at which the debt was originally issued.  The fair value of a company's debt is a measure of its current value under present market conditions.  It does not impact the financial statements under current accounting rules.  The fair value and carrying value of the Company's long-term debt is as follows:

(Dollars in Millions)	December 2013		December 2012
Long-term Debt (Including Current Maturities):
Fair Value	$	10,354	$	11,562
Carrying Value	9,555		9,832

Pension Plan Assets

Pension plan assets are reported at fair value on the consolidated balance sheet. The Investment Committee targets an allocation of pension assets to be generally 60% equity and 40% fixed income.  There are several valuation methodologies used for those assets as described below.

• Common stock (Level 1): Valued at the closing price reported on the active market on which the individual securities are traded on the last day of the year and classified in level 1 of the fair value hierarchy.

• Mutual funds (Level 1): Valued at the net asset value of shares held at year end based on quoted market prices determined in an active market. These assets are classified in level 1 of the fair value hierarchy.

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NOTE 13.  Fair Value Measurements, continued

• Common collective trust funds (Level 2): This class consists of private funds that invest in government and corporate securities and various short-term debt instruments. The net asset value of the investments is determined by reference to the fair value of the underlying securities of the trust, which are valued primarily through the use of directly or indirectly observable inputs. These assets are classified in level 2 of the fair value hierarchy.

• Corporate bonds, derivatives, government securities, and asset-backed securities (Level 2): Valued using price evaluations reflecting the bid and/or ask sides of the market for a similar investment as of the last day of the calendar plan year. Asset-backed securities include commercial mortgage-backed securities and collateralized mortgage obligations. These assets are classified in level 2 of the fair value hierarchy.

• Partnerships (Level 2): Private equity valued using the fair market values associated with the underlying investments at year end using net asset per share and is classified in level 2 of the fair value hierarchy.

The pension plan assets at fair value by level, within the fair value hierarchy, as of calendar plan years 2013 and 2012:

	Fiscal Years
	2013								2012
(Dollars in Millions)	Level 1		Level 2		Level 3		Total		Level 1		Level 2		Level 3		Total
Common Stock:
Information technology	$	173	$	—	$	—	$	173	$	169	$	—	$	—	$	169
Consumer discretionary	152		—		—		152		125		—		—		125
Health care	126		—		—		126		96		—		—		96
Financials	116		—		—		116		83		—		—		83
Industrials	108		—		—		108		78		—		—		78
Energy	59		—		—		59		58		—		—		58
Consumer staples	43		—		—		43		55		—		—		55
Materials	29		—		—		29		25		—		—		25
Other	31		—		—		31		33		—		—		33
Mutual funds	17		—		—		17		17		—		—		17
Corporate bonds	—		568		—		568		—		606		—		606
Common trust funds	—		553		—		553		—		426		—		426
Partnerships	—		314		—		314		—		296		—		296
Government securities	—		186		—		186		—		178		—		178
Asset-backed securities	—		24		—		24		—		28		—		28
Cash equivalents	—		—		—		—		—		20		—		20
Derivatives and other	—		1		—		1		—		1		—		1
Total investments at     fair value	$	854	$	1,646	$	—	$	2,500	$	739	$	1,555	$	—	$	2,294

For additional information related to pension assets, see Note 8, Employee Benefit Plans.

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NOTE 14. Other Comprehensive Income

CSX reports comprehensive earnings or loss in accordance with the Comprehensive Income Topic in the ASC in the Consolidated Comprehensive Income Statement. Total comprehensive earnings are defined as all changes in shareholders' equity during a period, other than those resulting from investments by and distributions to shareholders (e.g. issuance of equity securities and dividends). Generally, for CSX, total comprehensive earnings equals net earnings plus or minus adjustments for pension and other post-retirement liabilities. Total comprehensive earnings represent the activity for a period net of tax and were $2.3 billion, $1.8 billion and $1.8 billion for 2013, 2012 and 2011, respectively. See the revision of prior period financial statements in Note 1. Nature of Operations and Significant Accounting Policies.

While total comprehensive earnings is the activity in a period and is largely driven by net earnings in that period, accumulated other comprehensive income or loss (“AOCI”) represents the cumulative balance of other comprehensive income, net of tax, as of the balance sheet date. For CSX, AOCI is primarily the cumulative balance related to pension and other post-retirement benefit adjustments and CSX's share of AOCI of equity method investees. Changes in the AOCI balance by component are shown in the table below.

	Pension and Other Post-Employment Benefits			Other (a)			Accumulated Other Comprehensive Income (Loss)
(Dollars in millions)
Balance December 31, 2010, Net of Tax	$	(711	)	$	(60	)	$	(771	)
Other Comprehensive Loss
Loss Before Reclassifications	(216		)	(13		)	(229		)
Amounts Reclassified to Net Earnings(b)	75			(1		)	74
Tax (Expense) Benefit	53			(2		)	51
Total Other Comprehensive Loss	(88		)	(16		)	(104		)
Balance December 30, 2011, Net of Tax	(799		)	(76		)	(875		)
Other Comprehensive Loss
Loss Before Reclassifications	(172		)	(9		)	(181		)
Amounts Reclassified to Net Earnings(b)	88			(1		)	87
Tax Benefit	32			1			33
Total Other Comprehensive Loss	(52		)	(9		)	(61		)
Balance December 28, 2012, Net of Tax	(851		)	(85		)	(936		)
Other Comprehensive Loss
Income Before Reclassifications	510			24			534
Amounts Reclassified to Net Earnings(b)	111			(2		)	109
Tax (Expense) Benefit	(232		)	2			(230		)
Total Other Comprehensive Income	389			24			413
Balance December 27, 2013, Net of Tax	$	(462	)	$	(61	)	$	(523	)

^(a) Other primarily represents CSX's share of AOCI of equity method investees. Amounts reclassified to net earnings are included in other income - net on the consolidated income statements.

^(b) Amounts reclassified to net earnings primarily relate to the amortization of actuarial losses and are included in labor and fringe on the consolidated income statements. See Note 8. Employee Benefit Plans for further information.

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NOTE 15.  Quarterly Financial Data (Unaudited)

Pursuant to Article 3 of the SEC’s Regulation S-X, the following are selected quarterly financial data, which has been revised for all four quarters of 2011 and 2012 as well as the first three quarters of 2013. See the revision of prior period financial statements in Note 1. Nature of Operations and Significant Accounting Policies.

Fiscal Year Ended December 2013	Quarters
(Dollars in Millions, Except Per Share Amounts)	1st		2nd		3rd		4th		Full Year
Revenue	$	2,963	$	3,046	$	2,985	$	3,032	$	12,026
Operating Income	880		940		840		813		3,473
Net Earnings	462		521		455		426		1,864
Earnings Per Share, Basic	$	0.45	$	0.51	$	0.45	$	0.42	$	1.83
Earnings Per Share, Assuming Dilution	0.45		0.51		0.45		0.42		1.83
Fiscal Year Ended December 2012
Revenue	$	3,018	$	2,986	$	2,864	$	2,895	$	11,763
Operating Income	908		917		824		815		3,464
Net Earnings	481		496		437		449		1,863
Earnings Per Share, Basic	$	0.46	$	0.48	$	0.42	$	0.44	$	1.80
Earnings Per Share, Assuming Dilution	0.46		0.48		0.42		0.44		1.79
Fiscal Year Ended December 2011
Revenue	$	2,827	$	3,013	$	2,962	$	2,993	$	11,795
Operating Income	790		920		877		883		3,470
Net Earnings	406		502		463		483		1,854
Earnings Per Share, Basic	$	0.37	$	0.46	$	0.43	$	0.46	$	1.71
Earnings Per Share, Assuming Dilution	0.36		0.45		0.43		0.46		1.70

NOTE 16.  Summarized Consolidating Financial Data

In 2007, CSXT, a wholly-own subsidiary of CSX Corporation, sold secured equipment notes maturing in 2023, and in 2008, CSXT sold additional secured equipment notes maturing in 2014 in registered public offerings.  CSX has fully and unconditionally guaranteed the notes. In connection with the notes, the Company is providing the following condensed consolidating financial information in accordance with SEC disclosure requirements. Each entity in the consolidating financial information follows the same accounting policies as described in the consolidated financial statements, except for the use of the equity method of accounting to reflect ownership interests in subsidiaries which are eliminated upon consolidation and the allocation of certain expenses of CSX incurred for the benefit of its subsidiaries.

Condensed consolidating financial information for the obligor, CSXT, and parent guarantor, CSX, is shown in the tables below. Prior period financial information of CSXT has been revised. See the revision of prior period financial statements in Note 1. Nature of Operations and Significant Accounting Policies.

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PART II

Item 8. Financial Statements and Supplementary Data

NOTE 16.  Summarized Consolidating Financial Data, continued

Consolidating Income Statements

(Dollars in Millions)

Fiscal Year Ended December 2013	CSX Corporation			CSX Transportation			Eliminations and Other			Consolidated
Revenue	$	—		$	11,950		$	76		$	12,026
Expense	(371		)	9,091			(167		)	8,553
Operating Income	371			2,859			243			3,473
Equity in Earnings of Subsidiaries	1,964			(1		)	(1,963		)	—
Interest Expense	(516		)	(62		)	16			(562		)
Other Income - Net	(7		)	(2		)	20			11
Earnings Before Income Taxes	1,812			2,794			(1,684		)	2,922
Income Tax Benefit (Expense)	52			(1,028		)	(82		)	(1,058		)
Net Earnings	$	1,864		$	1,766		$	(1,766	)	$	1,864
Total Comprehensive Earnings	$	2,277		$	1,825		$	(1,825	)	$	2,277
Fiscal Year Ended December 2012
Revenue	$	—		$	11,696		$	67		$	11,763
Expense	(355		)	8,779			(125		)	8,299
Operating Income	355			2,917			192			3,464
Equity in Earnings of Subsidiaries	1,992			(2		)	(1,990		)	—
Interest Expense	(513		)	(70		)	17			(566		)
Other Income - Net	(3		)	61			15			73
Earnings Before Income Taxes	1,831			2,906			(1,766		)	2,971
Income Tax Benefit (Expense)	32			(1,065		)	(75		)	(1,108		)
Net Earnings	$	1,863		$	1,841		$	(1,841	)	$	1,863
Total Comprehensive Earnings	$	1,802		$	1,818		$	(1,818	)	$	1,802
Fiscal Year Ended December 2011
Revenue	$	—		$	11,728		$	67		$	11,795
Expense	(278		)	8,679			(76		)	8,325
Operating Income	278			3,049			143			3,470
Equity in Earnings of Subsidiaries	1,979			3			(1,982		)	—
Interest Expense	(496		)	(83		)	27			(552		)
Other Income - Net	2			19			1			22
Earnings Before Income Taxes	1,763			2,988			(1,811		)	2,940
Income Tax Benefit (Expense)	91			(1,101		)	(76		)	(1,086		)
Net Earnings	$	1,854		$	1,887		$	(1,887	)	$	1,854
Total Comprehensive Earnings	$	1,750		$	1,873		$	(1,873	)	$	1,750

102

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PART II

Item 8. Financial Statements and Supplementary Data

NOTE 16.  Summarized Consolidating Financial Data, continued

Consolidating Balance Sheets

(Dollars in Millions)

As of December 27, 2013	CSX Corporation			CSX Transportation			Eliminations and Other			Consolidated
ASSETS
Current Assets:
Cash and Cash Equivalents	$	439		$	91		$	62		$	592
Short-term Investments	472			—			15			487
Accounts Receivable - Net	3			240			809			1,052
Receivable from Affiliates	1,141			2,635			(3,776		)	—
Materials and Supplies	—			252			—			252
Deferred Income Taxes	(5		)	161			(1		)	155
Other Current Assets	1			57			6			64
Total Current Assets	2,051			3,436			(2,885		)	2,602
Properties	1			34,987			2,196			37,184
Accumulated Depreciation	(1		)	(8,778		)	(1,114		)	(9,893		)
Properties - Net	—			26,209			1,082			27,291
Investments in Conrail	—			—			752			752
Affiliates and Other Companies	(39		)	612			(27		)	546
Investment in Consolidated Subsidiaries	20,226			—			(20,226		)	—
Other Long-term Assets	217			388			(14		)	591
Total Assets	$	22,455		$	30,645		$	(21,318	)	$	31,782
LIABILITIES AND SHAREHOLDERS' EQUITY
Current Liabilities:
Accounts Payable	$	110		$	809		$	38		$	957
Labor and Fringe Benefits Payable	38			491			58			587
Payable to Affiliates	3,298			535			(3,833		)	—
Casualty, Environmental and Other Reserves	—			136			15			151
Current Maturities of Long-term Debt	200			333			—			533
Income and Other Taxes Payable	(397		)	479			9			91
Other Current Liabilities	—			103			2			105
Total Current Liabilities	3,249			2,886			(3,711		)	2,424
Casualty, Environmental and Other Reserves	—			231			69			300
Long-term Debt	8,308			714			—			9,022
Deferred Income Taxes	(64		)	8,548			178			8,662
Other Long-term Liabilities	479			512			(121		)	870
Total Liabilities	11,972			12,891			(3,585		)	21,278
Shareholders' Equity:
Common Stock, $1 Par Value	1,009			181			(181		)	1,009
Other Capital	61			5,077			(5,077		)	61
Retained Earnings	9,936			12,514			(12,514		)	9,936
Accumulated Other Comprehensive Loss	(523		)	(43		)	43			(523		)
Noncontrolling Minority Interest	—			25			(4		)	21
Total Shareholders' Equity	10,483			17,754			(17,733		)	10,504
Total Liabilities and Shareholders' Equity	$	22,455		$	30,645		$	(21,318	)	$	31,782

103

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PART II

Item 8. Financial Statements and Supplementary Data

NOTE 16.  Summarized Consolidating Financial Data, continued

Consolidating Balance Sheets

(Dollars in Millions)

As of December 28, 2012	CSX Corporation			CSX Transportation			Eliminations and Other			Consolidated
ASSETS
Current Assets
Cash and Cash Equivalents	$	481		$	235		$	68		$	784
Short-term Investments	555			—			32			587
Accounts Receivable - Net	3			579			532			1,114
Receivable from Affiliates	993			1,798			(2,791		)	—
Materials and Supplies	—			274			—			274
Deferred Income Taxes	52			62			5			119
Other Current Assets	11			64			—			75
Total Current Assets	2,095			3,012			(2,154		)	2,953
Properties	8			33,333			1,938			35,279
Accumulated Depreciation	(8		)	(8,225		)	(996		)	(9,229		)
Properties - Net	—			25,108			942			26,050
Investments in Conrail	—			—			695			695
Affiliates and Other Companies	(39		)	593			(43		)	511
Investment in Consolidated Subsidiaries	18,917			—			(18,917		)	—
Other Long-term Assets	186			368			(40		)	514
Total Assets	$	21,159		$	29,081		$	(19,517	)	$	30,723
LIABILITIES AND SHAREHOLDERS' EQUITY
Current Liabilities
Accounts Payable	$	133		$	780		$	35		$	948
Labor and Fringe Benefits Payable	35			391			42			468
Payable to Affiliates	2,679			411			(3,090		)	—
Casualty, Environmental and Other Reserves	—			124			16			140
Current Maturities of Long-term Debt	700			80			—			780
Income and Other Taxes Payable	(262		)	418			13			169
Other Current Liabilities	(1		)	139			2			140
Total Current Liabilities	3,284			2,343			(2,982		)	2,645
Casualty, Environmental and Other Reserves	—			256			81			337
Long-term Debt	8,005			1,047			—			9,052
Deferred Income Taxes	(153		)	8,131			118			8,096
Other Long-term Liabilities	901			656			(100		)	1,457
Total Liabilities	12,037			12,433			(2,883		)	21,587
Shareholders' Equity
Common Stock, $1 Par Value	1,020			181			(181		)	1,020
Other Capital	28			5,672			(5,672		)	28
Retained Earnings	9,010			10,874			(10,874		)	9,010
Accumulated Other Comprehensive Loss	(936		)	(102		)	102			(936		)
Noncontrolling Minority Interest	—			23			(9		)	14
Total Shareholders' Equity	9,122			16,648			(16,634		)	9,136
Total Liabilities and Shareholders' Equity	$	21,159		$	29,081		$	(19,517	)	$	30,723

104

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PART II

Item 8. Financial Statements and Supplementary Data

NOTE 16.  Summarized Consolidating Financial Data, continued

Consolidating Cash Flow Statements

(Dollars in Millions)

Fiscal Year Ended December 2013	CSX Corporation			CSX Transportation			Eliminations and Other			Consolidated
Operating Activities
Net Cash Provided by (Used in) Operating Activities	$	1,004		$	3,005		$	(742	)	$	3,267
Investing Activities
Property Additions	—			(2,053		)	(260		)	(2,313		)
Purchases of Short-term Investments	(1,251		)	—			(5		)	(1,256		)
Proceeds from Sales of Short-term Investments	1,335			—			66			1,401
Proceeds from Property Dispositions	—			53			—			53
Other Investing Activities	(134		)	(315		)	337			(112		)
Net Cash Provided by (Used in) Investing Activities	(50		)	(2,315		)	138			(2,227		)
Financing Activities
Long-term Debt Issued	500			—			—			500
Long-term Debt Repaid	(700		)	(80		)	—			(780		)
Dividends Paid	(600		)	(730		)	730			(600		)
Stock Options Exercised	9			—			—			9
Shares Repurchased	(353		)	—			—			(353		)
Other Financing Activities	148			(24		)	(132		)	(8		)
Net Cash Provided by (Used in) Financing Activities	(996		)	(834		)	598			(1,232		)
Net Decrease in Cash and Cash Equivalents	(42		)	(144		)	(6		)	(192		)
Cash and Cash Equivalents at Beginning of Period	481			235			68			784
Cash and Cash Equivalents at End of Period	$	439		$	91		$	62		$	592

105

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PART II

Item 8. Financial Statements and Supplementary Data

NOTE 16.  Summarized Consolidating Financial Data, continued

Consolidating Cash Flow Statements

(Dollars in Millions)

Fiscal Year Ended December 2012	CSX Corporation			CSX Transportation			Eliminations and Other			Consolidated
Operating Activities
Net Cash Provided by (Used in) Operating Activities	$	579		$	2,716		$	(349	)	$	2,946
Investing Activities
Property Additions	—			(2,104		)	(237		)	(2,341		)
Purchases of Short-term Investments	(605		)	—			(28		)	(633		)
Proceeds from Sales of Short-term Investments	525			—			56			581
Proceeds from Property Dispositions	—			186			—			186
Other Investing Activities	(10		)	102			(162		)	(70		)
Net Cash Provided by (Used in) Investing Activities	(90		)	(1,816		)	(371		)	(2,277		)
Financing Activities
Long-term Debt Issued	1,100			—			—			1,100
Long-term Debt Repaid	(400		)	(106		)	(2		)	(508		)
Dividends Paid	(558		)	(715		)	715			(558		)
Stock Options Exercised	14			—			—			14
Shares Repurchased	(734		)	—			—			(734		)
Other Financing Activities	21			2			(5		)	18
Net Cash Provided by (Used in) Financing Activities	(557		)	(819		)	708			(668		)
Net (Decrease) Increase in Cash and Cash Equivalents	(68		)	81			(12		)	1
Cash and Cash Equivalents at Beginning of Period	549			154			80			783
Cash and Cash Equivalents at End of Period	$	481		$	235		$	68		$	784

106

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PART II

Item 8. Financial Statements and Supplementary Data

NOTE 16.  Summarized Consolidating Financial Data, continued

Consolidating Cash Flow Statements

(Dollars in Millions)

Fiscal Year Ended December 2011	CSX Corporation			CSX Transportation			Eliminations and Other			Consolidated
Operating Activities
Net Cash Provided by (Used in) Operating Activities	$	1,231		$	2,746		$	(486	)	$	3,491
Investing Activities
Property Additions	—			(2,034		)	(263		)	(2,297		)
Purchases of Short-term Investments	(475		)	—			(17		)	(492		)
Proceeds from Sales of Short-term Investments	—			—			74			74
Proceeds from Property Dispositions	—			239			1			240
Other Investing Activities	(20		)	(133		)	41			(112		)
Net Cash Provided by (Used in) Investing Activities	(495		)	(1,928		)	(164		)	(2,587		)
Financing Activities
Long-term Debt Issued	1,200			—			—			1,200
Long-term Debt Repaid	(507		)	(95		)	(3		)	(605		)
Dividends Paid	(480		)	(680		)	680			(480		)
Stock Options Exercised	29			—			—			29
Shares Repurchased	(1,564		)	—			—			(1,564		)
Other Financing Activities	35			(7		)	(21		)	7
Net Cash Provided by (Used in) Financing Activities	(1,287		)	(782		)	656			(1,413		)
Net (Decrease) Increase in Cash and Cash Equivalents	(551		)	36			6			(509		)
Cash and Cash Equivalents at Beginning of Period	1,100			118			74			1,292
Cash and Cash Equivalents at End of Period	$	549		$	154		$	80		$	783

107

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PART II

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 December 27, 2013, under the supervision and with the participation of CSX's Chief Executive Officer (“CEO”) and Chief Financial Officer (“CFO”), management has evaluated the effectiveness of the design and operation of the Company's disclosure controls and procedures. Based on that evaluation, the CEO and CFO concluded that, as of December 27, 2013, the Company's disclosure controls and procedures were effective at the reasonable assurance level in timely alerting them to material information required to be included in CSX’s periodic SEC reports. During the fourth quarter of 2013, the Company enhanced controls and procedures over revenue recognition. There were no other changes in the Company's internal controls over financial reporting during the fourth quarter of 2013 that have materially affected or are reasonably likely to materially affect the Company's internal control over financial reporting.

Management's Report on Internal Control over Financial Reporting

CSX’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 supervision and with the participation of the management of CSX, including CSX’s CEO and CFO, CSX conducted an evaluation of the effectiveness of the Company’s internal control over financial reporting as of December 27, 2013 based on the 1992 framework in Internal Control – Integrated Framework issued by the Committee of Sponsoring Organizations of the Treadway Commission which is also referred to as COSO. Based on that evaluation, management of CSX concluded that the Company’s internal control over financial reporting was effective as of December 27, 2013.  Management's assessment of the effectiveness of internal control over financial reporting is expressed at the level of reasonable assurance because a control system, no matter how well designed and operated, can provide only reasonable, but not absolute, assurance that the control system's objectives will be met.

The Company’s internal control over financial reporting as of December 27, 2013 has been audited by Ernst & Young LLP, an independent registered public accounting firm, as stated in their report which is included elsewhere herein.

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PART II

Report of Independent Registered Public Accounting Firm

The Board of Directors and Shareholders of CSX Corporation

We have audited CSX Corporation’s (CSX) internal control over financial reporting as of December 27, 2013, based on criteria established in Internal Control—Integrated Framework issued by the Committee of Sponsoring Organizations of the Treadway Commission (1992 framework) (the COSO criteria). CSX's management is responsible 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 an opinion on the Company’s internal control over financial reporting based on our audit.

We conducted our audit in accordance with the standards of the Public Company Accounting Oversight Board (United States). Those standards require that we plan and perform the audit to obtain reasonable assurance about whether effective internal control over financial reporting was maintained in all material respects. Our audit included obtaining an understanding of internal control over financial reporting, assessing the risk that a material weakness exists, testing and evaluating the design and operating effectiveness of internal control based on the assessed risk, and performing such other procedures as we considered necessary in the circumstances. We believe that our audit provides a reasonable basis for our opinion.

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 (1) pertain to the maintenance of records that, in reasonable detail, accurately and fairly reflect the transactions and dispositions of the assets of the company; (2) 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 (3) 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.

In our opinion, CSX maintained, in all material respects, effective internal control over financial reporting as of December 27, 2013, based on the COSO criteria.

We also have audited, in accordance with the standards of the Public Company Accounting Oversight Board (United States), the 2013 consolidated financial statements of CSX and our report dated February 12, 2014 expressed an unqualified opinion thereon.

/s/ Ernst & Young LLP

Certified Public Accountants

Jacksonville, Florida

February 12, 2014

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PART II

Changes in Internal Control over Financial Reporting

There were no material changes in the Company’s internal control over financial reporting.

Item 9B.  Other Information

None

PART III

Item 10.  Directors, Executive Officers of the Registrant and Corporate Governance

In accordance with Instruction G(3) of Form 10-K, the information required by this item is incorporated herein by reference to the Proxy Statement.  The Proxy Statement will be filed not later than April 28, 2014 with respect to its 2014 annual meeting of shareholders, except for the information regarding the executive officers of the Company.   Information regarding executive officers is included in Part I of this report under the caption "Executive Officers of the Registrant."

Item 11.  Executive Compensation

In accordance with Instruction G(3) of Form 10-K, the information required by this Item is incorporated herein by reference to the Proxy Statement (see Item 10 above).

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

In accordance with Instruction G(3) of Form 10-K, the information required by this Item is incorporated herein by reference to the Proxy Statement (see Item 10 above).

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

In accordance with Instruction G(3) of Form 10-K, the information required by this Item is incorporated herein by reference to the Proxy Statement (see Item 10 above).

Item 14.  Principal Accounting Fees and Services

In accordance with Instruction G(3) of Form 10-K, the information required by this Item is incorporated herein by reference to the Proxy Statement (see Item 10 above).

110

CSX CORPORATION

PART IV

Item 15.  Exhibits, Financial Statement Schedules

(a)(1) Financial Statements

See Index to Consolidated Financial Statements on page 51.

(2) Financial Statement Schedules

The information required by Schedule II, Valuation and Qualifying Accounts, is included in Note 5 to the Consolidated Financial Statements, Casualty, Environmental and Other Reserves.  All other financial statement schedules are not applicable.

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PART IV

(3) Exhibits

2.1	Distribution Agreement, dated as of July 26, 2004, by and among CSX Corporation, CSX Transportation, Inc., CSX Rail Holding Corporation, CSX Northeast Holding Corporation, Norfolk Southern Corporation, Norfolk Southern Railway Company, CRR Holdings LLC, Green Acquisition Corp., Conrail Inc., Consolidated Rail Corporation, New York Central Lines LLC, Pennsylvania Lines LLC, NYC Newco, Inc. and PRR Newco, Inc. (incorporated herein by reference to Exhibit 2.1 to the Registrant’s Current Report on Form 8-K filed with the Commission on September 2, 2004)
3.1	Amended and Restated Articles of Incorporation of the Registrant (incorporated herein by reference to Exhibit 3.1 to the Registrant's Current Report on Form 8-K filed with the Commission on December 14, 2004)
3.1(a)	Articles of Amendment to CSX Corporation’s Amended and Restated Articles of Incorporation of the Registrant (incorporated herein by reference to Exhibit 3.1 to the Registrant's Current Report on Form 8-K filed with the Commission on July 18, 2006)
3.1(b)	Articles of Amendment to CSX Corporation's Amended and Restated Articles of Incorporation of the Registrant (incorporated herein by reference to Exhibit 3.1 to the Registrant's Current Report on Form 8-K filed with the Commission on May 4, 2011)
3.2	Bylaws of the Registrant, amended effective as of September 24, 2008 (incorporated herein by reference to Exhibit 3.2 of the Registrant's Current Report on Form 8-K filed with the Commission on September 25, 2008)
	Instruments Defining the Rights of Security Holders, Including Debentures:
4.1(a)	Indenture, dated August 1, 1990, between the Registrant and The Chase Manhattan Bank, as Trustee (incorporated herein by reference to the Registrant's Form SE, dated September 7, 1990, filed with the Commission)
4.1(b)	First Supplemental Indenture, dated as of June 15, 1991, between the Registrant and The Chase Manhattan Bank, as Trustee (incorporated herein by reference to Exhibit 4(c) to the Registrant's Form SE, dated May 28, 1992, filed with the Commission)
4.1(c)	Second Supplemental Indenture, dated as of May 6, 1997, between the Registrant and The Chase Manhattan Bank, as Trustee (incorporated herein by reference to Exhibit 4.3 to the Registrant's Registration Statement on Form S-4 (Registration No. 333-28523) filed with the Commission on June 5, 1997)
4.1(d)	Third Supplemental Indenture, dated as of April 22, 1998, between the Registrant and The Chase Manhattan Bank, as Trustee (incorporated herein by reference to Exhibit 4.2 to the Registrant's Current Report on Form 8-K filed with the Commission on May 12, 1998)
4.1(e)	Fourth Supplemental Indenture, dated as of October 30, 2001, between the Registrant and The Chase Manhattan Bank, as Trustee (incorporated herein by reference to Exhibit 4.1 to the Registrant's Report on Form 10-Q filed with the Commission on November 7, 2001)
4.1(f)	Fifth Supplemental Indenture, dated as of October 27, 2003 between the Registrant and The Chase Manhattan Bank, as Trustee (incorporated herein by reference to Exhibit 4.1 to the Registrant's Report on Form 8-K filed with the Commission on October 27, 2003)
4.1(g)	Sixth Supplemental Indenture, dated as of September 23, 2004 between the Registrant and JP Morgan Chase Bank, formerly The Chase  Manhattan Bank, as Trustee (incorporated herein by reference to Exhibit 4.1 to the Registrant’s Report on Form 10-Q filed with the Commission on November  3, 2004)
4.1(h)	Seventh Supplemental Indenture, dated as of April 25, 2007, between the Registrant and The Bank of New York (as successor to JP Morgan Chase Bank), as Trustee (incorporated herein by reference to Exhibit 4.4 to the Registrant's Report on Form 8-K filed with the Commission on April 26, 2007).
4.1(i)	Eighth Supplemental Indenture, dated as of March 24, 2010, between the Registrant and The Bank of New York Mellon(as successor to JP Morgan Chase Bank), as Trustee (incorporated herein by reference to Exhibit 4.1 to the Registrant's Report on Form 10-Q filed with the Commission on April 19, 2010).

112

CSX CORPORATION

PART IV

Pursuant to Regulation S-K, Item 601(b)(4)(iii), instruments that define the rights of holders of the Registrant's long-term debt securities, where the long-term debt securities authorized under each such instrument do not exceed 10% of the Registrant's total assets, have been omitted and will be furnished to the Commission upon request.

	Material Contracts:
10.2**	CSX Directors’ Pre-2005 Deferred Compensation Plan (as amended through January 8, 2008) (incorporated herein by reference to Exhibit 10.2 to the Registrant’s Annual Report on Form 10-K filed with the Commission on February 22, 2008)
10.3**	CSX Directors’ Deferred Compensation Plan effective January 1, 2005 (incorporated herein by reference to Exhibit 10.3 to the Registrant’s Annual Report on Form 10-K filed with the Commission on February 22, 2008)
10.4**	CSX Directors' Charitable Gift Plan, as amended (incorporated herein by reference to Exhibit 10.4 to the Registrant's Annual Report on Form 10-K filed with the Commission on March 4, 1994)
10.5**	CSX Directors' Matching Gift Plan (as amended through February 9, 2011)
10.6**	Railroad Retirement Benefits Agreement with M. J. Ward (incorporated herein by reference to Exhibit 10.13 to the Registrant's Report on Form 10-K filed with the Commission on February 26, 2003)
10.12**	Special Retirement Plan of CSX Corporation and Affiliated Companies (as amended through February 14, 2001) (incorporated herein by reference to Exhibit 10.23 to the Registrant's Report on Form 10-K filed with the Commission on March 4, 2002)
10.13**	Supplemental Retirement Benefit Plan of CSX Corporation and Affiliated Companies (as amended through February 14, 2001) (incorporated herein by reference to Exhibit 10.24 of the Registrant's Report on Form 10-K filed with the Commission on March 4, 2002)
10.14**	Senior Executive Incentive Compensation Plan (incorporated herein by reference to Appendix B to the Registrant's Definitive Proxy Statement filed with the Commission on March 17, 2000)
10.16	Transaction Agreement, dated as of June 10, 1997, by and among CSX Corporation, CSX Transportation, Inc., Norfolk Southern Corporation, Norfolk Southern Railway Company, Conrail Inc., Consolidated Rail Corporation and CRR Holdings LLC, with certain schedules thereto (incorporated herein by reference to Exhibit 10 to the Registrant’s Current Report on Form 8-K filed with the Commission on July 8, 1997)
10.17	Amendment No. 1, dated as of August 22, 1998, to the Transaction Agreement, dated as of June 10, 1997, by and among CSX Corporation, CSX Transportation, Inc., Norfolk Southern Corporation, Norfolk Southern Railway Company, Conrail Inc., Consolidated Rail Corporation and CRR Holdings, LLC (incorporated herein by reference to Exhibit 10.1 to the Registrant's Current Report on Form 8-K filed with the Commission on June 11, 1999)
10.18	Amendment No. 2, dated as of June 1, 1999, to the Transaction Agreement, dated as of June 10, 1997, by and among CSX Corporation, CSX Transportation, Inc., Norfolk Southern Corporation, Norfolk Southern Railway Company, Conrail Inc., Consolidated Rail Corporation and CRR Holdings, LLC (incorporated herein by reference to Exhibit 10.2 to the Registrant's Current Report on Form 8-K filed with the Commission on June 11, 1999)
10.19	Amendment No. 3, dated as of August 1, 2000, to the Transaction Agreement by and among CSX Corporation, CSX Transportation, Inc., Norfolk Southern Corporation, Norfolk Southern Railway Company, Conrail Inc., Consolidated Rail Corporation, and CRR Holdings, LLC. (incorporated herein by reference to Exhibit 10.34 to the Registrant’s Annual Report on Form 10-K dated March 1, 2001)

113

CSX CORPORATION

PART IV

10.20	Amendment No. 4, dated and effective as of June 1, 1999, and executed in April 2004, to the Transaction Agreement, dated as of June 10, 1997, by and among CSX Corporation, CSX Transportation, Inc., Norfolk Southern Corporation, Norfolk Southern Railway Company, Conrail Inc., Consolidated Rail Corporation and CRR Holdings, LLC (incorporated herein by reference to Exhibit 99.1 to the Registrant’s Current Report on Form 8-K filed with the Commission on August 6, 2004)
10.21	Amendment No. 5, dated as of August 27, 2004, to the Transaction Agreement, dated as of June 10, 1997, by and among CSX Corporation, CSX Transportation, Inc., Norfolk Southern Corporation, Norfolk Southern Railway Company, Conrail Inc., Consolidated Rail Corporation and CRR Holdings LLC (incorporated herein by reference to Exhibit 10.1 to the Registrant’s Current Report on Form 8-K filed with the Commission on September 2, 2004)
10.22	Shared Assets Area Operating Agreement for Detroit, dated as of June 1, 1999, by and among Consolidated Rail Corporation, CSX Transportation, Inc. and Norfolk Southern Railway Corporation, with exhibit thereto (incorporated herein by reference to Exhibit 10.6 to the Registrant's Current Report on Form 8-K filed with the Commission on June 11, 1999)
10.23	Shared Assets Area Operating Agreement for North Jersey, dated as of June 1, 1999, by and among Consolidated Rail Corporation, CSX Transportation, Inc. and Norfolk Southern Railway Company, with exhibit thereto (incorporated herein by reference to Exhibit 10.4 to the Registrant's Current Report on Form 8-K filed with the Commission on June 11, 1999)
10.24	Shared Assets Area Operating Agreement for South Jersey/Philadelphia, dated as of June 1, 1999, by and among Consolidated Rail Corporation, CSX Transportation, Inc. and Norfolk Southern Railway Company, with exhibit thereto (incorporated herein by reference to Exhibit 10.5 to the Registrant's Current Report on Form 8-K filed with the Commission on June 11, 1999)
10.25	Monongahela Usage Agreement, dated as of June 1, 1999, by and among CSX Transportation, Inc., Norfolk Southern Railway Company, Pennsylvania Lines LLC and New York Central Lines LLC, with exhibit thereto (incorporated herein by reference to Exhibit 10.7 to the Registrant's Current Report on Form 8-K filed with the Commission on June 11, 1999)
10.26	Tax Allocation Agreement, dated as of August 27, 2004, by and among CSX Corporation, Norfolk Southern Corporation, Green Acquisition Corp., Conrail Inc., Consolidated Rail Corporation, New York Central Lines LLC and Pennsylvania Lines LLC (incorporated herein by reference to Exhibit 10.2 to the Registrant's Current Report on Form 8-K filed with the Commission on September 2, 2004)
10.27**	Restricted Stock Award Agreement with Oscar Munoz (incorporated herein by reference to Exhibit 10.1 to the Registrant's Current Report on Form 8-K filed with the Commission on February 10, 2012)
10.28* **	Restricted Stock Award Agreement with Michael J. Ward
10.29* **	Restricted Stock Award Agreement with Fredrik J. Eliasson
10.30* **	Restricted Stock Award Agreement with Clarence W. Gooden
10.31	Revolving Credit Agreement, dated September 30, 2011 (incorporated herein by reference to Exhibit 10.1 to the Registrant's Current Report on Form 8-K filed with the Commission on October 4, 2011)
10.32**	Long-term Incentive Plan effective May 3, 2011 (incorporated herein by reference to Exhibit 10.1 to the Registrant’s Current Report on Form 8-K filed with the Commission on May 5, 2011)
10.33**	Long-term Incentive Plan, dated May 8, 2012 (incorporated herein by reference to Exhibit 10.1 to the Registrant's Current Report on Form 8-K filed with the Commission on May 11, 2012)
10.34**	Long-term Incentive Plan, dated May 7, 2013 (incorporated herein by reference to Exhibit 10.1 to the Registrant's Current Report on Form 8-K filed with the Commission on May 13, 2013)
10.35**	CSX Stock and Incentive Award Plan (incorporated herein by reference to Exhibit 10.1 to the Registrant’s Current Report on Form 8-K filed with the Commission on May 7, 2010)
21*	Subsidiaries of the Registrant

114

CSX CORPORATION

PART IV

23*	Consent of Independent Registered Public Accounting Firm
24*	Powers of Attorney
31*	Rule 13a-14(a) Certifications
32*	Section 1350 Certifications
99*	Annual CEO Certification pursuant to NYSE Rule 303A.12(a)
101*	The following financial information from CSX Corporation’s Annual Report on Form 10-K for the year ended December 27, 2013 filed with the SEC on February 12, 2014, formatted in XBRL includes: (i) Consolidated Income Statements for the fiscal periods ended December 27, 2013, December 28, 2012 and December 30, 2011, (ii) Consolidated Comprehensive Income Statements for the fiscal periods ended December 27, 2013, December 28, 2012 and December 30, 2011, (iii) Consolidated Balance Sheets at December 27, 2013 and December 28, 2012, (iv) Consolidated Cash Flow Statements for the fiscal periods ended December 27, 2013, December 28, 2012 and December 30, 2011, and (v) the Notes to Consolidated Financial Statements.
	* Filed herewith
	** Management Contract or Compensatory Plan or Arrangement
	Note: Items not filed herewith have been submitted in previous SEC filings.

115

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.

CSX CORPORATION

(Registrant)

By:   /s/ CAROLYN T. SIZEMORE

Carolyn T. Sizemore

Vice President and Controller

(Principal Accounting Officer)

Dated: February 12, 2014

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 indicated on February 12, 2014.

Signature	Title
	Chairman of the Board, President, Chief
/s/ MICHAEL J. WARD	Executive Officer and Director
Michael J. Ward	(Principal Executive Officer)
/s/ FREDRIK J. ELIASSON	Executive Vice President and Chief Financial
Fredrik J. Eliasson	Officer (Principal Financial Officer)
/s/ CAROLYN T. SIZEMORE	Vice President and Controller
Carolyn T. Sizemore	(Principal Accounting Officer)
/s/ ELLEN M. FITZSIMMONS	Executive Vice President of Law and Public Affairs, General Counsel and Corporate Secretary
Ellen M. Fitzsimmons	*Attorney-in-Fact

116

SIGNATURES

Signature	Title
*	Director
Donna M. Alvarado
*	Director
John B. Breaux
*	Director
Pamela L. Carter
*	Director
Steven T. Halverson
*	Director
Edward J. Kelly, III
*	Director
Gilbert H. Lamphere
*	Director
John D. McPherson
*	Director
Timothy T. O'Toole
*	Director
David M. Ratcliffe
*	Director
Donald J. Shepard
*	Director
J.C. Watts, Jr.
*	Director
J. Steven Whisler

117

EX-10.28

Exhibit 10.28

RESTRICTED STOCK UNIT GRANT AGREEMENT

This restricted stock unit Agreement is made and entered into as of May 8, 2013, by and between CSX Corporation (“CSX”), a Virginia corporation, and Michael J. Ward (the “Recipient”). CSX grants restricted stock units (“RSUs”) to encourage a long-term perspective and commitment from its employees.

In consideration of their mutual promises and undertakings, CSX and Recipient mutually agree as follows:

1. Award. In consideration of Recipient’s continued and uninterrupted employment with CSX, or an Affiliate thereof, for the period from May 8, 2013 through May 7, 2016 (the “Restricted Period”), the Recipient is hereby granted 64,048 RSUs wherein each unit represents one share of CSX Corporation common stock, $1 par value (“CSX Stock”).

2. Vesting. The RSUs shall fully vest upon Recipient’s completion of the Restricted Period, except as provided below in Section 6.

3. Settlement and Delivery of Shares with Holding Period. Payment of vested RSUs will be paid as soon as practicable after completion of the Restricted Period in the form of CSX Stock. Such shares may not be sold for a period of one year following receipt with the following exceptions: (i) after the Recipient terminates employment, (ii) for payment by Recipient of applicable withholding taxes, (iii) where Recipient sells shares in connection with a change in control event as defined by the CSX Stock and Incentive Award Plan, and (iv) a person or entity that acquires the shares from the Recipient by will or the laws of descent and distribution.

4. CSX Stock and Incentive Award Plan. The grant hereunder is made under the CSX Stock and Incentive Award Plan (the “Plan”), the provisions of which are hereby incorporated by reference except as otherwise provided specifically herein.

5. Dividend Equivalents. During the Restricted Period, CSX will pay to Recipient, based upon the number of RSUs granted, an amount equal to dividends (“Dividend Equivalents”) declared and payable on CSX Stock net of applicable withholding taxes.

6. Termination of Employment. In the event of a termination of Recipient’s employment before the end of the Restricted Period for any reason other than death, disability or retirement, all RSUs shall be forfeited. In the event of a termination of Recipient’s employment before the end of the Restricted Period, by reason of Recipient’s death or disability, full and immediate vesting shall apply, and CSX Stock shall be awarded as soon as practicable following such event. In the event of a termination of Recipient’s employment before the end of the Restricted Period by reason of retirement, pro rata vesting shall apply, and CSX Stock shall be awarded in December of the year in which such retirement occurs. The pro rata computation will be determined based upon the number of months of employment completed during the Restricted Period. 

For purposes of this Agreement, “retirement” shall mean the attainment of age 55 and 10 years of service with the Company or an Affiliate, or attainment of age 65. “Disability” shall mean the Recipient’s becoming disabled within the meaning of the long-term disability plan of the Company covering the Recipient.

Any RSUs granted to the Recipient that do not vest under the terms of this Agreement shall be forfeited.

7. Withholding of Tax. Recipient shall be solely responsible for any and all federal, state, and local taxes which may be imposed on the Recipient as a result of the vesting of the RSU grant, the receipt of CSX Stock, and receipt of dividend equivalents. CSX is required to withhold income taxes at the prescribed supplemental income and employment tax rates at the time such taxes are due. Upon issuance of CSX stock, CSX will withhold the minimum number of whole shares equal in value to such required withholding amount. No additional voluntary withholding amount is permitted.

8. Assignment of Restricted Stock Units Prohibited. The RSUs may not be sold, assigned, pledged, exchanged, hypothecated or otherwise transferred, encumbered or disposed of.

9. Shareholder Rights. The RSUs shall confer no other shareholder rights upon the Recipient except as provided herein unless and until such time as the award has been settled by the transfer of CSX Stock to the Recipient.

10. Not a Contract of Employment. Nothing in this Agreement shall be interpreted or construed to create a contract of employment between the Company and the Recipient. This Agreement is intended solely to provide Recipient an incentive to continue existing employment.

IN WITNESS WHEREOF, the parties hereto have executed this Agreement as of the date indicated below.

RECIPIENT:	CSX CORPORATION:
/s/ Michael Ward	By: /s/ Lisa Mancini
Michael J. Ward	Lisa A. Mancini
	SVP & Chief Administrative Officer
Date: May 17, 2013

EX-10.29

Exhibit 10.29

RESTRICTED STOCK AWARD AGREEMENT

This Agreement is made and entered into as of May 7, 2013, by and between CSX Corporation (“CSX”), a Virginia corporation, and Fredrik J. Eliasson (the “Recipient”). In consideration of their mutual promises and undertakings, CSX and Recipient mutually agree as follows:

1. Restricted Stock. In consideration of Recipient’s continued and uninterrupted employment with CSX or an Affiliate thereof, for the period from May 7, 2013 through May 6, 2018 (the “Restricted Period”), the Recipient is hereby granted 21,349 shares of restricted CSX Corporation common stock, $1 par value (“CSX Stock”).

2. Vesting. The Restricted Stock shall fully vest on May 6, 2018 upon Recipient’s completion of the Restricted Period, except as provided below in Section 6.

3. Delivery of Shares. Payment of vested Restricted Stock will be paid as soon as practicable after completion of the Restricted Period.

4. Omnibus Plan incorporated by reference. The grant hereunder is made under CSX Stock and Incentive Award Plan (the “Plan”), the provisions of which are hereby incorporated by reference except as otherwise provided specifically herein.

5. Dividend equivalents. During the Restricted Period, CSX will pay to Recipient, based upon the number of restricted shares granted, an amount equal to dividends (“Dividend Equivalents”) declared and payable on the CSX common stock net of applicable withholding taxes.

6. Termination of Employment. In the event of a termination of Recipient’s employment before the end of the Restricted Period for any reason other than death or disability, the Restricted Stock shall be forfeited. In the event of a termination of Recipient’s employment before the end of the Restricted Period, by reason of Recipient’s death or disability, pro rata vesting shall apply. The pro rata computation will be determined based upon the number of months of employment completed during the Restricted Period. “Disability” shall mean the Recipient’s becoming disabled within the meaning of the long-term disability plan of the Company covering the Recipient.

Restricted Stock granted to the Recipient that does not vest under the terms of this Agreement shall be forfeited.

7. Withholding of Tax. Recipient shall be solely responsible for any and all federal, state, and local taxes which may be imposed on the Recipient as a result of the vesting of the Restricted Stock, the receipt of CSX Stock, and receipt of dividend equivalents. CSX is required to withhold income taxes at the prescribed supplemental income and employment tax rates at the time such taxes are due. Upon issuance of CSX stock, CSX will withhold the minimum number of whole shares equal in value to such required withholding amount. No additional voluntary withholding amount is permitted.

8. Assignment of Restricted Stock Prohibited. The Restricted Stock may not be sold, assigned, pledged, exchanged, hypothecated or otherwise transferred, encumbered or disposed of.

9. Not a Contract of Employment. Nothing in this Agreement shall be interpreted or construed to create a contract of employment between the Company and the Recipient. This Agreement is intended solely to provide Recipient an incentive to continue existing employment.

IN WITNESS WHEREOF, the parties hereto have executed this Agreement as of the date indicated below.

RECIPIENT:	CSX CORPORATION:
/s/ Fredrik J. Eliasson	By: /s/ Michael Ward
Fredrik J. Eliasson	Michael J. Ward
	Chairman, President, and Chief Executive Officer
Date: May 17, 2013

EX-10.30

Exhibit 10.30

RESTRICTED STOCK UNIT GRANT AGREEMENT

This restricted stock unit Agreement is made and entered into as of May 7, 2013, by and between CSX Corporation (“CSX”), a Virginia corporation, and Clarence W. Gooden (the “Recipient”). CSX grants restricted stock units (“RSUs”) to encourage a long-term perspective and commitment from its employees.

In consideration of their mutual promises and undertakings, CSX and Recipient mutually agree as follows:

1. Award. In consideration of Recipient’s continued and uninterrupted employment with CSX, or an Affiliate thereof, for the period from May 7, 2013 through May 6, 2016 (the “Restricted Period”), the Recipient is hereby granted 21,349 RSUs wherein each unit represents one share of CSX Corporation common stock, $1 par value (“CSX Stock”).

2. Vesting. The RSUs shall fully vest upon Recipient’s completion of the Restricted Period, except as provided below in Section 6.

3. Settlement and Delivery of Shares with Holding Period. Payment of vested RSUs will be paid as soon as practicable after completion of the Restricted Period in the form of CSX Stock. Such shares may not be sold for a period of one year following receipt with the following exceptions: (i) after the Recipient terminates employment, (ii) for payment by Recipient of applicable withholding taxes, (iii) where Recipient sells shares in connection with a change in control event as defined by the CSX Stock and Incentive Award Plan, and (iv) a person or entity that acquires the shares from the Recipient by will or the laws of descent and distribution.

4. CSX Stock and Incentive Award Plan. The grant hereunder is made under the CSX Stock and Incentive Award Plan (the “Plan”), the provisions of which are hereby incorporated by reference except as otherwise provided specifically herein.

5. Dividend Equivalents. During the Restricted Period, CSX will pay to Recipient, based upon the number of RSUs granted, an amount equal to dividends (“Dividend Equivalents”) declared and payable on CSX Stock net of applicable withholding taxes.

6. Termination of Employment. In the event of a termination of Recipient’s employment before the end of the Restricted Period for any reason other than death, disability or retirement, all RSUs shall be forfeited. In the event of a termination of Recipient’s employment before the end of the Restricted Period, by reason of Recipient’s death or disability, full and immediate vesting shall apply, and CSX Stock shall be awarded as soon as practicable following such event. In the event of a termination of Recipient’s employment before the end of the Restricted Period by reason of retirement, pro rata vesting shall apply, and CSX Stock shall be awarded in December of the year in which such retirement occurs. The pro rata computation will be determined based upon the number of months of employment completed during the Restricted Period. 

For purposes of this Agreement, “retirement” shall mean the attainment of age 55 and 10 years of service with the Company or an Affiliate, or attainment of age 65. “Disability” shall mean the Recipient’s becoming disabled within the meaning of the long-term disability plan of the Company covering the Recipient.

Any RSUs granted to the Recipient that do not vest under the terms of this Agreement shall be forfeited.

7. Withholding of Tax. Recipient shall be solely responsible for any and all federal, state, and local taxes which may be imposed on the Recipient as a result of the vesting of the RSU grant, the receipt of CSX Stock, and receipt of dividend equivalents. CSX is required to withhold income taxes at the prescribed supplemental income and employment tax rates at the time such taxes are due. Upon issuance of CSX stock, CSX will withhold the minimum number of whole shares equal in value to such required withholding amount. No additional voluntary withholding amount is permitted.

8. Assignment of Restricted Stock Units Prohibited. The RSUs may not be sold, assigned, pledged, exchanged, hypothecated or otherwise transferred, encumbered or disposed of.

9. Shareholder Rights. The RSUs shall confer no other shareholder rights upon the Recipient except as provided herein unless and until such time as the award has been settled by the transfer of CSX Stock to the Recipient.

10. Not a Contract of Employment. Nothing in this Agreement shall be interpreted or construed to create a contract of employment between the Company and the Recipient. This Agreement is intended solely to provide Recipient an incentive to continue existing employment.

IN WITNESS WHEREOF, the parties hereto have executed this Agreement as of the date indicated below.

RECIPIENT:	CSX CORPORATION:
/s/ Clarence W. Gooden	By: /s/ Michael Ward
Clarence W. Gooden	Michael J. Ward
	Chairman, President and Chief Executive Officer
Date: May 17, 2013

EX-21

Exhibit 21

Subsidiaries of the Registrant

As of December 27, 2013, the Registrant was the beneficial owner of 100% of the common stock of the following significant subsidiaries:

CSX Transportation, Inc. (a Virginia corporation)

As of December 27, 2013, none of the other subsidiaries included in the Registrant's consolidated financial statements constitute a significant subsidiary.

EX-23

Exhibit 23

Consent of Independent Registered Public Accounting Firm

We consent to the incorporation by reference in the following Registration Statements:

Registration Statement (Form S-3ASR No. 333-186715)

)

Registration Statement (Form S-8 No. 333-110589)

Registration Statement (Form S-8 No. 333-160650)

Registration Statement (Form S-8 No. 333-160652)

Registration Statement (Form S-8 No. 333-166769)

Registration Statement (Form S-8 No. 333-193785)

of our reports dated February 12, 2014, with respect to the consolidated financial statements of CSX Corporation, and the effectiveness of internal control over financial reporting of CSX Corporation, included in this Annual Report (Form 10-K) of CSX Corporation for the year ended December 27, 2013.

/s/ Ernst & Young LLP

Jacksonville, Florida

February 12, 2014

EX-24

Exhibit 24

POWER OF ATTORNEY

KNOW ALL PERSONS BY THESE PRESENTS that each of the undersigned directors of CSX CORPORATION, a Virginia Corporation, which is to file with the Securities and Exchange Commission, Washington, D. C., a Form 10‑K for fiscal year ended December 27, 2013 hereby constitutes and appoints Carolyn T. Sizemore and Ellen M. Fitzsimmons his/her true and lawful attorneys‑in‑fact and agents, for him/her and in his/her name, place and stead to sign said Form 10‑K, and any and all amendments thereto, with power where appropriate to affix the corporate seal of CSX Corporation thereto and to attest said seal, and to file said Form 10‑K, and any and all other documents in connection therewith, with the Securities and Exchange Commission, hereby granting unto said attorneys‑in‑fact and agents, and each of them, full power and authority to do and perform any and all acts and things requisite and necessary to be done in and about the premises as fully to all intents and purposes as he/she might or could do in person, hereby ratifying and confirming all that said attorneys‑in‑fact and agents, or either of them, may lawfully do or cause to be done by virtue hereof.

/s/ DONNA M. ALVARADO	/s/ TIMOTHY T. O'TOOLE
Donna M. Alvarado	Timothy T. O'Toole
February 12, 2014	February 12, 2014
/s/ JOHN B. BREAUX	/s/ DAVID M. RATCLIFFE
John B. Breaux	David M. Ratcliffe
February 12, 2014	February 12, 2014
/s/ PAMELA L. CARTER	/s/ DONALD J. SHEPARD
Pamela L. Carter	Donald J. Shepard
February 12, 2014	February 12, 2014
/s/ STEVEN T. HALVERSON	/s/ MICHAEL J. WARD
Steven T. Halverson	Michael J. Ward
February 12, 2014	February 12, 2014
/s/ EDWARD J. KELLY, III	/s/ J.C. WATTS, JR.
Edward J. Kelly, III	J.C. Watts, Jr.
February 12, 2014	February 12, 2014
/s/ GILBERT H. LAMPHERE	/s/ J. STEVEN WHISLER
Gilbert H. Lamphere	J. Steven Whisler
February 12, 2014	February 12, 2014
/s/ JOHN D. McPHERSON
John D. McPherson
February 12, 2014

EX-31

Exhibit 31

CERTIFICATION OF CEO AND CFO PURSUANT TO EXCHANGE ACT RULE

13a - 14(a) OR RULE 15d-14(a)

I, Michael J. Ward, certify that:

1. I have reviewed this Annual Report on Form 10-K of CSX 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.

Date: February 10, 2014

/s/ MICHAEL J. WARD

Michael J. Ward

Chairman, President and Chief Executive Officer

I, Fredrik J. Eliasson, certify that:

1. I have reviewed this Annual Report on Form 10-K of CSX Corporation;

2. 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;

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.

Date: February 10, 2014

/s/ FREDRIK J. ELIASSON

Fredrik J. Eliasson

Executive Vice President and Chief Financial Officer

EX-32

Exhibit 32

CERTIFICATION OF CEO AND CFO REQUIRED BY RULE 13a-14(b) OR RULE 15D-14(b) AND SECTION 1350 OF CHAPTER 63 OF TITLE 18 OF THE U.S. CODE

In connection with the Annual Report of CSX Corporation on Form 10-K for the fiscal year ended December 27, 2013 as filed with the Securities and Exchange Commission on the date hereof (the "Report"), I, Michael J. Ward, Chief Executive Officer of the registrant, certify, pursuant to 18 U.S.C. 1350, as adopted pursuant to Section 906 of the Sarbanes-Oxley Act of 2002, to my knowledge, that:

1. The Report fully complies with the requirements of section 13(a) or 15(d) of the Securities Exchange Act of 1934; and

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

Date: February 10, 2014

/s/ MICHAEL J. WARD

Michael J. Ward

Chairman, President and Chief Executive Officer

In connection with the Annual Report of CSX Corporation on Form 10-K for the fiscal year ended December 27, 2013 as filed with the Securities and Exchange Commission on the date hereof (the "Report"), I, Fredrik J. Eliasson, Chief Financial Officer of the registrant, certify, pursuant to 18 U.S.C. 1350, as adopted pursuant to Section 906 of the Sarbanes-Oxley Act of 2002, to my knowledge, that:

1. The Report fully complies with the requirements of section 13(a) or 15(d) of the Securities Exchange Act of 1934; and

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

Date: February 10, 2014

/s/ FREDRIK J. ELIASSON

Fredrik J. Eliasson

Executive Vice President and Chief Financial Officer

EX-99

Exhibit 99

Form Last Updated by the NYSE on January 4, 2010

NYSE Regulation

Domestic Company

Section 303A

Annual CEO Certification

As the Chief Executive Officer of CSX Corporation (CSX), and as required by Section 303A.12(a) of the New York Stock Exchange Listed Company Manual, I hereby certify that as of the date hereof I am not aware of any violation by the Company of NYSE's corporate governance listing standards, other than has been notified to the Exchange pursuant to Section 303A.12(b) and disclosed on Exhibit H to the Company's Domestic Company Section 303A Annual Written Affirmation.

This certification is:

      [x]         Without qualification

                                  or  

     [   ]         With qualification

By: /s/ MICHAEL WARD

Print Name: Michael Ward

Title: Chairman of the Board, President and Chief Executive Officer

Date: June 3, 2013

Note: THE NYSE WILL NOT ACCEPT IF RETYPED, MODIFIED OR IF ANY TEXT IS DELETED. If you have any questions regarding applicability to your Company's circumstances, please call the Corporate Governance department prior to submission.

Date Submitted: June 3, 2013

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Other Comprehensive Income (Tables)

12 Months Ended

Dec. 27, 2013

Equity [Abstract]

Changes in the AOCI balance by component

Changes in the AOCI balance by component are shown in the table below.

	Pension and Other Post-Employment Benefits			Other (a)			Accumulated Other Comprehensive Income (Loss)
(Dollars in millions)
Balance December 31, 2010, Net of Tax	$	(711	)	$	(60	)	$	(771	)
Other Comprehensive Loss
Loss Before Reclassifications	(216		)	(13		)	(229		)
Amounts Reclassified to Net Earnings(b)	75			(1		)	74
Tax (Expense) Benefit	53			(2		)	51
Total Other Comprehensive Loss	(88		)	(16		)	(104		)
Balance December 30, 2011, Net of Tax	(799		)	(76		)	(875		)
Other Comprehensive Loss
Loss Before Reclassifications	(172		)	(9		)	(181		)
Amounts Reclassified to Net Earnings(b)	88			(1		)	87
Tax Benefit	32			1			33
Total Other Comprehensive Loss	(52		)	(9		)	(61		)
Balance December 28, 2012, Net of Tax	(851		)	(85		)	(936		)
Other Comprehensive Loss
Income Before Reclassifications	510			24			534
Amounts Reclassified to Net Earnings(b)	111			(2		)	109
Tax (Expense) Benefit	(232		)	2			(230		)
Total Other Comprehensive Income	389			24			413
Balance December 27, 2013, Net of Tax	$	(462	)	$	(61	)	$	(523	)

^(a) Other primarily represents CSX's share of AOCI of equity method investees. Amounts reclassified to net earnings are included in other income - net on the consolidated income statements.

^(b) Amounts reclassified to net earnings primarily relate to the amortization of actuarial losses and are included in labor and fringe on the consolidated income statements. See Note 8. Employee Benefit Plans for further information.

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Casualty, Environmental and Other Reserves (Loss Contingencies Roll Forward) (Details) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 27, 2013	Dec. 28, 2012	Dec. 30, 2011
Casualty Reserves [Member]
Loss Contingency Accrual [Roll Forward]
Balance at beginning of period	$ 325	$ 372	$ 375
Charged to Expense	54	51	68
Payments	(99)	(98)	(71)
Balance end of period	280	325	372
Environmental Reserves [Member]
Loss Contingency Accrual [Roll Forward]
Balance at beginning of period	88	83	107
Charged to Expense	48	35	23
Payments	(36)	(30)	(47)
Balance end of period	100	88	83
Other Reserves [Member]
Loss Contingency Accrual [Roll Forward]
Balance at beginning of period	64	64	59
Charged to Expense	38	36	41
Payments	(31)	(36)	(36)
Balance end of period	71	64	64
Casualty, Environmental and Other [Member]
Loss Contingency Accrual [Roll Forward]
Balance at beginning of period	477	519	541
Charged to Expense	140	122	132
Payments	(166)	(164)	(154)
Balance end of period	$ 451	$ 477	$ 519

XML

Stock Plans and Share-Based Compensation (Details) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 27, 2013	Dec. 28, 2012	Dec. 30, 2011
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]
Net financing cash flows	$ 13	$ 37	$ 35
Share-Based Compensation Expense	14	14	30
Income Tax Benefit	$ 6	$ 5	$ 11

XML

Employee Benefit Plans (Amounts Recoreded in Consolidated Balance Sheets) (Details) (USD $) In Millions, unless otherwise specified	Dec. 27, 2013		Dec. 28, 2012
Pension Plan, Defined Benefit [Member]
Amounts Recorded in Consolidated Balance Sheets [Abstract]
Long-term Assets	$ 44	[1]	$ 3	[1]
Current Liabilities	(14)		(15)
Long-term Liabilities	(209)		(648)
Net Amount Recognized in Consolidated Balance Sheet	(179)		(660)
Other Postretirement Benefit Plan, Defined Benefit [Member]
Amounts Recorded in Consolidated Balance Sheets [Abstract]
Long-term Assets	0		0
Current Liabilities	(38)		(41)
Long-term Liabilities	(312)		(374)
Net Amount Recognized in Consolidated Balance Sheet	$ (350)		$ (415)

[1] Long-term assets relate to two of the qualified pension plans whose assets exceed projected benefit obligations.

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Casualty, Environmental and Other Reserves (Loss Contingencies Accrual) (Details) (USD $) In Millions, unless otherwise specified	Dec. 27, 2013	Dec. 28, 2012	Dec. 30, 2011	Dec. 31, 2010
Casualty [Member]
Contingencies [Line Items]
Loss Contingency, Accrual, Current	$ 72	$ 88
Loss Contingency, Accrual, Noncurrent	208	237
Loss Contingency Accrual	280	325	372	375
Personal Injury [Member]
Contingencies [Line Items]
Loss Contingency, Accrual, Current	59	75
Loss Contingency, Accrual, Noncurrent	148	158
Loss Contingency Accrual	207	233
Occupational [Member]
Contingencies [Line Items]
Loss Contingency, Accrual, Current	3	5
Loss Contingency, Accrual, Noncurrent	20	31
Loss Contingency Accrual	23	36
Asbestos [Member]
Contingencies [Line Items]
Loss Contingency, Accrual, Current	10	8
Loss Contingency, Accrual, Noncurrent	40	48
Loss Contingency Accrual	50	56
Environmental [Member]
Contingencies [Line Items]
Loss Contingency, Accrual, Current	59	33
Loss Contingency, Accrual, Noncurrent	41	55
Loss Contingency Accrual	100	88	83	107
Other [Member]
Contingencies [Line Items]
Loss Contingency, Accrual, Current	20	19
Loss Contingency, Accrual, Noncurrent	51	45
Loss Contingency Accrual	71	64	64	59
Casualty, Environmental and Other [Member]
Contingencies [Line Items]
Loss Contingency, Accrual, Current	151	140
Loss Contingency, Accrual, Noncurrent	300	337
Loss Contingency Accrual	$ 451	$ 477	$ 519	$ 541

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Debt and Credit Agreements (Debt Issuance) (Details) (Notes Payable [Member], Note Due 2023 at 3 Point 7 Percent [Member], USD $) In Millions, unless otherwise specified	Dec. 27, 2013
Notes Payable [Member] | Note Due 2023 at 3 Point 7 Percent [Member]
Debt Instrument [Line Items]
Face amount of debt issued	$ 500
Notes issued, interest rate	3.70%

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Earnings Per Share (Details) (USD $)	3 Months Ended												12 Months Ended
	Dec. 27, 2013	Sep. 27, 2013	Jun. 28, 2013	Mar. 29, 2013	Dec. 30, 2012	Sep. 28, 2012	Jun. 29, 2012	Mar. 30, 2012	Dec. 30, 2011	Sep. 30, 2011	Jul. 01, 2011	Apr. 01, 2011	Dec. 27, 2013		Dec. 28, 2012		Dec. 30, 2011
Numerator:
Net Earnings	$ 426,000,000	$ 455,000,000	$ 521,000,000	$ 462,000,000	$ 449,000,000	$ 437,000,000	$ 496,000,000	$ 481,000,000	$ 483,000,000	$ 463,000,000	$ 502,000,000	$ 406,000,000	$ 1,864,000,000		$ 1,863,000,000	[1]	$ 1,854,000,000	[1]
Dividend Equivalents on Restricted Stock													1,000,000		1,000,000	[1]	1,000,000	[1]
Net Earnings, Attributable to Common Shareholders													1,865,000,000		1,864,000,000	[1]	1,855,000,000	[1]
Denominator:
Average Common Shares Outstanding													1,019,000,000		1,038,000,000	[1]	1,083,000,000	[1]
Other Potentially Dilutive Common Shares													0	[2]	2,000,000	[1],[2]	6,000,000	[1],[2]
Average Common Shares Outstanding, Assuming Dilution													1,019,000,000		1,040,000,000	[1]	1,089,000,000	[1]
Net Earnings Per Share, Basic (dollars per share)	$ 0.42	$ 0.45	$ 0.51	$ 0.45	$ 0.44	$ 0.42	$ 0.48	$ 0.46	$ 0.46	$ 0.43	$ 0.46	$ 0.37	$ 1.83		$ 1.80	[1]	$ 1.71	[1]
Net Earnings Per Share, Assuming Dilution (dollars per share)	$ 0.42	$ 0.45	$ 0.51	$ 0.45	$ 0.44	$ 0.42	$ 0.48	$ 0.46	$ 0.46	$ 0.43	$ 0.45	$ 0.36	$ 1.83		$ 1.79	[1]	$ 1.70	[1]
Number of stock options excluded from the diluted earnings per share													0
Convertible Debt [Member]
Denominator:
Face value of convertible debentures													7,000		2,000,000
Face value of convertible debentures still outstanding at the end of the period	$ 2,000,000												$ 2,000,000
Common Stock [Member]
Denominator:
Number of shares of common stock converted from convetible debentures													1,000		155,000
Number of shares of common stock converted from outstanding convetible debentures													244,000

[1] See the revision of prior period financial statements in Note 1. Nature of Operations and Significant Accounting Policies.

[2] Other potentially dilutive common shares include convertible debt, stock options, common stock equivalents and performance units granted under a long-term management incentive compensation plan.

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Employee Benefit Plans (Tables)

12 Months Ended

Dec. 27, 2013

Defined Benefit Plans and Other Postretirement Benefit Plans Disclosures [Abstract]

Schedule of summary of participants

The Company engages independent, external actuaries to compute the amounts of liabilities and expenses related to these plans subject to the assumptions that the Company selects. In order to perform this valuation, the actuaries are provided with the details of the population covered at the beginning of the year, summarized in the table below, and projects that population forward to the end of the year.

NOTE 8. Employee Benefit Plans, continued

	Summary of Participants as of
	January 1, 2013
	Pension Plans	Post-retirement Medical Plan
Active Employees	5,153	2,176
Retirees and Beneficiaries	11,569	12,277
Other(a)	5,715	112
Total	22,437	14,565

(a) For pension plans, the other category consists mostly of terminated but vested former employees.  For post-retirement plans, the other category consists of employees on long-term disability that have not yet retired.

Schedule of future expected benefit payments

Future expected benefit payments are as follows:

	Expected Cash Flows
(Dollars in Millions)	Pension Benefits		Post-retirement Benefits
2014	$	167	$	38
2015	171		36
2016	173		34
2017	176		32
2018	179		31
2019-2023	910		126
Total	$	1,776	$	297

Schedule of allocation of plan assets

The distribution of pension plan assets as of the measurement date is shown in the table below, and these assets are netted against the pension liabilities on the balance sheet.

	December 2013				December 2012
			Percent of				Percent of
(Dollars in Millions)	Amount		Total Assets		Amount		Total Assets
Equity	$	1,619	65	%	$	1,408	61	%
Fixed Income	795		32		829		36
Cash and Cash Equivalents	86		3		57		3
Total	$	2,500	100	%	$	2,294	100	%

Schedule of changes in benefit obligation and fair value of plan assets

Changes in benefit obligation and the fair value of plan assets for the 2013 and 2012 calendar plan years are as follows:

	Pension Benefits						Post-retirement Benefits
	Plan Year			Plan Year			Plan Year			Plan Year
(Dollars in Millions)	2013			2012			2013			2012
Actuarial Present Value of Benefit Obligation
Accumulated Benefit Obligation	$	2,538		$	2,806		N/A			N/A
Projected Benefit Obligation	2,679			2,954			$	350		$	415
Change in Projected Benefit Obligation:
Projected Benefit Obligation atBeginning of Plan Year	$	2,954		$	2,668		$	415		$	388
Service Cost	49			44			3			4
Interest Cost	108			123			13			16
Plan Participants' Contributions	—			—			8			8
Plan Amendments	—			—			—			(1		)
Actuarial (Gain) Loss	(275		)	274			(49		)	43
Benefits Paid	(157		)	(155		)	(40		)	(43		)
Benefit Obligation at End of Plan Year	$	2,679		$	2,954		$	350		$	415
Change in Plan Assets:
Fair Value of Plan Assets at Beginning of Plan Year	$	2,294		$	1,850		$	—		$	—
Actual Return on Plan Assets	350			311			—			—
Qualified Employer Contributions	—			275			—			—
Non-qualified Employer Contributions	13			13			32			35
Plan Participants' Contributions	—			—			8			8
Benefits Paid	(157		)	(155		)	(40		)	(43		)
Fair Value of Plan Assets at End of Plan Year	2,500			2,294			—			—
Funded Status at End of Plan Year	$	(179	)	$	(660	)	$	(350	)	$	(415	)

Schedule of amount recognized in balance sheet

Amounts related to pension and post-retirement benefits recorded in other long-term assets, labor and fringe benefits payable and other long-term liabilities on the balance sheet are as follows:

	Pension Benefits						Post-retirement Benefits
	December			December			December			December
(Dollars in Millions)	2013			2012			2013			2012
Amounts Recorded in Consolidated
Balance Sheets:
Long-term Assets (a)	$	44		$	3		$	—		$	—
Current Liabilities	(14		)	(15		)	(38		)	(41		)
Long-term Liabilities	(209		)	(648		)	(312		)	(374		)
Net Amount Recognized in
Consolidated Balance Sheet	$	(179	)	$	(660	)	$	(350	)	$	(415	)

(a) Long-term assets relate to two of the qualified pension plans whose assets exceed projected benefit obligations.

Benefit obligations in excess of plan assets

At December 2013, the status of CSX plans only with a net liability is disclosed below. The total fair value of all plans as of December 2013 was $2.5 billion, which includes the qualified pension plans with net assets.

	Aggregate		Aggregate
(Dollars in Millions)	Fair Value		Projected
Benefit Obligations in Excess of Plan Assets	of Plan Assets		Benefit Obligation
Projected Benefit Obligation	$	69	$	(292	)
Accumulated Benefit Obligation	69		(280		)

Schedule of net benefit expense

The following table describes the components of expense/(income) related to net benefit expense recorded in labor and fringe on the income statement.

	Pension Benefits Fiscal Years									Post-retirement Benefits Fiscal Years
(Dollars in Millions)	2013			2012			2011			2013			2012			2011
Service Cost	$	49		$	44		$	40		$	3		$	4		$	2
Interest Cost	108			123			121			13			16			11
Expected Return on Plan Assets	(162		)	(166		)	(157		)	—			—			—
Amortization of Net Loss	100			82			71			14			9			7
Amortization of Prior Service Cost	—			—			—			(1		)	(1		)	(1		)
Net Periodic Benefit Expense	95			83			75			29			28			19
Settlement Gain(a)	(2		)	(2		)	(2		)	—			—			—
Total Expense	$	93		$	81		$	73		$	29		$	28		$	19

(a) Settlement gains were recognized as one of the pension plan's lump-sum payments exceeded the sum of the service cost and interest cost recognized.  The gain is the recognition of a portion of its accumulated other comprehensive income related to that plan

Schedule of pre-tax change in other comprehensive loss (income)

The following table shows the pre-tax change in other comprehensive loss (income) attributable to the components of net expense and the change in benefit obligation for CSX for pension and other post-employment benefits.

(Dollars in Millions)	Pension Benefits						Post-retirement Benefits
Components of Other Comprehensive	December			December			December			December
Loss (Income)	2013			2012			2013			2012
Recognized in the balance sheet
(Gains) Losses	$	(462	)	$	130		$	(48	)	$	43
Prior service credits	—			—			—			(1		)
Expense (Income) recognized in the income statement
Amortization of net losses (a)	$	100		$	82		$	14		$	9
Settlement gain	(2		)	(2		)	—			—
Amortization of prior service costs (b)	—			—			(1		)	(1		)

(a) Amortization of net losses estimated to be expensed for 2014 is $57 million and $6 million for pension benefits and post-retirement benefits, respectively. The decrease in amortization is largely related to the impact of increasing discount rates.

(b) Amortization of prior service costs estimated to be expensed in 2014 are less than $1 million for pension benefits. The estimated post-retirement benefits amount to be credited to expense for 2014 is $1 million.

Schedule of pre-tax amounts to be amortized that included in accumulated other comprehensive loss

As of December 2013, the balances of pre-tax amounts to be amortized that are included in accumulated other comprehensive loss (a component of shareholders’ equity) are as follows:

	Pension Benefits		Post-retirement Benefits
Losses	$	658	$	73
Prior Service Costs (Credits)	1		(3		)
Total	$	659	$	70

Schedule of weighted-average assumptions used

Weighted-average assumptions used in accounting for the plans were as follows:

	Pension Benefits				Post-retirement Benefits
	2013		2012		2013		2012
Expected Long-term Return on Plan Assets:
Benefit Cost for Plan Year	7.75	%	8.00	%	N/A		N/A
Benefit Obligation at End of Plan Year	7.50	%	7.75	%	N/A		N/A
Discount Rates:
Benefit Cost for Plan Year	3.75	%	4.75	%	3.20	%	4.25	%
Benefit Obligation at End of Plan Year	4.75	%	3.75	%	4.25	%	3.20	%
Salary Scale Inflation	3.75	%	3.75	%	N/A		N/A

Schedule of health care cost trend rates

Additionally, there are cost differentials between Medicare and Non-Medicare eligible individuals which are reflected below.

	Post-retirement Benefits
	2013	2012
Health Care Cost Trend Rate:
Components of Benefit Cost:  Non-Medicare Eligible	8.5%	8.5%
Components of Benefit Cost:  Medicare Eligible	8.0%	8.0%
Benefit Obligations:  Non-Medicare Eligible	8.0%	8.5%
Benefit Obligations:  Medicare Eligible	7.5%	8.0%

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Debt and Credit Agreements (Long-term Debt Maturities) (Details) (USD $) In Millions, unless otherwise specified	Dec. 27, 2013		Dec. 28, 2012
Maturities of Long-term Debt [Abstract]
2014	$ 533	[1]	$ 780	[1]
2015	629
2016	22
2017	631
2018	619
Thereafter	7,121
Total Long-term Debt Maturities (including current portion)	$ 9,555		$ 9,832

[1] See the revision of prior period financial statements in Note 1. Nature of Operations and Significant Accounting Policies.

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Employee Benefit Plans (Pension and Other Post-Employment Benefits Adjustments) (Details) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 27, 2013		Dec. 28, 2012		Dec. 30, 2011
Pension Plan, Defined Benefit [Member]
Components of other comprehensive loss (income) [Abstract]
(Gains) Losses	$ (462)		$ 130
Prior service credits	0		0
Expense (Income) recognized in income statement [Abstract]
Amortization of net losses	100	[1]	82	[1]	71
Settlement gain	(2)	[2]	(2)	[2]	(2)	[2]
Amortization of prior service cost	0	[3]	0	[3]	0
Estimated amount to be expensed in the future period	57
Remaining prior service costs to be expensed in future period	1
Pension and Other Postretirement Benefit Plans, Accumulated Other Comprehensive Income (Loss), before Tax [Abstract]
Losses	658
Prior Service Costs (Credits)	1
Total	659
Other Postretirement Benefit Plan, Defined Benefit [Member]
Components of other comprehensive loss (income) [Abstract]
(Gains) Losses	(48)		43
Prior service credits	0		(1)
Expense (Income) recognized in income statement [Abstract]
Amortization of net losses	14	[1]	9	[1]	7
Settlement gain	0	[2]	0	[2]	0	[2]
Amortization of prior service cost	(1)	[3]	(1)	[3]	(1)
Estimated amount to be expensed in the future period	6
Remaining prior service costs to be expensed in future period	1
Pension and Other Postretirement Benefit Plans, Accumulated Other Comprehensive Income (Loss), before Tax [Abstract]
Losses	73
Prior Service Costs (Credits)	(3)
Total	$ 70

[1] Amortization of net losses estimated to be expensed for 2014 is $57 million and $6 million for pension benefits and post-retirement benefits, respectively. The decrease in amortization is largely related to the impact of increasing discount rates.

[2] Settlement gains were recognized as one of the pension plan's lump-sum payments exceeded the sum of the service cost and interest cost recognized. The gain is the recognition of a portion of its accumulated other comprehensive income related to that plan.

[3] Amortization of prior service costs estimated to be expensed in 2014 are less than $1 million for pension benefits. The estimated post-retirement benefits amount to be credited to expense for 2014 is $1 million.

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Related Party Transactions (Consolidated Income Statements Components) (Details) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 27, 2013	Dec. 28, 2012	Dec. 30, 2011
Related Party Amounts Consolidated Income Statements [Abstract]
Equity in Income of Conrail	$ 0	$ 0	$ 0
Corporate Joint Venture [Member] | Materials, Supplies and Other [Member]
Related Party Amounts Consolidated Income Statements [Abstract]
Rents, Fees, and Services	115	139	111
Purchase Price Amortization and Other	4	4	4
Equity in Income of Conrail	(35)	(26)	(24)
Total Related Party Rents Fees And Services	$ 84	$ 117	$ 91

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Casualty, Environmental and Other Reserves (Occupational and Asbestos Claims) (Details) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 27, 2013 claims	Dec. 28, 2012 claims
Occupational Casualty and Asbestos Issues [Member]
Loss Contingencies [Line Items]
Change in estimate recorded to adjust reserves	$ 0
Loss Contingency, Claims Quantities [Roll Forward]
Open Claims - Beginning of Year	523	746
New Claims Filed	165	160
Claims Settled	(146)	(154)
Claims Dismissed	(150)	(229)
Open Claims - End of Year	392	523
Occupational [Member]
Loss Contingencies [Line Items]
Time period for estimating probable claims (in years)	7 years
Total liability	23	36
Occupational [Member] | Incurred but not reported claims [Member]
Loss Contingencies [Line Items]
Incurred but not reported claims	15	24
Occupational [Member] | Asserted claims [Member]
Loss Contingencies [Line Items]
Asserted claims	8	12
Asbestos [Member]
Loss Contingencies [Line Items]
Total liability	50	56
Asbestos [Member] | Incurred but not reported claims [Member]
Loss Contingencies [Line Items]
Incurred but not reported claims	35	37
Asbestos [Member] | Asserted claims [Member]
Loss Contingencies [Line Items]
Asserted claims	$ 15	$ 19
Carpal Tunnel Claims [Member]
Loss Contingencies [Line Items]
Time period for estimating probable claims (in years)	3 years
Minimum [Member] | Asbestos [Member]
Loss Contingencies [Line Items]
Loss contingency, latency period (in years)	10 years
Maximum [Member] | Asbestos [Member]
Loss Contingencies [Line Items]
Loss contingency, latency period (in years)	40 years

XML

Employee Benefit Plans (Medicare Prescription Drug and Other Plans) (Details) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 27, 2013	Dec. 28, 2012	Dec. 30, 2011
Defined Benefit Plan Disclosure [Line Items]
Amount of premium expenses incurred under the plan	$ 41	$ 46	$ 48
Expense associated with savings plans	$ 37	$ 29	$ 28

XML

Income Taxes (Income Taxes Uncertainties) (Details) (USD $) In Millions, unless otherwise specified	Dec. 27, 2013	Dec. 28, 2012	Dec. 30, 2011
Income Tax Uncertainties [Abstract]
Reduction (Increase) to income tax reserves due to interest and penalties of prior year tax positions	$ 1	$ 8	$ (1)
Previously recorded liabilities for interest and penalties of prior period tax audits	$ 2	$ 3	$ 11

XML

Other Income - Net (Details) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 27, 2013	Dec. 28, 2012		Dec. 30, 2011
Other Income and Expenses [Abstract]
Interest Income	$ 8	$ 5		$ 5
Income from Real Estate Operations	23	81		25
Miscellaneous Expense	(20)	(13)		(8)
Other Income - Net	11	73	[1]	22	[1]
Gross Revenue from Real Estate Operations included above	$ 48	$ 106		$ 51

[1] See the revision of prior period financial statements in Note 1. Nature of Operations and Significant Accounting Policies.

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Related Party Transactions (Narrative) (Details) (Corporate Joint Venture [Member], USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 27, 2013	Dec. 28, 2012	Dec. 30, 2011
Related Party Transaction [Line Items]
Difference between carrying amount and underlying equity	$ 362
Interest expense	$ 4	$ 4	$ 4
Economic interest in related party which is also an equity method investment [Member]
Related Party Transaction [Line Items]
Percentage Economic Interest In Related Party	42.00%
Voting interest in related party which is also an equity method investment [Member]
Related Party Transaction [Line Items]
Percentage Economic Interest In Related Party	50.00%

XML

Debt and Credit Agreements (Long-term Debt Instruments) (Details) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 27, 2013		Dec. 28, 2012
Debt Instrument [Line Items]
Total Long-term Debt Maturities (including current portion)	$ 9,555		$ 9,832
Less Debt Due within One Year	(533)	[1]	(780)	[1]
Long-term Debt (excluding current portion)	9,022	[1]	9,052	[1]
Notes Payable [Member]
Debt Instrument [Line Items]
Average Interest Rates (in hundredths)	5.70%
Total Long-term Debt Maturities (including current portion)	8,935		9,151
Equipment Obligations [Member]
Debt Instrument [Line Items]
Average Interest Rates (in hundredths)	7.30%	[2]
Total Long-term Debt Maturities (including current portion)	602	[2]	667	[2]
Capital Leases [Member]
Debt Instrument [Line Items]
Average Interest Rates (in hundredths)	8.10%
Total Long-term Debt Maturities (including current portion)	16		12
Convertible Debt [Member]
Debt Instrument [Line Items]
Average Interest Rates (in hundredths)	1.00%
Total Long-term Debt Maturities (including current portion)	$ 2		$ 2

[1] See the revision of prior period financial statements in Note 1. Nature of Operations and Significant Accounting Policies.

[2] These obligations are secured by an interest in certain railroad equipment.

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Employee Benefit Plans (Benefit Obligations in Excess of Plan Assets) (Details) (USD $) In Millions, unless otherwise specified	Dec. 27, 2013	Dec. 28, 2012
Defined Benefit Plans and Other Postretirement Benefit Plans Disclosures [Abstract]
Total fair value of all plans	$ 2,500	$ 2,294
Projected Benefit Obligation:
Aggregate Fair Value of Plan Assets	69
Aggregate Projected Benefit Obligation	(292)
Defined Benefit Plan, Pension Plans with Accumulated Benefit Obligations in Excess of Plan Assets [Abstract]
Aggregate Fair Value of Plan Assets	69
Aggregate Projected Benefit Obligation	$ (280)

XML

Nature of Operations and Significant Accounting Policies (Policies)

12 Months Ended

Dec. 27, 2013

Organization, Consolidation and Presentation of Financial Statements [Abstract]

Fiscal Year

CSX follows a 52/53 week fiscal reporting calendar.  This fiscal calendar allows every quarter to consistently end on a Friday and typically, to be of equal duration (13 weeks), resulting in a 52 week fiscal year.  To maintain this type of reporting calendar every fifth or sixth year (depending on the Gregorian calendar and when leap year falls), an extra week will be included in the fourth quarter (a 14-week fiscal quarter) and, therefore, that full fiscal year will have 53 weeks.  The next 53 week fiscal year will be 2016, which will end on December 30, 2016.

Fiscal years 2013, 2012 and 2011 each consisted of 52 weeks ending on December 27, 2013, December 28, 2012 and December 30, 2011, respectively.  Except as otherwise specified, references to full year indicate CSX’s fiscal periods ended on these dates

Principles of Consolidation

The consolidated financial statements include results of operations of CSX and subsidiaries over which CSX has majority ownership or financial control. All significant intercompany accounts and transactions have been eliminated. Most investments in companies that were not majority-owned were carried at cost (if less than 20% owned and the Company has no significant influence) or equity (if the Company has significant influence).

Cash, Cash Equivalents and Short-term Investments

On a daily basis, cash in excess of current operating requirements is invested in various highly liquid investments having a typical maturity date of three months or less at the date of acquisition. These investments were carried at cost, which approximated market value, and were classified as cash equivalents. Investments in instruments with original maturities greater than three months but less than one year were classified as short-term investments.

Allowance for Doubtfull Accounts

The Company maintains an allowance for doubtful accounts on uncollectible amounts related to freight receivables, government reimbursement receivables, claims for damages and other various receivables. The allowance is based upon the credit worthiness of customers, historical experience, the age of the receivable and current market and economic conditions. Uncollectible amounts are charged against the allowance account.

Materials and Supplies

Materials and supplies in the consolidated balance sheets are carried at average costs and consist primarily of fuel and parts used in the repair and maintenance of CSXT’s freight car and locomotive fleets, equipment and track structure.

Goodwill

Goodwill represents purchase price in excess of fair value and is related to affiliates of CSXT, primarily P&L Transportation, Inc. Goodwill of $64 million is recorded in other long-term assets in the consolidated balance sheets as of December 2013 and 2012.

Revenue and Expense Recognition

The Company recognizes freight revenue using Free-On-Board Origin pursuant to the Revenue Recognition Topic in the ASC.  Accounting guidance in this topic provides for the allocation of revenue between reporting periods based on relative transit time in each reporting period.  Expenses are recognized as incurred.

NOTE 1.  Nature of Operations and Significant Accounting Policies, continued

The certain key estimates included in the recognition and measurement of revenue and related accounts receivable under the policies described above are as follows:

• revenue associated with shipments in transit, which are based on historical freight car movement data as well as average cycle times to move commodities and products from their origin to their final destination or interchange;

• adjustments to revenue for billing corrections, billing discounts and bad debts or to accounts receivable for allowances for doubtful accounts;

• adjustments to revenue for overcharge claims filed by customers, which are based on historical cash paid to customers for rate overcharges as a percentage of total billing;

• incentive-based refunds to customers, which are primarily based on customers achieving certain volume thresholds and are recorded as a reduction to revenue on the basis of management’s best estimate of the projected liability  (this estimate is based on historical activity, current volume levels and a forecast of future volume).

The Company regularly updates the estimates described above based on historical experience and current conditions.  All other revenue, such as demurrage, switching and other incidental charges are recorded upon completion of the service. Amounts received for customer volume commitments not met are recorded upon the completion of the contract term.

New Accounting Pronouncements

In February 2013, the Financial Accounting Standards Board ("FASB") issued an Accounting Standards Update to the Comprehensive Income Topic in the Accounting Standards Codifications ("ASC"). This update requires separate presentation of the components that are reclassified out of accumulated other comprehensive income either on the face of the financial statements or in the notes to the financial statements. This update also requires companies to disclose the income statement line items impacted by any significant reclassifications, such as the amortization of pension and other post-employment benefits adjustments. These items are required for both interim and annual reporting for public companies and became effective for CSX beginning with the first quarter 2013 Form 10-Q filing.

Use of Estimates

The preparation of financial statements in conformity with accounting principles generally accepted in the United States requires that management make estimates in reporting the amounts of certain assets and liabilities, the disclosure of contingent assets and liabilities at the date of the financial statements and the reported amount of certain revenues and expenses during the reporting period.  Actual results may differ from those estimates.  Critical accounting estimates using management judgment are made for the following areas:

• casualty, environmental and legal reserves (see Note 5, Casualty, Environmental and Other Reserves);

• pension and post-retirement medical plan accounting (see Note 8, Employee Benefit Plans);

• depreciation policies for assets under the group-life method (see Note 6, Properties); and

• income taxes (see Note 11, Income Taxes).

Other Items - Share Repurchases

In accordance with the Equity Topic in the ASC, the excess of repurchase price over par value is recorded in retained earnings. Generally, retained earnings is only impacted by net earnings and dividends.

Earnings Per Share

Basic earnings per share is based on the weighted-average number of shares of common stock outstanding.  Earnings per share, assuming dilution, is based on the weighted-average number of shares of common stock outstanding adjusted for the effects of common stock that may be issued as a result of the following types of potentially dilutive instruments:

• convertible debt;

• employee stock options; and

• other equity awards, which include long-term incentive awards.

NOTE 2.  Earnings Per Share, continued

The Earnings Per Share Topic in the ASC requires CSX to include additional shares in the computation of earnings per share, assuming dilution.  The additional shares included in diluted earnings per share represent the number of shares that would be issued if all of the above potentially dilutive instruments were converted into CSX common stock.

When calculating diluted earnings per share, the Earnings Per Share Topic in the ASC requires CSX to include the potential shares that would be outstanding if all outstanding stock options were exercised.   This is offset by shares CSX could repurchase using the proceeds from these hypothetical exercises to obtain the common stock equivalent.  This number is different from outstanding stock options, which is included in Note 4, Stock Plans and Share-Based Compensation.

Share-based Compensation Expense

Share-based compensation expense is measured at the fair market value of the Company’s stock on the grant date and is recognized on a straight-line basis over the service period of the respective award. 

Casualty Reserves

In accordance with the Contingencies Topic in the ASC, to the extent the value of an individual claim exceeds the self-insured retention amount, the Company would present the liability on a gross basis with a corresponding receivable for insurance recoveries.  These reserves fluctuate based upon the timing of payments as well as changes in independent third-party estimates, which are reviewed by management.  Actual results may vary from estimates due to the number, type and severity of the injury, costs of medical treatments and uncertainties in litigation. Most of the claims relate to CSXT unless otherwise noted below.  Defense and processing costs, which historically have been insignificant and are anticipated to be insignificant in the future, are not included in the recorded liabilities.

Asset Retirement and Environmental Obligations

In accordance with the Asset Retirement and Environmental Obligations Topic in the ASC, the Company reviews its role with respect to each site identified at least quarterly, giving consideration to a number of factors such as:

• type of clean-up required;

• nature of the Company’s alleged connection to the location (e.g., generator of waste sent to the site or owner or operator of the site);

• extent of the Company’s alleged connection (e.g., volume of waste sent to the location and other relevant factors); and

• number, connection and financial viability of other named and unnamed potentially responsible parties at the location.

Property and Equipment Depreciation

The Company depreciates its rail assets, including main-line track, locomotives and freight cars, using the group-life method of accounting.  Assets depreciated under the group-life method of accounting comprise over 86% of total fixed assets of $37 billion on a gross basis as of December 2013.  All other depreciable assets of the Company are depreciated on a straight-line basis. The group-life method aggregates assets with similar lives and characteristics into groups and depreciates each of these groups as a whole.  When using the group-life method, an underlying assumption is that each group of assets, as a whole, is used and depreciated to the end of its recoverable life.

Impairment Review of Property and Other Long-lived Assets

Properties and other long-lived assets are reviewed for impairment whenever events or business conditions indicate the carrying amount of such assets may not be fully recoverable. Initial assessments of recoverability are based on estimates of undiscounted future net cash flows associated with an asset or a group of assets in accordance with the Property, Plant, and Equipment Topic in the ASC.  Where impairment is indicated, the assets are evaluated and their carrying amount is reduced to fair value based on discounted net cash flows or other estimates of fair value.

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Stock Plans and Share-Based Compensation (Restricted Stock Grants) (Details) (USD $) In Millions, except Share data, unless otherwise specified	12 Months Ended
	Dec. 27, 2013		Dec. 28, 2012		Dec. 30, 2011
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Restricted Stock Unit and Awards Expense	$ 14		$ 14		$ 30
Restricted Stock [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based compensation arrangement, vesting period	5 years
Unrecognized compensation cost	17
Expected weighted average period of recognition for unrecognized compensation cost (in years)	2 years
Number of Restricted Stock Awards Outstanding	1,462,000	[1]	1,353,000	[1]	1,572,000	[1]
Weighted-average fair value at grant date	$ 23.89		$ 21.38		$ 16.91
Restricted Stock Unit and Awards Expense	10	[1]	9	[1]	7	[1]
Unvested Restricted Stock Units and Awards Outstanding	705,000		629,000		678,000
Weighted-Average Fair Value of Unvested Awards Outstanding	$ 24.17		$ 22.48		$ 20.93
Restricted Stock Units (RSUs) [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Performance unit equivalent of CSX stock, in shares	1
Share-based compensation arrangement, vesting period	3 years
Long-term Incentive Plans [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Unrecognized compensation cost	29
Expected weighted average period of recognition for unrecognized compensation cost (in years)	2 years
Weighted-average fair value at grant date	$ 25.24		$ 21.97
Restricted Stock Unit and Awards Expense	$ 2		$ 3		$ 21
Weighted-Average Fair Value of Unvested Awards Outstanding	$ 23.73		$ 23.66		$ 25.92
Long-term Incentive Plans [Member] | Restricted Stock Units (RSUs) [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based compensation arrangement, vesting period	3 years
Time Based Restricted Stock Unit Granted To Key Member Of Management	524,000		433,000		361,000

[1] Time-based restricted stock units were granted to certain employees under the respective Long-term Incentive Plans in the amount of 524,000, 433,000, and 361,000 in 2013, 2012, and 2011, respectively, as described below. These units vest over three years, therefore only a partial amount of expense was recognized in 2013, 2012, and 2011, respectively.

XML

Nature of Operations and Significant Accounting Policies (Business) (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended												12 Months Ended
	Dec. 27, 2013 states mi railroads employees	Sep. 27, 2013	Jun. 28, 2013	Mar. 29, 2013	Dec. 30, 2012	Sep. 28, 2012	Jun. 29, 2012	Mar. 30, 2012	Dec. 30, 2011	Sep. 30, 2011	Jul. 01, 2011	Apr. 01, 2011	Dec. 27, 2013 employees states mi railroads	Dec. 28, 2012		Dec. 30, 2011
Revenue from External Customer [Line Items]
Entity Number of Employees	31,000												31,000
Number of Union Employees													26,000
Total number of rail route miles	21,000												21,000
Rail network states number	23												23
Number of short-line and regional railroads served	240												240
Revenue	$ 3,032	$ 2,985	$ 3,046	$ 2,963	$ 2,895	$ 2,864	$ 2,986	$ 3,018	$ 2,993	$ 2,962	$ 3,013	$ 2,827	$ 12,026	$ 11,763	[1]	$ 11,795	[1]
Minimum [Member]
Revenue from External Customer [Line Items]
Number of ocean, river and lake ports serviced	70												70
Merchandise business [Member]
Revenue from External Customer [Line Items]
Number of carloads													2,800,000
Percentage of total revenue													59.00%
Percentage of total volume													42.00%
Coal business [Member]
Revenue from External Customer [Line Items]
Number of carloads													1,200,000
Percentage of total revenue													24.00%
Percentage of total volume													18.00%
Intermodal business [Member]
Revenue from External Customer [Line Items]
Percentage of total revenue													14.00%
Percentage of total volume													40.00%
Minimum number of terminals	50												50
Other business [Member]
Revenue from External Customer [Line Items]
Percentage of total revenue													3.00%

[1] See the revision of prior period financial statements in Note 1. Nature of Operations and Significant Accounting Policies.

XML

Employee Benefit Plans (Health Care Cost Trend Rates) (Details) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 27, 2013	Dec. 28, 2012
Maximum [Member]
Defined Benefit Plan, Effect of One-Percentage Point Change in Assumed Health Care Cost Trend Rates [Abstract]
Effect of a one percent increase on service and interest costs	$ 1
Effect of a one percent increase on postretirement benefit obligation	$ 1
Other Postretirement Benefit Plan, Defined Benefit [Member]
Defined Benefit Plan, Assumed Health Care Cost Trend Rates [Abstract]
Expected rates assumed in health care costs trend rates for medical plans (in hundreds)	5.00%
Components of Benefit Cost: Non-Medicare Eligible	8.50%	8.50%
Components of Benefit Cost: Medicare Eligible	8.00%	8.00%
Benefit Obligations: Non-Medicare Eligible	8.00%	8.50%
Benefit Obligations: Medicare Eligible	7.50%	8.00%

XML

Summarized Consolidating Financial Data (Cash Flow Statements) (Details) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 27, 2013		Dec. 28, 2012		Dec. 30, 2011
Operating Activities
Net Cash Provided by Operating Activities	$ 3,267		$ 2,946	[1]	$ 3,491	[1]
Investing Activities
Property Additions	(2,313)		(2,341)	[1]	(2,297)	[1]
Purchase of Short-term Investments	(1,256)		(633)	[1]	(492)	[1]
Proceeds from Sales of Short-term Investments	1,401		581	[1]	74	[1]
Proceeds from Property Dispositions	53		186	[1]	240	[1]
Other Investing Activities	(112)		(70)	[1]	(112)	[1]
Net Cash Used in Investing Activities	(2,227)		(2,277)	[1]	(2,587)	[1]
Financing Activities
Long-term Debt Issued	500		1,100	[1]	1,200	[1]
Long-term Debt Repaid	(780)		(508)	[1]	(605)	[1]
Payments of Ordinary Dividends, Common Stock	(600)		(558)	[1]	(480)	[1]
Stock Options Exercised	9		14	[1]	29	[1]
Shares acquired, repurchase amount	(353)		(734)	[1]	(1,564)	[1]
Other Financing Activities	(8)		18	[1]	7	[1]
Net Cash Used in Financing Activities	(1,232)		(668)	[1]	(1,413)	[1]
Net (Decrease) Increase in Cash and Cash Equivalents	(192)		1	[1]	(509)	[1]
Cash and Cash Equivalents at Beginning of Period	784	[1]	783	[1]	1,292	[1]
Cash and Cash Equivalents at End of Period	592	[1]	784	[1]	783	[1]
CSX Corporation
Operating Activities
Net Cash Provided by Operating Activities	1,004		579		1,231
Investing Activities
Property Additions	0		0		0
Purchase of Short-term Investments	(1,251)		(605)		(475)
Proceeds from Sales of Short-term Investments	1,335		525		0
Proceeds from Property Dispositions	0		0		0
Other Investing Activities	(134)		(10)		(20)
Net Cash Used in Investing Activities	(50)		(90)		(495)
Financing Activities
Long-term Debt Issued	500		1,100		1,200
Long-term Debt Repaid	(700)		(400)		(507)
Payments of Ordinary Dividends, Common Stock	(600)		(558)		(480)
Stock Options Exercised	9		14		29
Shares acquired, repurchase amount	(353)		(734)		(1,564)
Other Financing Activities	148		21		35
Net Cash Used in Financing Activities	(996)		(557)		(1,287)
Net (Decrease) Increase in Cash and Cash Equivalents	(42)		(68)		(551)
Cash and Cash Equivalents at Beginning of Period	481		549		1,100
Cash and Cash Equivalents at End of Period	439		481		549
CSX Transportation
Operating Activities
Net Cash Provided by Operating Activities	3,005		2,716		2,746
Investing Activities
Property Additions	(2,053)		(2,104)		(2,034)
Purchase of Short-term Investments	0		0		0
Proceeds from Sales of Short-term Investments	0		0		0
Proceeds from Property Dispositions	53		186		239
Other Investing Activities	(315)		102		(133)
Net Cash Used in Investing Activities	(2,315)		(1,816)		(1,928)
Financing Activities
Long-term Debt Issued	0		0		0
Long-term Debt Repaid	(80)		(106)		(95)
Payments of Ordinary Dividends, Common Stock	(730)		(715)		(680)
Stock Options Exercised	0		0		0
Shares acquired, repurchase amount	0		0		0
Other Financing Activities	(24)		2		(7)
Net Cash Used in Financing Activities	(834)		(819)		(782)
Net (Decrease) Increase in Cash and Cash Equivalents	(144)		81		36
Cash and Cash Equivalents at Beginning of Period	235		154		118
Cash and Cash Equivalents at End of Period	91		235		154
Eliminations and Other
Operating Activities
Net Cash Provided by Operating Activities	(742)		(349)		(486)
Investing Activities
Property Additions	(260)		(237)		(263)
Purchase of Short-term Investments	(5)		(28)		(17)
Proceeds from Sales of Short-term Investments	66		56		74
Proceeds from Property Dispositions	0		0		1
Other Investing Activities	337		(162)		41
Net Cash Used in Investing Activities	138		(371)		(164)
Financing Activities
Long-term Debt Issued	0		0		0
Long-term Debt Repaid	0		(2)		(3)
Payments of Ordinary Dividends, Common Stock	730		715		680
Stock Options Exercised	0		0		0
Shares acquired, repurchase amount	0		0		0
Other Financing Activities	(132)		(5)		(21)
Net Cash Used in Financing Activities	598		708		656
Net (Decrease) Increase in Cash and Cash Equivalents	(6)		(12)		6
Cash and Cash Equivalents at Beginning of Period	68		80		74
Cash and Cash Equivalents at End of Period	$ 62		$ 68		$ 80

[1] See the revision of prior period financial statements in Note 1. Nature of Operations and Significant Accounting Policies.

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Related Party Transactions (Tables)

12 Months Ended

Dec. 27, 2013

Related Party Transaction [Line Items]

Future minimum lease payments

At December 2013, minimum rentals on land, buildings, track and equipment under operating leases are disclosed in the table below.  Also, payments to Conrail, Inc. ("Conrail") for leases on shared rail infrastructure are included in these amounts. (See Note 12, Related Party Transactions).

(Dollars in Millions)	Operating		Sublease			Net Lease
Years	Leases		Income			Commitments
2014	$	79	$	(3	)	$	76
2015	73		(2		)	71
2016	64		(2		)	62
2017	55		(2		)	53
2018	46		(2		)	44
Thereafter	275		(13		)	262
Total	$	592	$	(24	)	$	568

Schedule of related Conrail amounts included in Company's consolidated income statements

The following table details the related Conrail amounts included in materials, supplies and other in the Company’s consolidated income statements:

	Fiscal Years
(Dollars in Millions)	2013			2012			2011
Rents, Fees and Services	$	115		$	139		$	111
Purchase Price Amortization and Other	4			4			4
Equity in Income of Conrail	(35		)	(26		)	(24		)
Total Conrail Rents, Fees and Services	$	84		$	117		$	91

Schedule of executed promissory notes with Conrail subsidiary

As required by the Related Party Disclosures Topic in the ASC, the Company has identified amounts below owed to Conrail, or its subsidiaries, representing liabilities under the operating, equipment and shared area agreements with Conrail.  The Company also executed two promissory notes with a subsidiary of Conrail which were included in long-term debt on the consolidated balance sheets.

	December		December
(Dollars in Millions)	2013		2012
Balance Sheet Information:
CSX Payable to Conrail (a)	$	172	$	175
Promissory Notes Payable to Conrail Subsidiary (b)
4.40% CSX Promissory Note due October 2035	73		73
4.52% CSXT Promissory Note due March 2035	23		23

(a) CSX Payable to Conrail is included on the consolidated balance sheet of CSX as accounts payable because it is short term in nature.

(b) Promissory notes payable to Conrail are included on the consolidated balance sheet of CSX as long-term debt.

Corporate Joint Venture [Member]

Related Party Transaction [Line Items]

Future minimum lease payments

Future minimum lease payments due to Conrail under the shared asset area agreements are as follows:

(Dollars in Millions)	Conrail Shared
Years	Asset Agreement
2014	$	25
2015	25
2016	25
2017	25
2018	25
Thereafter	144
Total	$	269

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Stock Plans and Share-Based Compensation (Restricted Stock Units) (Details) (USD $) In Millions, except Share data, unless otherwise specified	12 Months Ended
	Dec. 27, 2013		Dec. 28, 2012	Dec. 30, 2011
Long Term Incentive Plan - 2013 [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested [Roll Forward]
Unvested, Units Outstanding, beginning balance	1,054,000		991,000
Granted, Units Outstanding	26,000		65,000
Forfeited, Units Outstanding	0		(2,000)
Cancelled, Units Outstanding	(1,080,000)
Vested, Units Outstanding	0	[1]
Unvested, Units Outstanding, beginning balance	0		1,054,000
Long Term Incentive Plan - 2014 [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested [Roll Forward]
Unvested, Units Outstanding, beginning balance	1,256,000		0
Granted, Units Outstanding	85,000		1,325,000
Forfeited, Units Outstanding	(1,000)		(69,000)
Cancelled, Units Outstanding	0
Vested, Units Outstanding	0	[1]
Unvested, Units Outstanding, beginning balance	1,340,000		1,256,000
Long Term Incentive Plan - 2015 [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested [Roll Forward]
Unvested, Units Outstanding, beginning balance	0		0
Granted, Units Outstanding	1,354,000		0
Forfeited, Units Outstanding	(36,000)		0
Cancelled, Units Outstanding	0
Vested, Units Outstanding	0	[1]
Unvested, Units Outstanding, beginning balance	1,318,000		0
Long-term Incentive Plans [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Unrecognized compensation cost	$ 29
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Weighted Average Grant Date Fair Value [Roll Forward]
Unvested, Weighted-Average Fair Value at Grant Date, beginning balance	$ 23.66		$ 25.92
Granted, Weighted-Average Fair Value at Grant Date	$ 25.24		$ 21.97
Forfeited, Weighted-Average Fair Value at Grant Date	$ (25.31)		$ (21.99)
Cancelled, Weighted-Average Fair Value at Grant Date	$ 25.63
Vested, Weighted-Average Fair Value at Grant Date	$ 0.00	[1]
Unvested, Weighted-Average Fair Value at Grant Date, beginning balance	$ 23.73		$ 23.66
Restricted Stock Units (RSUs) [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based compensation arrangement, vesting period	3 years
Restricted Stock Units (RSUs) [Member] | Long Term Incentive Plan - 2013 [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested [Roll Forward]
Granted, Units Outstanding	361,000
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Weighted Average Grant Date Fair Value [Roll Forward]
Granted, Weighted-Average Fair Value at Grant Date	$ 25.63	[2]
Restricted Stock Units (RSUs) [Member] | Long Term Incentive Plan - 2014 [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested [Roll Forward]
Granted, Units Outstanding	433,000
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Weighted Average Grant Date Fair Value [Roll Forward]
Granted, Weighted-Average Fair Value at Grant Date	$ 22.13	[2]
Restricted Stock Units (RSUs) [Member] | Long Term Incentive Plan - 2015 [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested [Roll Forward]
Granted, Units Outstanding	524,000
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Weighted Average Grant Date Fair Value [Roll Forward]
Granted, Weighted-Average Fair Value at Grant Date	$ 25.32	[2]
Restricted Stock Units (RSUs) [Member] | Long-term Incentive Plans [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based compensation arrangement, vesting period	3 years
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested [Roll Forward]
Granted, Units Outstanding	524,000		433,000	361,000

[1] The minimum financial target was not met in 2013. As a result, there was no performance unit payout for the LTIP ended December 27, 2013.

[2] Number of target units granted and weighted-average fair value calculations above include the value of both initial grants and subsequent, smaller grants issued at different prices based on grant date fair value to new or promoted employees not previously included.

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Employee Benefit Plans (Cash Flows) (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended	12 Months Ended			12 Months Ended
	Mar. 29, 2013	Dec. 28, 2012	Dec. 27, 2013 Pension Plan, Defined Benefit [Member]	Dec. 27, 2013 Other Postretirement Benefit Plan, Defined Benefit [Member]	Dec. 27, 2013 Qualified Employer Contributions [Member] Pension Plan, Defined Benefit [Member]	Dec. 28, 2012 Qualified Employer Contributions [Member] Pension Plan, Defined Benefit [Member]	Dec. 27, 2013 Qualified Employer Contributions [Member] Other Postretirement Benefit Plan, Defined Benefit [Member]	Dec. 28, 2012 Qualified Employer Contributions [Member] Other Postretirement Benefit Plan, Defined Benefit [Member]
Defined Benefit Plan Disclosure [Line Items]
Employer Contributions					$ 0	$ 275	$ 0	$ 0
Defined Benefit Plan, Estimated Future Benefit Payments [Abstract]
2014			167	38
2015			171	36
2016			173	34
2017			176	32
2018			179	31
2019-2023			910	126
Total			1,776	297
Defined Benefit Plan, Contributions By Employer, Required Minimum Amount		25
Defined Benefit Plans, Estimated Future Employer Contributions in Next Fiscal Year	$ 0

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Properties (Significant Property Disposition) (Details) (USD $) In Millions, unless otherwise specified	0 Months Ended	1 Months Ended	12 Months Ended
	Nov. 30, 2011	Nov. 30, 2011	Dec. 27, 2013	Dec. 28, 2012		Dec. 30, 2011
Significant Acquisitions and Disposals [Line Items]
Total number of rail route miles			21,000
Proceeds from property dispositions			$ 53	$ 186	[1]	$ 240	[1]
Payments to Acquire Property, Plant, and Equipment			2,313	2,341	[1]	2,297	[1]
Other Current Liabilities [Member]
Significant Acquisitions and Disposals [Line Items]
Deferred gain on sale of real estate			9	43
Other Long-term Liabilities [Member]
Significant Acquisitions and Disposals [Line Items]
Deferred gain on sale of real estate			0	9
SunRail Transaction - Sale of Corridor [Member]
Significant Acquisitions and Disposals [Line Items]
Total number of rail route miles	61	61
Proceeds from property dispositions	173
Deferred gain on sale of real estate	160	160	9	52
Abnormal gains			43	94		14
SunRail Transaction - Sale of Corridor [Member] | Maximum [Member]
Significant Acquisitions and Disposals [Line Items]
Proceeds from property dispositions in form of government grants	259
SunRail Transaction - Sale of Corridor [Member] | Cash [Member]
Significant Acquisitions and Disposals [Line Items]
Proceeds from property dispositions	148
SunRail Transaction - Sale of Corridor [Member] | Accounts Receivable [Member]
Significant Acquisitions and Disposals [Line Items]
Proceeds from property dispositions in form of receivables held in escrow	25
Capital Addition Purchase Commitments [Member] | SunRail Transaction - Sale of Corridor [Member]
Significant Acquisitions and Disposals [Line Items]
Long-term purchase commitment	500
Long-term purchase commitment, period		8 years
Payments to Acquire Property, Plant, and Equipment			$ 142	$ 311		$ 47

[1] See the revision of prior period financial statements in Note 1. Nature of Operations and Significant Accounting Policies.

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Shareholders' Equity (Details) (USD $)			12 Months Ended
	Dec. 27, 2013	Dec. 28, 2012	Dec. 27, 2013 Common Stock [Member]	Dec. 27, 2013 Preferred Stock [Member]
Class of Stock [Line Items]
Common stock par value (dollars per share)	$ 1.00	$ 1.00
Common Shares Authorized			1,800,000,000
Common Shares Issued			1,009,000,000
Common Shares Outstanding			1,009,000,000
Preferred Shares Authorized				25,000,000
Preferred Shares Issued				0
Preferred Shares Outstanding				0
Number of votes for each share held			1

XML

Nature of Operations and Significant Accounting Policies

12 Months Ended

Dec. 27, 2013

Organization, Consolidation and Presentation of Financial Statements [Abstract]

Nature of Operations and Significant Accounting Policies

Nature of Operations and Significant Accounting Policies

Business

CSX Corporation (“CSX”), and together with its subsidiaries (the “Company”), based in Jacksonville, Florida, is one of the nation's leading transportation companies.  The Company provides rail-based transportation services including traditional rail service and the transport of intermodal containers and trailers.

The Company’s annual average number of employees was approximately 31,000 in 2013, which includes approximately 26,000 union employees.  Most of the Company’s employees provide or support transportation services.

CSX Transportation, Inc.

CSX’s principal operating subsidiary, CSX Transportation, Inc. (“CSXT”), provides an important link to the transportation supply chain through its approximately 21,000 route mile rail network, which serves major population centers in 23 states east of the Mississippi River, the District of Columbia and the Canadian provinces of Ontario and Quebec.  It has access to over 70 ocean, river and lake port terminals along the Atlantic and Gulf Coasts, the Mississippi River, the Great Lakes and the St. Lawrence Seaway.  The Company’s intermodal business, also part of CSXT, links customers to railroads via trucks and terminals. CSXT also serves thousands of production and distribution facilities through track connections to approximately 240 short-line and regional railroads.

Lines of Business

During 2013, CSXT’s transportation services generated $12.0 billion of revenue and served three primary lines of business:

• The merchandise business shipped nearly 2.8 million carloads and generated approximately 59% of revenue and 42% of volume in 2013. The Company’s merchandise business is the most diverse market and transports aggregates (which include crushed stone, sand and gravel), metal, phosphate, fertilizer, food, consumer (manufactured goods and appliances), agricultural, automotive, paper and chemical products.

• The coal business shipped 1.2 million carloads and accounted for 24% of revenue and 18% of volume in 2013.  The Company transports domestic coal, coke and iron ore to electricity-generating power plants, steel manufacturers and industrial plants as well as export coal to deep-water port facilities.  Almost half of export coal and nearly all of the domestic coal that the Company transports is used for generating electricity.

• The intermodal business accounted for approximately 14% of revenue and 40% of volume in 2013. The intermodal line of business combines the superior economics of rail transportation with the short-haul flexibility of trucks and offers a competitive cost advantage over long-haul trucking.  Through a network of more than 50 terminals, the intermodal business serves all major markets east of the Mississippi and transports mainly manufactured consumer goods in containers, providing customers with truck-like service for longer shipments.

NOTE 1.  Nature of Operations and Significant Accounting Policies, continued

Other revenue accounted for approximately 3% of the Company’s total revenue in 2013.  This revenue category includes revenue from regional subsidiary railroads, demurrage, revenue for customer volume commitments not met, switching and other incidental charges. Revenue from regional railroads includes shipments by railroads that the Company does not directly operate.  Demurrage represents charges assessed when freight cars are held beyond a specified period of time.  Switching revenue is primarily generated when CSXT switches cars for a customer or another railroad.

Other Entities

In addition to CSXT, the Company’s subsidiaries include CSX Intermodal Terminals, Inc. (“CSX Intermodal Terminals”), Total Distribution Services, Inc. (“TDSI”), Transflo Terminal Services, Inc. (“Transflo”), CSX Technology, Inc. (“CSX Technology”) and other subsidiaries.   CSX Intermodal Terminals owns and operates a system of intermodal terminals, predominantly in the eastern United States and also performs drayage services (the pickup and delivery of intermodal shipments) for certain CSXT customers and trucking dispatch operations.  TDSI serves the automotive industry with distribution centers and storage locations.  Transflo connects non-rail served customers to the many benefits of rail by transferring products from rail to trucks.  Today, the biggest Transflo markets are chemicals and agriculture, such as minerals and ethanol. CSX Technology and other subsidiaries provide support services for the Company.

CSX’s other holdings include CSX Real Property, Inc., a subsidiary responsible for the Company’s real estate sales, leasing, acquisition and management and development activities.  These activities are classified in other income - net because they are not considered to be operating activities by the Company.  Results of these activities fluctuate with the timing of non-operating real estate transactions.

Basis of Presentation

In the opinion of management, the accompanying consolidated financial statements contain all normal, recurring adjustments necessary to present fairly the financial position of CSX and its subsidiaries at December 27, 2013 and December 28, 2012, and the consolidated statements of income, comprehensive income, cash flows and changes in shareholders’ equity for fiscal years 2013, 2012 and 2011.

In addition, management has evaluated and disclosed all material events occurring subsequent to the date of the financial statements up to the date this annual report is filed on Form 10-K.

Fiscal Year

CSX follows a 52/53 week fiscal reporting calendar.  This fiscal calendar allows every quarter to consistently end on a Friday and typically, to be of equal duration (13 weeks), resulting in a 52 week fiscal year.  To maintain this type of reporting calendar every fifth or sixth year (depending on the Gregorian calendar and when leap year falls), an extra week will be included in the fourth quarter (a 14-week fiscal quarter) and, therefore, that full fiscal year will have 53 weeks.  The next 53 week fiscal year will be 2016, which will end on December 30, 2016.

Fiscal years 2013, 2012 and 2011 each consisted of 52 weeks ending on December 27, 2013, December 28, 2012 and December 30, 2011, respectively.  Except as otherwise specified, references to full year indicate CSX’s fiscal periods ended on these dates.

NOTE 1.  Nature of Operations and Significant Accounting Policies, continued

Principles of Consolidation

The consolidated financial statements include results of operations of CSX and subsidiaries over which CSX has majority ownership or financial control. All significant intercompany accounts and transactions have been eliminated. Most investments in companies that were not majority-owned were carried at cost (if less than 20% owned and the Company has no significant influence) or equity (if the Company has significant influence).

Cash, Cash Equivalents and Short-term Investments

On a daily basis, cash in excess of current operating requirements is invested in various highly liquid investments having a typical maturity date of three months or less at the date of acquisition. These investments were carried at cost, which approximated market value, and were classified as cash equivalents. Investments in instruments with original maturities greater than three months but less than one year were classified as short-term investments.

Allowance for Doubtful Accounts

The Company maintains an allowance for doubtful accounts on uncollectible amounts related to freight receivables, government reimbursement receivables, claims for damages and other various receivables. The allowance is based upon the credit worthiness of customers, historical experience, the age of the receivable and current market and economic conditions. Uncollectible amounts are charged against the allowance account. Allowance for doubtful accounts of $33 million and $36 million is included in the consolidated balance sheets as of December 2013 and December 2012, respectively.

Materials and Supplies

Materials and supplies in the consolidated balance sheets are carried at average costs and consist primarily of fuel and parts used in the repair and maintenance of CSXT’s freight car and locomotive fleets, equipment and track structure.

Goodwill

Goodwill represents purchase price in excess of fair value and is related to affiliates of CSXT, primarily P&L Transportation, Inc. Goodwill of $64 million is recorded in other long-term assets in the consolidated balance sheets as of December 2013 and 2012.

Revenue and Expense Recognition

The Company recognizes freight revenue using Free-On-Board Origin pursuant to the Revenue Recognition Topic in the ASC.  Accounting guidance in this topic provides for the allocation of revenue between reporting periods based on relative transit time in each reporting period.  Expenses are recognized as incurred.

NOTE 1.  Nature of Operations and Significant Accounting Policies, continued

The certain key estimates included in the recognition and measurement of revenue and related accounts receivable under the policies described above are as follows:

• revenue associated with shipments in transit, which are based on historical freight car movement data as well as average cycle times to move commodities and products from their origin to their final destination or interchange;

• adjustments to revenue for billing corrections, billing discounts and bad debts or to accounts receivable for allowances for doubtful accounts;

• adjustments to revenue for overcharge claims filed by customers, which are based on historical cash paid to customers for rate overcharges as a percentage of total billing;

• incentive-based refunds to customers, which are primarily based on customers achieving certain volume thresholds and are recorded as a reduction to revenue on the basis of management’s best estimate of the projected liability  (this estimate is based on historical activity, current volume levels and a forecast of future volume).

The Company regularly updates the estimates described above based on historical experience and current conditions.  All other revenue, such as demurrage, switching and other incidental charges are recorded upon completion of the service. Amounts received for customer volume commitments not met are recorded upon the completion of the contract term.

New Accounting Pronouncements

In February 2013, the Financial Accounting Standards Board ("FASB") issued an Accounting Standards Update to the Comprehensive Income Topic in the Accounting Standards Codifications ("ASC"). This update requires separate presentation of the components that are reclassified out of accumulated other comprehensive income either on the face of the financial statements or in the notes to the financial statements. This update also requires companies to disclose the income statement line items impacted by any significant reclassifications, such as the amortization of pension and other post-employment benefits adjustments. These items are required for both interim and annual reporting for public companies and became effective for CSX beginning with the first quarter 2013 Form 10-Q filing.

Use of Estimates

The preparation of financial statements in conformity with accounting principles generally accepted in the United States requires that management make estimates in reporting the amounts of certain assets and liabilities, the disclosure of contingent assets and liabilities at the date of the financial statements and the reported amount of certain revenues and expenses during the reporting period.  Actual results may differ from those estimates.  Critical accounting estimates using management judgment are made for the following areas:

• casualty, environmental and legal reserves (see Note 5, Casualty, Environmental and Other Reserves);

• pension and post-retirement medical plan accounting (see Note 8, Employee Benefit Plans);

• depreciation policies for assets under the group-life method (see Note 6, Properties); and

• income taxes (see Note 11, Income Taxes).

NOTE 1.  Nature of Operations and Significant Accounting Policies, continued

Revision of Prior Period Financial Statements

During the fourth quarter of 2013, CSX completed a review of certain accounts receivable balances which resulted in an adjustment to previously reported revenue. This review identified immaterial differences between estimated and actual revenue earned on a small percentage of transactions as well as a small percentage of revenue over at least a decade.

In accordance with ASC 250 Accounting Changes and Error Corrections as well as the SEC's Staff Accounting Bulletin No. 99, Materiality, the Company evaluated the materiality of this error on prior period financial statements and determined that it did not result in a material misstatement to the financial conditions, results of operations, or liquidity for any of the periods presented.

The Company also determined that the effect of recording all corrections during the fourth quarter of 2013 would have been material to the financial statements. As a result, prior period financial statements have been revised to correct the errors in accordance with ASC 250 and the SEC's Staff Accounting Bulletin No. 108, Considering the Effects of Prior Year Misstatements when Quantifying Misstatements in Current Year Financial Statements, as shown in the tables below.

NOTE 1.  Nature of Operations and Significant Accounting Policies, continued

Dollars in Millions, Except Per Share Amounts	2012									2011
Consolidated Income Statements	As Previously Reported			Adjustment			As Revised			As Previously Reported			Adjustment			As Revised
Revenue	$	11,756		$	7		$	11,763		$	11,743		$	52		$	11,795
Operating Income	3,457			7			3,464			3,418			52			3,470
Earnings Before Income Taxes	2,964			7			2,971			2,888			52			2,940
Income Tax Expense	(1,105		)	(3		)	(1,108		)	(1,066		)	(20		)	(1,086		)
Net Earnings	1,859			4			1,863			1,822			32			1,854
Net Earnings Per Share, Basic	$	1.79		$	0.01		$	1.80		$	1.68		$	0.03		$	1.71
Net Earnings Per Share, Assuming Dilution	$	1.79		$	—		$	1.79		$	1.67		$	0.03		$	1.70
Consolidated Comprehensive Income Statements
Net Earnings	$	1,859		$	4		$	1,863		$	1,822		$	32		$	1,854
Comprehensive Earnings	1,798			4			1,802			1,718			32			1,750
Consolidated Balance Sheets
Accounts Receivable - Net	$	962		$	152		$	1,114		$	1,000		$	147		$	1,147
Total Current Assets	2,801			152			2,953			2,806			147			2,953
Total Assets	30,571			152			30,723			29,344			147			29,491
Accounts Payable	1,014			(66		)	948			1,018			(64		)	954
Income and Other Taxes Payable	85			84			169			129			81			210
Total Current Liabilities	2,627			18			2,645			2,558			17			2,575
Total Liabilities	21,569			18			21,587			20,876			17			20,893
Retained Earnings	8,876			134			9,010			8,275			130			8,405
Total Shareholders' Equity	9,002			134			9,136			8,468			130			8,598
Total Liabilities and Shareholders' Equity	$	30,571		$	152		$	30,723		$	29,344		$	147		$	29,491
Consolidated Cash Flow Statements
Net Earnings	$	1,859		$	4		$	1,863		$	1,822		$	32		$	1,854
Changes in Operating Assets and Liabilities
Accounts Receivable	67			(6		)	61			(59		)	(58		)	(117		)
Accounts Payable	(3		)	(1		)	(4		)	70			6			76
Income and Other Taxes Payable	(17		)	3			(14		)	96			20			116
Net Cash Provided by Operating Activities	$	2,946		$	—		$	2,946		$	3,491		$	—		$	3,491
Statement of Changes in Shareholders' Equity	2010
Retained Earnings	$	9,087		$	98		$	9,185

NOTE 1.  Nature of Operations and Significant Accounting Policies, continued

Other Items - Share Repurchases

In April 2013, the Company announced a new $1 billion share repurchase program, which is expected to be completed by April 2015. Management's assessment of market conditions and pertinent facts guide the timing and volume of all repurchases. Future share repurchases are expected to be funded by cash on hand, cash generated from operations and debt issuances.

During 2013, CSX repurchased $353 million, or 14 million in shares of common stock under the new share repurchase program. Additionally, the Company repurchased a total of $734 million, or 34 million shares, and $1.6 billion, or 67 million shares, in 2012 and 2011, respectively, under previous share repurchase programs. In accordance with the Equity Topic in the ASC, the excess of repurchase price over par value is recorded in retained earnings. Generally, retained earnings is only impacted by net earnings and dividends.

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Commitments and Contingencies (Lease Commitments) (Details) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 27, 2013	Dec. 28, 2012	Dec. 30, 2011
Operating Leased Assets [Line Items]
Maximum lease term	30 years
Operating Leases [Abstract]
2014	$ 79
2015	73
2016	64
2017	55
2018	46
Thereafter	275
Total	592
Sublease Income [Abstract]
2014	(3)
2015	(2)
2016	(2)
2017	(2)
2018	(2)
Thereafter	(13)
Total	24
Net Lease Commitments [Abstract]
2014	76
2015	71
2016	62
2017	53
2018	44
Thereafter	262
Total	568
Rent Expense on Operating Leases [Member]
Operating Leases, Rent Expense, Net [Abstract]
Rent Expense on Operating Leases	$ 60	$ 73	$ 68

XML

Nature of Operations and Significant Accounting Policies (Nature of Operations) (Details) Phantom (USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 27, 2013	Dec. 28, 2012	Dec. 30, 2011
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Number of weeks in fiscal reporting calendar	P52W	P52W	P52W
Number of weeks in fiscal quarter	P13W
Cost Method Investment, Maximum Percentage for Treatment	20.00%
Cash equivalents, maximum maturity period	3 months
Short-term investments, minimum maturity period	3 months
Short-term investments, maximum maturity period	1 year
Allowance for Doubtful Accounts Receivable, Current	$ 33	$ 36
Goodwill	$ 64

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Stock Plans and Share-Based Compensation (Tables)

12 Months Ended

Dec. 27, 2013

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

Schedule of share-based compensation and related income tax benefit

 Total pre-tax expense associated with share-based compensation and its related income tax benefit is as follows:

	Fiscal Years
(Dollars in Millions)	2013		2012		2011
Share-Based Compensation Expense	$	14	$	14	$	30
Income Tax Benefit	6		5		11

Schedule of stock option activity

A summary of CSX's stock option activity and related information for the fiscal years 2013, 2012 and 2011 is as follows:

	Fiscal Years
	2013				2012				2011
	Options Outstanding (Thousands)		Weighted- Average Exercise Price		Options Outstanding (Thousands)		Weighted- Average Exercise Price		Options Outstanding (Thousands)		Weighted- Average Exercise Price
Outstanding & Exercisable at Beginning of Year	1,672		$	5.36	4,145		$	5.64	9,111		$	5.82
Expired or Cancelled	(9	)	5.36		(15	)	6.36		(27	)	6.44
Exercised	(1,663	)	5.36		(2,458	)	5.83		(4,939	)	5.96
Outstanding & Exercisable at End of Year	—		$	—	1,672		$	5.36	4,145		$	5.64

Schedule of outstanding restricted stock awards

The following table provides information about outstanding restricted stock units and awards combined.  As of December 2013, unrecognized compensation expense for these awards and units was approximately $17 million, which will be expensed over a weighted-average remaining period of 2 years.

	Fiscal Years
	2013		2012		2011
Restricted Stock Units and Awards Outstanding (Thousands)(a)	1,462		1,353		1,572
Weighted-Average Fair Value at Grant Date	$	23.89	$	21.38	$	16.91
Restricted Stock Units and Awards Expense (Millions)(a)	10		9		7
Unvested Restricted Stock Units and Awards Outstanding (Thousands)	705		629		678
Weighted-Average Fair Value of Unvested Units and Awards Outstanding	$	24.17	$	22.48	$	20.93

(a)  Time-based restricted stock units were granted to certain employees under the respective Long-term Incentive Plans in the amount of 524,000, 433,000, and 361,000 in 2013, 2012, and 2011, respectively, as described below.  These units vest over three years, therefore only a partial amount of expense was recognized in 2013, 2012, and 2011, respectively.

Schedule of target units granted and weighted-average fair value calculations

	LTIP Plan (Plan Ended In)
	2013		2014		2015
Number of target units outstanding (Thousands)(a)	1,080		1,340		1,318
Weighted-average fair value at grant date (a)	$	25.63	$	22.13	$	25.32
Payout Range	0% - 200%		0% - 200%		0% - 200%

(a) Number of target units granted and weighted-average fair value calculations above include the value of both initial grants and subsequent, smaller grants issued at different prices based on grant date fair value to new or promoted employees not previously included.

Schedule of outstanding long-term incentive plans

The activity related to each of the outstanding long-term incentive plans is summarized as follows:

	LTIP Plan (Plan Ended In)						Weighted-Average Fair Value at Grant Date
(Units Outstanding, in Thousands)	2013		2014		2015
Unvested at December 30, 2011	991		—		—		$	25.92
Granted in 2012	65		1,325		—		21.97
Forfeited in 2012	(2	)	(69	)	—		(21.99		)
Unvested at December 28, 2012	1,054		1,256		—		23.66
Granted in 2013	26		85		1,354		25.24
Forfeited in 2013	—		(1	)	(36	)	(25.31		)
Cancelled due to performance conditions(a)	(1,080	)	—		—		25.63
Vested at December 27, 2013	—		—		—		—
Unvested at December 27, 2013	—		1,340		1,318		$	23.73

(a) The minimum financial target was not met in 2013. As a result, there was no performance unit payout for the LTIP ended December 27, 2013.

Schedule of shares issued to directors

 The following table provides information about shares issued to directors.

	Fiscal Years
	2013		2012		2011
Shares Issued to Directors (Thousands)	105		102		93
Expense (Millions)	$	2	$	2	$	2
Weighted Average Grant Date Stock Price	$	23.12	$	21.92	$	23.46

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Shareholders' Equity (Tables)

12 Months Ended

Dec. 27, 2013

Stockholders' Equity Note [Abstract]

Schedule of common and preferred stock

Common and preferred stock consists of the following:

Common Stock, $1 Par Value	December 2013
	(Units in Millions)
Common Shares Authorized	1,800
Common Shares Issued and Outstanding	1,009
Preferred Stock
Preferred Shares Authorized	25
Preferred Shares Issued and Outstanding	—

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Casualty, Environmental and Other Reserves (Casualty) (Details) (Casualty [Member], USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 27, 2013 claims	Dec. 28, 2012	Dec. 30, 2011	Dec. 31, 2010
Casualty [Member]
Loss Contingencies [Line Items]
Loss Contingency Accrual	$ 280	$ 325	$ 372	$ 375
Self-insured retention amount per injury	50
Individual claims expected to exceed self-insured retention amount	0
Change in estimate recorded to adjust reserves	$ 0	$ 0	$ 0

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Nature of Operations and Significant Accounting Policies (Revision of Prior Period Financial Statements) (Details) (USD $) In Millions, except Per Share data, unless otherwise specified	3 Months Ended														12 Months Ended
	Dec. 27, 2013		Sep. 27, 2013	Jun. 28, 2013	Mar. 29, 2013	Dec. 30, 2012	Sep. 28, 2012	Jun. 29, 2012	Mar. 30, 2012	Dec. 30, 2011		Sep. 30, 2011	Jul. 01, 2011	Apr. 01, 2011	Dec. 27, 2013		Dec. 28, 2012		Dec. 30, 2011		Dec. 31, 2010
Revenue	$ 3,032		$ 2,985	$ 3,046	$ 2,963	$ 2,895	$ 2,864	$ 2,986	$ 3,018	$ 2,993		$ 2,962	$ 3,013	$ 2,827	$ 12,026		$ 11,763	[1]	$ 11,795	[1]
Operating Income	813		840	940	880	815	824	917	908	883		877	920	790	3,473		3,464	[1]	3,470	[1]
Earnings Before Income Taxes															2,922		2,971	[1]	2,940	[1]
Income Tax Expense															(1,058)		(1,108)	[1]	(1,086)	[1]
Net Earnings	426		455	521	462	449	437	496	481	483		463	502	406	1,864		1,863	[1]	1,854	[1]
Net Earnings Per Share, Basic (dollars per share)	$ 0.42		$ 0.45	$ 0.51	$ 0.45	$ 0.44	$ 0.42	$ 0.48	$ 0.46	$ 0.46		$ 0.43	$ 0.46	$ 0.37	$ 1.83		$ 1.80	[1]	$ 1.71	[1]
Net Earnings Per Share, Assuming Dilution (dollars per share)	$ 0.42		$ 0.45	$ 0.51	$ 0.45	$ 0.44	$ 0.42	$ 0.48	$ 0.46	$ 0.46		$ 0.43	$ 0.45	$ 0.36	$ 1.83		$ 1.79	[1]	$ 1.70	[1]
Comprehensive Earnings															2,277		1,802	[1]	1,750	[1]
Accounts Receivable - Net	1,052	[1]								1,147	[1]				1,052	[1]	1,114	[1]	1,147	[1]
Total Current Assets	2,602									2,953					2,602		2,953	[1]	2,953
Total Assets	31,782									29,491					31,782		30,723	[1]	29,491
Accounts Payable	957	[1]								954	[1]				957	[1]	948	[1]	954	[1]
Income and Other Taxes Payable	91	[1]								210	[1]				91	[1]	169	[1]	210	[1]
Total Current Liabilities	2,424									2,575					2,424		2,645	[1]	2,575
Total Liabilities	21,278									20,893					21,278		21,587	[1]	20,893
Retained Earnings	9,936	[1]								8,405	[1]				9,936	[1]	9,010	[1]	8,405	[1]
Total Shareholders' Equity	10,504									8,598					10,504		9,136	[1]	8,598		8,798
Total Liabilities and Shareholders' Equity	31,782									29,491					31,782		30,723	[1]	29,491
Accounts Receivable															(6)		61	[1]	(117)	[1]
Accounts Payable															28		(4)	[1]	76	[1]
Income and Other Taxes Payable															(67)		(14)	[1]	116	[1]
Net Cash Provided by Operating Activities															3,267		2,946	[1]	3,491	[1]
As Previously Reported
Revenue																	11,756		11,743
Operating Income																	3,457		3,418
Earnings Before Income Taxes																	2,964		2,888
Income Tax Expense																	(1,105)		(1,066)
Net Earnings																	1,859		1,822
Net Earnings Per Share, Basic (dollars per share)																	$ 1.79		$ 1.68
Net Earnings Per Share, Assuming Dilution (dollars per share)																	$ 1.79		$ 1.67
Comprehensive Earnings																	1,798		1,718
Accounts Receivable - Net										1,000							962		1,000
Total Current Assets										2,806							2,801		2,806
Total Assets										29,344							30,571		29,344
Accounts Payable										1,018							1,014		1,018
Income and Other Taxes Payable										129							85		129
Total Current Liabilities										2,558							2,627		2,558
Total Liabilities										20,876							21,569		20,876
Retained Earnings										8,275							8,876		8,275
Total Shareholders' Equity										8,468							9,002		8,468
Total Liabilities and Shareholders' Equity										29,344							30,571		29,344
Accounts Receivable																	(67)		59
Accounts Payable																	(3)		70
Income and Other Taxes Payable																	(17)		96
Net Cash Provided by Operating Activities																	2,946		3,491
Adjustment
Revenue																	7		52
Operating Income																	7		52
Earnings Before Income Taxes																	7		52
Income Tax Expense																	(3)		(20)
Net Earnings																	4		32
Net Earnings Per Share, Basic (dollars per share)																	$ 0.01		$ 0.03
Net Earnings Per Share, Assuming Dilution (dollars per share)																	$ 0.00		$ 0.03
Comprehensive Earnings																	4		32
Accounts Receivable - Net										147							152		147
Total Current Assets										147							152		147
Total Assets										147							152		147
Accounts Payable										(64)							(66)		(64)
Income and Other Taxes Payable										81							84		81
Total Current Liabilities										17							18		17
Total Liabilities										17							18		17
Retained Earnings										130							134		130
Total Shareholders' Equity										130							134		130
Total Liabilities and Shareholders' Equity										147							152		147
Accounts Receivable																	6		58
Accounts Payable																	(1)		6
Income and Other Taxes Payable																	3		20
Net Cash Provided by Operating Activities																	0		0
Retained Earnings
Net Earnings															1,864	[1]	1,863	[1]	1,854	[1]
Total Shareholders' Equity	9,936	[1]								8,405	[1]				9,936	[1]	9,010	[1]	8,405	[1]	9,185	[1]
Retained Earnings | As Previously Reported
Total Shareholders' Equity																					9,087
Retained Earnings | Adjustment
Total Shareholders' Equity																					$ 98

[1] See the revision of prior period financial statements in Note 1. Nature of Operations and Significant Accounting Policies.

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Casualty, Environmental and Other Reserves (Tables)

12 Months Ended

Dec. 27, 2013

Casualty, Environmental and Other Reserves [Abstract]

Casualty, environmental and other reserves

Activity related to casualty, environmental and other reserves is as follows:

	Casualty			Environmental			Other
(Dollars in Millions)	Reserves			Reserves			Reserves			Total
December 31, 2010	$	375		$	107		$	59		$	541
Charged to Expense	68			23			41			132
Payments	(71		)	(47		)	(36		)	(154		)
December 30, 2011	372			83			64			519
Charged to Expense	51			35			36			122
Payments	(98		)	(30		)	(36		)	(164		)
December 28, 2012	325			88			64			477
Charged to Expense	54			48			38			140
Payments	(99		)	(36		)	(31		)	(166		)
December 27, 2013	$	280		$	100		$	71		$	451

NOTE 5.  Casualty, Environmental and Other Reserves, continued

These reserves are considered critical accounting estimates due to the need for significant management judgments. They are provided for in the consolidated balance sheets as follows:

	December 2013						December 2012
(Dollars in Millions)	Current		Long-term		Total		Current		Long-term		Total
Casualty:
Personal Injury	$	59	$	148	$	207	$	75	$	158	$	233
Occupational	3		20		23		5		31		36
Asbestos	10		40		50		8		48		56
Total Casualty	72		208		280		88		237		325
Environmental	59		41		100		33		55		88
Other	20		51		71		19		45		64
Total	$	151	$	300	$	451	$	140	$	337	$	477

Schedule of Liability for Unpaid Claims and Claims Adjustment Expense

Undiscounted liabilities recorded related to occupational and asbestos claims were as follows:

	December		December
(Dollars in Millions)	2013		2012
Occupational:
Incurred but not reported claims	$	15	$	24
Asserted claims	8		12
Total liability	$	23	$	36
Asbestos:
Incurred but not reported claims	$	35	$	37
Asserted claims	15		19
Total liability	$	50	$	56

Schedule of Claims Activity

A summary of occupational and asbestos claims activity is as follows:

	Fiscal Years
	2013		2012
Asserted Claims
Open Claims - Beginning of Year	523		746
New Claims Filed	165		160
Claims Settled	(146	)	(154	)
Claims Dismissed	(150	)	(229	)
Open Claims - End of Year	392		523

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Properties (Tables)

12 Months Ended

Dec. 27, 2013

Property, Plant and Equipment [Abstract]

Schedule of net properties

A detail of the Company’s net properties are as follows:

(Dollars in Millions)				Accumulated			Net Book		Annual Depreciation	Depreciation	Estimated Useful
December 2013		Cost		Depreciation			Value		Rate	Method	Life
Road
	Rail and Other Track Material	$	6,452	$	(1,270	)	$	5,182	2.9%	Group Life
	Ties	4,534		(947		)	3,587		4.0%	Group Life
	Grading	2,425		(448		)	1,977		1.5%	Group Life
	Ballast	2,612		(645		)	1,967		2.8%	Group Life
	Bridges, Trestles, and Culverts	2,008		(250		)	1,758		1.6%	Group Life
	Signals and Interlockers	1,922		(291		)	1,631		3.4%	Group Life
	Buildings	1,011		(355		)	656		2.5%	Group Life
	Other	3,654		(1,386		)	2,268		4.7%	Group Life
Total Road		24,618		(5,592		)	19,026				6-80 Years
Equipment
	Locomotive	4,987		(2,176		)	2,811		3.6%	Group Life
	Freight Cars	3,111		(1,135		)	1,976		3.1%	Group Life
	Work Equipment and Other	1,666		(914		)	752		7.1%	Group Life
Total Equipment		9,764		(4,225		)	5,539				5-38 Years
Land		1,842		—			1,842		N/A	N/A	N/A
Construction In Progress		854		—			854		N/A	N/A	N/A
Other		106		(76		)	30		N/A	Straight Line	4-30 Years
Total Properties		$	37,184	$	(9,893	)	$	27,291

NOTE 6.  Properties, continued

(Dollars in Millions)				Accumulated			Net Book		Annual Depreciation	Depreciation	Estimated Useful
December 2012		Cost		Depreciation			Value		Rate	Method	Life
Road
	Rail and Other Track Material	$	6,177	$	(1,131	)	$	5,046	2.9%	Group Life
	Ties	4,287		(861		)	3,426		4.0%	Group Life
	Grading	2,407		(414		)	1,993		1.5%	Group Life
	Ballast	2,528		(624		)	1,904		2.8%	Group Life
	Bridges, Trestles, and Culverts	1,962		(224		)	1,738		1.6%	Group Life
	Signals and Interlockers	1,787		(302		)	1,485		3.4%	Group Life
	Buildings	926		(316		)	610		2.5%	Group Life
	Other	3,345		(1,281		)	2,064		4.7%	Group Life
Total Road		23,419		(5,153		)	18,266				6-80 Years
Equipment
	Locomotive	4,747		(2,079		)	2,668		3.6%	Group Life
	Freight Cars	3,088		(1,119		)	1,969		3.1%	Group Life
	Work Equipment and Other	1,466		(810		)	656		7.1%	Group Life
Total Equipment		9,301		(4,008		)	5,293				5-38 Years
Land		1,745		—			1,745		N/A	N/A	N/A
Construction In Progress		602		—			602		N/A	N/A	N/A
Other		212		(68		)	144		N/A	Straight Line	4-30 Years
Total Properties		$	35,279	$	(9,229	)	$	26,050

Schedule of deferred gain on sale of real estate

The deferred gain balance included in the consolidated balance sheets is in the table below.

	Deferred gain as of
(Dollars in Millions)	December 2013		December 2012
Current portion, included in Other Current Liabilities	$	9	$	43
Long term portion, included in Other Long-Term Liabilities	—		9
Total	$	9	$	52

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CONSOLIDATED STATEMENTS OF CHANGES IN SHAREHOLDERS EQUITY (Parenthetical) (USD $) In Millions, except Per Share data, unless otherwise specified	12 Months Ended
	Dec. 27, 2013	Dec. 28, 2012	Dec. 30, 2011
Statement of Stockholders' Equity [Abstract]
Common Stock Dividends (dollars per share)	$ 0.59	$ 0.54	$ 0.45
Accumulated Other Comprehensive Income (Loss)
Statement [Line Items]
Accumulated Other Comprehensive Loss - Tax amount	$ 266	$ 496	$ 463

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Commitments and Contingencies (Tables)

12 Months Ended

Dec. 27, 2013

Commitments and Contingencies Disclosure [Abstract]

Schedule of rent expense associated with operting leases

The Company uses the straight-line method to recognize rent expense associated with operating leases that include escalations over their terms. These amounts are shown in the table below.

	Fiscal Years
(Dollars in Millions)	2013		2012		2011
Rent Expense on Operating Leases	$	60	$	73	$	68

Schedule of minimum rentals and commitments under operating leases

At December 2013, minimum rentals on land, buildings, track and equipment under operating leases are disclosed in the table below.  Also, payments to Conrail, Inc. ("Conrail") for leases on shared rail infrastructure are included in these amounts. (See Note 12, Related Party Transactions).

(Dollars in Millions)	Operating		Sublease			Net Lease
Years	Leases		Income			Commitments
2014	$	79	$	(3	)	$	76
2015	73		(2		)	71
2016	64		(2		)	62
2017	55		(2		)	53
2018	46		(2		)	44
Thereafter	275		(13		)	262
Total	$	592	$	(24	)	$	568

Schedule of number of locomotives and payments under long-term maintenance program

The following table summarizes the number of locomotives covered and CSXT’s payments under the long-term maintenance program.

	Fiscal Years
(Dollars in Millions)	2013		2012		2011
Amounts Paid	$	287	$	287	$	281
Number of Locomotives	1,886		1,899		1,928

Schedule of annual payments under long-term maintenance program

Additionally, the Company has various other commitments to purchase technology, communications, railcar maintenance and other services from various suppliers.  Total annual payments under all of these purchase commitments are also estimated in the table below.

(Dollars in Millions)	Locomotive & Maintenance Payments		Other Commitments		Total
2014	$	292	$	321	$	613
2015	253		66		319
2016	245		15		260
2017	232		6		238
2018	220		6		226
Thereafter	1,314		53		1,367
Total	$	2,556	$	467	$	3,023

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Income Taxes (Income Tax Reconciliation) (Details) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 27, 2013	Dec. 28, 2012		Dec. 30, 2011
Reconciliation between the statutory income tax rate and the effective income tax rate [Abstract]
Federal Income Taxes	$ 1,023	$ 1,040	[1]	$ 1,029	[1]
State Income Taxes	65	81	[1]	65	[1]
Other items	(30)	(13)	[1]	(8)	[1]
Income Tax Expense (Benefit)	1,058	1,108	[1]	1,086	[1]
Effective Income Tax Rate Reconciliation, Percent [Abstract]
Federal Income Taxes	35.00%	35.00%	[1]	34.90%	[1]
State Income Taxes	2.20%	2.80%	[1]	2.20%	[1]
Other Items	(1.00%)	(0.40%)	[1]	(0.30%)	[1]
Income Tax Rate	36.20%	37.40%	[1]	36.80%	[1]
State and Local Jurisdiction [Member]
Reconciliation between the statutory income tax rate and the effective income tax rate [Abstract]
State Income Taxes	$ (42)	$ (20)		$ (14)

[1] See the revision of prior period financial statements in Note 1. Nature of Operations and Significant Accounting Policies.

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Quarterly Financial Data (Unaudited) (Tables)

12 Months Ended

Dec. 27, 2013

Quarterly Financial Information Disclosure [Abstract]

Schedule of quarterly financial data

Pursuant to Article 3 of the SEC’s Regulation S-X, the following are selected quarterly financial data, which has been revised for all four quarters of 2011 and 2012 as well as the first three quarters of 2013. See the revision of prior period financial statements in Note 1. Nature of Operations and Significant Accounting Policies.

Fiscal Year Ended December 2013	Quarters
(Dollars in Millions, Except Per Share Amounts)	1st		2nd		3rd		4th		Full Year
Revenue	$	2,963	$	3,046	$	2,985	$	3,032	$	12,026
Operating Income	880		940		840		813		3,473
Net Earnings	462		521		455		426		1,864
Earnings Per Share, Basic	$	0.45	$	0.51	$	0.45	$	0.42	$	1.83
Earnings Per Share, Assuming Dilution	0.45		0.51		0.45		0.42		1.83
Fiscal Year Ended December 2012
Revenue	$	3,018	$	2,986	$	2,864	$	2,895	$	11,763
Operating Income	908		917		824		815		3,464
Net Earnings	481		496		437		449		1,863
Earnings Per Share, Basic	$	0.46	$	0.48	$	0.42	$	0.44	$	1.80
Earnings Per Share, Assuming Dilution	0.46		0.48		0.42		0.44		1.79
Fiscal Year Ended December 2011
Revenue	$	2,827	$	3,013	$	2,962	$	2,993	$	11,795
Operating Income	790		920		877		883		3,470
Net Earnings	406		502		463		483		1,854
Earnings Per Share, Basic	$	0.37	$	0.46	$	0.43	$	0.46	$	1.71
Earnings Per Share, Assuming Dilution	0.36		0.45		0.43		0.46		1.70

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Stock Plans and Share-Based Compensation (Stock Awards for Directors) (Details) (USD $) Share data in Thousands, except Per Share data, unless otherwise specified	12 Months Ended
	Dec. 27, 2013	Dec. 28, 2012	Dec. 30, 2011
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-Based Compensation Expense	$ 14,000,000	$ 14,000,000	$ 30,000,000
Non-management Directors [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Annual retainer to be paid to non-management directors, cash option	75,000
Annual retainer to be paid to non-management directors, common stock option	150,000
Shares Issued to Directors	105	102	93
Share-Based Compensation Expense	$ 2,000,000	$ 2,000,000	$ 2,000,000
Weighted Average Grant Date Stock Price	$ 23.12	$ 21.92	$ 23.46

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Employee Benefit Plans (Net Benefit Expense) (Details) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 27, 2013		Dec. 28, 2012		Dec. 30, 2011
Pension Plans, Defined Benefit [Member]
Components of expense/ (income) related to net benefit expense [Abstract]
Service Cost	$ 49		$ 44		$ 40
Interest Cost	108		123		121
Expected Return on Plan Assets	(162)		(166)		(157)
Amortization of Net Loss	100	[1]	82	[1]	71
Amortization of Prior Service Cost	0	[2]	0	[2]	0
Net Periodic Benefit Expense	95		83		75
Settlement gain	(2)	[3]	(2)	[3]	(2)	[3]
Total Expense	93		81		73
Other Post-Retirement Benefits
Components of expense/ (income) related to net benefit expense [Abstract]
Service Cost	3		4		2
Interest Cost	13		16		11
Expected Return on Plan Assets	0		0		0
Amortization of Net Loss	14	[1]	9	[1]	7
Amortization of Prior Service Cost	(1)	[2]	(1)	[2]	(1)
Net Periodic Benefit Expense	29		28		19
Settlement gain	0	[3]	0	[3]	0	[3]
Total Expense	$ 29		$ 28		$ 19

[1] Amortization of net losses estimated to be expensed for 2014 is $57 million and $6 million for pension benefits and post-retirement benefits, respectively. The decrease in amortization is largely related to the impact of increasing discount rates.

[2] Amortization of prior service costs estimated to be expensed in 2014 are less than $1 million for pension benefits. The estimated post-retirement benefits amount to be credited to expense for 2014 is $1 million.

[3] Settlement gains were recognized as one of the pension plan's lump-sum payments exceeded the sum of the service cost and interest cost recognized. The gain is the recognition of a portion of its accumulated other comprehensive income related to that plan.

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CONSOLIDATED INCOME STATEMENTS (USD $) In Millions, except Per Share data, unless otherwise specified	12 Months Ended
	Dec. 27, 2013	Dec. 28, 2012		Dec. 30, 2011
Income Statement [Abstract]
Revenue	$ 12,026	$ 11,763	[1]	$ 11,795	[1]
Expense
Labor and Fringe	3,138	3,020	[1]	3,073	[1]
Materials, Supplies and Other	2,275	2,156	[1]	2,229	[1]
Fuel	1,656	1,672	[1]	1,668	[1]
Depreciation	1,104	1,059	[1]	976	[1]
Equipment and Other Rents	380	392	[1]	379	[1]
Total Expense	8,553	8,299	[1]	8,325	[1]
Operating Income	3,473	3,464	[1]	3,470	[1]
Interest Expense	(562)	(566)	[1]	(552)	[1]
Other Income - Net	11	73	[1]	22	[1]
Earnings Before Income Taxes	2,922	2,971	[1]	2,940	[1]
Income Tax Expense	(1,058)	(1,108)	[1]	(1,086)	[1]
Net Earnings	$ 1,864	$ 1,863	[1]	$ 1,854	[1]
Net Earnings Per Share, Basic
Earnings Per Share, Basic (dollars per share)	$ 1.83	$ 1.80	[1]	$ 1.71	[1]
Net Earnings Per Common Share, Assuming Dilution
Earnings Per Share, Assuming Dilution (dollars per share)	$ 1.83	$ 1.79	[1]	$ 1.70	[1]
Average Common Shares Outstanding	1,019	1,038	[1]	1,083	[1]
Average Common Shares Outstanding, Assuming Dilution (shares)	1,019	1,040	[1]	1,089	[1]
Cash Dividends Paid Per Common Share	$ 0.59	$ 0.54	[1]	$ 0.45	[1]

[1] See the revision of prior period financial statements in Note 1. Nature of Operations and Significant Accounting Policies.

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Nature of Operations and Significant Accounting Policies (Other Items - Share Repurchases) (Details) (USD $) Share data in Millions, unless otherwise specified	1 Months Ended	12 Months Ended
	Apr. 30, 2013	Dec. 27, 2013	Dec. 28, 2012		Dec. 30, 2011
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Share repurchase program	$ 1,000,000,000
Shares acquired, repurchase amount		$ 353,000,000	$ 734,000,000	[1]	$ 1,564,000,000	[1]
Stock Repurchased and Retired During Period, Shares		14	34		67

[1] See the revision of prior period financial statements in Note 1. Nature of Operations and Significant Accounting Policies.

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Summarized Consolidating Financial Data (Balance Sheets) (Details) (USD $) In Millions, unless otherwise specified	Dec. 27, 2013		Dec. 28, 2012		Dec. 30, 2011		Dec. 31, 2010
Current Assets
Cash and Cash Equivalents	$ 592	[1]	$ 784	[1]	$ 783	[1]	$ 1,292	[1]
Short-term Investments	487	[1]	587	[1]
Accounts Receivable - Net	1,052	[1]	1,114	[1]	1,147	[1]
Receivable from Affiliates	0		0
Materials and Supplies	252	[1]	274	[1]
Deferred Income Taxes	155	[1]	119	[1]
Other Current Assets	64	[1]	75	[1]
Total Current Assets	2,602		2,953	[1]	2,953
Properties	37,184	[1]	35,279	[1]
Accumulated Depreciation	(9,893)	[1]	(9,229)	[1]
Properties - Net	27,291		26,050	[1]
Other Long-term Assets	591	[1]	514	[1]
Total Assets	31,782		30,723	[1]	29,491
Current Liabilities
Accounts Payable	957	[1]	948	[1]	954	[1]
Labor and Fringe Benefits Payable	587	[1]	468	[1]
Payable to Affiliates	0		0
Current Maturities of Long-term Debt	533	[1]	780	[1]
Income and Other Taxes Payable	91	[1]	169	[1]	210	[1]
Other Current Liabilities	105	[1]	140	[1]
Total Current Liabilities	2,424		2,645	[1]	2,575
Long-term Debt	9,022	[1]	9,052	[1]
Deferred Income Taxes	8,662	[1]	8,096	[1]
Other Long-term Liabilities	870	[1]	1,457	[1]
Total Liabilities	21,278		21,587	[1]	20,893
Common Stock, $1 Par Value	1,009	[1]	1,020	[1]
Other Capital	61	[1]	28	[1]
Retained Earnings	9,936	[1]	9,010	[1]	8,405	[1]
Accumulated Other Comprehensive Loss	(523)	[1]	(936)	[1]	(875)		(771)
Noncontrolling Minority Interest	21	[1]	14	[1]
Total Shareholders' Equity	10,504		9,136	[1]	8,598		8,798
Total Liabilities and Shareholders' Equity	31,782		30,723	[1]	29,491
Investments in Conrail
Current Assets
Investment in Affiliates, Subsidiaries, and Joint Ventures	752	[1]	695	[1]
Affiliates and Other Companies
Current Assets
Investment in Affiliates, Subsidiaries, and Joint Ventures	546	[1]	511	[1]
Investments in Consolidated Subsidiaries
Current Assets
Investment in Affiliates, Subsidiaries, and Joint Ventures	0		0
CSX Corporation
Current Assets
Cash and Cash Equivalents	439		481		549		1,100
Short-term Investments	472		555
Accounts Receivable - Net	3		3
Receivable from Affiliates	1,141		993
Materials and Supplies	0		0
Deferred Income Taxes	(5)		52
Other Current Assets	1		11
Total Current Assets	2,051		2,095
Properties	1		8
Accumulated Depreciation	(1)		(8)
Properties - Net	0		0
Other Long-term Assets	217		186
Total Assets	22,455		21,159
Current Liabilities
Accounts Payable	110		133
Labor and Fringe Benefits Payable	38		35
Payable to Affiliates	3,298		2,679
Current Maturities of Long-term Debt	200		700
Income and Other Taxes Payable	(397)		(262)
Other Current Liabilities	0		(1)
Total Current Liabilities	3,249		3,284
Long-term Debt	8,308		8,005
Deferred Income Taxes	(64)		(153)
Other Long-term Liabilities	479		901
Total Liabilities	11,972		12,037
Common Stock, $1 Par Value	1,009		1,020
Other Capital	61		28
Retained Earnings	9,936		9,010
Accumulated Other Comprehensive Loss	(523)		(936)
Noncontrolling Minority Interest	0		0
Total Shareholders' Equity	10,483		9,122
Total Liabilities and Shareholders' Equity	22,455		21,159
CSX Corporation | Investments in Conrail
Current Assets
Investment in Affiliates, Subsidiaries, and Joint Ventures	0		0
CSX Corporation | Affiliates and Other Companies
Current Assets
Investment in Affiliates, Subsidiaries, and Joint Ventures	(39)		(39)
CSX Corporation | Investments in Consolidated Subsidiaries
Current Assets
Investment in Affiliates, Subsidiaries, and Joint Ventures	20,226		18,917
CSX Transportation
Current Assets
Cash and Cash Equivalents	91		235		154		118
Short-term Investments	0		0
Accounts Receivable - Net	240		579
Receivable from Affiliates	2,635		1,798
Materials and Supplies	252		274
Deferred Income Taxes	161		62
Other Current Assets	57		64
Total Current Assets	3,436		3,012
Properties	34,987		33,333
Accumulated Depreciation	(8,778)		(8,225)
Properties - Net	26,209		25,108
Other Long-term Assets	388		368
Total Assets	30,645		29,081
Current Liabilities
Accounts Payable	809		780
Labor and Fringe Benefits Payable	491		391
Payable to Affiliates	535		411
Current Maturities of Long-term Debt	333		80
Income and Other Taxes Payable	479		418
Other Current Liabilities	103		139
Total Current Liabilities	2,886		2,343
Long-term Debt	714		1,047
Deferred Income Taxes	8,548		8,131
Other Long-term Liabilities	512		656
Total Liabilities	12,891		12,433
Common Stock, $1 Par Value	181		181
Other Capital	5,077		5,672
Retained Earnings	12,514		10,874
Accumulated Other Comprehensive Loss	(43)		(102)
Noncontrolling Minority Interest	25		23
Total Shareholders' Equity	17,754		16,648
Total Liabilities and Shareholders' Equity	30,645		29,081
CSX Transportation | Investments in Conrail
Current Assets
Investment in Affiliates, Subsidiaries, and Joint Ventures	0		0
CSX Transportation | Affiliates and Other Companies
Current Assets
Investment in Affiliates, Subsidiaries, and Joint Ventures	612		593
CSX Transportation | Investments in Consolidated Subsidiaries
Current Assets
Investment in Affiliates, Subsidiaries, and Joint Ventures	0		0
Eliminations and Other
Current Assets
Cash and Cash Equivalents	62		68		80		74
Short-term Investments	15		32
Accounts Receivable - Net	809		532
Receivable from Affiliates	(3,776)		(2,791)
Materials and Supplies	0		0
Deferred Income Taxes	(1)		5
Other Current Assets	6		0
Total Current Assets	(2,885)		(2,154)
Properties	2,196		1,938
Accumulated Depreciation	(1,114)		(996)
Properties - Net	1,082		942
Other Long-term Assets	(14)		(40)
Total Assets	(21,318)		(19,517)
Current Liabilities
Accounts Payable	38		35
Labor and Fringe Benefits Payable	58		42
Payable to Affiliates	(3,833)		(3,090)
Current Maturities of Long-term Debt	0		0
Income and Other Taxes Payable	9		13
Other Current Liabilities	2		2
Total Current Liabilities	(3,711)		(2,982)
Long-term Debt	0		0
Deferred Income Taxes	178		118
Other Long-term Liabilities	(121)		(100)
Total Liabilities	(3,585)		(2,883)
Common Stock, $1 Par Value	(181)		(181)
Other Capital	(5,077)		(5,672)
Retained Earnings	(12,514)		(10,874)
Accumulated Other Comprehensive Loss	43		102
Noncontrolling Minority Interest	(4)		(9)
Total Shareholders' Equity	(17,733)		(16,634)
Total Liabilities and Shareholders' Equity	(21,318)		(19,517)
Eliminations and Other | Investments in Conrail
Current Assets
Investment in Affiliates, Subsidiaries, and Joint Ventures	752		695
Eliminations and Other | Affiliates and Other Companies
Current Assets
Investment in Affiliates, Subsidiaries, and Joint Ventures	(27)		(43)
Eliminations and Other | Investments in Consolidated Subsidiaries
Current Assets
Investment in Affiliates, Subsidiaries, and Joint Ventures	(20,226)		(18,917)
Casualty, Environmental and Other [Member]
Current Liabilities
Loss Contingency, Accrual, Noncurrent	300		337
Loss Contingency, Accrual, Current	151		140
Casualty, Environmental and Other [Member] | CSX Corporation
Current Liabilities
Loss Contingency, Accrual, Noncurrent	0		0
Loss Contingency, Accrual, Current	0		0
Casualty, Environmental and Other [Member] | CSX Transportation
Current Liabilities
Loss Contingency, Accrual, Noncurrent	231		256
Loss Contingency, Accrual, Current	136		124
Casualty, Environmental and Other [Member] | Eliminations and Other
Current Liabilities
Loss Contingency, Accrual, Noncurrent	69		81
Loss Contingency, Accrual, Current	$ 15		$ 16

[1] See the revision of prior period financial statements in Note 1. Nature of Operations and Significant Accounting Policies.

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CONSOLIDATED CASH FLOW STATEMENTS (USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 27, 2013		Dec. 28, 2012		Dec. 30, 2011
OPERATING ACTIVITIES
Net Earnings	$ 1,864		$ 1,863	[1]	$ 1,854	[1]
Adjustments to Reconcile Net Earnings to Net Cash
Depreciation	1,104		1,059	[1]	976	[1]
Deferred Income Taxes	300		592	[1]	609	[1]
Contributions to Qualified Pension Plans	0		(275)	[1]	0	[1]
Gain on Property Dispositions	(70)		(166)	[1]	(25)	[1]
Other Operating Activities	(35)		(64)	[1]	(10)	[1]
Changes in Operating Assets and Liabilities:
Accounts Receivable	(6)		61	[1]	(117)	[1]
Other Current Assets	36		(32)	[1]	(23)	[1]
Accounts Payable	28		(4)	[1]	76	[1]
Income and Other Taxes Payable	(67)		(14)	[1]	116	[1]
Other Current Liabilities	113		(74)	[1]	35	[1]
Net Cash Provided by Operating Activities	3,267		2,946	[1]	3,491	[1]
INVESTING ACTIVITIES
Property Additions	(2,313)		(2,341)	[1]	(2,297)	[1]
Purchase of Short-term Investments	(1,256)		(633)	[1]	(492)	[1]
Proceeds from Sales of Short-term Investments	1,401		581	[1]	74	[1]
Proceeds from Property Dispositions	53		186	[1]	240	[1]
Other Investing Activities	(112)		(70)	[1]	(112)	[1]
Net Cash Used in Investing Activities	(2,227)		(2,277)	[1]	(2,587)	[1]
FINANCING ACTIVITIES
Long-term Debt Issued	500		1,100	[1]	1,200	[1]
Long-term Debt Repaid	(780)		(508)	[1]	(605)	[1]
Dividends Paid	(600)		(558)	[1]	(480)	[1]
Stock Options Exercised	9		14	[1]	29	[1]
Shares Repurchased	(353)		(734)	[1]	(1,564)	[1]
Other Financing Activities	(8)		18	[1]	7	[1]
Net Cash Used in Financing Activities	(1,232)		(668)	[1]	(1,413)	[1]
Net (Decrease) Increase in Cash and Cash Equivalents	(192)		1	[1]	(509)	[1]
CASH AND CASH EQUIVALENTS
Cash and Cash Equivalents at Beginning of Period	784	[1]	783	[1]	1,292	[1]
Cash and Cash Equivalents at End of Period	592	[1]	784	[1]	783	[1]
SUPPLEMENTAL CASH FLOW INFORMATION
Interest Paid - Net of Amounts Capitalized	595		592	[1]	574	[1]
Income Taxes Paid	$ 824		$ 506	[1]	$ 359	[1]

[1] See the revision of prior period financial statements in Note 1. Nature of Operations and Significant Accounting Policies.

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Quarterly Financial Data (Unaudited) (Details) (USD $) In Millions, except Per Share data, unless otherwise specified	3 Months Ended												12 Months Ended
	Dec. 27, 2013	Sep. 27, 2013	Jun. 28, 2013	Mar. 29, 2013	Dec. 30, 2012	Sep. 28, 2012	Jun. 29, 2012	Mar. 30, 2012	Dec. 30, 2011	Sep. 30, 2011	Jul. 01, 2011	Apr. 01, 2011	Dec. 27, 2013	Dec. 28, 2012		Dec. 30, 2011
Selected Quarterly Financial Information [Abstract]
Revenue	$ 3,032	$ 2,985	$ 3,046	$ 2,963	$ 2,895	$ 2,864	$ 2,986	$ 3,018	$ 2,993	$ 2,962	$ 3,013	$ 2,827	$ 12,026	$ 11,763	[1]	$ 11,795	[1]
Operating Income	813	840	940	880	815	824	917	908	883	877	920	790	3,473	3,464	[1]	3,470	[1]
Net Earnings	$ 426	$ 455	$ 521	$ 462	$ 449	$ 437	$ 496	$ 481	$ 483	$ 463	$ 502	$ 406	$ 1,864	$ 1,863	[1]	$ 1,854	[1]
Earnings Per Share, Basic (dollars per share)	$ 0.42	$ 0.45	$ 0.51	$ 0.45	$ 0.44	$ 0.42	$ 0.48	$ 0.46	$ 0.46	$ 0.43	$ 0.46	$ 0.37	$ 1.83	$ 1.80	[1]	$ 1.71	[1]
Earnings Per Share, Assuming Dilution (dollars per share)	$ 0.42	$ 0.45	$ 0.51	$ 0.45	$ 0.44	$ 0.42	$ 0.48	$ 0.46	$ 0.46	$ 0.43	$ 0.45	$ 0.36	$ 1.83	$ 1.79	[1]	$ 1.70	[1]

[1] See the revision of prior period financial statements in Note 1. Nature of Operations and Significant Accounting Policies.

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Properties (Detail of Net Properties) (Details) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 27, 2013		Dec. 28, 2012
Property, Plant and Equipment, Net, by Type [Abstract]
Cost	$ 37,184	[1]	$ 35,279	[1]
Accumulated Depreciation	(9,893)	[1]	(9,229)	[1]
Properties - Net	27,291		26,050	[1]
Road - Total [Member]
Property, Plant and Equipment, Net, by Type [Abstract]
Cost	24,618		23,419
Accumulated Depreciation	(5,592)		(5,153)
Properties - Net	19,026		18,266
Road - Rail and Other Track Material [Member]
Property, Plant and Equipment, Net, by Type [Abstract]
Cost	6,452		6,177
Accumulated Depreciation	(1,270)		(1,131)
Properties - Net	5,182		5,046
Annual Depreciation Rate	2.90%		2.90%
Depreciation Method	Group Life		Group Life
Road - Ties [Member]
Property, Plant and Equipment, Net, by Type [Abstract]
Cost	4,534		4,287
Accumulated Depreciation	(947)		(861)
Properties - Net	3,587		3,426
Annual Depreciation Rate	4.00%		4.00%
Depreciation Method	Group Life		Group Life
Road - Grading [Member]
Property, Plant and Equipment, Net, by Type [Abstract]
Cost	2,425		2,407
Accumulated Depreciation	(448)		(414)
Properties - Net	1,977		1,993
Annual Depreciation Rate	1.50%		1.50%
Depreciation Method	Group Life		Group Life
Road - Ballast [Member]
Property, Plant and Equipment, Net, by Type [Abstract]
Cost	2,612		2,528
Accumulated Depreciation	(645)		(624)
Properties - Net	1,967		1,904
Annual Depreciation Rate	2.80%		2.80%
Depreciation Method	Group Life		Group Life
Road - Bridges, Trestles, and Culverts [Member]
Property, Plant and Equipment, Net, by Type [Abstract]
Cost	2,008		1,962
Accumulated Depreciation	(250)		(224)
Properties - Net	1,758		1,738
Annual Depreciation Rate	1.60%		1.60%
Depreciation Method	Group Life		Group Life
Road - Signals and Interlockers [Member]
Property, Plant and Equipment, Net, by Type [Abstract]
Cost	1,922		1,787
Accumulated Depreciation	(291)		(302)
Properties - Net	1,631		1,485
Annual Depreciation Rate	3.40%		3.40%
Depreciation Method	Group Life		Group Life
Road - Buildings [Member]
Property, Plant and Equipment, Net, by Type [Abstract]
Cost	1,011		926
Accumulated Depreciation	(355)		(316)
Properties - Net	656		610
Annual Depreciation Rate	2.50%		2.50%
Depreciation Method	Group Life		Group Life
Road - Other [Member]
Property, Plant and Equipment, Net, by Type [Abstract]
Cost	3,654		3,345
Accumulated Depreciation	(1,386)		(1,281)
Properties - Net	2,268		2,064
Annual Depreciation Rate	4.70%		4.70%
Depreciation Method	Group Life		Group Life
Total Equipment [Member]
Property, Plant and Equipment, Net, by Type [Abstract]
Cost	9,764		9,301
Accumulated Depreciation	(4,225)		(4,008)
Properties - Net	5,539		5,293
Equipment - Locomotive [Member]
Property, Plant and Equipment, Net, by Type [Abstract]
Cost	4,987		4,747
Accumulated Depreciation	(2,176)		(2,079)
Properties - Net	2,811		2,668
Annual Depreciation Rate	3.60%		3.60%
Depreciation Method	Group Life		Group Life
Equipment - Freight Cars [Member]
Property, Plant and Equipment, Net, by Type [Abstract]
Cost	3,111		3,088
Accumulated Depreciation	(1,135)		(1,119)
Properties - Net	1,976		1,969
Annual Depreciation Rate	3.10%		3.10%
Depreciation Method	Group Life		Group Life
Equipment - Work Equipment and Other [Member]
Property, Plant and Equipment, Net, by Type [Abstract]
Cost	1,666		1,466
Accumulated Depreciation	(914)		(810)
Properties - Net	752		656
Annual Depreciation Rate	7.10%		7.10%
Depreciation Method	Group Life		Group Life
Land [Member]
Property, Plant and Equipment, Net, by Type [Abstract]
Cost	1,842		1,745
Properties - Net	1,842		1,745
Construction in Progress [Member]
Property, Plant and Equipment, Net, by Type [Abstract]
Cost	854		602
Properties - Net	854		602
Other properties [Member]
Property, Plant and Equipment, Net, by Type [Abstract]
Cost	106		212
Accumulated Depreciation	(76)		(68)
Properties - Net	$ 30		$ 144
Depreciation Method	Straight Line		Straight Line
Minimum [Member] | Road - Total [Member]
Property, Plant and Equipment, Net, by Type [Abstract]
Estimated useful life	6 years		6 years
Minimum [Member] | Road - Other [Member]
Property, Plant and Equipment, Net, by Type [Abstract]
Estimated useful life	6 years
Minimum [Member] | Total Equipment [Member]
Property, Plant and Equipment, Net, by Type [Abstract]
Estimated useful life	5 years		5 years
Minimum [Member] | Other properties [Member]
Property, Plant and Equipment, Net, by Type [Abstract]
Estimated useful life	4 years		4 years
Maximum [Member] | Road - Total [Member]
Property, Plant and Equipment, Net, by Type [Abstract]
Estimated useful life	80 years		80 years
Maximum [Member] | Road - Grading [Member]
Property, Plant and Equipment, Net, by Type [Abstract]
Estimated useful life	80 years
Maximum [Member] | Total Equipment [Member]
Property, Plant and Equipment, Net, by Type [Abstract]
Estimated useful life	38 years		38 years
Maximum [Member] | Equipment - Work Equipment and Other [Member]
Property, Plant and Equipment, Net, by Type [Abstract]
Estimated useful life	38 years
Maximum [Member] | Other properties [Member]
Property, Plant and Equipment, Net, by Type [Abstract]
Estimated useful life	30 years		30 years

[1] See the revision of prior period financial statements in Note 1. Nature of Operations and Significant Accounting Policies.

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Other Income - Net (Tables)

12 Months Ended

Dec. 27, 2013

Other Income and Expenses [Abstract]

Schedule of other Income - Net

Other income – net consisted of the following:

	Fiscal Years
(Dollars in Millions)	2013			2012			2011
Interest Income	$	8		$	5		$	5
Income from Real Estate Operations	23			81			25
Miscellaneous Expense	(20		)	(13		)	(8		)
Total Other Income - Net	$	11		$	73		$	22
Gross Revenue from Real Estate
Operations included above	$	48		$	106		$	51

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Commitments and Contingencies (Environmental Matters) (Details) (Environmental Litigation [Member])	12 Months Ended
	Dec. 27, 2013 counterparty mi company
Environmental Litigation [Member]
Loss Contingencies [Line Items]
Additional Companies Involved in Passaic River Complaint	5
Number of miles pertaining to Passaic River tidal reach required to be studied by EPA	17
Number Of Potentially Responsible Parties In Connection With Environmental Liabilities For Operations Conducted Near Passaic River	70

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Other Comprehensive Income

12 Months Ended

Dec. 27, 2013

Equity [Abstract]

Other Comprehensive Income

Other Comprehensive Income

CSX reports comprehensive earnings or loss in accordance with the Comprehensive Income Topic in the ASC in the Consolidated Comprehensive Income Statement. Total comprehensive earnings are defined as all changes in shareholders' equity during a period, other than those resulting from investments by and distributions to shareholders (e.g. issuance of equity securities and dividends). Generally, for CSX, total comprehensive earnings equals net earnings plus or minus adjustments for pension and other post-retirement liabilities. Total comprehensive earnings represent the activity for a period net of tax and were $2.3 billion, $1.8 billion and $1.8 billion for 2013, 2012 and 2011, respectively. See the revision of prior period financial statements in Note 1. Nature of Operations and Significant Accounting Policies.

While total comprehensive earnings is the activity in a period and is largely driven by net earnings in that period, accumulated other comprehensive income or loss (“AOCI”) represents the cumulative balance of other comprehensive income, net of tax, as of the balance sheet date. For CSX, AOCI is primarily the cumulative balance related to pension and other post-retirement benefit adjustments and CSX's share of AOCI of equity method investees. Changes in the AOCI balance by component are shown in the table below.

	Pension and Other Post-Employment Benefits			Other (a)			Accumulated Other Comprehensive Income (Loss)
(Dollars in millions)
Balance December 31, 2010, Net of Tax	$	(711	)	$	(60	)	$	(771	)
Other Comprehensive Loss
Loss Before Reclassifications	(216		)	(13		)	(229		)
Amounts Reclassified to Net Earnings(b)	75			(1		)	74
Tax (Expense) Benefit	53			(2		)	51
Total Other Comprehensive Loss	(88		)	(16		)	(104		)
Balance December 30, 2011, Net of Tax	(799		)	(76		)	(875		)
Other Comprehensive Loss
Loss Before Reclassifications	(172		)	(9		)	(181		)
Amounts Reclassified to Net Earnings(b)	88			(1		)	87
Tax Benefit	32			1			33
Total Other Comprehensive Loss	(52		)	(9		)	(61		)
Balance December 28, 2012, Net of Tax	(851		)	(85		)	(936		)
Other Comprehensive Loss
Income Before Reclassifications	510			24			534
Amounts Reclassified to Net Earnings(b)	111			(2		)	109
Tax (Expense) Benefit	(232		)	2			(230		)
Total Other Comprehensive Income	389			24			413
Balance December 27, 2013, Net of Tax	$	(462	)	$	(61	)	$	(523	)

^(a) Other primarily represents CSX's share of AOCI of equity method investees. Amounts reclassified to net earnings are included in other income - net on the consolidated income statements.

^(b) Amounts reclassified to net earnings primarily relate to the amortization of actuarial losses and are included in labor and fringe on the consolidated income statements. See Note 8. Employee Benefit Plans for further information.

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Income Taxes (Tables)

12 Months Ended

Dec. 27, 2013

Income Tax Disclosure [Abstract]

Schedule of breakdown of income tax expense between current and deferred

The breakdown of income tax expense between current and deferred is as follows:

	Fiscal Years
(Dollars in Millions)	2013		2012 (a)		2011 (a)
Current:
Federal	$	671	$	450	$	370
State	87		66		107
Subtotal Current	758		516		477
Deferred:
Federal	285		530		614
State	15		62		(5		)
Subtotal Deferred	300		592		609
Total	$	1,058	$	1,108	$	1,086

(a) See the revision of prior period financial statements in Note 1. Nature of Operations and Significant Accounting Policies.

Schedule of income tax expense reconciled to tax computed at statutory rates

	Fiscal Years
(Dollars In Millions)	2013					2012 (a)					2011 (a)
Federal Income Taxes	$	1,023		35.0	%	$	1,040		35.0	%	$	1,029		34.9	%
State Income Taxes	65			2.2	%	81			2.8	%	65			2.2	%
Other	(30		)	(1.0	)%	(13		)	(0.4	)%	(8		)	(0.3	)%
Income Tax Expense/Rate	$	1,058		36.2	%	$	1,108		37.4	%	$	1,086		36.8	%

(a) See the revision of prior period financial statements in Note 1. Nature of Operations and Significant Accounting Policies.

Schedule of significant components of deferred income tax assets and liabilities

The significant components of deferred income tax assets and liabilities include:

	2013				2012
(Dollars in Millions)	Assets		Liabilities		Assets		Liabilities
Pension Plans	$	67	$	—	$	249	$	—
Other Employee Benefit Plans	299		—		292		—
Accelerated Depreciation	—		8,868		—		8,544
Other	257		262		278		252
Total	$	623	$	9,130	$	819	$	8,796
Net Deferred Income Tax Liabilities			$	8,507			$	7,977

Schedule of change to total gross unrecognized tax benefits

The change to the total gross unrecognized tax benefits and prior year audit resolutions of the Company during the fiscal year ended December 2013 is reconciled as follows:

Uncertain Tax Positions:	Fiscal Year
(Dollars in Millions)	2013			2012			2011
Balance at beginning of the year	$	24		$	22		$	20
Additions based on tax positions related to current year	2			6			1
Additions based on tax positions related to prior years	5			3			10
Reductions based on tax positions related to prior years	(6		)	(1		)	(3		)
Settlements with taxing authorities	—			—			(5		)
Lapse of statute of limitations	(2		)	(6		)	(1		)
Balance at end of the year	$	23		$	24		$	22

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Summarized Consolidating Financial Data

12 Months Ended

Dec. 27, 2013

Summarized Consolidating Financial Data [Abstract]

Summarized Consolidating Financial Data

Summarized Consolidating Financial Data

In 2007, CSXT, a wholly-own subsidiary of CSX Corporation, sold secured equipment notes maturing in 2023, and in 2008, CSXT sold additional secured equipment notes maturing in 2014 in registered public offerings.  CSX has fully and unconditionally guaranteed the notes. In connection with the notes, the Company is providing the following condensed consolidating financial information in accordance with SEC disclosure requirements. Each entity in the consolidating financial information follows the same accounting policies as described in the consolidated financial statements, except for the use of the equity method of accounting to reflect ownership interests in subsidiaries which are eliminated upon consolidation and the allocation of certain expenses of CSX incurred for the benefit of its subsidiaries.

Condensed consolidating financial information for the obligor, CSXT, and parent guarantor, CSX, is shown in the tables below. Prior period financial information of CSXT has been revised. See the revision of prior period financial statements in Note 1. Nature of Operations and Significant Accounting Policies.

NOTE 16.  Summarized Consolidating Financial Data, continued

Consolidating Income Statements

(Dollars in Millions)

Fiscal Year Ended December 2013	CSX Corporation			CSX Transportation			Eliminations and Other			Consolidated
Revenue	$	—		$	11,950		$	76		$	12,026
Expense	(371		)	9,091			(167		)	8,553
Operating Income	371			2,859			243			3,473
Equity in Earnings of Subsidiaries	1,964			(1		)	(1,963		)	—
Interest Expense	(516		)	(62		)	16			(562		)
Other Income - Net	(7		)	(2		)	20			11
Earnings Before Income Taxes	1,812			2,794			(1,684		)	2,922
Income Tax Benefit (Expense)	52			(1,028		)	(82		)	(1,058		)
Net Earnings	$	1,864		$	1,766		$	(1,766	)	$	1,864
Total Comprehensive Earnings	$	2,277		$	1,825		$	(1,825	)	$	2,277
Fiscal Year Ended December 2012
Revenue	$	—		$	11,696		$	67		$	11,763
Expense	(355		)	8,779			(125		)	8,299
Operating Income	355			2,917			192			3,464
Equity in Earnings of Subsidiaries	1,992			(2		)	(1,990		)	—
Interest Expense	(513		)	(70		)	17			(566		)
Other Income - Net	(3		)	61			15			73
Earnings Before Income Taxes	1,831			2,906			(1,766		)	2,971
Income Tax Benefit (Expense)	32			(1,065		)	(75		)	(1,108		)
Net Earnings	$	1,863		$	1,841		$	(1,841	)	$	1,863
Total Comprehensive Earnings	$	1,802		$	1,818		$	(1,818	)	$	1,802
Fiscal Year Ended December 2011
Revenue	$	—		$	11,728		$	67		$	11,795
Expense	(278		)	8,679			(76		)	8,325
Operating Income	278			3,049			143			3,470
Equity in Earnings of Subsidiaries	1,979			3			(1,982		)	—
Interest Expense	(496		)	(83		)	27			(552		)
Other Income - Net	2			19			1			22
Earnings Before Income Taxes	1,763			2,988			(1,811		)	2,940
Income Tax Benefit (Expense)	91			(1,101		)	(76		)	(1,086		)
Net Earnings	$	1,854		$	1,887		$	(1,887	)	$	1,854
Total Comprehensive Earnings	$	1,750		$	1,873		$	(1,873	)	$	1,750

NOTE 16.  Summarized Consolidating Financial Data, continued

Consolidating Balance Sheets

(Dollars in Millions)

As of December 27, 2013	CSX Corporation			CSX Transportation			Eliminations and Other			Consolidated
ASSETS
Current Assets:
Cash and Cash Equivalents	$	439		$	91		$	62		$	592
Short-term Investments	472			—			15			487
Accounts Receivable - Net	3			240			809			1,052
Receivable from Affiliates	1,141			2,635			(3,776		)	—
Materials and Supplies	—			252			—			252
Deferred Income Taxes	(5		)	161			(1		)	155
Other Current Assets	1			57			6			64
Total Current Assets	2,051			3,436			(2,885		)	2,602
Properties	1			34,987			2,196			37,184
Accumulated Depreciation	(1		)	(8,778		)	(1,114		)	(9,893		)
Properties - Net	—			26,209			1,082			27,291
Investments in Conrail	—			—			752			752
Affiliates and Other Companies	(39		)	612			(27		)	546
Investment in Consolidated Subsidiaries	20,226			—			(20,226		)	—
Other Long-term Assets	217			388			(14		)	591
Total Assets	$	22,455		$	30,645		$	(21,318	)	$	31,782
LIABILITIES AND SHAREHOLDERS' EQUITY
Current Liabilities:
Accounts Payable	$	110		$	809		$	38		$	957
Labor and Fringe Benefits Payable	38			491			58			587
Payable to Affiliates	3,298			535			(3,833		)	—
Casualty, Environmental and Other Reserves	—			136			15			151
Current Maturities of Long-term Debt	200			333			—			533
Income and Other Taxes Payable	(397		)	479			9			91
Other Current Liabilities	—			103			2			105
Total Current Liabilities	3,249			2,886			(3,711		)	2,424
Casualty, Environmental and Other Reserves	—			231			69			300
Long-term Debt	8,308			714			—			9,022
Deferred Income Taxes	(64		)	8,548			178			8,662
Other Long-term Liabilities	479			512			(121		)	870
Total Liabilities	11,972			12,891			(3,585		)	21,278
Shareholders' Equity:
Common Stock, $1 Par Value	1,009			181			(181		)	1,009
Other Capital	61			5,077			(5,077		)	61
Retained Earnings	9,936			12,514			(12,514		)	9,936
Accumulated Other Comprehensive Loss	(523		)	(43		)	43			(523		)
Noncontrolling Minority Interest	—			25			(4		)	21
Total Shareholders' Equity	10,483			17,754			(17,733		)	10,504
Total Liabilities and Shareholders' Equity	$	22,455		$	30,645		$	(21,318	)	$	31,782

NOTE 16.  Summarized Consolidating Financial Data, continued

Consolidating Balance Sheets

(Dollars in Millions)

As of December 28, 2012	CSX Corporation			CSX Transportation			Eliminations and Other			Consolidated
ASSETS
Current Assets
Cash and Cash Equivalents	$	481		$	235		$	68		$	784
Short-term Investments	555			—			32			587
Accounts Receivable - Net	3			579			532			1,114
Receivable from Affiliates	993			1,798			(2,791		)	—
Materials and Supplies	—			274			—			274
Deferred Income Taxes	52			62			5			119
Other Current Assets	11			64			—			75
Total Current Assets	2,095			3,012			(2,154		)	2,953
Properties	8			33,333			1,938			35,279
Accumulated Depreciation	(8		)	(8,225		)	(996		)	(9,229		)
Properties - Net	—			25,108			942			26,050
Investments in Conrail	—			—			695			695
Affiliates and Other Companies	(39		)	593			(43		)	511
Investment in Consolidated Subsidiaries	18,917			—			(18,917		)	—
Other Long-term Assets	186			368			(40		)	514
Total Assets	$	21,159		$	29,081		$	(19,517	)	$	30,723
LIABILITIES AND SHAREHOLDERS' EQUITY
Current Liabilities
Accounts Payable	$	133		$	780		$	35		$	948
Labor and Fringe Benefits Payable	35			391			42			468
Payable to Affiliates	2,679			411			(3,090		)	—
Casualty, Environmental and Other Reserves	—			124			16			140
Current Maturities of Long-term Debt	700			80			—			780
Income and Other Taxes Payable	(262		)	418			13			169
Other Current Liabilities	(1		)	139			2			140
Total Current Liabilities	3,284			2,343			(2,982		)	2,645
Casualty, Environmental and Other Reserves	—			256			81			337
Long-term Debt	8,005			1,047			—			9,052
Deferred Income Taxes	(153		)	8,131			118			8,096
Other Long-term Liabilities	901			656			(100		)	1,457
Total Liabilities	12,037			12,433			(2,883		)	21,587
Shareholders' Equity
Common Stock, $1 Par Value	1,020			181			(181		)	1,020
Other Capital	28			5,672			(5,672		)	28
Retained Earnings	9,010			10,874			(10,874		)	9,010
Accumulated Other Comprehensive Loss	(936		)	(102		)	102			(936		)
Noncontrolling Minority Interest	—			23			(9		)	14
Total Shareholders' Equity	9,122			16,648			(16,634		)	9,136
Total Liabilities and Shareholders' Equity	$	21,159		$	29,081		$	(19,517	)	$	30,723

NOTE 16.  Summarized Consolidating Financial Data, continued

Consolidating Cash Flow Statements

(Dollars in Millions)

Fiscal Year Ended December 2013	CSX Corporation			CSX Transportation			Eliminations and Other			Consolidated
Operating Activities
Net Cash Provided by (Used in) Operating Activities	$	1,004		$	3,005		$	(742	)	$	3,267
Investing Activities
Property Additions	—			(2,053		)	(260		)	(2,313		)
Purchases of Short-term Investments	(1,251		)	—			(5		)	(1,256		)
Proceeds from Sales of Short-term Investments	1,335			—			66			1,401
Proceeds from Property Dispositions	—			53			—			53
Other Investing Activities	(134		)	(315		)	337			(112		)
Net Cash Provided by (Used in) Investing Activities	(50		)	(2,315		)	138			(2,227		)
Financing Activities
Long-term Debt Issued	500			—			—			500
Long-term Debt Repaid	(700		)	(80		)	—			(780		)
Dividends Paid	(600		)	(730		)	730			(600		)
Stock Options Exercised	9			—			—			9
Shares Repurchased	(353		)	—			—			(353		)
Other Financing Activities	148			(24		)	(132		)	(8		)
Net Cash Provided by (Used in) Financing Activities	(996		)	(834		)	598			(1,232		)
Net Decrease in Cash and Cash Equivalents	(42		)	(144		)	(6		)	(192		)
Cash and Cash Equivalents at Beginning of Period	481			235			68			784
Cash and Cash Equivalents at End of Period	$	439		$	91		$	62		$	592

NOTE 16.  Summarized Consolidating Financial Data, continued

Consolidating Cash Flow Statements

(Dollars in Millions)

Fiscal Year Ended December 2012	CSX Corporation			CSX Transportation			Eliminations and Other			Consolidated
Operating Activities
Net Cash Provided by (Used in) Operating Activities	$	579		$	2,716		$	(349	)	$	2,946
Investing Activities
Property Additions	—			(2,104		)	(237		)	(2,341		)
Purchases of Short-term Investments	(605		)	—			(28		)	(633		)
Proceeds from Sales of Short-term Investments	525			—			56			581
Proceeds from Property Dispositions	—			186			—			186
Other Investing Activities	(10		)	102			(162		)	(70		)
Net Cash Provided by (Used in) Investing Activities	(90		)	(1,816		)	(371		)	(2,277		)
Financing Activities
Long-term Debt Issued	1,100			—			—			1,100
Long-term Debt Repaid	(400		)	(106		)	(2		)	(508		)
Dividends Paid	(558		)	(715		)	715			(558		)
Stock Options Exercised	14			—			—			14
Shares Repurchased	(734		)	—			—			(734		)
Other Financing Activities	21			2			(5		)	18
Net Cash Provided by (Used in) Financing Activities	(557		)	(819		)	708			(668		)
Net (Decrease) Increase in Cash and Cash Equivalents	(68		)	81			(12		)	1
Cash and Cash Equivalents at Beginning of Period	549			154			80			783
Cash and Cash Equivalents at End of Period	$	481		$	235		$	68		$	784

NOTE 16.  Summarized Consolidating Financial Data, continued

Consolidating Cash Flow Statements

(Dollars in Millions)

Fiscal Year Ended December 2011	CSX Corporation			CSX Transportation			Eliminations and Other			Consolidated
Operating Activities
Net Cash Provided by (Used in) Operating Activities	$	1,231		$	2,746		$	(486	)	$	3,491
Investing Activities
Property Additions	—			(2,034		)	(263		)	(2,297		)
Purchases of Short-term Investments	(475		)	—			(17		)	(492		)
Proceeds from Sales of Short-term Investments	—			—			74			74
Proceeds from Property Dispositions	—			239			1			240
Other Investing Activities	(20		)	(133		)	41			(112		)
Net Cash Provided by (Used in) Investing Activities	(495		)	(1,928		)	(164		)	(2,587		)
Financing Activities
Long-term Debt Issued	1,200			—			—			1,200
Long-term Debt Repaid	(507		)	(95		)	(3		)	(605		)
Dividends Paid	(480		)	(680		)	680			(480		)
Stock Options Exercised	29			—			—			29
Shares Repurchased	(1,564		)	—			—			(1,564		)
Other Financing Activities	35			(7		)	(21		)	7
Net Cash Provided by (Used in) Financing Activities	(1,287		)	(782		)	656			(1,413		)
Net (Decrease) Increase in Cash and Cash Equivalents	(551		)	36			6			(509		)
Cash and Cash Equivalents at Beginning of Period	1,100			118			74			1,292
Cash and Cash Equivalents at End of Period	$	549		$	154		$	80		$	783

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Employee Benefit Plans (Plan Assets) (Details) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 27, 2013	Dec. 28, 2012
Defined Benefit Plan Disclosure [Line Items]
Distribution of pension plan assets	$ 2,500	$ 2,294
Equity, Percent of Total Assets	100.00%	100.00%
Equity [Member]
Defined Benefit Plan Disclosure [Line Items]
Targeted and established equity allocation (in hundredths)	60.00%
Targeted allocation of total plan assets in domestic equity (in hundredths)	40.00%
Targeted allocation of total plan assets in international equity (in hundredths)	20.00%
Percentage within which the planned allocation is managed (in hundredths)	3.00%
Distribution of pension plan assets	1,619	1,408
Equity, Percent of Total Assets	65.00%	61.00%
Fixed Income Funds [Member]
Defined Benefit Plan Disclosure [Line Items]
Targeted and established equity allocation (in hundredths)	40.00%
Distribution of pension plan assets	795	829
Equity, Percent of Total Assets	32.00%	36.00%
Cash and Cash Equivalents [Member]
Defined Benefit Plan Disclosure [Line Items]
Distribution of pension plan assets	$ 86	$ 57
Equity, Percent of Total Assets	3.00%	3.00%

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CONSOLIDATED STATEMENTS OF CHANGES IN SHAREHOLDERS EQUITY (USD $) In Millions, except Share data in Thousands, unless otherwise specified		Total USD ($)		Common Shares Outstanding	Common Stock and Other Capital USD ($)	Retained Earnings USD ($)		Accumulated Other Comprehensive Income (Loss) USD ($)		Non-controlling Interest USD ($)
Shareholders' Equity, beginning balance at Dec. 31, 2010		$ 8,798			$ 370	$ 9,185	[1]	$ (771)	[2]	$ 14
Common Shares Outstanding, beginning balance at Dec. 31, 2010				1,111,026
Comprehensive Earnings:
Net Earnings	[1]	1,854				1,854
Other Comprehensive (Loss) Income		(104)	[1]					(104)	[2]
Comprehensive Earnings	[1]	1,750
Common stock dividends		(480)				(480)	[1]			0
Share Repurchases (shares)		(67,000)		(67,406)
Share Repurchases		(1,564)			590	(2,154)	[1]
Bond Conversions (shares)				675
Bond Conversions		5			5
Stock Option Exercises and Other (shares)				4,862
Stock Option Exercises and Other		89			90	0	[1]			(1)
Shareholders' Equity, ending balance at Dec. 30, 2011		8,598			1,055	8,405	[1]	(875)	[2]	13
Common Shares Outstanding, ending balance at Dec. 30, 2011				1,049,157
Comprehensive Earnings:
Net Earnings	[1]	1,863				1,863
Other Comprehensive (Loss) Income		(61)	[1]					(61)	[2]
Comprehensive Earnings	[1]	1,802
Common stock dividends		(558)				(558)	[1]			0
Share Repurchases (shares)		(34,000)		(34,088)
Share Repurchases		(734)			(34)	(700)	[1]
Bond Conversions (shares)				155
Bond Conversions		1			1
Stock Option Exercises and Other (shares)				5,261
Stock Option Exercises and Other		27			26					1
Shareholders' Equity, ending balance at Dec. 28, 2012		9,136	[1]		1,048	9,010	[1]	(936)	[2]	14
Common Shares Outstanding, ending balance at Dec. 28, 2012				1,020,485
Comprehensive Earnings:
Net Earnings		1,864				1,864	[1]
Other Comprehensive (Loss) Income		413						413	[2]
Comprehensive Earnings		2,277
Common stock dividends		(600)				(600)	[1]			0
Share Repurchases (shares)		(14,000)		(13,791)
Share Repurchases		(353)			(14)	(339)	[1]
Bond Conversions (shares)				1
Bond Conversions		0			0
Stock Option Exercises and Other (shares)				2,165
Stock Option Exercises and Other		44			36	1	[1]			7
Shareholders' Equity, ending balance at Dec. 27, 2013		$ 10,504			$ 1,070	$ 9,936	[1]	$ (523)	[2]	$ 21
Common Shares Outstanding, ending balance at Dec. 27, 2013				1,008,860

[1] See the revision of prior period financial statements in Note 1. Nature of Operations and Significant Accounting Policies.

[2] Accumulated Other Comprehensive Loss year-end balances shown above are net of tax. The associated taxes were $463 million, $496 million and $266 million for 2011, 2012 and 2013, respectively. For additional information see Note 14, Other Comprehensive Income.

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CONSOLIDATED COMPREHENSIVE INCOME STATEMENTS (USD $) In Millions, unless otherwise specified	3 Months Ended												12 Months Ended
	Dec. 27, 2013	Sep. 27, 2013	Jun. 28, 2013	Mar. 29, 2013	Dec. 30, 2012	Sep. 28, 2012	Jun. 29, 2012	Mar. 30, 2012	Dec. 30, 2011	Sep. 30, 2011	Jul. 01, 2011	Apr. 01, 2011	Dec. 27, 2013		Dec. 28, 2012		Dec. 30, 2011
Net Earnings	$ 426	$ 455	$ 521	$ 462	$ 449	$ 437	$ 496	$ 481	$ 483	$ 463	$ 502	$ 406	$ 1,864		$ 1,863	[1]	$ 1,854	[1]
Other Comprehensive (Loss) Income, Net of Tax													413		(61)	[1]	(104)	[1]
Comprehensive Earnings													2,277		1,802	[1]	1,750	[1]
Pension and Other Post-Employment Benefits
Other Comprehensive (Loss) Income, Net of Tax													389		(52)	[1]	(88)	[1]
Other
Other Comprehensive (Loss) Income, Net of Tax													$ 24	[2]	$ (9)	[1],[2]	$ (16)	[1],[2]

[1] See the revision of prior period financial statements in Note 1. Nature of Operations and Significant Accounting Policies.

[2] Other primarily represents CSX's share of AOCI of equity method investees. Amounts reclassified to net earnings are included in other income - net on the consolidated income statements.

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Debt and Credit Agreements

12 Months Ended

Dec. 27, 2013

Debt Disclosure [Abstract]

Debt and Credit Agreements

Debt and Credit Agreements

Debt was as follows:

	Maturity at December	Average Interest Rates at December	December			December
(Dollars in Millions)	2013	2013	2013			2012
Notes	2014-2044	5.7%	$	8,935		$	9,151
Equipment Obligations(a)	2014-2023	7.3%	602			667
Capital Leases	2014-2026	8.1%	16			12
Convertible Debentures	2021	1.0%	2			2
Subtotal Long-term Debt (including current portion)			$	9,555		$	9,832
Less Debt Due within One Year			(533		)	(780		)
Long-term Debt (excluding current portion)			$	9,022		$	9,052

(a) These obligations are secured by an interest in certain railroad equipment.

For information regarding the fair value of debt, see Note 13, Fair Value Measurements.

Debt Issuance

During 2013, CSX issued $500 million of 3.7% notes due 2023. These notes are included in the consolidated balance sheets under long-term debt and may be redeemed by the Company at any time. The net proceeds were used for general corporate purposes, which may include repayment of indebtedness (including CSX’s 5.30% notes that mature on February 15, 2014) outstanding from time to time, repurchases of CSX’s common stock, capital investment, working capital requirements, improvements in productivity and other cost reductions at CSX’s major transportation units.

Long-term Debt Maturities

(Dollars in Millions)	Maturities as of
Fiscal Years Ending	December 2013
2014	$	533
2015	629
2016	22
2017	631
2018	619
Thereafter	7,121
Total Long-term Debt Maturities (including current portion)	$	9,555

NOTE 9.  Debt and Credit Agreements, continued

Credit Facilities

CSX has a $1 billion unsecured, revolving credit facility backed by a diverse syndicate of banks. This facility expires in September 2016, and as of the date of this filing, the Company has no outstanding balances under this facility. The facility allows borrowings at floating (LIBOR-based) interest rates, plus a spread, depending upon CSX's senior unsecured debt ratings. LIBOR is the London Interbank Offered Rate which is a daily reference rate based on the interest rates at which banks offer to lend unsecured funds.

Commitment fees and interest rates payable under the facility were similar to fees and rates available to comparably rated investment-grade borrowers. At December 2013, CSX was in compliance with all covenant requirements under the facilities.

Receivables Securitization Facility

The Company's $250 million receivables securitization facility has a 364-day term and expires in December 2014. The purpose of this facility is to provide an alternative to commercial paper and a low cost source of short-term liquidity. The Company anticipates either renewing the facility or replacing it with another liquidity-based solution. Under the terms of this facility, CSX Transportation transfers eligible third-party receivables to CSX Trade Receivables, LLC ("CSX Trade Receivables"), a bankruptcy-remote special purpose subsidiary. A separate subsidiary of CSX services the receivables. Upon transfer, the receivables become assets of CSX Trade Receivables and are not available to the creditors of CSX or any of its other subsidiaries. In the event CSX Trade Receivables draws under this facility, the Company will record an equivalent amount of debt on its consolidated financial statements. As of the date of this filing, the Company has no outstanding balances under this facility.

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Other Comprehensive Income (Details) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 27, 2013		Dec. 28, 2012		Dec. 30, 2011
Accumulated Other Comprehensive Income (Loss) [Line Items]
Comprehensive Earnings	$ 2,277		$ 1,802	[1]	$ 1,750	[1]
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
Beginning Balance	(936)	[1]	(875)		(771)
Other Comprehensive Income (Loss):
Income (Loss) Before Reclassifications	534		(181)		(229)
Loss (Income) Reclassified to Net Earnings	109	[2]	87	[2]	74	[2]
Tax (Expense) Benefit	(230)		33		51
Other Comprehensive (Loss) Income, Net of Tax	413		(61)	[1]	(104)	[1]
Ending Balance	(523)	[1]	(936)	[1]	(875)
Pension and Other Post-Employment Benefits [Member]
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
Beginning Balance	(851)		(799)		(711)
Other Comprehensive Income (Loss):
Income (Loss) Before Reclassifications	510		(172)		(216)
Loss (Income) Reclassified to Net Earnings	111	[2]	88	[2]	75	[2]
Tax (Expense) Benefit	(232)		32		53
Other Comprehensive (Loss) Income, Net of Tax	389		(52)	[1]	(88)	[1]
Ending Balance	(462)		(851)		(799)
Other
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
Beginning Balance	(85)	[3]	(76)	[3]	(60)	[3]
Other Comprehensive Income (Loss):
Income (Loss) Before Reclassifications	24	[3]	(9)	[3]	(13)	[3]
Loss (Income) Reclassified to Net Earnings	(2)	[2],[3]	(1)	[2],[3]	(1)	[2],[3]
Tax (Expense) Benefit	2	[3]	1	[3]	(2)	[3]
Other Comprehensive (Loss) Income, Net of Tax	24	[3]	(9)	[1],[3]	(16)	[1],[3]
Ending Balance	$ (61)	[3]	$ (85)	[3]	$ (76)	[3]

[1] See the revision of prior period financial statements in Note 1. Nature of Operations and Significant Accounting Policies.

[2] Amounts reclassified to net earnings primarily relate to the amortization of actuarial losses and are included in labor and fringe on the consolidated income statements. See Note 8. Employee Benefit Plans for further information.

[3] Other primarily represents CSX's share of AOCI of equity method investees. Amounts reclassified to net earnings are included in other income - net on the consolidated income statements.

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(Investments and Long-term Debt) (Details) (USD $) In Millions, unless otherwise specified	Dec. 27, 2013	Dec. 28, 2012
Fair Value [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Investments at fair value	$ 668	$ 743
Fair Value [Member] | Less than 1 year [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Investments at fair value	487	587
Fair Value [Member] | 1 - 2 years [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Investments at fair value	58	61
Fair Value [Member] | 2 - 5 years [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Investments at fair value	105	76
Fair Value [Member] | Greater than 5 years [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Investments at fair value	18	19
Fair Value [Member] | Certificates of Deposit and Commercial Paper [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Investments at fair value	472	555
Fair Value [Member] | Corporate Bonds [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Investments at fair value	132	142
Fair Value [Member] | Government securities [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Investments at fair value	49	31
Fair Value [Member] | Auction Rate Securities [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Investments at fair value	15	15
Fair Value [Member] | Level 1 [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Investments at fair value	0	0
Fair Value [Member] | Level 1 [Member] | Certificates of Deposit and Commercial Paper [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Investments at fair value	0	0
Fair Value [Member] | Level 1 [Member] | Corporate Bonds [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Investments at fair value	0	0
Fair Value [Member] | Level 1 [Member] | Government securities [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Investments at fair value	0	0
Fair Value [Member] | Level 1 [Member] | Auction Rate Securities [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Investments at fair value	0	0
Fair Value [Member] | Level 2 [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Investments at fair value	653	728
Long-term Debt Including Current Maturities	10,354	11,562
Fair Value [Member] | Level 2 [Member] | Certificates of Deposit and Commercial Paper [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Investments at fair value	472	555
Fair Value [Member] | Level 2 [Member] | Corporate Bonds [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Investments at fair value	132	142
Fair Value [Member] | Level 2 [Member] | Government securities [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Investments at fair value	49	31
Fair Value [Member] | Level 2 [Member] | Auction Rate Securities [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Investments at fair value	0	0
Fair Value [Member] | Level 3 [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Investments at fair value	15	15
Fair Value [Member] | Level 3 [Member] | Certificates of Deposit and Commercial Paper [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Investments at fair value	0	0
Fair Value [Member] | Level 3 [Member] | Corporate Bonds [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Investments at fair value	0	0
Fair Value [Member] | Level 3 [Member] | Government securities [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Investments at fair value	0	0
Fair Value [Member] | Level 3 [Member] | Auction Rate Securities [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Investments at fair value	15	15
Amortized Cost Basis [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Amortized cost basis of investments	668	742
Amortized Cost Basis [Member] | Level 2 [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Long-term Debt Including Current Maturities	$ 9,555	$ 9,832

XML

Document And Entity Information (USD $) In Billions, except Share data, unless otherwise specified	12 Months Ended
	Dec. 27, 2013	Jan. 24, 2014	Jun. 28, 2013
Document and Entity Information [Abstract]
Entity Registrant Name	CSX CORP
Entity Central Index Key	0000277948
Current Fiscal Year End Date	--12-27
Entity Well-known Seasoned Issuer	Yes
Entity Voluntary Filers	No
Entity Current Reporting Status	Yes
Entity Filer Category	Large Accelerated Filer
Entity Public Float			$ 21
Entity Common Stock, Shares Outstanding		1,007,591,673
Document Fiscal Year Focus	2013
Document Fiscal Period Focus	FY
Document Type	10-K
Amendment Flag	false
Document Period End Date	Dec. 27, 2013

XML

Other Income - Net

12 Months Ended

Dec. 27, 2013

Other Income and Expenses [Abstract]

Other Income - Net

Other Income - Net

The Company derives income from items that are not considered operating activities.  Income from these items is reported net of related expense. Income from real estate operations includes the results of the Company’s non-operating real estate sales, leasing, acquisition and management and development activities and may fluctuate as a function of timing of real estate sales. Miscellaneous income (expense) includes equity earnings or losses, investment gains and losses and other non-operating activities and may fluctuate due to timing.  Other income – net consisted of the following:

	Fiscal Years
(Dollars in Millions)	2013			2012			2011
Interest Income	$	8		$	5		$	5
Income from Real Estate Operations	23			81			25
Miscellaneous Expense	(20		)	(13		)	(8		)
Total Other Income - Net	$	11		$	73		$	22
Gross Revenue from Real Estate
Operations included above	$	48		$	106		$	51

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Debt and Credit Agreements (Credit Facilities and Receivable Securitization Facility) (Details) (USD $)	12 Months Ended
	Dec. 27, 2013
Line of Credit Facility [Line Item]
Line of Credit Facility, Covenant Compliance	At December 2013, CSX was in compliance with all covenant requirements under the facilities.
Accounts Receivable Securitization Credit Facility [Member]
Line of Credit Facility [Line Item]
Line of credit facility, current borrowing capacity	$ 250,000,000
Line of Credit Facility, Expiration Date	Dec. 19, 2014
Line of credit facility, amount outstanding	0
Line of Credit Facility Total Expiration Period	364 days
Unsecured Revolving Credit Facility, Current [Member]
Line of Credit Facility [Line Item]
Line of credit facility, current borrowing capacity	1,000,000,000
Line of credit facility, amount outstanding	$ 0
Revolving Credit Facility [Member]
Line of Credit Facility [Line Item]
Line of Credit Facility, Expiration Date	Sep. 30, 2016

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Related Party Transactions (Consolidated Balance Sheets Components) (Details) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 27, 2013		Dec. 28, 2012
Related Party Transaction [Line Items]
Payable to Affiliates	$ 0		$ 0
Corporate Joint Venture [Member] | Accounts Payable [Member]
Related Party Transaction [Line Items]
Payable to Affiliates	172	[1]	175	[1]
Corporate Joint Venture [Member] | Long-term Debt [Member] | Promissory Note Related Party October 2035 [Member]
Related Party Transaction [Line Items]
Promissory Notes Payable to Conrail Subsidiary	73	[2]	73	[2]
Notes issued, interest rate	4.40%
Corporate Joint Venture [Member] | Long-term Debt [Member] | Promissory Note Related Party March 2035 [Member]
Related Party Transaction [Line Items]
Promissory Notes Payable to Conrail Subsidiary	$ 23	[2]	$ 23	[2]
Notes issued, interest rate	4.52%

[1] CSX Payable to Conrail is included on the consolidated balance sheet of CSX as accounts payable because it is short term in nature.

[2] Promissory notes payable to Conrail are included on the consolidated balance sheet of CSX as long-term debt.

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CONSOLIDATED BALANCE SHEETS (USD $) In Millions, unless otherwise specified	Dec. 27, 2013		Dec. 28, 2012		Dec. 30, 2011		Dec. 31, 2010
Current Assets
Cash and Cash Equivalents	$ 592	[1]	$ 784	[1]	$ 783	[1]	$ 1,292	[1]
Short-term Investments	487	[1]	587	[1]
Accounts Receivable - Net	1,052	[1]	1,114	[1]	1,147	[1]
Materials and Supplies	252	[1]	274	[1]
Deferred Income Taxes	155	[1]	119	[1]
Other Current Assets	64	[1]	75	[1]
Total Current Assets	2,602		2,953	[1]	2,953
Properties	37,184	[1]	35,279	[1]
Accumulated Depreciation	(9,893)	[1]	(9,229)	[1]
Properties - Net	27,291		26,050	[1]
Other Long-term Assets	591	[1]	514	[1]
Total Assets	31,782		30,723	[1]	29,491
Current Liabilities
Accounts Payable	957	[1]	948	[1]	954	[1]
Labor and Fringe Benefits Payable	587	[1]	468	[1]
Current Maturities of Long-term Debt	533	[1]	780	[1]
Income and Other Taxes Payable	91	[1]	169	[1]	210	[1]
Other Current Liabilities	105	[1]	140	[1]
Total Current Liabilities	2,424		2,645	[1]	2,575
Long-term Debt	9,022	[1]	9,052	[1]
Deferred Income Taxes	8,662	[1]	8,096	[1]
Other Long-term Liabilities	870	[1]	1,457	[1]
Total Liabilities	21,278		21,587	[1]	20,893
Shareholders' Equity:
Common Stock, $1 Par Value	1,009	[1]	1,020	[1]
Other Capital	61	[1]	28	[1]
Retained Earnings	9,936	[1]	9,010	[1]	8,405	[1]
Accumulated Other Comprehensive Loss	(523)	[1]	(936)	[1]	(875)		(771)
Noncontrolling Minority Interest	21	[1]	14	[1]
Total Shareholders' Equity	10,504		9,136	[1]	8,598		8,798
Total Liabilities and Shareholders' Equity	31,782		30,723	[1]	29,491
Investments in Conrail
Current Assets
Investment in Affiliates and Joint Ventures	752	[1]	695	[1]
Affiliates and Other Companies
Current Assets
Investment in Affiliates and Joint Ventures	$ 546	[1]	$ 511	[1]

[1] See the revision of prior period financial statements in Note 1. Nature of Operations and Significant Accounting Policies.

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Stock Plans and Share-Based Compensation

12 Months Ended

Dec. 27, 2013

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

Stock Plans and Share-Based Compensation

Stock Plans and Share-Based Compensation

Under CSX's share-based compensation plans, awards primarily consist of performance grants, restricted stock awards, restricted stock units, stock options and stock grants for directors.  Awards granted under the various programs are determined and approved by the Compensation Committee of the Board of Directors or, in certain circumstances, by the Chief Executive Officer for awards to management employees other than senior executives.  The Board of Directors approves awards granted to the Company’s non-management directors upon recommendation of the Governance Committee.

The Compensation-Stock Compensation Topic in the ASC requires the cash flows resulting from income tax deductions in excess of compensation costs to be classified as financing cash flows.  This requirement resulted in reduced net operating cash flows and increased net financing cash flows of approximately $13 million, $37 million and $35 million for fiscal years 2013, 2012 and 2011, respectively.

The Compensation-Stock Compensation Topic also requires the disclosure of total compensation costs for share-based payment arrangements and the related tax benefits recognized in income. Share-based compensation expense is measured at the fair market value of the Company’s stock on the grant date and is recognized on a straight-line basis over the service period of the respective award.  Total pre-tax expense associated with share-based compensation and its related income tax benefit is as follows:

	Fiscal Years
(Dollars in Millions)	2013		2012		2011
Share-Based Compensation Expense	$	14	$	14	$	30
Income Tax Benefit	6		5		11

Stock Options

Stock options have not been granted since 2003. As of December 2013, there were no current or former employees with stock options outstanding, as all remaining stock options expired in May 2013.  The exercise price for options granted equals the market price of the underlying stock on the grant date.  The total intrinsic value of options exercised for fiscal years ended 2013, 2012, and 2011 was $27 million, $37 million, and $84 million, respectively. This value represents the value realized by current and former employees who exercised options.

A summary of CSX's stock option activity and related information for the fiscal years 2013, 2012 and 2011 is as follows:

	Fiscal Years
	2013				2012				2011
	Options Outstanding (Thousands)		Weighted- Average Exercise Price		Options Outstanding (Thousands)		Weighted- Average Exercise Price		Options Outstanding (Thousands)		Weighted- Average Exercise Price
Outstanding & Exercisable at Beginning of Year	1,672		$	5.36	4,145		$	5.64	9,111		$	5.82
Expired or Cancelled	(9	)	5.36		(15	)	6.36		(27	)	6.44
Exercised	(1,663	)	5.36		(2,458	)	5.83		(4,939	)	5.96
Outstanding & Exercisable at End of Year	—		$	—	1,672		$	5.36	4,145		$	5.64

NOTE 4.  Stock Plans and Share-Based Compensation, continued

Restricted Stock Grants

Restricted stock grants consist of units and awards. Restricted stock units are granted as part of the Company's long-term incentive plan, with each unit being equivalent to one share of CSX stock and vest over three years.  Restricted stock awards generally vest over an employment period of up to five years. The following table provides information about outstanding restricted stock units and awards combined.  As of December 2013, unrecognized compensation expense for these awards and units was approximately $17 million, which will be expensed over a weighted-average remaining period of 2 years.

	Fiscal Years
	2013		2012		2011
Restricted Stock Units and Awards Outstanding (Thousands)(a)	1,462		1,353		1,572
Weighted-Average Fair Value at Grant Date	$	23.89	$	21.38	$	16.91
Restricted Stock Units and Awards Expense (Millions)(a)	10		9		7
Unvested Restricted Stock Units and Awards Outstanding (Thousands)	705		629		678
Weighted-Average Fair Value of Unvested Units and Awards Outstanding	$	24.17	$	22.48	$	20.93

(a)  Time-based restricted stock units were granted to certain employees under the respective Long-term Incentive Plans in the amount of 524,000, 433,000, and 361,000 in 2013, 2012, and 2011, respectively, as described below.  These units vest over three years, therefore only a partial amount of expense was recognized in 2013, 2012, and 2011, respectively.

Long-term Incentive Plans

The CSX Long-term Incentive Plans (“LTIP”) were adopted under the 2010 CSX Stock and Incentive Award Plan. The objective of these long-term incentive plans is to motivate and reward certain employees for achieving and exceeding certain financial and strategic initiatives.

In May of 2011, 2012 and 2013, target performance units were granted to certain employees under three separate LTIP plans covering three-year cycles: the 2011-2013 (“2013 LTIP”), 2012-2014 (“2014 LTIP”) and 2013-2015 (“2015 LTIP”) plans (collectively, the “Plans”). The key financial target for the 2013 and 2014 plans is based solely on operating ratio (operating expense divided by operating revenue) and excludes certain non-recurring items as disclosed in the Company's financial statements. The key financial targets for the 2015 plan will be based on the achievement of goals related to both operating ratio and return on assets (tax-adjusted operating income divided by net property) excluding non-recurring items as disclosed in the Company's financial statements. The three-year average operating ratio and return on assets over the performance period will each comprise 50% of the payout and are measured independently of the other.

Grants were made in performance units, with each unit being equivalent to one share of CSX common stock, and payouts will be made in CSX common stock.  The payout range for participants will be between 0% and 200% of the target awards depending on Company performance against predetermined goals for each three-year cycle. The 2013 and 2014 plans provides that payouts for certain executive officers are subject to downward adjustment by up to 30% based upon Company performance against certain CSX strategic initiatives. The 2015 plan states that payouts for certain executive officers are subject to downward adjustment by up to 30% based upon total shareholder return relative to specified comparable groups.  Total expense incurred due to long-term incentive plans was $2 million, $3 million and $21 million for fiscal years 2013, 2012 and 2011, respectively.

NOTE 4.  Stock Plans and Share-Based Compensation, continued

The 2013 plan ended on December 27, 2013, and CSX did not issue any shares in January 2014 as applicable performance targets for the three preceding fiscal years were not met.

	LTIP Plan (Plan Ended In)
	2013		2014		2015
Number of target units outstanding (Thousands)(a)	1,080		1,340		1,318
Weighted-average fair value at grant date (a)	$	25.63	$	22.13	$	25.32
Payout Range	0% - 200%		0% - 200%		0% - 200%

(a) Number of target units granted and weighted-average fair value calculations above include the value of both initial grants and subsequent, smaller grants issued at different prices based on grant date fair value to new or promoted employees not previously included.

Restricted Stock Units

As part of the 2013, 2014 and 2015 plans, 361 thousand, 433 thousand and 524 thousand restricted stock units, respectively, were granted.  The restricted stock units vest three years after the date of grant. Participants receive cash dividend equivalents on the unvested shares during the restriction period.  These awards are time-based and are not based upon CSX’s attainment of operational targets.  The restricted stock units and expenses are included in the information as shown within the Restricted Stock Grants section above.

As of December 2013, there was $29 million of total unrecognized compensation cost related to these plans that is expected to be recognized over a weighted-average period of approximately 2 years.  The activity related to each of the outstanding long-term incentive plans is summarized as follows:

	LTIP Plan (Plan Ended In)						Weighted-Average Fair Value at Grant Date
(Units Outstanding, in Thousands)	2013		2014		2015
Unvested at December 30, 2011	991		—		—		$	25.92
Granted in 2012	65		1,325		—		21.97
Forfeited in 2012	(2	)	(69	)	—		(21.99		)
Unvested at December 28, 2012	1,054		1,256		—		23.66
Granted in 2013	26		85		1,354		25.24
Forfeited in 2013	—		(1	)	(36	)	(25.31		)
Cancelled due to performance conditions(a)	(1,080	)	—		—		25.63
Vested at December 27, 2013	—		—		—		—
Unvested at December 27, 2013	—		1,340		1,318		$	23.73

(a) The minimum financial target was not met in 2013. As a result, there was no performance unit payout for the LTIP ended December 27, 2013.

NOTE 4.  Stock Plans and Share-Based Compensation, continued

Stock Awards for Directors

CSX’s non-management directors receive an annual retainer of $75,000 to be paid quarterly in cash, unless the director chooses to receive the retainer in the form of CSX common stock. Additionally, non-management directors receive an annual grant of common stock in the amount of approximately $150,000, with the number of shares to be granted based on the average closing price of CSX stock in the months of November, December and January.   The following table provides information about shares issued to directors.

	Fiscal Years
	2013		2012		2011
Shares Issued to Directors (Thousands)	105		102		93
Expense (Millions)	$	2	$	2	$	2
Weighted Average Grant Date Stock Price	$	23.12	$	21.92	$	23.46

The directors may elect to defer receipt of their fees, in accordance with Internal Revenue Code Section 409A.  Deferred cash amounts were credited to an account and invested in a choice of eight investment selections, including a CSX common stock equivalent fund.  Distributions are made in accordance with elections made by the directors, consistent with the terms of the Directors' Deferred Compensation Plan.

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Shareholders' Equity

12 Months Ended

Dec. 27, 2013

Stockholders' Equity Note [Abstract]

Stockholders' Equity

Shareholders’ Equity

Common and preferred stock consists of the following:

Common Stock, $1 Par Value	December 2013
	(Units in Millions)
Common Shares Authorized	1,800
Common Shares Issued and Outstanding	1,009
Preferred Stock
Preferred Shares Authorized	25
Preferred Shares Issued and Outstanding	—

Holders of common stock are entitled to one vote on all matters requiring a vote for each share held.  Preferred stock is senior to common stock with respect to dividends and upon liquidation of CSX.

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Quarterly Financial Data (Unaudited)

12 Months Ended

Dec. 27, 2013

Quarterly Financial Information Disclosure [Abstract]

Quarterly Financial Data (Unaudited)

Quarterly Financial Data (Unaudited)

Pursuant to Article 3 of the SEC’s Regulation S-X, the following are selected quarterly financial data, which has been revised for all four quarters of 2011 and 2012 as well as the first three quarters of 2013. See the revision of prior period financial statements in Note 1. Nature of Operations and Significant Accounting Policies.

Fiscal Year Ended December 2013	Quarters
(Dollars in Millions, Except Per Share Amounts)	1st		2nd		3rd		4th		Full Year
Revenue	$	2,963	$	3,046	$	2,985	$	3,032	$	12,026
Operating Income	880		940		840		813		3,473
Net Earnings	462		521		455		426		1,864
Earnings Per Share, Basic	$	0.45	$	0.51	$	0.45	$	0.42	$	1.83
Earnings Per Share, Assuming Dilution	0.45		0.51		0.45		0.42		1.83
Fiscal Year Ended December 2012
Revenue	$	3,018	$	2,986	$	2,864	$	2,895	$	11,763
Operating Income	908		917		824		815		3,464
Net Earnings	481		496		437		449		1,863
Earnings Per Share, Basic	$	0.46	$	0.48	$	0.42	$	0.44	$	1.80
Earnings Per Share, Assuming Dilution	0.46		0.48		0.42		0.44		1.79
Fiscal Year Ended December 2011
Revenue	$	2,827	$	3,013	$	2,962	$	2,993	$	11,795
Operating Income	790		920		877		883		3,470
Net Earnings	406		502		463		483		1,854
Earnings Per Share, Basic	$	0.37	$	0.46	$	0.43	$	0.46	$	1.71
Earnings Per Share, Assuming Dilution	0.36		0.45		0.43		0.46		1.70

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Income Taxes

12 Months Ended

Dec. 27, 2013

Income Tax Disclosure [Abstract]

Income Taxes

Income Taxes

Earnings before income taxes of $2.9 billion, $3.0 billion and $2.9 billion for fiscal years 2013, 2012 and 2011, respectively, represent earnings from domestic operations.

The breakdown of income tax expense between current and deferred is as follows:

	Fiscal Years
(Dollars in Millions)	2013		2012 (a)		2011 (a)
Current:
Federal	$	671	$	450	$	370
State	87		66		107
Subtotal Current	758		516		477
Deferred:
Federal	285		530		614
State	15		62		(5		)
Subtotal Deferred	300		592		609
Total	$	1,058	$	1,108	$	1,086

(a) See the revision of prior period financial statements in Note 1. Nature of Operations and Significant Accounting Policies.

Income tax expense reconciled to the tax computed at statutory rates is presented in the table below.  The Company recorded a tax benefit of $42 million, $20 million and $14 millionin 2013, 2012 and 2011, respectively, primarily as a result of federal and state legislative changes as well as the resolution of other federal and state tax matters. Each year's benefit is included in the state income tax and other lines in the table below.

	Fiscal Years
(Dollars In Millions)	2013					2012 (a)					2011 (a)
Federal Income Taxes	$	1,023		35.0	%	$	1,040		35.0	%	$	1,029		34.9	%
State Income Taxes	65			2.2	%	81			2.8	%	65			2.2	%
Other	(30		)	(1.0	)%	(13		)	(0.4	)%	(8		)	(0.3	)%
Income Tax Expense/Rate	$	1,058		36.2	%	$	1,108		37.4	%	$	1,086		36.8	%

(a) See the revision of prior period financial statements in Note 1. Nature of Operations and Significant Accounting Policies.

In September 2013, the Internal Revenue Service issued final regulations governing the income tax treatment of the acquisition, disposition and repair of tangible property. The regulations are effective beginning in 2014. The Company does not expect these new regulations to have a material impact on the financial statements.

NOTE 11. Income Taxes, continued

The significant components of deferred income tax assets and liabilities include:

	2013				2012
(Dollars in Millions)	Assets		Liabilities		Assets		Liabilities
Pension Plans	$	67	$	—	$	249	$	—
Other Employee Benefit Plans	299		—		292		—
Accelerated Depreciation	—		8,868		—		8,544
Other	257		262		278		252
Total	$	623	$	9,130	$	819	$	8,796
Net Deferred Income Tax Liabilities			$	8,507			$	7,977

The primary factors in the change in year-end net deferred income tax liability balances include:

• Annual provision for deferred income tax expense; and

• Accumulated other comprehensive loss.

The Company files a consolidated federal income tax return, which includes its principal domestic subsidiaries. Income tax incurred on the operations of CSX and its subsidiaries are subject to U.S. federal income tax as well as income tax of multiple state jurisdictions.  CSX participated in a contemporaneous Internal Revenue Service (“IRS”) audit of tax year 2013.  Federal examinations of original federal income tax returns for all years through 2011 are resolved.

As of December 2013, 2012 and 2011, the Company had approximately $23 million, $24 million and $22 million, respectively, of total net unrecognized tax benefits.  After consideration of the impact of federal tax benefits, $15 million, $17 million and $15 million in 2013, 2012 and 2011, respectively, could favorably affect the effective income tax rate in each year.  The Company estimates that approximately $3 million of the unrecognized tax benefits as of December 2013 for various state and federal income tax matters will be resolved over the next 12 months upon the expiration of statutes of limitations.  The final outcome of these uncertain tax positions, however, is not yet determinable. The change to the total gross unrecognized tax benefits and prior year audit resolutions of the Company during the fiscal year ended December 2013 is reconciled as follows:

Uncertain Tax Positions:	Fiscal Year
(Dollars in Millions)	2013			2012			2011
Balance at beginning of the year	$	24		$	22		$	20
Additions based on tax positions related to current year	2			6			1
Additions based on tax positions related to prior years	5			3			10
Reductions based on tax positions related to prior years	(6		)	(1		)	(3		)
Settlements with taxing authorities	—			—			(5		)
Lapse of statute of limitations	(2		)	(6		)	(1		)
Balance at end of the year	$	23		$	24		$	22

NOTE 11. Income Taxes, continued

CSX’s continuing practice is to recognize net interest and penalties related to income tax matters in income tax expense.  Included in the consolidated income statements are benefits of $1 million and $8 million in 2013 and 2012, respectively, and expense of $1 million in 2011 for changes to reserves for interest and penalties for all prior year tax positions.  The current year benefit for interest and penalties is due to favorable tax settlements of prior period tax audits where the Company had previously accrued a liability for interest and penalties.  The Company had $2 million, $3 million and $11 million accrued for interest and penalties at 2013, 2012 and 2011, respectively, for all prior year tax positions.

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Income Taxes (Deferred Income Tax Assets and Liabilities) (Details) (USD $) In Millions, unless otherwise specified	Dec. 27, 2013	Dec. 28, 2012
Components of Deferred Tax Assets [Abstract]
Pension Plans	$ 67	$ 249
Other Employee Benefit Plans	299	292
Other	257	278
Total	623	819
Components of Deferred Tax Liabilities [Abstract]
Accelerated Depreciation	8,868	8,544
Other	262	252
Total	9,130	8,796
Net Deferred Income Tax Liabilities	$ 8,507	$ 7,977

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Commitments and Contingencies

12 Months Ended

Dec. 27, 2013

Commitments and Contingencies Disclosure [Abstract]

Commitments and Contingencies

Commitments and Contingencies

Lease Commitments

The Company has various lease agreements with other parties with terms up to 30 years.  Non-cancelable, long-term leases may include provisions for maintenance, options to purchase, and options to extend the terms.  The Company uses the straight-line method to recognize rent expense associated with operating leases that include escalations over their terms. These amounts are shown in the table below.

	Fiscal Years
(Dollars in Millions)	2013		2012		2011
Rent Expense on Operating Leases	$	60	$	73	$	68

At December 2013, minimum rentals on land, buildings, track and equipment under operating leases are disclosed in the table below.  Also, payments to Conrail, Inc. ("Conrail") for leases on shared rail infrastructure are included in these amounts. (See Note 12, Related Party Transactions).

(Dollars in Millions)	Operating		Sublease			Net Lease
Years	Leases		Income			Commitments
2014	$	79	$	(3	)	$	76
2015	73		(2		)	71
2016	64		(2		)	62
2017	55		(2		)	53
2018	46		(2		)	44
Thereafter	275		(13		)	262
Total	$	592	$	(24	)	$	568

Purchase Commitments

CSXT has a commitment under a long-term maintenance program that currently covers 44% of CSXT’s fleet of locomotives.  The agreement is based on the maintenance cycle for each locomotive.  Under CSXT’s current obligations, the agreement will expire no earlier than 2031.  The costs expected to be incurred throughout the duration of the agreement fluctuate as locomotives are placed into or removed from service, or as required maintenance schedules are revised.  The table below includes both active and inactive locomotives covered under this agreement. 

The following table summarizes the number of locomotives covered and CSXT’s payments under the long-term maintenance program.

	Fiscal Years
(Dollars in Millions)	2013		2012		2011
Amounts Paid	$	287	$	287	$	281
Number of Locomotives	1,886		1,899		1,928

Annual payments related to the locomotive purchase obligations, including amounts that would be payable under the long-term maintenance program, are estimated in the table below. The amount of the ultimate purchase commitment depends upon the model of locomotive acquired and the timing of delivery. 

NOTE 7.  Commitments and Contingencies, continued

     Additionally, the Company has various other commitments to purchase technology, communications, railcar maintenance and other services from various suppliers.  Total annual payments under all of these purchase commitments are also estimated in the table below.

(Dollars in Millions)	Locomotive & Maintenance Payments		Other Commitments		Total
2014	$	292	$	321	$	613
2015	253		66		319
2016	245		15		260
2017	232		6		238
2018	220		6		226
Thereafter	1,314		53		1,367
Total	$	2,556	$	467	$	3,023

Insurance

The Company maintains numerous insurance programs with substantial limits for property damage (which includes business interruption) and third-party liability.  A certain amount of risk is retained by the Company on each of the property and liability programs.  The Company has a $25 million retention per occurrence for the non-catastrophic property program (such as a derailment) and a $50 million retention per occurrence for the liability and catastrophic property programs (such as hurricanes and floods).

While the Company believes its insurance coverage is adequate, future claims could exceed existing insurance coverage or insurance may not continue to be available at commercially reasonable rates. 

Legal

The Company is involved in litigation incidental to its business and is a party to a number of legal actions and claims, various governmental proceedings and private civil lawsuits, including, but not limited to, those related to fuel surcharge practices, environmental and hazardous material exposure matters, FELA claims by employees, other personal injury or property claims and disputes and complaints involving certain transportation rates and charges. Some of the legal proceedings include claims for compensatory as well as punitive damages and others are, or are purported to be, class actions. While the final outcome of these matters cannot be predicted with certainty, considering, among other things, the legal defenses available and liabilities that have been recorded along with applicable insurance, it is currently the opinion of CSX management that none of these pending items will have a material adverse effect on the Company's financial condition, results of operations or liquidity. An unexpected adverse resolution of one or more of these items, however, could have a material adverse effect on the Company's financial condition, results of operations or liquidity in that particular period.

NOTE 7.  Commitments and Contingencies, continued

The Company is able to estimate a range of possible loss for certain legal proceedings for which a loss is reasonably possible in excess of reserves established. The Company has estimated this range to be $2 million to $15 million in aggregate at December 27, 2013. This estimated aggregate range is based upon currently available information and is subject to significant judgment and a variety of assumptions. Accordingly, the Company's estimate will change from time to time, and actual losses may vary significantly from the current estimate.

Fuel Surcharge Antitrust Litigation

In May 2007, class action lawsuits were filed against CSXT and three other U.S.-based Class I railroads alleging that the defendants' fuel surcharge practices relating to contract and unregulated traffic resulted from an illegal conspiracy in violation of antitrust laws. In November 2007, the class action lawsuits were consolidated and are now pending in federal court in the District of Columbia. The suit seeks treble damages allegedly sustained by purported class members as well as attorneys' fees and other relief. Plaintiffs are expected to allege damages at least equal to the fuel surcharges at issue.

In June 2012, the District Court certified the case as a class action. The decision was not a ruling on the merits of plaintiffs' claims, rather a decision to allow the plaintiffs to seek to prove the case as a class. The defendant railroads petitioned the U.S. Court of Appeals for the D.C. Circuit for permission to appeal the District Court's class certification decision. In August 2013, the D.C. Circuit issued a decision vacating the class certification decision and remanded the case to the District Court to reconsider its class certification decision. In October, 2013, the District Court held a case management conference to determine the scope and schedule of the remand proceedings. The District Court has ordered briefing on class certification to be completed by the end of May 2014.  In the interim, the District Court has delayed proceedings on the merits of the case.

CSXT believes that its fuel surcharge practices were arrived at and applied lawfully and that the case is without merit. Accordingly, the Company intends to defend itself vigorously. However, penalties for violating antitrust laws can be severe, and an unexpected adverse decision on the merits could have a material adverse effect on the Company's financial condition, results of operations or liquidity in that particular period or for the full year.

NOTE 7.  Commitments and Contingencies, continued

Environmental

CSXT has certain indemnification requirements with respect to Pharmacia LLC (formerly known as Monsanto Company) for certain liabilities associated with real estate formerly owned by Pharmacia that is now owned by CSXT in Kearny, New Jersey (the “Property”).  The indemnification and defense duties arise with respect to several matters.  The State of New Jersey filed suit in 2005 against Occidental Chemical Corporation, Tierra Solutions Inc., Maxus Energy Corporation and five other companies seeking cleanup and removal costs and other damages associated with the presence of dioxin and other hazardous substances in the sediment of the Newark Bay Complex, which includes a 17-mile stretch of the Passaic River near the Property. In 2009, Pharmacia, along with hundreds of other companies, was served with a third-party complaint by Tierra Solutions Inc. and Maxus Energy Corporation seeking contribution towards the costs and damages claimed by the state of New Jersey or incurred by Tierra and Maxus related to the Newark Bay Complex.  CSXT has been participating in the defense of this matter with and on behalf of Pharmacia.  In 2013, Pharmacia, along with most of the other third-party defendants, entered into a settlement agreement with the state of New Jersey for an amount that is not material to CSXT.  The settlement, approved by the Superior Court of New Jersey in December 2013, resolves certain claims or potential claims by the state of New Jersey for costs and damages arising from discharges to the Newark Bay Complex.  CSXT, on behalf of Pharmacia, is also conducting a Remedial Investigation and Feasibility Study of the 17-mile Lower Passaic River Study Area with approximately 70 other parties pursuant to an Administrative Order on Consent with the EPA. The Company does not believe any remediation costs potentially allocable to CSXT would be material to the Company's financial condition, results of operations or liquidity.

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Properties (Railroad Assets, Non-Railroad Assets, and Capital Expenditure) (Details) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 27, 2013		Dec. 28, 2012		Dec. 30, 2011
Railroad Assets [Abstract]
Percentage of assets depreciated under the group-life method	86.00%
Total fixed assets	$ 37,184	[1]	$ 35,279	[1]
Annual depreciation expense	1,104		1,059	[1]	976	[1]
Capital Expenditures [Abstract]
Percentage of labor costs relating to the deconstruction of old track (In hundredths)	20.00%
Percentage of labor costs relating to the installation of new track (In hundredths)	80.00%
Road - Total [Member]
Railroad Assets [Abstract]
Total fixed assets	24,618		23,419
Life studies, frequency period	6 years
Road - Ties [Member]
Railroad Assets [Abstract]
Total fixed assets	4,534		4,287
Number of depreciable asset categories for railroad assets	18
Road - System Roadway Machinery [Member]
Railroad Assets [Abstract]
Total fixed assets	3,654		3,345
Road - Grading [Member]
Railroad Assets [Abstract]
Total fixed assets	2,425		2,407
Total Equipment [Member]
Railroad Assets [Abstract]
Total fixed assets	9,764		9,301
Life studies, frequency period	3 years
Equipment - Work Equipment and Other [Member]
Railroad Assets [Abstract]
Total fixed assets	1,666		1,466
Abnormal gain (loss) on operating property [Member]
Railroad Assets [Abstract]
Abnormal gains and losses	65		104		14
Gain (loss) on non-operating property [Member]
Railroad Assets [Abstract]
Abnormal gains and losses			$ 57
Minimum [Member]
Railroad Assets [Abstract]
Number of depreciable asset categories for railroad assets	130
Minimum [Member] | Road - Total [Member]
Railroad Assets [Abstract]
Estimated useful life	6 years		6 years
Minimum [Member] | Road - System Roadway Machinery [Member]
Railroad Assets [Abstract]
Estimated useful life	6 years
Minimum [Member] | Total Equipment [Member]
Railroad Assets [Abstract]
Estimated useful life	5 years		5 years
Minimum [Member] | Technology Assets [Member]
Railroad Assets [Abstract]
Estimated useful life	6 years
Maximum [Member] | Road - Total [Member]
Railroad Assets [Abstract]
Estimated useful life	80 years		80 years
Maximum [Member] | Road - Grading [Member]
Railroad Assets [Abstract]
Estimated useful life	80 years
Maximum [Member] | Total Equipment [Member]
Railroad Assets [Abstract]
Estimated useful life	38 years		38 years
Maximum [Member] | Equipment - Work Equipment and Other [Member]
Railroad Assets [Abstract]
Estimated useful life	38 years

[1] See the revision of prior period financial statements in Note 1. Nature of Operations and Significant Accounting Policies.

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Casualty, Environmental and Other Reserves

12 Months Ended

Dec. 27, 2013

Casualty, Environmental and Other Reserves [Abstract]

Casualty, Environmental and Other Reserves

Casualty, Environmental and Other Reserves

Activity related to casualty, environmental and other reserves is as follows:

	Casualty			Environmental			Other
(Dollars in Millions)	Reserves			Reserves			Reserves			Total
December 31, 2010	$	375		$	107		$	59		$	541
Charged to Expense	68			23			41			132
Payments	(71		)	(47		)	(36		)	(154		)
December 30, 2011	372			83			64			519
Charged to Expense	51			35			36			122
Payments	(98		)	(30		)	(36		)	(164		)
December 28, 2012	325			88			64			477
Charged to Expense	54			48			38			140
Payments	(99		)	(36		)	(31		)	(166		)
December 27, 2013	$	280		$	100		$	71		$	451

NOTE 5.  Casualty, Environmental and Other Reserves, continued

These reserves are considered critical accounting estimates due to the need for significant management judgments. They are provided for in the consolidated balance sheets as follows:

	December 2013						December 2012
(Dollars in Millions)	Current		Long-term		Total		Current		Long-term		Total
Casualty:
Personal Injury	$	59	$	148	$	207	$	75	$	158	$	233
Occupational	3		20		23		5		31		36
Asbestos	10		40		50		8		48		56
Total Casualty	72		208		280		88		237		325
Environmental	59		41		100		33		55		88
Other	20		51		71		19		45		64
Total	$	151	$	300	$	451	$	140	$	337	$	477

These liabilities are accrued when estimable and probable in accordance with the Contingencies Topic in the ASC. Actual settlements and claims received could differ.  The final outcome of these matters cannot be predicted with certainty.  Considering the legal defenses currently available, the liabilities that have been recorded and other factors, it is the opinion of management that none of these items individually, when finally resolved, will have a material effect on the Company's financial condition, results of operations or liquidity.  Should a number of these items occur in the same period, however, they could have a material effect on the Company's financial condition, results of operations or liquidity in that particular period.

Casualty

Casualty reserves of $280 million for 2013 represent accruals for personal injury, occupational injury and asbestos claims.  The Company's self-insured retention amount for these claims is $50 million per occurrence.  Currently, no individual claim is expected to exceed the self-insured retention amount.  In accordance with the Contingencies Topic in the ASC, to the extent the value of an individual claim exceeds the self-insured retention amount, the Company would present the liability on a gross basis with a corresponding receivable for insurance recoveries.  These reserves fluctuate based upon the timing of payments as well as changes in independent third-party estimates, which are reviewed by management.  Actual results may vary from estimates due to the number, type and severity of the injury, costs of medical treatments and uncertainties in litigation. Most of the claims relate to CSXT unless otherwise noted below.  Defense and processing costs, which historically have been insignificant and are anticipated to be insignificant in the future, are not included in the recorded liabilities. During 2013, 2012 and 2011, there were no significant changes in estimate recorded to adjust casualty reserves.

Personal Injury

Personal injury reserves represent liabilities for employee work-related and third-party injuries.  Work-related injuries for CSXT employees are primarily subject to the Federal Employers’ Liability Act (“FELA”).  In addition to FELA liabilities, employees of other CSX subsidiaries are covered by various state workers’ compensation laws, the Federal Longshore and Harbor Workers’ Compensation Program or the Maritime Jones Act.

NOTE 5.  Casualty, Environmental and Other Reserves, continued

CSXT retains an independent actuarial firm to assist management in assessing the value of personal injury claims.  An analysis is performed by the independent actuarial firm quarterly and is reviewed by management. The methodology used by the actuary includes a development factor to reflect growth or reduction in the value of these personal injury claims. It is based largely on CSXT's historical claims and settlement experience.

Occupational & Asbestos

     Occupational claims arise from allegations of exposures to certain materials in the workplace, such as solvents, soaps, chemicals (collectively referred to as “irritants”) and diesel fuels (like exhaust fumes) or allegations of chronic physical injuries resulting from work conditions, such as repetitive stress injuries, carpal tunnel syndrome and hearing loss.

The Company is also party to a number of asbestos claims by employees alleging exposure to asbestos in the workplace.  The heaviest possible exposure for employees resulted from work conducted in and around steam locomotive engines that were largely phased out beginning around the 1950s. Other types of exposures, however, including exposure from locomotive component parts and building materials, continued until these exposures were substantially eliminated by 1985.  Additionally, the Company has retained liability for asbestos claims filed against its previously owned international container shipping business.  Diseases associated with asbestos typically have long latency periods (amount of time between exposure to asbestos and the onset of the disease) which can range from 10 to 40 years after exposure.

Occupational and asbestos claims are analyzed by a third-party actuary or specialist (the "third-party specialist"), respectively, in order to determine the number of unasserted or incurred but not reported (“IBNR”) claims. Occupational claims analyses are performed by the third-party specialist quarterly and are reviewed by management. Since exposure to asbestos has been substantially eliminated, management reviews asserted asbestos claims quarterly and the review by the third-party specialist is completed annually. With the exception of carpal tunnel, management has determined that seven years is the most probable time period in which unasserted claim filings and claim values can be estimated.  Carpal tunnel claims use a three-year period to estimate the reserve due to the shorter latency period for these types of injuries.

The third party specialists analyze CSXT’s historical claim filings, settlement amounts, and dismissal rates to determine future anticipated claim filing rates and average settlement values for occupational and asbestos claims reserves.  The potentially exposed population is estimated by using CSX’s employment records and industry data. From this analysis, the third-party specialists provide an estimate of the IBNR claims liability.

NOTE 5.  Casualty, Environmental and Other Reserves, continued

Undiscounted liabilities recorded related to occupational and asbestos claims were as follows:

	December		December
(Dollars in Millions)	2013		2012
Occupational:
Incurred but not reported claims	$	15	$	24
Asserted claims	8		12
Total liability	$	23	$	36
Asbestos:
Incurred but not reported claims	$	35	$	37
Asserted claims	15		19
Total liability	$	50	$	56

During 2013 and 2012, there were no significant changes in estimate of occupational or asbestos reserves. A summary of occupational and asbestos claims activity is as follows:

	Fiscal Years
	2013		2012
Asserted Claims
Open Claims - Beginning of Year	523		746
New Claims Filed	165		160
Claims Settled	(146	)	(154	)
Claims Dismissed	(150	)	(229	)
Open Claims - End of Year	392		523

Environmental

Environmental reserves were $100 million for 2013. The Company is a party to various proceedings related to environmental issues, including administrative and judicial proceedings involving private parties and regulatory agencies. The Company has been identified as a potentially responsible party at approximately 244 environmentally impaired sites. Many of these are, or may be, subject to remedial action under the federal Comprehensive Environmental Response, Compensation and Liability Act of 1980, or CERCLA, also known as the Superfund Law, or similar state statutes.  Most of these proceedings arose from environmental conditions on properties used for ongoing or discontinued railroad operations.  A number of these proceedings, however, are based on allegations that the Company, or its predecessors, sent hazardous substances to facilities owned or operated by others for treatment, recycling or disposal.  In addition, some of the Company’s land holdings were leased to others for commercial or industrial uses that may have resulted in releases of hazardous substances or other regulated materials onto the property and could give rise to proceedings against the Company.

NOTE 5.  Casualty, Environmental and Other Reserves, continued

In any such proceedings, the Company is subject to environmental clean-up and enforcement actions under the Superfund Law, as well as similar state laws that may impose joint and several liability for clean-up and enforcement costs on current and former owners and operators of a site without regard to fault or the legality of the original conduct.  These costs could be substantial.

In accordance with the Asset Retirement and Environmental Obligations Topic in the ASC, the Company reviews its role with respect to each site identified at least quarterly, giving consideration to a number of factors such as:

• type of clean-up required;

• nature of the Company’s alleged connection to the location (e.g., generator of waste sent to the site or owner or operator of the site);

• extent of the Company’s alleged connection (e.g., volume of waste sent to the location and other relevant factors); and

• number, connection and financial viability of other named and unnamed potentially responsible parties at the location.

Based on the review process, the Company has recorded amounts to cover contingent anticipated future environmental remediation costs with respect to each site to the extent such costs are estimable and probable.  The recorded liabilities for estimated future environmental costs are undiscounted.  The liability includes future costs for remediation and restoration of sites as well as any significant ongoing monitoring costs, but excludes any anticipated insurance recoveries.  Payments related to these liabilities are expected to be made over the next several years.  Environmental remediation costs are included in materials, supplies and other on the consolidated income statement.

Currently, the Company does not possess sufficient information to reasonably estimate the amounts of additional liabilities, if any, on some sites until completion of future environmental studies.  In addition, conditions that are currently unknown could, at any given location, result in additional exposure, the amount and materiality of which cannot presently be reasonably estimated.  Based upon information currently available, however, the Company believes its environmental reserves accurately reflect the cost of remedial actions currently required.

Other

Other reserves of $71 million for 2013 include liabilities for various claims, such as longshoremen disability claims, and claims for property, automobile and general liability.

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Properties

12 Months Ended

Dec. 27, 2013

Property, Plant and Equipment [Abstract]

Properties

 Properties

A detail of the Company’s net properties are as follows:

(Dollars in Millions)				Accumulated			Net Book		Annual Depreciation	Depreciation	Estimated Useful
December 2013		Cost		Depreciation			Value		Rate	Method	Life
Road
	Rail and Other Track Material	$	6,452	$	(1,270	)	$	5,182	2.9%	Group Life
	Ties	4,534		(947		)	3,587		4.0%	Group Life
	Grading	2,425		(448		)	1,977		1.5%	Group Life
	Ballast	2,612		(645		)	1,967		2.8%	Group Life
	Bridges, Trestles, and Culverts	2,008		(250		)	1,758		1.6%	Group Life
	Signals and Interlockers	1,922		(291		)	1,631		3.4%	Group Life
	Buildings	1,011		(355		)	656		2.5%	Group Life
	Other	3,654		(1,386		)	2,268		4.7%	Group Life
Total Road		24,618		(5,592		)	19,026				6-80 Years
Equipment
	Locomotive	4,987		(2,176		)	2,811		3.6%	Group Life
	Freight Cars	3,111		(1,135		)	1,976		3.1%	Group Life
	Work Equipment and Other	1,666		(914		)	752		7.1%	Group Life
Total Equipment		9,764		(4,225		)	5,539				5-38 Years
Land		1,842		—			1,842		N/A	N/A	N/A
Construction In Progress		854		—			854		N/A	N/A	N/A
Other		106		(76		)	30		N/A	Straight Line	4-30 Years
Total Properties		$	37,184	$	(9,893	)	$	27,291

NOTE 6.  Properties, continued

(Dollars in Millions)				Accumulated			Net Book		Annual Depreciation	Depreciation	Estimated Useful
December 2012		Cost		Depreciation			Value		Rate	Method	Life
Road
	Rail and Other Track Material	$	6,177	$	(1,131	)	$	5,046	2.9%	Group Life
	Ties	4,287		(861		)	3,426		4.0%	Group Life
	Grading	2,407		(414		)	1,993		1.5%	Group Life
	Ballast	2,528		(624		)	1,904		2.8%	Group Life
	Bridges, Trestles, and Culverts	1,962		(224		)	1,738		1.6%	Group Life
	Signals and Interlockers	1,787		(302		)	1,485		3.4%	Group Life
	Buildings	926		(316		)	610		2.5%	Group Life
	Other	3,345		(1,281		)	2,064		4.7%	Group Life
Total Road		23,419		(5,153		)	18,266				6-80 Years
Equipment
	Locomotive	4,747		(2,079		)	2,668		3.6%	Group Life
	Freight Cars	3,088		(1,119		)	1,969		3.1%	Group Life
	Work Equipment and Other	1,466		(810		)	656		7.1%	Group Life
Total Equipment		9,301		(4,008		)	5,293				5-38 Years
Land		1,745		—			1,745		N/A	N/A	N/A
Construction In Progress		602		—			602		N/A	N/A	N/A
Other		212		(68		)	144		N/A	Straight Line	4-30 Years
Total Properties		$	35,279	$	(9,229	)	$	26,050

Railroad Assets

The Company depreciates its rail assets, including main-line track, locomotives and freight cars, using the group-life method of accounting.  Assets depreciated under the group-life method of accounting comprise over 86% of total fixed assets of $37 billion on a gross basis as of December 2013.  All other depreciable assets of the Company are depreciated on a straight-line basis. The group-life method aggregates assets with similar lives and characteristics into groups and depreciates each of these groups as a whole.  When using the group-life method, an underlying assumption is that each group of assets, as a whole, is used and depreciated to the end of its recoverable life.

The Company currently utilizes more than 130 different depreciable asset categories to account for depreciation expense for the railroad assets that are depreciated under the group-life method of accounting.  Examples of depreciable asset categories include 18 different categories for crossties due to the different combinations of density classifications and asset types.  By utilizing various depreciable categories, the Company can more accurately account for the use of its assets.  All assets of the Company are depreciated on a time or life basis.

NOTE 6.  Properties, continued

The Company believes the group-life method of depreciation closely approximates the straight-line method of depreciation.  Additionally, due to the nature of most of its assets (e.g. track is one contiguous, connected asset) the Company believes that this is the most effective way to properly depreciate its assets.

Under the group-life method of accounting, the service lives and salvage values for each group of assets are determined by completing periodic depreciation studies and applying management’s assumptions regarding the service lives of its properties.  A depreciation study (also referred to as a life study) is the periodic review of asset service lives, salvage values, accumulated depreciation, and other related factors for group assets conducted by a third-party specialist, analyzed by the Company’s management and approved by the Surface Transportation Board (“STB”), the regulatory board that has broad jurisdiction over railroad practices.  The STB requires depreciation studies be performed for equipment assets every three years and for road (e.g. bridges and signals) and track (e.g. rail, ties and ballast) assets every six years.  The Company believes the frequency currently required by the STB provides adequate review of asset service lives and that a more frequent review would not result in a material change due to the long-lived nature of most of the assets.

The results of the depreciation study process determine the service lives for each asset group under the group-life method.  Road assets, including main-line track, have estimated service lives ranging from six years for system roadway machinery to 80 years for grading (construction of protection for the roadway, tracks and embankments).  Equipment assets, including locomotives and freight cars, have estimated service lives ranging from six years for technology assets to 38 years for work equipment.

Changes in asset service lives due to the results of the depreciation studies are applied on a prospective basis and could significantly impact future periods’ depreciation expense, and thus, the Company's results of operations.

There are several factors taken into account during the depreciation study and they include:

• statistical analysis of historical life and salvage data for each group of property;

• statistical analysis of historical retirements for each group of property;

• evaluation of current operations;

• evaluation of technological advances and maintenance schedules;

• previous assessment of the condition of the assets and outlook for their continued use;

• expected net salvage to be received upon retirement; and

• comparison of assets to the same asset groups with other companies.

For retirements or disposals of depreciable rail assets that occur in the ordinary course of business, the asset cost (net of salvage value or sales proceeds) is charged to accumulated depreciation and no gain or loss is recognized.  As individual assets within a specific group are retired or disposed of, resulting gains and losses are recorded in accumulated depreciation.  As part of the depreciation study, an assessment of the recorded amount of accumulated depreciation is made to determine if it is deficient (or in excess) of the appropriate amount indicated by the study. Any such deficiency (or excess), including any deferred gains or losses, is amortized as a component of depreciation expense over the remaining service life of the asset group until the next required depreciation study. Since the overall assumption with the group-life method of accounting is that the assets within the group on average have the same service life and characteristics, it is therefore concluded that the deferred gains and losses offset over time.

NOTE 6.  Properties, continued

Since the rail network is one contiguous, connected network it is impractical to maintain specific identification records for these assets.  For road assets (such as rail and track related items), CSX utilizes a first-in, first-out approach to asset retirements.  The historical cost of these replaced assets is estimated using inflation indices published by the Bureau of Labor Statistics applied to the replacement value based on the age of the retired asset.  The indices are used because they closely correlate with the major cost of the materials comprising the applicable road assets.

Equipment assets (such as locomotives and freight cars) are specifically identified.  When an equipment asset is retired that has been depreciated using the group-life method, the cost is reduced from the cost base and recorded in accumulated depreciation.

In the event that large groups of assets are removed from service as a result of unusual acts or sales, resulting gains and losses are recognized immediately. These acts are not considered to be in the normal course of business and are therefore recognized when incurred.  Examples of such acts would be the major destruction of assets due to significant storm damage (e.g. major hurricanes), the sale of a rail line segment or the disposal of an entire class of assets (e.g. disposal of all refrigerated freight cars).  Abnormal operating gains were $65 million in 2013, $104 million in 2012 and $14 million in 2011 and all relate to the disposition of operating rail corridors. Each year includes gains from the 2011 sale of an operating rail corridor to the state of Florida. See the Significant Property Disposition section below for further details on the transaction with the state of Florida. In 2013, a gain was recognized for a non-monetary exchange of easements and rail assets, and in 2012, a gain was recognized for a sale of operating rail corridor to the Commonwealth of Massachusetts.

Recent experience with depreciation studies has resulted in depreciation rate changes, which did not materially affect the Company’s annual depreciation expense of $1.1 billion, $1.1 billion, and $976 million for 2013, 2012, and 2011, respectively.  In 2012, the Company completed a depreciation study for its equipment assets and a technical update (an update to the prior depreciation study) for its road and track assets.

Non-Railroad Assets

The majority of non-railroad property is depreciated using the straight-line method on a per asset basis.  The depreciable lives of this property are periodically reviewed by the Company and any changes are applied on a prospective basis.  Amortization expense recorded under capital leases is included in depreciation expense on the consolidated income statements.  For retirements or disposals of non-railroad depreciable assets and all dispositions of land, the resulting gains or losses are recognized in earnings at the time of disposal. During 2012, the Company recognized a gain of $57 million related to the sale of non-operating property, which is recognized in other income in the consolidated statements of income. These gains and losses were not material for any other period presented.

Impairment Review

Properties and other long-lived assets are reviewed for impairment whenever events or business conditions indicate the carrying amount of such assets may not be fully recoverable. Initial assessments of recoverability are based on estimates of undiscounted future net cash flows associated with an asset or a group of assets in accordance with the Property, Plant, and Equipment Topic in the ASC.  Where impairment is indicated, the assets are evaluated and their carrying amount is reduced to fair value based on discounted net cash flows or other estimates of fair value.

NOTE 6.  Properties, continued

Capital Expenditures

The Company’s capital spending includes purchased or self-constructed assets and property additions that substantially extend the service life or increase the utility of those assets.  Indirect costs that can be specifically traced to capital projects are also capitalized.  The Company is committed to maintaining and improving its existing infrastructure and expanding its network for long-term growth.  Rail operations are capital intensive and CSX accounts for these costs in accordance with GAAP and the Company’s capitalization policy.  All properties are stated at historical cost less an allowance for accumulated depreciation.

The Company’s largest category of capital spending is the replacement of track assets and the acquisition or construction of new assets that enable CSX to enhance its operations or provide new capacity offerings to its customers.  These construction projects are typically completed by CSXT employees.  Costs for track asset replacement and capacity projects that are capitalized include:

• labor costs, because many of the assets are self-constructed;

• costs to purchase or construct new track or to prepare ground for the laying of track;

• welding (rail, field and plant) which are processes used to connect segments of rail;

• new ballast, which is gravel and crushed stone that holds track in line;

• fuels and lubricants associated with tie, rail and surfacing work which is the process of raising track to a designated elevation over an extended distance;

• cross, switch and bridge ties which are the braces that support the rails on a track;

• gauging which is the process of standardizing the distance between rails;

• handling costs associated with installing ties or ballast; and

• other track materials.

The primary cost in self-constructed track replacement work is labor.  CSXT engineering employees directly charge their labor to the track replacement project (the capitalized depreciable property). These employees concurrently perform deconstruction and installation of track material. Because of this concurrent process, CSX must estimate the amount of labor that is related to deconstruction versus installation.

Through analysis of CSXT’s track replacement process, CSX determined that approximately 20% of labor costs associated with track material installation is related to the deconstruction of old track and 80% is associated with the installation of new track.

Capital spending related to locomotives and freight cars comprises the second largest category of the Company’s capital assets.  This category includes purchase costs of locomotives and freight cars as well as certain equipment leases that are considered to be capital leases in accordance with the Leases Topic in the ASC.  In addition, costs to modify or rebuild these assets are capitalized if the spending incurred extends the asset’s service life or improves utilization.  Improvement projects must meet specified dollar thresholds to be capitalized and are reviewed by management to determine proper accounting treatment.

Routine repairs and maintenance costs, for all asset categories, are expensed as incurred.

NOTE 6.  Properties, continued

Significant Property Disposition

In November 2011, the Company sold 61 miles of operating rail corridor to the Florida Department of Transportation. This corridor will be used by the state of Florida for its new commuter rail operation known as SunRail, which is expected to alleviate highway congestion. The Company diverted a portion of the corridor's existing rail traffic and relocated terminal operations to an adjacent rail corridor in Florida. As part of the transaction, the Company received $173 million in proceeds ($148 million in cash and a $25 million receivable, held in escrow and payable no later than April 2014) and up to $259 million in government grants. These grants are related to reimbursable capital expenditure projects in Florida and are recorded as a reduction of the carrying value of the related asset as received. This agreement also obligated the Company to invest a total of $500 million in routine capital expenditures and maintenance related to transportation capacity, facilities or equipment in Florida, including diversion and relocation costs related to this transaction within an eight year period following the transaction. The Company invested $142 million, $311 million and $47 million in 2013, 2012 and 2011, respectively. The required investment obligation was fulfilled during the second quarter of 2013.

This transaction contains multiple elements with separate accounting recognition for the sale of real estate and receipt of the grants. The proceeds related to the sale of real estate approximate fair value. Fair value was determined by management in accordance with the Fair Value Measurement Topic in the ASC using level 3 measurements and with the assistance of an independent third-party appraiser.

In accordance with the Real Estate Sales Topic in the ASC, this sale of real estate resulted in a deferred gain of $160 million. The deferred gain is primarily recognized into income ratably as the investment obligation is fulfilled. The Company recognized a gain of $43 million, $94 million and $14 million in 2013, 2012 and 2011, respectively. This gain is included in materials, supplies and other in the consolidated income statements. Going forward, the Company expects no further material gains. The deferred gain balance included in the consolidated balance sheets is in the table below.

	Deferred gain as of
(Dollars in Millions)	December 2013		December 2012
Current portion, included in Other Current Liabilities	$	9	$	43
Long term portion, included in Other Long-Term Liabilities	—		9
Total	$	9	$	52

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Employee Benefit Plans

12 Months Ended

Dec. 27, 2013

Defined Benefit Plans and Other Postretirement Benefit Plans Disclosures [Abstract]

Employee Benefit Plans

Employee Benefit Plans

The Company sponsors defined benefit pension plans principally for salaried, management personnel.  For employees hired on or before December 31, 2002, the plans provide eligible employees with retirement benefits based predominantly on years of service and compensation rates near retirement.  For employees hired in 2003 or thereafter, benefits are determined based on a cash balance formula, which provides benefits by utilizing interest and pay credits based upon age, service and compensation. In addition to these plans, the Company sponsors a self-insured, post-retirement medical plan and a life insurance plan that provide benefits to full-time, salaried, management employees, hired prior to January 1, 2003, upon their retirement if certain eligibility requirements are met.  Prior to 2011, the post-retirement medical plan was partially funded by all participating retirees, with retiree contributions adjusted annually.  Beginning in 2011, Medicare-eligible retirees are covered by a health reimbursement arrangement, which is an employer-funded account that can be used for reimbursement of eligible medical expenses. Non-Medicare eligible retirees are covered by a self-insured program. The life insurance plan is non-contributory.

The Company engages independent, external actuaries to compute the amounts of liabilities and expenses related to these plans subject to the assumptions that the Company selects. In order to perform this valuation, the actuaries are provided with the details of the population covered at the beginning of the year, summarized in the table below, and projects that population forward to the end of the year.

NOTE 8. Employee Benefit Plans, continued

	Summary of Participants as of
	January 1, 2013
	Pension Plans	Post-retirement Medical Plan
Active Employees	5,153	2,176
Retirees and Beneficiaries	11,569	12,277
Other(a)	5,715	112
Total	22,437	14,565

(a) For pension plans, the other category consists mostly of terminated but vested former employees.  For post-retirement plans, the other category consists of employees on long-term disability that have not yet retired.

The benefit obligation for these plans represents the liability of the Company for current and retired employees and is affected primarily by the following:

• service cost (benefits attributed to employee service during the period);

• interest cost (interest on the liability due to the passage of time);

• actuarial gains/losses (experience during the year different from that assumed and changes in plan assumptions); and

• benefits paid to participants.

Cash Flows

Plan assets are amounts that have been segregated and restricted to provide qualified pension plan benefits and include amounts contributed by the Company and amounts earned from invested contributions, net of benefits paid. Qualified pension plan obligations are funded in accordance with prescribed regulatory requirements and with an objective of meeting minimum funding requirements necessary to avoid restrictions on flexibility of plan operation and benefit payments.  During 2012, the Company made a contribution of $275 million to its qualified pension plans, of which $25 million was the required minimum contribution. At this time, the Company anticipates that no further contributions to its qualified pension plans will be required in 2014. The Company funds the cost of the post-retirement medical and life insurance benefits as well as nonqualified pension benefits on a pay-as-you go basis.

Future expected benefit payments are as follows:

	Expected Cash Flows
(Dollars in Millions)	Pension Benefits		Post-retirement Benefits
2014	$	167	$	38
2015	171		36
2016	173		34
2017	176		32
2018	179		31
2019-2023	910		126
Total	$	1,776	$	297

NOTE 8. Employee Benefit Plans, continued

Plan Assets

The CSX Investment Committee (the “Investment Committee”), whose members were selected by the Chief Financial Officer and approved by the Chief Executive Officer, is responsible for oversight and investment of plan assets.  The Investment Committee utilizes an investment asset allocation strategy that is monitored on an ongoing basis and that is updated periodically in consideration of plan or employee changes, or changing market conditions. These studies provide an extensive modeling of asset investment return in conjunction with projected plan liabilities and seek to evaluate how to maximize return within the constraints of acceptable risk. The current asset allocation targets 60% equity investments and 40% fixed income investments and cash.  Within equity, a further target is currently established for 40% of total plan assets in domestic equity and 20% in international equity.  Allocations are evaluated for levels within 3% of targeted allocations and are adjusted quarterly as necessary. 

The distribution of pension plan assets as of the measurement date is shown in the table below, and these assets are netted against the pension liabilities on the balance sheet.

	December 2013				December 2012
			Percent of				Percent of
(Dollars in Millions)	Amount		Total Assets		Amount		Total Assets
Equity	$	1,619	65	%	$	1,408	61	%
Fixed Income	795		32		829		36
Cash and Cash Equivalents	86		3		57		3
Total	$	2,500	100	%	$	2,294	100	%

Under the supervision of the Investment Committee, individual investments or fund managers are selected in accordance with standards of prudence applicable to asset diversification and investment suitability.  The Company also selects fund managers with differing investment styles and benchmarks their investment returns against appropriate indices.  Fund investment performance is continuously monitored.  Acceptable performance is determined in the context of the long-term return objectives of the fund and appropriate asset class benchmarks.

Within the Company's equity funds, the U.S. stock segment includes diversification among large and small capitalization stocks.  Guidelines established with individual managers limit investment by industry sectors, individual stock issuer concentration and the use of derivatives and CSX securities.

Fixed income securities guidelines established with individual managers specify the types of allowable investments, such as government, corporate and asset-backed bonds, and limit diversification between domestic and foreign investments and the use of derivatives.  Additionally, guidelines stipulate minimum credit quality constraints and any prohibited securities.

For detailed information regarding the fair value of pension assets, see Note 13, Fair Value Measurements.

NOTE 8. Employee Benefit Plans, continued

Benefit Obligation, Plan Assets and Funded Status

Changes in benefit obligation and the fair value of plan assets for the 2013 and 2012 calendar plan years are as follows:

	Pension Benefits						Post-retirement Benefits
	Plan Year			Plan Year			Plan Year			Plan Year
(Dollars in Millions)	2013			2012			2013			2012
Actuarial Present Value of Benefit Obligation
Accumulated Benefit Obligation	$	2,538		$	2,806		N/A			N/A
Projected Benefit Obligation	2,679			2,954			$	350		$	415
Change in Projected Benefit Obligation:
Projected Benefit Obligation atBeginning of Plan Year	$	2,954		$	2,668		$	415		$	388
Service Cost	49			44			3			4
Interest Cost	108			123			13			16
Plan Participants' Contributions	—			—			8			8
Plan Amendments	—			—			—			(1		)
Actuarial (Gain) Loss	(275		)	274			(49		)	43
Benefits Paid	(157		)	(155		)	(40		)	(43		)
Benefit Obligation at End of Plan Year	$	2,679		$	2,954		$	350		$	415
Change in Plan Assets:
Fair Value of Plan Assets at Beginning of Plan Year	$	2,294		$	1,850		$	—		$	—
Actual Return on Plan Assets	350			311			—			—
Qualified Employer Contributions	—			275			—			—
Non-qualified Employer Contributions	13			13			32			35
Plan Participants' Contributions	—			—			8			8
Benefits Paid	(157		)	(155		)	(40		)	(43		)
Fair Value of Plan Assets at End of Plan Year	2,500			2,294			—			—
Funded Status at End of Plan Year	$	(179	)	$	(660	)	$	(350	)	$	(415	)

NOTE 8. Employee Benefit Plans, continued

For qualified plan funding purposes, assets and discounted liabilities are measured in accordance with ERISA, as well as other related provisions of the Internal Revenue Code and related regulations.  Under these funding provisions and the alternative measurements available thereunder, the Company estimates its unfunded obligation for qualified plans on an annual basis.

In accordance with Compensation-Retirement Benefits Topic in the ASC, an employer must recognize the funded status of a pension or other post-retirement benefit plan by recording a liability (underfunded plan) or asset (overfunded plan) for the difference between the projected benefit obligation (or the accumulated post-retirement benefit obligation for a postretirement benefit plan) and the fair value of plan assets at the plan measurement date.  Amounts related to pension and post-retirement benefits recorded in other long-term assets, labor and fringe benefits payable and other long-term liabilities on the balance sheet are as follows:

	Pension Benefits						Post-retirement Benefits
	December			December			December			December
(Dollars in Millions)	2013			2012			2013			2012
Amounts Recorded in Consolidated
Balance Sheets:
Long-term Assets (a)	$	44		$	3		$	—		$	—
Current Liabilities	(14		)	(15		)	(38		)	(41		)
Long-term Liabilities	(209		)	(648		)	(312		)	(374		)
Net Amount Recognized in
Consolidated Balance Sheet	$	(179	)	$	(660	)	$	(350	)	$	(415	)

(a) Long-term assets relate to two of the qualified pension plans whose assets exceed projected benefit obligations.

The funded status, or amount by which the benefit obligation exceeds the fair value of plan assets, represents a liability. At December 2013, the status of CSX plans only with a net liability is disclosed below. The total fair value of all plans as of December 2013 was $2.5 billion, which includes the qualified pension plans with net assets.

	Aggregate		Aggregate
(Dollars in Millions)	Fair Value		Projected
Benefit Obligations in Excess of Plan Assets	of Plan Assets		Benefit Obligation
Projected Benefit Obligation	$	69	$	(292	)
Accumulated Benefit Obligation	69		(280		)

NOTE 8. Employee Benefit Plans, continued

Net Benefit Expense

The following table describes the components of expense/(income) related to net benefit expense recorded in labor and fringe on the income statement.

	Pension Benefits Fiscal Years									Post-retirement Benefits Fiscal Years
(Dollars in Millions)	2013			2012			2011			2013			2012			2011
Service Cost	$	49		$	44		$	40		$	3		$	4		$	2
Interest Cost	108			123			121			13			16			11
Expected Return on Plan Assets	(162		)	(166		)	(157		)	—			—			—
Amortization of Net Loss	100			82			71			14			9			7
Amortization of Prior Service Cost	—			—			—			(1		)	(1		)	(1		)
Net Periodic Benefit Expense	95			83			75			29			28			19
Settlement Gain(a)	(2		)	(2		)	(2		)	—			—			—
Total Expense	$	93		$	81		$	73		$	29		$	28		$	19

(a) Settlement gains were recognized as one of the pension plan's lump-sum payments exceeded the sum of the service cost and interest cost recognized.  The gain is the recognition of a portion of its accumulated other comprehensive income related to that plan.

Pension and Other Post-Employment Benefits Adjustments

The following table shows the pre-tax change in other comprehensive loss (income) attributable to the components of net expense and the change in benefit obligation for CSX for pension and other post-employment benefits.

(Dollars in Millions)	Pension Benefits						Post-retirement Benefits
Components of Other Comprehensive	December			December			December			December
Loss (Income)	2013			2012			2013			2012
Recognized in the balance sheet
(Gains) Losses	$	(462	)	$	130		$	(48	)	$	43
Prior service credits	—			—			—			(1		)
Expense (Income) recognized in the income statement
Amortization of net losses (a)	$	100		$	82		$	14		$	9
Settlement gain	(2		)	(2		)	—			—
Amortization of prior service costs (b)	—			—			(1		)	(1		)

(a) Amortization of net losses estimated to be expensed for 2014 is $57 million and $6 million for pension benefits and post-retirement benefits, respectively. The decrease in amortization is largely related to the impact of increasing discount rates.

(b) Amortization of prior service costs estimated to be expensed in 2014 are less than $1 million for pension benefits. The estimated post-retirement benefits amount to be credited to expense for 2014 is $1 million.

NOTE 8. Employee Benefit Plans, continued

As of December 2013, the balances of pre-tax amounts to be amortized that are included in accumulated other comprehensive loss (a component of shareholders’ equity) are as follows:

	Pension Benefits		Post-retirement Benefits
Losses	$	658	$	73
Prior Service Costs (Credits)	1		(3		)
Total	$	659	$	70

Assumptions

The expected long-term average rate of return on plan assets reflects the average rate of earnings expected on the funds invested, or to be invested, to provide for benefits included in the projected benefit obligation. In estimating that rate, the Company gives appropriate consideration to the returns being earned by the plan assets in the funds and the rates of return expected to be available for reinvestment as well as the current and projected asset mix of the funds.  Management balances market expectations obtained from various investment managers and economists with both market and actual plan historical returns to develop a reasonable estimate of the expected long-term rate of return on assets.  As this assumption is long-term, it is adjusted less frequently than other assumptions used in pension accounting. 

Weighted-average assumptions used in accounting for the plans were as follows:

	Pension Benefits				Post-retirement Benefits
	2013		2012		2013		2012
Expected Long-term Return on Plan Assets:
Benefit Cost for Plan Year	7.75	%	8.00	%	N/A		N/A
Benefit Obligation at End of Plan Year	7.50	%	7.75	%	N/A		N/A
Discount Rates:
Benefit Cost for Plan Year	3.75	%	4.75	%	3.20	%	4.25	%
Benefit Obligation at End of Plan Year	4.75	%	3.75	%	4.25	%	3.20	%
Salary Scale Inflation	3.75	%	3.75	%	N/A		N/A

NOTE 8. Employee Benefit Plans, continued

The net post-retirement benefit obligation for salaried, management personnel was determined using the following assumptions for the health care cost trend rate for medical plans. While it is expected that rates will decrease to 5% by 2020 for Medicare and 2021 for Non-Medicare eligible individuals, there may be yearly fluctuations. Additionally, there are cost differentials between Medicare and Non-Medicare eligible individuals which are reflected below.

	Post-retirement Benefits
	2013	2012
Health Care Cost Trend Rate:
Components of Benefit Cost:  Non-Medicare Eligible	8.5%	8.5%
Components of Benefit Cost:  Medicare Eligible	8.0%	8.0%
Benefit Obligations:  Non-Medicare Eligible	8.0%	8.5%
Benefit Obligations:  Medicare Eligible	7.5%	8.0%

For every 1% change in the assumed health care cost trend rate, service and interest cost will change by less than $1 million on a pre-tax basis on the consolidated income statements. For every 1% change in the health care cost trend rate, the Company’s benefit obligation will change by less than $1 million on the consolidated balance sheets.

Other Plans

Under collective bargaining agreements, the Company participates in a multi-employer benefit plan, which provides certain post-retirement health care and life insurance benefits to eligible contract employees. Premiums under this plan are expensed as incurred and amounted to $41 million, $46 million and $48 million in 2013, 2012 and 2011, respectively.

The Company maintains savings plans for virtually all full-time salaried employees and certain employees covered by collective bargaining agreements.  Expense associated with these plans was $37 million, $29 million and $28 million for 2013, 2012 and 2011, respectively.

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Commitments and Contingencies (Insurance and Legal) (Details) (USD $) In Millions, unless otherwise specified			1 Months Ended
	Dec. 27, 2013	Dec. 27, 2013 Pending Litigation [Member]	May 31, 2007 Fuel Surcharge Antitrust Litigation [Member] entity
Insurance
Non-catastrophic property deductible	$ 25
Casualty and catastrophic property deductible	50
Loss Contingency, Estimate [Abstract]
Minimum range of possible loss for legal proceedings		2
Maximum range of possible loss for legal proceedings		$ 15
Number of other U.S.-based entities mentioned in class action lawsuit			3

XML

Income Taxes (Unrecognized Tax Benefits) (Details) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 27, 2013	Dec. 28, 2012	Dec. 30, 2011
Income Tax Disclosure [Abstract]
Amount of unrecognized tax benefits that may favorably effect the effective income tax rate	$ 15	$ 17	$ 15
Amount of unrecognized tax benefits that will be resolved over next twelve months	3
Reconciliation of Unrecognized Tax Benefits, Excluding Amounts Pertaining to Examined Tax Returns [Roll Forward]
Balance at beginning of the year	24	22	20
Additions based on tax positions related to current year	2	6	1
Additions based on tax positions related to prior years	5	3	10
Reductions based on tax positions related to prior years	(6)	(1)	(3)
Settlements with taxing authorities	0	0	(5)
Lapse of statute of limitations	(2)	(6)	(1)
Balance at end of the year	$ 23	$ 24	$ 22

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Employee Benefit Plans (Summary of Participants) (Details)	Dec. 28, 2012 employees
Pension Plan, Defined Benefit [Member]
Defined Benefit Plan Disclosure [Line Items]
Active Employees	5,153
Retirees And Beneficiaries	11,569
Other	5,715	[1]
Total	22,437
Other Postretirement Benefit Plan, Defined Benefit [Member]
Defined Benefit Plan Disclosure [Line Items]
Active Employees	2,176
Retirees And Beneficiaries	12,277
Other	112	[1]
Total	14,565

[1] For pension plans, the other category consists mostly of terminated but vested former employees. For post-retirement plans, the other category consists of employees on long-term disability that have not yet retired.

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Commitments and Contingencies (Purchase Commitments) (Details) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 27, 2013 locomotives	Dec. 28, 2012 locomotives	Dec. 30, 2011 locomotives
Unrecorded Unconditional Purchase Obligation [Line Items]
Percentage of Locomotive Fleet Under Long-Term Maintenance Program	44.00%
Amounts Paid	$ 287	$ 287	$ 281
Number of locomotives under the long term maintenance plan	1,886	1,899	1,928
Unrecorded Unconditional Purchase Obligation [Abstract]
2014	613
2015	319
2016	260
2017	238
2018	226
Thereafter	1,367
Total	3,023
Locomotive & Maintenance Payments [Member]
Unrecorded Unconditional Purchase Obligation [Abstract]
2014	292
2015	253
2016	245
2017	232
2018	220
Thereafter	1,314
Total	2,556
Other Commitments [Member]
Unrecorded Unconditional Purchase Obligation [Abstract]
2014	321
2015	66
2016	15
2017	6
2018	6
Thereafter	53
Total	$ 467

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Fair Value Measurements (Pension Plan Assets) (Details) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 27, 2013	Dec. 28, 2012
Defined Benefit Plan Disclosure [Line Items]
Pension plan assets at fair value	$ 2,500	$ 2,294
Equity [Member]
Defined Benefit Plan Disclosure [Line Items]
Investment Committee equity target allocation percentage of pension assets	60.00%
Pension plan assets at fair value	1,619	1,408
Information technology [Member]
Defined Benefit Plan Disclosure [Line Items]
Pension plan assets at fair value	173	169
Consumer discretionary [Member]
Defined Benefit Plan Disclosure [Line Items]
Pension plan assets at fair value	152	125
Health care [Member]
Defined Benefit Plan Disclosure [Line Items]
Pension plan assets at fair value	126	96
Financials [Member]
Defined Benefit Plan Disclosure [Line Items]
Pension plan assets at fair value	116	83
Industrials [Member]
Defined Benefit Plan Disclosure [Line Items]
Pension plan assets at fair value	108	78
Energy [Member]
Defined Benefit Plan Disclosure [Line Items]
Pension plan assets at fair value	59	58
Consumer staples [Member]
Defined Benefit Plan Disclosure [Line Items]
Pension plan assets at fair value	43	55
Materials [Member]
Defined Benefit Plan Disclosure [Line Items]
Pension plan assets at fair value	29	25
Other [Member]
Defined Benefit Plan Disclosure [Line Items]
Pension plan assets at fair value	31	33
Fixed Income Funds [Member]
Defined Benefit Plan Disclosure [Line Items]
Investment Committee equity target allocation percentage of pension assets	40.00%
Pension plan assets at fair value	795	829
Mutual Funds [Member]
Defined Benefit Plan Disclosure [Line Items]
Pension plan assets at fair value	17	17
Corporate securities [Member]
Defined Benefit Plan Disclosure [Line Items]
Pension plan assets at fair value	568	606
Common trust funds [Member]
Defined Benefit Plan Disclosure [Line Items]
Pension plan assets at fair value	553	426
Partnerships [Member]
Defined Benefit Plan Disclosure [Line Items]
Pension plan assets at fair value	314	296
Government securities [Member]
Defined Benefit Plan Disclosure [Line Items]
Pension plan assets at fair value	186	178
Asset-backed securities [Member]
Defined Benefit Plan Disclosure [Line Items]
Pension plan assets at fair value	24	28
Cash equivalents [Member]
Defined Benefit Plan Disclosure [Line Items]
Pension plan assets at fair value	0	20
Derivatives and other [Member]
Defined Benefit Plan Disclosure [Line Items]
Pension plan assets at fair value	1	1
Level 1 [Member]
Defined Benefit Plan Disclosure [Line Items]
Pension plan assets at fair value	854	739
Level 1 [Member] | Information technology [Member]
Defined Benefit Plan Disclosure [Line Items]
Pension plan assets at fair value	173	169
Level 1 [Member] | Consumer discretionary [Member]
Defined Benefit Plan Disclosure [Line Items]
Pension plan assets at fair value	152	125
Level 1 [Member] | Health care [Member]
Defined Benefit Plan Disclosure [Line Items]
Pension plan assets at fair value	126	96
Level 1 [Member] | Financials [Member]
Defined Benefit Plan Disclosure [Line Items]
Pension plan assets at fair value	116	83
Level 1 [Member] | Industrials [Member]
Defined Benefit Plan Disclosure [Line Items]
Pension plan assets at fair value	108	78
Level 1 [Member] | Energy [Member]
Defined Benefit Plan Disclosure [Line Items]
Pension plan assets at fair value	59	58
Level 1 [Member] | Consumer staples [Member]
Defined Benefit Plan Disclosure [Line Items]
Pension plan assets at fair value	43	55
Level 1 [Member] | Materials [Member]
Defined Benefit Plan Disclosure [Line Items]
Pension plan assets at fair value	29	25
Level 1 [Member] | Other [Member]
Defined Benefit Plan Disclosure [Line Items]
Pension plan assets at fair value	31	33
Level 1 [Member] | Mutual Funds [Member]
Defined Benefit Plan Disclosure [Line Items]
Pension plan assets at fair value	17	17
Level 1 [Member] | Corporate securities [Member]
Defined Benefit Plan Disclosure [Line Items]
Pension plan assets at fair value	0	0
Level 1 [Member] | Common trust funds [Member]
Defined Benefit Plan Disclosure [Line Items]
Pension plan assets at fair value	0	0
Level 1 [Member] | Partnerships [Member]
Defined Benefit Plan Disclosure [Line Items]
Pension plan assets at fair value	0	0
Level 1 [Member] | Government securities [Member]
Defined Benefit Plan Disclosure [Line Items]
Pension plan assets at fair value	0	0
Level 1 [Member] | Asset-backed securities [Member]
Defined Benefit Plan Disclosure [Line Items]
Pension plan assets at fair value	0	0
Level 1 [Member] | Cash equivalents [Member]
Defined Benefit Plan Disclosure [Line Items]
Pension plan assets at fair value	0	0
Level 1 [Member] | Derivatives and other [Member]
Defined Benefit Plan Disclosure [Line Items]
Pension plan assets at fair value	0	0
Level 2 [Member]
Defined Benefit Plan Disclosure [Line Items]
Pension plan assets at fair value	1,646	1,555
Level 2 [Member] | Information technology [Member]
Defined Benefit Plan Disclosure [Line Items]
Pension plan assets at fair value	0	0
Level 2 [Member] | Consumer discretionary [Member]
Defined Benefit Plan Disclosure [Line Items]
Pension plan assets at fair value	0	0
Level 2 [Member] | Health care [Member]
Defined Benefit Plan Disclosure [Line Items]
Pension plan assets at fair value	0	0
Level 2 [Member] | Financials [Member]
Defined Benefit Plan Disclosure [Line Items]
Pension plan assets at fair value	0	0
Level 2 [Member] | Industrials [Member]
Defined Benefit Plan Disclosure [Line Items]
Pension plan assets at fair value	0	0
Level 2 [Member] | Energy [Member]
Defined Benefit Plan Disclosure [Line Items]
Pension plan assets at fair value	0	0
Level 2 [Member] | Consumer staples [Member]
Defined Benefit Plan Disclosure [Line Items]
Pension plan assets at fair value	0	0
Level 2 [Member] | Materials [Member]
Defined Benefit Plan Disclosure [Line Items]
Pension plan assets at fair value	0	0
Level 2 [Member] | Other [Member]
Defined Benefit Plan Disclosure [Line Items]
Pension plan assets at fair value	0	0
Level 2 [Member] | Mutual Funds [Member]
Defined Benefit Plan Disclosure [Line Items]
Pension plan assets at fair value	0	0
Level 2 [Member] | Corporate securities [Member]
Defined Benefit Plan Disclosure [Line Items]
Pension plan assets at fair value	568	606
Level 2 [Member] | Common trust funds [Member]
Defined Benefit Plan Disclosure [Line Items]
Pension plan assets at fair value	553	426
Level 2 [Member] | Partnerships [Member]
Defined Benefit Plan Disclosure [Line Items]
Pension plan assets at fair value	314	296
Level 2 [Member] | Government securities [Member]
Defined Benefit Plan Disclosure [Line Items]
Pension plan assets at fair value	186	178
Level 2 [Member] | Asset-backed securities [Member]
Defined Benefit Plan Disclosure [Line Items]
Pension plan assets at fair value	24	28
Level 2 [Member] | Cash equivalents [Member]
Defined Benefit Plan Disclosure [Line Items]
Pension plan assets at fair value	0	20
Level 2 [Member] | Derivatives and other [Member]
Defined Benefit Plan Disclosure [Line Items]
Pension plan assets at fair value	1	1
Level 3 [Member]
Defined Benefit Plan Disclosure [Line Items]
Pension plan assets at fair value	0	0
Level 3 [Member] | Information technology [Member]
Defined Benefit Plan Disclosure [Line Items]
Pension plan assets at fair value	0	0
Level 3 [Member] | Consumer discretionary [Member]
Defined Benefit Plan Disclosure [Line Items]
Pension plan assets at fair value	0	0
Level 3 [Member] | Health care [Member]
Defined Benefit Plan Disclosure [Line Items]
Pension plan assets at fair value	0	0
Level 3 [Member] | Financials [Member]
Defined Benefit Plan Disclosure [Line Items]
Pension plan assets at fair value	0	0
Level 3 [Member] | Industrials [Member]
Defined Benefit Plan Disclosure [Line Items]
Pension plan assets at fair value	0	0
Level 3 [Member] | Energy [Member]
Defined Benefit Plan Disclosure [Line Items]
Pension plan assets at fair value	0	0
Level 3 [Member] | Consumer staples [Member]
Defined Benefit Plan Disclosure [Line Items]
Pension plan assets at fair value	0	0
Level 3 [Member] | Materials [Member]
Defined Benefit Plan Disclosure [Line Items]
Pension plan assets at fair value	0	0
Level 3 [Member] | Other [Member]
Defined Benefit Plan Disclosure [Line Items]
Pension plan assets at fair value	0	0
Level 3 [Member] | Mutual Funds [Member]
Defined Benefit Plan Disclosure [Line Items]
Pension plan assets at fair value	0	0
Level 3 [Member] | Corporate securities [Member]
Defined Benefit Plan Disclosure [Line Items]
Pension plan assets at fair value	0	0
Level 3 [Member] | Common trust funds [Member]
Defined Benefit Plan Disclosure [Line Items]
Pension plan assets at fair value	0	0
Level 3 [Member] | Partnerships [Member]
Defined Benefit Plan Disclosure [Line Items]
Pension plan assets at fair value	0	0
Level 3 [Member] | Government securities [Member]
Defined Benefit Plan Disclosure [Line Items]
Pension plan assets at fair value	0	0
Level 3 [Member] | Asset-backed securities [Member]
Defined Benefit Plan Disclosure [Line Items]
Pension plan assets at fair value	0	0
Level 3 [Member] | Cash equivalents [Member]
Defined Benefit Plan Disclosure [Line Items]
Pension plan assets at fair value	0	0
Level 3 [Member] | Derivatives and other [Member]
Defined Benefit Plan Disclosure [Line Items]
Pension plan assets at fair value	$ 0	$ 0

XML

Debt and Credit Agreements (Tables)

12 Months Ended

Dec. 27, 2013

Debt Disclosure [Abstract]

Schedule of long-term debt instruments

Debt was as follows:

	Maturity at December	Average Interest Rates at December	December			December
(Dollars in Millions)	2013	2013	2013			2012
Notes	2014-2044	5.7%	$	8,935		$	9,151
Equipment Obligations(a)	2014-2023	7.3%	602			667
Capital Leases	2014-2026	8.1%	16			12
Convertible Debentures	2021	1.0%	2			2
Subtotal Long-term Debt (including current portion)			$	9,555		$	9,832
Less Debt Due within One Year			(533		)	(780		)
Long-term Debt (excluding current portion)			$	9,022		$	9,052

(a) These obligations are secured by an interest in certain railroad equipment.

Schedule of long-ter debt maturities

Long-term Debt Maturities

(Dollars in Millions)	Maturities as of
Fiscal Years Ending	December 2013
2014	$	533
2015	629
2016	22
2017	631
2018	619
Thereafter	7,121
Total Long-term Debt Maturities (including current portion)	$	9,555

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Stock Plans and Share-Based Compensation (Long-term Incentive Plans) (Details) (USD $) In Millions, except Share data, unless otherwise specified	12 Months Ended						0 Months Ended	12 Months Ended
	Dec. 27, 2013	Dec. 28, 2012	Dec. 30, 2011	Dec. 27, 2013 Long-term Incentive Plans [Member]	Dec. 28, 2012 Long-term Incentive Plans [Member]	Dec. 30, 2011 Long-term Incentive Plans [Member]	May 07, 2013 Performance Shares [Member] Two Thousand Thirteen Long-Term Incentive Plan (2013 LTIP) [Member]	Dec. 27, 2013 Performance Units [Member] Long-term Incentive Plans [Member] plan	Dec. 27, 2013 Restricted Stock Units (RSUs) [Member]	Dec. 27, 2013 Restricted Stock Units (RSUs) [Member] Long Term Incentive Plan - 2013 [Member]		Dec. 27, 2013 Restricted Stock Units (RSUs) [Member] Long Term Incentive Plan - 2013 [Member] Minimum [Member]	Dec. 27, 2013 Restricted Stock Units (RSUs) [Member] Long Term Incentive Plan - 2013 [Member] Maximum [Member]	Dec. 27, 2013 Restricted Stock Units (RSUs) [Member] Long Term Incentive Plan - 2014 [Member]		Dec. 27, 2013 Restricted Stock Units (RSUs) [Member] Long Term Incentive Plan - 2014 [Member] Minimum [Member]	Dec. 27, 2013 Restricted Stock Units (RSUs) [Member] Long Term Incentive Plan - 2014 [Member] Maximum [Member]	Dec. 27, 2013 Restricted Stock Units (RSUs) [Member] Long Term Incentive Plan - 2015 [Member]		Dec. 27, 2013 Restricted Stock Units (RSUs) [Member] Long Term Incentive Plan - 2015 [Member] Minimum [Member]	Dec. 27, 2013 Restricted Stock Units (RSUs) [Member] Long Term Incentive Plan - 2015 [Member] Maximum [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Percentage Of Grants With Performance Vesting, Operating Ratio							50.00%
Number of plans								3
Plan duration								3 years
Performance unit equivalent of CSX stock, in shares									1
Percentage of payout subject to reduction				(30.00%)
Total expense incurred due to long-term incentive plans	$ 14	$ 14	$ 30	$ 2	$ 3	$ 21
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Additional Disclosures [Abstract]
Number of target units outstanding										1,080,000	[1]			1,340,000	[1]			1,318,000	[1]
Weighted-average fair value at grant date				$ 25.24	$ 21.97					$ 25.63	[1]			$ 22.13	[1]			$ 25.32	[1]
Payout Range												0.00%	200.00%			0.00%	200.00%			0.00%	200.00%
Percentage Of Grants With Performance Vesting, Return On Assets							50.00%

[1] Number of target units granted and weighted-average fair value calculations above include the value of both initial grants and subsequent, smaller grants issued at different prices based on grant date fair value to new or promoted employees not previously included.

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Fair Value Measurements

12 Months Ended

Dec. 27, 2013

Fair Value Disclosures [Abstract]

Fair Value Measurements

Fair Value Measurements

The Financial Instruments Topic in the ASC requires disclosures about fair value of financial instruments in annual reports as well as in quarterly reports.  For CSX, this statement applies to certain investments, pension plan assets and long-term debt.  Also, the Fair Value Measurements and Disclosures Topic in the ASC clarifies the definition of fair value for financial reporting, establishes a framework for measuring fair value and requires additional disclosures about the use of fair value measurements.   

Various inputs are considered when determining the value of the Company's investments, pension plan assets and long-term debt.  The inputs or methodologies used for valuing securities are not necessarily an indication of the risk associated with investing in these securities.  These inputs are summarized in the three broad levels listed below.

NOTE 13.  Fair Value Measurements, continued

• Level 1 – observable market inputs that are unadjusted quoted prices for identical assets or liabilities in active markets

• Level 2 – other significant observable inputs (including quoted prices for similar securities, interest rates, credit risk, etc.)

• Level 3 – significant unobservable inputs (including the Company’s own assumptions in determining the fair value of investments)

The valuation methods described below may produce a fair value calculation that may not be indicative of net realizable value or reflective of future fair values. Furthermore, while the Company believes its valuation methods are appropriate and consistent with other market participants, the use of different methodologies or assumptions to determine the fair value of certain financial instruments could result in a different fair value measurement at the reporting date.

Investments

The Company's investment assets, valued with assistance from a third-party trustee, consist of certificates of deposits, commercial paper, corporate bonds, government securities and auction rate securities and are carried at fair value on the consolidated balance sheet per the Fair Value Measurements and Disclosures Topic in the ASC. There are several valuation methodologies used for those assets as described below.

• Certificates of Deposit and Commercial Paper (Level 2): Valued by discounting the related cash flows based on current yields of similar instruments with comparable durations.

• Corporate Bonds and Government Securities (Level 2): Valued using price evaluations reflecting the bid and/or ask sides of the market for a similar investment as of the last day of the period.

• Auction Rate Securities (Level 3): Valued using a discounted cash flow model, because there is currently no active market for trading.

The Company's investment assets are carried at fair value on the consolidated balance sheets as summarized in the table below. Additionally, the amortized cost basis of investments was $668 million and $742 million as of December 27, 2013 and December 28, 2012, respectively.

	Fiscal Years
	2013								2012
(Dollars in Millions)	Level 1		Level 2		Level 3		Total		Level 1		Level 2		Level 3		Total
Certificates of Deposit and Commercial Paper	$	—	$	472	$	—	$	472	$	—	$	555	$	—	$	555
Corporate Bonds	—		132		—		132		—		142		—		142
Government Securities	—		49		—		49		—		31		—		31
Auction Rate Securities	—		—		15		15		—		—		15		15
Total investments at fair value	$	—	$	653	$	15	$	668	$	—	$	728	$	15	$	743

NOTE 13.  Fair Value Measurements, continued

These investments have the following maturities:

(Dollars in Millions)	December 2013		December 2012
Less than 1 year	$	487	$	587
1 - 2 years	58		61
2 - 5 years	105		76
Greater than 5 years	18		19
Total investments at fair value	$	668	$	743

Long-term Debt

Long-term debt is reported at carrying amount on the consolidated balance sheet and is the Company's only financial instrument with fair values significantly different from their carrying amounts.  The majority of the Company's long-term debt is valued with assistance from an independent third party.  For those instruments not valued by the third party, the fair value has been estimated by applying market rates of similar instruments to the scheduled contractual debt payments and maturities. These market rates are provided by the same third party.  All of the inputs used to determine the fair value of the Company's long-term debt are Level 2 inputs.

The fair value of outstanding debt fluctuates with changes in a number of factors.  Such factors include, but are not limited to, interest rates, market conditions, values of similar financial instruments, size of the transaction, cash flow projections and comparable trades.  Fair value will exceed carrying value when the current market interest rate is lower than the interest rate at which the debt was originally issued.  The fair value of a company's debt is a measure of its current value under present market conditions.  It does not impact the financial statements under current accounting rules.  The fair value and carrying value of the Company's long-term debt is as follows:

(Dollars in Millions)	December 2013		December 2012
Long-term Debt (Including Current Maturities):
Fair Value	$	10,354	$	11,562
Carrying Value	9,555		9,832

Pension Plan Assets

Pension plan assets are reported at fair value on the consolidated balance sheet. The Investment Committee targets an allocation of pension assets to be generally 60% equity and 40% fixed income.  There are several valuation methodologies used for those assets as described below.

• Common stock (Level 1): Valued at the closing price reported on the active market on which the individual securities are traded on the last day of the year and classified in level 1 of the fair value hierarchy.

• Mutual funds (Level 1): Valued at the net asset value of shares held at year end based on quoted market prices determined in an active market. These assets are classified in level 1 of the fair value hierarchy.

NOTE 13.  Fair Value Measurements, continued

• Common collective trust funds (Level 2): This class consists of private funds that invest in government and corporate securities and various short-term debt instruments. The net asset value of the investments is determined by reference to the fair value of the underlying securities of the trust, which are valued primarily through the use of directly or indirectly observable inputs. These assets are classified in level 2 of the fair value hierarchy.

• Corporate bonds, derivatives, government securities, and asset-backed securities (Level 2): Valued using price evaluations reflecting the bid and/or ask sides of the market for a similar investment as of the last day of the calendar plan year. Asset-backed securities include commercial mortgage-backed securities and collateralized mortgage obligations. These assets are classified in level 2 of the fair value hierarchy.

• Partnerships (Level 2): Private equity valued using the fair market values associated with the underlying investments at year end using net asset per share and is classified in level 2 of the fair value hierarchy.

The pension plan assets at fair value by level, within the fair value hierarchy, as of calendar plan years 2013 and 2012:

	Fiscal Years
	2013								2012
(Dollars in Millions)	Level 1		Level 2		Level 3		Total		Level 1		Level 2		Level 3		Total
Common Stock:
Information technology	$	173	$	—	$	—	$	173	$	169	$	—	$	—	$	169
Consumer discretionary	152		—		—		152		125		—		—		125
Health care	126		—		—		126		96		—		—		96
Financials	116		—		—		116		83		—		—		83
Industrials	108		—		—		108		78		—		—		78
Energy	59		—		—		59		58		—		—		58
Consumer staples	43		—		—		43		55		—		—		55
Materials	29		—		—		29		25		—		—		25
Other	31		—		—		31		33		—		—		33
Mutual funds	17		—		—		17		17		—		—		17
Corporate bonds	—		568		—		568		—		606		—		606
Common trust funds	—		553		—		553		—		426		—		426
Partnerships	—		314		—		314		—		296		—		296
Government securities	—		186		—		186		—		178		—		178
Asset-backed securities	—		24		—		24		—		28		—		28
Cash equivalents	—		—		—		—		—		20		—		20
Derivatives and other	—		1		—		1		—		1		—		1
Total investments at     fair value	$	854	$	1,646	$	—	$	2,500	$	739	$	1,555	$	—	$	2,294

For additional information related to pension assets, see Note 8, Employee Benefit Plans.

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Nature of Operations and Significant Accounting Policies (Tables)

12 Months Ended

Dec. 27, 2013

Organization, Consolidation and Presentation of Financial Statements [Abstract]

Schedule of Error Corrections and Prior Period Adjustments

The Company also determined that the effect of recording all corrections during the fourth quarter of 2013 would have been material to the financial statements. As a result, prior period financial statements have been revised to correct the errors in accordance with ASC 250 and the SEC's Staff Accounting Bulletin No. 108, Considering the Effects of Prior Year Misstatements when Quantifying Misstatements in Current Year Financial Statements, as shown in the tables below.

NOTE 1.  Nature of Operations and Significant Accounting Policies, continued

Dollars in Millions, Except Per Share Amounts	2012									2011
Consolidated Income Statements	As Previously Reported			Adjustment			As Revised			As Previously Reported			Adjustment			As Revised
Revenue	$	11,756		$	7		$	11,763		$	11,743		$	52		$	11,795
Operating Income	3,457			7			3,464			3,418			52			3,470
Earnings Before Income Taxes	2,964			7			2,971			2,888			52			2,940
Income Tax Expense	(1,105		)	(3		)	(1,108		)	(1,066		)	(20		)	(1,086		)
Net Earnings	1,859			4			1,863			1,822			32			1,854
Net Earnings Per Share, Basic	$	1.79		$	0.01		$	1.80		$	1.68		$	0.03		$	1.71
Net Earnings Per Share, Assuming Dilution	$	1.79		$	—		$	1.79		$	1.67		$	0.03		$	1.70
Consolidated Comprehensive Income Statements
Net Earnings	$	1,859		$	4		$	1,863		$	1,822		$	32		$	1,854
Comprehensive Earnings	1,798			4			1,802			1,718			32			1,750
Consolidated Balance Sheets
Accounts Receivable - Net	$	962		$	152		$	1,114		$	1,000		$	147		$	1,147
Total Current Assets	2,801			152			2,953			2,806			147			2,953
Total Assets	30,571			152			30,723			29,344			147			29,491
Accounts Payable	1,014			(66		)	948			1,018			(64		)	954
Income and Other Taxes Payable	85			84			169			129			81			210
Total Current Liabilities	2,627			18			2,645			2,558			17			2,575
Total Liabilities	21,569			18			21,587			20,876			17			20,893
Retained Earnings	8,876			134			9,010			8,275			130			8,405
Total Shareholders' Equity	9,002			134			9,136			8,468			130			8,598
Total Liabilities and Shareholders' Equity	$	30,571		$	152		$	30,723		$	29,344		$	147		$	29,491
Consolidated Cash Flow Statements
Net Earnings	$	1,859		$	4		$	1,863		$	1,822		$	32		$	1,854
Changes in Operating Assets and Liabilities
Accounts Receivable	67			(6		)	61			(59		)	(58		)	(117		)
Accounts Payable	(3		)	(1		)	(4		)	70			6			76
Income and Other Taxes Payable	(17		)	3			(14		)	96			20			116
Net Cash Provided by Operating Activities	$	2,946		$	—		$	2,946		$	3,491		$	—		$	3,491
Statement of Changes in Shareholders' Equity	2010
Retained Earnings	$	9,087		$	98		$	9,185

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Summarized Consolidating Financial Data (Income Statements) (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended												12 Months Ended
	Dec. 27, 2013	Sep. 27, 2013	Jun. 28, 2013	Mar. 29, 2013	Dec. 30, 2012	Sep. 28, 2012	Jun. 29, 2012	Mar. 30, 2012	Dec. 30, 2011	Sep. 30, 2011	Jul. 01, 2011	Apr. 01, 2011	Dec. 27, 2013		Dec. 28, 2012		Dec. 30, 2011
Consolidated Income Statement
Revenue	$ 3,032	$ 2,985	$ 3,046	$ 2,963	$ 2,895	$ 2,864	$ 2,986	$ 3,018	$ 2,993	$ 2,962	$ 3,013	$ 2,827	$ 12,026		$ 11,763	[1]	$ 11,795	[1]
Operating Expenses													8,553		8,299	[1]	8,325	[1]
Operating Income	813	840	940	880	815	824	917	908	883	877	920	790	3,473		3,464	[1]	3,470	[1]
Equity in Earnings of Subsidiaries													0		0		0
Interest Expense													(562)		(566)	[1]	(552)	[1]
Other Income - Net													11		73	[1]	22	[1]
Earnings Before Income Taxes													2,922		2,971	[1]	2,940	[1]
Income Tax Benefit (Expense)													(1,058)		(1,108)	[1]	(1,086)	[1]
Net Earnings	426	455	521	462	449	437	496	481	483	463	502	406	1,864		1,863	[1]	1,854	[1]
Comprehensive Earnings													2,277		1,802	[1]	1,750	[1]
CSX Corporation
Consolidated Income Statement
Revenue													0		0		0
Operating Expenses													(371)		(355)		(278)
Operating Income													371		355		278
Equity in Earnings of Subsidiaries													1,964		1,992		1,979
Interest Expense													(516)		(513)		(496)
Other Income - Net													(7)		(3)		2
Earnings Before Income Taxes													1,812		1,831		1,763
Income Tax Benefit (Expense)													52		32		91
Net Earnings													1,864		1,863		1,854
Comprehensive Earnings													2,277		1,802		1,750
CSX Transportation
Consolidated Income Statement
Revenue													11,950		11,696		11,728
Operating Expenses													9,091		8,779		8,679
Operating Income													2,859		2,917		3,049
Equity in Earnings of Subsidiaries													(1)		(2)		3
Interest Expense													(62)		(70)		(83)
Other Income - Net													(2)		61		19
Earnings Before Income Taxes													2,794		2,906		2,988
Income Tax Benefit (Expense)													(1,028)		(1,065)		(1,101)
Net Earnings													1,766		1,841		1,887
Comprehensive Earnings													1,825		1,818		1,873
Eliminations and Other
Consolidated Income Statement
Revenue													76		67		67
Operating Expenses													(167)		(125)		(76)
Operating Income													243		192		143
Equity in Earnings of Subsidiaries													(1,963)		(1,990)		(1,982)
Interest Expense													16		17		27
Other Income - Net													20		15		1
Earnings Before Income Taxes													(1,684)		(1,766)		(1,811)
Income Tax Benefit (Expense)													(82)		(75)		(76)
Net Earnings													(1,766)		(1,841)		(1,887)
Comprehensive Earnings													(1,825)		(1,818)		(1,873)
Retained Earnings
Consolidated Income Statement
Net Earnings													$ 1,864	[1]	$ 1,863	[1]	$ 1,854	[1]

[1] See the revision of prior period financial statements in Note 1. Nature of Operations and Significant Accounting Policies.

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Stock Plans and Share-Based Compensation (Stock Options) (Details) (USD $) In Millions, except Share data in Thousands, unless otherwise specified	12 Months Ended						0 Months Ended
	Dec. 27, 2013	Dec. 28, 2012	Dec. 30, 2011	Dec. 27, 2013 Employee Stock Option [Member] employees	Dec. 28, 2012 Employee Stock Option [Member]	Dec. 30, 2011 Employee Stock Option [Member]	May 07, 2013 Two Thousand Thirteen Long-Term Incentive Plan (2013 LTIP) [Member] Performance Shares [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Percentage Of Grants With Performance Vesting, Operating Ratio							50.00%
Share Based Compensation Arrangement By Share Based Payment Award Number Of Current Or Former Employees With Outstanding Stock Optons				0
Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercises in Period, Intrinsic Value				$ 27	$ 37	$ 84
Percentage Of Grants With Performance Vesting, Return On Assets							50.00%
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding [Roll Forward]
Outstanding & Exercisable at Beginning of Year (in shares)	1,672	4,145	9,111
Expired or Cancelled (in shares)	(9)	(15)	(27)
Exercised (in shares)	(1,663)	(2,458)	(4,939)
Outstanding & Exercisable at End of Year (in shares)	0	1,672	4,145
Weighted-Average Exercise Price [Abstract]
Outstanding & Exercisable (in dollars per share)	$ 5.36	$ 5.64	$ 5.82
Expired or cancelled (in dollars per share)	$ 5.36	$ 6.36	$ 6.44
Exercised (in dollars per share)	$ 5.36	$ 5.83	$ 5.96
Outstanding & Exercisable (in dollars per share)	$ 0.00	$ 5.36	$ 5.64

XML

Summarized Consolidating Financial Data (Tables)

12 Months Ended

Dec. 27, 2013

Summarized Consolidating Financial Data [Abstract]

Consolidating Income Statement

Consolidating Income Statements

(Dollars in Millions)

Fiscal Year Ended December 2013	CSX Corporation			CSX Transportation			Eliminations and Other			Consolidated
Revenue	$	—		$	11,950		$	76		$	12,026
Expense	(371		)	9,091			(167		)	8,553
Operating Income	371			2,859			243			3,473
Equity in Earnings of Subsidiaries	1,964			(1		)	(1,963		)	—
Interest Expense	(516		)	(62		)	16			(562		)
Other Income - Net	(7		)	(2		)	20			11
Earnings Before Income Taxes	1,812			2,794			(1,684		)	2,922
Income Tax Benefit (Expense)	52			(1,028		)	(82		)	(1,058		)
Net Earnings	$	1,864		$	1,766		$	(1,766	)	$	1,864
Total Comprehensive Earnings	$	2,277		$	1,825		$	(1,825	)	$	2,277
Fiscal Year Ended December 2012
Revenue	$	—		$	11,696		$	67		$	11,763
Expense	(355		)	8,779			(125		)	8,299
Operating Income	355			2,917			192			3,464
Equity in Earnings of Subsidiaries	1,992			(2		)	(1,990		)	—
Interest Expense	(513		)	(70		)	17			(566		)
Other Income - Net	(3		)	61			15			73
Earnings Before Income Taxes	1,831			2,906			(1,766		)	2,971
Income Tax Benefit (Expense)	32			(1,065		)	(75		)	(1,108		)
Net Earnings	$	1,863		$	1,841		$	(1,841	)	$	1,863
Total Comprehensive Earnings	$	1,802		$	1,818		$	(1,818	)	$	1,802
Fiscal Year Ended December 2011
Revenue	$	—		$	11,728		$	67		$	11,795
Expense	(278		)	8,679			(76		)	8,325
Operating Income	278			3,049			143			3,470
Equity in Earnings of Subsidiaries	1,979			3			(1,982		)	—
Interest Expense	(496		)	(83		)	27			(552		)
Other Income - Net	2			19			1			22
Earnings Before Income Taxes	1,763			2,988			(1,811		)	2,940
Income Tax Benefit (Expense)	91			(1,101		)	(76		)	(1,086		)
Net Earnings	$	1,854		$	1,887		$	(1,887	)	$	1,854
Total Comprehensive Earnings	$	1,750		$	1,873		$	(1,873	)	$	1,750

Consolidating Balance Sheets

Consolidating Balance Sheets

(Dollars in Millions)

As of December 27, 2013	CSX Corporation			CSX Transportation			Eliminations and Other			Consolidated
ASSETS
Current Assets:
Cash and Cash Equivalents	$	439		$	91		$	62		$	592
Short-term Investments	472			—			15			487
Accounts Receivable - Net	3			240			809			1,052
Receivable from Affiliates	1,141			2,635			(3,776		)	—
Materials and Supplies	—			252			—			252
Deferred Income Taxes	(5		)	161			(1		)	155
Other Current Assets	1			57			6			64
Total Current Assets	2,051			3,436			(2,885		)	2,602
Properties	1			34,987			2,196			37,184
Accumulated Depreciation	(1		)	(8,778		)	(1,114		)	(9,893		)
Properties - Net	—			26,209			1,082			27,291
Investments in Conrail	—			—			752			752
Affiliates and Other Companies	(39		)	612			(27		)	546
Investment in Consolidated Subsidiaries	20,226			—			(20,226		)	—
Other Long-term Assets	217			388			(14		)	591
Total Assets	$	22,455		$	30,645		$	(21,318	)	$	31,782
LIABILITIES AND SHAREHOLDERS' EQUITY
Current Liabilities:
Accounts Payable	$	110		$	809		$	38		$	957
Labor and Fringe Benefits Payable	38			491			58			587
Payable to Affiliates	3,298			535			(3,833		)	—
Casualty, Environmental and Other Reserves	—			136			15			151
Current Maturities of Long-term Debt	200			333			—			533
Income and Other Taxes Payable	(397		)	479			9			91
Other Current Liabilities	—			103			2			105
Total Current Liabilities	3,249			2,886			(3,711		)	2,424
Casualty, Environmental and Other Reserves	—			231			69			300
Long-term Debt	8,308			714			—			9,022
Deferred Income Taxes	(64		)	8,548			178			8,662
Other Long-term Liabilities	479			512			(121		)	870
Total Liabilities	11,972			12,891			(3,585		)	21,278
Shareholders' Equity:
Common Stock, $1 Par Value	1,009			181			(181		)	1,009
Other Capital	61			5,077			(5,077		)	61
Retained Earnings	9,936			12,514			(12,514		)	9,936
Accumulated Other Comprehensive Loss	(523		)	(43		)	43			(523		)
Noncontrolling Minority Interest	—			25			(4		)	21
Total Shareholders' Equity	10,483			17,754			(17,733		)	10,504
Total Liabilities and Shareholders' Equity	$	22,455		$	30,645		$	(21,318	)	$	31,782

NOTE 16.  Summarized Consolidating Financial Data, continued

Consolidating Balance Sheets

(Dollars in Millions)

As of December 28, 2012	CSX Corporation			CSX Transportation			Eliminations and Other			Consolidated
ASSETS
Current Assets
Cash and Cash Equivalents	$	481		$	235		$	68		$	784
Short-term Investments	555			—			32			587
Accounts Receivable - Net	3			579			532			1,114
Receivable from Affiliates	993			1,798			(2,791		)	—
Materials and Supplies	—			274			—			274
Deferred Income Taxes	52			62			5			119
Other Current Assets	11			64			—			75
Total Current Assets	2,095			3,012			(2,154		)	2,953
Properties	8			33,333			1,938			35,279
Accumulated Depreciation	(8		)	(8,225		)	(996		)	(9,229		)
Properties - Net	—			25,108			942			26,050
Investments in Conrail	—			—			695			695
Affiliates and Other Companies	(39		)	593			(43		)	511
Investment in Consolidated Subsidiaries	18,917			—			(18,917		)	—
Other Long-term Assets	186			368			(40		)	514
Total Assets	$	21,159		$	29,081		$	(19,517	)	$	30,723
LIABILITIES AND SHAREHOLDERS' EQUITY
Current Liabilities
Accounts Payable	$	133		$	780		$	35		$	948
Labor and Fringe Benefits Payable	35			391			42			468
Payable to Affiliates	2,679			411			(3,090		)	—
Casualty, Environmental and Other Reserves	—			124			16			140
Current Maturities of Long-term Debt	700			80			—			780
Income and Other Taxes Payable	(262		)	418			13			169
Other Current Liabilities	(1		)	139			2			140
Total Current Liabilities	3,284			2,343			(2,982		)	2,645
Casualty, Environmental and Other Reserves	—			256			81			337
Long-term Debt	8,005			1,047			—			9,052
Deferred Income Taxes	(153		)	8,131			118			8,096
Other Long-term Liabilities	901			656			(100		)	1,457
Total Liabilities	12,037			12,433			(2,883		)	21,587
Shareholders' Equity
Common Stock, $1 Par Value	1,020			181			(181		)	1,020
Other Capital	28			5,672			(5,672		)	28
Retained Earnings	9,010			10,874			(10,874		)	9,010
Accumulated Other Comprehensive Loss	(936		)	(102		)	102			(936		)
Noncontrolling Minority Interest	—			23			(9		)	14
Total Shareholders' Equity	9,122			16,648			(16,634		)	9,136
Total Liabilities and Shareholders' Equity	$	21,159		$	29,081		$	(19,517	)	$	30,723

Consolidating Cash Flow Statements

Consolidating Cash Flow Statements

(Dollars in Millions)

Fiscal Year Ended December 2013	CSX Corporation			CSX Transportation			Eliminations and Other			Consolidated
Operating Activities
Net Cash Provided by (Used in) Operating Activities	$	1,004		$	3,005		$	(742	)	$	3,267
Investing Activities
Property Additions	—			(2,053		)	(260		)	(2,313		)
Purchases of Short-term Investments	(1,251		)	—			(5		)	(1,256		)
Proceeds from Sales of Short-term Investments	1,335			—			66			1,401
Proceeds from Property Dispositions	—			53			—			53
Other Investing Activities	(134		)	(315		)	337			(112		)
Net Cash Provided by (Used in) Investing Activities	(50		)	(2,315		)	138			(2,227		)
Financing Activities
Long-term Debt Issued	500			—			—			500
Long-term Debt Repaid	(700		)	(80		)	—			(780		)
Dividends Paid	(600		)	(730		)	730			(600		)
Stock Options Exercised	9			—			—			9
Shares Repurchased	(353		)	—			—			(353		)
Other Financing Activities	148			(24		)	(132		)	(8		)
Net Cash Provided by (Used in) Financing Activities	(996		)	(834		)	598			(1,232		)
Net Decrease in Cash and Cash Equivalents	(42		)	(144		)	(6		)	(192		)
Cash and Cash Equivalents at Beginning of Period	481			235			68			784
Cash and Cash Equivalents at End of Period	$	439		$	91		$	62		$	592

NOTE 16.  Summarized Consolidating Financial Data, continued

Consolidating Cash Flow Statements

(Dollars in Millions)

Fiscal Year Ended December 2012	CSX Corporation			CSX Transportation			Eliminations and Other			Consolidated
Operating Activities
Net Cash Provided by (Used in) Operating Activities	$	579		$	2,716		$	(349	)	$	2,946
Investing Activities
Property Additions	—			(2,104		)	(237		)	(2,341		)
Purchases of Short-term Investments	(605		)	—			(28		)	(633		)
Proceeds from Sales of Short-term Investments	525			—			56			581
Proceeds from Property Dispositions	—			186			—			186
Other Investing Activities	(10		)	102			(162		)	(70		)
Net Cash Provided by (Used in) Investing Activities	(90		)	(1,816		)	(371		)	(2,277		)
Financing Activities
Long-term Debt Issued	1,100			—			—			1,100
Long-term Debt Repaid	(400		)	(106		)	(2		)	(508		)
Dividends Paid	(558		)	(715		)	715			(558		)
Stock Options Exercised	14			—			—			14
Shares Repurchased	(734		)	—			—			(734		)
Other Financing Activities	21			2			(5		)	18
Net Cash Provided by (Used in) Financing Activities	(557		)	(819		)	708			(668		)
Net (Decrease) Increase in Cash and Cash Equivalents	(68		)	81			(12		)	1
Cash and Cash Equivalents at Beginning of Period	549			154			80			783
Cash and Cash Equivalents at End of Period	$	481		$	235		$	68		$	784

NOTE 16.  Summarized Consolidating Financial Data, continued

Consolidating Cash Flow Statements

(Dollars in Millions)

Fiscal Year Ended December 2011	CSX Corporation			CSX Transportation			Eliminations and Other			Consolidated
Operating Activities
Net Cash Provided by (Used in) Operating Activities	$	1,231		$	2,746		$	(486	)	$	3,491
Investing Activities
Property Additions	—			(2,034		)	(263		)	(2,297		)
Purchases of Short-term Investments	(475		)	—			(17		)	(492		)
Proceeds from Sales of Short-term Investments	—			—			74			74
Proceeds from Property Dispositions	—			239			1			240
Other Investing Activities	(20		)	(133		)	41			(112		)
Net Cash Provided by (Used in) Investing Activities	(495		)	(1,928		)	(164		)	(2,587		)
Financing Activities
Long-term Debt Issued	1,200			—			—			1,200
Long-term Debt Repaid	(507		)	(95		)	(3		)	(605		)
Dividends Paid	(480		)	(680		)	680			(480		)
Stock Options Exercised	29			—			—			29
Shares Repurchased	(1,564		)	—			—			(1,564		)
Other Financing Activities	35			(7		)	(21		)	7
Net Cash Provided by (Used in) Financing Activities	(1,287		)	(782		)	656			(1,413		)
Net (Decrease) Increase in Cash and Cash Equivalents	(551		)	36			6			(509		)
Cash and Cash Equivalents at Beginning of Period	1,100			118			74			1,292
Cash and Cash Equivalents at End of Period	$	549		$	154		$	80		$	783

XML

CONSOLIDATED BALANCE SHEETS (Parenthetical) (USD $)	Dec. 27, 2013	Dec. 28, 2012
Statement of Financial Position [Abstract]
Common stock par value (dollars per share)	$ 1.00	$ 1.00

XML

Related Party Transactions (Future Lease Payment under Asset Agreement) (Details) (USD $) In Millions, unless otherwise specified	Dec. 27, 2013
Related Party Transaction [Line Items]
2014	$ 79
2015	73
2016	64
2017	55
2018	46
Thereafter	275
Total	592
Corporate Joint Venture [Member]
Related Party Transaction [Line Items]
2014	25
2015	25
2016	25
2017	25
2018	25
Thereafter	144
Total	$ 269

XML

Earnings Per Share

12 Months Ended

Dec. 27, 2013

Earnings Per Share [Abstract]

Earnings Per Share

Earnings Per Share

The following table sets forth the computation of basic earnings per share and earnings per share, assuming dilution:

	Fiscal Years
	2013		2012 (a)		2011 (a)
Numerator (Dollars in Millions):
Net Earnings	$	1,864	$	1,863	$	1,854
Dividend Equivalents on Restricted Stock	1		1		1
Net Earnings, Attributable to Common Shareholders	$	1,865	$	1,864	$	1,855
Denominator (Units in Millions):
Average Common Shares Outstanding	1,019		1,038		1,083
Other Potentially Dilutive Common Shares (b)	—		2		6
Average Common Shares Outstanding, Assuming Dilution	1,019		1,040		1,089
Net Earnings Per Share, Basic	$	1.83	$	1.80	$	1.71
Net Earnings Per Share, Assuming Dilution	$	1.83	$	1.79	$	1.70

(a) See the revision of prior period financial statements in Note 1. Nature of Operations and Significant Accounting Policies.

(b) Other potentially dilutive common shares include convertible debt, stock options, common stock equivalents and performance units granted under a long-term management incentive compensation plan.

Basic earnings per share is based on the weighted-average number of shares of common stock outstanding.  Earnings per share, assuming dilution, is based on the weighted-average number of shares of common stock outstanding adjusted for the effects of common stock that may be issued as a result of the following types of potentially dilutive instruments:

• convertible debt;

• employee stock options; and

• other equity awards, which include long-term incentive awards.

NOTE 2.  Earnings Per Share, continued

The Earnings Per Share Topic in the ASC requires CSX to include additional shares in the computation of earnings per share, assuming dilution.  The additional shares included in diluted earnings per share represent the number of shares that would be issued if all of the above potentially dilutive instruments were converted into CSX common stock.

When calculating diluted earnings per share, the Earnings Per Share Topic in the ASC requires CSX to include the potential shares that would be outstanding if all outstanding stock options were exercised.   This is offset by shares CSX could repurchase using the proceeds from these hypothetical exercises to obtain the common stock equivalent.  This number is different from outstanding stock options, which is included in Note 4, Stock Plans and Share-Based Compensation.  All stock options were dilutive for the periods presented; therefore, no stock options were excluded from the diluted earnings per share calculation.

Diluted shares outstanding are not impacted when debentures are converted into CSX common stock because those shares were already included in the diluted shares calculation.  Shares outstanding for basic earnings per share, however, are impacted on a weighted-average basis when conversions occur.  During 2013 and 2012, $7 thousand and $2 million, respectively, of face value convertible debentures were converted into approximately 1 thousand shares and 155 thousand shares of CSX common stock, respectively.  As of December 2013, approximately $2 million of convertible debentures at face value remained outstanding, which are convertible into 244 thousand shares of CSX common stock.

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Casualty, Environmental and Other Reserves (Environmental and Other) (Details) (USD $) In Millions, unless otherwise specified	Dec. 27, 2013 sites	Dec. 28, 2012	Dec. 30, 2011	Dec. 31, 2010
Environmental Reserves [Member]
Contingencies [Line Items]
Loss Contingency Accrual	$ 100	$ 88	$ 83	$ 107
Environmental impaired site	244
Other Reserves [Member]
Contingencies [Line Items]
Loss Contingency Accrual	$ 71	$ 64	$ 64	$ 59

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Income Taxes (Income Tax Expense) (Details) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 27, 2013	Dec. 28, 2012		Dec. 30, 2011
Earnings From Continuing Operations [Abstract]
Earnings Before Income Taxes	$ 2,922	$ 2,971	[1]	$ 2,940	[1]
Current [Abstract]
Federal	671	450	[1]	370	[1]
State	87	66	[1]	107	[1]
Total Current	758	516	[1]	477	[1]
Deferred [Abstract]
Federal	285	530	[1]	614	[1]
State	15	62	[1]	(5)	[1]
Subtotal Deferred	300	592	[1]	609	[1]
Income Tax Expense (Benefit)	$ 1,058	$ 1,108	[1]	$ 1,086	[1]

[1] See the revision of prior period financial statements in Note 1. Nature of Operations and Significant Accounting Policies.

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Employee Benefit Plans (Benefit obligation, Plan Assets and Funded Status) (Details) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 27, 2013	Dec. 28, 2012	Dec. 30, 2011
Defined Benefit Plan, Change in Fair Value of Plan Assets [Roll Forward]
Fair Value of Plan Assets at End of Plan Year	$ 2,500	$ 2,294
Pension Plan, Defined Benefit [Member]
Actuarial Present Value of Benefit Obligation [Abstract]
Accumulated Benefit Obligation	2,538	2,806
Projected Benefit Obligation	2,679	2,954	2,668
Defined Benefit Plan, Change in Benefit Obligation [Roll Forward]
Projected Benefit Obligation at Beginning of Year	2,954	2,668
Service Cost	49	44	40
Interest Cost	108	123	121
Plan Participants Contributions	0	0
Plan Amendments	0	0
Actuarial Net (Gains) Losses	(275)	274
Benefits Paid	(157)	(155)
Benefit Obligation at End of Plan Year	2,679	2,954	2,668
Defined Benefit Plan, Change in Fair Value of Plan Assets [Roll Forward]
Fair Value of Plan Assets at Beginning of Plan Year	2,294	1,850
Actual Return on Plan Assets	350	311
Plan Participants Contributions	0	0
Benefits Paid	(157)	(155)
Fair Value of Plan Assets at End of Plan Year	2,500	2,294	1,850
Funded Status at End of Plan Year	(179)	(660)
Other Postretirement Benefit Plan, Defined Benefit [Member]
Actuarial Present Value of Benefit Obligation [Abstract]
Projected Benefit Obligation	350	415	388
Defined Benefit Plan, Change in Benefit Obligation [Roll Forward]
Projected Benefit Obligation at Beginning of Year	415	388
Service Cost	3	4	2
Interest Cost	13	16	11
Plan Participants Contributions	8	8
Plan Amendments	0	(1)
Actuarial Net (Gains) Losses	(49)	43
Benefits Paid	(40)	(43)
Benefit Obligation at End of Plan Year	350	415	388
Defined Benefit Plan, Change in Fair Value of Plan Assets [Roll Forward]
Fair Value of Plan Assets at Beginning of Plan Year	0	0
Actual Return on Plan Assets	0	0
Plan Participants Contributions	8	8
Benefits Paid	(40)	(43)
Fair Value of Plan Assets at End of Plan Year	0	0	0
Funded Status at End of Plan Year	(350)	(415)
Qualified Employer Contributions [Member] | Pension Plan, Defined Benefit [Member]
Defined Benefit Plan, Change in Fair Value of Plan Assets [Roll Forward]
Employer Contributions	0	275
Qualified Employer Contributions [Member] | Other Postretirement Benefit Plan, Defined Benefit [Member]
Defined Benefit Plan, Change in Fair Value of Plan Assets [Roll Forward]
Employer Contributions	0	0
Non-qualified Employer Contributions [Member] | Pension Plan, Defined Benefit [Member]
Defined Benefit Plan, Change in Fair Value of Plan Assets [Roll Forward]
Employer Contributions	13	13
Non-qualified Employer Contributions [Member] | Other Postretirement Benefit Plan, Defined Benefit [Member]
Defined Benefit Plan, Change in Fair Value of Plan Assets [Roll Forward]
Employer Contributions	$ 32	$ 35

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Earnings Per Share (Tables)

12 Months Ended

Dec. 27, 2013

Earnings Per Share [Abstract]

Computation of basic and diluted earnings per share

The following table sets forth the computation of basic earnings per share and earnings per share, assuming dilution:

	Fiscal Years
	2013		2012 (a)		2011 (a)
Numerator (Dollars in Millions):
Net Earnings	$	1,864	$	1,863	$	1,854
Dividend Equivalents on Restricted Stock	1		1		1
Net Earnings, Attributable to Common Shareholders	$	1,865	$	1,864	$	1,855
Denominator (Units in Millions):
Average Common Shares Outstanding	1,019		1,038		1,083
Other Potentially Dilutive Common Shares (b)	—		2		6
Average Common Shares Outstanding, Assuming Dilution	1,019		1,040		1,089
Net Earnings Per Share, Basic	$	1.83	$	1.80	$	1.71
Net Earnings Per Share, Assuming Dilution	$	1.83	$	1.79	$	1.70

(a) See the revision of prior period financial statements in Note 1. Nature of Operations and Significant Accounting Policies.

(b) Other potentially dilutive common shares include convertible debt, stock options, common stock equivalents and performance units granted under a long-term management incentive compensation plan.

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Employee Benefit Plans (Weighted-Average Assumptions) (Details)	12 Months Ended
	Dec. 27, 2013	Dec. 28, 2012
Pension Plan, Defined Benefit [Member]
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Benefit Cost for Plan Year	7.75%	8.00%
Benefit Obligation at End of Plan Year	7.50%	7.75%
Benefit Cost for Plan Year	3.75%	4.75%
Benefit Obligation at End of Plan Year	4.75%	3.75%
Salary Scale Inflation	3.75%	3.75%
Other Postretirement Benefit Plan, Defined Benefit [Member]
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Benefit Cost for Plan Year	3.20%	4.25%
Benefit Obligation at End of Plan Year	4.25%	3.20%

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Fair Value Measurements (Tables)

12 Months Ended

Dec. 27, 2013

Fair Value Disclosures [Abstract]

Schedule of fair value of investment assets

The Company's investment assets are carried at fair value on the consolidated balance sheets as summarized in the table below. Additionally, the amortized cost basis of investments was $668 million and $742 million as of December 27, 2013 and December 28, 2012, respectively.

	Fiscal Years
	2013								2012
(Dollars in Millions)	Level 1		Level 2		Level 3		Total		Level 1		Level 2		Level 3		Total
Certificates of Deposit and Commercial Paper	$	—	$	472	$	—	$	472	$	—	$	555	$	—	$	555
Corporate Bonds	—		132		—		132		—		142		—		142
Government Securities	—		49		—		49		—		31		—		31
Auction Rate Securities	—		—		15		15		—		—		15		15
Total investments at fair value	$	—	$	653	$	15	$	668	$	—	$	728	$	15	$	743

Schedule of investment maturities

These investments have the following maturities:

(Dollars in Millions)	December 2013		December 2012
Less than 1 year	$	487	$	587
1 - 2 years	58		61
2 - 5 years	105		76
Greater than 5 years	18		19
Total investments at fair value	$	668	$	743

Schedule of fair value and carrying value of long-term debt

The fair value and carrying value of the Company's long-term debt is as follows:

(Dollars in Millions)	December 2013		December 2012
Long-term Debt (Including Current Maturities):
Fair Value	$	10,354	$	11,562
Carrying Value	9,555		9,832

Schedule of pension plan assets at fair value by level

The pension plan assets at fair value by level, within the fair value hierarchy, as of calendar plan years 2013 and 2012:

	Fiscal Years
	2013								2012
(Dollars in Millions)	Level 1		Level 2		Level 3		Total		Level 1		Level 2		Level 3		Total
Common Stock:
Information technology	$	173	$	—	$	—	$	173	$	169	$	—	$	—	$	169
Consumer discretionary	152		—		—		152		125		—		—		125
Health care	126		—		—		126		96		—		—		96
Financials	116		—		—		116		83		—		—		83
Industrials	108		—		—		108		78		—		—		78
Energy	59		—		—		59		58		—		—		58
Consumer staples	43		—		—		43		55		—		—		55
Materials	29		—		—		29		25		—		—		25
Other	31		—		—		31		33		—		—		33
Mutual funds	17		—		—		17		17		—		—		17
Corporate bonds	—		568		—		568		—		606		—		606
Common trust funds	—		553		—		553		—		426		—		426
Partnerships	—		314		—		314		—		296		—		296
Government securities	—		186		—		186		—		178		—		178
Asset-backed securities	—		24		—		24		—		28		—		28
Cash equivalents	—		—		—		—		—		20		—		20
Derivatives and other	—		1		—		1		—		1		—		1
Total investments at     fair value	$	854	$	1,646	$	—	$	2,500	$	739	$	1,555	$	—	$	2,294

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Related Party Transactions

12 Months Ended

Dec. 27, 2013

Related Party Transactions [Abstract]

Related Party Transactions

Related Party Transactions

Through a limited liability company, CSX and Norfolk Southern Corporation (“NS”) jointly own Conrail, Inc. CSX has a 42% economic interest and 50% voting interest in the jointly-owned entity, and NS has the remainder of the economic and voting interests.  Pursuant to the Investments-Equity Method and Joint Venture Topic in the ASC, CSX applies the equity method of accounting to its investment in Conrail.

Conrail owns rail infrastructure and operates for the joint benefit of CSX and NS.  This is known as the shared asset area. Conrail charges fees for right-of-way usage, equipment rentals and transportation, switching and terminal service charges in the shared asset area.   These expenses are included in materials, supplies and other on the consolidated income statements. Future minimum lease payments due to Conrail under the shared asset area agreements are as follows:

(Dollars in Millions)	Conrail Shared
Years	Asset Agreement
2014	$	25
2015	25
2016	25
2017	25
2018	25
Thereafter	144
Total	$	269

Also, included in materials, supplies and other are CSX’s 42% share of Conrail’s income and its amortization of the fair value write-up arising from the acquisition of Conrail and certain other adjustments.  The amortization primarily represents the additional after-tax depreciation expense related to the write-up of Conrail’s fixed assets when the original purchase price, from the 1997 acquisition of Conrail, was allocated based on fair value. This write-up of fixed assets resulted in a difference between CSX's investment in Conrail and its share of Conrail's underlying net equity, which is $362 million as of December 2013.

NOTE 12.  Related Party Transactions,continued

The following table details the related Conrail amounts included in materials, supplies and other in the Company’s consolidated income statements:

	Fiscal Years
(Dollars in Millions)	2013			2012			2011
Rents, Fees and Services	$	115		$	139		$	111
Purchase Price Amortization and Other	4			4			4
Equity in Income of Conrail	(35		)	(26		)	(24		)
Total Conrail Rents, Fees and Services	$	84		$	117		$	91

As required by the Related Party Disclosures Topic in the ASC, the Company has identified amounts below owed to Conrail, or its subsidiaries, representing liabilities under the operating, equipment and shared area agreements with Conrail.  The Company also executed two promissory notes with a subsidiary of Conrail which were included in long-term debt on the consolidated balance sheets.

	December		December
(Dollars in Millions)	2013		2012
Balance Sheet Information:
CSX Payable to Conrail (a)	$	172	$	175
Promissory Notes Payable to Conrail Subsidiary (b)
4.40% CSX Promissory Note due October 2035	73		73
4.52% CSXT Promissory Note due March 2035	23		23

(a) CSX Payable to Conrail is included on the consolidated balance sheet of CSX as accounts payable because it is short term in nature.

(b) Promissory notes payable to Conrail are included on the consolidated balance sheet of CSX as long-term debt.

Interest expense from the promissory notes payable to a Conrail subsidiary was $4 million for 2013, 2012 and 2011, respectively.