CSX (CSX) 10-Q 14 Oct 15 2015 Q3 Quarterly report Financial data

Document And Entity Information

Document And Entity Information	9 Months Ended
	Sep. 25, 2015shares
Document and Entity Information [Abstract]
Entity Registrant Name	CSX CORP
Entity Central Index Key	277,948
Current Fiscal Year End Date	--12-25
Entity Filer Category	Large Accelerated Filer
Entity Common Stock, Shares Outstanding	974,944,791
Document Fiscal Year Focus	2,015
Document Fiscal Period Focus	Q3
Document Type	10-Q
Amendment Flag	false
Document Period End Date	Sep. 25, 2015

CONSOLIDATED INCOME STATEMENTS

CONSOLIDATED INCOME STATEMENTS (Unaudited) - USD ($) shares in Millions, $ in Millions	3 Months Ended		9 Months Ended
	Sep. 25, 2015	Sep. 26, 2014	Sep. 25, 2015	Sep. 26, 2014
Income Statement
Revenue	$ 2,939	$ 3,221	$ 9,030	$ 9,477
Expense
Labor and Fringe	787	845	2,491	2,468
Materials, Supplies and Other	580	610	1,766	1,860
Fuel	223	393	756	1,255
Depreciation	302	291	896	861
Equipment and Other Rents	114	106	328	321
Total Expense	2,006	2,245	6,237	6,765
Operating Income	933	976	2,793	2,712
Interest Expense	(136)	(137)	(404)	(412)
Nonoperating Income (Expense)	2	(26)	8	(31)
Earnings Before Income Taxes	799	813	2,397	2,269
Income Tax Expense	(292)	(304)	(895)	(833)
Net Earnings	$ 507	$ 509	$ 1,502	$ 1,436
Per Common Share
Net Earnings Per Share, Basic (in dollars per share)	$ 0.52	$ 0.51	$ 1.52	$ 1.43
Net Earnings Per Share, Assuming Dilution (in dollars per share)	$ 0.52	$ 0.51	$ 1.52	$ 1.43
Average Shares Outstanding (in shares)	981	999	986	1,003
Average Shares Outstanding, Assuming Dilution (in shares)	982	999	987	1,004
Cash Dividends Paid Per Common Share (in dollars per share)	$ 0.18	$ 0.16	$ 0.52	$ 0.47

CONSOLIDATED COMPREHENSIVE INCO

CONSOLIDATED COMPREHENSIVE INCOME STATEMENTS (Unaudited) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 25, 2015	Sep. 26, 2014	Sep. 25, 2015	Sep. 26, 2014
Statement of Comprehensive Income [Abstract]
Total Comprehensive Earnings	$ 518	$ 518	$ 1,523	$ 1,476

CONSOLIDATED BALANCE SHEETS (Un

CONSOLIDATED BALANCE SHEETS (Unaudited) - USD ($) $ in Millions	Sep. 25, 2015	Dec. 26, 2014	Sep. 26, 2014	Dec. 27, 2013
Current Assets:
Cash and Cash Equivalents	$ 541	$ 669	$ 479	$ 592
Short-term Investments	425	292
Accounts Receivable - Net	1,003	1,129
Materials and Supplies	309	273
Deferred Income Taxes	137	141
Other Current Assets	87	68
Total Current Assets	2,502	2,572
Properties	40,843	39,343
Accumulated Depreciation	(11,206)	(10,759)
Properties - Net	29,637	28,584
Other Long-term Assets	500	541
Total Assets	34,015	33,053
Current Liabilities:
Accounts Payable	842	845
Labor and Fringe Benefits Payable	447	613
Casualty, Environmental and Other Reserves	146	142
Current Maturities of Long-term Debt	18	228
Income and Other Taxes Payable	282	163
Other Current Liabilities	187	116
Total Current Liabilities	1,922	2,107
Casualty, Environmental and Other Reserves	270	276
Long-term Debt	10,088	9,514
Deferred Income Taxes	8,957	8,858
Other Long-term Liabilities	1,118	1,122
Total Liabilities	22,355	21,877
Common Stock, $1 Par Value	975	992
Other Capital	120	92
Retained Earnings	11,195	10,734
Accumulated Other Comprehensive Loss	(645)	(666)
Noncontrolling Interest	15	24
Total Shareholders' Equity	11,660	11,176
Total Liabilities and Shareholders' Equity	34,015	33,053
Investments in Conrail
Current Assets:
Investment in Affiliates and Consolidated Subsidiaries	793	779
Affiliates and Other Companies
Current Assets:
Investment in Affiliates and Consolidated Subsidiaries	$ 583	$ 577

CONSOLIDATED BALANCE SHEETS (U5

CONSOLIDATED BALANCE SHEETS (Unaudited) (Parenthetical) - $ / shares	Sep. 25, 2015	Dec. 26, 2014
Stockholders' Equity:
Common stock, par value (in dollars per share)	$ 1	$ 1

CONSOLIDATED CASH FLOW STATEMEN

CONSOLIDATED CASH FLOW STATEMENTS (Unaudited) - USD ($) $ in Millions	9 Months Ended
	Sep. 25, 2015	Sep. 26, 2014
OPERATING ACTIVITIES
Net Earnings	$ 1,502	$ 1,436
Adjustments to Reconcile Net Earnings to Net Cash Provided by Operating Activities:
Depreciation	896	861
Deferred Income Taxes	82	90
Gain on Property Dispositions	(20)	(5)
Other Operating Activities	47	(19)
Changes in Operating Assets and Liabilities:
Accounts Receivable	126	(116)
Other Current Assets	(61)	(47)
Accounts Payable	3	20
Income and Other Taxes Payable	110	142
Other Current Liabilities	(173)	(60)
Net Cash Provided by Operating Activities	2,512	2,302
INVESTING ACTIVITIES
Property Additions	(1,909)	(1,557)
Purchase of Short-term Investments	(1,170)	(1,170)
Proceeds from Sales of Short-term Investments	1,040	1,102
Proceeds from Property Dispositions	46	57
Other Investing Activities	42	(52)
Net Cash Used in Investing Activities	(1,951)	(1,620)
FINANCING ACTIVITIES
Long-term Debt Issued	600	1,000
Long-term Debt Repaid	(228)	(932)
Dividends Paid	(512)	(470)
Shares Repurchased	(546)	(388)
Other Financing Activities	(3)	(5)
Net Cash Used in Financing Activities	(689)	(795)
Net Decrease in Cash and Cash Equivalents	(128)	(113)
CASH AND CASH EQUIVALENTS
Cash and Cash Equivalents at Beginning of Period	669	592
Cash and Cash Equivalents at End of Period	$ 541	$ 479

Nature of Operations and Signif

Nature of Operations and Significant Accounting Policies	9 Months Ended
	Sep. 25, 2015
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Nature of Operations and Significant Accounting Policies	Nature of Operations and Significant Accounting Policies Background CSX Corporation (“CSX”), 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. 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. The Company's intermodal business, also part of CSXT, links customers to railroads via trucks and terminals. 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 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 include 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 - net because they are not considered to be operating activities of the Company. Results of these activities fluctuate with the timing of real estate transactions. Basis of Presentation In the opinion of management, the accompanying consolidated financial statements contain all normal, recurring adjustments necessary to fairly present the following: • Consolidated income statements for the quarters and nine months ended September 25, 2015 and September 26, 2014 ; • Consolidated comprehensive income statements for the quarters and nine months ended September 25, 2015 and September 26, 2014 ; • Consolidated balance sheets at September 25, 2015 and December 26, 2014 ; and • Consolidated cash flow statements for the nine months ended September 25, 2015 and September 26, 2014 . Pursuant to the rules and regulations of the Securities and Exchange Commission (“SEC”), certain information and disclosures normally included in the notes to the annual financial statements prepared in accordance with U.S. generally accepted accounting principles (“GAAP”) have been omitted from these interim financial statements. CSX suggests that these financial statements be read in conjunction with the audited financial statements and the notes included in CSX's most recent annual report on Form 10-K and any subsequently filed current reports on Form 8-K. NOTE 1. Nature of Operations and Significant Accounting Policies, continued Fiscal Year CSX follows a 52 /53 week fiscal reporting calendar with the last day of each reporting period ending on a Friday: • The third fiscal quarters of 2015 and 2014 consisted of 13 weeks ending on September 25, 2015 and September 26, 2014 , respectively. • Fiscal year 2015 and 2014 will each consist of 52 weeks ending on December 25, 2015 and December 26, 2014 , respectively. Except as otherwise specified, references to “ third quarter(s)” or “ nine months” indicate CSX's fiscal periods ending September 25, 2015 and September 26, 2014 , and references to "year-end" indicate the fiscal year ended December 26, 2014 . 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 $39 million and $ 41 million is included in the consolidated balance sheets as of the end of third quarter 2015 and December 2014 , respectively. New Accounting Pronouncements On April 7, 2015, the Financial Accounting Standards Board ("FASB") issued Accounting Standards Update, Interest - Imputation of Interest , which changes the financial statement presentation of debt issuance costs to be a direct reduction to long-term debt, rather than presented as a long-term asset. The amortization of debt issuance costs will continue to be included in interest expense. This standard is effective for annual reporting periods beginning after December 15, 2015 and will not have a material effect on the Company's financial condition, results of operations or liquidity. On July 9, 2015, the FASB approved a one-year deferral of the effective date of the Accounting Standards Update, Revenue from Contracts with Customers . This standard will now become effective for CSX beginning with the first quarter 2018 and can be adopted either retrospectively to each prior reporting period presented or as a cumulative effect adjustment as of the date of adoption. The Company is currently evaluating the impact of adopting this new guidance on the consolidated financial statements. Other items Share Repurchases In April 2015, the Company announced a new $ 2 billion share repurchase program, which is expected to be completed by April 2017. During the third quarter of 2015 and 2014, the Company repurchased approximately $262 million , or nine million shares, and $131 million , or four million shares, respectively. During the nine months of 2015 and 2014 , the Company repurchased $546 million , or 17 million shares, and $388 million , or 13 million shares, respectively. Management's assessment of market conditions and other factors guides the timing and volume of repurchases. Future share repurchases are expected to be funded by cash on hand, cash generated from operations and debt issuances. In accordance with the Equity Topic in the FASB's Accounting Standards Codification ("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

Earnings Per Share	9 Months Ended
	Sep. 25, 2015
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: Third Quarters Nine Months 2015 2014 2015 2014 Numerator (Dollars in millions) : Net Earnings $ 507 $ 509 $ 1,502 $ 1,436 Dividend Equivalents on Restricted Stock — — (1 ) (1 ) Net Earnings, Attributable to Common Shareholders $ 507 $ 509 $ 1,501 $ 1,435 Denominator (Units in millions) : Average Common Shares Outstanding 981 999 986 1,003 Other Potentially Dilutive Common Shares 1 — 1 1 Average Common Shares Outstanding, Assuming Dilution 982 999 987 1,004 Net Earnings Per Share, Basic $ 0.52 $ 0.51 $ 1.52 $ 1.43 Net Earnings Per Share, Assuming Dilution $ 0.52 $ 0.51 $ 1.52 $ 1.43 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 equivalents outstanding adjusted for the effects of common stock that may be issued as a result of potentially dilutive instruments. CSX's potentially dilutive instruments are made up of equity awards, which include long-term incentive awards. 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.

Share-Based Compensation

Share-Based Compensation	9 Months Ended
	Sep. 25, 2015
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]
Share-Based Compensation	Share-Based Compensation Under CSX's share-based compensation plans, awards primarily consist of performance grants, restricted stock awards, restricted stock units 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. In February 2015 , approximately 1 million performance units were granted to certain employees under a new long-term incentive plan ("2015-2017 LTIP") adopted under the CSX Stock and Incentive Award Plan. Payouts of performance units for the cycle ending with fiscal year 2017 will be based on the achievement of goals related to both operating ratio and return on assets in each case excluding non-recurring items as disclosed in the Company's financial statements. The cumulative operating ratio and average return on assets over the plan period will each comprise 50% of the payout and will be measured independently of the other. NOTE 3. Share-Based Compensation, continued Grants were made in performance units, with each unit representing the right to receive 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. Payouts for certain executive officers are subject to downward adjustment by up to 30% based upon total shareholder return relative to specified comparable groups. Additionally, as part of the new 2015-2017 LTIP, the Company granted approximately 312 thousand restricted stock units to certain employees in February 2015 . 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 attainment of performance goals. Both performance units and restricted stock units require participants to be employed through the final day of the respective vesting period except in the case of death, disability or retirement. For information related to the Company's other outstanding long-term incentive compensation, see CSX's most recent annual report on Form 10-K. Total pre-tax expense associated with all share-based compensation and the related income tax benefit are as follows: Third Quarters Nine Months (Dollars in millions) 2015 2014 2015 2014 Share-Based Compensation Expense $ 2 $ 9 $ 20 $ 20 Income Tax Benefit 1 4 8 8

Casualty, Environmental and Oth

Casualty, Environmental and Other Reserves	9 Months Ended
	Sep. 25, 2015
Casualty, Environmental and Other Reserves [Abstract]
Casualty, Environmental and Other Reserves	Casualty, Environmental and Other Reserves Casualty, environmental and other reserves are considered critical accounting estimates due to the need for significant management judgment. They are provided for in the consolidated balance sheets as follows: September 25, December 26, (Dollars in millions) Current Long-term Total Current Long-term Total Casualty: Personal Injury $ 58 $ 145 $ 203 $ 68 $ 123 $ 191 Occupational 3 14 17 3 15 18 Asbestos 5 48 53 5 51 56 Total Casualty 66 207 273 76 189 265 Environmental 58 30 88 48 46 94 Other 22 33 55 18 41 59 Total $ 146 $ 270 $ 416 $ 142 $ 276 $ 418 NOTE 4. Casualty, Environmental and Other Reserves, continued These liabilities are accrued when estimable and probable in accordance with the Contingencies Topic in the ASC. Actual settlements and claims received could differ, and 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 $273 million as of the end of third quarter 2015 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 management's estimates and 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. 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 actuary to assist management in assessing the value of personal injury claims. An analysis is performed by the actuary 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 exposure 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. Management reviews asserted occupational and asbestos claims quarterly. Unasserted, or incurred but not reported (“IBNR”), occupational claims are analyzed by management semi-annually. Since exposure to asbestos has been substantially eliminated, unasserted or IBNR asbestos claims are analyzed by a third-party specialist and reviewed by management annually. NOTE 4. Casualty, Environmental and Other Reserves, continued CSXT’s historical claim filings, settlement amounts, and dismissal rates are analyzed 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 CSXT’s employment records and industry data. From this analysis, management or the specialist estimate the IBNR claims liabilities. Environmental Environmental reserves were $88 million as of the end of third quarter 2015 . 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 253 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 ("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. 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 estimated cost of remedial actions currently required. NOTE 4. Casualty, Environmental and Other Reserves, continued Other Other reserves of $55 million as of the end of third quarter 2015 include liabilities for various claims, such as property, automobile and general liability. Also included in other reserves are longshoremen disability claims related to a previously owned international shipping business (these claims are in runoff) as well as claims for current port employees.

Commitments and Contingencies

Commitments and Contingencies	9 Months Ended
	Sep. 25, 2015
Commitments and Contingencies Disclosure [Abstract]
Commitments and Contingencies	Commitments and Contingencies 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 reasonably determined, 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 is likely to 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. 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 $3 million to $52 million in aggregate at September 25, 2015 . 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 in federal court in the District of Columbia, where they are now pending. 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. NOTE 5. Commitments and Contingencies, continued 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, but 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. The District Court remand proceedings are underway. Although a class certification hearing had been scheduled for early November 2015, it has been postponed pending the U.S. Supreme Court’s decision on a class certification issue in an unrelated case. The District Court has delayed proceedings on the merits of the case pending the outcome of the class certification remand proceedings. 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. Environmental CSXT has indemnified Pharmacia LLC (formerly known as Monsanto Company) for certain liabilities associated with real estate located in Kearny, New Jersey along the Lower Passaic River (the “Property”). The Property, which was formerly owned by Pharmacia, is now owned by CSXT. The indemnification and defense duties arise with respect to several matters. CSXT, on behalf of Pharmacia, is conducting a Remedial Investigation and Feasibility Study of the 17 -mile Lower Passaic River Study Area with approximately 60 other parties pursuant to an Administrative Settlement Agreement and Order on Consent with the U.S. Environmental Protection Agency ("EPA"). The EPA, using its CERCLA authority, seeks cleanup and removal costs and other damages associated with the presence of hazardous substances in the Lower Passaic River Study Area. In April 2014, the EPA announced its proposed plan to remediate the lower eight miles of the Lower Passaic River, which was based on a Focused Feasibility Study. After review of public comments, EPA is expected to issue its final cleanup plan in 2015. CSXT is also defending and indemnifying Pharmacia in a cooperative natural resource damages assessment process related to the Property. Based on currently available information, 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.

Employee Benefit Plans

Employee Benefit Plans	9 Months Ended
	Sep. 25, 2015
Compensation and Retirement Disclosure [Abstract]
Employee Benefit Plans	Employee Benefit Plans The Company sponsors defined benefit pension plans principally for salaried, management personnel. For employees hired prior to January 1, 2003, 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 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. Eligible retirees who are age 65 years or older (Medicare-eligible) are covered by a health reimbursement arrangement, which is an employer-funded account that can be used for reimbursement of eligible medical expenses. Eligible retirees younger than 65 years (non-Medicare eligible) are covered by a self-insured program partially funded by participating retirees. The life insurance plan is non-contributory. NOTE 6. Employee Benefit Plans, continued The Company engages independent actuaries to compute the amounts of liabilities and expenses relating to these plans subject to the assumptions that the Company selects. These amounts are reviewed by management. 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 (Dollars in millions) Third Quarters Nine Months 2015 2014 2015 2014 Service Cost $ 12 $ 11 $ 34 $ 33 Interest Cost 29 30 87 92 Expected Return on Plan Assets (41 ) (41 ) (122 ) (124 ) Amortization of Net Loss 17 15 52 43 Net Periodic Benefit Cost 17 15 51 44 Special Termination Employee Benefits (a) — — 7 — Total Expense $ 17 $ 15 $ 58 $ 44 Other Post-retirement Benefits (Dollars in millions) Third Quarters Nine Months 2015 2014 2015 2014 Service Cost $ 2 $ 1 $ 3 $ 2 Interest Cost 3 4 10 11 Amortization of Net Loss 1 1 3 4 Amortization of Prior Service Costs (1 ) — (1 ) (1 ) Total Expense $ 5 $ 6 $ 15 $ 16 (a) These charges result from a management workforce reduction program that was initiated in 2014 and was completed during the first quarter 2015. Qualified pension plan obligations are funded in accordance with regulatory requirements and with an objective of meeting minimum funding requirements necessary to avoid restrictions on flexibility of plan operation and benefit payments. No significant contributions to the Company's qualified pension plans are expected in 2015 .

Debt and Credit Agreements

Debt and Credit Agreements	9 Months Ended
	Sep. 25, 2015
Debt Disclosure [Abstract]
Debt and Credit Agreements	Debt and Credit Agreements Total activity related to long-term debt as of the end of third quarter 2015 is shown in the table below. For fair value information related to the Company's long-term debt, see Note 9, Fair Value Measurements. (Dollars in millions) Current Portion Long-term Portion Total Long-term debt as of December 2014 $ 228 $ 9,514 $ 9,742 2015 activity: Long-term debt issued — 600 600 Long-term debt repaid (228 ) — (228 ) Reclassifications 18 (18 ) — Discount, premium and other activity — (8 ) (8 ) Long-term debt as of third quarter 2015 $ 18 $ 10,088 $ 10,106 Debt Issuance On April 21, 2015, CSX issued $600 million of 3.95% notes due 2050 . 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 may be used for general corporate purposes, which may include repurchases of CSX's common stock, capital investment, working capital requirements, improvement in productivity and other cost reduction initiatives. Credit Facility On May 21, 2015, CSX replaced its existing $1 billion unsecured, revolving credit facility backed by a diverse syndicate of banks which was set to expire in September 2016. This new facility expires in May 2020 , 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. As of third quarter 2015 , CSX was in compliance with all covenant requirements under this facility. Receivables Securitization Facility The Company has a receivables securitization facility with a three -year term expiring in June 2017 . The purpose of this facility is to provide an alternative to commercial paper and a low cost source of short-term liquidity of up to $250 million , depending on eligible receivables balances. As of the date of this filing, the Company has no outstanding balances under this facility.

Income Taxes

Income Taxes	9 Months Ended
	Sep. 25, 2015
Income Tax Disclosure [Abstract]
Income Taxes	Income Taxes There have been no material changes to the balance of unrecognized tax benefits on the consolidated balance sheet during third quarters 2015 and 2014 .

Fair Value Measurements

Fair Value Measurements	9 Months Ended
	Sep. 25, 2015
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 and long-term debt. Disclosure of the fair value of pension plan assets is only required annually. Also, this rule 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. • 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 about the assumptions market participants would use 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 at amortized cost, which approximates fair value. • Corporate Bonds and Government Securities (Level 2) : Valued using broker quotes that utilize observable market inputs. • Auction Rate Securities (Level 3) : Valued using pricing models for which the assumptions utilize management’s estimates of market participant assumptions, because there is currently no active market for trading. NOTE 9. Fair Value Measurements, continued The Company's investment assets are carried at fair value on the consolidated balance sheets as summarized in the table below. The amortized cost basis of these investments was $532 million and $453 million as of September 25, 2015 and December 26, 2014 , respectively. September 25, December 26, (Dollars in Millions) Level 2 Level 3 Total Level 2 Level 3 Total Certificates of Deposit and Commercial Paper $ 425 $ — $ 425 $ 250 $ — $ 250 Corporate Bonds 70 — 70 141 — 141 Government Securities 33 — 33 51 — 51 Auction Rate Securities — 4 4 — 11 11 Total investments at fair value $ 528 $ 4 $ 532 $ 442 $ 11 $ 453 These investments have the following maturities: (Dollars in millions) September 25, December 26, Less than 1 year $ 425 $ 292 1 - 2 years 6 45 2 - 5 years 42 100 Greater than 5 years 59 16 Total $ 532 $ 453 Long-term Debt Long-term debt is reported at carrying amount on the consolidated balance sheets 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 adviser that utilizes closing transactions, market quotes or market values of comparable debt. For those instruments not valued by the independent adviser, 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 independent adviser. 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. NOTE 9. Fair Value Measurements, continued The fair value and carrying value of the Company's long-term debt is as follows: (Dollars in millions) September 25, December 26, 2014 Long-term Debt (Including Current Maturities): Fair Value $ 10,770 $ 11,042 Carrying Value 10,106 9,742

Other Comprehensive Income _ (L

Other Comprehensive Income / (Loss)	9 Months Ended
	Sep. 25, 2015
Equity [Abstract]
Other Comprehensive Income / (Loss)	Other Comprehensive Income / (Loss) 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 equal 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 $518 million for third quarters 2015 and 2014 , and $1,523 million and $1,476 million for nine months 2015 and 2014 , respectively. 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. Amounts reclassified in pension and other post-employment benefits to net earnings relate to the amortization of actuarial losses and are included in labor and fringe on the consolidated income statements. See Note 6. Employee Benefit Plans for further information. Other primarily represents CSX's share of AOCI of equity method investees. Amounts reclassified in other to net earnings are included in materials, supplies and other on the consolidated income statements. Pension and Other Post-Employment Benefits Other Accumulated Other Comprehensive Income (Loss) (Dollars in millions) Balance December 26, 2014, Net of Tax $ (611 ) $ (55 ) $ (666 ) Other Comprehensive Income (Loss) Loss Before Reclassifications — (11 ) (11 ) Amounts Reclassified to Net Earnings 55 (1 ) 54 Tax Expense (22 ) — (22 ) Total Other Comprehensive Income (Loss) 33 (12 ) 21 Balance September 25, 2015, Net of Tax $ (578 ) $ (67 ) $ (645 )

Summarized Consolidating Financ

Summarized Consolidating Financial Data	9 Months Ended
	Sep. 25, 2015
Condensed Financial Information of Parent Company Only Disclosure [Abstract]
Summarized Consolidating Financial Data	Summarized Consolidating Financial Data In 2007, CSXT, a wholly-owned subsidiary of CSX Corporation, sold secured equipment notes maturing in 2023 in a registered public offering. 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. Consolidating Income Statements (Dollars in millions) Third Quarter 2015 CSX Corporation CSX Transportation Eliminations and Other Consolidated Revenue $ — $ 2,920 $ 19 $ 2,939 Expense (154 ) 2,182 (22 ) 2,006 Operating Income 154 738 41 933 Equity in Earnings of Subsidiaries 496 — (496 ) — Interest (Expense) / Benefit (134 ) (8 ) 6 (136 ) Other Income / (Expense) - Net (1 ) 5 (2 ) 2 Earnings Before Income Taxes 515 735 (451 ) 799 Income Tax Benefit / (Expense) (8 ) (273 ) (11 ) (292 ) Net Earnings $ 507 $ 462 $ (462 ) $ 507 Total Comprehensive Earnings $ 518 $ 462 $ (462 ) $ 518 Third Quarter 2014 CSX Corporation CSX Transportation Eliminations and Other Consolidated Revenue $ — $ 3,202 $ 19 $ 3,221 Expense (113 ) 2,368 (10 ) 2,245 Operating Income 113 834 29 976 Equity in Earnings of Subsidiaries 527 1 (528 ) — Interest (Expense) / Benefit (133 ) (11 ) 7 (137 ) Other Income / (Expense) - Net (12 ) (9 ) (5 ) (26 ) Earnings Before Income Taxes 495 815 (497 ) 813 Income Tax (Expense) / Benefit 14 (309 ) (9 ) (304 ) Net Earnings $ 509 $ 506 $ (506 ) $ 509 Total Comprehensive Earnings $ 518 $ 507 $ (507 ) $ 518 Summarized Consolidating Financial Data, continued Consolidating Income Statements (Dollars in millions) Nine Months Ended September 25, 2015 CSX Corporation CSX Transportation Eliminations and Other Consolidated Revenue $ — $ 8,972 $ 58 $ 9,030 Expense (448 ) 6,765 (80 ) 6,237 Operating Income 448 2,207 138 2,793 Equity in Earnings of Subsidiaries 1,482 — (1,482 ) — Interest (Expense) / Benefit (399 ) (24 ) 19 (404 ) Other Income / (Expense) - Net (4 ) 18 (6 ) 8 Earnings Before Income Taxes 1,527 2,201 (1,331 ) 2,397 Income Tax (Expense) / Benefit (25 ) (824 ) (46 ) (895 ) Net Earnings $ 1,502 $ 1,377 $ (1,377 ) $ 1,502 Total Comprehensive Earnings $ 1,523 $ 1,374 $ (1,374 ) $ 1,523 Nine Months Ended September 26, 2014 CSX Corporation CSX Transportation Eliminations and Other Consolidated Revenue $ — $ 9,417 $ 60 $ 9,477 Expense (321 ) 7,121 (35 ) 6,765 Operating Income 321 2,296 95 2,712 Equity in Earnings of Subsidiaries 1,488 1 (1,489 ) — Interest (Expense) / Benefit (389 ) (39 ) 16 (412 ) Other Income / (Expense) - Net (17 ) (13 ) (1 ) (31 ) Earnings Before Income Taxes 1,403 2,245 (1,379 ) 2,269 Income Tax (Expense) / Benefit 33 (831 ) (35 ) (833 ) Net Earnings $ 1,436 $ 1,414 $ (1,414 ) $ 1,436 Total Comprehensive Earnings $ 1,476 $ 1,422 $ (1,422 ) $ 1,476 Summarized Consolidating Financial Data, continued Consolidating Balance Sheet (Dollars in millions) As of September 2015 CSX Corporation CSX Transportation Eliminations and Other Consolidated ASSETS Current Assets Cash and Cash Equivalents $ 311 $ 168 $ 62 $ 541 Short-term Investments 425 — — 425 Accounts Receivable - Net 2 178 823 1,003 Receivable from Affiliates 1,224 2,304 (3,528 ) — Materials and Supplies — 309 — 309 Deferred Income Taxes 10 128 (1 ) 137 Other Current Assets 4 70 13 87 Total Current Assets 1,976 3,157 (2,631 ) 2,502 Properties 1 38,278 2,564 40,843 Accumulated Depreciation (1 ) (9,861 ) (1,344 ) (11,206 ) Properties - Net — 28,417 1,220 29,637 Investments in Conrail — — 793 793 Affiliates and Other Companies (39 ) 650 (28 ) 583 Investments in Consolidated Subsidiaries 22,467 — (22,467 ) — Other Long-term Assets 173 398 (71 ) 500 Total Assets $ 24,577 $ 32,622 $ (23,184 ) $ 34,015 LIABILITIES AND SHAREHOLDERS' EQUITY Current Liabilities Accounts Payable $ 145 $ 667 $ 30 $ 842 Labor and Fringe Benefits Payable 35 374 38 447 Payable to Affiliates 3,184 483 (3,667 ) — Casualty, Environmental and Other Reserves — 130 16 146 Current Maturities of Long-term Debt — 18 — 18 Income and Other Taxes Payable (320 ) 581 21 282 Other Current Liabilities — 185 2 187 Total Current Liabilities 3,044 2,438 (3,560 ) 1,922 Casualty, Environmental and Other Reserves — 216 54 270 Long-term Debt 9,302 786 — 10,088 Deferred Income Taxes (159 ) 8,901 215 8,957 Other Long-term Liabilities 745 493 (120 ) 1,118 Total Liabilities $ 12,932 $ 12,834 $ (3,411 ) $ 22,355 Shareholders' Equity Common Stock, $1 Par Value $ 975 $ 181 $ (181 ) $ 975 Other Capital 120 5,090 (5,090 ) 120 Retained Earnings 11,195 14,532 (14,532 ) 11,195 Accumulated Other Comprehensive Loss (645 ) (34 ) 34 (645 ) Noncontrolling Interest — 19 (4 ) 15 Total Shareholders' Equity $ 11,645 $ 19,788 $ (19,773 ) $ 11,660 Total Liabilities and Shareholders' Equity $ 24,577 $ 32,622 $ (23,184 ) $ 34,015 Summarized Consolidating Financial Data, continued Consolidating Balance Sheet (Dollars in millions) As of December 2014 CSX Corporation CSX Transportation Eliminations and Other Consolidated ASSETS Current Assets Cash and Cash Equivalents $ 510 $ 100 $ 59 $ 669 Short-term Investments 250 — 42 292 Accounts Receivable - Net 2 206 921 1,129 Receivable from Affiliates 1,211 2,418 (3,629 ) — Materials and Supplies — 272 1 273 Deferred Income Taxes 3 139 (1 ) 141 Other Current Assets — 61 7 68 Total Current Assets 1,976 3,196 (2,600 ) 2,572 Properties 1 36,888 2,454 39,343 Accumulated Depreciation (1 ) (9,516 ) (1,242 ) (10,759 ) Properties - Net — 27,372 1,212 28,584 Investments in Conrail — — 779 779 Affiliates and Other Companies (39 ) 644 (28 ) 577 Investment in Consolidated Subsidiaries 21,570 — (21,570 ) — Other Long-term Assets 178 387 (24 ) 541 Total Assets $ 23,685 $ 31,599 $ (22,231 ) $ 33,053 LIABILITIES AND SHAREHOLDERS' EQUITY Current Liabilities Accounts Payable $ 106 $ 707 $ 32 $ 845 Labor and Fringe Benefits Payable 38 511 64 613 Payable to Affiliates 3,053 514 (3,567 ) — Casualty, Environmental and Other Reserves — 126 16 142 Current Maturities of Long-term Debt 200 29 (1 ) 228 Income and Other Taxes Payable (150 ) 293 20 163 Other Current Liabilities — 111 5 116 Total Current Liabilities 3,247 2,291 (3,431 ) 2,107 Casualty, Environmental and Other Reserves — 213 63 276 Long-term Debt 8,705 809 — 9,514 Deferred Income Taxes (172 ) 8,827 203 8,858 Other Long-term Liabilities 753 487 (118 ) 1,122 Total Liabilities $ 12,533 $ 12,627 $ (3,283 ) $ 21,877 Shareholders' Equity Common Stock, $1 Par Value $ 992 $ 181 $ (181 ) $ 992 Other Capital 92 5,077 (5,077 ) 92 Retained Earnings 10,734 13,717 (13,717 ) 10,734 Accumulated Other Comprehensive Loss (666 ) (31 ) 31 (666 ) Noncontrolling Minority Interest — 28 (4 ) 24 Total Shareholders' Equity $ 11,152 $ 18,972 $ (18,948 ) $ 11,176 Total Liabilities and Shareholders' Equity $ 23,685 $ 31,599 $ (22,231 ) $ 33,053 Summarized Consolidating Financial Data, continued Consolidating Cash Flow Statements (Dollars in millions) Nine months ended September 25, 2015 CSX Corporation CSX Transportation Eliminations and Other Consolidated Operating Activities Net Cash Provided by (Used in) Operating Activities $ 637 $ 2,313 $ (438 ) $ 2,512 Investing Activities Property Additions — (1,794 ) (115 ) (1,909 ) Purchases of Short-term Investments (1,170 ) — — (1,170 ) Proceeds from Sales of Short-term Investments 995 — 45 1,040 Proceeds from Property Dispositions — 46 — 46 Other Investing Activities (11 ) 93 (40 ) 42 Net Cash Provided by (Used in) Investing Activities (186 ) (1,655 ) (110 ) (1,951 ) Financing Activities Long-term Debt Issued 600 — — 600 Long-term Debt Repaid (200 ) (28 ) — (228 ) Dividends Paid (512 ) (563 ) 563 (512 ) Shares Repurchased (546 ) — — (546 ) Other Financing Activities 8 1 (12 ) (3 ) Net Cash Provided by (Used in) Financing Activities (650 ) (590 ) 551 (689 ) Net Increase (Decrease) in Cash and Cash Equivalents (199 ) 68 3 (128 ) Cash and Cash Equivalents at Beginning of Period 510 100 59 669 Cash and Cash Equivalents at End of Period $ 311 $ 168 $ 62 $ 541 NOTE 11. Summarized Consolidating Financial Data, continued Consolidating Cash Flow Statements (Dollars in millions) Nine months ended September 26, 2014 CSX Corporation CSX Transportation Eliminations and Other Consolidated Operating Activities Net Cash Provided by (Used in) Operating Activities $ 397 $ 2,301 $ (396 ) $ 2,302 Investing Activities Property Additions — (1,398 ) (159 ) (1,557 ) Purchases of Short-term Investments (1,170 ) — — (1,170 ) Proceeds from Sales of Short-term Investments 1,077 — 25 1,102 Proceeds from Property Dispositions — 57 — 57 Other Investing Activities — (147 ) 95 (52 ) Net Cash Provided by (Used in) Investing Activities (93 ) (1,488 ) (39 ) (1,620 ) Financing Activities Long-term Debt Issued 1,000 — — 1,000 Long-term Debt Repaid (600 ) (332 ) — (932 ) Dividends Paid (470 ) (428 ) 428 (470 ) Shares Repurchased (388 ) — — (388 ) Other Financing Activities 10 (16 ) 1 (5 ) Net Cash Provided by (Used in) Financing Activities (448 ) (776 ) 429 (795 ) Net Increase (Decrease) in Cash and Cash Equivalents (144 ) 37 (6 ) (113 ) Cash and Cash Equivalents at Beginning of Period 439 91 62 592 Cash and Cash Equivalents at End of Period $ 295 $ 128 $ 56 $ 479

Nature of Operations and Sign18

Nature of Operations and Significant Accounting Policies (Policies)	9 Months Ended
	Sep. 25, 2015
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Basis of Presentation	In the opinion of management, the accompanying consolidated financial statements contain all normal, recurring adjustments necessary to fairly present the following: • Consolidated income statements for the quarters and nine months ended September 25, 2015 and September 26, 2014 ; • Consolidated comprehensive income statements for the quarters and nine months ended September 25, 2015 and September 26, 2014 ; • Consolidated balance sheets at September 25, 2015 and December 26, 2014 ; and • Consolidated cash flow statements for the nine months ended September 25, 2015 and September 26, 2014 . Pursuant to the rules and regulations of the Securities and Exchange Commission (“SEC”), certain information and disclosures normally included in the notes to the annual financial statements prepared in accordance with U.S. generally accepted accounting principles (“GAAP”) have been omitted from these interim financial statements. CSX suggests that these financial statements be read in conjunction with the audited financial statements and the notes included in CSX's most recent annual report on Form 10-K and any subsequently filed current reports on Form 8-K.
Fiscal Year	CSX follows a 52 /53 week fiscal reporting calendar with the last day of each reporting period ending on a Friday: • The third fiscal quarters of 2015 and 2014 consisted of 13 weeks ending on September 25, 2015 and September 26, 2014 , respectively. • Fiscal year 2015 and 2014 will each consist of 52 weeks ending on December 25, 2015 and December 26, 2014 , respectively. Except as otherwise specified, references to “ third quarter(s)” or “ nine months” indicate CSX's fiscal periods ending September 25, 2015 and September 26, 2014 , and references to "year-end" indicate the fiscal year ended December 26, 2014 .
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.
New Accounting Pronouncements	On April 7, 2015, the Financial Accounting Standards Board ("FASB") issued Accounting Standards Update, Interest - Imputation of Interest , which changes the financial statement presentation of debt issuance costs to be a direct reduction to long-term debt, rather than presented as a long-term asset. The amortization of debt issuance costs will continue to be included in interest expense. This standard is effective for annual reporting periods beginning after December 15, 2015 and will not have a material effect on the Company's financial condition, results of operations or liquidity. On July 9, 2015, the FASB approved a one-year deferral of the effective date of the Accounting Standards Update, Revenue from Contracts with Customers . This standard will now become effective for CSX beginning with the first quarter 2018 and can be adopted either retrospectively to each prior reporting period presented or as a cumulative effect adjustment as of the date of adoption. The Company is currently evaluating the impact of adopting this new guidance on the consolidated financial statements.

Earnings Per Share (Tables)

Earnings Per Share (Tables)	9 Months Ended
	Sep. 25, 2015
Earnings Per Share [Abstract]
Computation of Basic Earnings Per Share, Assuming Dilution	The following table sets forth the computation of basic earnings per share and earnings per share, assuming dilution: Third Quarters Nine Months 2015 2014 2015 2014 Numerator (Dollars in millions) : Net Earnings $ 507 $ 509 $ 1,502 $ 1,436 Dividend Equivalents on Restricted Stock — — (1 ) (1 ) Net Earnings, Attributable to Common Shareholders $ 507 $ 509 $ 1,501 $ 1,435 Denominator (Units in millions) : Average Common Shares Outstanding 981 999 986 1,003 Other Potentially Dilutive Common Shares 1 — 1 1 Average Common Shares Outstanding, Assuming Dilution 982 999 987 1,004 Net Earnings Per Share, Basic $ 0.52 $ 0.51 $ 1.52 $ 1.43 Net Earnings Per Share, Assuming Dilution $ 0.52 $ 0.51 $ 1.52 $ 1.43

Share-Based Compensation (Table

Share-Based Compensation (Tables)	9 Months Ended
	Sep. 25, 2015
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]
Share-Based Compensation and Related Income Tax Benefit	Total pre-tax expense associated with all share-based compensation and the related income tax benefit are as follows: Third Quarters Nine Months (Dollars in millions) 2015 2014 2015 2014 Share-Based Compensation Expense $ 2 $ 9 $ 20 $ 20 Income Tax Benefit 1 4 8 8

Casualty, Environmental and O21

Casualty, Environmental and Other Reserves (Tables)	9 Months Ended
	Sep. 25, 2015
Casualty, Environmental and Other Reserves [Abstract]
Schedule of Casualty, Environmental and Other Reserves	Casualty, environmental and other reserves are considered critical accounting estimates due to the need for significant management judgment. They are provided for in the consolidated balance sheets as follows: September 25, December 26, (Dollars in millions) Current Long-term Total Current Long-term Total Casualty: Personal Injury $ 58 $ 145 $ 203 $ 68 $ 123 $ 191 Occupational 3 14 17 3 15 18 Asbestos 5 48 53 5 51 56 Total Casualty 66 207 273 76 189 265 Environmental 58 30 88 48 46 94 Other 22 33 55 18 41 59 Total $ 146 $ 270 $ 416 $ 142 $ 276 $ 418

Employee Benefit Plans (Tables)

Employee Benefit Plans (Tables)	9 Months Ended
	Sep. 25, 2015
Compensation and Retirement Disclosure [Abstract]
Components of Expense/(Income) Related to 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 (Dollars in millions) Third Quarters Nine Months 2015 2014 2015 2014 Service Cost $ 12 $ 11 $ 34 $ 33 Interest Cost 29 30 87 92 Expected Return on Plan Assets (41 ) (41 ) (122 ) (124 ) Amortization of Net Loss 17 15 52 43 Net Periodic Benefit Cost 17 15 51 44 Special Termination Employee Benefits (a) — — 7 — Total Expense $ 17 $ 15 $ 58 $ 44 Other Post-retirement Benefits (Dollars in millions) Third Quarters Nine Months 2015 2014 2015 2014 Service Cost $ 2 $ 1 $ 3 $ 2 Interest Cost 3 4 10 11 Amortization of Net Loss 1 1 3 4 Amortization of Prior Service Costs (1 ) — (1 ) (1 ) Total Expense $ 5 $ 6 $ 15 $ 16 (a) These charges result from a management workforce reduction program that was initiated in 2014 and was completed during the first quarter 2015.

Debt and Credit Agreements (Tab

Debt and Credit Agreements (Tables)	9 Months Ended
	Sep. 25, 2015
Debt Disclosure [Abstract]
Activity Related to Long-Term Debt	Total activity related to long-term debt as of the end of third quarter 2015 is shown in the table below. For fair value information related to the Company's long-term debt, see Note 9, Fair Value Measurements. (Dollars in millions) Current Portion Long-term Portion Total Long-term debt as of December 2014 $ 228 $ 9,514 $ 9,742 2015 activity: Long-term debt issued — 600 600 Long-term debt repaid (228 ) — (228 ) Reclassifications 18 (18 ) — Discount, premium and other activity — (8 ) (8 ) Long-term debt as of third quarter 2015 $ 18 $ 10,088 $ 10,106

Fair Value Measurements (Tables

Fair Value Measurements (Tables)	9 Months Ended
	Sep. 25, 2015
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. The amortized cost basis of these investments was $532 million and $453 million as of September 25, 2015 and December 26, 2014 , respectively. September 25, December 26, (Dollars in Millions) Level 2 Level 3 Total Level 2 Level 3 Total Certificates of Deposit and Commercial Paper $ 425 $ — $ 425 $ 250 $ — $ 250 Corporate Bonds 70 — 70 141 — 141 Government Securities 33 — 33 51 — 51 Auction Rate Securities — 4 4 — 11 11 Total investments at fair value $ 528 $ 4 $ 532 $ 442 $ 11 $ 453
Schedule of Investment Maturities	These investments have the following maturities: (Dollars in millions) September 25, December 26, Less than 1 year $ 425 $ 292 1 - 2 years 6 45 2 - 5 years 42 100 Greater than 5 years 59 16 Total $ 532 $ 453
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) September 25, December 26, 2014 Long-term Debt (Including Current Maturities): Fair Value $ 10,770 $ 11,042 Carrying Value 10,106 9,742

Other Comprehensive Income _ 25

Other Comprehensive Income / (Loss) (Tables)	9 Months Ended
	Sep. 25, 2015
Equity [Abstract]
Changes in AOCI balance by Component	Changes in the AOCI balance by component are shown in the table below. Amounts reclassified in pension and other post-employment benefits to net earnings relate to the amortization of actuarial losses and are included in labor and fringe on the consolidated income statements. See Note 6. Employee Benefit Plans for further information. Other primarily represents CSX's share of AOCI of equity method investees. Amounts reclassified in other to net earnings are included in materials, supplies and other on the consolidated income statements. Pension and Other Post-Employment Benefits Other Accumulated Other Comprehensive Income (Loss) (Dollars in millions) Balance December 26, 2014, Net of Tax $ (611 ) $ (55 ) $ (666 ) Other Comprehensive Income (Loss) Loss Before Reclassifications — (11 ) (11 ) Amounts Reclassified to Net Earnings 55 (1 ) 54 Tax Expense (22 ) — (22 ) Total Other Comprehensive Income (Loss) 33 (12 ) 21 Balance September 25, 2015, Net of Tax $ (578 ) $ (67 ) $ (645 )

Summarized Consolidating Fina26

Summarized Consolidating Financial Data (Tables)	9 Months Ended
	Sep. 25, 2015
Condensed Financial Information of Parent Company Only Disclosure [Abstract]
Consolidating Income Statements	Consolidating Income Statements (Dollars in millions) Third Quarter 2015 CSX Corporation CSX Transportation Eliminations and Other Consolidated Revenue $ — $ 2,920 $ 19 $ 2,939 Expense (154 ) 2,182 (22 ) 2,006 Operating Income 154 738 41 933 Equity in Earnings of Subsidiaries 496 — (496 ) — Interest (Expense) / Benefit (134 ) (8 ) 6 (136 ) Other Income / (Expense) - Net (1 ) 5 (2 ) 2 Earnings Before Income Taxes 515 735 (451 ) 799 Income Tax Benefit / (Expense) (8 ) (273 ) (11 ) (292 ) Net Earnings $ 507 $ 462 $ (462 ) $ 507 Total Comprehensive Earnings $ 518 $ 462 $ (462 ) $ 518 Third Quarter 2014 CSX Corporation CSX Transportation Eliminations and Other Consolidated Revenue $ — $ 3,202 $ 19 $ 3,221 Expense (113 ) 2,368 (10 ) 2,245 Operating Income 113 834 29 976 Equity in Earnings of Subsidiaries 527 1 (528 ) — Interest (Expense) / Benefit (133 ) (11 ) 7 (137 ) Other Income / (Expense) - Net (12 ) (9 ) (5 ) (26 ) Earnings Before Income Taxes 495 815 (497 ) 813 Income Tax (Expense) / Benefit 14 (309 ) (9 ) (304 ) Net Earnings $ 509 $ 506 $ (506 ) $ 509 Total Comprehensive Earnings $ 518 $ 507 $ (507 ) $ 518 Consolidating Income Statements (Dollars in millions) Nine Months Ended September 25, 2015 CSX Corporation CSX Transportation Eliminations and Other Consolidated Revenue $ — $ 8,972 $ 58 $ 9,030 Expense (448 ) 6,765 (80 ) 6,237 Operating Income 448 2,207 138 2,793 Equity in Earnings of Subsidiaries 1,482 — (1,482 ) — Interest (Expense) / Benefit (399 ) (24 ) 19 (404 ) Other Income / (Expense) - Net (4 ) 18 (6 ) 8 Earnings Before Income Taxes 1,527 2,201 (1,331 ) 2,397 Income Tax (Expense) / Benefit (25 ) (824 ) (46 ) (895 ) Net Earnings $ 1,502 $ 1,377 $ (1,377 ) $ 1,502 Total Comprehensive Earnings $ 1,523 $ 1,374 $ (1,374 ) $ 1,523 Nine Months Ended September 26, 2014 CSX Corporation CSX Transportation Eliminations and Other Consolidated Revenue $ — $ 9,417 $ 60 $ 9,477 Expense (321 ) 7,121 (35 ) 6,765 Operating Income 321 2,296 95 2,712 Equity in Earnings of Subsidiaries 1,488 1 (1,489 ) — Interest (Expense) / Benefit (389 ) (39 ) 16 (412 ) Other Income / (Expense) - Net (17 ) (13 ) (1 ) (31 ) Earnings Before Income Taxes 1,403 2,245 (1,379 ) 2,269 Income Tax (Expense) / Benefit 33 (831 ) (35 ) (833 ) Net Earnings $ 1,436 $ 1,414 $ (1,414 ) $ 1,436 Total Comprehensive Earnings $ 1,476 $ 1,422 $ (1,422 ) $ 1,476
Consolidating Balance Sheet	Consolidating Balance Sheet (Dollars in millions) As of September 2015 CSX Corporation CSX Transportation Eliminations and Other Consolidated ASSETS Current Assets Cash and Cash Equivalents $ 311 $ 168 $ 62 $ 541 Short-term Investments 425 — — 425 Accounts Receivable - Net 2 178 823 1,003 Receivable from Affiliates 1,224 2,304 (3,528 ) — Materials and Supplies — 309 — 309 Deferred Income Taxes 10 128 (1 ) 137 Other Current Assets 4 70 13 87 Total Current Assets 1,976 3,157 (2,631 ) 2,502 Properties 1 38,278 2,564 40,843 Accumulated Depreciation (1 ) (9,861 ) (1,344 ) (11,206 ) Properties - Net — 28,417 1,220 29,637 Investments in Conrail — — 793 793 Affiliates and Other Companies (39 ) 650 (28 ) 583 Investments in Consolidated Subsidiaries 22,467 — (22,467 ) — Other Long-term Assets 173 398 (71 ) 500 Total Assets $ 24,577 $ 32,622 $ (23,184 ) $ 34,015 LIABILITIES AND SHAREHOLDERS' EQUITY Current Liabilities Accounts Payable $ 145 $ 667 $ 30 $ 842 Labor and Fringe Benefits Payable 35 374 38 447 Payable to Affiliates 3,184 483 (3,667 ) — Casualty, Environmental and Other Reserves — 130 16 146 Current Maturities of Long-term Debt — 18 — 18 Income and Other Taxes Payable (320 ) 581 21 282 Other Current Liabilities — 185 2 187 Total Current Liabilities 3,044 2,438 (3,560 ) 1,922 Casualty, Environmental and Other Reserves — 216 54 270 Long-term Debt 9,302 786 — 10,088 Deferred Income Taxes (159 ) 8,901 215 8,957 Other Long-term Liabilities 745 493 (120 ) 1,118 Total Liabilities $ 12,932 $ 12,834 $ (3,411 ) $ 22,355 Shareholders' Equity Common Stock, $1 Par Value $ 975 $ 181 $ (181 ) $ 975 Other Capital 120 5,090 (5,090 ) 120 Retained Earnings 11,195 14,532 (14,532 ) 11,195 Accumulated Other Comprehensive Loss (645 ) (34 ) 34 (645 ) Noncontrolling Interest — 19 (4 ) 15 Total Shareholders' Equity $ 11,645 $ 19,788 $ (19,773 ) $ 11,660 Total Liabilities and Shareholders' Equity $ 24,577 $ 32,622 $ (23,184 ) $ 34,015 Consolidating Balance Sheet (Dollars in millions) As of December 2014 CSX Corporation CSX Transportation Eliminations and Other Consolidated ASSETS Current Assets Cash and Cash Equivalents $ 510 $ 100 $ 59 $ 669 Short-term Investments 250 — 42 292 Accounts Receivable - Net 2 206 921 1,129 Receivable from Affiliates 1,211 2,418 (3,629 ) — Materials and Supplies — 272 1 273 Deferred Income Taxes 3 139 (1 ) 141 Other Current Assets — 61 7 68 Total Current Assets 1,976 3,196 (2,600 ) 2,572 Properties 1 36,888 2,454 39,343 Accumulated Depreciation (1 ) (9,516 ) (1,242 ) (10,759 ) Properties - Net — 27,372 1,212 28,584 Investments in Conrail — — 779 779 Affiliates and Other Companies (39 ) 644 (28 ) 577 Investment in Consolidated Subsidiaries 21,570 — (21,570 ) — Other Long-term Assets 178 387 (24 ) 541 Total Assets $ 23,685 $ 31,599 $ (22,231 ) $ 33,053 LIABILITIES AND SHAREHOLDERS' EQUITY Current Liabilities Accounts Payable $ 106 $ 707 $ 32 $ 845 Labor and Fringe Benefits Payable 38 511 64 613 Payable to Affiliates 3,053 514 (3,567 ) — Casualty, Environmental and Other Reserves — 126 16 142 Current Maturities of Long-term Debt 200 29 (1 ) 228 Income and Other Taxes Payable (150 ) 293 20 163 Other Current Liabilities — 111 5 116 Total Current Liabilities 3,247 2,291 (3,431 ) 2,107 Casualty, Environmental and Other Reserves — 213 63 276 Long-term Debt 8,705 809 — 9,514 Deferred Income Taxes (172 ) 8,827 203 8,858 Other Long-term Liabilities 753 487 (118 ) 1,122 Total Liabilities $ 12,533 $ 12,627 $ (3,283 ) $ 21,877 Shareholders' Equity Common Stock, $1 Par Value $ 992 $ 181 $ (181 ) $ 992 Other Capital 92 5,077 (5,077 ) 92 Retained Earnings 10,734 13,717 (13,717 ) 10,734 Accumulated Other Comprehensive Loss (666 ) (31 ) 31 (666 ) Noncontrolling Minority Interest — 28 (4 ) 24 Total Shareholders' Equity $ 11,152 $ 18,972 $ (18,948 ) $ 11,176 Total Liabilities and Shareholders' Equity $ 23,685 $ 31,599 $ (22,231 ) $ 33,053
Consolidating Cash Flow Statements	Consolidating Cash Flow Statements (Dollars in millions) Nine months ended September 25, 2015 CSX Corporation CSX Transportation Eliminations and Other Consolidated Operating Activities Net Cash Provided by (Used in) Operating Activities $ 637 $ 2,313 $ (438 ) $ 2,512 Investing Activities Property Additions — (1,794 ) (115 ) (1,909 ) Purchases of Short-term Investments (1,170 ) — — (1,170 ) Proceeds from Sales of Short-term Investments 995 — 45 1,040 Proceeds from Property Dispositions — 46 — 46 Other Investing Activities (11 ) 93 (40 ) 42 Net Cash Provided by (Used in) Investing Activities (186 ) (1,655 ) (110 ) (1,951 ) Financing Activities Long-term Debt Issued 600 — — 600 Long-term Debt Repaid (200 ) (28 ) — (228 ) Dividends Paid (512 ) (563 ) 563 (512 ) Shares Repurchased (546 ) — — (546 ) Other Financing Activities 8 1 (12 ) (3 ) Net Cash Provided by (Used in) Financing Activities (650 ) (590 ) 551 (689 ) Net Increase (Decrease) in Cash and Cash Equivalents (199 ) 68 3 (128 ) Cash and Cash Equivalents at Beginning of Period 510 100 59 669 Cash and Cash Equivalents at End of Period $ 311 $ 168 $ 62 $ 541 NOTE 11. Summarized Consolidating Financial Data, continued Consolidating Cash Flow Statements (Dollars in millions) Nine months ended September 26, 2014 CSX Corporation CSX Transportation Eliminations and Other Consolidated Operating Activities Net Cash Provided by (Used in) Operating Activities $ 397 $ 2,301 $ (396 ) $ 2,302 Investing Activities Property Additions — (1,398 ) (159 ) (1,557 ) Purchases of Short-term Investments (1,170 ) — — (1,170 ) Proceeds from Sales of Short-term Investments 1,077 — 25 1,102 Proceeds from Property Dispositions — 57 — 57 Other Investing Activities — (147 ) 95 (52 ) Net Cash Provided by (Used in) Investing Activities (93 ) (1,488 ) (39 ) (1,620 ) Financing Activities Long-term Debt Issued 1,000 — — 1,000 Long-term Debt Repaid (600 ) (332 ) — (932 ) Dividends Paid (470 ) (428 ) 428 (470 ) Shares Repurchased (388 ) — — (388 ) Other Financing Activities 10 (16 ) 1 (5 ) Net Cash Provided by (Used in) Financing Activities (448 ) (776 ) 429 (795 ) Net Increase (Decrease) in Cash and Cash Equivalents (144 ) 37 (6 ) (113 ) Cash and Cash Equivalents at Beginning of Period 439 91 62 592 Cash and Cash Equivalents at End of Period $ 295 $ 128 $ 56 $ 479

Nature of Operations and Sign27

Nature of Operations and Significant Accounting Policies - Narrative (Details) mi in Thousands, $ in Millions	3 Months Ended		9 Months Ended
	Sep. 25, 2015USD ($)statemi	Sep. 26, 2014	Sep. 25, 2015USD ($)statemi	Sep. 26, 2014	Dec. 26, 2014USD ($)
Background
Total number of rail route miles	21		21
Number of states rail network serves | state	23		23
Fiscal Year
Number of days in fiscal year			364 days	364 days
Number of days in fiscal quarter	91 days	91 days
Number of days in fiscal quarter YTD			273 days	273 days
Allowance for Doubtful Accounts
Allowance for doubtful accounts | $	$ 39		$ 39		$ 41

Nature of Operations and Sign28

Nature of Operations and Significant Accounting Policies - Share Repurchases (Details) - USD ($) shares in Millions	3 Months Ended		9 Months Ended
	Sep. 25, 2015	Sep. 26, 2014	Sep. 25, 2015	Sep. 26, 2014	Apr. 30, 2015
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Share repurchase program					$ 2,000,000,000
Shares repurchased	$ 262,000,000	$ 131,000,000	$ 546,000,000	$ 388,000,000
Shares repurchased during the period (in shares)	9	4	17	13

Earnings Per Share (Details)

Earnings Per Share (Details) - USD ($) $ / shares in Units, shares in Millions, $ in Millions	3 Months Ended		9 Months Ended
	Sep. 25, 2015	Sep. 26, 2014	Sep. 25, 2015	Sep. 26, 2014
Numerator:
Net Earnings	$ 507	$ 509	$ 1,502	$ 1,436
Dividend Equivalents on Restricted Stock	0	0	(1)	(1)
Net Earnings, Attributable to Common Shareholders	$ 507	$ 509	$ 1,501	$ 1,435
Denominator:
Average Common Shares Outstanding (in shares)	981	999	986	1,003
Other Potentially Dilutive Common Shares (in shares)	1	0	1	1
Average Common Shares Outstanding, Assuming Dilution (in shares)	982	999	987	1,004
Net Earnings Per Share, Basic (in dollars per share)	$ 0.52	$ 0.51	$ 1.52	$ 1.43
Net Earnings Per Share, Assuming Dilution (in dollars per share)	$ 0.52	$ 0.51	$ 1.52	$ 1.43

Share-Based Compensation (Detai

Share-Based Compensation (Details) - USD ($) $ in Millions	Feb. 11, 2015	Feb. 28, 2015	Sep. 25, 2015	Sep. 26, 2014	Sep. 25, 2015	Sep. 26, 2014
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-Based Compensation Expense			$ 2	$ 9	$ 20	$ 20
Income Tax Benefit			$ 1	$ 4	$ 8	$ 8
2015 - 2017 LTIP
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Percentage of payout subject to downward adjustment (up to)					30.00%
2015 - 2017 LTIP | Minimum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Payout range for participants					0.00%
2015 - 2017 LTIP | Maximum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Payout range for participants					200.00%
2015 - 2017 LTIP | Performance Units
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Awards granted		1,000,000
Percentage of grants with performance vesting, operating ratio	50.00%
Percentage of grants with performance vesting, return on assets	50.00%
Performance unit equivalent of CSX common stock, in shares	1
2015 - 2017 LTIP | Restricted Stock Units (RSUs)
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Awards granted		312,000
Award vesting period	3 years

Casualty, Environmental and O31

Casualty, Environmental and Other Reserves - Schedule of Casualty, Environmental and Other Reserves (Details) - USD ($) $ in Millions	Sep. 25, 2015	Dec. 26, 2014
Loss Contingencies [Line Items]
Current	$ 146	$ 142
Long-term	270	276
Total	416	418
Total Casualty
Loss Contingencies [Line Items]
Current	66	76
Long-term	207	189
Total	273	265
Personal Injury
Loss Contingencies [Line Items]
Current	58	68
Long-term	145	123
Total	203	191
Occupational
Loss Contingencies [Line Items]
Current	3	3
Long-term	14	15
Total	17	18
Asbestos
Loss Contingencies [Line Items]
Current	5	5
Long-term	48	51
Total	53	56
Environmental
Loss Contingencies [Line Items]
Current	58	48
Long-term	30	46
Total	88	94
Other
Loss Contingencies [Line Items]
Current	22	18
Long-term	33	41
Total	$ 55	$ 59

Casualty, Environmental and O32

Casualty, Environmental and Other Reserves - Narrative (Details)	9 Months Ended
	Sep. 25, 2015USD ($)claimsite	Dec. 26, 2014USD ($)
All Contingencies Reserves [Line Items]
Total reserves	$ 416,000,000	$ 418,000,000
Casualty
All Contingencies Reserves [Line Items]
Total reserves	273,000,000	265,000,000
Self-insured retention amount, per occurrence	$ 50,000,000
Number of individual claims expected to exceed self insured retention amount | claim	0
Environmental
All Contingencies Reserves [Line Items]
Total reserves	$ 88,000,000	94,000,000
Environmental impaired sites | site	253
Other
All Contingencies Reserves [Line Items]
Total reserves	$ 55,000,000	$ 59,000,000

Commitments and Contingencies (

Commitments and Contingencies (Details) $ in Millions	1 Months Ended		9 Months Ended
	Apr. 30, 2014mi	May. 31, 2007entity	Sep. 25, 2015USD ($)partymi
Loss Contingencies [Line Items]
Casualty and non catastrophic property deductible			$ 25
Casualty and catastrophic property deductible			$ 50
Environmental
Loss Contingencies [Line Items]
Number of miles pertaining to Passaic River tidal reach required to be studied by EPA | mi			17
Number of parties involved in remediation | party			60
Number of miles subject to remediation | mi	8
Pending Litigation
Loss Contingencies [Line Items]
Range of possible loss for certain legal proceedings, minimum			$ 3
Range of possible loss for certain legal proceedings, maximum			$ 52
Pending Litigation | Fuel Surcharge Antitrust Litigation
Loss Contingencies [Line Items]
Class action lawsuits filed against U.S.-based Class I railroads, excluding CSXT (number of entities) | entity		3

Employee Benefit Plans (Details

Employee Benefit Plans (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 25, 2015	Sep. 26, 2014	Sep. 25, 2015	Sep. 26, 2014
Pension Benefits
Components of expense/ (income) related to net benefit expense:
Service Cost	$ 12	$ 11	$ 34	$ 33
Interest Cost	29	30	87	92
Expected Return on Plan Assets	(41)	(41)	(122)	(124)
Amortization of Net Loss	17	15	52	43
Net Periodic Benefit Cost	17	15	51	44
Special Termination Employee Benefits	0	0	7	0
Total Expense	17	15	58	44
Other Post-retirement Benefits
Components of expense/ (income) related to net benefit expense:
Service Cost	2	1	3	2
Interest Cost	3	4	10	11
Amortization of Net Loss	1	1	3	4
Amortization of Prior Service Costs	(1)	0	(1)	(1)
Total Expense	$ 5	$ 6	$ 15	$ 16

Debt and Credit Agreements - Ac

Debt and Credit Agreements - Activity Related to Long-Term Debt (Details) - USD ($) $ in Millions	9 Months Ended
	Sep. 25, 2015	Sep. 26, 2014
Movement, Debt Instruments [Roll Forward]
Beginning balance, current portion	$ 228
Beginning balance, long-term portion	9,514
Beginning balance, total	9,742
Long-term debt issued	600	$ 1,000
Long-term debt repaid	(228)	$ (932)
Reclassifications	0
Discount, premium and other activity	(8)
Ending balance, current portion	18
Ending balance, long-term portion	10,088
Ending balance, total	10,106
Current Portion
Movement, Debt Instruments [Roll Forward]
Beginning balance, current portion	228
Long-term debt issued	0
Long-term debt repaid	(228)
Reclassifications	18
Discount, premium and other activity	0
Ending balance, current portion	18
Long-term Portion
Movement, Debt Instruments [Roll Forward]
Beginning balance, long-term portion	9,514
Long-term debt issued	600
Long-term debt repaid	0
Reclassifications	(18)
Discount, premium and other activity	(8)
Ending balance, long-term portion	$ 10,088

Debt and Credit Agreements - Na

Debt and Credit Agreements - Narrative (Details) - USD ($)	9 Months Ended
	Sep. 25, 2015	Oct. 14, 2015	May. 21, 2015	Apr. 21, 2015
Credit Facility
Line of Credit Facility
Borrowing capacity			$ 1,000,000,000
Facility expiration date	May 21, 2020
Receivables Securitization Facility
Line of Credit Facility
Borrowing capacity	$ 250,000,000
Facility expiration date	Jun. 20, 2017
Facility expiration period	3 years
Unsecured Debt | 3.95% Unsecured Notes Due 2050
Line of Credit Facility
Debt issued				$ 600,000,000
Stated interest rate percentage				3.95%
Subsequent Event | Credit Facility
Line of Credit Facility
Amount outstanding		$ 0
Subsequent Event | Receivables Securitization Facility
Line of Credit Facility
Amount outstanding		$ 0

Fair Value Measurements - Sched

Fair Value Measurements - Schedule of Fair Value of Investment Assets (Details) - USD ($) $ in Millions	Sep. 25, 2015	Dec. 26, 2014
Carrying Value
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Amortized cost basis of investments	$ 532	$ 453
Fair Value
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Investments at fair value	532	453
Certificates of Deposit and Commercial Paper | Fair Value
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Investments at fair value	425	250
Corporate Bonds | Fair Value
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Investments at fair value	70	141
Government Securities | Fair Value
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Investments at fair value	33	51
Auction Rate Securities | Fair Value
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Investments at fair value	4	11
Level 2 | Fair Value
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Investments at fair value	528	442
Level 2 | Certificates of Deposit and Commercial Paper | Fair Value
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Investments at fair value	425	250
Level 2 | Corporate Bonds | Fair Value
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Investments at fair value	70	141
Level 2 | Government Securities | Fair Value
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Investments at fair value	33	51
Level 2 | Auction Rate Securities | Fair Value
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Investments at fair value	0	0
Level 3 | Fair Value
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Investments at fair value	4	11
Level 3 | Certificates of Deposit and Commercial Paper | Fair Value
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Investments at fair value	0	0
Level 3 | Corporate Bonds | Fair Value
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Investments at fair value	0	0
Level 3 | Government Securities | Fair Value
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Investments at fair value	0	0
Level 3 | Auction Rate Securities | Fair Value
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Investments at fair value	$ 4	$ 11

Fair Value Measurements - Sch38

Fair Value Measurements - Schedule of Investment Maturities (Details) - Fair Value - USD ($) $ in Millions	Sep. 25, 2015	Dec. 26, 2014
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Less than 1 year	$ 425	$ 292
1 - 2 years	6	45
2 - 5 years	42	100
Greater than 5 years	59	16
Total	$ 532	$ 453

Fair Value Measurements - Sch39

Fair Value Measurements - Schedule of Fair Value and Carrying Value of Long-Term Debt (Details) - Level 2 - USD ($) $ in Millions	Sep. 25, 2015	Dec. 26, 2014
Fair Value
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Long-term Debt (Including Current Maturities)	$ 10,770	$ 11,042
Carrying Value
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Long-term Debt (Including Current Maturities)	$ 10,106	$ 9,742

Other Comprehensive Income _ 40

Other Comprehensive Income / (Loss) (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 25, 2015	Sep. 26, 2014	Sep. 25, 2015	Sep. 26, 2014
Equity [Abstract]
Total comprehensive earnings, net of tax	$ 518	$ 518	$ 1,523	$ 1,476
Pension and Other Post-Employment Benefits
Other Comprehensive Income (Loss)
Balance December 26, 2014, Net of Tax			(611)
Loss Before Reclassifications			0
Amounts Reclassified to Net Earnings			55
Tax Expense			(22)
Total Other Comprehensive Income (Loss)			33
Balance September 25, 2015, Net of Tax	(578)		(578)
Other
Other Comprehensive Income (Loss)
Balance December 26, 2014, Net of Tax			(55)
Loss Before Reclassifications			(11)
Amounts Reclassified to Net Earnings			(1)
Tax Expense			0
Total Other Comprehensive Income (Loss)			(12)
Balance September 25, 2015, Net of Tax	(67)		(67)
Accumulated Other Comprehensive Income (Loss)
Other Comprehensive Income (Loss)
Balance December 26, 2014, Net of Tax			(666)
Loss Before Reclassifications			(11)
Amounts Reclassified to Net Earnings			54
Tax Expense			(22)
Total Other Comprehensive Income (Loss)			21
Balance September 25, 2015, Net of Tax	$ (645)		$ (645)

Summarized Consolidating Fina41

Summarized Consolidating Financial Data - Consolidating Income Statements (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 25, 2015	Sep. 26, 2014	Sep. 25, 2015	Sep. 26, 2014
Consolidated Income Statement
Revenue	$ 2,939	$ 3,221	$ 9,030	$ 9,477
Operating Expenses	2,006	2,245	6,237	6,765
Operating Income	933	976	2,793	2,712
Equity in Earnings of Subsidiaries	0	0	0	0
Interest (Expense) / Benefit	(136)	(137)	(404)	(412)
Nonoperating Income (Expense)	2	(26)	8	(31)
Earnings Before Income Taxes	799	813	2,397	2,269
Income Tax Benefit / (Expense)	(292)	(304)	(895)	(833)
Net Earnings	507	509	1,502	1,436
Total Comprehensive Earnings	518	518	1,523	1,476
CSX Corporation
Consolidated Income Statement
Revenue	0	0	0	0
Operating Expenses	(154)	(113)	(448)	(321)
Operating Income	154	113	448	321
Equity in Earnings of Subsidiaries	496	527	1,482	1,488
Interest (Expense) / Benefit	(134)	(133)	(399)	(389)
Nonoperating Income (Expense)	(1)	(12)	(4)	(17)
Earnings Before Income Taxes	515	495	1,527	1,403
Income Tax Benefit / (Expense)	(8)	14	(25)	33
Net Earnings	507	509	1,502	1,436
Total Comprehensive Earnings	518	518	1,523	1,476
CSX Transportation
Consolidated Income Statement
Revenue	2,920	3,202	8,972	9,417
Operating Expenses	2,182	2,368	6,765	7,121
Operating Income	738	834	2,207	2,296
Equity in Earnings of Subsidiaries	0	1	0	1
Interest (Expense) / Benefit	(8)	(11)	(24)	(39)
Nonoperating Income (Expense)	5	(9)	18	(13)
Earnings Before Income Taxes	735	815	2,201	2,245
Income Tax Benefit / (Expense)	(273)	(309)	(824)	(831)
Net Earnings	462	506	1,377	1,414
Total Comprehensive Earnings	462	507	1,374	1,422
Eliminations and Other
Consolidated Income Statement
Revenue	19	19	58	60
Operating Expenses	(22)	(10)	(80)	(35)
Operating Income	41	29	138	95
Equity in Earnings of Subsidiaries	(496)	(528)	(1,482)	(1,489)
Interest (Expense) / Benefit	6	7	19	16
Nonoperating Income (Expense)	(2)	(5)	(6)	(1)
Earnings Before Income Taxes	(451)	(497)	(1,331)	(1,379)
Income Tax Benefit / (Expense)	(11)	(9)	(46)	(35)
Net Earnings	(462)	(506)	(1,377)	(1,414)
Total Comprehensive Earnings	$ (462)	$ (507)	$ (1,374)	$ (1,422)

Summarized Consolidating Fina42

Summarized Consolidating Financial Data - Consolidating Balance Sheet (Details) - USD ($) $ / shares in Units, $ in Millions	Sep. 25, 2015	Dec. 26, 2014	Sep. 26, 2014	Dec. 27, 2013
Current Assets:
Cash and Cash Equivalents	$ 541	$ 669	$ 479	$ 592
Short-term Investments	425	292
Accounts Receivable - Net	1,003	1,129
Receivable from Affiliates	0	0
Materials and Supplies	309	273
Deferred Income Taxes	137	141
Other Current Assets	87	68
Total Current Assets	2,502	2,572
Properties	40,843	39,343
Accumulated Depreciation	(11,206)	(10,759)
Properties - Net	29,637	28,584
Other Long-term Assets	500	541
Total Assets	34,015	33,053
Current Liabilities:
Accounts Payable	842	845
Labor and Fringe Benefits Payable	447	613
Payable to Affiliates	0	0
Casualty, Environmental and Other Reserves	146	142
Current Maturities of Long-term Debt	18	228
Income and Other Taxes Payable	282	163
Other Current Liabilities	187	116
Total Current Liabilities	1,922	2,107
Casualty, Environmental and Other Reserves	270	276
Long-term Debt	10,088	9,514
Deferred Income Taxes	8,957	8,858
Other Long-term Liabilities	1,118	1,122
Total Liabilities	22,355	21,877
Shareholders' Equity
Common Stock, $1 Par Value	975	992
Other Capital	120	92
Retained Earnings	11,195	10,734
Accumulated Other Comprehensive Loss	(645)	(666)
Noncontrolling Interest	15	24
Total Shareholders' Equity	11,660	11,176
Total Liabilities and Shareholders' Equity	$ 34,015	$ 33,053
Common stock, par value (in dollars per share)	$ 1	$ 1
Investments in Conrail
Current Assets:
Investment in Affiliates and Consolidated Subsidiaries	$ 793	$ 779
Affiliates and Other Companies
Current Assets:
Investment in Affiliates and Consolidated Subsidiaries	583	577
Investments in Consolidated Subsidiaries
Current Assets:
Investment in Affiliates and Consolidated Subsidiaries	0	0
CSX Corporation
Current Assets:
Cash and Cash Equivalents	311	510	295	439
Short-term Investments	425	250
Accounts Receivable - Net	2	2
Receivable from Affiliates	1,224	1,211
Materials and Supplies	0	0
Deferred Income Taxes	10	3
Other Current Assets	4	0
Total Current Assets	1,976	1,976
Properties	1	1
Accumulated Depreciation	(1)	(1)
Properties - Net	0	0
Other Long-term Assets	173	178
Total Assets	24,577	23,685
Current Liabilities:
Accounts Payable	145	106
Labor and Fringe Benefits Payable	35	38
Payable to Affiliates	3,184	3,053
Casualty, Environmental and Other Reserves	0	0
Current Maturities of Long-term Debt	0	200
Income and Other Taxes Payable	(320)	(150)
Other Current Liabilities	0	0
Total Current Liabilities	3,044	3,247
Casualty, Environmental and Other Reserves	0	0
Long-term Debt	9,302	8,705
Deferred Income Taxes	(159)	(172)
Other Long-term Liabilities	745	753
Total Liabilities	12,932	12,533
Shareholders' Equity
Common Stock, $1 Par Value	975	992
Other Capital	120	92
Retained Earnings	11,195	10,734
Accumulated Other Comprehensive Loss	(645)	(666)
Noncontrolling Interest	0	0
Total Shareholders' Equity	11,645	11,152
Total Liabilities and Shareholders' Equity	24,577	23,685
CSX Corporation | Investments in Conrail
Current Assets:
Investment in Affiliates and Consolidated Subsidiaries	0	0
CSX Corporation | Affiliates and Other Companies
Current Assets:
Investment in Affiliates and Consolidated Subsidiaries	(39)	(39)
CSX Corporation | Investments in Consolidated Subsidiaries
Current Assets:
Investment in Affiliates and Consolidated Subsidiaries	22,467	21,570
CSX Transportation
Current Assets:
Cash and Cash Equivalents	168	100	128	91
Short-term Investments	0	0
Accounts Receivable - Net	178	206
Receivable from Affiliates	2,304	2,418
Materials and Supplies	309	272
Deferred Income Taxes	128	139
Other Current Assets	70	61
Total Current Assets	3,157	3,196
Properties	38,278	36,888
Accumulated Depreciation	(9,861)	(9,516)
Properties - Net	28,417	27,372
Other Long-term Assets	398	387
Total Assets	32,622	31,599
Current Liabilities:
Accounts Payable	667	707
Labor and Fringe Benefits Payable	374	511
Payable to Affiliates	483	514
Casualty, Environmental and Other Reserves	130	126
Current Maturities of Long-term Debt	18	29
Income and Other Taxes Payable	581	293
Other Current Liabilities	185	111
Total Current Liabilities	2,438	2,291
Casualty, Environmental and Other Reserves	216	213
Long-term Debt	786	809
Deferred Income Taxes	8,901	8,827
Other Long-term Liabilities	493	487
Total Liabilities	12,834	12,627
Shareholders' Equity
Common Stock, $1 Par Value	181	181
Other Capital	5,090	5,077
Retained Earnings	14,532	13,717
Accumulated Other Comprehensive Loss	(34)	(31)
Noncontrolling Interest	19	28
Total Shareholders' Equity	19,788	18,972
Total Liabilities and Shareholders' Equity	32,622	31,599
CSX Transportation | Investments in Conrail
Current Assets:
Investment in Affiliates and Consolidated Subsidiaries	0	0
CSX Transportation | Affiliates and Other Companies
Current Assets:
Investment in Affiliates and Consolidated Subsidiaries	650	644
CSX Transportation | Investments in Consolidated Subsidiaries
Current Assets:
Investment in Affiliates and Consolidated Subsidiaries	0	0
Eliminations and Other
Current Assets:
Cash and Cash Equivalents	62	59	$ 56	$ 62
Short-term Investments	0	42
Accounts Receivable - Net	823	921
Receivable from Affiliates	(3,528)	(3,629)
Materials and Supplies	0	1
Deferred Income Taxes	(1)	(1)
Other Current Assets	13	7
Total Current Assets	(2,631)	(2,600)
Properties	2,564	2,454
Accumulated Depreciation	(1,344)	(1,242)
Properties - Net	1,220	1,212
Other Long-term Assets	(71)	(24)
Total Assets	(23,184)	(22,231)
Current Liabilities:
Accounts Payable	30	32
Labor and Fringe Benefits Payable	38	64
Payable to Affiliates	(3,667)	(3,567)
Casualty, Environmental and Other Reserves	16	16
Current Maturities of Long-term Debt	0	(1)
Income and Other Taxes Payable	21	20
Other Current Liabilities	2	5
Total Current Liabilities	(3,560)	(3,431)
Casualty, Environmental and Other Reserves	54	63
Long-term Debt	0	0
Deferred Income Taxes	215	203
Other Long-term Liabilities	(120)	(118)
Total Liabilities	(3,411)	(3,283)
Shareholders' Equity
Common Stock, $1 Par Value	(181)	(181)
Other Capital	(5,090)	(5,077)
Retained Earnings	(14,532)	(13,717)
Accumulated Other Comprehensive Loss	34	31
Noncontrolling Interest	(4)	(4)
Total Shareholders' Equity	(19,773)	(18,948)
Total Liabilities and Shareholders' Equity	(23,184)	(22,231)
Eliminations and Other | Investments in Conrail
Current Assets:
Investment in Affiliates and Consolidated Subsidiaries	793	779
Eliminations and Other | Affiliates and Other Companies
Current Assets:
Investment in Affiliates and Consolidated Subsidiaries	(28)	(28)
Eliminations and Other | Investments in Consolidated Subsidiaries
Current Assets:
Investment in Affiliates and Consolidated Subsidiaries	$ (22,467)	$ (21,570)

Summarized Consolidating Fina43

Summarized Consolidating Financial Data - Consolidating Cash Flow Statements (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 25, 2015	Sep. 26, 2014	Sep. 25, 2015	Sep. 26, 2014
Operating Activities
Net Cash Provided by (Used in) Operating Activities			$ 2,512	$ 2,302
Investing Activities
Property Additions			(1,909)	(1,557)
Purchase of Short-term Investments			(1,170)	(1,170)
Proceeds from Sales of Short-term Investments			1,040	1,102
Proceeds from Property Dispositions			46	57
Other Investing Activities			42	(52)
Net Cash Used in Investing Activities			(1,951)	(1,620)
Financing Activities
Long-term Debt Issued			600	1,000
Long-term Debt Repaid			(228)	(932)
Dividends Paid			(512)	(470)
Shares Repurchased	$ (262)	$ (131)	(546)	(388)
Other Financing Activities			(3)	(5)
Net Cash Used in Financing Activities			(689)	(795)
Net Decrease in Cash and Cash Equivalents			(128)	(113)
Cash and Cash Equivalents at Beginning of Period			669	592
Cash and Cash Equivalents at End of Period	541	479	541	479
CSX Corporation
Operating Activities
Net Cash Provided by (Used in) Operating Activities			637	397
Investing Activities
Property Additions			0	0
Purchase of Short-term Investments			(1,170)	(1,170)
Proceeds from Sales of Short-term Investments			995	1,077
Proceeds from Property Dispositions			0	0
Other Investing Activities			(11)	0
Net Cash Used in Investing Activities			(186)	(93)
Financing Activities
Long-term Debt Issued			600	1,000
Long-term Debt Repaid			(200)	(600)
Dividends Paid			(512)	(470)
Shares Repurchased			(546)	(388)
Other Financing Activities			8	10
Net Cash Used in Financing Activities			(650)	(448)
Net Decrease in Cash and Cash Equivalents			(199)	(144)
Cash and Cash Equivalents at Beginning of Period			510	439
Cash and Cash Equivalents at End of Period	311	295	311	295
CSX Transportation
Operating Activities
Net Cash Provided by (Used in) Operating Activities			2,313	2,301
Investing Activities
Property Additions			(1,794)	(1,398)
Purchase of Short-term Investments			0	0
Proceeds from Sales of Short-term Investments			0	0
Proceeds from Property Dispositions			46	57
Other Investing Activities			93	(147)
Net Cash Used in Investing Activities			(1,655)	(1,488)
Financing Activities
Long-term Debt Issued			0	0
Long-term Debt Repaid			(28)	(332)
Dividends Paid			(563)	(428)
Shares Repurchased			0	0
Other Financing Activities			1	(16)
Net Cash Used in Financing Activities			(590)	(776)
Net Decrease in Cash and Cash Equivalents			68	37
Cash and Cash Equivalents at Beginning of Period			100	91
Cash and Cash Equivalents at End of Period	168	128	168	128
Eliminations and Other
Operating Activities
Net Cash Provided by (Used in) Operating Activities			(438)	(396)
Investing Activities
Property Additions			(115)	(159)
Purchase of Short-term Investments			0	0
Proceeds from Sales of Short-term Investments			45	25
Proceeds from Property Dispositions			0	0
Other Investing Activities			(40)	95
Net Cash Used in Investing Activities			(110)	(39)
Financing Activities
Long-term Debt Issued			0	0
Long-term Debt Repaid			0	0
Dividends Paid			563	428
Shares Repurchased			0	0
Other Financing Activities			(12)	1
Net Cash Used in Financing Activities			551	429
Net Decrease in Cash and Cash Equivalents			3	(6)
Cash and Cash Equivalents at Beginning of Period			59	62
Cash and Cash Equivalents at End of Period	$ 62	$ 56	$ 62	$ 56