0000702165-11-000087.txt : 20110429 0000702165-11-000087.hdr.sgml : 20110429 20110429093404 ACCESSION NUMBER: 0000702165-11-000087 CONFORMED SUBMISSION TYPE: 10-Q PUBLIC DOCUMENT COUNT: 11 CONFORMED PERIOD OF REPORT: 20110331 FILED AS OF DATE: 20110429 DATE AS OF CHANGE: 20110429 FILER: COMPANY DATA: COMPANY CONFORMED NAME: NORFOLK SOUTHERN CORP CENTRAL INDEX KEY: 0000702165 STANDARD INDUSTRIAL CLASSIFICATION: RAILROADS, LINE-HAUL OPERATING [4011] IRS NUMBER: 521188014 STATE OF INCORPORATION: VA FISCAL YEAR END: 0211 FILING VALUES: FORM TYPE: 10-Q SEC ACT: 1934 Act SEC FILE NUMBER: 001-08339 FILM NUMBER: 11791300 BUSINESS ADDRESS: STREET 1: THREE COMMERCIAL PL CITY: NORFOLK STATE: VA ZIP: 23510-2191 BUSINESS PHONE: 7576292680 MAIL ADDRESS: STREET 1: THREE COMMERCIAL PL CITY: NORFOLK STATE: VA ZIP: 23510-2191 10-Q 1 nsc20110331.htm

UNITED STATES
SECURITIES AND EXCHANGE COMMISSION
Washington, DC 20549

FORM 10-Q

(X)       QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF             1934 for the quarterly period ended MARCH 31, 2011

(   )      TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF
           1934 for the transition period from ___________ to___________

Commission file number 1-8339

logo

NORFOLK SOUTHERN CORPORATION
(Exact name of registrant as specified in its charter)
 

Virginia
(State or other jurisdiction of incorporation)
52-1188014
(IRS Employer Identification No.)
Three Commercial Place
Norfolk, Virginia

(Address of principal executive offices)

23510-2191

(Zip Code)
(757) 629-2680
(Registrant’s telephone number, including area code)
No Change
(Former name, former address and former fiscal year, if changed since last report)
 

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

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

Indicate by check mark whether the registrant is a large accelerated filer, an accelerated filer, a non-accelerated filer, or a smaller reporting company. See definitions of  “large accelerated filer,” “accelerated filer,” and “smaller reporting company” in Rule 12b-2 of the Exchange Act.
Large accelerated filer [X]        Accelerated filer [   ]        Non-accelerated filer [   ]        Smaller reporting company [   ]

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

Indicate the number of shares outstanding of each of the issuer’s classes of common stock, as of the latest practicable date.

Class   Outstanding at March 31, 2011
Common Stock ($1.00 par value per share)   353,216,661 (excluding 20,320,777 shares held by the registrant’s consolidated subsidiaries)



    TABLE OF CONTENTS    
         
    NORFOLK SOUTHERN CORPORATION AND SUBSIDIARIES (NS)    
         
        Page
Part I. Financial Information:    
  Item 1. Financial Statements:    
    Consolidated Statements of Income
Three Months Ended March 31, 2011 and 2010
 
3
    Consolidated Balance Sheets
As of March 31, 2011 and December 31, 2010
 
4
    Consolidated Statements of Cash Flows
Three Months Ended March 31, 2011 and 2010
 
5
    Notes to Consolidated Financial Statements  
6
    Report of Independent Registered Public Accounting Firm  
15
  Item 2. Management’s Discussion and Analysis of Financial Condition and Results of Operations  
16
  Item 3. Quantitative and Qualitative Disclosures About Market Risk  
23
  Item 4. Controls and Procedures  
23
Part II. Other Information:    
  Item 1. Legal Proceedings  
24
  Item 1A. Risk Factors  
24
  Item 2. Unregistered Sales of Equity Securities and Use of Proceeds  
25
  Item 6. Exhibits  
25
Signatures    
26
         
Exhibit Index    
27

 

2



PART 1.  FINANCIAL INFORMATION


Item 1.  Financial Statements

Norfolk Southern Corporation and Subsidiaries
Consolidated Statements of Income
(Unaudited)

        Three Months Ended  
        March 31,  
       
2011
     
2010
 
      ($ in millions, except per share amounts)
                   
Railway operating revenues    
$
2,620
   
$
2,238
 
                   
Railway operating expenses:                  
  Compensation and benefits      
765
     
699
 
  Purchased services and rents      

383

     
335
 
  Fuel      
389
     
254
 
  Depreciation      
211
     
204
 
  Materials and other      
272
     
191
 
    Total railway operating expenses      
2,020
     
1,683
 
                   
     Income from railway operations      
600
     
555
 
                   
Other income - net      
27
     
20
 
Interest expense on debt      
112
     
119
 
                   
     Income before income taxes      
515
     
456
 
                   
Provision for income taxes      
190
     
199
 
                   
     Net income    
$
325
   
$
257
 
                   
Per share amounts:                  
  Net income:                  
     Basic    
$
0.91
   
$
0.69
 
     Diluted    
$
0.90
   
$
0.68
 
                   
  Dividends    
$
0.40
   
$
0.34
 
                   
                   
                   
                   
See accompanying notes to consolidated financial statements.

3



Norfolk Southern Corporation and Subsidiaries
Consolidated Balance Sheets
(Unaudited)
     
March 31,
 
December 31,
     
2011
 
2010
     
($ in millions)
Assets            
Current assets:            
  Cash and cash equivalents  
$
236 
 
$
827 
  Short-term investments    
252 
   
283 
  Accounts receivable - net    
934 
   
807 
  Materials and supplies    
190 
   
169 
  Deferred income taxes    
148 
   
145 
  Other current assets    
72 
   
240 
       Total current assets    
1,832 
   
2,471 
             
Investments    
2,199 
   
2,193 
Properties less accumulated depreciation of $9,386 and
  $9,262, respectively
   
23,451 
   
23,231 
Other assets    
246 
   
304 
             
       Total assets  
$
27,728 
 
$
28,199 
             
Liabilities and stockholders’ equity            
Current liabilities:            
  Accounts payable  
$
1,093 
 
$
1,181 
  Short-term debt    
-- 
   
100 
  Income and other taxes    
102 
   
199 
  Other current liabilities    
309 
   
244 
  Current maturities of long-term debt    
63 
   
358 
       Total current liabilities    
1,567 
   
2,082 
             
Long-term debt    
6,554 
   
6,567 
Other liabilities    
1,794 
   
1,793 
Deferred income taxes    
7,212 
   
7,088 
       Total liabilities    
17,127 
   
17,530 
             
Stockholders’ equity:            
  Common stock $1.00 per share par value, 1,350,000,000 shares            
     authorized; outstanding 353,216,661 and 357,362,604 shares,            
     respectively, net of treasury shares    
354 
   
358 
  Additional paid-in capital    
1,939 
   
1,892 
  Accumulated other comprehensive loss    
(786)
   
(805)
  Retained income    
9,094 
   
9,224 
       Total stockholders’ equity    
10,601 
   
10,669 
             
       Total liabilities and stockholders’ equity  
$
27,728 
 
$
28,199 
 
See accompanying notes to consolidated financial statements.

4



Norfolk Southern Corporation and Subsidiaries
Consolidated Statements of Cash Flows
(Unaudited)
     
Three Months Ended
     
March 31,
     
2011
   
2010
     
($ in millions)
             
Cash flows from operating activities            
  Net income  
$
325 
 
$
257 
  Reconciliation of net income to net cash provided by operating activities:            
      Depreciation    
213 
   
206 
      Deferred income taxes    
112 
   
40 
      Gains and losses on properties    
-- 
   
(1)
      Changes in assets and liabilities affecting operations:            
         Accounts receivable    
(127)
   
(101)
         Materials and supplies    
(21)
   
(16)
         Other current assets    
19 
   
17 
         Current liabilities other than debt    
27 
   
209 
      Other - net    
104 
   
147 
           Net cash provided by operating activities    
652 
   
758 
             
Cash flows from investing activities            
  Property additions    
(423)
   
(256)
  Property sales and other transactions    
(10)
   
-- 
  Investments, including short-term    
(4)
   
(155)
  Investment sales and other transactions    
55 
   
51 
           Net cash used in investing activities    
(382)
   
(360)
             
Cash flows from financing activities            
  Dividends    
(142)
   
(126)
  Common stock issued - net    
32 
   
21 
  Purchase and retirement of common stock    
(343)
   
-- 
  Debt repayments    
(408)
   
(128)
           Net cash used in financing activities    
(861)
   
(233)
             
           Net increase (decrease) in cash and cash equivalents    
(591)
   
165 
             
Cash and cash equivalents            
  At beginning of year    
827 
   
996 
             
  At end of period  
$
236 
 
$
1,161 
             
Supplemental disclosure of cash flow information            
  Cash paid during the period for:            
      Interest (net of amounts capitalized)  
$
72 
 
$
50 
      Income taxes (net of refunds)  
$
 
$
-- 
             
See accompanying notes to consolidated financial statements.

5



Norfolk Southern Corporation and Subsidiaries
Notes to Consolidated Financial Statements
(Unaudited)

In the opinion of management, the accompanying unaudited interim consolidated financial statements contain all adjustments (consisting of normal recurring accruals) necessary to present fairly Norfolk Southern Corporation (Norfolk Southern) and subsidiaries’ (collectively, NS) financial condition as of March 31, 2011, and December 31, 2010, and its results of operations and cash flows for the three months ended March 31, 2011 and 2010, in conformity with U.S. generally accepted accounting principles.

These Consolidated Financial Statements should be read in conjunction with the consolidated financial statements and notes included in NS’ latest Annual Report on Form 10-K.

1.  Stock-Based Compensation

In the first quarter of 2011, a committee of non-employee directors of Norfolk Southern’s Board of Directors granted stock options, restricted stock units and performance share units (PSUs) pursuant to the Long-Term Incentive Plan (LTIP) and granted stock options pursuant to the Thoroughbred Stock Option Plan (TSOP) as discussed below.  Stock-based compensation expense was $42 million during the first quarter of 2011 and $40 million during the same period of 2010.  The total tax effects recognized in income in relation to stock-based compensation were net benefits of $14 million and $13 million for the quarters ended March 31, 2011 and 2010, respectively.

Stock Options

In the first quarter of 2011, 627,700 options were granted under the LTIP and 257,000 options were granted under the TSOP.  In each case, the grant price was $62.75, which was the greater of the average fair market value of Norfolk Southern common stock (Common Stock) or the closing price of the Common Stock on the effective date of the grant, and the options have a term of ten years.  The options granted under the LTIP and TSOP in 2011 may not be exercised prior to the fourth and third anniversaries of the date of grant, respectively.  Holders of the 2011 options granted under the LTIP who remain actively employed receive cash dividend equivalent payments for four years in an amount equal to the regular quarterly dividends paid on Common Stock.  Dividend equivalent payments are not made on TSOP options.

The fair value of each option award in 2011 was measured on the date of grant using a lattice-based option valuation model.  Expected volatilities are based on implied volatilities from traded options on Common Stock and historical volatility of Common Stock.  NS uses historical data to estimate option exercises and employee terminations within the valuation model.  The average expected option life is derived from the output of the valuation model and represents the period of time that options granted are expected to be outstanding.  The average risk-free interest rate is based on the U.S. Treasury yield curve in effect at the time of grant.  A dividend yield of zero was used for LTIP options during the four-year period in which dividend equivalent payments are made.  A dividend yield of 2.55% was used for LTIP options for periods where no dividend equivalent payments are made as well as for TSOP options which do not receive dividend equivalents.  The assumptions for the 2011 LTIP and TSOP grants are shown in the following table:

Expected volatility range
28% - 32%
Average expected volatility
28%
Average expected option life
8.5 years
Average risk-free interest rate
3.42%
LTIP per-share grant-date fair value
$22.26
TSOP per-share grant-date fair value
$18.10

For the first three months of 2011, options relating to 759,193 shares were exercised, yielding $20 million of cash proceeds and $10 million of tax benefit recognized as additional paid-in capital.  For the first three months of 2010, options relating to 592,110 shares were exercised yielding $12 million of cash proceeds and $7 million of tax benefit recognized as additional paid-in capital.



6



Restricted Stock Units and Restricted Shares

There were 177,400 restricted stock units granted in 2011, with an average grant-date fair value of $62.75 and a five-year restriction period.  The restricted stock units granted in 2011 will be settled through the issuance of shares of Common Stock.

During the first quarter of 2011, no restricted stock units were earned and paid out.  The total related tax benefit recognized as additional paid-in capital was less than $1 million in the first quarter of 2011.

During the first quarter of 2010, 286,709 restricted stock units were earned and paid out in cash with a weighted average fair value of $48.88.  Also earned and distributed were 433,236 restricted shares with a weighted-average grant-date fair value of $34.10.  The total related tax benefit recognized as additional paid-in capital was $2 million in the first quarter of 2010.

Performance Share Units

PSUs provide for awards based on achievement of certain predetermined corporate performance goals at the end of a three-year cycle.  During the first quarter of 2011, there were 580,900 PSUs granted with a grant-date fair value of $62.75.  The PSUs granted in 2011 and 2010 will be paid in the form of shares of Common Stock.

During the first quarter of 2011, 850,595 PSUs were earned and paid out, one-half in shares of Common Stock and one-half in cash.  These PSUs had a grant-date fair value of $50.47 per unit and a fair value at payout of $62.75 per unit.  The total related tax benefit recognized as additional paid-in capital was $2 million for the first quarter of 2011.

During the first quarter of 2010, 851,893 PSUs were earned and paid out, one-half in shares of Common Stock and one-half in cash.  These PSUs had a grant-date fair value of $49.56 per unit and a fair value at payout of $47.76 per unit.  The total related tax expense recognized as additional paid-in capital was less than $1 million for the first quarter of 2010.

2.  Income Taxes

During the first quarter of 2010, the Patient Protection and Affordable Care Act, and the Health Care and Education Reconciliation Act of 2010 were signed into law.  Provisions of the Acts eliminated, after 2012, the tax deduction available for reimbursed prescription drug expenses under the Medicare Part D retiree drug subsidy program.  As required by the Financial Accounting Standards Board Accounting Standards Codification (ASC) 740, “Income Taxes,” NS recorded a $27 million charge to deferred tax expense in the first quarter of 2010.

NS’ balance of unrecognized tax benefits reported at December 31, 2010, decreased by $38 million during the first quarter of 2011, primarily because the timing of deductibility of a tax position became certain during the quarter.  NS’ consolidated income tax return for 2008 is being audited by the Internal Revenue Service (IRS) and the examination, along with the IRS’ review of certain refund claims for prior years, is expected to be completed within the next six months.  If resolved favorably, the completion of the examination and review could reduce unrecognized tax benefits and income tax expense by approximately $40 million.



7



3.  Earnings Per Share

   
Three months ended March 31,
   
2011
   
2010
   
2011
   
2010
   
Basic
   
Diluted
          ($ in millions except per share, shares in millions)
                       
Net income
$
325 
 
$
257 
 
$
325 
 
$
257 
Dividend equivalent payments  
(2)
   
(2)
   
(2)
   
(2)
Income available to common stockholders
$
323 
 
$
255 
 
$
323 
 
$
255 
                       
Weighted-average shares outstanding  
355.2 
   
369.5 
   
355.2 
   
369.5 
Dilutive effect of outstanding options and share-settled awards              
5.3 
   
5.4 
Adjusted weighted-average shares outstanding              
360.5 
   
374.9 
Earnings per share
$
0.91 
 
$
0.69 
 
$
0.90 
 
$
0.68 

During the first quarters of 2011 and 2010, dividend equivalent payments were made to holders of stock options and restricted stock units.  For purposes of computing basic earnings per share, the total amount of dividend equivalent payments made to holders of stock options and restricted stock units were deducted from net income to determine income available to common stockholders.  For purposes of computing diluted earnings per share, NS evaluates on a grant-by-grant basis those stock options and restricted stock units receiving dividend equivalent payments under the two-class and treasury stock methods to determine which method is the more dilutive for each award.  For all stock option awards, for all periods presented, the two-class method was more dilutive and, as a result, net income was reduced by the amount of dividend equivalent payments on these awards to determine income available to common stockholders.  For all restricted stock unit awards, for all periods presented, the treasury stock method was more dilutive and, as such, net income was not adjusted for the effect of these dividend equivalent payments.  The diluted calculations exclude options having exercise prices exceeding the average market price of Common Stock as follows: zero in 2011 and 2010.

4.  Stockholders’ Equity

Common stock is reported net of shares held by consolidated subsidiaries of Norfolk Southern, which at March 31, 2011 and December 31, 2010, amounted to 20,320,777 and 20,336,843 shares, respectively, with a cost of $19 million as of the end of both periods.

5.  Stock Repurchase Program

NS repurchased and retired 5.3 million shares of Common Stock in the first quarter of 2011, at a cost of $343 million. There were no shares repurchased under this program in the first quarter of 2010.  The timing and volume of purchases is guided by management’s assessment of market conditions and other pertinent factors.  Any near-term share repurchases are expected to be made with internally generated cash, cash on hand, or proceeds from borrowings.  Since 2005, NS has repurchased and retired 84.7 million shares at a total cost of $4.5 billion.



8



6.  Investments

 
March 31,
 
December 31,
 
2011
 
2010
 
($ in millions)    
                   
Short-term investments with average remaining maturities:                  
  Available-for-sale:                  
   Certificates of deposit, 4 and 5 months, respectively
$
56
     
$
76
   
   Corporate bonds, 2 and 4 months, respectively  
38
       
64
   
   Commercial paper, 2 and 4 months, respectively  
25
       
35
   
       Total available-for-sale  
119
       
175
   
  Held-to-maturity:                  
   Federal government bonds, 7 and 9 months, respectively  
74
       
49
   
   Corporate bonds, 7 and 10 months, respectively  
59
       
59
   
       Total held-to-maturity  
133
       
108
   
       Total short-term investments
$
252
     
$
283
   

Investment in Conrail

Through a limited liability company, Norfolk Southern and CSX Corporation (CSX) jointly own Conrail Inc. (Conrail), whose primary subsidiary is Consolidated Rail Corporation (CRC).  NS has a 58% economic and 50% voting interest in the jointly owned entity, and CSX has the remainder of the economic and voting interests.  NS’ investment in Conrail was $965 million at March 31, 2011, and $959 million at December 31, 2010.

CRC owns and operates certain properties (the Shared Assets Areas) for the joint and exclusive benefit of Norfolk Southern Railway Company (NSR) and CSX Transportation, Inc. (CSXT).  The costs of operating the Shared Assets Areas are borne by NSR and CSXT based on usage.  In addition, NSR and CSXT pay CRC a fee for access to the Shared Assets Areas.  “Purchased services and rents” and “Fuel” include expenses for the use of the Shared Assets Areas totaling $33 million for the first quarter of 2011 and $29 million for the first quarter of 2010.  NS’ equity in the earnings of Conrail, net of amortization, included in “Other income – net” was $6 million for the first quarters of 2011 and 2010.

“Accounts payable” includes $140 million at March 31, 2011, and $128 million at December 31, 2010, due to Conrail for the operation of the Shared Assets Areas.  In addition, “Other liabilities” includes $133 million at both March 31, 2011 and December 31, 2010, for long-term advances from Conrail, maturing 2035, that bear interest at an average rate of 4.4%.



9



7.  Pensions and Other Postretirement Benefits

Norfolk Southern and certain subsidiaries have both funded and unfunded defined benefit pension plans covering principally salaried employees.  Norfolk Southern and certain subsidiaries also provide specified health care and death benefits to eligible retired employees and their dependents.  Under the present plans, which may be amended or terminated at NS’ option, a defined percentage of health care expenses are covered, reduced by any deductibles, co-payments, Medicare payments, and in some cases, coverage provided under other group insurance policies.

   
Three months ended March 31,
   
2011
   
2010
   
2011
   
2010
   
Pension Benefits
   
Other Benefits
         
($ in millions)
     
                       
Service cost
$
 
$
 
$
 
$
Interest cost  
23 
   
24 
   
15 
   
15 
Expected return on plan assets  
(35)
   
(36)
   
(4)
   
(4)
Amortization of net losses  
17 
   
12 
   
11 
   
12 
Amortization of prior service cost  
-- 
   
   
-- 
   
-- 
    Net cost
$
12 
 
$
 
$
26 
 
$
27 

8.  Comprehensive Income

   
Three Months Ended
   
March 31,
   
2011
   
2010
   
($ in millions)
           
Net income
$
325
 
$
257
Other comprehensive income  
19
   
19
           
    Total comprehensive income
$
344
 
$
276

“Other comprehensive income” in 2011 and 2010 reflects primarily, net of tax, the amortization of the actuarial net losses and prior service cost for the pension and other postretirement benefit plans.

10



9.  Fair Value

Fair Value Measurements

ASC 820-10, “Fair Value Measurements,” established a framework for measuring fair value and a fair value hierarchy that prioritizes the inputs to valuation techniques used to measure fair value into three broad levels, as follows:

Level 1 Inputs to the valuation methodology are unadjusted quoted prices for identical assets or liabilities in active markets that NS has the ability to access.
   
Level 2 Inputs to the valuation methodology include:
  • Quoted prices for similar assets or liabilities in active markets;
  • Quoted prices for identical or similar assets or liabilities in inactive markets;
  • Inputs other than quoted prices that are observable for the asset or liability;
  • Inputs that are derived principally from or corroborated by observable market data by correlation or other means.
   
  If the asset or liability has a specified (contractual) term, the Level 2 input must be observable for substantially the full term of the asset or liability.
   
Level 3 Inputs to the valuation methodology are unobservable and significant to the fair value measurement.

The asset’s or liability’s fair value measurement level within the hierarchy is based on the lowest level of any input that is significant to the fair value measurement.  At March 31, 2011 and December 31, 2010, for assets measured at fair value on a recurring basis, there were $119 million and $175 million of available-for-sale securities valued under level 2 of the fair value hierarchy, respectively.  There were no available-for-sale securities valued under level 1 or level 3 valuation techniques.

Fair Values of Financial Instruments

NS has evaluated the fair values of financial instruments and methods used to determine those fair values.  The fair values of “Cash and cash equivalents,” “Short-term investments,” “Accounts receivable,” “Accounts payable,” and “Short-term debt” approximate carrying values because of the short maturity of these financial instruments.  The carrying value of corporate-owned life insurance is recorded at cash surrender value and, accordingly, approximates fair value.  The carrying amounts and estimated fair values for the remaining financial instruments, excluding derivatives and investments accounted for under the equity method, consisted of the following:

   
March 31, 2011
   
December 31, 2010
   
Carrying
Fair
   
Carrying
Fair
   
Amount
Value
   
Amount
Value
         
($ in millions)
     
                       
Long-term investments
$
170 
 
$
197 
 
$
192 
 
$
222 
Long-term debt, including current maturities
$
(6,617)
 
$
(7,768)
 
$
(6,925)
 
$
(7,971)

Underlying net assets were used to estimate the fair value of investments with the exception of notes receivable, which are based on future discounted cash flows.  The fair values of long-term debt were estimated based on quoted market prices or discounted cash flows using current interest rates for debt with similar terms, company rating, and remaining maturity.

Carrying amounts of available-for-sale securities reflect immaterial unrealized holding gains on March 31, 2011 and December 31, 2010.  Sales of available-for-sale securities were $55 million and $20 million for the three months ended March 31, 2011 and 2010, respectively.

11



10.  Commitments and Contingencies

Lawsuits

Norfolk Southern and/or certain subsidiaries are defendants in numerous lawsuits and other claims relating principally to railroad operations.  When management concludes that it is probable that a liability has been incurred and the amount of the liability can be reasonably estimated, it is accrued through a charge to earnings.  While the ultimate amount of liability incurred in any of these lawsuits and claims is dependent on future developments, in management’s opinion, the recorded liability is adequate to cover the future payment of such liability and claims.  However, the final outcome of any of these lawsuits and claims cannot be predicted with certainty, and unfavorable or unexpected outcomes could result in additional accruals that could be significant to results of operations in a particular year or quarter.  Any adjustments to the recorded liability will be reflected in earnings in the periods in which such adjustments are known.

Two of NS’ customers, DuPont and South Mississippi Electric Power Association (SMEPA), have filed rate reasonableness complaints at the Surface Transportation Board (STB) alleging that the NS tariff rates for transportation of regulated movements are unreasonable.  NS is disputing these allegations.  Since June 1, 2009, in the case of DuPont, and since January 1, 2011, in the case of SMEPA, NS has been billing and collecting amounts from the customers based on the challenged tariff rates.  Management presently expects resolution of these cases to occur in late 2012 or 2013.  The cases have not progressed to a point where management can provide an estimate of the possible loss or range of loss, if any.

Casualty Claims

Casualty claims include employee personal injury and occupational claims as well as third-party claims, all exclusive of legal costs.  To aid in valuing its personal injury liability and determining the amount to accrue with respect to such claim during the year, NS’ management utilizes studies prepared by an independent consulting actuarial firm.  Job-related accidental injury and occupational claims are subject to the Federal Employers’ Liability Act (FELA), which is applicable only to railroads.  FELA’s fault-based system produces results that are unpredictable and inconsistent as compared with a no-fault workers’ compensation system.  The variability inherent in this system could result in actual costs being different from the liability recorded.  While the ultimate amount of claims incurred is dependent on future developments, in management’s opinion, the recorded liability is adequate to cover the future payments of claims and is supported by the most recent actuarial study.  In all cases, NS records a liability when the expected loss for the claim is both probable and estimable.

The Consolidated Balance Sheets reflect long-term receivables for estimated recoveries from NS’ insurance carriers for claims associated with the January 6, 2005, derailment in Graniteville, S.C.  During the first quarter of 2010, NS settled an arbitration claim ($100 million) with one of its insurance carriers with no adverse effect on NS’ financial position, results of operations, or liquidity.  In March 2011, NS received an unfavorable ruling for an arbitration claim with another insurance carrier, and was denied recovery of the contested portion ($43 million) of the claim.  As a result, NS recorded a $43 million expense during the first quarter of 2011 for the receivables associated with the contested portion of the claim and a $15 million expense for other receivables affected by the ruling for which recovery is no longer probable.

Employee personal injury claims – The largest component of casualties and other claims expense is employee personal injury costs.  The independent actuarial firm engaged by NS provides quarterly studies to aid in valuing its employee personal injury liability and estimating its employee personal injury expense.  The independent actuarial firm studies NS’ historical patterns of reserving for claims and subsequent settlements, taking into account relevant outside influences.  The actuary uses the results of these analyses to estimate the ultimate amount of liability, which includes amounts for incurred but unasserted claims.  NS adjusts its liability quarterly based upon management’s assessment and the results of the study.  The estimate of loss liabilities is subject to inherent limitation given the difficulty of predicting future events such as jury decisions, court interpretations, or legislative changes and as such the actual loss may vary from the estimated liability recorded.

12



Occupational claims – Occupational claims (including asbestosis and other respiratory diseases, as well as conditions allegedly related to repetitive motion) are often not caused by a specific accident or event but rather allegedly result from a claimed exposure over time.  Many such claims are being asserted by former or retired employees, some of whom have not been employed in the rail industry for decades.  The independent actuarial firm provides an estimate of the occupational claims liability based upon NS’ history of claim filings, severity, payments, and other pertinent facts.  The liability is dependent upon management’s judgments made as to the specific case reserves as well as judgments of the consulting independent actuarial firm in the periodic studies.  The independent actuarial firm’s estimate of ultimate loss includes a provision for those claims that have been incurred but not reported.  This provision is derived by analyzing industry data and projecting NS’ experience into the future as far as can be reasonably determined.  NS adjusts its liability quarterly based upon management’s assessment and the results of the study.  However, it is possible that the recorded liability may not be adequate to cover the future payment of claims.  Adjustments to the recorded liability are reflected in operating expenses in the periods in which such adjustments become known.

Third-party claims – NS records a liability for third-party claims including those for highway crossing accidents, trespasser and other injuries, automobile liability, property damage, and lading damage.  The independent actuarial firm assists with the calculation of potential liability for third-party claims, except lading damage, based upon NS’ experience including number and timing of incidents, amount of payments, settlement rates, number of open claims, and legal defenses.  The actuarial estimate includes a provision for claims that have been incurred but have not yet been reported.  Each quarter NS adjusts its liability based upon management’s assessment and the results of the study.  Given the inherent uncertainty in regard to the ultimate outcome of third-party claims, it is possible that the actual loss may differ from the estimated liability recorded.

Environmental Matters

NS is subject to various jurisdictions’ environmental laws and regulations.  It is NS’ policy to record a liability where such liability or loss is probable and its amount can be estimated reasonably.  Claims, if any, against third parties, for recovery of cleanup costs incurred by NS are reflected as receivables (when collection is probable) in the Consolidated Balance Sheets and are not netted against the associated NS liability.  Environmental engineers regularly participate in ongoing evaluations of all known sites and in determining any necessary adjustments to liability estimates.  NS also has an Environmental Policy Council, composed of senior managers, to oversee and interpret its environmental policy.

NS’ Consolidated Balance Sheets include liabilities for environmental exposures of $32 million at March 31, 2011, and $33 million at December 31, 2010 (of which $12 million is classified as a current liability at the end of each period).  At March 31, 2011, the liability represents NS’ estimate of the probable cleanup and remediation costs based on available information at 142 known locations.  As of that date, nine sites accounted for $13 million of the liability, and no individual site was considered to be material.  NS anticipates that much of this liability will be paid out over five years; however, some costs will be paid out over a longer period.

At 30 locations, one or more Norfolk Southern subsidiaries, usually in conjunction with a number of other parties, have been identified as potentially responsible parties by the Environmental Protection Agency (EPA) or similar state authorities under the Comprehensive Environmental Response, Compensation and Liability Act of 1980, or comparable state statutes, which often impose joint and several liability for cleanup costs.

With respect to known environmental sites (whether identified by NS or by the EPA or comparable state authorities), estimates of NS’ ultimate potential financial exposure for a given site or in the aggregate for all such sites are necessarily imprecise because of the widely varying costs of currently available cleanup techniques, the likely development of new cleanup technologies, the difficulty of determining in advance the nature and full extent of contamination and each potential participant’s share of any estimated loss (and that participant’s ability to bear it), and evolving statutory and regulatory standards governing liability.

13



The risk of incurring environmental liability – for acts and omissions, past, present, and future – is inherent in the railroad business.  Some of the commodities in NS’ traffic mix, particularly those classified as hazardous materials, pose special risks that NS and its subsidiaries work diligently to minimize.  In addition, several NS subsidiaries own, or have owned, land used as operating property, or which is leased and operated by others, or held for sale.  Because environmental problems may exist on these properties that are latent or undisclosed, there can be no assurance that NS will not incur environmental liabilities or costs with respect to one or more of them, the amount and materiality of which cannot be estimated reliably at this time.  Moreover, lawsuits and claims involving these and potentially other unidentified environmental sites and matters are likely to arise from time to time.  The resulting liabilities could have a significant effect on financial position, results of operations, or liquidity in a particular year or quarter.

Based on its assessment of the facts and circumstances now known, management believes that it has recorded the probable costs for dealing with those environmental matters of which NS is aware.  Further, management believes that it is unlikely that any known matters, either individually or in the aggregate, will have a material adverse effect on NS’ financial position, results of operations, or liquidity.

Insurance

Norfolk Southern obtains on behalf of itself and its subsidiaries insurance for potential losses for third-party liability and first-party property damages.  NS is currently self-insured up to $50 million and above $1 billion per occurrence for bodily injury and property damage to third parties and up to $25 million and above $175 million per occurrence for property owned by NS or in NS’ care, custody, or control.

Purchase Commitments

At March 31, 2011, NS had outstanding purchase commitments totaling approximately $1.2 billion for long-term service contracts through 2019 as well as locomotives, track material, RoadRailer® trailers, and freight cars, in connection with its capital programs through 2014.

14



Report of Independent Registered Public Accounting Firm


The Board of Directors and Stockholders
Norfolk Southern Corporation:

We have reviewed the accompanying consolidated balance sheet of Norfolk Southern Corporation and subsidiaries as of March 31, 2011, and the related consolidated statements of income and cash flows for the three-month periods ended March 31, 2011 and 2010.  These consolidated financial statements are the responsibility of the Company’s management.

We conducted our review in accordance with the standards of the Public Company Accounting Oversight Board (United States).  A review of interim financial information consists principally of applying analytical procedures and making inquiries of persons responsible for financial and accounting matters.  It is substantially less in scope than an audit conducted in accordance with the standards of the Public Company Accounting Oversight Board (United States), the objective of which is the expression of an opinion regarding the financial statements taken as a whole.  Accordingly, we do not express such an opinion.

Based on our review, we are not aware of any material modifications that should be made to the consolidated financial statements referred to above for them to be in conformity with U.S. generally accepted accounting principles.

We have previously audited, in accordance with the standards of the Public Company Accounting Oversight Board (United States), the consolidated balance sheet of Norfolk Southern Corporation and subsidiaries as of December 31, 2010, and the related consolidated statements of income, changes in stockholders’ equity and cash flows for the year then ended (not presented herein); and in our report dated February 16, 2011, we expressed an unqualified opinion on those consolidated financial statements.  In our opinion, the information set forth in the accompanying consolidated balance sheet as of December 31, 2010, is fairly stated, in all material respects, in relation to the consolidated balance sheet from which it has been derived.


/s/KPMG LLP
KPMG LLP
Norfolk, Virginia
April 29, 2011

15



Item 2. Management’s Discussion and Analysis of Financial Condition and Results of Operations

Norfolk Southern Corporation and Subsidiaries
Management’s Discussion and Analysis of
Financial Condition and Results of Operations

The following discussion and analysis should be read in conjunction with the Consolidated Financial Statements and Notes.

OVERVIEW

Continued improvements in the domestic and global economies helped NS grow first quarter net income from $257 million in 2010 to $325 million in 2011.  The increase was primarily the result of a $45 million, or 8%, increase in income from railway operations, driven by a 17% rise in revenues which reflected higher average revenue per unit and increased traffic volumes, as well as reduced income tax expense.  Railway operating expenses rose 20%, reflecting higher fuel prices, increased traffic volumes, and the $58 million unfavorable insurance arbitration decision, which reduced net income by $36 million.  The railway operating ratio (a measure of the amount of operating revenues consumed by operating expenses), rose to 77.1%, compared with 75.2% for the first quarter of 2010.

Cash provided by operating activities for the first quarter of 2011 was $652 million, which along with cash on hand allowed for capital expenditures, debt repayments, share repurchases, and dividends.  In the first quarter of 2011, 5.3 million shares of Norfolk Southern Corporation common stock (Common Stock) were repurchased at a total cost of $343 million.  Since inception of the stock repurchase program in 2006, NS has repurchased and retired 84.7 million shares of Common Stock at a total cost of $4.5 billion.  At March 31, 2011, cash, cash equivalents, and short-term investments totaled $488 million.

SUMMARIZED RESULTS OF OPERATIONS

First quarter 2011 net income was $325 million, up $68 million, or 26%, compared with the same period last year.  The increase primarily resulted from a $45 million increase in income from railway operations that reflected a $382 million, or 17%, improvement in railway operating revenues, partially offset by a $337 million, or 20%, increase in railway operating expenses, which included the $58 million unfavorable insurance arbitration decision.  The first quarter also benefited from the absence of a $27 million deferred tax charge recorded in the prior year due to the enactment of health care legislation and higher income from non-operating items.

Oil prices affect NS’ results of operations in a variety of ways and can have an overall favorable or unfavorable impact in any particular period.  In addition to the impact of oil prices on general economic conditions, traffic volume, and supplier costs, oil prices directly affect NS’ revenues through market-based fuel surcharges and contract escalators (see “Railway Operating Revenues”) and also affect fuel costs (see “Railway Operating expenses”).  For the first quarter 2011, excluding the impact of increased consumption, the increase in fuel surcharge revenue was less than the increase in fuel expense. Future changes in oil prices may cause volatility in operating results that could be material to a particular year or quarter.




16



DETAILED RESULTS OF OPERATIONS

Railway Operating Revenues

First-quarter railway operating revenues were $2.6 billion in 2011, up $382 million, or 17%, compared with the first quarter of 2010.  As shown in the following table, the increases were the result of higher average revenue per unit (which includes the effects of $249 million in fuel surcharges, which were up $90 million), and higher traffic volume:

  First Quarter
  2011 vs. 2010
 
Increase
 
($ in millions)
     
Revenue per unit
$
201
Traffic volume (units)  
181
    Total
$
382

Many of Norfolk Southern’s negotiated fuel surcharges for coal and general merchandise traffic are based on the monthly average price of West Texas Intermediate Crude Oil (WTI Average Price).  These surcharges are reset the first day of each calendar month based on the WTI Average Price for the second preceding calendar month.  This two-month lag in applying WTI Average Price coupled with the change in fuel prices decreased fuel surcharge revenue by approximately $40 million in the first quarter.

Two of NS’ customers, DuPont and South Mississippi Electric Power Association (SMEPA), have filed rate reasonableness complaints at the Surface Transportation Board (STB) alleging that the NS tariff rates for transportation of regulated movements are unreasonable.  NS is disputing these allegations.  Since June 1, 2009, in the case of DuPont, and since January 1, 2011, in the case of SMEPA, NS has been billing and collecting amounts from the customers based on the challenged tariff rates.  Management presently expects resolution of these cases to occur in late 2012 or 2013.  Although the cases have not progressed to a point where management can provide an estimate of possible loss or range of loss, if any, unfavorable rulings could have a materially adverse effect on future revenues.

Revenues, units and average revenue per unit for NS’ market groups were as follows:

 
First Quarter 
   
Revenues
     
Units
     
Revenue per Unit
   
2011
   
2010
     
2011
 
2010
     
2011
   
2010
   
($ in millions)
     
    (in thousands)
     
($ per unit)
                                     
Coal
$
816
 
$
629
     
406.1
 
364.3
   
$
2,009
 
$
1,726
General merchandise:                                    
  Agriculture/consumer/gov’t  
351
   
325
     
155.6
 
158.3
     
2,257
   
2,054
  Chemicals  
338
   
314
     
95.7
 
96.6
     
3,532
   
3,249
  Metals and construction  
269
   
232
     
148.4
 
138.3
     
1,810
   
1,680
  Paper/clay/forest  
184
   
169
     
79.9
 
78.4
     
2,303
   
2,150
  Automotive  
177
   
159
     
78.6
 
70.4
     
2,258
   
2,266
General merchandise  
1,319
   
1,199
     
558.2
 
542.0
     
2,364
   
2,213
                                     
Intermodal  
485
   
410
     
746.9
 
676.6
     
649
   
605
                                     
    Total
$
2,620
 
$
2,238
     
1,711.2
 
1,582.9
   
$
1,531
 
$
1,414


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Coal

Coal revenues increased $187 million, or 30%, in the first quarter compared with the same period last year.  The increase reflected a 16% improvement in average revenue per unit and a 11% increase in traffic volume.  Coal, coke, and iron ore tonnage by market was as follows:

   
First Quarter
   
2011
 
2010
   
(tons in thousands)
         
Utility  
31,510
 
27,963
Export  
7,438
 
6,003
Domestic metallurgical  
3,774
 
4,109
Industrial  
1,825
 
1,817
    Total  
44,547
 
39,892

Utility coal tonnage increased 13% in the first quarter, reflecting new business and the resumption of shipments to electrical generation units that had been idled since the first quarter of 2009.  Export coal tonnage increased 24% in the first quarter, reflecting continued global demand for steel production.  Domestic metallurgical coal, coke, and iron ore tonnage was down 8% in the first quarter, as heightened export demand drew excess coal supplies from the domestic market.  Other coal tonnage was relatively flat in the first quarter compared to 2010.

Coal revenues for the remainder of the year are expected to increase compared to last year due to improved average revenue per unit, including fuel surcharges, and higher traffic volumes.

General Merchandise

General merchandise revenues increased $120 million, or 10%, in the first quarter compared with the same period last year, reflecting a 7% rise in average revenue per unit and a 3% increase in traffic volumes.

Agriculture, consumer products, and government volume decreased 2% for the first quarter, reflecting reduced short-haul shipments of corn due to the impact of a healthier local crop.  Chemicals volume decreased 1%, a result of fewer shipments of fly ash due to the completion of the Tennessee Valley Authority ash project in the fourth quarter of 2010.  Metals and construction volume increased 7%, reflecting more shipments of coil steel due to increased automotive and steel production, in addition to higher shipments of fractionating sand for natural gas drilling.  Paper, clay, and forest products volume was up 2%, reflecting increased shipments of pulpboard driven by strong export demand.  Automotive volume grew 12%, primarily a result of a 14% increase in North American light vehicle production due to improving consumer demand as the economy continued to show signs of recovery.

General merchandise revenues for the remainder of the year are expected to exceed 2010, reflecting higher average revenue per unit, including fuel surcharges, and increased traffic volumes.

Intermodal

Intermodal revenues increased $75 million, or 18%, in the first quarter compared with the same period last year, reflecting a 10% growth in volumes and a 7% improvement in average revenue per unit.  In the first quarter of 2011, all intermodal segments experienced volume increases, reflecting stronger market demand and continued highway conversions to rail due to the recovering economy and tightened truck capacity.  Domestic volume (which includes truckload and intermodal marketing companies’ volumes) increased 18%; Premium business, which includes parcel and less-than-truckload (LTL) carriers, increased 19%; international traffic volume improved 2%; and Triple Crown Services (Triple Crown), a service with rail-to-highway trailers, experienced a 2% growth in volume.

Intermodal revenues for the remainder of the year are expected to be above last year, reflecting increased traffic volumes and average revenue per unit, including fuel surcharges.

18



Railway Operating Expenses

Railway operating expenses were $2.0 billion, up $337 million, or 20% in the first quarter of 2011, compared to the same period last year, largely due to higher fuel prices, increased volume-related expenses, and an unfavorable insurance arbitration ruling.

Compensation and benefits expenses increased $66 million, or 9%, in the first quarter compared with the same period last year.  The increase was primarily the result of higher:

  • employee activity levels associated with higher volumes (up $20 million),
  • payroll taxes (up $12 million),
  • agreement health and welfare benefit costs for active employees (up $11 million),
  • incentive and stock-based compensation (up $5 million),
  • pension costs (up $4 million), and
  • wage rates (up $3 million).

Purchased services and rents includes the costs of services provided by outside contractors, the net costs of operating joint (or leased) facilities with other railroads and the net cost of equipment rentals.  This category of expenses increased $48 million, or 14%, in the first quarter, compared with the same period last year, reflecting the absence of the 2010 favorable settlement with a freight car supplier and increased volume-related costs associated with equipment rents, intermodal operations, transporting agreement employees, and roadway and equipment repairs and maintenance expenses, in addition to increased legal fees.

Fuel expense, which includes the cost of locomotive fuel as well as other fuel used in railway operations, increased $135 million, or 53%, for the first quarter, compared with the same period last year.  The increase consisted of $104 million based on price and $31 million based on consumption, which reflected a 35% increase in the average price per gallon of locomotive fuel and 11% higher locomotive fuel consumption.

Materials and other expenses (including the estimates of costs related to personal injury, property damage, and environmental matters) increased $81 million, or 42%, in the first quarter, compared with the same period last year, reflecting the unfavorable ruling from an arbitration panel, increased locomotive material costs, and higher derailment expenses.

The following table shows the components of materials and other expenses:

   
First Quarter
   
2011
   
2010
   
($ in millions)
           
Materials
$
94
 
$
87
Casualties and other claims  
99
   
34
Other  
79
   
70
    Total
$
272
 
$
191

NS engaged in arbitration with two of its insurance carriers that failed to respond to insurance claims submitted by NS arising out of the January 6, 2005 derailment in Graniteville, S.C.  During the first quarter of 2010, NS settled the first arbitration claim ($100 million) with one of the insurance carriers with no adverse effect on NS’ financial position, results of operations, or liquidity.  In March 2011, NS received an unfavorable ruling for the second arbitration claim, and was denied recovery of the contested portion ($43 million) of the claim.  As a result, NS recorded a $43 million expense during the first quarter of 2011 for the receivables associated with the contested portion of the claim and a $15 million expense for other receivables affected by the ruling for which recovery is no longer probable.

Other Income – Net

Other income – net was $27 million, up $7 million from the first quarter of last year reflecting higher coal royalties (up $4 million) and reduced interest expense on uncertain tax positions (down $3 million).

19



Provision for Income Taxes

The effective income tax rate for the first quarter of 2011 was 36.9%, compared with 43.6% for the same period last year.  The decrease was largely due to the absence of a $27 million deferred tax charge resulting from a change in law impacting the Medicare Part D retiree drug subsidy.

Fifty-percent bonus depreciation was allowed for federal income taxes for 2008 through 2010.  In December 2010, the Tax Relief, Unemployment Insurance Reauthorization and Job Creation Act increased bonus depreciation to 100 percent for the period September 2010 through the end of 2011 and allows 50 percent bonus depreciation in 2012.  Bonus depreciation does not have a material effect on NS’ total provision for income taxes or effective tax rate, but does significantly lower current tax expense and the related cash outflows for income taxes paid.

NS’ consolidated income tax return for 2008 is being audited by the Internal Revenue Service (IRS) and the examination, along with the IRS’ review of certain refund claims for prior years, is expected to be completed within the next six months.  If resolved favorably, the completion of the examination and review could reduce income tax expense by approximately $40 million.

FINANCIAL CONDITION AND LIQUIDITY

Cash provided by operating activities, NS’ principal source of liquidity, was $652 million for the first three months of 2011, compared with $758 million for the same period of 2010, reflecting the absence of the 2010 favorable settlement of an insurance claim related to the 2005 Graniteville derailment and the reduction of accounts payable, partially offset by improved operating results.  NS had working capital of $265 million at March 31, 2011, compared with $389 million at December 31, 2010.  The decrease in working capital is largely due to the use of cash on hand to invest in infrastructure, repurchase stock, and make dividend payments.  Cash, cash equivalents, and short-term investment balances totaled $488 million at March 31, 2011 and were invested in accordance with NS’ corporate investment policy as approved by the Board of Directors.  The portfolio contains securities that are subject to market risk.  There are no limits or restrictions on NS’ access to the assets.  NS expects that cash on hand combined with cash flows from operations will be sufficient to meet its ongoing obligations.  During the first quarter of 2011, NS repaid $300 million of 6.75% senior notes at maturity and committed to purchase an additional $223 million in coal cars through 2012.  Other than these items, there have been no other material changes to the information on NS’ future obligations contained in NS’ Form 10-K for the year ended December 31, 2010.

Cash used in investing activities was $382 million in the first three months of 2011, compared with $360 million in the same period last year, reflecting an increase in capital expenditures, offset in part by fewer investment purchases.

The CREATE project is a public-private partnership to reduce rail and highway congestion and add freight and passenger capacity in the metropolitan Chicago area.  NS and other railroads have agreed to participate in CREATE.  A portion of public funding has been approved.  The CREATE partners have developed a list of projects to be included in Phase I of CREATE.  A total of $100 million in federal funding has been secured for Phase I.  The railroads have contributed an additional $116 million and expect to complete Phase I by the end of 2012.  In addition, $133 million from the High Speed Rail Program and $100 million from the TIGER Stimulus Program have been committed to specific CREATE projects.  The State of Illinois and City of Chicago have also committed $14 million in additional funding.  As currently planned, the total CREATE project is estimated to cost $3.2 billion with city, state, and federal support.  If additional public funding is secured, the railroads are expected to contribute a total of $171 million towards the entire project.  NS expects to spend approximately $6 million during the remainder of 2011 related to the CREATE projects.

The Crescent Corridor consists of a program of projects for infrastructure and other facility improvements geared toward creating a seamless, high-capacity intermodal route spanning 11 states from New Jersey to Louisiana and offering truck-competitive service along several major interstate highway corridors, including I-81, I-85, I-20, I-40, I-59, I-78, and I-75.  Based on the public benefits that stand to be derived in the form of highway congestion relief, NS plans to implement certain elements of the Crescent Corridor program of projects through a series of public-private partnerships.  Currently, the Crescent Corridor has received or expects to receive a total of $256 million in public capital funding commitments from the Commonwealths of Pennsylvania and Virginia, the states of Alabama and Tennessee, the federal TIGER Stimulus Program and other federal funding sources related to projects in Alabama, Pennsylvania, Tennessee, and North Carolina.  NS currently estimates spending up to $227 million for the substantial completion of work on these projects which is expected in 2012, including planned capital expenditures for the remainder of 2011 as high as $65 million.


20



The MidAmerica Corridor is a proposed cooperative arrangement between NS and Canadian National Railway (CN) to effectively share track between Chicago, St. Louis, Kentucky, and Mississippi in order to establish more efficient routes for traffic moving between the midwestern and southeastern U.S., including potential coal traffic moving to NS-served southeastern utility plants from CN-served Illinois Basin coal producers.  To implement the MidAmerica Corridor, NS will continue to expend funds to upgrade the rail line operated by West Tennessee Railway between Fulton, Kentucky, and Corinth, Mississippi, a line over which NS would operate pursuant to recently obtained trackage rights.  In addition, NS will construct a connection with CN east of St. Louis.  Implementation of the MidAmerica corridor arrangement will begin in 2011 with the start of a daily train between St. Louis and the Southeast.  Projected capital improvements for the remainder of 2011 are expected to approximate $15 million.

Cash used in financing activities was $861 million in the first quarter of 2011 compared with $233 million in the first quarter of 2010.  The change reflected resumed share repurchases and the retirement of $300 million in senior notes.  Share repurchases were 5.3 million, totaling $343 million in the first quarter of 2011, compared to zero in the same period last year.  The timing and volume of future share repurchases will be guided by management’s assessment of market conditions and other pertinent factors.  Any near-term purchases under the program are expected to be made with internally generated cash, cash on hand, or proceeds from borrowings.  NS’ total debt-to-total capitalization ratio was 38.4% at March 31, 2011, compared with 39.7% at December 31, 2010.

As of March 31, 2011, NS has authority from its Board of Directors to issue an additional $1 billion of debt or equity securities through public or private sale.  NS has on file with the Securities and Exchange Commission a Form S-3 automatic shelf registration statement for well-known seasoned issuers under which securities may be issued pursuant to this authority.

NS also has in place and available a $1 billion, five-year credit agreement expiring in 2012, which provides for borrowings at prevailing rates and includes covenants.  NS had no amounts outstanding under this facility at March 31, 2011, and NS is in compliance with all of its covenants.  In October 2010, NS renewed its $350 million accounts receivable securitization program with a 364-day term to run until October 2011.  There was $100 million and $200 million outstanding under this program at March 31, 2011 and December 31, 2010, respectively.

APPLICATION OF CRITICAL ACCOUNTING ESTIMATES

The preparation of financial statements in accordance with U.S. generally accepted accounting principles requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities, the disclosure of contingent assets and liabilities at the date of the financial statements, and the reported amounts of revenue and expenses during the reporting period.  These estimates and assumptions may require significant judgment about matters that are inherently uncertain, and future events are likely to occur that may require management to make changes to these estimates and assumptions.  Accordingly, management regularly reviews these estimates and assumptions based on historical experience, changes in the business environment, and other factors that management believes to be reasonable under the circumstances.  Management regularly discusses the development, selection, and disclosures concerning critical accounting estimates with the Audit Committee of its Board of Directors.  There have been no significant changes to the Application of Critical Accounting Estimates disclosure contained in NS’ Form 10-K as of December 31, 2010.

OTHER MATTERS

Labor Agreements

More than 80% of NS’ railroad employees are covered by collective bargaining agreements with various labor unions. These agreements remain in effect until changed pursuant to the Railway Labor Act (RLA).  NS largely bargains nationally in concert with other major railroads.  Moratorium provisions in the labor agreements govern when the railroads and the unions may propose changes.

On or after November 1, 2009, NS and the nation’s other major railroads represented by the National Carriers Conference Committee (NCCC) served new proposals to begin the current round of bargaining.  The NCCC and a coalition of six unions led by the Transportation Communications Union (TCU) are currently negotiating with the assistance of a mediator from the National Mediation Board.  On January 12, 2011, the National Mediation Board accepted the application for mediation filed on behalf of the Rail Labor Bargaining Coalition, representing six labor organizations in national bargaining, and a mediator has been assigned.  The outcome of any of the negotiations cannot be determined at this point.

21



The current agreements with the Brotherhood of Locomotive Engineers and Trainmen (BLET) and the American Train Dispatchers Association (ATDA) extend through 2014.  Because NS has reached separate agreements with the BLET and the ATDA, only the health and welfare provisions from the national agreements apply to NS’ locomotive engineers and ATDA-represented dispatchers.  NS bargains separately with longshoremen, who are represented by the International Longshoremen’s Association (ILA), at Ashtabula (Ohio) Docks and do not participate in national bargaining.

Market Risks

NS manages its overall exposure to fluctuations in interest rates by issuing both fixed- and floating-rate debt instruments.  At March 31, 2011, NS’ debt subject to interest rate fluctuations totaled $100 million.  A 1% point increase in interest rates would increase NS’ total annual interest expense related to all its variable debt by approximately $1 million.  Management considers it unlikely that interest rate fluctuations applicable to these instruments will result in a material adverse effect on NS’ financial position, results of operations, or liquidity.

Environmental Matters

NS is subject to various jurisdictions’ environmental laws and regulations.  It is NS’ policy to record a liability where such liability or loss is probable and its amount can be estimated reasonably.  Claims, if any, against third parties for recovery of cleanup costs incurred by NS, are reflected as receivables (when collection is probable) in the Consolidated Balance Sheets and are not netted against the associated NS liability.  Environmental engineers regularly participate in ongoing evaluations of all known sites and in determining any necessary adjustments to liability estimates.  NS also has established an Environmental Policy Council, composed of senior managers, to oversee and interpret its environmental policy.

NS’ Consolidated Balance Sheets included liabilities for environmental exposures in the amount of $32 million at March 31, 2011, and $33 million at December 31, 2010 (of which $12 million is classified as a current liability at the end of each period).  At March 31, 2011, the liability represents NS’ estimate of the probable cleanup and remediation costs based on available information at 142 known locations.  As of that date, nine sites accounted for $13 million of the liability, and no individual site was considered to be material.  NS anticipates that much of this liability will be paid out over five years; however, some costs will be paid out over a longer period.

At 30 locations, one or more NS subsidiaries, usually in conjunction with a number of other parties, have been identified as potentially responsible parties by the Environmental Protection Agency (EPA) or similar state authorities under the Comprehensive Environmental Response, Compensation, and Liability Act of 1980, or comparable state statues, which often impose joint and several liability for cleanup costs.

With respect to known environmental sites (whether identified by NS or by the EPA or comparable state authorities), estimates of NS’ ultimate potential financial exposure for a given site or in the aggregate for all such sites are necessarily imprecise because of the widely varying costs of currently available cleanup techniques, the likely development of new cleanup technologies, the difficulty of determining in advance the nature and full extent of contamination and each potential participant’s share of any estimated loss (and that participant’s ability to bear it), and evolving statutory and regulatory standards governing liability.  NS estimates its environmental remediation liability on a site-by-site basis, using assumptions and judgments that management deems appropriate for each site.  As a result, it is not practical to quantitatively describe the effects of changes in these many assumptions and judgments.  NS has consistently applied its methodology of estimating its environmental liabilities.

Based on its assessment of known facts and circumstances, management believes that it has recorded the probable costs for dealing with those environmental matters of which NS is aware.  Further, management believes that it is unlikely that any known matters, either individually or in the aggregate, will have a material adverse effect on NS’ financial position, results of operations, or liquidity.

Inflation

In preparing financial statements, U.S. generally accepted accounting principles require the use of historical cost that disregards the effects of inflation on the replacement cost of property.  NS, a capital-intensive company, has most of its capital invested in such property.  The replacement cost of these assets, as well as the related depreciation expense, would be substantially greater than the amounts reported on the basis of historical cost.

22



FORWARD-LOOKING STATEMENTS

This Management’s Discussion and Analysis of Financial Condition and Results of Operations contains forward-looking statements that may be identified by the use of words like “believe,” “expect,” “anticipate,” and “project.”  Forward-looking statements reflect management’s good-faith evaluation of information currently available.  However, such statements are dependent on and, therefore, can be influenced by, a number of external variables over which management has little or no control, including:  legislative and regulatory developments; transportation of hazardous materials as a common carrier by rail; acts of terrorism or war; general economic conditions; competition and consolidation within the transportation industry; the operations of carriers with which NS interchanges; disruptions to NS’ technology infrastructure, including computer systems; labor difficulties, including strikes and work stoppages; commercial, operating, environmental, and climate change legislative and regulatory developments; results of litigation; natural events such as severe weather, hurricanes, and floods; unavailability of qualified personnel due to unpredictability of demand for rail services; fluctuation in supplies and prices of key materials, in particular diesel fuel; and changes in securities and capital markets.  For a discussion of significant risk factors applicable to NS, see Part II, Item 1A “Risk Factors.”  Forward-looking statements are not, and should not be relied upon as, a guarantee of future performance or results, nor will they necessarily prove to be accurate indications of the times at or by which any such performance or results will be achieved.  As a result, actual outcomes and results may differ materially from those expressed in forward-looking statements.  NS undertakes no obligation to update or revise forward-looking statements.



Item 3. Quantitative and Qualitative Disclosures about Market Risk

The information required by this item is included in Part I, Item 2, “Management’s Discussion and Analysis of Financial Condition and Results of Operations” under the heading “Market Risks and Hedging Activities.”

Item 4.  Controls and Procedures

(a)  Evaluation of Disclosure Controls and Procedures

Norfolk Southern’s Chief Executive Officer and Chief Financial Officer, have evaluated the effectiveness of NS’ disclosure controls and procedures (as such term is defined in Rules 13a-15(e) and 15d-15(e) under the Securities Exchange Act of 1934, as amended (the “Exchange Act”)) as of March 31, 2011.  Based on such evaluation, such officers have concluded that, as of March 31, 2011, NS’ disclosure controls and procedures are effective in alerting them on a timely basis to material information relating to NS (including its consolidated subsidiaries) required to be included in NS’ periodic filings under the Exchange Act.

(b)  Changes in Internal Control Over Financial Reporting

During the first quarter of 2011, management did not identify any changes in NS’ internal control over financial reporting that have materially affected, or are reasonably likely to materially affect, NS’ internal control over financial reporting.

 

 

23



PART II.  OTHER INFORMATION


Item 1.  Legal Proceedings

On June 25, 2010, the Ohio Attorney General filed a complaint in the Ashtabula Court of Common Pleas alleging certain violations of water laws by NS’ coal dock in Ashtabula, Ohio and seeking injunctive relief and civil penalties.  The complaint was filed simultaneously with a Consent Order for Preliminary Injunction that governs the installation of additional pollution control equipment at the dock.  This matter relates to previously disclosed enforcement activity initiated by the Ohio Environmental Protection Agency in early 2008.  The Pennsylvania Department of Environmental Protection has submitted to NS a proposed Consent Assessment of Civil Penalty with respect to several alleged environmental releases from September 2007 to January 2009.  Although NS will contest liability and the imposition of any penalties, because these governmental proceedings with respect to environmental laws and regulations involve potential fines, penalties or other monetary sanctions in excess of $100,000, we described them here consistent with SEC rules and requirements.  NS does not believe that the outcome of these proceedings will have a material effect on its financial position, results of operations, or liquidity.

On November 6, 2007, various antitrust class actions filed against NS and other Class 1 railroads in various Federal district courts regarding fuel surcharges were consolidated in the District of Columbia by the Judicial Panel on Multidistrict Litigation.  NS believes the allegations in the complaints are without merit and intends to vigorously defend the cases.  NS does not believe that the outcome of these proceedings will have a material effect on its financial position, results of operations, or liquidity.  A lawsuit containing similar allegations against NS and four other major railroads that was filed on March 25, 2008, in the U.S. District Court for the District of Minnesota was voluntarily dismissed by the plaintiff subject to a tolling agreement entered into in August 2008.

On March 3, 2010, NS received a Shareholder Litigation Demand Letter alleging that NS officers and directors breached fiduciary duties by causing NS to engage in anti-competitive practices relating to the use of fuel surcharges, which have harmed or will ultimately harm NS.  The allegations in the letter relate to those contained in the ongoing fuel surcharge class action litigation.  In response to the letter, pursuant to Virginia law, the Board of Directors created a Special Litigation Committee to review and evaluate the facts and circumstances surrounding the claims made in the Demand Letter.  On September 28, 2010, the shareholder filed a shareholder derivative complaint in United States District Court in the District of Columbia against NS, each of the current members of the Board of Directors, and former Chairman, President, and Chief Executive Officer.  Following an investigation utilizing independent counsel, the Special Litigation Committee issued a report on November 22, 2010 concluding unanimously that the Company should take no action in response to the Demand and should move to dismiss the Derivative Action because it is not in the best interest of the Company.  NS does not believe that the outcome of these proceedings will have a material effect on its financial position, results of operations, or liquidity.

On August 30, 2010, the Pipeline Hazardous Material Safety Administration (“PHMSA”) sent NS a Notice of Probable Violation (“NPV”) and assessment of possible penalty related to a 2009 audit PHMSA conducted at a 5.5-mile locomotive fuel pipeline serving the railroad’s Brosnan Yard in Macon, Georgia.  NS has subsequently received two Notices of Amendment and two additional NPV’s regarding this pipeline.  In addition, on December 13, 2010, NS made voluntary disclosures to PHMSA regarding potential violations relative to a 5.5-mile pipeline in Goldsboro, North Carolina, that is owned by a wholly owned subsidiary and that supplies jet fuel to the United States Air Force.  It is likely that these matters will involve potential fines, penalties, or other monetary sanctions in excess of $100,000 and are therefore described here consistent with SEC rules and requirements.  NS does not believe resolution of these claims will have a material effect on its financial position, results of operations, or liquidity.

Item 1A. Risk Factors

The risk factors included in NS’ 2010 Form 10-K remain unchanged and are incorporated herein by reference.

 


24



Item 2. Unregistered Sales of Equity Securities and Use of Proceeds

 

Period
 
(a) Total
Number
of Shares
(or Units)
Purchased(1)
 
(b) Average
Price Paid
per Share
(or Unit)
 
(c) Total
Number of
Shares
(or Units)
Purchased
as Part of
Publicly
Announced
Plans or
Programs(2)
 
(d) Maximum
Number (or
Approximate
Dollar Value)
of Shares (or Units)
that may yet be
Purchased Under
the Plans or
Programs(2)
                                         
January 1-31, 2011      
2,020,588
         
$63.49
         
2,020,588
     
43,596,690
                                                         
February 1-28, 2011      
1,759,405
         
$63.14
         
1,759,405
     
41,837,285
                                                         
March 1-31, 2011      
1,566,331
         
$66.12
         
1,560,161
     
40,277,124
                                                         
           Total      
5,346,324
                     
5,340,154
                       


(1)
  Of this amount, 6,170 represents shares tendered by employees in connection with the exercise of stock options under the Long-Term Incentive Plan.
(2)
  On November 22, 2005, the Board of Directors authorized a share repurchase program, pursuant to which up to 50 million shares of Common Stock could be purchased through December 31, 2015.  On March 27, 2007, the Board of Directors amended the program and increased the number of shares that may be repurchased to 75 million, and shortened the repurchase term by five years to December 31, 2010.  On July 27, 2010, NS’ Board of Directors authorized the repurchase of up to an additional 50 million shares of Common Stock through December 31, 2014.

Item 6.  Exhibits

See Exhibit Index beginning on page 27 for a description of the exhibits filed as part of this report.

 

 

25



SIGNATURES

Pursuant to the requirements of the Securities Exchange Act of 1934, the Registrant has duly caused this report to be signed on its behalf by the undersigned thereunto duly authorized.


        NORFOLK SOUTHERN CORPORATION
Registrant
         
         
         
Date:   April 29, 2011   /s/Howard D. McFadden
Howard D. McFadden
Corporate Secretary (Signature)
         
         
         
Date:   April 29, 2011   /s/C. H. Allison, Jr.
C. H. Allison, Jr.
Vice President and Controller
(Principal Accounting Officer) (Signature)

 

 

 

 

 

26



EXHIBIT INDEX

         
15*     Letter regarding unaudited interim financial information.
       
31*     Rule 13a-14(a)/15d-014(a) Certifications.
       
32*     Section 1350 Certifications.
       
101*     The following financial information from Norfolk Southern Corporation’s Quarterly Report on Form 10-Q for the quarter ended March 31, 2011, formatted in Extensible Business Reporting Language (XBRL) includes (i) the Consolidated Statements of Income for each of the three-month periods ended March 31, 2011 and 2010; (ii) the Consolidated Balance Sheets as of March 31, 2011, and December 31, 2010; (iii) the Consolidated Statements of Cash Flows for each of the three-month periods ended March 31, 2011 and 2010; and (iv) the Notes to Consolidated Financial Statements.
    

*  Filed herewith.

27


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Exhibit 15




The Board of Directors
Norfolk Southern Corporation:




Re:  Registration Statement Nos. 33-52031, 333-71321, 333-60722, 333-100936,
        333-109069 and 333-168414 on Form S-8 and 333-158240 on Form S-3.

With respect to the subject registration statements, we acknowledge our awareness of the use therein of our report dated April 29, 2011 related to our review of interim financial information.

Pursuant to Rule 436(c) under the Securities Act of 1933 (the Act), such report is not considered part of a registration statement prepared or certified by an independent registered public accounting firm, or a report prepared or certified by an independent registered public accounting firm within the meaning of Sections 7 and 11 of the Act.




/s/ KPMG LLP
KPGM LLP
Norfolk, Virginia
April 29, 2011

EX-2 4 nscex31.htm

Exhibit 31



CERTIFICATIONS OF CEO AND CFO PURSUANT TO
EXCHANGE ACT RULE 13a-14(a) OR RULE 15d-14(a)


I, Charles W. Moorman, certify that:
       
1. I have reviewed this Quarterly Report on Form 10-Q of Norfolk Southern Corporation;
2. Based on my knowledge, this report does not contain any untrue statement of a material fact or omit to state a material fact necessary to make the statements made, in light of the circumstances under which such statements were made, not misleading with respect to the period covered by this report;
3. Based on my knowledge, the financial statements, and other financial information included in this report, fairly present in all material respects the financial condition, results of operations and cash flows of the registrant as of, and for, the periods presented in this report;
4. The registrant’s other certifying officer(s) and I are responsible for establishing and maintaining disclosure controls and procedures (as defined in Exchange Act Rules 13a-15(e) and 15d-15(e)) and internal control over financial reporting (as defined in Exchange Act Rules 13a-15(f) and 15d-15(f)) for the registrant and have:
  a. Designed such disclosure controls and procedures, or caused such disclosure controls and procedures to be designed under our supervision, to ensure that material information relating to the registrant, including its consolidated subsidiaries, is made known to us by others within those entities, particularly during the period in which this report is being prepared;
  b. Designed such internal control over financial reporting, or caused such internal control over financial reporting to be designed under our supervision, to provide reasonable assurance regarding the reliability of financial reporting and the preparation of financial statements for external purposes in accordance with generally accepted accounting principles;
  c. Evaluated the effectiveness of the registrant’s disclosure controls and procedures and presented in this report our conclusions about the effectiveness of the disclosure controls and procedures, as of the end of the period covered by this report based on such evaluation; and
  d. Disclosed in this report any change in the registrant’s internal control over financial reporting that occurred during the registrant’s most recent fiscal quarter (the registrant’s fourth fiscal quarter in the case of an annual report) that has materially affected, or is reasonably likely to materially affect, the registrant’s internal control over financial reporting; and
5. The registrant’s other certifying officer(s) and I have disclosed, based on our most recent evaluation of internal control over financial reporting, to the registrant’s auditors and the audit committee of the registrant’s board of directors (or persons performing the equivalent functions):
  a. All significant deficiencies and material weaknesses in the design or operation of internal control over financial reporting which are reasonably likely to adversely affect the registrant’s ability to record, process, summarize and report financial information; and
  b. Any fraud, whether or not material, that involves management or other employees who have a significant role in the registrant’s internal control over financial reporting.
 
Dated:  April 29, 2011
 
     
/s/ Charles W. Moorman
Charles W. Moorman
Chairman, President and Chief Executive Officer
     




I, James A. Squires, certify that:
       
1. I have reviewed this Quarterly Report on Form 10-Q of Norfolk Southern Corporation;
2. Based on my knowledge, this report does not contain any untrue statement of a material fact or omit to state a material fact necessary to make the statements made, in light of the circumstances under which such statements were made, not misleading with respect to the period covered by this report;
3. Based on my knowledge, the financial statements, and other financial information included in this report, fairly present in all material respects the financial condition, results of operations and cash flows of the registrant as of, and for, the periods presented in this report;
4. The registrant’s other certifying officer(s) and I are responsible for establishing and maintaining disclosure controls and procedures (as defined in Exchange Act Rules 13a-15(e) and 15d-15(e)) and internal control over financial reporting (as defined in Exchange Act Rules 13a-15(f) and 15d-15(f)) for the registrant and have:
  a. Designed such disclosure controls and procedures, or caused such disclosure controls and procedures to be designed under our supervision, to ensure that material information relating to the registrant, including its consolidated subsidiaries, is made known to us by others within those entities, particularly during the period in which this report is being prepared;
  b. Designed such internal control over financial reporting, or caused such internal control over financial reporting to be designed under our supervision, to provide reasonable assurance regarding the reliability of financial reporting and the preparation of financial statements for external purposes in accordance with generally accepted accounting principles;
  c. Evaluated the effectiveness of the registrant’s disclosure controls and procedures and presented in this report our conclusions about the effectiveness of the disclosure controls and procedures, as of the end of the period covered by this report based on such evaluation; and
  d. Disclosed in this report any change in the registrant’s internal control over financial reporting that occurred during the registrant’s most recent fiscal quarter (the registrant’s fourth fiscal quarter in the case of an annual report) that has materially affected, or is reasonably likely to materially affect, the registrant’s internal control over financial reporting; and
5. The registrant’s other certifying officer(s) and I have disclosed, based on our most recent evaluation of internal control over financial reporting, to the registrant’s auditors and the audit committee of the registrant’s board of directors (or persons performing the equivalent functions):
  a. All significant deficiencies and material weaknesses in the design or operation of internal control over financial reporting which are reasonably likely to adversely affect the registrant’s ability to record, process, summarize and report financial information; and
  b. Any fraud, whether or not material, that involves management or other employees who have a significant role in the registrant’s internal control over financial reporting.
 
Dated:  April 29, 2011
 
     
/s/ James A. Squires
James A. Squires
Executive Vice President Finance and Chief Financial Officer
     
EX-3 5 nscex32.htm

Exhibit 32



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




I certify, to the best of my knowledge, that the Quarterly Report on Form 10-Q for the period ended March 31, 2011, of Norfolk Southern Corporation fully complies with the requirements of Section 13(a) or 15(d) of the Securities Exchange Act of 1934 and that the information contained in the Form 10-Q fairly presents, in all material respects, the financial condition and results of operations of Norfolk Southern Corporation.
       
   
   
   
Signed:
/s/ Charles W. Moorman
Charles W. Moorman
Chairman, President and Chief Executive Officer
Norfolk Southern Corporation
 
Dated:  April 29, 2011
 
 
 
I certify, to the best of my knowledge, that the Quarterly Report on Form 10-Q for the period ended March 31, 2011, of Norfolk Southern Corporation fully complies with the requirements of Section 13(a) or 15(d) of the Securities Exchange Act of 1934 and that the information contained in the Form 10-Q fairly presents, in all material respects, the financial condition and results of operations of Norfolk Southern Corporation.
       
   
   
   
Signed:
/s/ James A. Squires
James A. Squires
Executive Vice President Finance and Chief Financial Officer
Norfolk Southern Corporation
 
Dated:  April 29, 2011
 
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2010-01-01 2010-03-31 0000702165 nsc:RsuMember 2011-01-01 2011-03-31 0000702165 nsc:PsuMember 2011-01-01 2011-03-31 0000702165 2010-12-31 0000702165 2010-01-01 2010-03-31 0000702165 2011-03-31 0000702165 2011-01-01 2011-03-31 iso4217:USD xbrli:shares xbrli:pure iso4217:USD xbrli:shares false --12-31 Q1 2011 2011-03-31 10-Q 0000702165 353216661 Large Accelerated Filer NORFOLK SOUTHERN CORP 100000000 43000000 5 4 4 2 4 2 <div> <table style="font-size: 20px;"> <tr><td><font size="2" class="_mt">&nbsp;</font></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td><font size="2" class="_mt">&nbsp;</font></td></tr> <tr><td><font size="2" class="_mt">&nbsp;</font></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td colspan="4"> <div align="center"><strong><font size="2" class="_mt">Three Months Ended</font></strong></div></td></tr> <tr><td><font size="2" class="_mt">&nbsp;</font></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td colspan="4"> <div align="center"><strong><font size="2" class="_mt">March 31,</font></strong></div></td></tr> <tr><td width="390"><font size="2" class="_mt">&nbsp;</font></td> <td width="20"><font size="2" class="_mt">&nbsp;</font></td> <td width="61"> <div align="center"><u><strong><font size="2" class="_mt">2011</font></strong></u></div></td> <td width="20"><font size="2" class="_mt">&nbsp;</font></td> <td width="20"><font size="2" class="_mt">&nbsp;</font></td> <td width="61"> <div align="center"><u><strong><font size="2" class="_mt">2010</font></strong></u></div></td></tr> <tr><td><font size="2" class="_mt">&nbsp;</font></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td colspan="4"> <div align="center"><em><font size="2" class="_mt">($ in millions)</font></em></div></td></tr> <tr><td><font size="2" class="_mt">&nbsp;</font></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td><font size="2" class="_mt">&nbsp;</font></td></tr> <tr><td><font size="2" class="_mt">Net income</font></td> <td> <div align="right"><font size="2" class="_mt">$</font></div></td> <td><font size="2" class="_mt"> </font> <div align="right"><font size="2" class="_mt">325</font></div><font size="2" class="_mt"> </font></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td> <div align="right"><font size="2" class="_mt">$</font></div></td> <td><font size="2" class="_mt"> </font> <div align="right"><font size="2" class="_mt">257</font></div><font size="2" class="_mt"> </font></td></tr> <tr><td><font size="2" class="_mt">Other comprehensive income</font></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td><font size="2" class="_mt"> </font> <div style="border-bottom: thin solid;" align="right"><font size="2" class="_mt">19</font></div><font size="2" class="_mt"> </font></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td><font size="2" class="_mt"> </font> <div style="border-bottom: thin solid;" align="right"><font size="2" class="_mt">19</font></div><font size="2" class="_mt"> </font></td></tr> <tr><td><font size="2" class="_mt">&nbsp;</font></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td><font size="2" class="_mt">&nbsp;</font></td></tr> <tr><td><font size="2" class="_mt">&nbsp;&nbsp;&nbsp;&nbsp;Total comprehensive income</font></td> <td> <div align="right"><font size="2" class="_mt">$</font></div></td> <td><font size="2" class="_mt"> </font> <div style="border-bottom: double;" align="right"><font size="2" class="_mt">344</font></div><font size="2" class="_mt"> </font></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td> <div align="right"><font size="2" class="_mt">$</font></div></td> <td><font size="2" class="_mt"> </font> <div style="border-bottom: double;" align="right"><font size="2" class="_mt">276</font></div><font size="2" class="_mt"> </font></td></tr></table> </div> 43000000 0.044 128000000 140000000 142 nine 13000000 5 30 29000000 33000000 <div> <table style="font-size: 20px;" width="882"> <tr><td><font size="2" class="_mt">&nbsp;</font></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td><font size="2" class="_mt">&nbsp;</font></td></tr> <tr><td><font size="2" class="_mt">&nbsp;</font></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td colspan="4"> <div align="center"><strong><font size="2" class="_mt">March 31, 2011</font></strong></div></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td colspan="4"> <div align="center"><strong><font size="2" class="_mt">December 31, 2010</font></strong></div></td></tr> <tr><td width="370"><font size="2" class="_mt">&nbsp;</font></td> <td width="20"><font size="2" class="_mt">&nbsp;</font></td> <td colspan="2"> <div align="center"><strong><font size="2" class="_mt">Carrying</font></strong></div></td> <td colspan="2"> <div align="center"><strong><font size="2" class="_mt">Fair</font></strong></div></td> <td width="20"><font size="2" class="_mt">&nbsp;</font></td> <td width="20"><font size="2" class="_mt">&nbsp;</font></td> <td colspan="2"> <div align="center"><strong><font size="2" class="_mt">Carrying</font></strong></div></td> <td colspan="2"> <div align="center"><strong><font size="2" class="_mt">Fair</font></strong></div></td></tr> <tr><td><font size="2" class="_mt">&nbsp;</font></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td colspan="2"> <div align="center"><u><strong><font size="2" class="_mt">Amount</font></strong></u></div></td> <td colspan="2"> <div align="center"><u><strong><font size="2" class="_mt">Value</font></strong></u></div></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td colspan="2"> <div align="center"><u><strong><font size="2" class="_mt">Amount</font></strong></u></div></td> <td colspan="2"> <div align="center"><u><strong><font size="2" class="_mt">Value</font></strong></u></div></td></tr> <tr><td><font size="2" class="_mt">&nbsp;</font></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td width="60"><font size="2" class="_mt">&nbsp;</font></td> <td width="20"><font size="2" class="_mt">&nbsp;</font></td> <td width="20"><font size="2" class="_mt">&nbsp;</font></td> <td colspan="4"> <div align="center"><em><font size="2" class="_mt">($ in millions)</font></em></div></td> <td width="20"><font size="2" class="_mt">&nbsp;</font></td> <td width="20"><font size="2" class="_mt">&nbsp;</font></td> <td width="60"><font size="2" class="_mt">&nbsp;</font></td></tr> <tr><td><font size="2" class="_mt">&nbsp;</font></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td width="60"><font size="2" class="_mt">&nbsp;</font></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td width="60"><font size="2" class="_mt">&nbsp;</font></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td><font size="2" class="_mt">&nbsp;</font></td></tr> <tr><td><font size="2" class="_mt">Long-term investments</font></td> <td> <div align="right"><font size="2" class="_mt">$</font></div></td> <td><font size="2" class="_mt"> </font> <div align="right"><font size="2" class="_mt">170&nbsp;</font></div><font size="2" class="_mt"> </font></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td> <div align="right"><font size="2" class="_mt">$</font></div></td> <td><font size="2" class="_mt"> </font> <div align="right"><font size="2" class="_mt">197&nbsp;</font></div><font size="2" class="_mt"> </font></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td> <div align="right"><font size="2" class="_mt">$</font></div></td> <td><font size="2" class="_mt"> </font> <div align="right"><font size="2" class="_mt">192&nbsp;</font></div><font size="2" class="_mt"> </font></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td> <div align="right"><font size="2" class="_mt">$</font></div></td> <td><font size="2" class="_mt"> </font> <div align="right"><font size="2" class="_mt">222&nbsp;</font></div><font size="2" class="_mt"> </font></td></tr> <tr><td><font size="2" class="_mt">Long-term debt, including current maturities</font></td> <td> <div align="right"><font size="2" class="_mt">$</font></div></td> <td><font size="2" class="_mt"> </font> <div align="right"><font size="2" class="_mt">(6,617)</font></div><font size="2" class="_mt"> </font></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td> <div align="right"><font size="2" class="_mt">$</font></div></td> <td><font size="2" class="_mt"> </font> <div align="right"><font size="2" class="_mt">(7,768)</font></div><font size="2" class="_mt"> </font></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td> <div align="right"><font size="2" class="_mt">$</font></div></td> <td><font size="2" class="_mt"> </font> <div align="right"><font size="2" class="_mt">(6,925)</font></div><font size="2" class="_mt"> </font></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td> <div align="right"><font size="2" class="_mt">$</font></div></td> <td><font size="2" class="_mt"> </font> <div align="right"><font size="2" class="_mt">(7,971)</font></div><font size="2" class="_mt"> </font></td></tr></table> </div> 10 7 9 7 62.75 62.75 47.76 62.75 456000000 515000000 959000000 965000000 6000000 6000000 16000000 21000000 <div> <div style="font-size: 20px;"> <p align="left"><strong><font size="2" class="_mt">6.&nbsp;&nbsp;Investments</font></strong></p><font size="2" class="_mt"> </font> <table style="font-size: 20px;" width="897"> <tr><td><font size="2" class="_mt">&nbsp;</font></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td><font size="2" class="_mt">&nbsp;</font></td></tr> <tr><td><font size="2" class="_mt">&nbsp;</font></td> <td colspan="3"> <div align="center"><strong><font size="2" class="_mt">March 31,</font></strong></div></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td colspan="5"> <div align="center"><strong><font size="2" class="_mt">December 31,</font></strong></div></td></tr> <tr><td><font size="2" class="_mt">&nbsp;</font></td> <td colspan="3"> <div align="center"><u><strong><font size="2" class="_mt">2011</font></strong></u></div></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td colspan="5"> <div align="center"><u><strong><font size="2" class="_mt">2010</font></strong></u></div></td></tr> <tr><td><font size="2" class="_mt">&nbsp;</font></td> <td colspan="9"> <div align="center"><em><font size="2" class="_mt">($ in millions)&nbsp;&nbsp;&nbsp;&nbsp;</font></em></div></td></tr> <tr><td><font size="2" class="_mt">&nbsp;</font></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td><font size="2" class="_mt">&nbsp;</font></td></tr> <tr><td width="531"><font size="2" class="_mt">Short-term investments with average remaining maturities:</font></td> <td width="20"><font size="2" class="_mt">&nbsp;</font></td> <td width="60"><font size="2" class="_mt">&nbsp;</font></td> <td width="20"><font size="2" class="_mt">&nbsp;</font></td> <td width="20"><font size="2" class="_mt">&nbsp;</font></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td><font size="2" class="_mt">&nbsp;</font></td></tr> <tr><td><font size="2" class="_mt">&nbsp;&nbsp;Available-for-sale:</font></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td width="20"><font size="2" class="_mt">&nbsp;</font></td> <td width="20"><font size="2" class="_mt">&nbsp;</font></td> <td width="60"><font size="2" class="_mt">&nbsp;</font></td> <td width="20"><font size="2" class="_mt">&nbsp;</font></td> <td width="20"><font size="2" class="_mt">&nbsp;</font></td></tr> <tr><td><font size="2" class="_mt">&nbsp;&nbsp;&nbsp;Certificates of deposit,&nbsp;<font class="_mt">4</font> and&nbsp;<font class="_mt">5</font> months, respectively</font></td> <td> <div align="right"><font size="2" class="_mt">$</font></div></td> <td> <div align="right"><font size="2" class="_mt">56</font></div></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td> <div align="right"><font size="2" class="_mt">$</font></div></td> <td> <div align="right"><font size="2" class="_mt">76</font></div></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td><font size="2" class="_mt">&nbsp;</font></td></tr> <tr><td><font size="2" class="_mt">&nbsp;&nbsp;&nbsp;Corporate bonds,&nbsp;<font class="_mt">2</font> and&nbsp;<font class="_mt">4</font> months, respectively</font></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td> <div align="right"><font size="2" class="_mt">38</font></div></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td> <div align="right"><font size="2" class="_mt">64</font></div></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td><font size="2" class="_mt">&nbsp;</font></td></tr> <tr><td><font size="2" class="_mt">&nbsp;&nbsp;&nbsp;Commercial paper,&nbsp;<font class="_mt">2</font> and&nbsp;<font class="_mt">4</font> months, respectively</font></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td> <div style="border-left-color: #000; border-top-color: #000; border-bottom: #000 thin solid; border-right-color: #000;" align="right"><font size="2" class="_mt">25</font></div></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td> <div style="border-left-color: #000; border-top-color: #000; border-bottom: #000 thin solid; border-right-color: #000;" align="right"><font size="2" class="_mt">35</font></div></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td><font size="2" class="_mt">&nbsp;</font></td></tr> <tr><td><font size="2" class="_mt">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Total available-for-sale</font></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td> <div style="border-left-color: #000; border-top-color: #000; border-bottom: #000 thin solid; border-right-color: #000;" align="right"><font size="2" class="_mt">119</font></div></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td> <div style="border-left-color: #000; border-top-color: #000; border-bottom: #000 thin solid; border-right-color: #000;" align="right"><font size="2" class="_mt">175</font></div></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td><font size="2" class="_mt">&nbsp;</font></td></tr> <tr><td><font size="2" class="_mt">&nbsp;&nbsp;Held-to-maturity:</font></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td><font size="2" class="_mt">&nbsp;</font></td></tr> <tr><td><font size="2" class="_mt">&nbsp;&nbsp;&nbsp;Federal government bonds,&nbsp;<font class="_mt">7</font> and&nbsp;<font class="_mt">9</font> months, respectively</font></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td> <div align="right"><font size="2" class="_mt">74</font></div></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td> <div align="right"><font size="2" class="_mt">49</font></div></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td><font size="2" class="_mt">&nbsp;</font></td></tr> <tr><td><font size="2" class="_mt">&nbsp;&nbsp;&nbsp;Corporate bonds,&nbsp;<font class="_mt"><font class="_mt">7</font> </font>and&nbsp;<font class="_mt">10</font> months, respectively</font></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td> <div style="border-left-color: #000; border-top-color: #000; border-bottom: #000 thin solid; border-right-color: #000;" align="right"><font size="2" class="_mt">59</font></div></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td> <div style="border-left-color: #000; border-top-color: #000; border-bottom: #000 thin solid; border-right-color: #000;" align="right"><font size="2" class="_mt">59</font></div></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td><font size="2" class="_mt">&nbsp;</font></td></tr> <tr><td><font size="2" class="_mt">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Total held-to-maturity</font></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td> <div style="border-left-color: #000; border-top-color: #000; border-bottom: #000 thin solid; border-right-color: #000;" align="right"><font size="2" class="_mt">133</font></div></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td> <div style="border-left-color: #000; border-top-color: #000; border-bottom: #000 thin solid; border-right-color: #000;" align="right"><font size="2" class="_mt">108</font></div></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td><font size="2" class="_mt">&nbsp;</font></td></tr> <tr><td><font size="2" class="_mt">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Total short-term investments</font></td> <td> <div align="right"><font size="2" class="_mt">$</font></div></td> <td> <div style="border-bottom: double;" align="right"><font size="2" class="_mt">252</font></div></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td> <div align="right"><font size="2" class="_mt">$</font></div></td> <td> <div style="border-bottom: double;" align="right"><font size="2" class="_mt">283</font></div></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td><font size="2" class="_mt">&nbsp;</font></td></tr></table><font size="2" class="_mt"><br /></font> <p><strong><font size="2" class="_mt">Investment in Conrail</font></strong></p> <p align="left"><font size="2" class="_mt">Through a limited liability company, Norfolk Southern and CSX Corporation (CSX) jointly own Conrail Inc. (Conrail), whose primary subsidiary is Consolidated Rail Corporation (CRC).&nbsp;&nbsp;NS has a <font class="_mt">58</font>% economic and <font class="_mt">50</font>% voting interest in the jointly owned entity, and CSX has the remainder of the economic and voting interests.&nbsp;&nbsp;NS' investment in Conrail was $<font class="_mt">965</font> million at March 31, 2011, and $<font class="_mt">959</font> million at December 31, 2010. </font></p> <p align="left"><font size="2" class="_mt">CRC owns and operates certain properties (the Shared Assets Areas) for the joint and exclusive benefit of Norfolk Southern Railway Company (NSR) and CSX Transportation, Inc. (CSXT).&nbsp;&nbsp;The costs of operating the Shared Assets Areas are borne by NSR and CSXT based on usage.&nbsp;&nbsp;In addition, NSR and CSXT pay CRC a fee for access to the Shared Assets Areas.&nbsp;&nbsp;"Purchased services and rents" and "Fuel" include expenses for the use of the Shared Assets Areas totaling $<font class="_mt">33</font> million for the first quarter of 2011 and $<font class="_mt">29</font> million for the first quarter of 2010.&nbsp;&nbsp;NS' equity in the earnings of Conrail, net of amortization, included in "Other income &ndash; net" was $<font class="_mt">6</font> million for the first quarters of 2011 and 2010.</font></p> <p align="left"><font size="2" class="_mt">"Accounts payable" includes $<font class="_mt">140</font> million at March 31, 2011, and $<font class="_mt">128</font> million at December 31, 2010, due to Conrail for the operation of the Shared Assets Areas.&nbsp;&nbsp;In addition, "Other liabilities" includes $<font class="_mt">133</font> million at both March 31, 2011 and December 31, 2010, for long-term advances from Conrail, maturing <font class="_mt">2035</font>, that bear interest at an average rate of <font class="_mt">4.4</font>%.</font></p></div> </div> 2035 4 191000000 272000000 169000000 190000000 27000000 <div> <table style="font-size: 20px;"> <tr><td width="530"><font size="2" class="_mt">Expected volatility range</font></td> <td width="105"> <div align="right"><font size="2" class="_mt"><font class="_mt">28</font>% - <font class="_mt">32</font>%</font></div></td></tr> <tr><td><font size="2" class="_mt">Average expected volatility</font></td> <td> <div align="right"><font size="2" class="_mt">28%</font></div></td></tr> <tr><td><font size="2" class="_mt">Average expected option life</font></td> <td> <div align="right"><font size="2" class="_mt">8.5 years</font></div></td></tr> <tr><td><font size="2" class="_mt">Average risk-free interest rate</font></td> <td> <div align="right"><font size="2" class="_mt">3.42%</font></div></td></tr> <tr><td><font size="2" class="_mt">LTIP per-share grant-date fair value</font></td> <td> <div align="right"><font size="2" class="_mt">$22.26</font></div></td></tr> <tr><td><font size="2" class="_mt">TSOP per-share grant-date fair value</font></td> <td> <div align="right"><font size="2" class="_mt">$18.10</font></div></td></tr></table> </div> 0 0 15000000 147000000 104000000 0.50 0.50 0.50 0.50 851893 850595 12000000 20000000 335000000 383000000 five 286709 0 -2000000 -1000000 <div> <table style="font-size: 20px;"> <tr><td><font size="2" class="_mt">&nbsp;</font></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td><font size="2" class="_mt">&nbsp;</font></td></tr> <tr><td><font size="2" class="_mt">&nbsp;</font></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td colspan="10"> <div align="center"><strong><font size="2" class="_mt">Three months ended March 31,</font></strong></div></td></tr> <tr><td width="389"><font size="2" class="_mt">&nbsp;</font></td> <td width="20"><font size="2" class="_mt">&nbsp;</font></td> <td width="60"> <div align="center"><u><strong><font size="2" class="_mt">2011</font></strong></u></div></td> <td width="20"><font size="2" class="_mt">&nbsp;</font></td> <td width="20"><font size="2" class="_mt">&nbsp;</font></td> <td width="60"> <div align="center"><u><strong><font size="2" class="_mt">2010</font></strong></u></div></td> <td width="20"><font size="2" class="_mt">&nbsp;</font></td> <td width="20"><font size="2" class="_mt">&nbsp;</font></td> <td width="60"> <div align="center"><u><strong><font size="2" class="_mt">2011</font></strong></u></div></td> <td width="20"><font size="2" class="_mt">&nbsp;</font></td> <td width="20"><font size="2" class="_mt">&nbsp;</font></td> <td width="60"> <div align="center"><u><strong><font size="2" class="_mt">2010</font></strong></u></div></td></tr> <tr><td><font size="2" class="_mt">&nbsp;</font></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td colspan="4"> <div align="center"><u><strong><font size="2" class="_mt">Pension Benefits</font></strong></u></div></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td colspan="4"> <div align="center"><u><strong><font size="2" class="_mt">Other Benefits</font></strong></u></div></td></tr> <tr><td><font size="2" class="_mt">&nbsp;</font></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td colspan="4"> <div align="center"><em><font size="2" class="_mt">($ in millions)</font></em></div></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td><font size="2" class="_mt">&nbsp;</font></td></tr> <tr><td><font size="2" class="_mt">&nbsp;</font></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td><font size="2" class="_mt">&nbsp;</font></td></tr> <tr><td><font size="2" class="_mt">Service cost</font></td> <td> <div align="right"><font size="2" class="_mt">$</font></div></td> <td> <div align="right"><font size="2" class="_mt">7&nbsp;</font></div></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td> <div align="right"><font size="2" class="_mt">$</font></div></td> <td> <div align="right"><font size="2" class="_mt">7&nbsp;</font></div></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td> <div align="right"><font size="2" class="_mt">$</font></div></td> <td> <div align="right"><font size="2" class="_mt">4&nbsp;</font></div></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td> <div align="right"><font size="2" class="_mt">$</font></div></td> <td> <div align="right"><font size="2" class="_mt">4&nbsp;</font></div></td></tr> <tr><td><font size="2" class="_mt">Interest cost</font></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td> <div align="right"><font size="2" class="_mt">23&nbsp;</font></div></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td> <div align="right"><font size="2" class="_mt">24&nbsp;</font></div></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td> <div align="right"><font size="2" class="_mt">15&nbsp;</font></div></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td> <div align="right"><font size="2" class="_mt">15&nbsp;</font></div></td></tr> <tr><td><font size="2" class="_mt">Expected return on plan assets</font></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td> <div align="right"><font size="2" class="_mt">(35)</font></div></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td> <div align="right"><font size="2" class="_mt">(36)</font></div></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td> <div align="right"><font size="2" class="_mt">(4)</font></div></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td> <div align="right"><font size="2" class="_mt">(4)</font></div></td></tr> <tr><td><font size="2" class="_mt">Amortization of net losses</font></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td> <div align="right"><font size="2" class="_mt">17&nbsp;</font></div></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td> <div align="right"><font size="2" class="_mt">12&nbsp;</font></div></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td> <div align="right"><font size="2" class="_mt">11&nbsp;</font></div></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td> <div align="right"><font size="2" class="_mt">12&nbsp;</font></div></td></tr> <tr><td><font size="2" class="_mt">Amortization of prior service cost</font></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td> <div style="border-bottom: thin solid;" align="right"><font size="2" class="_mt">-&nbsp;</font></div></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td> <div style="border-bottom: thin solid;" align="right"><font size="2" class="_mt">1&nbsp;</font></div></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td> <div style="border-bottom: thin solid;" align="right"><font size="2" class="_mt">-&nbsp;</font></div></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td> <div style="border-bottom: thin solid;" align="right"><font size="2" class="_mt">-&nbsp;</font></div></td></tr> <tr><td><font size="2" class="_mt">&nbsp;&nbsp;&nbsp;&nbsp;Net cost</font></td> <td> <div align="right"><font size="2" class="_mt">$</font></div></td> <td> <div style="border-bottom: double;" align="right"><font size="2" class="_mt">12&nbsp;</font></div></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td> <div align="right"><font size="2" class="_mt">$</font></div></td> <td> <div style="border-bottom: double;" align="right"><font size="2" class="_mt">8&nbsp;</font></div></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td> <div align="right"><font size="2" class="_mt">$</font></div></td> <td> <div style="border-bottom: double;" align="right"><font size="2" class="_mt">26&nbsp;</font></div></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td> <div align="right"><font size="2" class="_mt">$</font></div></td> <td> <div style="border-bottom: double;" align="right"><font size="2" class="_mt">27&nbsp;</font></div></td></tr></table> </div> <div> <table style="font-size: 20px;" border="0" width="986"> <tr><td><font size="2" class="_mt">&nbsp;</font></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td><font size="2" class="_mt">&nbsp;</font></td></tr> <tr><td><font size="2" class="_mt">&nbsp;</font></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td colspan="10"> <div align="center"><strong><font size="2" class="_mt">Three months ended March 31,</font></strong></div></td></tr> <tr><td><font size="2" class="_mt">&nbsp;</font></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td width="61"> <div align="center"><u><strong><font size="2" class="_mt">2011</font></strong></u></div></td> <td width="18"><font size="2" class="_mt">&nbsp;</font></td> <td width="18"><font size="2" class="_mt">&nbsp;</font></td> <td width="61"> <div align="center"><u><strong><font size="2" class="_mt">2010</font></strong></u></div></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td width="61"> <div align="center"><u><strong><font size="2" class="_mt">2011</font></strong></u></div></td> <td width="18"><font size="2" class="_mt">&nbsp;</font></td> <td width="18"><font size="2" class="_mt">&nbsp;</font></td> <td width="61"> <div align="center"><u><strong><font size="2" class="_mt">2010</font></strong></u></div></td></tr> <tr><td width="524"><font size="2" class="_mt">&nbsp;</font></td> <td width="19"><font size="2" class="_mt">&nbsp;</font></td> <td colspan="4"> <div style="border-bottom: thin solid;" align="center"><strong><font size="2" class="_mt">Basic</font></strong></div></td> <td width="18"><font size="2" class="_mt">&nbsp;</font></td> <td width="18"><font size="2" class="_mt">&nbsp;</font></td> <td colspan="4"> <div style="border-bottom: thin solid;" align="center"><strong><font size="2" class="_mt">Diluted</font></strong></div></td></tr> <tr><td><font size="2" class="_mt">&nbsp;</font></td> <td colspan="8"><em><font size="2" class="_mt">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;($ in millions except per share, shares in millions)</font></em></td></tr> <tr><td><font size="2" class="_mt">&nbsp;</font></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td><font size="2" class="_mt">&nbsp;</font></td></tr> <tr><td><font size="2" class="_mt">Net income</font></td> <td> <div align="right"><font size="2" class="_mt">$</font></div></td> <td> <div align="right"><font size="2" class="_mt">325&nbsp;</font></div></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td> <div align="right"><font size="2" class="_mt">$</font></div></td> <td> <div align="right"><font size="2" class="_mt">257&nbsp;</font></div></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td> <div align="right"><font size="2" class="_mt">$</font></div></td> <td> <div align="right"><font size="2" class="_mt">325&nbsp;</font></div></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td> <div align="right"><font size="2" class="_mt">$</font></div></td> <td> <div align="right"><font size="2" class="_mt">257&nbsp;</font></div></td></tr> <tr><td><font size="2" class="_mt">Dividend equivalent payments</font></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td> <div style="border-bottom: thin solid;" align="right"><font size="2" class="_mt">(2)</font></div></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td> <div style="border-bottom: thin solid;" align="right"><font size="2" class="_mt">(2)</font></div></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td> <div style="border-bottom: thin solid;" align="right"><font size="2" class="_mt">(2)</font></div></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td> <div style="border-bottom: thin solid;" align="right"><font size="2" class="_mt">(2)</font></div></td></tr> <tr><td><font size="2" class="_mt">Income available to common stockholders</font></td> <td> <div align="right"><font size="2" class="_mt">$</font></div></td> <td><font size="2" class="_mt"> </font> <div align="right"><font size="2" class="_mt">323&nbsp;</font></div><font size="2" class="_mt"> </font></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td> <div align="right"><font size="2" class="_mt">$</font></div></td> <td><font size="2" class="_mt"> </font> <div align="right"><font size="2" class="_mt">255&nbsp;</font></div><font size="2" class="_mt"> </font></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td> <div align="right"><font size="2" class="_mt">$</font></div></td> <td><font size="2" class="_mt"> </font> <div align="right"><font size="2" class="_mt">323&nbsp;</font></div><font size="2" class="_mt"> </font></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td> <div align="right"><font size="2" class="_mt">$</font></div></td> <td><font size="2" class="_mt"> </font> <div align="right"><font size="2" class="_mt">255&nbsp;</font></div><font size="2" class="_mt"> </font></td></tr> <tr><td><font size="2" class="_mt">&nbsp;</font></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td><font size="2" class="_mt">&nbsp;</font></td></tr> <tr><td><font size="2" class="_mt">Weighted-average shares outstanding</font></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td> <div style="border-bottom: thin solid;" align="right"><font size="2" class="_mt">355.2&nbsp;</font></div></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td> <div style="border-bottom: thin solid;" align="right"><font size="2" class="_mt">369.5&nbsp;</font></div></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td><font size="2" class="_mt"> </font> <div align="right"><font size="2" class="_mt">355.2&nbsp;</font></div><font size="2" class="_mt"> </font></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td><font size="2" class="_mt"> </font> <div align="right"><font size="2" class="_mt">369.5&nbsp;</font></div><font size="2" class="_mt"> </font></td></tr> <tr><td><font size="2" class="_mt">Dilutive effect of outstanding options and share-settled awards</font></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td> <div style="border-bottom: thin solid;" align="right"><font size="2" class="_mt">5.3&nbsp;</font></div></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td> <div style="border-bottom: thin solid;" align="right"><font size="2" class="_mt">5.4&nbsp;</font></div></td></tr> <tr><td><font size="2" class="_mt">Adjusted weighted-average shares outstanding</font></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td> <div style="border-bottom: thin solid;" align="right"><font size="2" class="_mt">360.5&nbsp;</font></div></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td> <div style="border-bottom: thin solid;" align="right"><font size="2" class="_mt">374.9&nbsp;</font></div></td></tr> <tr><td><font size="2" class="_mt">Earnings per share</font></td> <td> <div align="right"><font size="2" class="_mt">$</font></div></td> <td><font size="2" class="_mt"> </font> <div style="border-bottom: double;" align="right"><font size="2" class="_mt">0.91&nbsp;</font></div><font size="2" class="_mt"> </font></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td> <div align="right"><font size="2" class="_mt">$</font></div></td> <td><font size="2" class="_mt"> </font> <div style="border-bottom: double;" align="right"><font size="2" class="_mt">0.69&nbsp;</font></div><font size="2" class="_mt"> </font></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td> <div align="right"><font size="2" class="_mt">$</font></div></td> <td><font size="2" class="_mt"> </font> <div style="border-bottom: double;" align="right"><font size="2" class="_mt">0.90&nbsp;</font></div><font size="2" class="_mt"> </font></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td> <div align="right"><font size="2" class="_mt">$</font></div></td> <td><font size="2" class="_mt"> </font> <div style="border-bottom: double;" align="right"><font size="2" class="_mt">0.68&nbsp;</font></div><font size="2" class="_mt"> </font></td></tr></table> </div> 1000000000 50000000 175000000 25000000 40000000 42000000 0.0255 0.00 0.32 0.28 0.28 22.26 18.10 49.56 50.47 34.10 13000000 14000000 62.75 84700000 4500000000 <div> <div style="font-size: 20px;"> <p align="left"><strong><font size="2" class="_mt">5.&nbsp;&nbsp;Stock Repurchase Program</font></strong></p> <p align="left"><font size="2" class="_mt">NS repurchased and retired&nbsp;<font class="_mt">5.3</font> million shares of Common Stock in the first quarter of 2011, at a cost of $<font class="_mt">343</font> million. There were no shares repurchased under this program in the first quarter of 2010.&nbsp;&nbsp;The timing and volume of purchases is guided by management's assessment of market conditions and other pertinent factors.&nbsp;&nbsp;Any near-term share repurchases are expected to be made with internally generated cash, cash on hand, or proceeds from borrowings.&nbsp;&nbsp;Since 2005, NS has repurchased and retired&nbsp;<font class="_mt">84.7</font> million shares at a total cost of $<font class="_mt">4.5</font> billion.</font></p><br /><br /></div> </div> 1000000 2000000 40000000 276000000 344000000 1181000000 1093000000 807000000 934000000 33000000 32000000 12000000 12000000 9262000000 9386000000 -805000000 -786000000 1892000000 1939000000 28199000000 27728000000 2471000000 1832000000 175000000 119000000 64000000 76000000 35000000 38000000 56000000 25000000 175000000 119000000 996000000 1161000000 827000000 236000000 165000000 -591000000 827000000 236000000 <div> <div style="font-size: 20px;"> <p><strong><font size="2" class="_mt">10.&nbsp;&nbsp;Commitments and Contingencies</font></strong></p> <p align="left"><strong><font size="2" class="_mt">Lawsuits</font></strong></p> <p align="left"><font size="2" class="_mt">Norfolk Southern and/or certain subsidiaries are defendants in numerous lawsuits and other claims relating principally to railroad operations.&nbsp;&nbsp;When management concludes that it is probable that a liability has been incurred and the amount of the liability can be reasonably estimated, it is accrued through a charge to earnings.&nbsp;&nbsp;While the ultimate amount of liability incurred in any of these lawsuits and claims is dependent on future developments, in management's opinion, the recorded liability is adequate to cover the future payment of such liability and claims.&nbsp;&nbsp;However, the final outcome of any of these lawsuits and claims cannot be predicted with certainty, and unfavorable or unexpected outcomes could result in additional accruals that could be significant to results of operations in a particular year or quarter.&nbsp;&nbsp;Any adjustments to the recorded liability will be reflected in earnings in the periods in which such adjustments are known.</font></p> <p align="left"><font size="2" class="_mt">Two of NS' customers, DuPont and South Mississippi Electric Power Association (SMEPA), have filed rate reasonableness complaints at the Surface Transportation Board (STB) alleging that the NS tariff rates for transportation of regulated movements are unreasonable.&nbsp;&nbsp;NS is disputing these allegations.&nbsp;&nbsp;Since June 1, 2009, in the case of DuPont, and since January 1, 2011, in the case of SMEPA, NS has been billing and collecting amounts from the customers based on the challenged tariff rates.&nbsp;&nbsp;Management presently expects resolution of these cases to occur in late 2012 or 2013.&nbsp;&nbsp;The cases have not progressed to a point where management can provide an estimate of the possible loss or range of loss, if any.</font></p> <p align="left"><strong><font size="2" class="_mt">Casualty Claims</font></strong></p> <p align="left"><font size="2" class="_mt">Casualty claims include employee personal injury and occupational claims as well as third-party claims, all exclusive of legal costs.&nbsp;&nbsp;To aid in valuing its personal injury liability and determining the amount to accrue with respect to such claim during the year, NS' management utilizes studies prepared by an independent consulting actuarial firm.&nbsp;&nbsp;Job-related accidental injury and occupational claims are subject to the Federal Employers' Liability Act (FELA), which is applicable only to railroads.&nbsp;&nbsp;FELA's fault-based system produces results that are unpredictable and inconsistent as compared with a no-fault workers' compensation system.&nbsp;&nbsp;The variability inherent in this system could result in actual costs being different from the liability recorded.&nbsp;&nbsp;While the ultimate amount of claims incurred is dependent on future developments, in management's opinion, the recorded liability is adequate to cover the future payments of claims and is supported by the most recent actuarial study.&nbsp;&nbsp;In all cases, NS records a liability when the expected loss for the claim is both probable and estimable.</font></p> <p align="left"><font size="2" class="_mt">The Consolidated Balance Sheets reflect long-term receivables for estimated recoveries from NS' insurance carriers for claims associated with the January 6, 2005, derailment in Graniteville, S.C.&nbsp;&nbsp;During the first quarter of 2010, NS settled an arbitration claim ($<font class="_mt">100</font> million) with one of its insurance carriers with no adverse effect on NS' financial position, results of operations, or liquidity.&nbsp;&nbsp;In March 2011, NS received an unfavorable ruling for an arbitration claim with another insurance carrier, and was denied recovery of the contested portion ($<font class="_mt">43</font> million) of the claim.&nbsp;&nbsp;As a result, NS recorded a $<font class="_mt">43</font> million expense during the first quarter of 2011 for the receivables associated with the contested portion of the claim and a $<font class="_mt">15</font> million expense for other receivables affected by the ruling for which recovery is no longer probable.</font></p> <p align="left"><font size="2" class="_mt"><strong>Employee personal injury claims</strong> &ndash; The largest component of casualties and other claims expense is employee personal injury costs.&nbsp;&nbsp;The independent actuarial firm engaged by NS provides quarterly studies to aid in valuing its employee personal injury liability and estimating its employee personal injury expense.&nbsp;&nbsp;The independent actuarial firm studies NS' historical patterns of reserving for claims and subsequent settlements, taking into account relevant outside influences.&nbsp;&nbsp;The actuary uses the results of these analyses to estimate the ultimate amount of liability, which includes amounts for incurred but unasserted claims.&nbsp;&nbsp;NS adjusts its liability quarterly based upon management's assessment and the results of the study.&nbsp;&nbsp;The estimate of loss liabilities is subject to inherent limitation given the difficulty of predicting future events such as jury decisions, court interpretations, or legislative changes and as such the actual loss may vary from the estimated liability recorded.</font></p><font size="2" class="_mt"><strong>Occupational claims</strong> &ndash; Occupational claims (including asbestosis and other respiratory diseases, as well as conditions allegedly related to repetitive motion) are often not caused by a specific accident or event but rather allegedly result from a claimed exposure over time.&nbsp;&nbsp;Many such claims are being asserted by former or retired employees, some of whom have not been employed in the rail industry for decades.&nbsp;&nbsp;The independent actuarial firm provides an estimate of the occupational claims liability based upon NS' history of claim filings, severity, payments, and other pertinent facts.&nbsp;&nbsp;The liability is dependent upon management's judgments made as to the specific case reserves as well as judgments of the consulting independent actuarial firm in the periodic studies.&nbsp;&nbsp;The independent actuarial firm's estimate of ultimate loss includes a provision for those claims that have been incurred but not reported.&nbsp;&nbsp;This provision is derived by analyzing industry data and projecting NS' experience into the future as far as can be reasonably determined.&nbsp;&nbsp;NS adjusts its liability quarterly based upon management's assessment and the results of the study.&nbsp;&nbsp;However, it is possible that the recorded liability may not be adequate to cover the future payment of claims.&nbsp;&nbsp;Adjustments to the recorded liability are reflected in operating expenses in the periods in which such adjustments become known. </font> <p><font size="2" class="_mt"><strong>Third-party claims</strong> &ndash; NS records a liability for third-party claims including those for highway crossing accidents, trespasser and other injuries, automobile liability, property damage, and lading damage.&nbsp;&nbsp;The independent actuarial firm assists with the calculation of potential liability for third-party claims, except lading damage, based upon NS' experience including number and timing of incidents, amount of payments, settlement rates, number of open claims, and legal defenses.&nbsp;&nbsp;The actuarial estimate includes a provision for claims that have been incurred but have not yet been reported.&nbsp;&nbsp;Each quarter NS adjusts its liability based upon management's assessment and the results of the study.&nbsp;&nbsp;Given the inherent uncertainty in regard to the ultimate outcome of third-party claims, it is possible that the actual loss may differ from the estimated liability recorded.</font></p> <p align="left"><strong> </strong><font size="2" class="_mt"><strong>Environmental Matters</strong> </font></p> <p align="left"><font size="2" class="_mt">NS is subject to various jurisdictions' environmental laws and regulations.&nbsp;&nbsp;It is NS' policy to record a liability where such liability or loss is probable and its amount can be estimated reasonably.&nbsp;&nbsp;Claims, if any, against third parties, for recovery of cleanup costs incurred by NS are reflected as receivables (when collection is probable) in the Consolidated Balance Sheets and are not netted against the associated NS liability.&nbsp;&nbsp;Environmental engineers regularly participate in ongoing evaluations of all known sites and in determining any necessary adjustments to liability estimates.&nbsp;&nbsp;NS also has an Environmental Policy Council, composed of senior managers, to oversee and interpret its environmental policy.</font></p> <p align="left"><font size="2" class="_mt">NS' Consolidated Balance Sheets include liabilities for environmental exposures of $<font class="_mt">32</font> million at March 31, 2011, and $<font class="_mt">33</font> million at December 31, 2010 (of which $<font class="_mt">12</font> million is classified as a current liability at the end of each period).&nbsp;&nbsp;At March 31, 2011, the liability represents NS' estimate of the probable cleanup and remediation costs based on available information at&nbsp;<font class="_mt">142</font> known locations.&nbsp;&nbsp;As of that date,&nbsp;<font class="_mt">nine</font> sites accounted for $<font class="_mt">13</font> million of the liability, and no individual site was considered to be material.&nbsp;&nbsp;NS anticipates that much of this liability will be paid out over&nbsp;<font class="_mt">five</font> years; however, some costs will be paid out over a longer period.</font></p> <p align="left"><font size="2" class="_mt">At&nbsp;<font class="_mt">30</font> locations, one or more Norfolk Southern subsidiaries, usually in conjunction with a number of other parties, have been identified as potentially responsible parties by the Environmental Protection Agency (EPA) or similar state authorities under the Comprehensive Environmental Response, Compensation and Liability Act of 1980, or comparable state statutes, which often impose joint and several liability for cleanup costs. </font></p> <p align="left"><font size="2" class="_mt">With respect to known environmental sites (whether identified by NS or by the EPA or comparable state authorities), estimates of NS' ultimate potential financial exposure for a given site or in the aggregate for all such sites are necessarily imprecise because of the widely varying costs of currently available cleanup techniques, the likely development of new cleanup technologies, the difficulty of determining in advance the nature and full extent of contamination and each potential participant's share of any estimated loss (and that participant's ability to bear it), and evolving statutory and regulatory standards governing liability.</font></p> <p><font size="2" class="_mt">The risk of incurring environmental liability &ndash; for acts and omissions, past, present, and future &ndash; is inherent in the railroad business.&nbsp;&nbsp;Some of the commodities in NS' traffic mix, particularly those classified as hazardous materials, pose special risks that NS and its subsidiaries work diligently to minimize.&nbsp;&nbsp;In addition, several NS subsidiaries own, or have owned, land used as operating property, or which is leased and operated by others, or held for sale.&nbsp;&nbsp;Because environmental problems may exist on these properties that are latent or undisclosed, there can be no assurance that NS will not incur environmental liabilities or costs with respect to one or more of them, the amount and materiality of which cannot be estimated reliably at this time.&nbsp;&nbsp;Moreover, lawsuits and claims involving these and potentially other unidentified environmental sites and matters are likely to arise from time to time.&nbsp;&nbsp;The resulting liabilities could have a significant effect on financial position, results of operations, or liquidity in a particular year or quarter.</font></p> <p align="left"><font size="2" class="_mt">Based on its assessment of the facts and circumstances now known, management believes that it has recorded the probable costs for dealing with those environmental matters of which NS is aware.&nbsp;&nbsp;Further, management believes that it is unlikely that any known matters, either individually or in the aggregate, will have a material adverse effect on NS' financial position, results of operations, or liquidity.</font></p> <p align="left"><strong><font size="2" class="_mt">Insurance</font></strong></p> <p align="left"><font size="2" class="_mt">Norfolk Southern obtains on behalf of itself and its subsidiaries insurance for potential losses for third-party liability and first-party property damages.&nbsp;&nbsp;NS is currently self-insured up to $<font class="_mt">50</font> million and above $<font class="_mt">1</font> billion per occurrence for bodily injury and property damage to third parties and up to $<font class="_mt">25</font> million and above $<font class="_mt">175</font> million per occurrence for property owned by NS or in NS' care, custody, or control.</font></p> <p align="left"><strong><font size="2" class="_mt">Purchase Commitments</font></strong></p> <p align="left"><font size="2" class="_mt">At March 31, 2011, NS had outstanding purchase commitments totaling approximately $<font class="_mt">1.2</font> billion for long-term service contracts through 2019 as well as locomotives, track material, RoadRailer&#174; trailers, and freight cars, in connection with its capital programs through 2014.</font></p></div> </div> 0.34 0.4 1 1 1350000000 1350000000 357362604 353216661 358000000 354000000 <div> <p align="left"><strong><font size="2" class="_mt">8.&nbsp;&nbsp;Comprehensive Income</font></strong></p><font size="2" class="_mt"> </font> <table style="font-size: 20px;"> <tr><td><font size="2" class="_mt">&nbsp;</font></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td><font size="2" class="_mt">&nbsp;</font></td></tr> <tr><td><font size="2" class="_mt">&nbsp;</font></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td colspan="4"> <div align="center"><strong><font size="2" class="_mt">Three Months Ended</font></strong></div></td></tr> <tr><td><font size="2" class="_mt">&nbsp;</font></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td colspan="4"> <div align="center"><strong><font size="2" class="_mt">March 31,</font></strong></div></td></tr> <tr><td width="390"><font size="2" class="_mt">&nbsp;</font></td> <td width="20"><font size="2" class="_mt">&nbsp;</font></td> <td width="61"> <div align="center"><u><strong><font size="2" class="_mt">2011</font></strong></u></div></td> <td width="20"><font size="2" class="_mt">&nbsp;</font></td> <td width="20"><font size="2" class="_mt">&nbsp;</font></td> <td width="61"> <div align="center"><u><strong><font size="2" class="_mt">2010</font></strong></u></div></td></tr> <tr><td><font size="2" class="_mt">&nbsp;</font></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td colspan="4"> <div align="center"><em><font size="2" class="_mt">($ in millions)</font></em></div></td></tr> <tr><td><font size="2" class="_mt">&nbsp;</font></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td><font size="2" class="_mt">&nbsp;</font></td></tr> <tr><td><font size="2" class="_mt">Net income</font></td> <td> <div align="right"><font size="2" class="_mt">$</font></div></td> <td><font size="2" class="_mt"> </font> <div align="right"><font size="2" class="_mt">325</font></div><font size="2" class="_mt"> </font></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td> <div align="right"><font size="2" class="_mt">$</font></div></td> <td><font size="2" class="_mt"> </font> <div align="right"><font size="2" class="_mt">257</font></div><font size="2" class="_mt"> </font></td></tr> <tr><td><font size="2" class="_mt">Other comprehensive income</font></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td><font size="2" class="_mt"> </font> <div style="border-bottom: thin solid;" align="right"><font size="2" class="_mt">19</font></div><font size="2" class="_mt"> </font></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td><font size="2" class="_mt"> </font> <div style="border-bottom: thin solid;" align="right"><font size="2" class="_mt">19</font></div><font size="2" class="_mt"> </font></td></tr> <tr><td><font size="2" class="_mt">&nbsp;</font></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td><font size="2" class="_mt">&nbsp;</font></td></tr> <tr><td><font size="2" class="_mt">&nbsp;&nbsp;&nbsp;&nbsp;Total comprehensive income</font></td> <td> <div align="right"><font size="2" class="_mt">$</font></div></td> <td><font size="2" class="_mt"> </font> <div style="border-bottom: double;" align="right"><font size="2" class="_mt">344</font></div><font size="2" class="_mt"> </font></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td> <div align="right"><font size="2" class="_mt">$</font></div></td> <td><font size="2" class="_mt"> </font> <div style="border-bottom: double;" align="right"><font size="2" class="_mt">276</font></div><font size="2" class="_mt"> </font></td></tr></table><font size="2" class="_mt"> </font> <p align="left"><font size="2" class="_mt">"Other comprehensive income" in 2011 and 2010 reflects primarily, net of tax, the amortization of the actuarial net losses and prior service cost for the pension and other postretirement benefit plans.</font></p> </div> 204000000 211000000 7971000000 7768000000 40000000 112000000 145000000 148000000 7088000000 7212000000 12000000 12000000 11000000 17000000 0 1000000 0 0 4000000 36000000 4000000 35000000 15000000 24000000 15000000 23000000 27000000 8000000 26000000 12000000 4000000 7000000 4000000 7000000 206000000 213000000 <div> <p align="left"><font size="2" class="_mt"><strong>1.&nbsp;&nbsp;Stock-Based Compensation</strong> </font></p> <p align="left"><font size="2" class="_mt">In the first quarter of 2011, a committee of non-employee directors of Norfolk Southern's Board of Directors granted stock options, restricted stock units and performance share units (PSUs) pursuant to the Long-Term Incentive Plan (LTIP) and granted stock options pursuant to the Thoroughbred Stock Option Plan (TSOP) as discussed below.&nbsp;&nbsp;Stock-based compensation expense was $<font class="_mt">42</font> million during the first quarter of 2011 and $<font class="_mt">40</font> million during the same period of 2010.&nbsp;&nbsp;The total tax effects recognized in income in relation to stock-based compensation were net benefits of $<font class="_mt">14</font> million and $<font class="_mt">13</font> million for the quarters ended March 31, 2011 and 2010, respectively.</font></p> <p align="left"><strong><font size="2" class="_mt">Stock Options</font></strong></p> <p><font size="2" class="_mt">In the first quarter of 2011,&nbsp;<font class="_mt">627,700</font> options were granted under the LTIP and&nbsp;<font class="_mt">257,000</font> options were granted under the TSOP.&nbsp;&nbsp;In each case, the grant price was $<font class="_mt">62.75</font>, which was the greater of the average fair market value of Norfolk Southern common stock (Common Stock) or the closing price of the Common Stock on the effective date of the grant, and the options have a term of&nbsp;<font class="_mt">ten</font> years.&nbsp;&nbsp;The options granted under the LTIP and TSOP in 2011 may not be exercised prior to the&nbsp;<font class="_mt">fourth</font> and&nbsp;<font class="_mt">third</font> anniversaries of the date of grant, respectively.&nbsp;&nbsp;Holders of the 2011 options granted under the LTIP who remain actively employed receive cash dividend equivalent payments for&nbsp;<font class="_mt">four</font> years in an amount equal to the regular quarterly dividends paid on Common Stock.&nbsp;&nbsp;Dividend equivalent payments are not made on TSOP options.</font></p> <p align="left"><font size="2" class="_mt">The fair value of each option award in 2011 was measured on the date of grant using a lattice-based option valuation model.&nbsp;&nbsp;Expected volatilities are based on implied volatilities from traded options on Common Stock and historical volatility of Common Stock.&nbsp;&nbsp;NS uses historical data to estimate option exercises and employee terminations within the valuation model.&nbsp;&nbsp;The average expected option life is derived from the output of the valuation model and represents the period of time that options granted are expected to be outstanding.&nbsp;&nbsp;The average risk-free interest rate is based on the U.S. Treasury yield curve in effect at the time of grant.&nbsp;&nbsp;A dividend yield of&nbsp;<font class="_mt">zero</font> was used for LTIP options during the four-year period in which dividend equivalent payments are made.&nbsp;&nbsp;A dividend yield of <font class="_mt">2.55</font>% was used for LTIP options for periods where no dividend equivalent payments are made as well as for TSOP options which do not receive dividend equivalents.&nbsp;&nbsp;The assumptions for the 2011 LTIP and TSOP grants are shown in the following table:</font></p><font size="2" class="_mt"> </font> <table style="font-size: 20px;"> <tr><td width="530"><font size="2" class="_mt">Expected volatility range</font></td> <td width="105"> <div align="right"><font size="2" class="_mt"><font class="_mt">28</font>% - <font class="_mt">32</font>%</font></div></td></tr> <tr><td><font size="2" class="_mt">Average expected volatility</font></td> <td> <div align="right"><font size="2" class="_mt">28%</font></div></td></tr> <tr><td><font size="2" class="_mt">Average expected option life</font></td> <td> <div align="right"><font size="2" class="_mt">8.5 years</font></div></td></tr> <tr><td><font size="2" class="_mt">Average risk-free interest rate</font></td> <td> <div align="right"><font size="2" class="_mt">3.42%</font></div></td></tr> <tr><td><font size="2" class="_mt">LTIP per-share grant-date fair value</font></td> <td> <div align="right"><font size="2" class="_mt">$22.26</font></div></td></tr> <tr><td><font size="2" class="_mt">TSOP per-share grant-date fair value</font></td> <td> <div align="right"><font size="2" class="_mt">$18.10</font></div></td></tr></table><font size="2" class="_mt"> </font> <p align="left"><font size="2" class="_mt">For the first three months of 2011, options relating to&nbsp;<font class="_mt">759,193</font> shares were exercised, yielding $<font class="_mt">20</font> million of cash proceeds and $<font class="_mt">10</font> million of tax benefit recognized as additional paid-in capital.&nbsp;&nbsp;For the first three months of 2010, options relating to&nbsp;<font class="_mt">592,110</font> shares were exercised yielding $<font class="_mt">12</font> million of cash proceeds and $<font class="_mt">7</font> million of tax benefit recognized as additional paid-in capital.</font></p> <p align="left"><strong><font size="2" class="_mt">Restricted Stock Units and Restricted Shares</font></strong></p> <p align="left"><font size="2" class="_mt">There were&nbsp;<font class="_mt">177,400</font> restricted stock units granted in 2011, with an average grant-date fair value of $<font class="_mt">62.75</font> and a <font class="_mt">five</font>-year restriction period.&nbsp;&nbsp;The restricted stock units granted in 2011 will be settled through the issuance of shares of Common Stock.</font></p> <p align="left"><font size="2" class="_mt">During the first quarter of 2011, no restricted stock units were earned and paid out.&nbsp;&nbsp;The total related tax benefit recognized as additional paid-in capital was less than $<font class="_mt">1</font> million in the first quarter of 2011.</font></p> <p align="left"><font size="2" class="_mt">During the first quarter of 2010,&nbsp;<font class="_mt">286,709</font> restricted stock units were earned and paid out in cash with a weighted average fair value of $<font class="_mt">48.88</font>.&nbsp;&nbsp;Also earned and distributed were&nbsp;<font class="_mt">433,236</font> restricted shares with a weighted-average grant-date fair value of $<font class="_mt">34.10</font>.&nbsp;&nbsp;The total related tax benefit recognized as additional paid-in capital was $<font class="_mt">2</font> million in the first quarter of 2010.</font></p> <p align="left"><strong><font size="2" class="_mt">Performance Share Units</font></strong></p> <p align="left"><font size="2" class="_mt">PSUs provide for awards based on achievement of certain predetermined corporate performance goals at the end of a three-year cycle.&nbsp;&nbsp;During the first quarter of 2011, there were&nbsp;<font class="_mt">580,900</font> PSUs granted with a grant-date fair value of $<font class="_mt">62.75</font>.&nbsp;&nbsp;The PSUs granted in 2011 and 2010 will be paid in the form of shares of Common Stock.</font></p> <p align="left"><font size="2" class="_mt">During the first quarter of 2011,&nbsp;<font class="_mt">850,595</font> PSUs were earned and paid out, one-half in shares of Common Stock and one-half in cash.&nbsp;&nbsp;These PSUs had a grant-date fair value of $<font class="_mt">50.47</font> per unit and a fair value at payout of $<font class="_mt">62.75</font> per unit.&nbsp;&nbsp;The total related tax benefit recognized as additional paid-in capital was $<font class="_mt">2</font> million for the first quarter of 2011.</font></p> <p align="left"><font size="2" class="_mt">During the first quarter of 2010,&nbsp;<font class="_mt">851,893</font> PSUs were earned and paid out, one-half in shares of Common Stock and one-half in cash.&nbsp;&nbsp;These PSUs had a grant-date fair value of $<font class="_mt">49.56</font> per unit and a fair value at payout of $<font class="_mt">47.76</font> per unit.&nbsp;&nbsp;The total related tax expense recognized as additional paid-in capital was less than $<font class="_mt">1</font> million for the first quarter of 2010.</font></p> </div> 133000000 133000000 0.69 0.91 0.68 0.90 <div> <p align="left"><strong><font size="2" class="_mt">3.&nbsp;&nbsp;Earnings Per Share</font></strong></p><font size="2" class="_mt"> </font> <table style="font-size: 20px;" border="0" width="986"> <tr><td><font size="2" class="_mt">&nbsp;</font></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td><font size="2" class="_mt">&nbsp;</font></td></tr> <tr><td><font size="2" class="_mt">&nbsp;</font></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td colspan="10"> <div align="center"><strong><font size="2" class="_mt">Three months ended March 31,</font></strong></div></td></tr> <tr><td><font size="2" class="_mt">&nbsp;</font></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td width="61"> <div align="center"><u><strong><font size="2" class="_mt">2011</font></strong></u></div></td> <td width="18"><font size="2" class="_mt">&nbsp;</font></td> <td width="18"><font size="2" class="_mt">&nbsp;</font></td> <td width="61"> <div align="center"><u><strong><font size="2" class="_mt">2010</font></strong></u></div></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td width="61"> <div align="center"><u><strong><font size="2" class="_mt">2011</font></strong></u></div></td> <td width="18"><font size="2" class="_mt">&nbsp;</font></td> <td width="18"><font size="2" class="_mt">&nbsp;</font></td> <td width="61"> <div align="center"><u><strong><font size="2" class="_mt">2010</font></strong></u></div></td></tr> <tr><td width="524"><font size="2" class="_mt">&nbsp;</font></td> <td width="19"><font size="2" class="_mt">&nbsp;</font></td> <td colspan="4"> <div style="border-bottom: thin solid;" align="center"><strong><font size="2" class="_mt">Basic</font></strong></div></td> <td width="18"><font size="2" class="_mt">&nbsp;</font></td> <td width="18"><font size="2" class="_mt">&nbsp;</font></td> <td colspan="4"> <div style="border-bottom: thin solid;" align="center"><strong><font size="2" class="_mt">Diluted</font></strong></div></td></tr> <tr><td><font size="2" class="_mt">&nbsp;</font></td> <td colspan="8"><em><font size="2" class="_mt">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;($ in millions except per share, shares in millions)</font></em></td></tr> <tr><td><font size="2" class="_mt">&nbsp;</font></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td><font size="2" class="_mt">&nbsp;</font></td></tr> <tr><td><font size="2" class="_mt">Net income</font></td> <td> <div align="right"><font size="2" class="_mt">$</font></div></td> <td> <div align="right"><font size="2" class="_mt">325&nbsp;</font></div></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td> <div align="right"><font size="2" class="_mt">$</font></div></td> <td> <div align="right"><font size="2" class="_mt">257&nbsp;</font></div></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td> <div align="right"><font size="2" class="_mt">$</font></div></td> <td> <div align="right"><font size="2" class="_mt">325&nbsp;</font></div></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td> <div align="right"><font size="2" class="_mt">$</font></div></td> <td> <div align="right"><font size="2" class="_mt">257&nbsp;</font></div></td></tr> <tr><td><font size="2" class="_mt">Dividend equivalent payments</font></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td> <div style="border-bottom: thin solid;" align="right"><font size="2" class="_mt">(2)</font></div></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td> <div style="border-bottom: thin solid;" align="right"><font size="2" class="_mt">(2)</font></div></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td> <div style="border-bottom: thin solid;" align="right"><font size="2" class="_mt">(2)</font></div></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td> <div style="border-bottom: thin solid;" align="right"><font size="2" class="_mt">(2)</font></div></td></tr> <tr><td><font size="2" class="_mt">Income available to common stockholders</font></td> <td> <div align="right"><font size="2" class="_mt">$</font></div></td> <td><font size="2" class="_mt"> </font> <div align="right"><font size="2" class="_mt">323&nbsp;</font></div><font size="2" class="_mt"> </font></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td> <div align="right"><font size="2" class="_mt">$</font></div></td> <td><font size="2" class="_mt"> </font> <div align="right"><font size="2" class="_mt">255&nbsp;</font></div><font size="2" class="_mt"> </font></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td> <div align="right"><font size="2" class="_mt">$</font></div></td> <td><font size="2" class="_mt"> </font> <div align="right"><font size="2" class="_mt">323&nbsp;</font></div><font size="2" class="_mt"> </font></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td> <div align="right"><font size="2" class="_mt">$</font></div></td> <td><font size="2" class="_mt"> </font> <div align="right"><font size="2" class="_mt">255&nbsp;</font></div><font size="2" class="_mt"> </font></td></tr> <tr><td><font size="2" class="_mt">&nbsp;</font></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td><font size="2" class="_mt">&nbsp;</font></td></tr> <tr><td><font size="2" class="_mt">Weighted-average shares outstanding</font></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td> <div style="border-bottom: thin solid;" align="right"><font size="2" class="_mt">355.2&nbsp;</font></div></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td> <div style="border-bottom: thin solid;" align="right"><font size="2" class="_mt">369.5&nbsp;</font></div></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td><font size="2" class="_mt"> </font> <div align="right"><font size="2" class="_mt">355.2&nbsp;</font></div><font size="2" class="_mt"> </font></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td><font size="2" class="_mt"> </font> <div align="right"><font size="2" class="_mt">369.5&nbsp;</font></div><font size="2" class="_mt"> </font></td></tr> <tr><td><font size="2" class="_mt">Dilutive effect of outstanding options and share-settled awards</font></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td> <div style="border-bottom: thin solid;" align="right"><font size="2" class="_mt">5.3&nbsp;</font></div></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td> <div style="border-bottom: thin solid;" align="right"><font size="2" class="_mt">5.4&nbsp;</font></div></td></tr> <tr><td><font size="2" class="_mt">Adjusted weighted-average shares outstanding</font></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td> <div style="border-bottom: thin solid;" align="right"><font size="2" class="_mt">360.5&nbsp;</font></div></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td> <div style="border-bottom: thin solid;" align="right"><font size="2" class="_mt">374.9&nbsp;</font></div></td></tr> <tr><td><font size="2" class="_mt">Earnings per share</font></td> <td> <div align="right"><font size="2" class="_mt">$</font></div></td> <td><font size="2" class="_mt"> </font> <div style="border-bottom: double;" align="right"><font size="2" class="_mt">0.91&nbsp;</font></div><font size="2" class="_mt"> </font></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td> <div align="right"><font size="2" class="_mt">$</font></div></td> <td><font size="2" class="_mt"> </font> <div style="border-bottom: double;" align="right"><font size="2" class="_mt">0.69&nbsp;</font></div><font size="2" class="_mt"> </font></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td> <div align="right"><font size="2" class="_mt">$</font></div></td> <td><font size="2" class="_mt"> </font> <div style="border-bottom: double;" align="right"><font size="2" class="_mt">0.90&nbsp;</font></div><font size="2" class="_mt"> </font></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td> <div align="right"><font size="2" class="_mt">$</font></div></td> <td><font size="2" class="_mt"> </font> <div style="border-bottom: double;" align="right"><font size="2" class="_mt">0.68&nbsp;</font></div><font size="2" class="_mt"> </font></td></tr></table><font size="2" class="_mt"> </font> <p align="left"><font size="2" class="_mt">During the first quarters of 2011 and 2010, dividend equivalent payments were made to holders of stock options and restricted stock units.&nbsp;&nbsp;For purposes of computing basic earnings per share, the total amount of dividend equivalent payments made to holders of stock options and restricted stock units were deducted from net income to determine income available to common stockholders.&nbsp;&nbsp;For purposes of computing diluted earnings per share, NS evaluates on a grant-by-grant basis those stock options and restricted stock units receiving dividend equivalent payments under the two-class and treasury stock methods to determine which method is the more dilutive for each award.&nbsp;&nbsp;For all stock option awards, for all periods presented, the two-class method was more dilutive and, as a result, net income was reduced by the amount of dividend equivalent payments on these awards to determine income available to common stockholders.&nbsp;&nbsp;For all restricted stock unit awards, for all periods presented, the treasury stock method was more dilutive and, as such, net income was not adjusted for the effect of these dividend equivalent payments.&nbsp;&nbsp;The diluted calculations exclude options having exercise prices exceeding the average market price of Common Stock as follows:&nbsp;<font class="_mt">zero</font> in 2011 and 2010. </font></p> </div> -2000000 -2000000 0.58 0.50 <div> <p align="left"><strong><font size="2" class="_mt">9.&nbsp;&nbsp;Fair Value</font></strong></p> <p align="left"><strong><font size="2" class="_mt">Fair Value Measurements</font></strong></p> <p align="left"><font size="2" class="_mt">ASC 820-10, <em>"Fair Value Measurements,"</em> established a framework for measuring fair value and a fair value hierarchy that prioritizes the inputs to valuation techniques used to measure fair value into three broad levels, as follows: </font></p> <blockquote> <center> <table style="font-size: 20px;" border="0" width="905"> <tr><td valign="top" width="79"> <p align="left"><font size="2" class="_mt">Level 1</font></p></td> <td valign="top" width="538"> <p align="left"><font size="2" class="_mt">Inputs to the valuation methodology are unadjusted quoted prices for identical assets or liabilities in active markets that NS has the ability to access.</font></p></td></tr> <tr><td> <p align="left">&nbsp;</p></td> <td> <p align="left">&nbsp;</p></td></tr> <tr><td> <p align="left"><font size="2" class="_mt">Level 2</font></p></td> <td> <p align="left"><font size="2" class="_mt">Inputs to the valuation methodology include:</font></p></td></tr> <tr><td colspan="2"> <blockquote> <blockquote> <ul> <li> <div align="left"><font style="font-family: times new roman;" size="2" class="_mt">Quoted prices for similar assets or liabilities in active markets; <br /></font></div> </li> <li> <div align="left"><font style="font-family: times new roman;" size="2" class="_mt">Quoted prices for identical or similar assets or liabilities in inactive markets; <br /></font></div> </li> <li> <div align="left"><font style="font-family: times new roman;" size="2" class="_mt">Inputs other than quoted prices that are observable for the asset or liability; <br /></font></div> </li> <li> <div align="left"><font style="font-family: times new roman;" size="2" class="_mt">Inputs that are derived principally from or corroborated by observable market data by correlation or other means. </font></div></li></ul></blockquote></blockquote></td></tr> <tr><td> <p align="left">&nbsp;</p></td> <td> <p align="left">&nbsp;</p></td></tr> <tr><td> <p align="left">&nbsp;</p></td> <td> <p align="left"><font size="2" class="_mt">If the asset or liability has a specified (contractual) term, the Level 2 input must be observable for substantially the full term of the asset or liability.</font></p></td></tr> <tr><td> <p align="left">&nbsp;</p></td> <td> <p align="left">&nbsp;</p></td></tr> <tr><td valign="top"> <p align="left"><font size="2" class="_mt">Level 3</font></p></td> <td valign="top"> <p align="left"><font size="2" class="_mt">Inputs to the valuation methodology are unobservable and significant to the fair value measurement.</font></p></td></tr></table></center></blockquote> <p align="left"><font size="2" class="_mt">The asset's or liability's fair value measurement level within the hierarchy is based on the lowest level of any input that is significant to the fair value measurement.&nbsp;&nbsp;At March 31, 2011 and December 31, 2010, for assets measured at fair value on a recurring basis, there were $<font class="_mt">119</font> million and $<font class="_mt">175</font> million of available-for-sale securities valued under level 2 of the fair value hierarchy, respectively.&nbsp;&nbsp;There were no available-for-sale securities valued under level 1 or level 3 valuation techniques. </font></p> <p align="left"><strong><font size="2" class="_mt">Fair Values of Financial Instruments</font></strong></p> <p align="left"><font size="2" class="_mt">NS has evaluated the fair values of financial instruments and methods used to determine those fair values.&nbsp;&nbsp;The fair values of "Cash and cash equivalents," "Short-term investments," "Accounts receivable," "Accounts payable," and "Short-term debt" approximate carrying values because of the short maturity of these financial instruments.&nbsp;&nbsp;The carrying value of corporate-owned life insurance is recorded at cash surrender value and, accordingly, approximates fair value.&nbsp;&nbsp;The carrying amounts and estimated fair values for the remaining financial instruments, excluding derivatives and investments accounted for under the equity method, consisted of the following:</font></p><font size="2" class="_mt"> </font> <table style="font-size: 20px;" width="882"> <tr><td><font size="2" class="_mt">&nbsp;</font></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td><font size="2" class="_mt">&nbsp;</font></td></tr> <tr><td><font size="2" class="_mt">&nbsp;</font></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td colspan="4"> <div align="center"><strong><font size="2" class="_mt">March 31, 2011</font></strong></div></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td colspan="4"> <div align="center"><strong><font size="2" class="_mt">December 31, 2010</font></strong></div></td></tr> <tr><td width="370"><font size="2" class="_mt">&nbsp;</font></td> <td width="20"><font size="2" class="_mt">&nbsp;</font></td> <td colspan="2"> <div align="center"><strong><font size="2" class="_mt">Carrying</font></strong></div></td> <td colspan="2"> <div align="center"><strong><font size="2" class="_mt">Fair</font></strong></div></td> <td width="20"><font size="2" class="_mt">&nbsp;</font></td> <td width="20"><font size="2" class="_mt">&nbsp;</font></td> <td colspan="2"> <div align="center"><strong><font size="2" class="_mt">Carrying</font></strong></div></td> <td colspan="2"> <div align="center"><strong><font size="2" class="_mt">Fair</font></strong></div></td></tr> <tr><td><font size="2" class="_mt">&nbsp;</font></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td colspan="2"> <div align="center"><u><strong><font size="2" class="_mt">Amount</font></strong></u></div></td> <td colspan="2"> <div align="center"><u><strong><font size="2" class="_mt">Value</font></strong></u></div></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td colspan="2"> <div align="center"><u><strong><font size="2" class="_mt">Amount</font></strong></u></div></td> <td colspan="2"> <div align="center"><u><strong><font size="2" class="_mt">Value</font></strong></u></div></td></tr> <tr><td><font size="2" class="_mt">&nbsp;</font></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td width="60"><font size="2" class="_mt">&nbsp;</font></td> <td width="20"><font size="2" class="_mt">&nbsp;</font></td> <td width="20"><font size="2" class="_mt">&nbsp;</font></td> <td colspan="4"> <div align="center"><em><font size="2" class="_mt">($ in millions)</font></em></div></td> <td width="20"><font size="2" class="_mt">&nbsp;</font></td> <td width="20"><font size="2" class="_mt">&nbsp;</font></td> <td width="60"><font size="2" class="_mt">&nbsp;</font></td></tr> <tr><td><font size="2" class="_mt">&nbsp;</font></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td width="60"><font size="2" class="_mt">&nbsp;</font></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td width="60"><font size="2" class="_mt">&nbsp;</font></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td><font size="2" class="_mt">&nbsp;</font></td></tr> <tr><td><font size="2" class="_mt">Long-term investments</font></td> <td> <div align="right"><font size="2" class="_mt">$</font></div></td> <td><font size="2" class="_mt"> </font> <div align="right"><font size="2" class="_mt">170&nbsp;</font></div><font size="2" class="_mt"> </font></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td> <div align="right"><font size="2" class="_mt">$</font></div></td> <td><font size="2" class="_mt"> </font> <div align="right"><font size="2" class="_mt">197&nbsp;</font></div><font size="2" class="_mt"> </font></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td> <div align="right"><font size="2" class="_mt">$</font></div></td> <td><font size="2" class="_mt"> </font> <div align="right"><font size="2" class="_mt">192&nbsp;</font></div><font size="2" class="_mt"> </font></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td> <div align="right"><font size="2" class="_mt">$</font></div></td> <td><font size="2" class="_mt"> </font> <div align="right"><font size="2" class="_mt">222&nbsp;</font></div><font size="2" class="_mt"> </font></td></tr> <tr><td><font size="2" class="_mt">Long-term debt, including current maturities</font></td> <td> <div align="right"><font size="2" class="_mt">$</font></div></td> <td><font size="2" class="_mt"> </font> <div align="right"><font size="2" class="_mt">(6,617)</font></div><font size="2" class="_mt"> </font></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td> <div align="right"><font size="2" class="_mt">$</font></div></td> <td><font size="2" class="_mt"> </font> <div align="right"><font size="2" class="_mt">(7,768)</font></div><font size="2" class="_mt"> </font></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td> <div align="right"><font size="2" class="_mt">$</font></div></td> <td><font size="2" class="_mt"> </font> <div align="right"><font size="2" class="_mt">(6,925)</font></div><font size="2" class="_mt"> </font></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td> <div align="right"><font size="2" class="_mt">$</font></div></td> <td><font size="2" class="_mt"> </font> <div align="right"><font size="2" class="_mt">(7,971)</font></div><font size="2" class="_mt"> </font></td></tr></table><font size="2" class="_mt"><br /></font> <p align="left"><font size="2" class="_mt">Underlying net assets were used to estimate the fair value of investments with the exception of notes receivable, which are based on future discounted cash flows.&nbsp;&nbsp;The fair values of long-term debt were estimated based on quoted market prices or discounted cash flows using current interest rates for debt with similar terms, company rating, and remaining maturity.</font></p> <p align="left"><font size="2" class="_mt">Carrying amounts of available-for-sale securities reflect immaterial unrealized holding gains on March 31, 2011 and December 31, 2010.&nbsp;&nbsp;Sales of available-for-sale securities were $<font class="_mt">55</font> million and $<font class="_mt">20</font> million for the three months ended March 31, 2011 and 2010, respectively.</font></p> </div> 254000000 389000000 1000000 0 49000000 59000000 74000000 59000000 108000000 133000000 <div> <div style="font-size: 20px;"> <p align="left"><strong><font size="2" class="_mt">2.&nbsp;&nbsp;Income Taxes</font></strong></p> <p align="left"><font size="2" class="_mt">During the first quarter of 2010, the Patient Protection and Affordable Care Act, and the Health Care and Education Reconciliation Act of 2010 were signed into law.&nbsp;&nbsp;Provisions of the Acts eliminated, after 2012, the tax deduction available for reimbursed prescription drug expenses under the Medicare Part D retiree drug subsidy program.&nbsp;&nbsp;As required by the Financial Accounting Standards Board Accounting Standards Codification (ASC) 740, <em>"Income Taxes,"</em> NS recorded a $<font class="_mt">27</font> million charge to deferred tax expense in the first quarter of 2010.</font></p> <p align="left"><font size="2" class="_mt">NS' balance of unrecognized tax benefits reported at December 31, 2010, decreased by $<font class="_mt">38</font> million during the first quarter of 2011, primarily because the timing of deductibility of a tax position became certain during the quarter.&nbsp;&nbsp;NS' consolidated income tax return for 2008 is being audited by the Internal Revenue Service (IRS) and the examination, along with the IRS' review of certain refund claims for prior years, is expected to be completed within the next six months.&nbsp;&nbsp;If resolved favorably, the completion of the examination and review could reduce unrecognized tax benefits and income tax expense by approximately $<font class="_mt">40</font> million.</font></p><br /><br /></div> </div> 0 3000000 199000000 190000000 101000000 127000000 -17000000 -19000000 209000000 27000000 119000000 112000000 50000000 72000000 <div> <table style="font-size: 20px;" width="897"> <tr><td><font size="2" class="_mt">&nbsp;</font></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td><font size="2" class="_mt">&nbsp;</font></td></tr> <tr><td><font size="2" class="_mt">&nbsp;</font></td> <td colspan="3"> <div align="center"><strong><font size="2" class="_mt">March 31,</font></strong></div></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td colspan="5"> <div align="center"><strong><font size="2" class="_mt">December 31,</font></strong></div></td></tr> <tr><td><font size="2" class="_mt">&nbsp;</font></td> <td colspan="3"> <div align="center"><u><strong><font size="2" class="_mt">2011</font></strong></u></div></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td colspan="5"> <div align="center"><u><strong><font size="2" class="_mt">2010</font></strong></u></div></td></tr> <tr><td><font size="2" class="_mt">&nbsp;</font></td> <td colspan="9"> <div align="center"><em><font size="2" class="_mt">($ in millions)&nbsp;&nbsp;&nbsp;&nbsp;</font></em></div></td></tr> <tr><td><font size="2" class="_mt">&nbsp;</font></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td><font size="2" class="_mt">&nbsp;</font></td></tr> <tr><td width="531"><font size="2" class="_mt">Short-term investments with average remaining maturities:</font></td> <td width="20"><font size="2" class="_mt">&nbsp;</font></td> <td width="60"><font size="2" class="_mt">&nbsp;</font></td> <td width="20"><font size="2" class="_mt">&nbsp;</font></td> <td width="20"><font size="2" class="_mt">&nbsp;</font></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td><font size="2" class="_mt">&nbsp;</font></td></tr> <tr><td><font size="2" class="_mt">&nbsp;&nbsp;Available-for-sale:</font></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td width="20"><font size="2" class="_mt">&nbsp;</font></td> <td width="20"><font size="2" class="_mt">&nbsp;</font></td> <td width="60"><font size="2" class="_mt">&nbsp;</font></td> <td width="20"><font size="2" class="_mt">&nbsp;</font></td> <td width="20"><font size="2" class="_mt">&nbsp;</font></td></tr> <tr><td><font size="2" class="_mt">&nbsp;&nbsp;&nbsp;Certificates of deposit,&nbsp;<font class="_mt">4</font> and&nbsp;<font class="_mt">5</font> months, respectively</font></td> <td> <div align="right"><font size="2" class="_mt">$</font></div></td> <td> <div align="right"><font size="2" class="_mt">56</font></div></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td> <div align="right"><font size="2" class="_mt">$</font></div></td> <td> <div align="right"><font size="2" class="_mt">76</font></div></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td><font size="2" class="_mt">&nbsp;</font></td></tr> <tr><td><font size="2" class="_mt">&nbsp;&nbsp;&nbsp;Corporate bonds,&nbsp;<font class="_mt">2</font> and&nbsp;<font class="_mt">4</font> months, respectively</font></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td> <div align="right"><font size="2" class="_mt">38</font></div></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td> <div align="right"><font size="2" class="_mt">64</font></div></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td><font size="2" class="_mt">&nbsp;</font></td></tr> <tr><td><font size="2" class="_mt">&nbsp;&nbsp;&nbsp;Commercial paper,&nbsp;<font class="_mt">2</font> and&nbsp;<font class="_mt">4</font> months, respectively</font></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td> <div style="border-left-color: #000; border-top-color: #000; border-bottom: #000 thin solid; border-right-color: #000;" align="right"><font size="2" class="_mt">25</font></div></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td> <div style="border-left-color: #000; border-top-color: #000; border-bottom: #000 thin solid; border-right-color: #000;" align="right"><font size="2" class="_mt">35</font></div></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td><font size="2" class="_mt">&nbsp;</font></td></tr> <tr><td><font size="2" class="_mt">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Total available-for-sale</font></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td> <div style="border-left-color: #000; border-top-color: #000; border-bottom: #000 thin solid; border-right-color: #000;" align="right"><font size="2" class="_mt">119</font></div></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td> <div style="border-left-color: #000; border-top-color: #000; border-bottom: #000 thin solid; border-right-color: #000;" align="right"><font size="2" class="_mt">175</font></div></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td><font size="2" class="_mt">&nbsp;</font></td></tr> <tr><td><font size="2" class="_mt">&nbsp;&nbsp;Held-to-maturity:</font></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td><font size="2" class="_mt">&nbsp;</font></td></tr> <tr><td><font size="2" class="_mt">&nbsp;&nbsp;&nbsp;Federal government bonds,&nbsp;<font class="_mt">7</font> and&nbsp;<font class="_mt">9</font> months, respectively</font></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td> <div align="right"><font size="2" class="_mt">74</font></div></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td> <div align="right"><font size="2" class="_mt">49</font></div></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td><font size="2" class="_mt">&nbsp;</font></td></tr> <tr><td><font size="2" class="_mt">&nbsp;&nbsp;&nbsp;Corporate bonds,&nbsp;<font class="_mt"><font class="_mt">7</font> </font>and&nbsp;<font class="_mt">10</font> months, respectively</font></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td> <div style="border-left-color: #000; border-top-color: #000; border-bottom: #000 thin solid; border-right-color: #000;" align="right"><font size="2" class="_mt">59</font></div></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td> <div style="border-left-color: #000; border-top-color: #000; border-bottom: #000 thin solid; border-right-color: #000;" align="right"><font size="2" class="_mt">59</font></div></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td><font size="2" class="_mt">&nbsp;</font></td></tr> <tr><td><font size="2" class="_mt">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Total held-to-maturity</font></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td> <div style="border-left-color: #000; border-top-color: #000; border-bottom: #000 thin solid; border-right-color: #000;" align="right"><font size="2" class="_mt">133</font></div></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td> <div style="border-left-color: #000; border-top-color: #000; border-bottom: #000 thin solid; border-right-color: #000;" align="right"><font size="2" class="_mt">108</font></div></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td><font size="2" class="_mt">&nbsp;</font></td></tr> <tr><td><font size="2" class="_mt">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Total short-term investments</font></td> <td> <div align="right"><font size="2" class="_mt">$</font></div></td> <td> <div style="border-bottom: double;" align="right"><font size="2" class="_mt">252</font></div></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td> <div align="right"><font size="2" class="_mt">$</font></div></td> <td> <div style="border-bottom: double;" align="right"><font size="2" class="_mt">283</font></div></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td><font size="2" class="_mt">&nbsp;</font></td></tr></table> </div> 699000000 765000000 17530000000 17127000000 28199000000 27728000000 2082000000 1567000000 6925000000 6617000000 6567000000 6554000000 358000000 63000000 2193000000 2199000000 1200000000 -233000000 -861000000 -360000000 -382000000 758000000 652000000 255000000 323000000 255000000 323000000 1683000000 2020000000 555000000 600000000 240000000 72000000 304000000 246000000 19000000 19000000 244000000 309000000 1793000000 1794000000 20000000 27000000 -51000000 -55000000 0 343000000 126000000 142000000 155000000 4000000 256000000 423000000 <div> <div style="font-size: 20px;"> <p align="left"><strong><font size="2" class="_mt">7.&nbsp;&nbsp;Pensions and Other Postretirement Benefits</font></strong></p> <p align="left"><font size="2" class="_mt">Norfolk Southern and certain subsidiaries have both funded and unfunded defined benefit pension plans covering principally salaried employees.&nbsp;&nbsp;Norfolk Southern and certain subsidiaries also provide specified health care and death benefits to eligible retired employees and their dependents.&nbsp;&nbsp;Under the present plans, which may be amended or terminated at NS' option, a defined percentage of health care expenses are covered, reduced by any deductibles, co-payments, Medicare payments, and in some cases, coverage provided under other group insurance policies.</font></p><font size="2" class="_mt"> </font> <table style="font-size: 20px;"> <tr><td><font size="2" class="_mt">&nbsp;</font></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td><font size="2" class="_mt">&nbsp;</font></td></tr> <tr><td><font size="2" class="_mt">&nbsp;</font></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td colspan="10"> <div align="center"><strong><font size="2" class="_mt">Three months ended March 31,</font></strong></div></td></tr> <tr><td width="389"><font size="2" class="_mt">&nbsp;</font></td> <td width="20"><font size="2" class="_mt">&nbsp;</font></td> <td width="60"> <div align="center"><u><strong><font size="2" class="_mt">2011</font></strong></u></div></td> <td width="20"><font size="2" class="_mt">&nbsp;</font></td> <td width="20"><font size="2" class="_mt">&nbsp;</font></td> <td width="60"> <div align="center"><u><strong><font size="2" class="_mt">2010</font></strong></u></div></td> <td width="20"><font size="2" class="_mt">&nbsp;</font></td> <td width="20"><font size="2" class="_mt">&nbsp;</font></td> <td width="60"> <div align="center"><u><strong><font size="2" class="_mt">2011</font></strong></u></div></td> <td width="20"><font size="2" class="_mt">&nbsp;</font></td> <td width="20"><font size="2" class="_mt">&nbsp;</font></td> <td width="60"> <div align="center"><u><strong><font size="2" class="_mt">2010</font></strong></u></div></td></tr> <tr><td><font size="2" class="_mt">&nbsp;</font></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td colspan="4"> <div align="center"><u><strong><font size="2" class="_mt">Pension Benefits</font></strong></u></div></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td colspan="4"> <div align="center"><u><strong><font size="2" class="_mt">Other Benefits</font></strong></u></div></td></tr> <tr><td><font size="2" class="_mt">&nbsp;</font></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td colspan="4"> <div align="center"><em><font size="2" class="_mt">($ in millions)</font></em></div></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td><font size="2" class="_mt">&nbsp;</font></td></tr> <tr><td><font size="2" class="_mt">&nbsp;</font></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td><font size="2" class="_mt">&nbsp;</font></td></tr> <tr><td><font size="2" class="_mt">Service cost</font></td> <td> <div align="right"><font size="2" class="_mt">$</font></div></td> <td> <div align="right"><font size="2" class="_mt">7&nbsp;</font></div></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td> <div align="right"><font size="2" class="_mt">$</font></div></td> <td> <div align="right"><font size="2" class="_mt">7&nbsp;</font></div></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td> <div align="right"><font size="2" class="_mt">$</font></div></td> <td> <div align="right"><font size="2" class="_mt">4&nbsp;</font></div></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td> <div align="right"><font size="2" class="_mt">$</font></div></td> <td> <div align="right"><font size="2" class="_mt">4&nbsp;</font></div></td></tr> <tr><td><font size="2" class="_mt">Interest cost</font></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td> <div align="right"><font size="2" class="_mt">23&nbsp;</font></div></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td> <div align="right"><font size="2" class="_mt">24&nbsp;</font></div></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td> <div align="right"><font size="2" class="_mt">15&nbsp;</font></div></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td> <div align="right"><font size="2" class="_mt">15&nbsp;</font></div></td></tr> <tr><td><font size="2" class="_mt">Expected return on plan assets</font></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td> <div align="right"><font size="2" class="_mt">(35)</font></div></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td> <div align="right"><font size="2" class="_mt">(36)</font></div></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td> <div align="right"><font size="2" class="_mt">(4)</font></div></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td> <div align="right"><font size="2" class="_mt">(4)</font></div></td></tr> <tr><td><font size="2" class="_mt">Amortization of net losses</font></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td> <div align="right"><font size="2" class="_mt">17&nbsp;</font></div></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td> <div align="right"><font size="2" class="_mt">12&nbsp;</font></div></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td> <div align="right"><font size="2" class="_mt">11&nbsp;</font></div></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td> <div align="right"><font size="2" class="_mt">12&nbsp;</font></div></td></tr> <tr><td><font size="2" class="_mt">Amortization of prior service cost</font></td> <td><font size="2" 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size="2" class="_mt">12&nbsp;</font></div></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td> <div align="right"><font size="2" class="_mt">$</font></div></td> <td> <div style="border-bottom: double;" align="right"><font size="2" class="_mt">8&nbsp;</font></div></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td> <div align="right"><font size="2" class="_mt">$</font></div></td> <td> <div style="border-bottom: double;" align="right"><font size="2" class="_mt">26&nbsp;</font></div></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td> <div align="right"><font size="2" class="_mt">$</font></div></td> <td> <div style="border-bottom: double;" align="right"><font size="2" class="_mt">27&nbsp;</font></div></td></tr></table><font size="2" class="_mt"><br /></font></div> </div> 20000000 55000000 0 -10000000 21000000 32000000 257000000 325000000 23231000000 23451000000 128000000 408000000 9224000000 9094000000 2238000000 2620000000 <div> <p align="left"><strong><font 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width="389"><font size="2" class="_mt">&nbsp;</font></td> <td width="20"><font size="2" class="_mt">&nbsp;</font></td> <td width="60"> <div align="center"><u><strong><font size="2" class="_mt">2011</font></strong></u></div></td> <td width="20"><font size="2" class="_mt">&nbsp;</font></td> <td width="20"><font size="2" class="_mt">&nbsp;</font></td> <td width="60"> <div align="center"><u><strong><font size="2" class="_mt">2010</font></strong></u></div></td> <td width="20"><font size="2" class="_mt">&nbsp;</font></td> <td width="20"><font size="2" class="_mt">&nbsp;</font></td> <td width="60"> <div align="center"><u><strong><font size="2" class="_mt">2011</font></strong></u></div></td> <td width="20"><font size="2" class="_mt">&nbsp;</font></td> <td width="20"><font size="2" class="_mt">&nbsp;</font></td> <td width="60"> <div align="center"><u><strong><font size="2" class="_mt">2010</font></strong></u></div></td></tr> <tr><td><font size="2" class="_mt">&nbsp;</font></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td colspan="4"> <div align="center"><u><strong><font size="2" class="_mt">Pension Benefits</font></strong></u></div></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td colspan="4"> <div align="center"><u><strong><font size="2" class="_mt">Other Benefits</font></strong></u></div></td></tr> <tr><td><font size="2" class="_mt">&nbsp;</font></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td colspan="4"> <div align="center"><em><font size="2" class="_mt">($ in millions)</font></em></div></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td><font size="2" class="_mt">&nbsp;</font></td></tr> <tr><td><font size="2" class="_mt">&nbsp;</font></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td><font size="2" class="_mt">&nbsp;</font></td></tr> <tr><td><font size="2" class="_mt">Service cost</font></td> <td> <div align="right"><font size="2" class="_mt">$</font></div></td> <td> <div align="right"><font size="2" class="_mt">7&nbsp;</font></div></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td> <div align="right"><font size="2" class="_mt">$</font></div></td> <td> <div align="right"><font size="2" class="_mt">7&nbsp;</font></div></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td> <div align="right"><font size="2" class="_mt">$</font></div></td> <td> <div align="right"><font size="2" class="_mt">4&nbsp;</font></div></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td> <div align="right"><font size="2" class="_mt">$</font></div></td> <td> <div align="right"><font size="2" class="_mt">4&nbsp;</font></div></td></tr> <tr><td><font size="2" class="_mt">Interest cost</font></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td> <div align="right"><font size="2" class="_mt">23&nbsp;</font></div></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td> <div align="right"><font size="2" class="_mt">24&nbsp;</font></div></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td> <div align="right"><font size="2" class="_mt">15&nbsp;</font></div></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td> <div align="right"><font size="2" class="_mt">15&nbsp;</font></div></td></tr> <tr><td><font size="2" class="_mt">Expected return on plan assets</font></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td> <div align="right"><font size="2" class="_mt">(35)</font></div></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td> <div align="right"><font size="2" class="_mt">(36)</font></div></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td> <div align="right"><font size="2" class="_mt">(4)</font></div></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td> <div align="right"><font size="2" class="_mt">(4)</font></div></td></tr> <tr><td><font size="2" class="_mt">Amortization of net losses</font></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td> <div align="right"><font size="2" class="_mt">17&nbsp;</font></div></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td> <div align="right"><font size="2" class="_mt">12&nbsp;</font></div></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td> <div align="right"><font size="2" class="_mt">11&nbsp;</font></div></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td> <div align="right"><font size="2" class="_mt">12&nbsp;</font></div></td></tr> <tr><td><font size="2" class="_mt">Amortization of prior service cost</font></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td> <div style="border-bottom: thin solid;" align="right"><font size="2" class="_mt">-&nbsp;</font></div></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td> <div style="border-bottom: thin solid;" align="right"><font size="2" class="_mt">1&nbsp;</font></div></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td> <div style="border-bottom: thin solid;" align="right"><font size="2" class="_mt">-&nbsp;</font></div></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td> <div style="border-bottom: thin solid;" align="right"><font size="2" class="_mt">-&nbsp;</font></div></td></tr> <tr><td><font size="2" class="_mt">&nbsp;&nbsp;&nbsp;&nbsp;Net cost</font></td> <td> <div align="right"><font size="2" class="_mt">$</font></div></td> <td> <div style="border-bottom: double;" align="right"><font size="2" class="_mt">12&nbsp;</font></div></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td> <div align="right"><font size="2" class="_mt">$</font></div></td> <td> <div style="border-bottom: double;" align="right"><font size="2" class="_mt">8&nbsp;</font></div></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td> <div align="right"><font size="2" class="_mt">$</font></div></td> <td> <div style="border-bottom: double;" align="right"><font size="2" class="_mt">26&nbsp;</font></div></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td> <div align="right"><font size="2" class="_mt">$</font></div></td> <td> <div style="border-bottom: double;" align="right"><font size="2" class="_mt">27&nbsp;</font></div></td></tr></table> </div>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; Three months ended MarchfalsefalsefalsefalsefalseOtherus-types:textBlockItemTypestringDisclosures about an individual defined benefit pension plan or an other postretirement defined benefit plan. 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style="font-size: 20px;" width="897"> <tr><td><font size="2" class="_mt">&nbsp;</font></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td><font size="2" class="_mt">&nbsp;</font></td></tr> <tr><td><font size="2" class="_mt">&nbsp;</font></td> <td colspan="3"> <div align="center"><strong><font size="2" class="_mt">March 31,</font></strong></div></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td colspan="5"> <div align="center"><strong><font size="2" class="_mt">December 31,</font></strong></div></td></tr> <tr><td><font size="2" class="_mt">&nbsp;</font></td> <td colspan="3"> <div align="center"><u><strong><font size="2" class="_mt">2011</font></strong></u></div></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td colspan="5"> <div align="center"><u><strong><font size="2" class="_mt">2010</font></strong></u></div></td></tr> <tr><td><font size="2" class="_mt">&nbsp;</font></td> <td colspan="9"> <div align="center"><em><font size="2" class="_mt">($ in millions)&nbsp;&nbsp;&nbsp;&nbsp;</font></em></div></td></tr> <tr><td><font size="2" class="_mt">&nbsp;</font></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td><font size="2" class="_mt">&nbsp;</font></td></tr> <tr><td width="531"><font size="2" class="_mt">Short-term investments with average remaining maturities:</font></td> <td width="20"><font size="2" class="_mt">&nbsp;</font></td> <td width="60"><font size="2" class="_mt">&nbsp;</font></td> <td width="20"><font size="2" class="_mt">&nbsp;</font></td> <td width="20"><font size="2" class="_mt">&nbsp;</font></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td><font size="2" class="_mt">&nbsp;</font></td></tr> <tr><td><font size="2" class="_mt">&nbsp;&nbsp;Available-for-sale:</font></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td width="20"><font size="2" class="_mt">&nbsp;</font></td> <td width="20"><font size="2" class="_mt">&nbsp;</font></td> <td width="60"><font size="2" class="_mt">&nbsp;</font></td> <td width="20"><font size="2" class="_mt">&nbsp;</font></td> <td width="20"><font size="2" class="_mt">&nbsp;</font></td></tr> <tr><td><font size="2" class="_mt">&nbsp;&nbsp;&nbsp;Certificates of deposit,&nbsp;<font class="_mt">4</font> and&nbsp;<font class="_mt">5</font> months, respectively</font></td> <td> <div align="right"><font size="2" class="_mt">$</font></div></td> <td> <div align="right"><font size="2" class="_mt">56</font></div></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td> <div align="right"><font size="2" class="_mt">$</font></div></td> <td> <div align="right"><font size="2" class="_mt">76</font></div></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td><font size="2" class="_mt">&nbsp;</font></td></tr> <tr><td><font size="2" class="_mt">&nbsp;&nbsp;&nbsp;Corporate bonds,&nbsp;<font class="_mt">2</font> and&nbsp;<font class="_mt">4</font> months, respectively</font></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td> <div align="right"><font size="2" class="_mt">38</font></div></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td> <div align="right"><font size="2" class="_mt">64</font></div></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td><font size="2" class="_mt">&nbsp;</font></td></tr> <tr><td><font size="2" class="_mt">&nbsp;&nbsp;&nbsp;Commercial paper,&nbsp;<font class="_mt">2</font> and&nbsp;<font class="_mt">4</font> months, respectively</font></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td> <div style="border-left-color: #000; border-top-color: #000; border-bottom: #000 thin solid; border-right-color: #000;" align="right"><font size="2" class="_mt">25</font></div></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td> <div style="border-left-color: #000; border-top-color: #000; border-bottom: #000 thin solid; border-right-color: #000;" align="right"><font size="2" class="_mt">35</font></div></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td><font size="2" class="_mt">&nbsp;</font></td></tr> <tr><td><font size="2" class="_mt">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Total available-for-sale</font></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td> <div style="border-left-color: #000; border-top-color: #000; border-bottom: #000 thin solid; border-right-color: #000;" align="right"><font size="2" class="_mt">119</font></div></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td> <div style="border-left-color: #000; border-top-color: #000; border-bottom: #000 thin solid; border-right-color: #000;" align="right"><font size="2" class="_mt">175</font></div></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td><font size="2" class="_mt">&nbsp;</font></td></tr> <tr><td><font size="2" class="_mt">&nbsp;&nbsp;Held-to-maturity:</font></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td><font size="2" class="_mt">&nbsp;</font></td></tr> <tr><td><font size="2" class="_mt">&nbsp;&nbsp;&nbsp;Federal government bonds,&nbsp;<font class="_mt">7</font> and&nbsp;<font class="_mt">9</font> months, respectively</font></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td> <div align="right"><font size="2" class="_mt">74</font></div></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td> <div align="right"><font size="2" class="_mt">49</font></div></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td><font size="2" class="_mt">&nbsp;</font></td></tr> <tr><td><font size="2" class="_mt">&nbsp;&nbsp;&nbsp;Corporate bonds,&nbsp;<font class="_mt"><font class="_mt">7</font> </font>and&nbsp;<font class="_mt">10</font> months, respectively</font></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td> <div style="border-left-color: #000; border-top-color: #000; border-bottom: #000 thin solid; border-right-color: #000;" align="right"><font size="2" class="_mt">59</font></div></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td> <div style="border-left-color: #000; border-top-color: #000; border-bottom: #000 thin solid; border-right-color: #000;" align="right"><font size="2" class="_mt">59</font></div></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td><font size="2" class="_mt">&nbsp;</font></td></tr> <tr><td><font size="2" class="_mt">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Total held-to-maturity</font></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td> <div style="border-left-color: #000; border-top-color: #000; border-bottom: #000 thin solid; border-right-color: #000;" align="right"><font size="2" class="_mt">133</font></div></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td> <div style="border-left-color: #000; border-top-color: #000; border-bottom: #000 thin solid; border-right-color: #000;" align="right"><font size="2" class="_mt">108</font></div></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td><font size="2" class="_mt">&nbsp;</font></td></tr> <tr><td><font size="2" class="_mt">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Total short-term investments</font></td> <td> <div align="right"><font size="2" class="_mt">$</font></div></td> <td> <div style="border-bottom: double;" align="right"><font size="2" class="_mt">252</font></div></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td> <div align="right"><font size="2" class="_mt">$</font></div></td> <td> <div style="border-bottom: double;" align="right"><font size="2" class="_mt">283</font></div></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td><font size="2" class="_mt">&nbsp;</font></td></tr></table><font size="2" class="_mt"><br /></font> <p><strong><font size="2" class="_mt">Investment in Conrail</font></strong></p> <p align="left"><font size="2" class="_mt">Through a limited liability company, Norfolk Southern and CSX Corporation (CSX) jointly own Conrail Inc. (Conrail), whose primary subsidiary is Consolidated Rail Corporation (CRC).&nbsp;&nbsp;NS has a <font class="_mt">58</font>% economic and <font class="_mt">50</font>% voting interest in the jointly owned entity, and CSX has the remainder of the economic and voting interests.&nbsp;&nbsp;NS' investment in Conrail was $<font class="_mt">965</font> million at March 31, 2011, and $<font class="_mt">959</font> million at December 31, 2010. </font></p> <p align="left"><font size="2" class="_mt">CRC owns and operates certain properties (the Shared Assets Areas) for the joint and exclusive benefit of Norfolk Southern Railway Company (NSR) and CSX Transportation, Inc. (CSXT).&nbsp;&nbsp;The costs of operating the Shared Assets Areas are borne by NSR and CSXT based on usage.&nbsp;&nbsp;In addition, NSR and CSXT pay CRC a fee for access to the Shared Assets Areas.&nbsp;&nbsp;"Purchased services and rents" and "Fuel" include expenses for the use of the Shared Assets Areas totaling $<font class="_mt">33</font> million for the first quarter of 2011 and $<font class="_mt">29</font> million for the first quarter of 2010.&nbsp;&nbsp;NS' equity in the earnings of Conrail, net of amortization, included in "Other income &ndash; net" was $<font class="_mt">6</font> million for the first quarters of 2011 and 2010.</font></p> <p align="left"><font size="2" class="_mt">"Accounts payable" includes $<font class="_mt">140</font> million at March 31, 2011, and $<font class="_mt">128</font> million at December 31, 2010, due to Conrail for the operation of the Shared Assets Areas.&nbsp;&nbsp;In addition, "Other liabilities" includes $<font class="_mt">133</font> million at both March 31, 2011 and December 31, 2010, for long-term advances from Conrail, maturing <font class="_mt">2035</font>, that bear interest at an average rate of <font class="_mt">4.4</font>%.</font></p></div> </div>6.&nbsp;&nbsp;Investments &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; March 31, &nbsp; DecemberfalsefalsefalsefalsefalseOtherus-types:textBlockItemTypestringThis represents the entire disclosure related to investmentNo authoritative reference available.falsefalse12Investments (Unaudited)UnKnownUnKnownUnKnownUnKnownfalsetrue XML 15 R10.xml IDEA: Stock Repurchase Program (Unaudited) 2.2.0.25falsefalse10501 - Disclosure - Stock Repurchase Program (Unaudited)truefalsefalse1falsefalseUSDfalsefalse1/1/2011 - 3/31/2011 USD ($) USD ($) / shares $Duration_1_1_2011_To_3_31_2011http://www.sec.gov/CIK0000702165duration2011-01-01T00:00:002011-03-31T00:00:00Unit12Standardhttp://www.xbrl.org/2003/iso4217USDiso42170Unit14Dividehttp://www.xbrl.org/2003/iso4217USDiso4217http://www.xbrl.org/2003/instancesharesxbrli0Unit1Standardhttp://www.xbrl.org/2003/instancesharesxbrli0Unit13Standardhttp://www.xbrl.org/2003/instancepurexbrli0USDUSD$2true0nsc_StockRepurchaseProgramAbstractnscfalsenadurationStock Repurchase Program [Abstract]falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00falsefalsefalsefalsefalseOtherxbrli:stringItemTypestringStock Repurchase Program [Abstract]falsefalse3false0nsc_StockRepurchaseProgramnscfalsenadurationThis element is used to disclose the repurchase of common stock through the company's repurchase program.falsefalsefalsefalsefalsefalsefalsefalsefalsefalseterselabel1falsefalsefalse00<div> <div style="font-size: 20px;"> <p align="left"><strong><font size="2" class="_mt">5.&nbsp;&nbsp;Stock Repurchase Program</font></strong></p> <p align="left"><font size="2" class="_mt">NS repurchased and retired&nbsp;<font class="_mt">5.3</font> million shares of Common Stock in the first quarter of 2011, at a cost of $<font class="_mt">343</font> million. There were no shares repurchased under this program in the first quarter of 2010.&nbsp;&nbsp;The timing and volume of purchases is guided by management's assessment of market conditions and other pertinent factors.&nbsp;&nbsp;Any near-term share repurchases are expected to be made with internally generated cash, cash on hand, or proceeds from borrowings.&nbsp;&nbsp;Since 2005, NS has repurchased and retired&nbsp;<font class="_mt">84.7</font> million shares at a total cost of $<font class="_mt">4.5</font> billion.</font></p><br /><br /></div> </div>5.&nbsp;&nbsp;Stock Repurchase Program NS repurchased and retired&nbsp;5.3 million shares of Common Stock in the first quarter of 2011, at a cost of $343falsefalsefalsefalsefalseOtherus-types:textBlockItemTypestringThis element is used to disclose the repurchase of common stock through the company's repurchase program.No authoritative reference available.falsefalse12Stock Repurchase Program (Unaudited)UnKnownUnKnownUnKnownUnKnownfalsetrue XML 16 R30.xml IDEA: Comprehensive Income (Unaudited) (Details) 2.2.0.25falsefalse40804 - Disclosure - Comprehensive Income (Unaudited) (Details)truefalseIn Millionsfalse1falsefalseUSDfalsefalse1/1/2011 - 3/31/2011 USD ($) USD ($) / shares $Duration_1_1_2011_To_3_31_2011http://www.sec.gov/CIK0000702165duration2011-01-01T00:00:002011-03-31T00:00:00Unit12Standardhttp://www.xbrl.org/2003/iso4217USDiso42170Unit14Dividehttp://www.xbrl.org/2003/iso4217USDiso4217http://www.xbrl.org/2003/instancesharesxbrli0Unit1Standardhttp://www.xbrl.org/2003/instancesharesxbrli0Unit13Standardhttp://www.xbrl.org/2003/instancepurexbrli0USDUSD$2falsefalseUSDfalsefalse1/1/2010 - 3/31/2010 USD ($) USD ($) / shares $Duration_1_1_2010_To_3_31_2010http://www.sec.gov/CIK0000702165duration2010-01-01T00:00:002010-03-31T00:00:00Unit12Standardhttp://www.xbrl.org/2003/iso4217USDiso42170Unit1Standardhttp://www.xbrl.org/2003/instancesharesxbrli0Unit14Dividehttp://www.xbrl.org/2003/iso4217USDiso4217http://www.xbrl.org/2003/instancesharesxbrli0USDUSD$2true0nsc_ComprehensiveIncomeAbstractnscfalsenadurationComprehensive Income [Abstract]falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00falsefalsefalsefalsefalse2falsefalsefalse00falsefalsefalsefalsefalseOtherxbrli:stringItemTypestringComprehensive Income [Abstract]falsefalse3false0us-gaap_ProfitLossus-gaaptruecreditdurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truefalsefalse325000000325falsetruefalsefalsefalse2truefalsefalse257000000257falsetruefalsefalsefalseMonetaryxbrli:monetaryItemTypemonetaryThe consolidated profit or loss for the period, net of income taxes, including the portion attributable to the noncontrolling interest.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher AICPA -Name Accounting Research Bulletin (ARB) -Number 51 -Paragraph A1, A4, A5 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher AICPA -Name Accounting Research Bulletin (ARB) -Number 51 -Paragraph 5 -Subparagraph b Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher AICPA -Name Accounting Research Bulletin (ARB) -Number 51 -Paragraph 29 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher AICPA -Name Accounting Research Bulletin (ARB) -Number 51 -Paragraph 38 -Subparagraph a Reference 5: http://www.xbrl.org/2003/role/presentationRef -Publisher AICPA -Name Accounting Research Bulletin (ARB) -Number 51 -Paragraph 38 -Subparagraph c(1) falsefalse4false0us-gaap_OtherComprehensiveIncomeLossNetOfTaxPeriodIncreaseDecreaseus-gaaptruenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalseterselabel1truefalsefalse1900000019falsefalsefalsefalsefalse2truefalsefalse1900000019falsefalsefalsefalsefalseMonetaryxbrli:monetaryItemTypemonetaryThis element represents Other Comprehensive Income (Loss), Net of Tax, for the period. Includes deferred gains (losses) on qualifying hedges, unrealized holding gains (losses) on available-for-sale securities, minimum pension liability, and cumulative translation adjustment.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher AICPA -Name Accounting Research Bulletin (ARB) -Number 51 -Paragraph 38 -Subparagraph c(3) Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 130 -Paragraph 22, 23, 24, 25 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher AICPA -Name Accounting Principles Board Opinion (APB) -Number 12 -Paragraph 10 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 31 -Article 5 Reference 5: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 04 -Article 3 falsefalse5false0nsc_TotalComprehensiveIncomeLossIncludingNetIncomenscfalsecreditdurationThis element is used to disclose Total Comprehensive Income (Loss), Net of Tax, for the period including Net Income.falsefalsefalsefalsefalsefalsefalsefalsefalsefalsetotallabel1truefalsefalse344000000344falsetruefalsefalsefalse2truefalsefalse276000000276falsetruefalsefalsefalseMonetaryxbrli:monetaryItemTypemonetaryThis element is used to disclose Total Comprehensive Income (Loss), Net of Tax, for the period including Net Income.No authoritative reference available.truefalse24Comprehensive Income (Unaudited) (Details) (USD $)MillionsUnKnownUnKnownUnKnownfalsetrue XML 17 R8.xml IDEA: Earnings Per Share (Unaudited) 2.2.0.25falsefalse10301 - Disclosure - Earnings Per Share (Unaudited)truefalsefalse1falsefalseUSDfalsefalse1/1/2011 - 3/31/2011 USD ($) USD ($) / shares $Duration_1_1_2011_To_3_31_2011http://www.sec.gov/CIK0000702165duration2011-01-01T00:00:002011-03-31T00:00:00Unit12Standardhttp://www.xbrl.org/2003/iso4217USDiso42170Unit14Dividehttp://www.xbrl.org/2003/iso4217USDiso4217http://www.xbrl.org/2003/instancesharesxbrli0Unit1Standardhttp://www.xbrl.org/2003/instancesharesxbrli0Unit13Standardhttp://www.xbrl.org/2003/instancepurexbrli0USDUSD$2true0us-gaap_EarningsPerShareAbstractus-gaaptruenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00falsefalsefalsefalsefalseOtherxbrli:stringItemTypestringNo definition available.falsefalse3false0us-gaap_EarningsPerShareTextBlockus-gaaptruenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalseterselabel1falsefalsefalse00<div> <p align="left"><strong><font size="2" class="_mt">3.&nbsp;&nbsp;Earnings Per Share</font></strong></p><font size="2" class="_mt"> </font> <table style="font-size: 20px;" border="0" width="986"> <tr><td><font size="2" class="_mt">&nbsp;</font></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td><font size="2" class="_mt">&nbsp;</font></td></tr> <tr><td><font size="2" class="_mt">&nbsp;</font></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td colspan="10"> <div align="center"><strong><font size="2" class="_mt">Three months ended March 31,</font></strong></div></td></tr> <tr><td><font size="2" class="_mt">&nbsp;</font></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td width="61"> <div align="center"><u><strong><font size="2" class="_mt">2011</font></strong></u></div></td> <td width="18"><font size="2" class="_mt">&nbsp;</font></td> <td width="18"><font size="2" class="_mt">&nbsp;</font></td> <td width="61"> <div align="center"><u><strong><font size="2" class="_mt">2010</font></strong></u></div></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td width="61"> <div align="center"><u><strong><font size="2" class="_mt">2011</font></strong></u></div></td> <td width="18"><font size="2" class="_mt">&nbsp;</font></td> <td width="18"><font size="2" class="_mt">&nbsp;</font></td> <td width="61"> <div align="center"><u><strong><font size="2" class="_mt">2010</font></strong></u></div></td></tr> <tr><td width="524"><font size="2" class="_mt">&nbsp;</font></td> <td width="19"><font size="2" class="_mt">&nbsp;</font></td> <td colspan="4"> <div style="border-bottom: thin solid;" align="center"><strong><font size="2" class="_mt">Basic</font></strong></div></td> <td width="18"><font size="2" class="_mt">&nbsp;</font></td> <td width="18"><font size="2" class="_mt">&nbsp;</font></td> <td colspan="4"> <div style="border-bottom: thin solid;" align="center"><strong><font size="2" class="_mt">Diluted</font></strong></div></td></tr> <tr><td><font size="2" class="_mt">&nbsp;</font></td> <td colspan="8"><em><font size="2" class="_mt">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;($ in millions except per share, shares in millions)</font></em></td></tr> <tr><td><font size="2" class="_mt">&nbsp;</font></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td><font size="2" class="_mt">&nbsp;</font></td></tr> <tr><td><font size="2" class="_mt">Net income</font></td> <td> <div align="right"><font size="2" class="_mt">$</font></div></td> <td> <div align="right"><font size="2" class="_mt">325&nbsp;</font></div></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td> <div align="right"><font size="2" class="_mt">$</font></div></td> <td> <div align="right"><font size="2" class="_mt">257&nbsp;</font></div></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td> <div align="right"><font size="2" class="_mt">$</font></div></td> <td> <div align="right"><font size="2" class="_mt">325&nbsp;</font></div></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td> <div align="right"><font size="2" class="_mt">$</font></div></td> <td> <div align="right"><font size="2" class="_mt">257&nbsp;</font></div></td></tr> <tr><td><font size="2" class="_mt">Dividend equivalent payments</font></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td> <div style="border-bottom: thin solid;" align="right"><font size="2" class="_mt">(2)</font></div></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td> <div style="border-bottom: thin solid;" align="right"><font size="2" class="_mt">(2)</font></div></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td> <div style="border-bottom: thin solid;" align="right"><font size="2" class="_mt">(2)</font></div></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td> <div style="border-bottom: thin solid;" align="right"><font size="2" class="_mt">(2)</font></div></td></tr> <tr><td><font size="2" class="_mt">Income available to common stockholders</font></td> <td> <div align="right"><font size="2" class="_mt">$</font></div></td> <td><font size="2" class="_mt"> </font> <div align="right"><font size="2" class="_mt">323&nbsp;</font></div><font size="2" class="_mt"> </font></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td> <div align="right"><font size="2" class="_mt">$</font></div></td> <td><font size="2" class="_mt"> </font> <div align="right"><font size="2" class="_mt">255&nbsp;</font></div><font size="2" class="_mt"> </font></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td> <div align="right"><font size="2" class="_mt">$</font></div></td> <td><font size="2" class="_mt"> </font> <div align="right"><font size="2" class="_mt">323&nbsp;</font></div><font size="2" class="_mt"> </font></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td> <div align="right"><font size="2" class="_mt">$</font></div></td> <td><font size="2" class="_mt"> </font> <div align="right"><font size="2" class="_mt">255&nbsp;</font></div><font size="2" class="_mt"> </font></td></tr> <tr><td><font size="2" class="_mt">&nbsp;</font></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td><font size="2" class="_mt">&nbsp;</font></td></tr> <tr><td><font size="2" class="_mt">Weighted-average shares outstanding</font></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td> <div style="border-bottom: thin solid;" align="right"><font size="2" class="_mt">355.2&nbsp;</font></div></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td> <div style="border-bottom: thin solid;" align="right"><font size="2" class="_mt">369.5&nbsp;</font></div></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td><font size="2" class="_mt"> </font> <div align="right"><font size="2" class="_mt">355.2&nbsp;</font></div><font size="2" class="_mt"> </font></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td><font size="2" class="_mt"> </font> <div align="right"><font size="2" class="_mt">369.5&nbsp;</font></div><font size="2" class="_mt"> </font></td></tr> <tr><td><font size="2" class="_mt">Dilutive effect of outstanding options and share-settled awards</font></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td> <div style="border-bottom: thin solid;" align="right"><font size="2" class="_mt">5.3&nbsp;</font></div></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td> <div style="border-bottom: thin solid;" align="right"><font size="2" class="_mt">5.4&nbsp;</font></div></td></tr> <tr><td><font size="2" class="_mt">Adjusted weighted-average shares outstanding</font></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td> <div style="border-bottom: thin solid;" align="right"><font size="2" class="_mt">360.5&nbsp;</font></div></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td> <div style="border-bottom: thin solid;" align="right"><font size="2" class="_mt">374.9&nbsp;</font></div></td></tr> <tr><td><font size="2" class="_mt">Earnings per share</font></td> <td> <div align="right"><font size="2" class="_mt">$</font></div></td> <td><font size="2" class="_mt"> </font> <div style="border-bottom: double;" align="right"><font size="2" class="_mt">0.91&nbsp;</font></div><font size="2" class="_mt"> </font></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td> <div align="right"><font size="2" class="_mt">$</font></div></td> <td><font size="2" class="_mt"> </font> <div style="border-bottom: double;" align="right"><font size="2" class="_mt">0.69&nbsp;</font></div><font size="2" class="_mt"> </font></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td> <div align="right"><font size="2" class="_mt">$</font></div></td> <td><font size="2" class="_mt"> </font> <div style="border-bottom: double;" align="right"><font size="2" class="_mt">0.90&nbsp;</font></div><font size="2" class="_mt"> </font></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td> <div align="right"><font size="2" class="_mt">$</font></div></td> <td><font size="2" class="_mt"> </font> <div style="border-bottom: double;" align="right"><font size="2" class="_mt">0.68&nbsp;</font></div><font size="2" class="_mt"> </font></td></tr></table><font size="2" class="_mt"> </font> <p align="left"><font size="2" class="_mt">During the first quarters of 2011 and 2010, dividend equivalent payments were made to holders of stock options and restricted stock units.&nbsp;&nbsp;For purposes of computing basic earnings per share, the total amount of dividend equivalent payments made to holders of stock options and restricted stock units were deducted from net income to determine income available to common stockholders.&nbsp;&nbsp;For purposes of computing diluted earnings per share, NS evaluates on a grant-by-grant basis those stock options and restricted stock units receiving dividend equivalent payments under the two-class and treasury stock methods to determine which method is the more dilutive for each award.&nbsp;&nbsp;For all stock option awards, for all periods presented, the two-class method was more dilutive and, as a result, net income was reduced by the amount of dividend equivalent payments on these awards to determine income available to common stockholders.&nbsp;&nbsp;For all restricted stock unit awards, for all periods presented, the treasury stock method was more dilutive and, as such, net income was not adjusted for the effect of these dividend equivalent payments.&nbsp;&nbsp;The diluted calculations exclude options having exercise prices exceeding the average market price of Common Stock as follows:&nbsp;<font class="_mt">zero</font> in 2011 and 2010. </font></p> </div>3.&nbsp;&nbsp;Earnings Per Share &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; Three months endedfalsefalsefalsefalsefalseOtherus-types:textBlockItemTypestringThis element may be used to capture the complete disclosure pertaining to an entity's earnings per share.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 128 -Paragraph 40 falsefalse12Earnings Per Share (Unaudited)UnKnownUnKnownUnKnownUnKnownfalsetrue XML 18 R22.xml IDEA: Stock-Based Compensation (Unaudited) (Details) 2.2.0.25truefalse40104 - Disclosure - Stock-Based Compensation (Unaudited) (Details)truefalseIn Millions, except Share data, unless otherwise specifiedfalse1falsefalseUSDfalsefalse1/1/2011 - 3/31/2011 USD ($) USD ($) / shares 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the award, which will be recognized in income or capitalized as part of the cost of an asset.No authoritative reference available.falsefalse4false0us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardAwardExpirationDatingus-gaaptruenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalseterselabel1falsefalsefalse00tenfalsefalsefalsefalsefalse2falsefalsefalse00falsefalsefalsefalsefalseOtherus-types:dateStringItemTypenormalizedstringReflects the dating as to when the share-based award expires as specified in the award agreement, which may be presented in a variety of ways (for example, year, month and year, day, month and year, quarter of a year).Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 123R -Paragraph A240 -Subparagraph a falsefalse5false0nsc_StockOptionGrantPricenscfalsenadurationThis element is used to disclose the grant price of the LTIP and TSOP 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the minimum range of expected volatilities used.No authoritative reference available.falsefalse10false0nsc_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedVolatilityRateMaximumnscfalsenadurationAn entity using a valuation technique with different volatilities during the contractual term must disclose the maximum range...falsefalsefalsefalsefalsefalsefalsefalsefalsefalseterselabel1truetruefalse0.320.32falsefalsefalsefalsefalse2falsetruefalse00falsefalsefalsefalsefalseOtherus-types:percentItemTypepureAn entity using a valuation technique with different volatilities during the contractual term must disclose the maximum range of expected volatilities used.No authoritative reference available.falsefalse11false0nsc_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsWeightedAverageExpectedVolatilityRatenscfalsenadurationAn entity using a valuation technique with different volatilities during the contractual term must disclose the...falsefalsefalsefalsefalsefalsefalsefalsefalsefalseterselabel1truetruefalse0.280.28falsefalsefalsefalsefalse2falsetruefalse00falsefalsefalsefalsefalseOtherus-types:percentItemTypepureAn entity using a valuation technique with different volatilities during the contractual term must disclose the weighted-average expected volatilityNo authoritative reference available.falsefalse12false0us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsRiskFreeInterestRateus-gaaptruenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalseterselabel1truetruefalse0.03420.0342falsefalsefalsefalsefalse2falsetruefalse00falsefalsefalsefalsefalseOtherus-types:percentItemTypepureThe risk-free interest rate assumption that is used in valuing an option on its own shares.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 123R -Paragraph A240 -Subparagraph e(2)(d) falsefalse13false0us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedTermus-gaaptruenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalseterselabel1truefalsefalse8.58.5falsefalsefalsefalsefalse2falsefalsefalse00falsefalsefalsefalsefalseOtherxbrli:decimalItemTypedecimalThe period of time a share-based award is expected to be outstanding. A share-based award's expected term shall be determined based on, among other factors, the instrument's contractual term and the effects of employees' expected exercise and post-vesting employment termination behavior. An entity is required to aggregate individual awards into relatively homogeneous groups.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 123R -Paragraph A240 -Subparagraph e(2)(a) Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Staff Accounting Bulletin (SAB) -Number Topic 14 -Section D -Subsection 2 falsefalse14false0us-gaap_StockIssuedDuringPeriodSharesStockOptionsExercisedus-gaaptruenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalseterselabel1truefalsefalse759193759193falsefalsefalsefalsefalse2truefalsefalse592110592110falsefalsefalsefalsefalseSharesxbrli:sharesItemTypesharesNumber of shares issued during the period as a result of the exercise of stock options.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher AICPA -Name Accounting Principles Board Opinion (APB) -Number 12 -Paragraph 10 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 04 -Article 3 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 29, 30 -Article 5 falsefalse15false0nsc_ProceedsFromStockOptionsExercisedExcludingTaxEffectnscfalsedebitdurationThe cash inflow associated with the amount received from holders exercising their stock option excluding the tax effect.falsefalsefalsefalsefalsefalsefalsefalsefalsefalseterselabel1truefalsefalse2000000020falsefalsefalsefalsefalse2truefalsefalse1200000012falsefalsefalsefalsefalseMonetaryxbrli:monetaryItemTypemonetaryThe cash inflow associated with the amount received from holders exercising their stock option excluding the tax effect.No authoritative reference available.falsefalse16false0us-gaap_TaxBenefitFromStockOptionsExercisedus-gaaptruedebitdurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalseterselabel1truefalsefalse1000000010falsefalsefalsefalsefalse2truefalsefalse70000007falsefalsefalsefalsefalseMonetaryxbrli:monetaryItemTypemonetaryReductions in the entity's income taxes that arise when compensation cost (from non-qualified stock options) recognized on the entity's tax return exceeds compensation cost from non-qualified stock options recognized on the income statement. This element increases net cash provided by operating activities.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 123R -Paragraph A132 falsefalse17false0us-gaap_StockIssuedDuringPeriodSharesRestrictedStockAwardNetOfForfeituresus-gaaptruenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalseterselabel1falsefalsefalse00falsefalsefalsefalsefalse2truefalsefalse433236433236falsefalsefalsefalsefalseSharesxbrli:sharesItemTypesharesNumber of shares issued during the period related to Restricted Stock Awards, net of any shares forfeited.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 29, 30 -Article 5 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher AICPA -Name Accounting Principles Board Opinion (APB) -Number 12 -Paragraph 10 Reference 3: 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<td><font size="2" class="_mt">&nbsp;</font></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td><font size="2" class="_mt">&nbsp;</font></td></tr> <tr><td><font size="2" class="_mt">&nbsp;</font></td> <td colspan="3"> <div align="center"><strong><font size="2" class="_mt">March 31,</font></strong></div></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td colspan="5"> <div align="center"><strong><font size="2" class="_mt">December 31,</font></strong></div></td></tr> <tr><td><font size="2" class="_mt">&nbsp;</font></td> <td colspan="3"> <div align="center"><u><strong><font size="2" class="_mt">2011</font></strong></u></div></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td colspan="5"> <div align="center"><u><strong><font size="2" class="_mt">2010</font></strong></u></div></td></tr> <tr><td><font size="2" class="_mt">&nbsp;</font></td> <td colspan="9"> <div align="center"><em><font size="2" class="_mt">($ in millions)&nbsp;&nbsp;&nbsp;&nbsp;</font></em></div></td></tr> <tr><td><font size="2" class="_mt">&nbsp;</font></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td><font size="2" class="_mt">&nbsp;</font></td></tr> <tr><td width="531"><font size="2" class="_mt">Short-term investments with average remaining maturities:</font></td> <td width="20"><font size="2" class="_mt">&nbsp;</font></td> <td width="60"><font size="2" class="_mt">&nbsp;</font></td> <td width="20"><font size="2" class="_mt">&nbsp;</font></td> <td width="20"><font size="2" class="_mt">&nbsp;</font></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td><font size="2" class="_mt">&nbsp;</font></td></tr> <tr><td><font size="2" class="_mt">&nbsp;&nbsp;Available-for-sale:</font></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td width="20"><font size="2" class="_mt">&nbsp;</font></td> <td width="20"><font size="2" class="_mt">&nbsp;</font></td> <td width="60"><font size="2" class="_mt">&nbsp;</font></td> <td width="20"><font size="2" class="_mt">&nbsp;</font></td> <td width="20"><font size="2" class="_mt">&nbsp;</font></td></tr> <tr><td><font size="2" class="_mt">&nbsp;&nbsp;&nbsp;Certificates of deposit,&nbsp;<font class="_mt">4</font> and&nbsp;<font class="_mt">5</font> months, respectively</font></td> <td> <div align="right"><font size="2" class="_mt">$</font></div></td> <td> <div align="right"><font size="2" class="_mt">56</font></div></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td> <div align="right"><font size="2" class="_mt">$</font></div></td> <td> <div align="right"><font size="2" class="_mt">76</font></div></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td><font size="2" class="_mt">&nbsp;</font></td></tr> <tr><td><font size="2" class="_mt">&nbsp;&nbsp;&nbsp;Corporate bonds,&nbsp;<font class="_mt">2</font> and&nbsp;<font class="_mt">4</font> months, respectively</font></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td> <div align="right"><font size="2" class="_mt">38</font></div></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td> <div align="right"><font size="2" class="_mt">64</font></div></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td><font size="2" class="_mt">&nbsp;</font></td></tr> <tr><td><font size="2" class="_mt">&nbsp;&nbsp;&nbsp;Commercial paper,&nbsp;<font class="_mt">2</font> and&nbsp;<font class="_mt">4</font> months, respectively</font></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td> <div style="border-left-color: #000; border-top-color: #000; border-bottom: #000 thin solid; border-right-color: #000;" align="right"><font size="2" class="_mt">25</font></div></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td> <div style="border-left-color: #000; border-top-color: #000; border-bottom: #000 thin solid; border-right-color: #000;" align="right"><font size="2" class="_mt">35</font></div></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td><font size="2" class="_mt">&nbsp;</font></td></tr> <tr><td><font size="2" class="_mt">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Total available-for-sale</font></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td> <div style="border-left-color: #000; border-top-color: #000; border-bottom: #000 thin solid; border-right-color: #000;" align="right"><font size="2" class="_mt">119</font></div></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td> <div style="border-left-color: #000; border-top-color: #000; border-bottom: #000 thin solid; border-right-color: #000;" align="right"><font size="2" class="_mt">175</font></div></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td><font size="2" class="_mt">&nbsp;</font></td></tr> <tr><td><font size="2" class="_mt">&nbsp;&nbsp;Held-to-maturity:</font></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td><font size="2" class="_mt">&nbsp;</font></td></tr> <tr><td><font size="2" class="_mt">&nbsp;&nbsp;&nbsp;Federal government bonds,&nbsp;<font class="_mt">7</font> and&nbsp;<font class="_mt">9</font> months, respectively</font></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td> <div align="right"><font size="2" class="_mt">74</font></div></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td> <div align="right"><font size="2" class="_mt">49</font></div></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td><font size="2" class="_mt">&nbsp;</font></td></tr> <tr><td><font size="2" class="_mt">&nbsp;&nbsp;&nbsp;Corporate bonds,&nbsp;<font class="_mt"><font class="_mt">7</font> </font>and&nbsp;<font class="_mt">10</font> months, respectively</font></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td> <div style="border-left-color: #000; border-top-color: #000; border-bottom: #000 thin solid; border-right-color: #000;" align="right"><font size="2" class="_mt">59</font></div></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td> <div style="border-left-color: #000; border-top-color: #000; border-bottom: #000 thin solid; border-right-color: #000;" align="right"><font size="2" class="_mt">59</font></div></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td><font size="2" class="_mt">&nbsp;</font></td></tr> <tr><td><font size="2" class="_mt">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Total held-to-maturity</font></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td> <div style="border-left-color: #000; border-top-color: #000; border-bottom: #000 thin solid; border-right-color: #000;" align="right"><font size="2" class="_mt">133</font></div></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td> <div style="border-left-color: #000; border-top-color: #000; border-bottom: #000 thin solid; border-right-color: #000;" align="right"><font size="2" class="_mt">108</font></div></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td><font size="2" class="_mt">&nbsp;</font></td></tr> <tr><td><font size="2" class="_mt">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Total short-term investments</font></td> <td> <div align="right"><font size="2" class="_mt">$</font></div></td> <td> <div style="border-bottom: double;" align="right"><font size="2" class="_mt">252</font></div></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td> <div align="right"><font size="2" class="_mt">$</font></div></td> <td> <div style="border-bottom: double;" align="right"><font size="2" class="_mt">283</font></div></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td><font size="2" class="_mt">&nbsp;</font></td></tr></table> </div>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; March 31, &nbsp; December 31, &nbsp; 2011 &nbsp; 2010 &nbsp; ($ infalsefalsefalsefalsefalseOtherus-types:textBlockItemTypestringA container for the investment holdings table and related concepts. The investment holdings table lists the long positions of investments for the entity. It contains investments in unaffiliated issuers. The investments include securities and non securities (i.e. commodities and futures contracts).Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 12C -Article 12 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 12 -Article 12 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 13 -Article 12 falsefalse12Investments (Unaudited) (Tables)UnKnownUnKnownUnKnownUnKnownfalsetrue XML 21 R32.xml IDEA: Commitments and Contingencies (Unaudited) (Details) 2.2.0.25falsefalse41004 - Disclosure - Commitments and Contingencies (Unaudited) (Details)truefalsefalse1falsefalseUSDfalsefalse1/1/2011 - 3/31/2011 USD ($) USD ($) / shares $Duration_1_1_2011_To_3_31_2011http://www.sec.gov/CIK0000702165duration2011-01-01T00:00:002011-03-31T00:00:00Unit12Standardhttp://www.xbrl.org/2003/iso4217USDiso42170Unit14Dividehttp://www.xbrl.org/2003/iso4217USDiso4217http://www.xbrl.org/2003/instancesharesxbrli0Unit1Standardhttp://www.xbrl.org/2003/instancesharesxbrli0Unit13Standardhttp://www.xbrl.org/2003/instancepurexbrli0USDUSD$2falsefalseUSDfalsefalse1/1/2010 - 3/31/2010 USD ($) USD ($) / shares $Duration_1_1_2010_To_3_31_2010http://www.sec.gov/CIK0000702165duration2010-01-01T00:00:002010-03-31T00:00:00Unit12Standardhttp://www.xbrl.org/2003/iso4217USDiso42170Unit1Standardhttp://www.xbrl.org/2003/instancesharesxbrli0Unit14Dividehttp://www.xbrl.org/2003/iso4217USDiso4217http://www.xbrl.org/2003/instancesharesxbrli0USDUSD$3falsefalseUSDfalsefalse12/31/2010 USD ($) USD ($) / shares $As_Of_12_31_2010http://www.sec.gov/CIK0000702165instant2010-12-31T00:00:000001-01-01T00:00:00Unit12Standardhttp://www.xbrl.org/2003/iso4217USDiso42170Unit1Standardhttp://www.xbrl.org/2003/instancesharesxbrli0Unit14Dividehttp://www.xbrl.org/2003/iso4217USDiso4217http://www.xbrl.org/2003/instancesharesxbrli0Unit13Standardhttp://www.xbrl.org/2003/instancepurexbrli0USDUSD$2true0nsc_CommitmentsAndContingenciesDisclosureAbstractnscfalsenadurationCommitments And Contingencies Disclosure [Abstract]falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00falsefalsefalsefalsefalse2falsefalsefalse00falsefalsefalsefalsefalse3falsefalsefalse00falsefalsefalsefalsefalseOtherxbrli:stringItemTypestringCommitments And Contingencies Disclosure [Abstract]falsefalse3false0nsc_ArbitrationClaimSettlementnscfalsedebitdurationThis element is used to disclose the settlement amount of an arbitration claim.falsefalsefalsefalsefalsefalsefalsefalsefalsefalseterselabel1falsefalsefalse00falsefalsefalsefalsefalse2truefalsefalse100000000100000000falsetruefalsefalsefalse3falsefalsefalse00falsefalsefalsefalsefalseMonetaryxbrli:monetaryItemTypemonetaryThis element is used to disclose the settlement amount of an arbitration claim.No authoritative reference available.falsefalse4false0nsc_ContestedPortionOfArbitrationnscfalsedebitdurationThis element is used to disclose the contested portion of arbitration with one of the company's insurance carriers.falsefalsefalsefalsefalsefalsefalsefalsefalsefalseterselabel1truefalsefalse4300000043000000falsefalsefalsefalsefalse2falsefalsefalse00falsefalsefalsefalsefalse3falsefalsefalse00falsefalsefalsefalsefalseMonetaryxbrli:monetaryItemTypemonetaryThis element is used to disclose the contested portion of arbitration with one of the company's insurance carriers.No authoritative reference available.falsefalse5false0nsc_ArbitrationDecisionExpensenscfalsedebitdurationThis element is used to disclose the amount of receivables associated with the contested portion of arbitration.falsefalsefalsefalsefalsefalsefalsefalsefalsefalseterselabel1truefalsefalse4300000043000000falsefalsefalsefalsefalse2falsefalsefalse00falsefalsefalsefalsefalse3falsefalsefalse00falsefalsefalsefalsefalseMonetaryxbrli:monetaryItemTypemonetaryThis element is used to disclose the amount of receivables associated with the contested portion of arbitration.No authoritative reference available.falsefalse6false0nsc_OtherArbitrationExpensenscfalsedebitdurationThis element is used to disclose the amount of other receivables associated with the arbitration claim for which recovery is...falsefalsefalsefalsefalsefalsefalsefalsefalsefalseterselabel1truefalsefalse1500000015000000falsefalsefalsefalsefalse2falsefalsefalse00falsefalsefalsefalsefalse3falsefalsefalse00falsefalsefalsefalsefalseMonetaryxbrli:monetaryItemTypemonetaryThis element is used to disclose the amount of other receivables associated with the arbitration claim for which recovery is no longer probable.No authoritative reference available.falsefalse7false0us-gaap_AccrualForEnvironmentalLossContingenciesus-gaaptruecreditinstantNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalseterselabel1truefalsefalse3200000032000000falsefalsefalsefalsefalse2falsefalsefalse00falsefalsefalsefalsefalse3truefalsefalse3300000033000000falsefalsefalsefalsefalseMonetaryxbrli:monetaryItemTypemonetaryTotal costs accrued as of the balance sheet date for environmental loss contingencies.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher AICPA -Name Statement of Position (SOP) -Number 96-1 -Paragraph 161 -Subparagraph a Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 5 -Paragraph 9 falsefalse8false0us-gaap_AccrualForEnvironmentalLossContingenciesUndiscountedDueWithinOneYearus-gaaptruecreditinstantNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalseterselabel1truefalsefalse1200000012000000falsefalsefalsefalsefalse2falsefalsefalse00falsefalsefalsefalsefalse3truefalsefalse1200000012000000falsefalsefalsefalsefalseMonetaryxbrli:monetaryItemTypemonetaryThe portion of the estimated aggregate undiscounted amount of the accrual for environmental loss contingencies that is expected to be paid within one year of the balance sheet date.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Staff Accounting Bulletin (SAB) -Number Topic 5 -Section Y -Paragraph Question 1 falsefalse9false0nsc_EnvironmentalCleanupLocationsnscfalsenadurationThis element is used to disclose the number of known locations of environmental loss contingencies.falsefalsefalsefalsefalsefalsefalsefalsefalsefalseterselabel1truefalsefalse142142falsefalsefalsefalsefalse2falsefalsefalse00falsefalsefalsefalsefalse3falsefalsefalse00falsefalsefalsefalsefalseOtherxbrli:positiveIntegerItemTypepositiveintegerThis element is used to disclose the number of known locations of environmental loss contingencies.No authoritative reference available.falsefalse10false0nsc_EnvironmentalLocationsRepresentativeSamplenscfalsenainstantThis element is used to disclose a representative sample of the total number of environmental locations.falsefalsefalsefalsefalsefalsefalsefalsefalsefalseterselabel1falsefalsefalse00ninefalsefalsefalsefalsefalse2falsefalsefalse00falsefalsefalsefalsefalse3falsefalsefalse00falsefalsefalsefalsefalseOtherxbrli:stringItemTypestringThis element is used to disclose a representative sample of the total number of environmental locations.No authoritative reference available.falsefalse11false0nsc_EnvironmentalLocationsRepresentativeSampleLiabilitynscfalsedebitinstantThis element is used to disclose the liability associated with the representative sample of environmental locations.falsefalsefalsefalsefalsefalsefalsefalsefalsefalseterselabel1truefalsefalse1300000013000000falsefalsefalsefalsefalse2falsefalsefalse00falsefalsefalsefalsefalse3falsefalsefalse00falsefalsefalsefalsefalseMonetaryxbrli:monetaryItemTypemonetaryThis element is used to disclose the liability associated with the representative sample of environmental locations.No authoritative reference available.falsefalse12false0nsc_EnvironmentalLocationsRepresentativeSampleLiabilityPeriodnscfalsenainstantEnvironmental Locations Representative Sample Liability Periodfalsefalsefalsefalsefalsefalsefalsefalsefalsefalseterselabel1truefalsefalse55falsefalsefalsefalsefalse2falsefalsefalse00falsefalsefalsefalsefalse3falsefalsefalse00falsefalsefalsefalsefalseOtherxbrli:positiveIntegerItemTypepositiveintegerEnvironmental Locations Representative Sample Liability PeriodNo authoritative reference available.falsefalse13false0nsc_EnvironmentalResponsiblePartyInConjunctionWithOtherPartiesnscfalsenainstantThis element is used to disclose the number of locations the company or its subsidiaries in conjunction with other parties...falsefalsefalsefalsefalsefalsefalsefalsefalsefalseterselabel1truefalsefalse3030falsefalsefalsefalsefalse2falsefalsefalse00falsefalsefalsefalsefalse3falsefalsefalse00falsefalsefalsefalsefalseOtherxbrli:positiveIntegerItemTypepositiveintegerThis element is used to disclose the number of locations the company or its subsidiaries in conjunction with other parties have been identified as potentially responsible parties by the Environmental Protection Agency (EPA).No authoritative reference available.falsefalse14false0nsc_SelfInsuredForBodilyInjuryAndPropertyDamageToThirdPartiesUpTonscfalsedebitdurationThis element is used to disclose the amount up to which the company is self-insured per occurrence for bodily injury and...falsefalsefalsefalsefalsefalsefalsefalsefalsefalseterselabel1truefalsefalse5000000050000000falsefalsefalsefalsefalse2falsefalsefalse00falsefalsefalsefalsefalse3falsefalsefalse00falsefalsefalsefalsefalseMonetaryxbrli:monetaryItemTypemonetaryThis element is used to disclose the amount up to which the company is self-insured per occurrence for bodily injury and property damage to third parties.No authoritative reference available.falsefalse15false0nsc_SelfInsuredForBodilyInjuryAndPropertyDamageToThirdPartiesAbovenscfalsedebitdurationThis element is used to disclose the amount above which the company is self-insured per occurrence for bodily injury and...falsefalsefalsefalsefalsefalsefalsefalsefalsefalseterselabel1truefalsefalse10000000001000000000falsefalsefalsefalsefalse2falsefalsefalse00falsefalsefalsefalsefalse3falsefalsefalse00falsefalsefalsefalsefalseMonetaryxbrli:monetaryItemTypemonetaryThis element is used to disclose the amount above which the company is self-insured per occurrence for bodily injury and property damage to third parties.No authoritative reference available.falsefalse16false0nsc_SelfInsuredForPropertyOwnedUpTonscfalsedebitdurationThis element is used to disclose the amount up to which Norfolk Southern is self-insured per occurrence for property owned or...falsefalsefalsefalsefalsefalsefalsefalsefalsefalseterselabel1truefalsefalse2500000025000000falsefalsefalsefalsefalse2falsefalsefalse00falsefalsefalsefalsefalse3falsefalsefalse00falsefalsefalsefalsefalseMonetaryxbrli:monetaryItemTypemonetaryThis element is used to disclose the amount up to which Norfolk Southern is self-insured per occurrence for property owned or in the care, custody or control of Norfolk Southern.No authoritative reference available.falsefalse17false0nsc_SelfInsuredForPropertyOwnedAbovenscfalsedebitdurationThis element is used to disclose the amount above which Norfolk Southern is self-insured per occurrence for property owned or...falsefalsefalsefalsefalsefalsefalsefalsefalsefalseterselabel1truefalsefalse175000000175000000falsefalsefalsefalsefalse2falsefalsefalse00falsefalsefalsefalsefalse3falsefalsefalse00falsefalsefalsefalsefalseMonetaryxbrli:monetaryItemTypemonetaryThis element is used to disclose the amount above which Norfolk Southern is self-insured per occurrence for property owned or in the care, custody or control of Norfolk Southern.No authoritative reference available.falsefalse18false0us-gaap_LongTermPurchaseCommitmentAmountus-gaaptruecreditdurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalseterselabel1truefalsefalse12000000001200000000falsetruefalsefalsefalse2falsefalsefalse00falsefalsefalsefalsefalse3falsefalsefalse00falsefalsefalsefalsefalseMonetaryxbrli:monetaryItemTypemonetaryThe minimum amount the entity agreed to spend under the long-term purchase commitment.No authoritative reference available.falsefalse317Commitments and Contingencies (Unaudited) (Details) (USD $)NoRoundingUnKnownUnKnownUnKnowntruetrue XML 22 R12.xml IDEA: Pensions and Other Postretirement Benefits (Unaudited) 2.2.0.25falsefalse10701 - Disclosure - Pensions and Other Postretirement Benefits (Unaudited)truefalsefalse1falsefalseUSDfalsefalse1/1/2011 - 3/31/2011 USD ($) USD ($) / shares $Duration_1_1_2011_To_3_31_2011http://www.sec.gov/CIK0000702165duration2011-01-01T00:00:002011-03-31T00:00:00Unit12Standardhttp://www.xbrl.org/2003/iso4217USDiso42170Unit14Dividehttp://www.xbrl.org/2003/iso4217USDiso4217http://www.xbrl.org/2003/instancesharesxbrli0Unit1Standardhttp://www.xbrl.org/2003/instancesharesxbrli0Unit13Standardhttp://www.xbrl.org/2003/instancepurexbrli0USDUSD$2true0us-gaap_DefinedContributionPensionAndOtherPostretirementPlansDisclosureAbstractus-gaaptruenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00falsefalsefalsefalsefalseOtherxbrli:stringItemTypestringNo definition available.falsefalse3false0us-gaap_PensionAndOtherPostretirementBenefitsDisclosureTextBlockus-gaaptruenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalseterselabel1falsefalsefalse00<div> <div style="font-size: 20px;"> <p align="left"><strong><font size="2" class="_mt">7.&nbsp;&nbsp;Pensions and Other Postretirement Benefits</font></strong></p> <p align="left"><font size="2" class="_mt">Norfolk Southern and certain subsidiaries have both funded and unfunded defined benefit pension plans covering principally salaried employees.&nbsp;&nbsp;Norfolk Southern and certain subsidiaries also provide specified health care and death benefits to eligible retired employees and their dependents.&nbsp;&nbsp;Under the present plans, which may be amended or terminated at NS' option, a defined percentage of health care expenses are covered, reduced by any deductibles, co-payments, Medicare payments, and in some cases, coverage provided under other group insurance policies.</font></p><font size="2" class="_mt"> </font> <table style="font-size: 20px;"> <tr><td><font size="2" class="_mt">&nbsp;</font></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td><font size="2" class="_mt">&nbsp;</font></td></tr> <tr><td><font size="2" class="_mt">&nbsp;</font></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td colspan="10"> <div align="center"><strong><font size="2" class="_mt">Three months ended March 31,</font></strong></div></td></tr> <tr><td width="389"><font size="2" class="_mt">&nbsp;</font></td> <td width="20"><font size="2" class="_mt">&nbsp;</font></td> <td width="60"> <div align="center"><u><strong><font size="2" class="_mt">2011</font></strong></u></div></td> <td width="20"><font size="2" class="_mt">&nbsp;</font></td> <td width="20"><font size="2" class="_mt">&nbsp;</font></td> <td width="60"> <div align="center"><u><strong><font size="2" class="_mt">2010</font></strong></u></div></td> <td width="20"><font size="2" class="_mt">&nbsp;</font></td> <td width="20"><font size="2" class="_mt">&nbsp;</font></td> <td width="60"> <div align="center"><u><strong><font size="2" class="_mt">2011</font></strong></u></div></td> <td width="20"><font size="2" class="_mt">&nbsp;</font></td> <td width="20"><font size="2" class="_mt">&nbsp;</font></td> <td width="60"> <div align="center"><u><strong><font size="2" class="_mt">2010</font></strong></u></div></td></tr> <tr><td><font size="2" class="_mt">&nbsp;</font></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td colspan="4"> <div align="center"><u><strong><font size="2" class="_mt">Pension Benefits</font></strong></u></div></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td colspan="4"> <div align="center"><u><strong><font size="2" class="_mt">Other Benefits</font></strong></u></div></td></tr> <tr><td><font size="2" class="_mt">&nbsp;</font></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td colspan="4"> <div align="center"><em><font size="2" class="_mt">($ in millions)</font></em></div></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td><font size="2" class="_mt">&nbsp;</font></td></tr> <tr><td><font size="2" class="_mt">&nbsp;</font></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td><font size="2" class="_mt">&nbsp;</font></td></tr> <tr><td><font size="2" class="_mt">Service cost</font></td> <td> <div align="right"><font size="2" class="_mt">$</font></div></td> <td> <div align="right"><font size="2" class="_mt">7&nbsp;</font></div></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td> <div align="right"><font size="2" class="_mt">$</font></div></td> <td> <div align="right"><font size="2" class="_mt">7&nbsp;</font></div></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td> <div align="right"><font size="2" class="_mt">$</font></div></td> <td> <div align="right"><font size="2" class="_mt">4&nbsp;</font></div></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td> <div align="right"><font size="2" class="_mt">$</font></div></td> <td> <div align="right"><font size="2" class="_mt">4&nbsp;</font></div></td></tr> <tr><td><font size="2" class="_mt">Interest cost</font></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td> <div align="right"><font size="2" class="_mt">23&nbsp;</font></div></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td> <div align="right"><font size="2" class="_mt">24&nbsp;</font></div></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td> <div align="right"><font size="2" class="_mt">15&nbsp;</font></div></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td> <div align="right"><font size="2" class="_mt">15&nbsp;</font></div></td></tr> <tr><td><font size="2" class="_mt">Expected return on plan assets</font></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td> <div align="right"><font size="2" class="_mt">(35)</font></div></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td> <div align="right"><font size="2" class="_mt">(36)</font></div></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td> <div align="right"><font size="2" class="_mt">(4)</font></div></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td> <div align="right"><font size="2" class="_mt">(4)</font></div></td></tr> <tr><td><font size="2" class="_mt">Amortization of net losses</font></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td> <div align="right"><font size="2" class="_mt">17&nbsp;</font></div></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td> <div align="right"><font size="2" class="_mt">12&nbsp;</font></div></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td> <div align="right"><font size="2" class="_mt">11&nbsp;</font></div></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td> <div align="right"><font size="2" class="_mt">12&nbsp;</font></div></td></tr> <tr><td><font size="2" class="_mt">Amortization of prior service cost</font></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td> <div style="border-bottom: thin solid;" align="right"><font size="2" class="_mt">-&nbsp;</font></div></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td> <div style="border-bottom: thin solid;" align="right"><font size="2" class="_mt">1&nbsp;</font></div></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td> <div style="border-bottom: thin solid;" align="right"><font size="2" class="_mt">-&nbsp;</font></div></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td> <div style="border-bottom: thin solid;" align="right"><font size="2" class="_mt">-&nbsp;</font></div></td></tr> <tr><td><font size="2" class="_mt">&nbsp;&nbsp;&nbsp;&nbsp;Net cost</font></td> <td> <div align="right"><font size="2" class="_mt">$</font></div></td> <td> <div style="border-bottom: double;" align="right"><font size="2" class="_mt">12&nbsp;</font></div></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td> <div align="right"><font size="2" class="_mt">$</font></div></td> <td> <div style="border-bottom: double;" align="right"><font size="2" class="_mt">8&nbsp;</font></div></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td> <div align="right"><font size="2" class="_mt">$</font></div></td> <td> <div style="border-bottom: double;" align="right"><font size="2" class="_mt">26&nbsp;</font></div></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td> <div align="right"><font size="2" class="_mt">$</font></div></td> <td> <div style="border-bottom: double;" 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This excludes temporary equity and is sometimes called permanent equity.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher AICPA -Name Accounting Research Bulletin (ARB) -Number 51 -Paragraph 25 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher AICPA -Name Accounting Research Bulletin (ARB) -Number 51 -Paragraph 26 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher AICPA -Name Accounting Research Bulletin (ARB) -Number 51 -Paragraph A3 -Appendix A truefalse32false0us-gaap_LiabilitiesAndStockholdersEquityus-gaaptruecreditinstantNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalsetotallabel1truefalsefalse2772800000027728falsetruefalsefalsefalse2truefalsefalse2819900000028199falsetruefalsefalsefalseMonetaryxbrli:monetaryItemTypemonetaryTotal of all Liabilities and Stockholders' Equity items.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 32 -Article 5 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 03 -Paragraph 25 -Article 7 truefalse230Consolidated Balance Sheets (Unaudited) (USD $)MillionsUnKnownUnKnownUnKnownfalsetrue XML 24 R14.xml IDEA: Fair Value (Unaudited) 2.2.0.25falsefalse10901 - Disclosure - Fair Value (Unaudited)truefalsefalse1falsefalseUSDfalsefalse1/1/2011 - 3/31/2011 USD ($) USD ($) / shares $Duration_1_1_2011_To_3_31_2011http://www.sec.gov/CIK0000702165duration2011-01-01T00:00:002011-03-31T00:00:00Unit12Standardhttp://www.xbrl.org/2003/iso4217USDiso42170Unit14Dividehttp://www.xbrl.org/2003/iso4217USDiso4217http://www.xbrl.org/2003/instancesharesxbrli0Unit1Standardhttp://www.xbrl.org/2003/instancesharesxbrli0Unit13Standardhttp://www.xbrl.org/2003/instancepurexbrli0USDUSD$2true0nsc_FairValueDisclosuresAbstractnscfalsenadurationFair Value Disclosures [Abstract]falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00falsefalsefalsefalsefalseOtherxbrli:stringItemTypestringFair Value Disclosures [Abstract]falsefalse3false0us-gaap_FairValueMeasurementInputsDisclosureTextBlockus-gaaptruenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalseterselabel1falsefalsefalse00<div> <p align="left"><strong><font size="2" class="_mt">9.&nbsp;&nbsp;Fair Value</font></strong></p> <p align="left"><strong><font size="2" class="_mt">Fair Value Measurements</font></strong></p> <p align="left"><font size="2" class="_mt">ASC 820-10, <em>"Fair Value Measurements,"</em> established a framework for measuring fair value and a fair value hierarchy that prioritizes the inputs to valuation techniques used to measure fair value into three broad levels, as follows: </font></p> <blockquote> <center> <table style="font-size: 20px;" border="0" width="905"> <tr><td valign="top" width="79"> <p align="left"><font size="2" class="_mt">Level 1</font></p></td> <td valign="top" width="538"> <p align="left"><font size="2" class="_mt">Inputs to the valuation methodology are unadjusted quoted prices for identical assets or liabilities in active markets that NS has the ability to access.</font></p></td></tr> <tr><td> <p align="left">&nbsp;</p></td> <td> <p align="left">&nbsp;</p></td></tr> <tr><td> <p align="left"><font size="2" class="_mt">Level 2</font></p></td> <td> <p align="left"><font size="2" class="_mt">Inputs to the valuation methodology include:</font></p></td></tr> <tr><td colspan="2"> <blockquote> <blockquote> <ul> <li> <div align="left"><font style="font-family: times new roman;" size="2" class="_mt">Quoted prices for similar assets or liabilities in active markets; <br /></font></div> </li> <li> <div align="left"><font style="font-family: times new roman;" size="2" class="_mt">Quoted prices for identical or similar assets or liabilities in inactive markets; <br /></font></div> </li> <li> <div align="left"><font style="font-family: times new roman;" size="2" class="_mt">Inputs other than quoted prices that are observable for the asset or liability; <br /></font></div> </li> <li> <div align="left"><font style="font-family: times new roman;" size="2" class="_mt">Inputs that are derived principally from or corroborated by observable market data by correlation or other means. </font></div></li></ul></blockquote></blockquote></td></tr> <tr><td> <p align="left">&nbsp;</p></td> <td> <p align="left">&nbsp;</p></td></tr> <tr><td> <p align="left">&nbsp;</p></td> <td> <p align="left"><font size="2" class="_mt">If the asset or liability has a specified (contractual) term, the Level 2 input must be observable for substantially the full term of the asset or liability.</font></p></td></tr> <tr><td> <p align="left">&nbsp;</p></td> <td> <p align="left">&nbsp;</p></td></tr> <tr><td valign="top"> <p align="left"><font size="2" class="_mt">Level 3</font></p></td> <td valign="top"> <p align="left"><font size="2" class="_mt">Inputs to the valuation methodology are unobservable and significant to the fair value measurement.</font></p></td></tr></table></center></blockquote> <p align="left"><font size="2" class="_mt">The asset's or liability's fair value measurement level within the hierarchy is based on the lowest level of any input that is significant to the fair value measurement.&nbsp;&nbsp;At March 31, 2011 and December 31, 2010, for assets measured at fair value on a recurring basis, there were $<font class="_mt">119</font> million and $<font class="_mt">175</font> million of available-for-sale securities valued under level 2 of the fair value hierarchy, respectively.&nbsp;&nbsp;There were no available-for-sale securities valued under level 1 or level 3 valuation techniques. </font></p> <p align="left"><strong><font size="2" class="_mt">Fair Values of Financial Instruments</font></strong></p> <p align="left"><font size="2" class="_mt">NS has evaluated the fair values of financial instruments and methods used to determine those fair values.&nbsp;&nbsp;The fair values of "Cash and cash equivalents," "Short-term investments," "Accounts receivable," "Accounts payable," and "Short-term debt" approximate carrying values because of the short maturity of these financial instruments.&nbsp;&nbsp;The carrying value of corporate-owned life insurance is recorded at cash surrender value and, accordingly, approximates fair value.&nbsp;&nbsp;The carrying amounts and estimated fair values for the remaining financial instruments, excluding derivatives and investments accounted for under the equity method, consisted of the following:</font></p><font size="2" class="_mt"> </font> <table style="font-size: 20px;" width="882"> <tr><td><font size="2" class="_mt">&nbsp;</font></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td><font size="2" class="_mt">&nbsp;</font></td></tr> <tr><td><font size="2" class="_mt">&nbsp;</font></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td colspan="4"> <div align="center"><strong><font size="2" class="_mt">March 31, 2011</font></strong></div></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td colspan="4"> <div align="center"><strong><font size="2" class="_mt">December 31, 2010</font></strong></div></td></tr> <tr><td width="370"><font size="2" class="_mt">&nbsp;</font></td> <td width="20"><font size="2" class="_mt">&nbsp;</font></td> <td colspan="2"> <div align="center"><strong><font size="2" class="_mt">Carrying</font></strong></div></td> <td colspan="2"> <div align="center"><strong><font size="2" class="_mt">Fair</font></strong></div></td> <td width="20"><font size="2" class="_mt">&nbsp;</font></td> <td width="20"><font size="2" class="_mt">&nbsp;</font></td> <td colspan="2"> <div align="center"><strong><font size="2" class="_mt">Carrying</font></strong></div></td> <td colspan="2"> <div align="center"><strong><font size="2" class="_mt">Fair</font></strong></div></td></tr> <tr><td><font size="2" class="_mt">&nbsp;</font></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td colspan="2"> <div align="center"><u><strong><font size="2" class="_mt">Amount</font></strong></u></div></td> <td colspan="2"> <div align="center"><u><strong><font size="2" class="_mt">Value</font></strong></u></div></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td colspan="2"> <div align="center"><u><strong><font size="2" class="_mt">Amount</font></strong></u></div></td> <td colspan="2"> <div align="center"><u><strong><font size="2" class="_mt">Value</font></strong></u></div></td></tr> <tr><td><font size="2" class="_mt">&nbsp;</font></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td width="60"><font size="2" class="_mt">&nbsp;</font></td> <td width="20"><font size="2" class="_mt">&nbsp;</font></td> <td width="20"><font size="2" class="_mt">&nbsp;</font></td> <td colspan="4"> <div align="center"><em><font size="2" class="_mt">($ in millions)</font></em></div></td> <td width="20"><font size="2" class="_mt">&nbsp;</font></td> <td width="20"><font size="2" class="_mt">&nbsp;</font></td> <td width="60"><font size="2" class="_mt">&nbsp;</font></td></tr> <tr><td><font size="2" class="_mt">&nbsp;</font></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td width="60"><font size="2" class="_mt">&nbsp;</font></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td width="60"><font size="2" class="_mt">&nbsp;</font></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td><font size="2" class="_mt">&nbsp;</font></td></tr> <tr><td><font size="2" class="_mt">Long-term investments</font></td> <td> <div align="right"><font size="2" class="_mt">$</font></div></td> <td><font size="2" class="_mt"> </font> <div align="right"><font size="2" class="_mt">170&nbsp;</font></div><font size="2" class="_mt"> </font></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td> <div align="right"><font size="2" class="_mt">$</font></div></td> <td><font size="2" class="_mt"> </font> <div align="right"><font size="2" class="_mt">197&nbsp;</font></div><font size="2" class="_mt"> </font></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td> <div align="right"><font size="2" class="_mt">$</font></div></td> <td><font size="2" class="_mt"> </font> <div align="right"><font size="2" class="_mt">192&nbsp;</font></div><font size="2" class="_mt"> </font></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td> <div align="right"><font size="2" class="_mt">$</font></div></td> <td><font size="2" class="_mt"> </font> <div align="right"><font size="2" class="_mt">222&nbsp;</font></div><font size="2" class="_mt"> </font></td></tr> <tr><td><font size="2" class="_mt">Long-term debt, including current maturities</font></td> <td> <div align="right"><font size="2" class="_mt">$</font></div></td> <td><font size="2" class="_mt"> </font> <div align="right"><font size="2" class="_mt">(6,617)</font></div><font size="2" class="_mt"> </font></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td> <div align="right"><font size="2" class="_mt">$</font></div></td> <td><font size="2" class="_mt"> </font> <div align="right"><font size="2" class="_mt">(7,768)</font></div><font size="2" class="_mt"> </font></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td> <div align="right"><font size="2" class="_mt">$</font></div></td> <td><font size="2" class="_mt"> </font> <div align="right"><font size="2" class="_mt">(6,925)</font></div><font size="2" class="_mt"> </font></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td> <div align="right"><font size="2" class="_mt">$</font></div></td> <td><font size="2" class="_mt"> </font> <div align="right"><font size="2" class="_mt">(7,971)</font></div><font size="2" class="_mt"> </font></td></tr></table><font size="2" class="_mt"><br /></font> <p align="left"><font size="2" class="_mt">Underlying net assets were used to estimate the fair value of investments with the exception of notes receivable, which are based on future discounted cash flows.&nbsp;&nbsp;The fair values of long-term debt were estimated based on quoted market prices or discounted cash flows using current interest rates for debt with similar terms, company rating, and remaining maturity.</font></p> <p align="left"><font size="2" class="_mt">Carrying amounts of available-for-sale securities reflect immaterial unrealized holding gains on March 31, 2011 and December 31, 2010.&nbsp;&nbsp;Sales of available-for-sale securities were $<font class="_mt">55</font> million and $<font class="_mt">20</font> million for the three months ended March 31, 2011 and 2010, respectively.</font></p> </div>9.&nbsp;&nbsp;Fair Value Fair Value Measurements ASC 820-10, "Fair Value Measurements," established a framework for measuring fair value and a fair valuefalsefalsefalsefalsefalseOtherus-types:textBlockItemTypestringThis element represents the disclosure related to the fair value measurement of assets and liabilities which includes [financial] instruments measured at fair value that are classified in stockholders' equity. 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available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalseterselabel1falsefalsefalse00<div> <div style="font-size: 20px;"> <p><strong><font size="2" class="_mt">10.&nbsp;&nbsp;Commitments and Contingencies</font></strong></p> <p align="left"><strong><font size="2" class="_mt">Lawsuits</font></strong></p> <p align="left"><font size="2" class="_mt">Norfolk Southern and/or certain subsidiaries are defendants in numerous lawsuits and other claims relating principally to railroad operations.&nbsp;&nbsp;When management concludes that it is probable that a liability has been incurred and the amount of the liability can be reasonably estimated, it is accrued through a charge to earnings.&nbsp;&nbsp;While the ultimate amount of liability incurred in any of these lawsuits and claims is dependent on future developments, in management's opinion, the recorded liability is adequate to cover the future payment of such liability and claims.&nbsp;&nbsp;However, the final outcome of any of these lawsuits and claims cannot be predicted with certainty, and unfavorable or unexpected outcomes could result in additional accruals that could be significant to results of operations in a particular year or quarter.&nbsp;&nbsp;Any adjustments to the recorded liability will be reflected in earnings in the periods in which such adjustments are known.</font></p> <p align="left"><font size="2" class="_mt">Two of NS' customers, DuPont and South Mississippi Electric Power Association (SMEPA), have filed rate reasonableness complaints at the Surface Transportation Board (STB) alleging that the NS tariff rates for transportation of regulated movements are unreasonable.&nbsp;&nbsp;NS is disputing these allegations.&nbsp;&nbsp;Since June 1, 2009, in the case of DuPont, and since January 1, 2011, in the case of SMEPA, NS has been billing and collecting amounts from the customers based on the challenged tariff rates.&nbsp;&nbsp;Management presently expects resolution of these cases to occur in late 2012 or 2013.&nbsp;&nbsp;The cases have not progressed to a point where management can provide an estimate of the possible loss or range of loss, if any.</font></p> <p align="left"><strong><font size="2" class="_mt">Casualty Claims</font></strong></p> <p align="left"><font size="2" class="_mt">Casualty claims include employee personal injury and occupational claims as well as third-party claims, all exclusive of legal costs.&nbsp;&nbsp;To aid in valuing its personal injury liability and determining the amount to accrue with respect to such claim during the year, NS' management utilizes studies prepared by an independent consulting actuarial firm.&nbsp;&nbsp;Job-related accidental injury and occupational claims are subject to the Federal Employers' Liability Act (FELA), which is applicable only to railroads.&nbsp;&nbsp;FELA's fault-based system produces results that are unpredictable and inconsistent as compared with a no-fault workers' compensation system.&nbsp;&nbsp;The variability inherent in this system could result in actual costs being different from the liability recorded.&nbsp;&nbsp;While the ultimate amount of claims incurred is dependent on future developments, in management's opinion, the recorded liability is adequate to cover the future payments of claims and is supported by the most recent actuarial study.&nbsp;&nbsp;In all cases, NS records a liability when the expected loss for the claim is both probable and estimable.</font></p> <p align="left"><font size="2" class="_mt">The Consolidated Balance Sheets reflect long-term receivables for estimated recoveries from NS' insurance carriers for claims associated with the January 6, 2005, derailment in Graniteville, S.C.&nbsp;&nbsp;During the first quarter of 2010, NS settled an arbitration claim ($<font class="_mt">100</font> million) with one of its insurance carriers with no adverse effect on NS' financial position, results of operations, or liquidity.&nbsp;&nbsp;In March 2011, NS received an unfavorable ruling for an arbitration claim with another insurance carrier, and was denied recovery of the contested portion ($<font class="_mt">43</font> million) of the claim.&nbsp;&nbsp;As a result, NS recorded a $<font class="_mt">43</font> million expense during the first quarter of 2011 for the receivables associated with the contested portion of the claim and a $<font class="_mt">15</font> million expense for other receivables affected by the ruling for which recovery is no longer probable.</font></p> <p align="left"><font size="2" class="_mt"><strong>Employee personal injury claims</strong> &ndash; The largest component of casualties and other claims expense is employee personal injury costs.&nbsp;&nbsp;The independent actuarial firm engaged by NS provides quarterly studies to aid in valuing its employee personal injury liability and estimating its employee personal injury expense.&nbsp;&nbsp;The independent actuarial firm studies NS' historical patterns of reserving for claims and subsequent settlements, taking into account relevant outside influences.&nbsp;&nbsp;The actuary uses the results of these analyses to estimate the ultimate amount of liability, which includes amounts for incurred but unasserted claims.&nbsp;&nbsp;NS adjusts its liability quarterly based upon management's assessment and the results of the study.&nbsp;&nbsp;The estimate of loss liabilities is subject to inherent limitation given the difficulty of predicting future events such as jury decisions, court interpretations, or legislative changes and as such the actual loss may vary from the estimated liability recorded.</font></p><font size="2" class="_mt"><strong>Occupational claims</strong> &ndash; Occupational claims (including asbestosis and other respiratory diseases, as well as conditions allegedly related to repetitive motion) are often not caused by a specific accident or event but rather allegedly result from a claimed exposure over time.&nbsp;&nbsp;Many such claims are being asserted by former or retired employees, some of whom have not been employed in the rail industry for decades.&nbsp;&nbsp;The independent actuarial firm provides an estimate of the occupational claims liability based upon NS' history of claim filings, severity, payments, and other pertinent facts.&nbsp;&nbsp;The liability is dependent upon management's judgments made as to the specific case reserves as well as judgments of the consulting independent actuarial firm in the periodic studies.&nbsp;&nbsp;The independent actuarial firm's estimate of ultimate loss includes a provision for those claims that have been incurred but not reported.&nbsp;&nbsp;This provision is derived by analyzing industry data and projecting NS' experience into the future as far as can be reasonably determined.&nbsp;&nbsp;NS adjusts its liability quarterly based upon management's assessment and the results of the study.&nbsp;&nbsp;However, it is possible that the recorded liability may not be adequate to cover the future payment of claims.&nbsp;&nbsp;Adjustments to the recorded liability are reflected in operating expenses in the periods in which such adjustments become known. </font> <p><font size="2" class="_mt"><strong>Third-party claims</strong> &ndash; NS records a liability for third-party claims including those for highway crossing accidents, trespasser and other injuries, automobile liability, property damage, and lading damage.&nbsp;&nbsp;The independent actuarial firm assists with the calculation of potential liability for third-party claims, except lading damage, based upon NS' experience including number and timing of incidents, amount of payments, settlement rates, number of open claims, and legal defenses.&nbsp;&nbsp;The actuarial estimate includes a provision for claims that have been incurred but have not yet been reported.&nbsp;&nbsp;Each quarter NS adjusts its liability based upon management's assessment and the results of the study.&nbsp;&nbsp;Given the inherent uncertainty in regard to the ultimate outcome of third-party claims, it is possible that the actual loss may differ from the estimated liability recorded.</font></p> <p align="left"><strong> </strong><font size="2" class="_mt"><strong>Environmental Matters</strong> </font></p> <p align="left"><font size="2" class="_mt">NS is subject to various jurisdictions' environmental laws and regulations.&nbsp;&nbsp;It is NS' policy to record a liability where such liability or loss is probable and its amount can be estimated reasonably.&nbsp;&nbsp;Claims, if any, against third parties, for recovery of cleanup costs incurred by NS are reflected as receivables (when collection is probable) in the Consolidated Balance Sheets and are not netted against the associated NS liability.&nbsp;&nbsp;Environmental engineers regularly participate in ongoing evaluations of all known sites and in determining any necessary adjustments to liability estimates.&nbsp;&nbsp;NS also has an Environmental Policy Council, composed of senior managers, to oversee and interpret its environmental policy.</font></p> <p align="left"><font size="2" class="_mt">NS' Consolidated Balance Sheets include liabilities for environmental exposures of $<font class="_mt">32</font> million at March 31, 2011, and $<font class="_mt">33</font> million at December 31, 2010 (of which $<font class="_mt">12</font> million is classified as a current liability at the end of each period).&nbsp;&nbsp;At March 31, 2011, the liability represents NS' estimate of the probable cleanup and remediation costs based on available information at&nbsp;<font class="_mt">142</font> known locations.&nbsp;&nbsp;As of that date,&nbsp;<font class="_mt">nine</font> sites accounted for $<font class="_mt">13</font> million of the liability, and no individual site was considered to be material.&nbsp;&nbsp;NS anticipates that much of this liability will be paid out over&nbsp;<font class="_mt">five</font> years; however, some costs will be paid out over a longer period.</font></p> <p align="left"><font size="2" class="_mt">At&nbsp;<font class="_mt">30</font> locations, one or more Norfolk Southern subsidiaries, usually in conjunction with a number of other parties, have been identified as potentially responsible parties by the Environmental Protection Agency (EPA) or similar state authorities under the Comprehensive Environmental Response, Compensation and Liability Act of 1980, or comparable state statutes, which often impose joint and several liability for cleanup costs. </font></p> <p align="left"><font size="2" class="_mt">With respect to known environmental sites (whether identified by NS or by the EPA or comparable state authorities), estimates of NS' ultimate potential financial exposure for a given site or in the aggregate for all such sites are necessarily imprecise because of the widely varying costs of currently available cleanup techniques, the likely development of new cleanup technologies, the difficulty of determining in advance the nature and full extent of contamination and each potential participant's share of any estimated loss (and that participant's ability to bear it), and evolving statutory and regulatory standards governing liability.</font></p> <p><font size="2" class="_mt">The risk of incurring environmental liability &ndash; for acts and omissions, past, present, and future &ndash; is inherent in the railroad business.&nbsp;&nbsp;Some of the commodities in NS' traffic mix, particularly those classified as hazardous materials, pose special risks that NS and its subsidiaries work diligently to minimize.&nbsp;&nbsp;In addition, several NS subsidiaries own, or have owned, land used as operating property, or which is leased and operated by others, or held for sale.&nbsp;&nbsp;Because environmental problems may exist on these properties that are latent or undisclosed, there can be no assurance that NS will not incur environmental liabilities or costs with respect to one or more of them, the amount and materiality of which cannot be estimated reliably at this time.&nbsp;&nbsp;Moreover, lawsuits and claims involving these and potentially other unidentified environmental sites and matters are likely to arise from time to time.&nbsp;&nbsp;The resulting liabilities could have a significant effect on financial position, results of operations, or liquidity in a particular year or quarter.</font></p> <p align="left"><font size="2" class="_mt">Based on its assessment of the facts and circumstances now known, management believes that it has recorded the probable costs for dealing with those environmental matters of which NS is aware.&nbsp;&nbsp;Further, management believes that it is unlikely that any known matters, either individually or in the aggregate, will have a material adverse effect on NS' financial position, results of operations, or liquidity.</font></p> <p align="left"><strong><font size="2" class="_mt">Insurance</font></strong></p> <p align="left"><font size="2" class="_mt">Norfolk Southern obtains on behalf of itself and its subsidiaries insurance for potential losses for third-party liability and first-party property damages.&nbsp;&nbsp;NS is currently self-insured up to $<font class="_mt">50</font> million and above $<font class="_mt">1</font> billion per occurrence for bodily injury and property damage to third parties and up to $<font class="_mt">25</font> million and above $<font class="_mt">175</font> million per occurrence for property owned by NS or in NS' care, custody, or control.</font></p> <p align="left"><strong><font size="2" class="_mt">Purchase Commitments</font></strong></p> <p align="left"><font size="2" class="_mt">At March 31, 2011, NS had outstanding purchase commitments totaling approximately $<font class="_mt">1.2</font> billion for long-term service contracts through 2019 as well as locomotives, track material, RoadRailer&#174; trailers, and freight cars, in connection with its capital programs through 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size="2" class="_mt">&nbsp;</font></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td><font size="2" class="_mt">&nbsp;</font></td></tr> <tr><td><font size="2" class="_mt">&nbsp;</font></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td colspan="4"> <div align="center"><strong><font size="2" class="_mt">Three Months Ended</font></strong></div></td></tr> <tr><td><font size="2" class="_mt">&nbsp;</font></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td colspan="4"> <div align="center"><strong><font size="2" class="_mt">March 31,</font></strong></div></td></tr> <tr><td width="390"><font size="2" class="_mt">&nbsp;</font></td> <td width="20"><font size="2" class="_mt">&nbsp;</font></td> <td width="61"> <div align="center"><u><strong><font size="2" class="_mt">2011</font></strong></u></div></td> <td width="20"><font size="2" class="_mt">&nbsp;</font></td> <td width="20"><font size="2" class="_mt">&nbsp;</font></td> <td width="61"> <div align="center"><u><strong><font size="2" class="_mt">2010</font></strong></u></div></td></tr> <tr><td><font size="2" class="_mt">&nbsp;</font></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td colspan="4"> <div align="center"><em><font size="2" class="_mt">($ in millions)</font></em></div></td></tr> <tr><td><font size="2" class="_mt">&nbsp;</font></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td><font size="2" class="_mt">&nbsp;</font></td></tr> <tr><td><font size="2" class="_mt">Net income</font></td> <td> <div align="right"><font size="2" class="_mt">$</font></div></td> <td><font size="2" class="_mt"> </font> <div align="right"><font size="2" class="_mt">325</font></div><font size="2" class="_mt"> </font></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td> <div align="right"><font size="2" class="_mt">$</font></div></td> <td><font size="2" class="_mt"> </font> <div align="right"><font size="2" class="_mt">257</font></div><font size="2" class="_mt"> </font></td></tr> <tr><td><font size="2" class="_mt">Other comprehensive income</font></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td><font size="2" class="_mt"> </font> <div style="border-bottom: thin solid;" align="right"><font size="2" class="_mt">19</font></div><font size="2" class="_mt"> </font></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td><font size="2" class="_mt"> </font> <div style="border-bottom: thin solid;" align="right"><font size="2" class="_mt">19</font></div><font size="2" class="_mt"> </font></td></tr> <tr><td><font size="2" class="_mt">&nbsp;</font></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td><font size="2" class="_mt">&nbsp;</font></td></tr> <tr><td><font size="2" class="_mt">&nbsp;&nbsp;&nbsp;&nbsp;Total comprehensive income</font></td> <td> <div align="right"><font size="2" class="_mt">$</font></div></td> <td><font size="2" class="_mt"> </font> <div style="border-bottom: double;" align="right"><font size="2" class="_mt">344</font></div><font size="2" class="_mt"> </font></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td> <div align="right"><font size="2" class="_mt">$</font></div></td> <td><font size="2" class="_mt"> </font> <div style="border-bottom: double;" align="right"><font size="2" class="_mt">276</font></div><font size="2" class="_mt"> </font></td></tr></table> </div>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; Three Months Ended &nbsp; &nbsp; MarchfalsefalsefalsefalsefalseOtherus-types:textBlockItemTypestringThis element is used to disclose total comprehensive income.No authoritative reference 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$Duration_1_1_2011_To_3_31_2011http://www.sec.gov/CIK0000702165duration2011-01-01T00:00:002011-03-31T00:00:00Unit12Standardhttp://www.xbrl.org/2003/iso4217USDiso42170Unit14Dividehttp://www.xbrl.org/2003/iso4217USDiso4217http://www.xbrl.org/2003/instancesharesxbrli0Unit1Standardhttp://www.xbrl.org/2003/instancesharesxbrli0Unit13Standardhttp://www.xbrl.org/2003/instancepurexbrli0USDUSD$2true0us-gaap_EquityAbstractus-gaaptruenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00falsefalsefalsefalsefalseOtherxbrli:stringItemTypestringNo definition available.falsefalse3false0us-gaap_ScheduleOfTreasuryStockByClassTextBlockus-gaaptruenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalseterselabel1falsefalsefalse00<div> <p align="left"><strong><font size="2" class="_mt">4.&nbsp;&nbsp;Stockholders Equity</font></strong></p> <p align="left"><font size="2" class="_mt">Common stock is reported net of shares held by consolidated subsidiaries of Norfolk Southern, which at March 31, 2011 and December 31, 2010, amounted to&nbsp;<font class="_mt">20,320,777</font> and&nbsp;<font class="_mt">20,336,843</font> shares, respectively, with a cost of $<font class="_mt">19</font> million as of the end of both periods.</font></p> </div>4.&nbsp;&nbsp;Stockholders Equity Common stock is reported net of shares held by consolidated subsidiaries of Norfolk Southern, which at March 31, 2011 andfalsefalsefalsefalsefalseOtherus-types:textBlockItemTypestringThis element may be used to capture the complete disclosure pertaining to an entity's treasury stock, including the average cost per share, carrying basis for each class of treasury stock, description of share repurchase program authorized by an entity's Board of Directors, the treatment of the purchase price in excess of the current market value, number of shares held for each class of treasury stock, and other information necessary to a fair presentation.No authoritative reference available.falsefalse12Stockholders' Equity (Unaudited)UnKnownUnKnownUnKnownUnKnownfalsetrue XML 34 R6.xml IDEA: Stock-Based Compensation (Unaudited) 2.2.0.25falsefalse10101 - Disclosure - Stock-Based Compensation (Unaudited)truefalsefalse1falsefalseUSDfalsefalse1/1/2011 - 3/31/2011 USD ($) USD ($) / shares $Duration_1_1_2011_To_3_31_2011http://www.sec.gov/CIK0000702165duration2011-01-01T00:00:002011-03-31T00:00:00Unit12Standardhttp://www.xbrl.org/2003/iso4217USDiso42170Unit14Dividehttp://www.xbrl.org/2003/iso4217USDiso4217http://www.xbrl.org/2003/instancesharesxbrli0Unit1Standardhttp://www.xbrl.org/2003/instancesharesxbrli0Unit13Standardhttp://www.xbrl.org/2003/instancepurexbrli0USDUSD$2true0us-gaap_ShareBasedCompensationAbstractus-gaaptruenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00falsefalsefalsefalsefalseOtherxbrli:stringItemTypestringNo definition available.falsefalse3false0us-gaap_DisclosureOfCompensationRelatedCostsShareBasedPaymentsTextBlockus-gaaptruenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalseterselabel1falsefalsefalse00<div> <p align="left"><font size="2" class="_mt"><strong>1.&nbsp;&nbsp;Stock-Based Compensation</strong> </font></p> <p align="left"><font size="2" class="_mt">In the first quarter of 2011, a committee of non-employee directors of Norfolk Southern's Board of Directors granted stock options, restricted stock units and performance share units (PSUs) pursuant to the Long-Term Incentive Plan (LTIP) and granted stock options pursuant to the Thoroughbred Stock Option Plan (TSOP) as discussed below.&nbsp;&nbsp;Stock-based compensation expense was $<font class="_mt">42</font> million during the first quarter of 2011 and $<font class="_mt">40</font> million during the same period of 2010.&nbsp;&nbsp;The total tax effects recognized in income in relation to stock-based compensation were net benefits of $<font class="_mt">14</font> million and $<font class="_mt">13</font> million for the quarters ended March 31, 2011 and 2010, respectively.</font></p> <p align="left"><strong><font size="2" class="_mt">Stock Options</font></strong></p> <p><font size="2" class="_mt">In the first quarter of 2011,&nbsp;<font class="_mt">627,700</font> options were granted under the LTIP and&nbsp;<font class="_mt">257,000</font> options were granted under the TSOP.&nbsp;&nbsp;In each case, the grant price was $<font class="_mt">62.75</font>, which was the greater of the average fair market value of Norfolk Southern common stock (Common Stock) or the closing price of the Common Stock on the effective date of the grant, and the options have a term of&nbsp;<font class="_mt">ten</font> years.&nbsp;&nbsp;The options granted under the LTIP and TSOP in 2011 may not be exercised prior to the&nbsp;<font class="_mt">fourth</font> and&nbsp;<font class="_mt">third</font> anniversaries of the date of grant, respectively.&nbsp;&nbsp;Holders of the 2011 options granted under the LTIP who remain actively employed receive cash dividend equivalent payments for&nbsp;<font class="_mt">four</font> years in an amount equal to the regular quarterly dividends paid on Common Stock.&nbsp;&nbsp;Dividend equivalent payments are not made on TSOP options.</font></p> <p align="left"><font size="2" class="_mt">The fair value of each option award in 2011 was measured on the date of grant using a lattice-based option valuation model.&nbsp;&nbsp;Expected volatilities are based on implied volatilities from traded options on Common Stock and historical volatility of Common Stock.&nbsp;&nbsp;NS uses historical data to estimate option exercises and employee terminations within the valuation model.&nbsp;&nbsp;The average expected option life is derived from the output of the valuation model and represents the period of time that options granted are expected to be outstanding.&nbsp;&nbsp;The average risk-free interest rate is based on the U.S. Treasury yield curve in effect at the time of grant.&nbsp;&nbsp;A dividend yield of&nbsp;<font class="_mt">zero</font> was used for LTIP options during the four-year period in which dividend equivalent payments are made.&nbsp;&nbsp;A dividend yield of <font class="_mt">2.55</font>% was used for LTIP options for periods where no dividend equivalent payments are made as well as for TSOP options which do not receive dividend equivalents.&nbsp;&nbsp;The assumptions for the 2011 LTIP and TSOP grants are shown in the following table:</font></p><font size="2" class="_mt"> </font> <table style="font-size: 20px;"> <tr><td width="530"><font size="2" class="_mt">Expected volatility range</font></td> <td width="105"> <div align="right"><font size="2" class="_mt"><font class="_mt">28</font>% - <font class="_mt">32</font>%</font></div></td></tr> <tr><td><font size="2" class="_mt">Average expected volatility</font></td> <td> <div align="right"><font size="2" class="_mt">28%</font></div></td></tr> <tr><td><font size="2" class="_mt">Average expected option life</font></td> <td> <div align="right"><font size="2" class="_mt">8.5 years</font></div></td></tr> <tr><td><font size="2" class="_mt">Average risk-free interest rate</font></td> <td> <div align="right"><font size="2" class="_mt">3.42%</font></div></td></tr> <tr><td><font size="2" class="_mt">LTIP per-share grant-date fair value</font></td> <td> <div align="right"><font size="2" class="_mt">$22.26</font></div></td></tr> <tr><td><font size="2" class="_mt">TSOP per-share grant-date fair value</font></td> <td> <div align="right"><font size="2" class="_mt">$18.10</font></div></td></tr></table><font size="2" class="_mt"> </font> <p align="left"><font size="2" class="_mt">For the first three months of 2011, options relating to&nbsp;<font class="_mt">759,193</font> shares were exercised, yielding $<font class="_mt">20</font> million of cash proceeds and $<font class="_mt">10</font> million of tax benefit recognized as additional paid-in capital.&nbsp;&nbsp;For the first three months of 2010, options relating to&nbsp;<font class="_mt">592,110</font> shares were exercised yielding $<font class="_mt">12</font> million of cash proceeds and $<font class="_mt">7</font> million of tax benefit recognized as additional paid-in capital.</font></p> <p align="left"><strong><font size="2" class="_mt">Restricted Stock Units and Restricted Shares</font></strong></p> <p align="left"><font size="2" class="_mt">There were&nbsp;<font class="_mt">177,400</font> restricted stock units granted in 2011, with an average grant-date fair value of $<font class="_mt">62.75</font> and a <font class="_mt">five</font>-year restriction period.&nbsp;&nbsp;The restricted stock units granted in 2011 will be settled through the issuance of shares of Common Stock.</font></p> <p align="left"><font size="2" class="_mt">During the first quarter of 2011, no restricted stock units were earned and paid out.&nbsp;&nbsp;The total related tax benefit recognized as additional paid-in capital was less than $<font class="_mt">1</font> million in the first quarter of 2011.</font></p> <p align="left"><font size="2" class="_mt">During the first quarter of 2010,&nbsp;<font class="_mt">286,709</font> restricted stock units were earned and paid out in cash with a weighted average fair value of $<font class="_mt">48.88</font>.&nbsp;&nbsp;Also earned and distributed were&nbsp;<font class="_mt">433,236</font> restricted shares with a weighted-average grant-date fair value of $<font class="_mt">34.10</font>.&nbsp;&nbsp;The total related tax benefit recognized as additional paid-in capital was $<font class="_mt">2</font> million in the first quarter of 2010.</font></p> <p align="left"><strong><font size="2" class="_mt">Performance Share Units</font></strong></p> <p align="left"><font size="2" class="_mt">PSUs provide for awards based on achievement of certain predetermined corporate performance goals at the end of a three-year cycle.&nbsp;&nbsp;During the first quarter of 2011, there were&nbsp;<font class="_mt">580,900</font> PSUs granted with a grant-date fair value of $<font class="_mt">62.75</font>.&nbsp;&nbsp;The PSUs granted in 2011 and 2010 will be paid in the form of shares of Common Stock.</font></p> <p align="left"><font size="2" class="_mt">During the first quarter of 2011,&nbsp;<font class="_mt">850,595</font> PSUs were earned and paid out, one-half in shares of Common Stock and one-half in cash.&nbsp;&nbsp;These PSUs had a grant-date fair value of $<font class="_mt">50.47</font> per unit and a fair value at payout of $<font class="_mt">62.75</font> per unit.&nbsp;&nbsp;The total related tax benefit recognized as additional paid-in capital was $<font class="_mt">2</font> million for the first quarter of 2011.</font></p> <p align="left"><font size="2" class="_mt">During the first quarter of 2010,&nbsp;<font class="_mt">851,893</font> PSUs were 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It also includes other kinds of accounts that have the general characteristics of demand deposits in that the Entity may deposit additional funds at any time and also effectively may withdraw funds at any time without prior notice or penalty. Cash equivalents, excluding items classified as marketable securities, include short-term, highly liquid investments that are both readily convertible to known amounts of cash, and so near their maturity that they present minimal risk of changes in value because of changes in interest rates. Generally, only investments with original maturities of three months or less qualify under that definition. Original maturity means original maturity to the entity holding the investment. For example, both a three-month US Treasury bill and a three-year Treasury note purchased three months from maturity qualify as cash equivalents. However, a Treasury note purchased three years ago does not become a cash equivalent when its remaining maturity is three months. 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Disclosure - Income Taxes (Unaudited) (Details)truefalseIn Millionsfalse1falsefalseUSDfalsefalse1/1/2011 - 3/31/2011 USD ($) USD ($) / shares $Duration_1_1_2011_To_3_31_2011http://www.sec.gov/CIK0000702165duration2011-01-01T00:00:002011-03-31T00:00:00Unit12Standardhttp://www.xbrl.org/2003/iso4217USDiso42170Unit14Dividehttp://www.xbrl.org/2003/iso4217USDiso4217http://www.xbrl.org/2003/instancesharesxbrli0Unit1Standardhttp://www.xbrl.org/2003/instancesharesxbrli0Unit13Standardhttp://www.xbrl.org/2003/instancepurexbrli0USDUSD$2falsefalseUSDfalsefalse1/1/2010 - 3/31/2010 USD ($) USD ($) / shares $Duration_1_1_2010_To_3_31_2010http://www.sec.gov/CIK0000702165duration2010-01-01T00:00:002010-03-31T00:00:00Unit12Standardhttp://www.xbrl.org/2003/iso4217USDiso42170Unit1Standardhttp://www.xbrl.org/2003/instancesharesxbrli0Unit14Dividehttp://www.xbrl.org/2003/iso4217USDiso4217http://www.xbrl.org/2003/instancesharesxbrli0USDUSD$2true0nsc_IncomeTaxDisclosureAbstractnscfalsenadurationIncome Tax Disclosure [Abstract]falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00falsefalsefalsefalsefalse2falsefalsefalse00falsefalsefalsefalsefalseOtherxbrli:stringItemTypestringIncome Tax Disclosure [Abstract]falsefalse3false0nsc_MedicarePartDnscfalsedebitdurationThis element is used to disclose the deferred tax expense charge as a result of the Patient Protection and Affordable Care...falsefalsefalsefalsefalsefalsefalsefalsefalsefalselabel1falsefalsefalse00falsefalsefalsefalsefalse2truefalsefalse2700000027falsetruefalsefalsefalseMonetaryxbrli:monetaryItemTypemonetaryThis element is used to disclose the deferred tax expense charge as a result of the Patient Protection and Affordable Care Act and the Health Care and Education Reconciliation Act of 2010.No authoritative reference available.falsefalse4false0us-gaap_UnrecognizedTaxBenefitsPeriodIncreaseDecreaseus-gaaptruenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalseterselabel1truefalsefalse-38000000-38falsefalsefalsefalsefalse2falsefalsefalse00falsefalsefalsefalsefalseMonetaryxbrli:monetaryItemTypemonetaryThe net amount of all increases and decreases in unrecognized tax benefits for the period.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name FASB Interpretation (FIN) -Number 48 -Paragraph 21 -Subparagraph a falsefalse5false0nsc_TaxExaminationReductionOfUnrecognizedTaxBenefitsnscfalsecreditinstantThis element is used to disclose the amount unrecognized tax benefits and income tax expense could be reduced upon favorable...falsefalsefalsefalsefalsefalsefalsefalsefalsefalseterselabel1truefalsefalse4000000040falsetruefalsefalsefalse2falsefalsefalse00falsefalsefalsefalsefalseMonetaryxbrli:monetaryItemTypemonetaryThis element is used to disclose the amount unrecognized tax benefits and income tax expense could be reduced upon favorable resolution of the Internal Revenue Service examination of the company's income tax returns.No authoritative reference available.falsefalse24Income Taxes (Unaudited) (Details) (USD $)MillionsUnKnownUnKnownUnKnownfalsetrue XML 37 defnref.xml IDEA: XBRL DOCUMENT This element is used to disclose a representative sample of the total number of environmental locations. No authoritative reference available. This element is used to disclose the "purchased services and rents" and "fuel" expenses for the use of the Shared Assets Area. No authoritative reference available. No authoritative reference available. No authoritative reference available. No authoritative reference available. No authoritative reference available. No authoritative reference available. No authoritative reference available. No authoritative reference available. No authoritative reference available. No authoritative reference available. No authoritative reference available. No authoritative reference available. No authoritative reference available. No authoritative reference available. No authoritative reference available. No authoritative reference available. No authoritative reference available. This element is used to disclose the number of locations the company or its subsidiaries in conjunction with other parties have been identified as potentially responsible parties by the Environmental Protection Agency (EPA). No authoritative reference available. No authoritative reference available. No authoritative reference available. No authoritative reference available. No authoritative reference available. This element is used to disclose the deferred tax expense charge as a result of the Patient Protection and Affordable Care Act and the Health Care and Education Reconciliation Act of 2010. No authoritative reference available. No authoritative reference available. No authoritative reference available. No authoritative reference available. No authoritative reference available. No authoritative reference available. No authoritative reference available. No authoritative reference available. No authoritative reference available. No authoritative reference available. No authoritative reference available. No authoritative reference available. No authoritative reference available. No authoritative reference available. No authoritative reference available. This element is used to disclose the grant price of incentive award grants. No authoritative reference available. No authoritative reference available. No authoritative reference available. No authoritative reference available. No authoritative reference available. No authoritative reference available. No authoritative reference available. No authoritative reference available. No authoritative reference available. This element is used to disclose the amount up to which Norfolk Southern is self-insured per occurrence for property owned or in the care, custody or control of Norfolk Southern. No authoritative reference available. No authoritative reference available. No authoritative reference available. This element is used to disclose the amount recorded in accounts payable due to Conrail for the operation of the Shared Assets Area. No authoritative reference available. No authoritative reference available. No authoritative reference available. No authoritative reference available. No authoritative reference available. No authoritative reference available. No authoritative reference available. No authoritative reference available. No authoritative reference available. No authoritative reference available. No authoritative reference available. This element is used to disclose the fair value at pay out of incentive awards paid out during the reporting period. No authoritative reference available. No authoritative reference available. No authoritative reference available. This element is used to disclose the number of restricted stock units paid out in cash during the period related to Restricted Stock Unit awards, net of any forfeits. No authoritative reference available. No authoritative reference available. No authoritative reference available. No authoritative reference available. No authoritative reference available. No authoritative reference available. No authoritative reference available. No authoritative reference available. No authoritative reference available. No authoritative reference available. No authoritative reference available. No authoritative reference available. No authoritative reference available. Financial Instruments Owned At Fair Value No authoritative reference available. No authoritative reference available. No authoritative reference available. No authoritative reference available. No authoritative reference available. The average maturity date in months of held-to-maturity corporate bonds. No authoritative reference available. No authoritative reference available. No authoritative reference available. This element is used to disclose the grant price of the LTIP and TSOP stock option grants. No authoritative reference available. No authoritative reference available. No authoritative reference available. This element is used to disclose the reduction in the entity's income taxes that arise when compensation cost (from incentive awards) recognized on the entity's tax return exceeds compensation cost from incentive awards recognized in the income statement related to Restricted Stock Units and Restricted Shares. No authoritative reference available. No authoritative reference available. No authoritative reference available. No authoritative reference available. No authoritative reference available. No authoritative reference available. No authoritative reference available. The average maturity date in months of available-for-sale commercial paper. No authoritative reference available. This item represents the carrying amount on the entity's balance sheet of its investment in common stock of an equity method investee. This is not an indicator of the fair value of the investment, rather it is the initial cost adjusted for the entity's share of earnings and losses of the investee, adjusted for any distributions (dividends) and other than temporary impairment losses recognized. No authoritative reference available. This element is used to disclose the number of PSUs paid out in one-half Common Stock and one-half cash during the reporting period related to Performance Share Unit awards, net of any forfeits and unearned awards. No authoritative reference available. This element is used to disclose the settlement amount of an arbitration claim. No authoritative reference available. No authoritative reference available. No authoritative reference available. No authoritative reference available. No authoritative reference available. No authoritative reference available. No authoritative reference available. Tabular disclosure of an entity's basic and diluted earnings per share calculations. No authoritative reference available. An entity using a valuation technique with different volatilities during the contractual term must disclose the weighted-average expected volatility No authoritative reference available. No authoritative reference available. No authoritative reference available. No authoritative reference available. No authoritative reference available. No authoritative reference available. No authoritative reference available. No authoritative reference available. No authoritative reference available. No authoritative reference available. No authoritative reference available. No authoritative reference available. No authoritative reference available. No authoritative reference available. No authoritative reference available. Aggregate carrying amount, as of the balance sheet date, of unapplied materials and supplies to be used in the performance or support of carrier operations. No authoritative reference available. No authoritative reference available. No authoritative reference available. No authoritative reference available. No authoritative reference available. No authoritative reference available. No authoritative reference available. No authoritative reference available. No authoritative reference available. No authoritative reference available. No authoritative reference available. No authoritative reference available. No authoritative reference available. No authoritative reference available. No authoritative reference available. This element is used to disclose the number of options having exercise prices exceeding the average market price of Common Stock. No authoritative reference available. This element is used to disclose the amount unrecognized tax benefits and income tax expense could be reduced upon favorable resolution of the Internal Revenue Service examination of the company's income tax returns. No authoritative reference available. No authoritative reference available. No authoritative reference available. Percentage of PSUs grants earned and paid in cash No authoritative reference available. No authoritative reference available. No authoritative reference available. No authoritative reference available. No authoritative reference available. This element is used to disclose the amount of other receivables associated with the arbitration claim for which recovery is no longer probable. No authoritative reference available. This represents the entire disclosure related to investment No authoritative reference available. No authoritative reference available. No authoritative reference available. Stock repurchased and retired since inception of stock repurchase program, shares. No authoritative reference available. Stock repurchased and retired since inception, value. No authoritative reference available. The amount of expense for contract services provided to the Company and rent paid for freight cars owned by other railroads or private companies net of rents received, including lease expenses, primarily for locomotives, railcars, containers, and trailers. No authoritative reference available. No authoritative reference available. No authoritative reference available. No authoritative reference available. No authoritative reference available. No authoritative reference available. No authoritative reference available. This element is used to disclose the contested portion of arbitration with one of the company's insurance carriers. No authoritative reference available. No authoritative reference available. No authoritative reference available. Reductions in the entity's income taxes that arise when compensation cost (from incentive awards) recognized on the entity's tax return exceeds compensation cost from incentive awards recognized on the income statement. No authoritative reference available. The average maturity date in months of available-for-sale certificates of deposit. No authoritative reference available. This element is used to disclose the average interest rate associated with long-term advances from an affiliate. No authoritative reference available. No authoritative reference available. No authoritative reference available. This element is used to disclose the period of time over which an employee's restricted stock unit award is earned. No authoritative reference available. No authoritative reference available. No authoritative reference available. No authoritative reference available. No authoritative reference available. The grant-date fair value of options granted during the reporting period as calculated by applying the disclosed option pricing methodology. No authoritative reference available. Held To Maturity Federal Government Bond Maturity Date No authoritative reference available. An entity using a valuation technique with different volatilities during the contractual term must disclose the minimum range of expected volatilities used. No authoritative reference available. This element is used to disclose the liability associated with the representative sample of environmental locations. No authoritative reference available. No authoritative reference available. No authoritative reference available. No authoritative reference available. No authoritative reference available. No authoritative reference available. No authoritative reference available. No authoritative reference available. No authoritative reference available. This element is used to disclose the number of known locations of environmental loss contingencies. No authoritative reference available. This element is used to disclose the amount up to which the company is self-insured per occurrence for bodily injury and property damage to third parties. No authoritative reference available. No authoritative reference available. No authoritative reference available. No authoritative reference available. No authoritative reference available. No authoritative reference available. No authoritative reference available. No authoritative reference available. No authoritative reference available. This element is used to disclose the amount above which the company is self-insured per occurrence for bodily injury and property damage to third parties. No authoritative reference available. No authoritative reference available. No authoritative reference available. No authoritative reference available. No authoritative reference available. No authoritative reference available. No authoritative reference available. Materials and other operating expenses not separately disclosed. This element is used when other, more specific, elements are not appropriate. No authoritative reference available. This element is used to disclose the repurchase of common stock through the company's repurchase program. No authoritative reference available. No authoritative reference available. No authoritative reference available. Long Term Advances Due To Subsidiary, Maturity Date No authoritative reference available. No authoritative reference available. No authoritative reference available. No authoritative reference available. No authoritative reference available. The net cash inflow (outflow) from other operating activities. This element is used when there is not a more specific and appropriate element in the taxonomy. No authoritative reference available. This item represents the entity's proportionate share for the period of the net income (loss) of its investee (Conrail) to which the equity method of accounting is applied. Such amount typically reflects adjustments similar to those made in preparing consolidated statements, including adjustments to eliminate intercompany gains and losses, and to amortize, if appropriate, any difference between cost and underlying equity in net assets of the investee at the date of investment. No authoritative reference available. No authoritative reference available. No authoritative reference available. Sum of operating profit (loss) and non-operating income (expense) before income taxes. No authoritative reference available. No authoritative reference available. No authoritative reference available. No authoritative reference available. No authoritative reference available. No authoritative reference available. No authoritative reference available. Share-based compensation cost during the period with respect to the award, which will be recognized in income or capitalized as part of the cost of an asset. No authoritative reference available. No authoritative reference available. No authoritative reference available. No authoritative reference available. No authoritative reference available. No authoritative reference available. No authoritative reference available. No authoritative reference available. No authoritative reference available. No authoritative reference available. No authoritative reference available. No authoritative reference available. No authoritative reference available. Share-based compensation cost - tax effect during the period with respect to the award, which will be recognized in income or capitalized as part of the cost of an asset. No authoritative reference available. This element is used to disclose the number of years holders of LTIP options who remain actively employed, are eligible for dividend equivalent payments on a particular stock option grant. No authoritative reference available. No authoritative reference available. No authoritative reference available. No authoritative reference available. No authoritative reference available. No authoritative reference available. No authoritative reference available. No authoritative reference available. No authoritative reference available. This element is used to disclose the amount above which Norfolk Southern is self-insured per occurrence for property owned or in the care, custody or control of Norfolk Southern. No authoritative reference available. No authoritative reference available. No authoritative reference available. No authoritative reference available. No authoritative reference available. Share Based Compensation Arrangement By Share Based Payment Award Fair Value Assumptions Expected Dividend Rate When Dividend Equivalents Are Paid No authoritative reference available. The weighted average grant date fair value of incentive awards paid out during the reporting period. No authoritative reference available. No authoritative reference available. No authoritative reference available. No authoritative reference available. No authoritative reference available. No authoritative reference available. No authoritative reference available. The cash inflow associated with the amount received from holders exercising their stock option excluding the tax effect. No authoritative reference available. An entity using a valuation technique with different volatilities during the contractual term must disclose the maximum range of expected volatilities used. No authoritative reference available. No authoritative reference available. No authoritative reference available. No authoritative reference available. No authoritative reference available. This element is used to disclose the amount of receivables associated with the contested portion of arbitration. No authoritative reference available. No authoritative reference available. No authoritative reference available. Environmental Locations Representative Sample Liability Period No authoritative reference available. Disclosures about an individual defined benefit pension plan or an other postretirement defined benefit plan. It may be appropriate to group certain similar plans. No authoritative reference available. This element is used to disclose total comprehensive income. No authoritative reference available. No authoritative reference available. No authoritative reference available. This element is used to disclose Total Comprehensive Income (Loss), Net of Tax, for the period including Net Income. No authoritative reference available. For each plan, identification of the award pricing model or other valuation method used in calculating the weighted average fair values disclosed. The model is also used to calculate the compensation expense that is shown within the balance sheet, income statement, and cash flow. Examples of valuation techniques are lattice models (binomial model), closed-form models (Black-Scholes-Merton formula), and a Monte Carlo simulation technique. Fair value is the amount at which an asset (or liability) could be bought (or incurred) or sold (or settled) in a current transaction between willing parties, that is, other than in a forced or liquidation sale. May include disclosures about the assumptions underlying application of the method selected. No authoritative reference available. No authoritative reference available. No authoritative reference available. The estimated dividend rate (a percentage of the share price) to be paid (expected dividends) to holders of the underlying shares over the option's term where no dividend equivalent payments are made. No authoritative reference available. No authoritative reference available. No authoritative reference available. No authoritative reference available. No authoritative reference available. No authoritative reference available. No authoritative reference available. No authoritative reference available. No authoritative reference available. No authoritative reference available. No authoritative reference available. No authoritative reference available. No authoritative reference available. No authoritative reference available. No authoritative reference available. No authoritative reference available. No authoritative reference available. No authoritative reference available. No authoritative reference available. No authoritative reference available. No authoritative reference available. No authoritative reference available. No authoritative reference available. No authoritative reference available. No authoritative reference available. No authoritative reference available. No authoritative reference available. The grant-date fair value of incentive awards paid out during the reporting period. No authoritative reference available. The average maturity date in months of available-for-sale corporate bonds. No authoritative reference available. No authoritative reference available. No authoritative reference available. No authoritative reference available. No authoritative reference available. No authoritative reference available. No authoritative reference available. The net change during the reporting period in the aggregate value of all materials and supplies held by the reporting entity, associated with underlying transactions that are classified as operating activities. No authoritative reference available. Percentage of PSUs grants earned and paid in common shares No authoritative reference available. No authoritative reference available. No authoritative reference available. No authoritative reference available. No authoritative reference available. No authoritative reference available. No authoritative reference available. XML 38 R21.xml IDEA: Fair Value (Unaudited) (Tables) 2.2.0.25falsefalse30903 - Disclosure - Fair Value (Unaudited) (Tables)truefalsefalse1falsefalseUSDfalsefalse1/1/2011 - 3/31/2011 USD ($) USD ($) / shares $Duration_1_1_2011_To_3_31_2011http://www.sec.gov/CIK0000702165duration2011-01-01T00:00:002011-03-31T00:00:00Unit12Standardhttp://www.xbrl.org/2003/iso4217USDiso42170Unit14Dividehttp://www.xbrl.org/2003/iso4217USDiso4217http://www.xbrl.org/2003/instancesharesxbrli0Unit1Standardhttp://www.xbrl.org/2003/instancesharesxbrli0Unit13Standardhttp://www.xbrl.org/2003/instancepurexbrli0USDUSD$2true0nsc_FairValueDisclosuresAbstractnscfalsenadurationFair Value Disclosures [Abstract]falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00falsefalsefalsefalsefalseOtherxbrli:stringItemTypestringFair Value Disclosures [Abstract]falsefalse3false0nsc_FinancialInstrumentsOwnedAtFairValueTextBlocknscfalsenadurationFinancial Instruments Owned At Fair Valuefalsefalsefalsefalsefalsefalsefalsefalsefalsefalseterselabel1falsefalsefalse00<div> <table style="font-size: 20px;" width="882"> <tr><td><font size="2" class="_mt">&nbsp;</font></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td><font size="2" class="_mt">&nbsp;</font></td></tr> <tr><td><font size="2" class="_mt">&nbsp;</font></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td colspan="4"> <div align="center"><strong><font size="2" class="_mt">March 31, 2011</font></strong></div></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td colspan="4"> <div align="center"><strong><font size="2" class="_mt">December 31, 2010</font></strong></div></td></tr> <tr><td width="370"><font size="2" class="_mt">&nbsp;</font></td> <td width="20"><font size="2" class="_mt">&nbsp;</font></td> <td colspan="2"> <div align="center"><strong><font size="2" class="_mt">Carrying</font></strong></div></td> <td colspan="2"> <div align="center"><strong><font size="2" class="_mt">Fair</font></strong></div></td> <td width="20"><font size="2" class="_mt">&nbsp;</font></td> <td width="20"><font size="2" class="_mt">&nbsp;</font></td> <td colspan="2"> <div align="center"><strong><font size="2" class="_mt">Carrying</font></strong></div></td> <td colspan="2"> <div align="center"><strong><font size="2" class="_mt">Fair</font></strong></div></td></tr> <tr><td><font size="2" class="_mt">&nbsp;</font></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td colspan="2"> <div align="center"><u><strong><font size="2" class="_mt">Amount</font></strong></u></div></td> <td colspan="2"> <div align="center"><u><strong><font size="2" class="_mt">Value</font></strong></u></div></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td colspan="2"> <div align="center"><u><strong><font size="2" class="_mt">Amount</font></strong></u></div></td> <td colspan="2"> <div align="center"><u><strong><font size="2" class="_mt">Value</font></strong></u></div></td></tr> <tr><td><font size="2" class="_mt">&nbsp;</font></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td width="60"><font size="2" class="_mt">&nbsp;</font></td> <td width="20"><font size="2" class="_mt">&nbsp;</font></td> <td width="20"><font size="2" class="_mt">&nbsp;</font></td> <td colspan="4"> <div align="center"><em><font size="2" class="_mt">($ in millions)</font></em></div></td> <td width="20"><font size="2" class="_mt">&nbsp;</font></td> <td width="20"><font size="2" class="_mt">&nbsp;</font></td> <td width="60"><font size="2" class="_mt">&nbsp;</font></td></tr> <tr><td><font size="2" class="_mt">&nbsp;</font></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td width="60"><font size="2" class="_mt">&nbsp;</font></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td width="60"><font size="2" class="_mt">&nbsp;</font></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td><font size="2" class="_mt">&nbsp;</font></td></tr> <tr><td><font size="2" class="_mt">Long-term investments</font></td> <td> <div align="right"><font size="2" class="_mt">$</font></div></td> <td><font size="2" class="_mt"> </font> <div align="right"><font size="2" class="_mt">170&nbsp;</font></div><font size="2" class="_mt"> </font></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td> <div align="right"><font size="2" class="_mt">$</font></div></td> <td><font size="2" class="_mt"> </font> <div align="right"><font size="2" class="_mt">197&nbsp;</font></div><font size="2" class="_mt"> </font></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td> <div align="right"><font size="2" class="_mt">$</font></div></td> <td><font size="2" class="_mt"> </font> <div align="right"><font size="2" class="_mt">192&nbsp;</font></div><font size="2" class="_mt"> </font></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td> <div align="right"><font size="2" class="_mt">$</font></div></td> <td><font size="2" class="_mt"> </font> <div align="right"><font size="2" class="_mt">222&nbsp;</font></div><font size="2" class="_mt"> </font></td></tr> <tr><td><font size="2" class="_mt">Long-term debt, including current maturities</font></td> <td> <div align="right"><font size="2" class="_mt">$</font></div></td> <td><font size="2" class="_mt"> </font> <div align="right"><font size="2" class="_mt">(6,617)</font></div><font size="2" class="_mt"> </font></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td> <div align="right"><font size="2" class="_mt">$</font></div></td> <td><font size="2" class="_mt"> </font> <div align="right"><font size="2" class="_mt">(7,768)</font></div><font size="2" class="_mt"> </font></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td> <div align="right"><font size="2" class="_mt">$</font></div></td> <td><font size="2" class="_mt"> </font> <div align="right"><font size="2" class="_mt">(6,925)</font></div><font size="2" class="_mt"> </font></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td> <div align="right"><font size="2" class="_mt">$</font></div></td> <td><font size="2" class="_mt"> </font> <div align="right"><font size="2" class="_mt">(7,971)</font></div><font size="2" class="_mt"> </font></td></tr></table> </div>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; March 31, 2011 &nbsp; &nbsp; December 31,falsefalsefalsefalsefalseOtherus-types:textBlockItemTypestringFinancial Instruments Owned At Fair ValueNo authoritative reference available.falsefalse12Fair Value (Unaudited) (Tables)UnKnownUnKnownUnKnownUnKnownfalsetrue XML 39 R13.xml IDEA: Comprehensive Income (Unaudited) 2.2.0.25falsefalse10801 - Disclosure - Comprehensive Income (Unaudited)truefalsefalse1falsefalseUSDfalsefalse1/1/2011 - 3/31/2011 USD ($) USD ($) / shares 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<tr><td><font size="2" class="_mt">&nbsp;</font></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td><font size="2" class="_mt">&nbsp;</font></td></tr> <tr><td><font size="2" class="_mt">&nbsp;</font></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td colspan="4"> <div align="center"><strong><font size="2" class="_mt">Three Months Ended</font></strong></div></td></tr> <tr><td><font size="2" class="_mt">&nbsp;</font></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td colspan="4"> <div align="center"><strong><font size="2" class="_mt">March 31,</font></strong></div></td></tr> <tr><td width="390"><font size="2" class="_mt">&nbsp;</font></td> <td width="20"><font size="2" class="_mt">&nbsp;</font></td> <td width="61"> <div align="center"><u><strong><font size="2" class="_mt">2011</font></strong></u></div></td> <td width="20"><font size="2" class="_mt">&nbsp;</font></td> <td width="20"><font size="2" class="_mt">&nbsp;</font></td> <td width="61"> <div align="center"><u><strong><font size="2" class="_mt">2010</font></strong></u></div></td></tr> <tr><td><font size="2" class="_mt">&nbsp;</font></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td colspan="4"> <div align="center"><em><font size="2" class="_mt">($ in millions)</font></em></div></td></tr> <tr><td><font size="2" class="_mt">&nbsp;</font></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td><font size="2" class="_mt">&nbsp;</font></td></tr> <tr><td><font size="2" class="_mt">Net income</font></td> <td> <div align="right"><font size="2" class="_mt">$</font></div></td> <td><font size="2" class="_mt"> </font> <div align="right"><font size="2" class="_mt">325</font></div><font size="2" class="_mt"> </font></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td> <div align="right"><font size="2" class="_mt">$</font></div></td> <td><font size="2" class="_mt"> </font> <div align="right"><font size="2" class="_mt">257</font></div><font size="2" class="_mt"> </font></td></tr> <tr><td><font size="2" class="_mt">Other comprehensive income</font></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td><font size="2" class="_mt"> </font> <div style="border-bottom: thin solid;" align="right"><font size="2" class="_mt">19</font></div><font size="2" class="_mt"> </font></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td><font size="2" class="_mt"> </font> <div style="border-bottom: thin solid;" align="right"><font size="2" class="_mt">19</font></div><font size="2" class="_mt"> </font></td></tr> <tr><td><font size="2" class="_mt">&nbsp;</font></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td><font size="2" class="_mt">&nbsp;</font></td></tr> <tr><td><font size="2" class="_mt">&nbsp;&nbsp;&nbsp;&nbsp;Total comprehensive income</font></td> <td> <div align="right"><font size="2" class="_mt">$</font></div></td> <td><font size="2" class="_mt"> </font> <div style="border-bottom: double;" align="right"><font size="2" class="_mt">344</font></div><font size="2" class="_mt"> </font></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td> <div align="right"><font size="2" class="_mt">$</font></div></td> <td><font size="2" class="_mt"> </font> <div style="border-bottom: double;" align="right"><font size="2" class="_mt">276</font></div><font size="2" class="_mt"> </font></td></tr></table><font size="2" class="_mt"> </font> <p align="left"><font size="2" class="_mt">"Other comprehensive income" in 2011 and 2010 reflects primarily, net of 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$Duration_1_1_2011_To_3_31_2011http://www.sec.gov/CIK0000702165duration2011-01-01T00:00:002011-03-31T00:00:00Unit12Standardhttp://www.xbrl.org/2003/iso4217USDiso42170Unit14Dividehttp://www.xbrl.org/2003/iso4217USDiso4217http://www.xbrl.org/2003/instancesharesxbrli0Unit1Standardhttp://www.xbrl.org/2003/instancesharesxbrli0Unit13Standardhttp://www.xbrl.org/2003/instancepurexbrli0USDUSD$2true0us-gaap_EarningsPerShareAbstractus-gaaptruenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00falsefalsefalsefalsefalseOtherxbrli:stringItemTypestringNo definition available.falsefalse3false0nsc_ScheduleOfEarningsPerShareBasicAndDilutedTableTextBlocknscfalsenadurationTabular disclosure of an entity's basic and diluted earnings per share calculations.falsefalsefalsefalsefalsefalsefalsefalsefalsefalseterselabel1falsefalsefalse00<div> <table style="font-size: 20px;" border="0" width="986"> <tr><td><font size="2" class="_mt">&nbsp;</font></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td><font size="2" class="_mt">&nbsp;</font></td></tr> <tr><td><font size="2" class="_mt">&nbsp;</font></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td colspan="10"> <div align="center"><strong><font size="2" class="_mt">Three months ended March 31,</font></strong></div></td></tr> <tr><td><font size="2" class="_mt">&nbsp;</font></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td width="61"> <div align="center"><u><strong><font size="2" class="_mt">2011</font></strong></u></div></td> <td width="18"><font size="2" class="_mt">&nbsp;</font></td> <td width="18"><font size="2" class="_mt">&nbsp;</font></td> <td width="61"> <div align="center"><u><strong><font size="2" class="_mt">2010</font></strong></u></div></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td width="61"> <div align="center"><u><strong><font size="2" class="_mt">2011</font></strong></u></div></td> <td width="18"><font size="2" class="_mt">&nbsp;</font></td> <td width="18"><font size="2" class="_mt">&nbsp;</font></td> <td width="61"> <div align="center"><u><strong><font size="2" class="_mt">2010</font></strong></u></div></td></tr> <tr><td width="524"><font size="2" class="_mt">&nbsp;</font></td> <td width="19"><font size="2" class="_mt">&nbsp;</font></td> <td colspan="4"> <div style="border-bottom: thin solid;" align="center"><strong><font size="2" class="_mt">Basic</font></strong></div></td> <td width="18"><font size="2" class="_mt">&nbsp;</font></td> <td width="18"><font size="2" class="_mt">&nbsp;</font></td> <td colspan="4"> <div style="border-bottom: thin solid;" align="center"><strong><font size="2" class="_mt">Diluted</font></strong></div></td></tr> <tr><td><font size="2" class="_mt">&nbsp;</font></td> <td colspan="8"><em><font size="2" class="_mt">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;($ in millions except per share, shares in millions)</font></em></td></tr> <tr><td><font size="2" class="_mt">&nbsp;</font></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td><font size="2" class="_mt">&nbsp;</font></td></tr> <tr><td><font size="2" class="_mt">Net income</font></td> <td> <div align="right"><font size="2" class="_mt">$</font></div></td> <td> <div align="right"><font size="2" class="_mt">325&nbsp;</font></div></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td> <div align="right"><font size="2" class="_mt">$</font></div></td> <td> <div align="right"><font size="2" class="_mt">257&nbsp;</font></div></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td> <div align="right"><font size="2" class="_mt">$</font></div></td> <td> <div align="right"><font size="2" class="_mt">325&nbsp;</font></div></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td> <div align="right"><font size="2" class="_mt">$</font></div></td> <td> <div align="right"><font size="2" class="_mt">257&nbsp;</font></div></td></tr> <tr><td><font size="2" class="_mt">Dividend equivalent payments</font></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td> <div style="border-bottom: thin solid;" align="right"><font size="2" class="_mt">(2)</font></div></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td> <div style="border-bottom: thin solid;" align="right"><font size="2" class="_mt">(2)</font></div></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td> <div style="border-bottom: thin solid;" align="right"><font size="2" class="_mt">(2)</font></div></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td> <div style="border-bottom: thin solid;" align="right"><font size="2" class="_mt">(2)</font></div></td></tr> <tr><td><font size="2" class="_mt">Income available to common stockholders</font></td> <td> <div align="right"><font size="2" class="_mt">$</font></div></td> <td><font size="2" class="_mt"> </font> <div align="right"><font size="2" class="_mt">323&nbsp;</font></div><font size="2" class="_mt"> </font></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td> <div align="right"><font size="2" class="_mt">$</font></div></td> <td><font size="2" class="_mt"> </font> <div align="right"><font size="2" class="_mt">255&nbsp;</font></div><font size="2" class="_mt"> </font></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td> <div align="right"><font size="2" class="_mt">$</font></div></td> <td><font size="2" class="_mt"> </font> <div align="right"><font size="2" class="_mt">323&nbsp;</font></div><font size="2" class="_mt"> </font></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td> <div align="right"><font size="2" class="_mt">$</font></div></td> <td><font size="2" class="_mt"> </font> <div align="right"><font size="2" class="_mt">255&nbsp;</font></div><font size="2" class="_mt"> </font></td></tr> <tr><td><font size="2" class="_mt">&nbsp;</font></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td><font size="2" class="_mt">&nbsp;</font></td></tr> <tr><td><font size="2" class="_mt">Weighted-average shares outstanding</font></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td> <div style="border-bottom: thin solid;" align="right"><font size="2" class="_mt">355.2&nbsp;</font></div></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td> <div style="border-bottom: thin solid;" align="right"><font size="2" class="_mt">369.5&nbsp;</font></div></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td><font size="2" class="_mt"> </font> <div align="right"><font size="2" class="_mt">355.2&nbsp;</font></div><font size="2" class="_mt"> </font></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td><font size="2" class="_mt"> </font> <div align="right"><font size="2" class="_mt">369.5&nbsp;</font></div><font size="2" class="_mt"> </font></td></tr> <tr><td><font size="2" class="_mt">Dilutive effect of outstanding options and share-settled awards</font></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td> <div style="border-bottom: thin solid;" align="right"><font size="2" class="_mt">5.3&nbsp;</font></div></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td> <div style="border-bottom: thin solid;" align="right"><font size="2" class="_mt">5.4&nbsp;</font></div></td></tr> <tr><td><font size="2" class="_mt">Adjusted weighted-average shares outstanding</font></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td> <div style="border-bottom: thin solid;" align="right"><font size="2" class="_mt">360.5&nbsp;</font></div></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td> <div style="border-bottom: thin solid;" align="right"><font size="2" class="_mt">374.9&nbsp;</font></div></td></tr> <tr><td><font size="2" class="_mt">Earnings per share</font></td> <td> <div align="right"><font size="2" class="_mt">$</font></div></td> <td><font size="2" class="_mt"> </font> <div style="border-bottom: double;" align="right"><font size="2" class="_mt">0.91&nbsp;</font></div><font size="2" class="_mt"> </font></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td> <div align="right"><font size="2" class="_mt">$</font></div></td> <td><font size="2" class="_mt"> </font> <div style="border-bottom: double;" align="right"><font size="2" class="_mt">0.69&nbsp;</font></div><font size="2" class="_mt"> </font></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td> <div align="right"><font size="2" class="_mt">$</font></div></td> <td><font size="2" class="_mt"> </font> <div style="border-bottom: double;" align="right"><font size="2" class="_mt">0.90&nbsp;</font></div><font size="2" class="_mt"> </font></td> <td><font size="2" class="_mt">&nbsp;</font></td> <td> <div align="right"><font size="2" class="_mt">$</font></div></td> <td><font size="2" class="_mt"> </font> <div style="border-bottom: double;" align="right"><font size="2" class="_mt">0.68&nbsp;</font></div><font size="2" class="_mt"> </font></td></tr></table> </div>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; Three months ended MarchfalsefalsefalsefalsefalseOtherus-types:textBlockItemTypestringTabular disclosure of an entity's basic and diluted earnings per share calculations.No authoritative reference available.falsefalse12Earnings Per Share (Unaudited) (Tables)UnKnownUnKnownUnKnownUnKnownfalsetrue