10-Q

UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

WASHINGTON, D.C. 20549

FORM 10-Q

(Mark One)

x QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934

  For the quarterly period ended March 31, 2013

OR

o 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            1-6324

BNSF RAILWAY COMPANY

(Exact name of registrant as specified in its charter)

Delaware	41-6034000
(State or other jurisdiction of incorporation or organization)	(I.R.S. Employer Identification No.)

2650 Lou Menk Drive

Fort Worth, Texas

(Address of principal executive offices)

76131-2830

(Zip Code)

(800) 795-2673

(Registrant’s telephone number, including area code)

Indicate by check mark whether the registrant (1) has filed all reports required to be filed by Section 13 or 15(d) of the Securities Exchange Act of 1934 during the preceding 12 months (or for such shorter period that the registrant was required to file such reports), and (2) has been subject to such filing requirements for the past 90 days.
	Yes  [x]  No  []
Indicate by check mark whether the registrant has submitted electronically and posted on its corporate Web site, if any, every Interactive Data File required to be submitted and posted pursuant to Rule 405 of Regulation S-T (§232.405 of this chapter) during the preceding 12 months (or for such shorter period that the registrant was required to submit and post such files).
	Yes  [x]  No  []
Indicate by check mark whether the registrant is a large accelerated filer, an accelerated filer, a non-accelerated filer, or a smaller reporting company. See the definitions of “large accelerated filer”, “accelerated filer” and “smaller reporting company” in Rule 12b-2 of the Exchange Act.
Large accelerated filer [  ]  Accelerated filer  [  ]   Non-accelerated filer  [x]  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	Shares Outstanding at May 3, 2013
Common stock, $1.00 par value	1,000 shares

Registrant meets the conditions set forth in General Instruction H (1) (a) and (b) of Form 10-Q and is therefore filing this Form 10-Q with the reduced disclosure format permitted by General Instruction H (2).

Table of Contents

PART I	FINANCIAL INFORMATION	PAGE
Item 1.	Financial Statements	3
Item 2.	Management’s Narrative Analysis of Results of Operations	19
Item 4.	Controls and Procedures	22
PART II	OTHER INFORMATION
Item 6.	Exhibits	23
Signatures		S-1
Exhibits		E-1

2

PART I

FINANCIAL INFORMATION

Item 1. Financial Statements.

BNSF RAILWAY COMPANY and SUBSIDIARIES

CONSOLIDATED STATEMENTS OF INCOME

(In millions)

(Unaudited)

	Three Months Ended March 31,
	2013			2012
Revenues	$	5,180		$	4,926
Operating expenses:
Compensation and benefits	1,129			1,110
Fuel	1,122			1,095
Purchased services	543			522
Depreciation and amortization	483			462
Equipment rents	198			202
Materials and other	237			285
Total operating expenses	3,712			3,676
Operating income	1,468			1,250
Interest expense	24			15
Interest income, related parties	(19		)	(12		)
Other expense, net	1			2
Income before income taxes	1,462			1,245
Income tax expense	550			456
Net income	$	912		$	789

See accompanying Notes to Consolidated Financial Statements.

3

BNSF RAILWAY COMPANY and SUBSIDIARIES

CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME

(In millions)

(Unaudited)

	Three Months Ended March 31,
	2013			2012
Net income	$	912		$	789
Other comprehensive income:
Change in amortization of accumulated actuarial losses, net of tax expense of $2 million and $2 million, respectively	3			2
Change in fuel hedge mark-to-market, net of tax benefit of $0 million and $4 million, respectively	—			(8		)
Change in accumulated other comprehensive income of equity method investees	(2		)	(2		)
Other comprehensive income (loss), net of tax	1			(8		)
Total comprehensive income	$	913		$	781

See accompanying Notes to Consolidated Financial Statements.

4

BNSF RAILWAY COMPANY and SUBSIDIARIES

CONSOLIDATED BALANCE SHEETS

(In millions)

(Unaudited)

	March 31, 2013			December 31, 2012
ASSETS
Current assets:
Cash and cash equivalents	$	49		$	350
Accounts receivable, net	1,562			1,146
Materials and supplies	839			800
Current portion of deferred income taxes	207			340
Other current assets	243			145
Total current assets	2,900			2,781
Property and equipment, net of accumulated depreciation of $1,717 and $1,623, respectively	50,382			50,056
Goodwill	14,803			14,803
Intangible assets, net	1,038			1,114
Other assets	1,900			1,870
Total assets	$	71,023		$	70,624
LIABILITIES AND STOCKHOLDER’S EQUITY
Current liabilities:
Accounts payable and other current liabilities	$	2,759		$	2,970
Long-term debt due within one year	173			203
Total current liabilities	2,932			3,173
Deferred income taxes	16,535			16,510
Long-term debt	1,587			1,622
Intangible liabilities, net	1,151			1,214
Pension and retiree health and welfare liability	755			786
Casualty and environmental liabilities	738			750
Other liabilities	976			944
Total liabilities	24,674			24,999
Commitments and contingencies (see Notes 6 and 7)
Stockholder’s equity:
Common stock, $1 par value, 1,000 shares authorized; issued and outstanding and paid-in capital	42,920			42,920
Retained earnings	10,287			9,375
Intercompany notes receivable	(6,614		)	(6,425		)
Accumulated other comprehensive loss	(244		)	(245		)
Total stockholder’s equity	46,349			45,625
Total liabilities and stockholder’s equity	$	71,023		$	70,624

See accompanying Notes to Consolidated Financial Statements.

5

BNSF RAILWAY COMPANY and SUBSIDIARIES

CONSOLIDATED STATEMENTS OF CASH FLOWS

(In millions)

(Unaudited)

	Three Months Ended March 31,
	2013			2012
OPERATING ACTIVITIES
Net income	$	912		$	789
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization	483			462
Deferred income taxes	156			143
Long-term casualty and environmental liabilities, net	(17		)	(46		)
Contribution to defined benefit pension plan	(25		)	(36		)
Other, net	(10		)	—
Changes in current assets and liabilities:
Accounts receivable, net	(417		)	16
Materials and supplies	(38		)	(97		)
Other current assets	(101		)	(97		)
Accounts payable and other current liabilities	(245		)	(140		)
Net cash provided by operating activities	698			994
INVESTING ACTIVITIES
Capital expenditures excluding equipment	(546		)	(528		)
Acquisition of equipment	(186		)	(298		)
Other, net	(20		)	(130		)
Net cash used for investing activities	(752		)	(956		)
FINANCING ACTIVITIES
Payments on long-term debt	(58		)	(46		)
Net (increase) decrease in intercompany notes receivable classified as equity	(189		)	24
Other, net	—			1
Net cash used for financing activities	(247		)	(21		)
(Decrease) Increase in cash and cash equivalents	(301		)	17
Cash and cash equivalents:
Beginning of period	350			293
End of period	$	49		$	310
SUPPLEMENTAL CASH FLOW INFORMATION
Interest paid, net of amounts capitalized	$	33		$	30
Capital investments accrued but not yet paid	$	104		$	118
Income taxes paid, net of refunds	$	648		$	273

See accompanying Notes to Consolidated Financial Statements. 

6

BNSF RAILWAY COMPANY and SUBSIDIARIES

CONSOLIDATED STATEMENTS OF CHANGES IN STOCKHOLDER’S EQUITY

(In millions)

(Unaudited)

	Common Stock and Paid-in Capital		Retained Earnings		Intercompany Notes Receivable			Accumulated Other Comprehensive Income (Loss)			Total Stockholder’s Equity
Balance at December 31, 2012	$	42,920	$	9,375	$	(6,425	)	$	(245	)	$	45,625
Change in intercompany notes receivable	—		—		(189		)	—			(189		)
Comprehensive income, net of tax	—		912		—			1			913
Balance at March 31, 2013	$	42,920	$	10,287	$	(6,614	)	$	(244	)	$	46,349

See accompanying Notes to Consolidated Financial Statements.

7

BNSF RAILWAY COMPANY and SUBSIDIARIES

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (Unaudited)

1. Accounting Policies and Interim Results

The Consolidated Financial Statements should be read in conjunction with BNSF Railway Company’s Annual Report on Form 10-K for the year ended December 31, 2012, including the financial statements and notes thereto. The Consolidated Financial Statements include the accounts of BNSF Railway Company and its majority-owned subsidiaries, all of which are separate legal entities (collectively BNSF Railway or the Company). BNSF Railway is a wholly-owned subsidiary of Burlington Northern Santa Fe, LLC (BNSF), and is the principal operating subsidiary of BNSF. All intercompany accounts and transactions have been eliminated.

On February 12, 2010, Berkshire Hathaway Inc., a Delaware corporation (Berkshire), acquired 100% of the outstanding shares of Burlington Northern Santa Fe Corporation common stock that it did not already own. The acquisition was completed through the merger (the Merger) of Burlington Northern Santa Fe Corporation with and into R Acquisition Company, LLC, a Delaware limited liability company and an indirect wholly-owned subsidiary of Berkshire (Merger Sub), with Merger Sub continuing as the surviving entity. In connection with the Merger, Merger Sub changed its name to “Burlington Northern Santa Fe, LLC” and remains an indirect, wholly-owned subsidiary of Berkshire. Berkshire's cost of acquiring BNSF was pushed-down to establish a new accounting basis for BNSF beginning as of February 13, 2010.

The results of operations for any interim period are not necessarily indicative of the results of operations to be expected for the entire year. In the opinion of management, the unaudited financial statements reflect all adjustments (consisting of only normal recurring adjustments, except as disclosed) necessary for a fair statement of BNSF Railway’s consolidated financial position as of March 31, 2013, and the results of operations for the three months ended March 31, 2013 and 2012.

Certain prior year amounts in the Consolidated Statements of Cash Flows have been reclassified to conform to the current presentation of capital expenditures. The reclassification did not affect the Company's previously reported results of operations or financial position.

2. Fuel

Fuel costs represented 30 percent of total operating expenses during both the three months ended March 31, 2013 and 2012.  The Company may enter into fuel hedge instruments from time to time; however, the Company has no unexpired hedge positions.

Derivative Activities

The Company had formally documented the relationship between the hedging instrument and the hedged item, as well as the risk management objective and strategy for the use of the hedging instrument. This documentation included linking the derivatives that were designated as fair value or cash flow hedges to specific assets or liabilities on the balance sheet, commitments or forecasted transactions. The Company assessed at the time a derivative contract was entered into, and at least quarterly thereafter, whether the derivative item was effective in offsetting the changes in fair value or cash flows. Any change in fair value resulting from ineffectiveness, as defined by authoritative accounting guidance related to derivatives and hedging, was recognized in current period earnings. For derivative instruments that were designated and qualified as cash flow hedges, the effective portion of the gain or loss on the derivative instrument was recorded in accumulated other comprehensive loss (AOCL) as a separate component of stockholder’s equity and reclassified into earnings in the period during which the hedge transaction affected earnings. Cash flows related to fuel derivatives are classified as operating activities in the Consolidated Statements of Cash Flows.

8

BNSF RAILWAY COMPANY and SUBSIDIARIES

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (Unaudited) – (Continued)

The Effects of Derivative Instruments Gains and Losses for the Three Months Ended March 31, 2013 and 2012
Derivatives in ASC 815-20 Cash Flow Hedging Relationships
	Amount of Gain Recognized in Other Comprehensive Income (OCI) on Derivatives (Effective Portion)
	2013		2012
Fuel Contracts	$	—	$	9
Total derivatives	$	—	$	9

		Amount of Gain Recognized from AOCL into Income (Effective Portion)
	Location of Gain Recognized	2013		2012
	from AOCL into Income
Fuel Contracts	Fuel expense	$	—	$	21
Total derivatives		$	—	$	21

		Amount of Loss Recognized in Income on Derivatives (Ineffective Portion and Amount Excluded from Effectiveness Testing)a
	Location of Loss Recognized	2013		2012
	in Income on Derivatives
Fuel Contracts	Fuel expense	$	—	$	(2	)
Total derivatives		$	—	$	(2	)

^a  No portion of the loss was excluded from the assessment of hedge effectiveness for the periods then ended.

The Company utilized a market approach using the forward commodity price for the periods hedged to value its fuel-derivative swaps. As such, the fair values of these instruments were classified as Level 2 valuations under authoritative accounting guidance related to fair value measurements.

Additional disclosure related to derivative instruments is included in Note 10 to the Consolidated Financial Statements.

3. Accounts Receivable, Net

Accounts receivable, net consists of freight and other receivables, reduced by an allowance for bill adjustments and uncollectible accounts, based upon expected collectibility. At March 31, 2013, and December 31, 2012, $49 million and $48 million, respectively, of such allowances had been recorded.

At March 31, 2013 and December 31, 2012, $30 million and $35 million, respectively, of accounts receivable were greater than 90 days old.

9

BNSF RAILWAY COMPANY and SUBSIDIARIES

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (Unaudited) – (Continued)

4. Other Intangible Assets and Liabilities

Amortized intangible assets and liabilities were as follows (in millions):

	As of March 31, 2013				As of December 31, 2012
	Gross Carrying Amount		Accumulated Amortization		Gross Carrying Amount		Accumulated Amortization
Amortized intangible assets	$	2,013	$	975	$	2,013	$	899
Amortized intangible liabilities	$	2,056	$	905	$	2,056	$	842

Amortized intangible assets primarily consisted of internally developed software and franchise and customer assets. Amortized intangible liabilities primarily consisted of customer and shortline contracts which were in an unfavorable position at the date of Merger.

Amortized intangible assets and liabilities are amortized based on the estimated pattern in which the economic benefits are expected to be consumed or on a straight-line basis over their estimated economic lives.

Amortization of intangible assets and liabilities was as follows (in millions):

	Three Months Ended March 31,
	2013		2012
Amortization of intangible assets	$	76	$	77
Amortization of intangible liabilities	$	63	$	70

Amortization of intangible assets and liabilities for the next five years is expected to approximate the following (in millions):

	Amortization of intangible assets		Amortization of intangible liabilities
Remainder of 2013	$	230	$	189
2014	$	306	$	179
2015	$	54	$	115
2016	$	31	$	101
2017	$	31	$	96

5. Other Assets

In July 2010, the Company entered into a low-income housing partnership (the Partnership) as the limited partner, holding a 99.9% interest in the Partnership. The Partnership is a variable interest entity (VIE), with the purpose of developing and operating low-income housing rental properties. Recovery of the Company’s investment is accomplished through the utilization of low-income housing tax credits and the tax benefits of Partnership losses. The general partner, who holds a 0.1% interest in the Partnership, is an unrelated third party and is responsible for controlling and managing the business and financial operation of the Partnership. As the Company does not have the power to direct the activities that most significantly impact the Partnership’s economic performance, the Company is not the primary beneficiary and therefore, does not consolidate the Partnership. As of March 31, 2013, the assets of the unconsolidated Partnership totaled approximately $465 million. The Company does not provide financial support to the Partnership that it was not previously contractually obligated to provide.

10

BNSF RAILWAY COMPANY and SUBSIDIARIES

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (Unaudited) – (Continued)

The Company has accounted for its investment in the Partnership using the effective yield method. The risk of loss of the Company's investment in the Partnership is considered low as an affiliate of the general partner has provided certain guarantees of tax credits and minimum annual returns. The Company’s maximum exposure to loss related to the Partnership is the unamortized investment balance. The following table provides information as of March 31, 2013 (in millions):

Unamortized investment balance classified as Other Assets		Remaining commitments classified as Other Liabilities		Maximum exposure to loss
$	422	$	18	$	422

The remaining commitment of $18 million is due at the end of 2013.

6. Debt

Fair Value of Debt Instruments

At March 31, 2013, and December 31, 2012, the fair value of BNSF Railway's debt, excluding capital leases, was $848 million and $892 million, respectively, while the book value, which also excludes capital leases and the associated unamortized fair value adjustment under acquisition method accounting related to capital leases, was $746 million and $778 million, respectively. The fair value of BNSF Railway's debt is primarily based on market value price models using observable market-based data for the same or similar issues, or on the estimated rates that would be offered to BNSF Railway for debt of the same remaining maturities (Level 2 inputs). The fair value of the Company's cash equivalents approximates its carrying value due to the short-term maturities of these instruments.

Guarantees

As of March 31, 2013, BNSF Railway has not been called upon to perform under the guarantees specifically disclosed in this footnote and does not anticipate a significant performance risk in the foreseeable future.

Debt and other obligations of non-consolidated entities guaranteed by the Company as of March 31, 2013, were as follows (dollars in millions):

	Guarantees
	BNSF Railway Ownership Percentage		Principal Amount Guaranteed		Maximum Future Payments		Maximum Recourse Amounta		Remaining Term (in years)	Capitalized Obligations
Kinder Morgan Energy Partners, L.P.	0.5	%	$	190	$	190	$	—	Termination of Ownership	$	2	b
Chevron Phillips Chemical Company LP	—	%	N/Ad		N/Ad		N/Ad		4	$	7	c
All other	—	%	$	9	$	14	$	—	Various	$	—

^a  Reflects the maximum amount the Company could recover from a third party other than the counterparty.

^b  Reflects capitalized obligations that are recorded on the Company’s Consolidated Balance Sheet.

^c  Reflects the asset and corresponding liability for the fair value of these guarantees required by authoritative accounting guidance related to guarantees.

^d  There is no cap to the liability that can be sought from BNSF Railway for BNSF Railway’s negligence or the negligence of the indemnified party. However, BNSF Railway could receive reimbursement from certain insurance policies if the liability exceeds a certain amount.

Kinder Morgan Energy Partners, L.P.

Santa Fe Pacific Pipelines, Inc., an indirect, wholly-owned subsidiary of BNSF Railway, has a guarantee in connection with its remaining special limited partnership interest in Santa Fe Pacific Pipeline Partners, L.P. (SFPP), a subsidiary of Kinder Morgan Energy Partners, L.P., to be paid only upon default by the partnership. All obligations with respect to the guarantee will cease upon termination of ownership rights, which would occur upon a put notice issued by BNSF Railway or the exercise of the call rights by the general partners of SFPP.

11

BNSF RAILWAY COMPANY and SUBSIDIARIES

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (Unaudited) – (Continued)

Chevron Phillips Chemical Company LP

In the third quarter of 2007, BNSF Railway entered into an indemnity agreement with Chevron Phillips Chemical Company LP (Chevron Phillips), granting certain rights of indemnity from BNSF Railway, in order to facilitate access to a new storage facility. Under certain circumstances, payment under this obligation may be required in the event Chevron Phillips were to incur certain liabilities or other incremental costs resulting from trackage access.

All Other

As of March 31, 2013, BNSF Railway guaranteed $9 million of debt. These guarantees expire between 2013 and 2026.

Indemnities

In the ordinary course of business, BNSF Railway enters into agreements with third parties that include indemnification clauses. The Company believes that these clauses are generally customary for the types of agreements in which they are included. At times, these clauses may involve indemnification for the acts of the Company, its employees and agents, indemnification for another party’s acts, indemnification for future events, indemnification based upon a certain standard of performance, indemnification for liabilities arising out of the Company’s use of leased equipment or other property, or other types of indemnification. Despite the uncertainty whether events which would trigger the indemnification obligations would ever occur, the Company does not believe that these indemnity agreements will have a material adverse effect on the Company’s results of operations, financial position or liquidity. Additionally, the Company believes that, due to lack of historical payment experience, the fair value of indemnities cannot be estimated with any amount of certainty. However, the fair value of any such amount would be immaterial to the Consolidated Financial Statements. Agreements that reflect unique circumstances, particularly agreements that contain guarantees that indemnify for another party’s acts, are disclosed separately, if appropriate. Unless separately disclosed above, no fair value liability related to indemnities has been recorded in the Consolidated Financial Statements.

Variable Interest Entities - Leases

BNSF Railway has entered into various equipment lease transactions in which the structure of the lease contains VIEs. These VIEs were created solely for the lease transactions and have no other activities, assets or liabilities outside of the lease transactions. In some of the arrangements, BNSF Railway has the option to purchase some or all of the equipment at a fixed-price, thereby creating variable interests for BNSF Railway in the VIEs. The future minimum lease payments associated with the VIE leases were approximately $4 billion as of March 31, 2013.

In the event the leased equipment is destroyed, BNSF Railway is obligated to either replace the equipment or pay a fixed loss amount. The inclusion of the fixed loss amount is a standard clause within equipment lease arrangements. Historically, BNSF Railway has not incurred significant losses related to this clause. As such, it is not anticipated that the maximum exposure to loss would materially differ from the future minimum lease payments.

BNSF Railway does not provide financial support to the VIEs that it was not previously contractually obligated to provide.

BNSF Railway maintains and operates the equipment based on contractual obligations within the lease arrangements, which set specific guidelines consistent within the industry. As such, BNSF Railway has no control over activities that could materially impact the fair value of the leased equipment. BNSF Railway does not hold the power to direct the activities of the VIEs and therefore does not control the ongoing activities that have a significant impact on the economic performance of the VIEs. Additionally, BNSF Railway does not have the obligation to absorb losses of the VIEs or the right to receive benefits of the VIEs that could potentially be significant to the VIEs. Depending on market conditions, the fixed-price purchase options could potentially provide benefit to the Company; however, any benefits potentially received from a fixed-price purchase option are expected to be minimal. Based on these factors, BNSF Railway is not the primary beneficiary of the VIEs. As BNSF Railway is not the primary beneficiary and the VIE leases are classified as operating leases, there are no assets or liabilities related to the VIEs recorded in the Company's Consolidated Balance Sheet.

12

BNSF RAILWAY COMPANY and SUBSIDIARIES

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (Unaudited) – (Continued)

7. Commitments and Contingencies

Personal Injury

Personal injury claims, including asbestos claims and employee work-related injuries and third-party injuries (collectively, other personal injury), are a significant expense for the railroad industry. Personal injury claims by BNSF Railway employees are subject to the provisions of the Federal Employers’ Liability Act (FELA) rather than state workers’ compensation laws. FELA’s system of requiring the finding of fault, coupled with unscheduled awards and reliance on the jury system, contributed to increased expenses in past years. Other proceedings include claims by non-employees for punitive as well as compensatory damages. A few proceedings purport to be class actions. The variability present in settling these claims, including non-employee personal injury and matters in which punitive damages are alleged, could result in increased expenses in future years. BNSF Railway has implemented a number of safety programs designed to reduce the number of personal injuries as well as the associated claims and personal injury expense.

Other than the fair value adjustments recorded in the application of acquisition method accounting related to the Merger, as discussed in Note 1 to the Consolidated Financial Statements, BNSF Railway records an undiscounted liability for personal injury claims when the expected loss is both probable and reasonably estimable. The liability and ultimate expense projections are estimated using standard actuarial methodologies. Liabilities recorded for unasserted personal injury claims are based on information currently available. Due to the inherent uncertainty involved in projecting future events such as the number of claims filed each year, developments in judicial and legislative standards and the average costs to settle projected claims, actual costs may differ from amounts recorded. BNSF Railway has obtained insurance coverage for certain claims, as discussed under the heading “BNSF Insurance Company.” Expense accruals and any required adjustments are classified as materials and other in the Consolidated Statements of Income.

Asbestos

The Company is party to a number of personal injury claims by employees and non-employees who may have been exposed to asbestos. The heaviest exposure for BNSF Railway employees was due to work conducted in and around the use of steam locomotive engines that were phased out between the years of 1950 and 1967. However, other types of exposures, including exposure from locomotive component parts and building materials, continued after 1967 until they were substantially eliminated at BNSF Railway by 1985.

BNSF Railway assesses its unasserted asbestos liability exposure on an annual basis during the third quarter. BNSF Railway determines its asbestos liability by estimating its exposed population, the number of claims likely to be filed, the number of claims that will likely require payment and the estimated cost per claim. Estimated filing and dismissal rates and average cost per claim are determined utilizing recent claim data and trends.

Throughout the year, BNSF Railway monitors actual experience against the number of forecasted claims and expected claim payments and will record adjustments to the Company’s estimates as necessary.

Based on BNSF Railway’s estimate of the potentially exposed employees and related mortality assumptions, it is anticipated that unasserted asbestos claims will continue to be filed through the year 2050. The Company recorded an amount for the full estimated filing period through 2050 because it had a relatively finite exposed population (former and current employees hired prior to 1985), which it was able to identify and reasonably estimate and about which it had obtained reliable demographic data (including age, hire date and occupation) derived from industry or BNSF Railway specific data that was the basis for the study. BNSF Railway projects that approximately 60, 80 and 95 percent of the future unasserted asbestos claims will be filed within the next 10, 15 and 25 years, respectively.

13

BNSF RAILWAY COMPANY and SUBSIDIARIES

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (Unaudited) – (Continued)

Other Personal Injury

BNSF Railway estimates its other personal injury liability claims and expense quarterly based on the covered population, activity levels and trends in frequency and the costs of covered injuries. Estimates include unasserted claims except for certain repetitive stress and other occupational trauma claims that allegedly result from prolonged repeated events or exposure. Such claims are estimated on an as-reported basis because the Company cannot estimate the range of reasonably possible loss due to other non-work related contributing causes of such injuries and the fact that continued exposure is required for the potential injury to manifest itself as a claim. BNSF Railway has not experienced any significant adverse trends related to these types of claims in recent years.

BNSF Railway monitors quarterly actual experience against the number of forecasted claims to be received, the forecasted number of claims closing with payment and expected claim payments. Adjustments to the Company’s estimates are recorded quarterly as necessary or more frequently as new events or revised estimates develop.

The following table summarizes the activity in the Company’s accrued obligations for asbestos and other personal injury matters (in millions):

	Three Months Ended March 31,
	2013			2012
Beginning balance	$	462		$	540
Accruals	26			23
Payments	(35		)	(57		)
Ending balance	$	453		$	506

At March 31, 2013, $95 million was included in current liabilities. In addition, defense and processing costs, which are recorded on an as-reported basis, were not included in the recorded liability. The Company is primarily self-insured for personal injury claims.

Because of the uncertainty surrounding the ultimate outcome of personal injury claims, it is reasonably possible that future costs to settle personal injury claims may range from approximately $405 million to $520 million. However, BNSF Railway believes that the $453 million recorded at March 31, 2013, is the best estimate of the Company’s future obligation for the settlement of personal injury claims.

The amounts recorded by BNSF Railway for personal injury liabilities were based upon currently known facts. Future events, such as the number of new claims to be filed each year, the average cost of disposing of claims, as well as the numerous uncertainties surrounding personal injury litigation in the United States, could cause the actual costs to be higher or lower than projected.

Although the final outcome of personal injury matters cannot be predicted with certainty, considering among other things the meritorious legal defenses available and liabilities that have been recorded, it is the opinion of BNSF Railway that none of these items, when finally resolved, will have a material adverse effect on the Company’s financial position or liquidity. However, the occurrence of a number of these items in the same period could have a material adverse effect on the results of operations in a particular quarter or fiscal year.

14

BNSF RAILWAY COMPANY and SUBSIDIARIES

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (Unaudited) – (Continued)

BNSF Insurance Company

Burlington Northern Santa Fe Insurance Company, Ltd. (BNSF IC), a wholly-owned subsidiary of BNSF, provides insurance coverage for certain risks, FELA claims, railroad protective and force account insurance claims and certain excess general liability and property coverage, and certain other claims which are subject to reinsurance. During the three months ended March 31, 2013 and 2012, BNSF IC wrote insurance coverage with premiums totaling $58 million and $82 million, respectively, for BNSF Railway, net of reimbursements from third parties. During this same time, BNSF Railway recognized $25 million and $29 million, respectively, in expense related to those premiums, which is classified as purchased services in the Consolidated Statements of Income. At March 31, 2013, unamortized premiums remaining on the Consolidated Balance Sheet were $42 million. During the three months ended March 31, 2013 and 2012, BNSF IC made claim payments totaling $42 million and $54 million, respectively, for settlement of covered claims. At March 31, 2013 and December 31, 2012, claims receivables from BNSF IC were $21 million and $5 million, respectively.

Environmental

The Company’s operations, as well as those of its competitors, are subject to extensive federal, state and local environmental regulation. BNSF Railway’s operating procedures include practices to protect the environment from the risks inherent in railroad operations, which frequently involve transporting chemicals and other hazardous materials. Additionally, many of BNSF Railway’s land holdings are and have been used for industrial or transportation-related purposes or leased to commercial or industrial companies whose activities may have resulted in discharges onto the property. As a result, BNSF Railway is subject to environmental cleanup and enforcement actions. In particular, the federal Comprehensive Environmental Response, Compensation and Liability Act of 1980 (CERCLA), also known as the Superfund law, as well as similar state laws, generally impose joint and several liability for cleanup and enforcement costs on current and former owners and operators of a site without regard to fault or the legality of the original conduct. BNSF Railway has been notified that it is a potentially responsible party (PRP) for study and cleanup costs at Superfund sites for which investigation and remediation payments are or will be made or are yet to be determined (the Superfund sites) and, in many instances, is one of several PRPs. In addition, BNSF Railway may be considered a PRP under certain other laws. Accordingly, under CERCLA and other federal and state statutes, BNSF Railway may be held jointly and severally liable for all environmental costs associated with a particular site. If there are other PRPs, BNSF Railway generally participates in the cleanup of these sites through cost-sharing agreements with terms that vary from site to site. Costs are typically allocated based on such factors as relative volumetric contribution of material, the amount of time the site was owned or operated and/or the portion of the total site owned or operated by each PRP.

BNSF Railway is involved in a number of administrative and judicial proceedings and other mandatory cleanup efforts for 246 sites, including 16 Superfund sites, at which it is participating in the study or cleanup, or both, of alleged environmental contamination.

Liabilities for environmental cleanup costs are recorded when BNSF Railway’s liability for environmental cleanup is probable and reasonably estimable. Subsequent adjustments to initial estimates are recorded as necessary based upon additional information developed in subsequent periods. Environmental costs include initial site surveys and environmental studies as well as costs for remediation of sites determined to be contaminated.

BNSF Railway estimates the ultimate cost of cleanup efforts at its known environmental sites on an annual basis during the third quarter. Ultimate cost estimates for environmental sites are based on current estimated percentage to closure ratios, possible remediation workplans and estimates of the costs and likelihood of each possible outcome, historical payment patterns, and benchmark patterns developed from data accumulated from industry and public sources, including the Environmental Protection Agency and other governmental agencies. These factors incorporate into the estimates experience gained from cleanup efforts at other similar sites.

Annual studies do not include: (i) contaminated sites of which the Company is not aware; (ii) additional amounts for third-party tort claims, which arise out of contaminants allegedly migrating from BNSF Railway property, due to a limited number of sites; or (iii) natural resource damage claims. BNSF Railway continues to estimate third-party tort claims on a site by site basis when the liability for such claims is probable and reasonably estimable. BNSF Railway’s recorded liability for third-party tort claims as of March 31, 2013, was $13 million.

15

BNSF RAILWAY COMPANY and SUBSIDIARIES

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (Unaudited) – (Continued)

On a quarterly basis, BNSF Railway monitors actual experience against the forecasted remediation and related payments made on existing sites and conducts ongoing environmental contingency analyses, which consider a combination of factors including independent consulting reports, site visits, legal reviews and analysis of the likelihood of other PRP's participation in, and their ability to pay for, cleanup. Adjustments to the Company’s estimates will continue to be recorded as necessary based on developments in subsequent periods. Additionally, environmental accruals, which are classified as materials and other in the Consolidated Statements of Income, include amounts for newly identified sites or contaminants, third-party claims and legal fees incurred for defense of third-party claims and recovery efforts.

The following table summarizes the activity in the Company’s accrued obligations for environmental matters (in millions):

	Three Months Ended March 31,
	2013			2012
Beginning balance	$	458		$	570
Accruals	—			3
Payments	(8		)	(15		)
Ending balance	$	450		$	558

At March 31, 2013, $70 million was included in current liabilities.

BNSF Railway’s environmental liabilities are not discounted. BNSF Railway anticipates that the majority of the accrued costs at March 31, 2013, will be paid over the next ten years, and no individual site is considered to be material.

Liabilities recorded for environmental costs represent BNSF Railway’s best estimate of its probable future obligation for the remediation and settlement of these sites and include both asserted and unasserted claims. Although recorded liabilities include BNSF Railway’s best estimate of all probable costs, without reduction for anticipated recoveries from third parties, BNSF Railway’s total cleanup costs at these sites cannot be predicted with certainty due to various factors such as the extent of corrective actions that may be required, evolving environmental laws and regulations, advances in environmental technology, the extent of other parties’ participation in cleanup efforts, developments in ongoing environmental analyses related to sites determined to be contaminated and developments in environmental surveys and studies of contaminated sites.

Because of the uncertainty surrounding these factors, it is reasonably possible that future costs for environmental liabilities may range from approximately $340 million to $620 million. However, BNSF Railway believes that the $450 million recorded at March 31, 2013, is the best estimate of the Company’s future obligation for environmental costs.

Although the final outcome of these environmental matters cannot be predicted with certainty, it is the opinion of BNSF Railway that none of these items, when finally resolved, will have a material adverse effect on the Company’s financial position or liquidity. However, the occurrence of a number of these items in the same period could have a material adverse effect on the results of operations in a particular quarter or fiscal year.

Other Claims and Litigation

In addition to asbestos, other personal injury and environmental matters discussed above, BNSF Railway and its subsidiaries are also parties to a number of other legal actions and claims, governmental proceedings and private civil suits arising in the ordinary course of business, including those related to disputes and complaints involving certain transportation rates and charges. Some of the legal proceedings include claims for punitive as well as compensatory damages, and a few proceedings purport to be class actions. Although the final outcome of these matters cannot be predicted with certainty, considering among other things the meritorious legal defenses available and liabilities that have been recorded along with applicable insurance, BNSF Railway currently believes that none of these items, when finally resolved, will have a material adverse effect on the Company’s financial position or liquidity. However, an unexpected adverse resolution of one or more of these items could have a material adverse effect on the results of operations in a particular quarter or fiscal year.

16

BNSF RAILWAY COMPANY and SUBSIDIARIES

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (Unaudited) – (Continued)

8. Employment Benefit Plans

Components of the net cost for the periods presented below for certain employee benefit plans were as follows (in millions):

	Pension Benefits
	Three Months Ended March 31,
Net Cost	2013			2012
Service cost	$	12		$	10
Interest cost	22			25
Expected return on plan assets	(31		)	(30		)
Amortization of net loss	4			3
Net cost recognized	$	7		$	8

	Retiree Health and Welfare Benefits
	Three Months Ended March 31,
Net Cost	2013		2012
Interest cost	$	3	$	3
Amortization of net loss	1		1
Net cost recognized	$	4	$	4

The Company is not required to make contributions to the BNSF Retirement Plan in 2013; however, the Company made a discretionary contribution of $25 million in March 2013.

9. Related Party Transactions

BNSF Railway is involved with BNSF and certain of its subsidiaries in related party transactions in the ordinary course of business, which include payments made on each other’s behalf and performance of services. Under the terms of a tax allocation agreement with BNSF, BNSF Railway made federal and state income tax payments, net of refunds, of $642 million and $273 million during the three months ended March 31, 2013 and 2012, respectively, which are reflected in changes in working capital in the Consolidated Statement of Cash Flows.

At March 31, 2013 and December 31, 2012, BNSF Railway had $367 million and $32 million, respectively, of intercompany receivables which are reflected in accounts receivable in the respective Consolidated Balance Sheets. At March 31, 2013 and December 31, 2012, BNSF Railway had $46 million and $109 million of intercompany payables, respectively, which are reflected in accounts payable in the respective Consolidated Balance Sheets. Net intercompany balances are settled in the ordinary course of business.

At March 31, 2013 and December 31, 2012, BNSF Railway had $6,614 million and $6,425 million, respectively, of intercompany notes receivable from BNSF. The $189 millionincrease in intercompany notes receivable was due to loans to BNSF of $574 million, partially offset by repayments received of $385 million during the three months ended March 31, 2013. All intercompany notes have a variable interest rate of 1.0 percent above the monthly average of the daily effective Federal Funds rate. Interest is collected semi-annually on all intercompany notes receivable. Interest income from intercompany notes receivable is presented in interest income, related parties in the Consolidated Statements of Income.

BNSF Railway earned revenues of $10 million during the both three months ended March 31, 2013 and 2012, for transportation services provided to BNSF Logistics, LLC, a wholly-owned, third-party logistics company, by BNSF Railway. Additionally, BNSF Railway purchased truck transportation services for the Company’s materials and supplies from BNSF Logistics of $9 million and $8 million during the three months ended March 31, 2013 and 2012, respectively, which were classified as purchased services in the Consolidated Statements of Income.

17

BNSF RAILWAY COMPANY and SUBSIDIARIES

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (Unaudited) – (Continued)

BNSF Railway engages in various arm's-length transactions with other affiliates in the ordinary course of business. BNSF Railway earned revenues for services provided to affiliates of $38 million and $10 million during the three months ended March 31, 2013 and 2012, respectively. Expenditures to affiliates totaled $6 million and $4 million during the three months ended March 31, 2013 and 2012, respectively.

Under various stock incentive plans, Berkshire (post-Merger) or BNSF (pre-Merger) granted options to BNSF Railway employees to purchase its common stock at a price not less than the fair market value at the date of grant. Certain employees of BNSF Railway also participated in other long-term incentive plans that utilized restricted shares/units.

10. Comprehensive Income

Other comprehensive income refers to revenues, expenses, gains and losses that under generally accepted accounting principles are included in comprehensive income, a component of Stockholder’s Equity within the Consolidated Balance Sheets, rather than net income on the Consolidated Statements of Income. Under existing accounting standards, other comprehensive income may include, among other things, unrecognized gains and losses and prior service credit related to pension and other postretirement benefit plans and accounting for derivative financial instruments, which qualify for cash flow hedge accounting.

The following table provides the components of accumulated other comprehensive loss by component (in millions):

	Defined Benefit Pension Itemsa			Equity Method Investments			Total
Balance at December 31, 2012	$	(241	)	$	(4	)	$	(245	)
Other comprehensive income before reclassifications	—			(2		)	(2		)
Amounts reclassified from accumulated other comprehensive income	3			—			3
Balance at March 31, 2013	$	(238	)	$	(6	)	$	(244	)

^a Amounts are net of tax.

Reclassifications out of Accumulated Other Comprehensive Loss
	Three Months Ended March 31,
Details about Accumulated Other Comprehensive Loss Components	2013			Income Statement Line Item
Amortization of defined benefit pension items
Actuarial losses	$	5		b
	5			Total before tax
	(2		)	Tax expense
Total reclassifications for the period	$	3		Net of tax

^b This accumulated other comprehensive loss component is included in the computation of net periodic pension cost (see Note 8 for additional details).

11. Accounting Pronouncements

In February 2013, the FASB issued Accounting Standards Update No. 2013-02 (ASU 2013-02), Comprehensive Income (Topic 220),Reporting Amounts Classified Out of Comprehensive Income. This standard requires issuers to present the effects of reclassifications out of accumulated other comprehensive income on the components of net income and other comprehensive income for all periods presented. This reclassification may be presented either on the face of the financial statements where net income is presented or in the notes. ASU 2013-02 is effective prospectively for the Company for the period beginning on January 1, 2013. The Company has included the appropriate disclosures related to other comprehensive income reclassifications in accordance with ASU 2013-02 in Note 10.

18

Item 2. Management’s Narrative Analysis of Results of Operations.

Management’s narrative analysis relates to the results of operations of BNSF Railway Company and its majority-owned subsidiaries (collectively BNSF Railway, Registrant or Company). The following narrative analysis should be read in conjunction with the Consolidated Financial Statements and the accompanying notes.

The following narrative analysis of results of operations includes a comparative analysis of the three months ended March 31, 2013 and 2012.

Results of Operations

Revenues Summary

The following tables present BNSF Railway’s revenue information by business group:

	Revenues (in millions)				Cars / Units (in thousands)
	Three Months Ended March 31,				Three Months Ended March 31,
	2013		2012		2013	2012
Consumer Products	$	1,661	$	1,533	1,188	1,132
Industrial Products	1,337		1,133		448	392
Coal	1,209		1,240		542	561
Agricultural Products	911		953		244	263
Total Freight Revenues	5,118		4,859		2,422	2,348
Other Revenues	62		67
Total Operating Revenues	$	5,180	$	4,926

	Average Revenue Per Car / Unit
	Three Months Ended March 31,
	2013		2012
Consumer Products	$	1,398	$	1,354
Industrial Products	2,984		2,890
Coal	2,231		2,210
Agricultural Products	3,734		3,624
Total Freight Revenues	$	2,113	$	2,069

Fuel Surcharges

Freight revenues include both revenue for transportation services and fuel surcharges. BNSF Railway’s fuel surcharge program is intended to recover its incremental fuel costs when fuel prices exceed a threshold fuel price. Fuel surcharges are calculated differently depending on the type of commodity transported. BNSF Railway has two standard fuel surcharge programs – Percent of Revenue and Mileage-Based. In addition, in certain commodities, fuel surcharge is calculated using a fuel price from a time period that can be up to 60 days earlier. In a period of volatile fuel prices or changing customer business mix, changes in fuel expense and fuel surcharge may significantly differ.

The following table presents fuel surcharge and fuel expense information (in millions):

	Three Months Ended March 31,
	2013		2012
Total fuel expense a	$	1,122	$	1,095
BNSF Railway fuel surcharges	$	711	$	672

^a  Total fuel expense includes locomotive and non-locomotive fuel.

19

Three Months EndedMarch 31, 2013 vs. the Three Months EndedMarch 31, 2012

Revenues

Revenues for the three months ended March 31, 2013, were $5,180 million, up 5 percent as compared with the three months ended March 31, 2012. The increase in revenues is due to the following changes in underlying trends in revenues:

▪ Average revenue per car / unit increased for all business units as a result of increased rate per car / unit.

In addition to an increase in average revenue per car / unit, the following changes in underlying trends in volumes also impacted the change in revenues:

▪ Consumer Products unit volumes increased primarily due to higher domestic intermodal volumes as a result of highway conversion to rail.

▪ Industrial Products unit volumes increased primarily due to increased shipments of petroleum products.

▪ Coal unit volumes decreased primarily due to a decrease in coal demand as a result of utilities' focus on reducing high stockpiles.

▪ Agricultural Products volumes decreased primarily due to a decrease in corn and soybean exports as a result of the extreme U.S. drought in 2012, partially offset by domestic wheat shipments.

Expenses

Operating expenses for the three months ended March 31, 2013, were $3,712 million, an increase of $36 million, or 1 percent, as compared with the three months ended March 31, 2012. A significant portion of this increase is due to the following changes in underlying trends in expenses:

▪ Compensation and benefits expense increased primarily due to increased unit volumes and inflation, partially offset by initiatives.

▪ Fuel expenses increased due to higher fuel prices and volume, partially offset by improved efficiency.

▪ Purchased services expenses increased primarily due to higher volume-related costs.

▪ There were no significant changes in underlying trends for depreciation and amortization and equipment rents expense.

▪ Materials and other expense decreased primarily due to expense recorded in the prior year for an unfavorable arbitration ruling.

▪ The effective tax rate was 37.6 percent and 36.6 percent for the three months ended March 31, 2013 and 2012, respectively. The 2012 effective tax rate includes favorable state tax credits.

20

Forward-Looking Information

To the extent that statements made by the Company relate to the Company’s future economic performance or business outlook, projections or expectations of financial or operational results, or refer to matters that are not historical facts, such statements are “forward-looking” statements within the meaning of the federal securities laws.

Forward-looking statements involve a number of risks and uncertainties, and actual performance or results may differ materially. For a discussion of material risks and uncertainties that the Company faces, see the discussion in Item 1A, “Risk Factors,” of the Company’s Annual Report on Form 10-K. Important factors that could cause actual results to differ materially include, but are not limited to, the following:

•  Economic and industry conditions: material adverse changes in economic or industry conditions, both in the United States and globally; volatility in the capital or credit markets including changes affecting the timely availability and cost of capital; changes in customer demand, effects of adverse economic conditions affecting shippers or BNSF Railway’s supplier base, and effects due to more stringent regulatory policies such as the regulation of carbon dioxide emissions that could reduce the demand for coal or governmental tariffs or subsidies that could affect the demand for grain, the impact of low natural gas prices on coal demand for electric power plants, changes in environmental laws that could affect the demand for drilling products and products produced by drilling, changes in fuel prices and other key materials, the impact of high barriers of entry for prospective new suppliers and disruptions in supply chains for these materials; competition and consolidation within the transportation industry; and changes in crew availability, labor and benefits costs and labor difficulties, including stoppages affecting either BNSF Railway’s operations or customers’ abilities to deliver goods to BNSF Railway for shipment.

•   Legal, legislative and regulatory factors: developments and changes in laws and regulations, including those affecting train operations or the marketing of services; the ultimate outcome of shipper and rate claims subject to adjudication; claims, investigations or litigation alleging violations of the antitrust laws; increased economic regulation of the rail industry through legislative action and revised rules and standards applied by the U.S. Surface Transportation Board in various areas including rates and services; developments in environmental investigations or proceedings with respect to rail operations or current or past ownership or control of real property or properties owned by others impacted by BNSF Railway operations; losses resulting from claims and litigation relating to personal injuries, asbestos and other occupational diseases; the release of hazardous materials, environmental contamination and damage to property; regulation, restrictions or caps, or other controls of diesel emissions that could affect operations or increase costs; the availability of adequate insurance to cover the risks associated with operations.

•   Operatingfactors: changes in operating conditions and costs; operational and other difficulties in implementing positive train control technology, including increased compliance or operational costs or penalties; restrictions on development and expansion plans due to environmental concerns; disruptions to BNSF Railway’s technology network including computer systems and software, such as cybersecurity intrusions, misappropriation of assets or sensitive information, corruption of data or operations disruptions; as well as natural events such as severe weather, fires, floods and earthquakes or man-made or other disruptions of BNSF Railway’s or other railroads’ operating systems, structures, or equipment including the effects of acts of terrorism on the Company’s system or other railroads’ systems or other links in the transportation chain.

The Company cautions against placing undue reliance on forward-looking statements, which reflect its current beliefs and are based on information currently available to it as of the date a forward-looking statement is made. The Company undertakes no obligation to revise forward-looking statements to reflect future events, changes in circumstances, or changes in beliefs. In the event the Company does update any forward-looking statement, no inference should be made that the Company will make additional updates with respect to that statement, related matters, or any other forward-looking statements.

21

Item 4. Controls and Procedures.

Based on their evaluation as of the end of the period covered by this quarterly report on Form 10-Q, BNSF Railway’s principal executive officer and principal financial officer have concluded that BNSF Railway’s disclosure controls and procedures (as defined in Rules 13a-15(e) and 15d-15(e) of the Securities Exchange Act of 1934) are effective to ensure that information required to be disclosed by BNSF Railway in the reports that it files or submits under the Securities Exchange Act of 1934 is recorded, processed, summarized, and reported within the time periods specified in Securities and Exchange Commission rules and forms and that such information is accumulated and communicated to BNSF Railway’s management, including its principal executive and principal financial officers, as appropriate to allow timely decisions regarding required disclosure. Additionally, as of the end of the period covered by this report, BNSF Railway's principal executive officer and principal financial officer have concluded that there have been no changes in BNSF Railway's internal control over financial reporting that occurred during BNSF Railway’s first fiscal quarter that have materially affected, or are reasonably likely to materially affect, BNSF Railway's internal control over financial reporting.

22

BNSF RAILWAY COMPANY and SUBSIDIARIES

PART II OTHER INFORMATION

Item 6. Exhibits.

See Index to Exhibits on page E-1 for a description of the exhibits filed as part of this report.

23

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.

BNSF Railway Company (Registrant)
By:	/s/    Thomas N. Hund
	Thomas N. Hund Executive Vice President and Chief Financial Officer (On behalf of the Registrant and as principal financial officer)

Date:  May 3, 2013

S-1

BNSF RAILWAY COMPANY and SUBSIDIARIES

Exhibit Index

		Incorporated by Reference (if applicable)
	Exhibit Number and Description	Form	File Date	File No.	Exhibit
3.1	Restated Certificate of Incorporation of BNSF Railway Company, dated January 17, 2005.	10-Q	7/26/2005	001-06324	3.1
3.2	By-Laws of BNSF Railway Company, as amended August 30, 2005.	10-Q	10/25/2005	001-06324	3.1
12.1	Computation of Ratio of Earnings to Fixed Charges.*
31.1	Principal Executive Officer’s Certifications Pursuant to Section 302 of the Sarbanes-Oxley Act of 2002.*
31.2	Principal Financial Officer’s Certifications Pursuant to Section 302 of the Sarbanes-Oxley Act of 2002.*
32.1	Certification Pursuant to 18 U.S.C. § 1350 (Section 906 of the Sarbanes-Oxley Act of 2002).*
101	eXtensible Business Reporting Language (XBRL) documents submitted electronically: 101.INS - XBRL Instance Document 101.SCH - XBRL Taxonomy Extension Schema Document 101.CAL - XBRL Extension Calculation Linkable Document 101.DEF - XBRL Taxonomy Extension Definition Linkable Document 101.LAB - XBRL Taxonomy Extension Label Linkbase 101.PRE - XBRL Taxonomy Extension Presentation Linkbase Document
	The following unaudited information from the BNSF Railway Company's Form 10-Q for the three months ended March 31, 2013, formatted in XBRL includes: (i) the Consolidated Statements of Income for the three months ended March 31, 2013 and 2012, (ii) the Consolidated Statements of Comprehensive Income for the three months ended March 31, 2013 and 2012 (iii) the Consolidated Balance Sheets as of March 31, 2013 and December 31, 2012, (iv) the Consolidated Statements of Cash Flow for the three months ended March 31, 2013 and 2012, (v) the Consolidated Statements of Changes in Equity as of March 31, 2013, and (vi) the Notes to the Consolidated Financial Statements. *

__________________

*Filed herewith

E-1

EX-12.1

Exhibit 12.1

BNSF RAILWAY COMPANY and SUBSIDIARIES

COMPUTATION OF RATIO OF EARNINGS TO FIXED CHARGES

(In millions, except ratio amounts)

(Unaudited)

		Three Months Ended March 31,
		2013		2012
Earnings:
Income before income taxes	$	1,462	$	1,245
Add:
Interest and other fixed charges, excluding capitalized interest		24		15
Reasonable approximation of portion of rent under long-term operating           leases representative of an interest factor		47		50
Distributed income of investees accounted for under the equity method		2		2
Less:
Equity in earnings of investments accounted for under the equity method		2		3
Total earnings available for fixed charges	$	1,533	$	1,309
Fixed charges:
Interest and fixed charges	$	31	$	21
Reasonable approximation of portion of rent under long-term operating leases    representative of an interest factor		47		50
Total fixed charges	$	78	$	71
Ratio of earnings to fixed charges		19.65x		18.44x

E-2

EX-31.1

Exhibit 31.1

Principal Executive Officer’s Certifications

Pursuant to Section 302 of the Sarbanes-Oxley Act of 2002

I, Matthew K. Rose, certify that:

1. I have reviewed this quarterly report on Form 10-Q of BNSF Railway Company;

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 covered by this report;

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

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

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

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

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

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

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

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

Date: May 3, 2013

/s/ Matthew K. Rose

Matthew K. Rose

Chairman and

Chief Executive Officer

E-3

EX-31.2

Exhibit 31.2

Principal Financial Officer’s Certifications

Pursuant to Section 302 of the Sarbanes-Oxley Act of 2002

I, Thomas N. Hund, certify that:

1. I have reviewed this quarterly report on Form 10-Q of BNSF Railway Company;

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 covered by this report;

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

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

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

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

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

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

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

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

Date: May 3, 2013

/s/ Thomas N. Hund

Thomas N. Hund

Executive Vice President and

Chief Financial Officer

E-4

EX-32.1

Exhibit 32.1

Certification Pursuant to 18 U.S.C. § 1350

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

BNSF Railway Company

In connection with the Quarterly Report of BNSF Railway Company (the "Company") on Form 10-Q for the period ended March 31, 2013, as filed with the Securities and Exchange Commission on the date hereof (the "Report"), the undersigned, Matthew K. Rose, Chairman and Chief Executive Officer of the Company, and Thomas N. Hund, Executive Vice President and Chief Financial Officer of the Company, each hereby certifies that, to his knowledge on the date hereof:

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

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

Date:  May 3, 2013

/s/ Matthew K. Rose	/s/ Thomas N. Hund
Matthew K. Rose	Thomas N. Hund
Chairman and Chief Executive Officer	Executive Vice President and Chief Financial Officer

A signed original of this written statement required by Section 906 has been provided to BNSF Railway Company and will be retained by BNSF Railway Company and furnished to the Securities and Exchange Commission or its staff upon request.

E-5

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Employment Benefit Plans (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended
	Mar. 31, 2013		Mar. 31, 2012
Net Cost
Amortization of net loss	$ 5	[1]
Discretionary contribution by Company	25
Pension Plans, Defined Benefit
Net Cost
Service cost	12		10
Interest cost	22		25
Expected return on plan assets	(31)		(30)
Amortization of net loss	4		3
Net cost recognized	7		8
Other Postretirement Benefit Plans, Defined Benefit
Net Cost
Interest cost	3		3
Amortization of net loss	1		1
Net cost recognized	$ 4		$ 4

[1] This accumulated other comprehensive loss component is included in the computation of net periodic pension cost (see Note 8 for additional details).

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Debt Fair Value of Debt Instruments (Details) (USD $) In Millions, unless otherwise specified	Mar. 31, 2013	Dec. 31, 2012
Debt Disclosure [Abstract]
Debt, fair value	$ 848	$ 892
Debt, book value	$ 746	$ 778

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Employment Benefit Plans (Tables)

3 Months Ended

Mar. 31, 2013

Pension Plans, Defined Benefit

Defined Benefit Plan Disclosure [Line Items]

Schedule of Net Benefit Costs

Components of the net cost for the periods presented below for certain employee benefit plans were as follows (in millions):

	Pension Benefits
	Three Months Ended March 31,
Net Cost	2013			2012
Service cost	$	12		$	10
Interest cost	22			25
Expected return on plan assets	(31		)	(30		)
Amortization of net loss	4			3
Net cost recognized	$	7		$	8

Other Postretirement Benefit Plans, Defined Benefit

Defined Benefit Plan Disclosure [Line Items]

Schedule of Net Benefit Costs

	Retiree Health and Welfare Benefits
	Three Months Ended March 31,
Net Cost	2013		2012
Interest cost	$	3	$	3
Amortization of net loss	1		1
Net cost recognized	$	4	$	4

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Commitments and Contingencies - Insurance (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended
	Mar. 31, 2013	Mar. 31, 2012	Dec. 31, 2012
Insurance [Line Items]
Expense related to insurance premiums	$ 25	$ 29
Unamortized insurance premiums	42
Insurance claims receivable	21		5
BNSF Insurance Company
Insurance [Line Items]
Insurance coverage premiums	58	82
Insurance claims paid	$ 42	$ 54

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Accounting Policies and Interim Results

3 Months Ended

Mar. 31, 2013

Organization, Consolidation and Presentation of Financial Statements [Abstract]

Accounting Policies and Interim Results

Accounting Policies and Interim Results

The Consolidated Financial Statements should be read in conjunction with BNSF Railway Company’s Annual Report on Form 10-K for the year ended December 31, 2012, including the financial statements and notes thereto. The Consolidated Financial Statements include the accounts of BNSF Railway Company and its majority-owned subsidiaries, all of which are separate legal entities (collectively BNSF Railway or the Company). BNSF Railway is a wholly-owned subsidiary of Burlington Northern Santa Fe, LLC (BNSF), and is the principal operating subsidiary of BNSF. All intercompany accounts and transactions have been eliminated.

On February 12, 2010, Berkshire Hathaway Inc., a Delaware corporation (Berkshire), acquired 100% of the outstanding shares of Burlington Northern Santa Fe Corporation common stock that it did not already own. The acquisition was completed through the merger (the Merger) of Burlington Northern Santa Fe Corporation with and into R Acquisition Company, LLC, a Delaware limited liability company and an indirect wholly-owned subsidiary of Berkshire (Merger Sub), with Merger Sub continuing as the surviving entity. In connection with the Merger, Merger Sub changed its name to “Burlington Northern Santa Fe, LLC” and remains an indirect, wholly-owned subsidiary of Berkshire. Berkshire's cost of acquiring BNSF was pushed-down to establish a new accounting basis for BNSF beginning as of February 13, 2010.

The results of operations for any interim period are not necessarily indicative of the results of operations to be expected for the entire year. In the opinion of management, the unaudited financial statements reflect all adjustments (consisting of only normal recurring adjustments, except as disclosed) necessary for a fair statement of BNSF Railway’s consolidated financial position as of March 31, 2013, and the results of operations for the three months ended March 31, 2013 and 2012.

Certain prior year amounts in the Consolidated Statements of Cash Flows have been reclassified to conform to the current presentation of capital expenditures. The reclassification did not affect the Company's previously reported results of operations or financial position.

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Fuel - Effects of Derivative Instruments Gains and Losses (Details) (Cash Flow Hedging, USD $) In Millions, unless otherwise specified	3 Months Ended
	Mar. 31, 2013		Mar. 31, 2012
Derivative Instruments, Gain (Loss) [Line Items]
Amount of Gain or (Loss) Recognized in Other Comprehensive Income (OCI) on Derivative (Effective Portion)	$ 0		$ 9
Amount of Gain or (Loss) Recognized from AOCL into Income (Effective Portion)	0		21
Amount of Gain or (Loss) Recognized in Income on Derivatives (Ineffective Portion and Amount Excluded from Effectiveness Testing)	0	[1]	(2)	[1]
Fuel Contracts
Derivative Instruments, Gain (Loss) [Line Items]
Amount of Gain or (Loss) Recognized in Other Comprehensive Income (OCI) on Derivative (Effective Portion)	0		9
Fuel Contracts | Fuel Expense
Derivative Instruments, Gain (Loss) [Line Items]
Amount of Gain or (Loss) Recognized from AOCL into Income (Effective Portion)	0		21
Amount of Gain or (Loss) Recognized in Income on Derivatives (Ineffective Portion and Amount Excluded from Effectiveness Testing)	$ 0	[1]	$ (2)	[1]

[1] No portion of the loss was excluded from the assessment of hedge effectiveness for the periods then ended.

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Fuel - Derivative Narrative (Details) (Cost of Fuel, Operating Expense)	3 Months Ended
	Mar. 31, 2013	Mar. 31, 2012
Cost of Fuel | Operating Expense
Concentration Risk [Line Items]
Fuel costs percent of total operating expenses	30.00%	30.00%

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Accounts Receivable, Net (Details) (USD $) In Millions, unless otherwise specified	Mar. 31, 2013	Dec. 31, 2012
Receivables [Abstract]
Allowance for bill adjustments and uncollectible accounts	$ 49	$ 48
Accounts receivable greater than 90 days old	$ 30	$ 35

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Other Intangible Assets and Liablities (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended
	Mar. 31, 2013	Mar. 31, 2012	Dec. 31, 2012
Finite-Lived Intangible Assets, Amortization Expense, Maturity Schedule [Abstract]
Amortized intangible assets, gross carrying amount	$ 2,013		$ 2,013
Amortized intangible assets, accumulated amortization	975		899
Amortized intangible liabilities, gross carrying amount	2,056		2,056
Amortized intangible liabilities, accumulated amortization	905		842
Amortization of intangible assets	76	77
Amortization of intangible liabilities	63	70
Finite-Lived Intangible Assets, Net, Amortization Expense, Fiscal Year Maturity [Abstract]
Amortization of intangible assets, Remainder of 2013	230
Amortization of intangible liabilities, Remainder of 2013	189
Amortization of intangible assets, 2014	306
Amortization of intangible liabilities, 2014	179
Amortization of intangible assets, 2015	54
Amortization of intangible liabilities, 2015	115
Amortization of intangible assets, 2016	31
Amortization of intangible liabilities, 2016	101
Amortization of intangible assets, 2017	31
Amortization of intangible liabilities, 2017	$ 96

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Consolidated Statements of Changes in Stockholders' Equity (USD $) In Millions, unless otherwise specified	Total	Common Stock and Paid-in Capital	Retained Earnings	InterCompany Notes Receivable	Accumulated Other Comprehensive Loss
Balance at Dec. 31, 2012	$ 45,625	$ 42,920	$ 9,375	$ (6,425)	$ (245)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Change in intercompany notes receivable	(189)			(189)
Comprehensive income, net of tax	913	0	912	0	1
Balance at Mar. 31, 2013	$ 46,349	$ 42,920	$ 10,287	$ (6,614)	$ (244)

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Other Assets (Details) (USD $) In Millions, unless otherwise specified	1 Months Ended
	Jul. 31, 2010	Mar. 31, 2013
Variable Interest Entity [Line Items]
Assets of unconsolidated Partnership		$ 465
Variable Interest Entity, Not Primary Beneficiary
Variable Interest Entity [Line Items]
Company limited partner holding interest, percentage	99.90%
Unamortized investment balance classified as Other Assets		422
Remaining commitments classified as Other Liabilities		18
Maximum exposure to loss		422
Remaining commitments due at the end of 2013		$ 18
Variable Interest Entity, Primary Beneficiary
Variable Interest Entity [Line Items]
General partner holding interest, percentage	0.10%

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Related Party Transactions (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended
	Mar. 31, 2013	Mar. 31, 2012	Dec. 31, 2012
Related Party Transaction [Line Items]
Intercompany notes receivable	$ 6,614		$ 6,425
Change in intercompany notes receivable	189	(24)
Parent Company
Related Party Transaction [Line Items]
Federal and state income payments, net of refunds	642	273
Intercompany notes receivable	6,614		6,425
Change in intercompany notes receivable	189
Origination of Notes Receivable from Related Parties	574
Repayments received on intercompany notes receivable	385
Affiliated Entity
Related Party Transaction [Line Items]
Intercompany receivables	367		32
Intercompany payables	46		109
Berkshire and its subsidiaries
Related Party Transaction [Line Items]
Revenues from Related Parties	38	10
Related Party Transaction Expenditures From Transactions With Berkshire and its subsidiaries	6	4
BNSF Logistics
Related Party Transaction [Line Items]
Revenues from Related Parties	10	10
Purchased truck transportation services	$ 9	$ 8
Effective Federal Funds Rate [Member] | Parent Company
Related Party Transaction [Line Items]
Intercompany notes variable interest rate	1.00%

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Consolidated Statements of Income (USD $) In Millions, unless otherwise specified	3 Months Ended
	Mar. 31, 2013	Mar. 31, 2012
Revenues	$ 5,180	$ 4,926
Operating expenses:
Compensation and benefits	1,129	1,110
Fuel	1,122	1,095
Purchased services	543	522
Depreciation and amortization	483	462
Equipment rents	198	202
Materials and other	237	285
Total operating expenses	3,712	3,676
Operating income	1,468	1,250
Interest expense	24	15
Interest income, related parties	(19)	(12)
Other expense, net	1	2
Income before income taxes	1,462	1,245
Income tax expense	550	456
Net income	$ 912	$ 789

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Consolidated Balance Sheets (Unaudited) (Parenthetical) (USD $) In Millions, except Share data, unless otherwise specified	Mar. 31, 2013	Dec. 31, 2012
Accumulated depreciation	$ 1,717	$ 1,623
Stockholders' Equity:
Common stock, par value (in dollars per share)	$ 1	$ 1
Common stock, shares authorized (in shares)	1,000	1,000
Common stock, shares issued (in shares)	1,000	1,000
Common stock, shares outstanding (in shares)	1,000	1,000

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Debt Variable Interest Entities - Leases (Details) (Variable Interest Entity, Not Primary Beneficiary, Reporting Entity [Member], Equipment [Member], USD $) In Billions, unless otherwise specified	Mar. 31, 2013
Variable Interest Entity, Not Primary Beneficiary | Reporting Entity [Member] | Equipment [Member]
Operating Leased Assets [Line Items]
Future minimum lease payments	$ 4

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Other Assets (Tables)

3 Months Ended

Mar. 31, 2013

Organization, Consolidation and Presentation of Financial Statements [Abstract]

Schedule of Variable Interest Entities

The following table provides information as of March 31, 2013 (in millions):

Unamortized investment balance classified as Other Assets		Remaining commitments classified as Other Liabilities		Maximum exposure to loss
$	422	$	18	$	422

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Commitments and Contingencies - Personal Injury (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended
	Mar. 31, 2013	Mar. 31, 2012
Unasserted Claim
Asbestos and Personal Injury [Abstract]
Percent of future unasserted asbestos claims to be filed within the next ten years	60.00%
Percent of future unasserted asbestos claims to be filed within the next fifteen years	80.00%
Percent of future unasserted asbestos claims to be filed within the next twenty-five years	95.00%
Length in years for 60 percent of future unasserted asbestos claims to be filed	10 years
Length in years for 80 percent of future unasserted asbestos claims to be filed	15 years
Length in years for 95 percent of future unasserted claims to be filed	25 years
Personal Injury
Asbestos and Personal Injury [Abstract]
Future costs to settle personal injury claims, minimum	$ 405
Future costs to settle personal injury claims, maximum	520
Loss Contingency Accrual [Roll Forward]
Beginning balance	462	540
Accruals	26	23
Payments	(35)	(57)
Ending balance	453	506
Current Liabilities
Asbestos and Personal Injury [Abstract]
Accrued obligations for asbestos and other personal injury matters, current liabilities	$ 95

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Commitments and Contingencies (Tables)

3 Months Ended

Mar. 31, 2013

Commitments and Contingencies Disclosure [Abstract]

Schedule of Loss Contingencies by Contingency

The following table summarizes the activity in the Company’s accrued obligations for asbestos and other personal injury matters (in millions):

	Three Months Ended March 31,
	2013			2012
Beginning balance	$	462		$	540
Accruals	26			23
Payments	(35		)	(57		)
Ending balance	$	453		$	506

Accrual for Environmental Loss Contingencies

The following table summarizes the activity in the Company’s accrued obligations for environmental matters (in millions):

	Three Months Ended March 31,
	2013			2012
Beginning balance	$	458		$	570
Accruals	—			3
Payments	(8		)	(15		)
Ending balance	$	450		$	558

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Consolidated Statements of Cash Flows (USD $) In Millions, unless otherwise specified	3 Months Ended
	Mar. 31, 2013	Mar. 31, 2012
Net income	$ 912	$ 789
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization	483	462
Deferred income taxes	156	143
Long-term casualty and environmental liabilities, net	(17)	(46)
Contribution to defined pension plan	(25)	(36)
Other, net	(10)	0
Changes in current assets and liabilities:
Accounts receivable, net	(417)	16
Materials and supplies	(38)	(97)
Other current assets	(101)	(97)
Accounts payable and other current liabilities	(245)	(140)
Net cash provided by operating activities	698	994
INVESTING ACTIVITIES
Capital expenditures excluding equipment	(546)	(528)
Acquisition of equipment	(186)	(298)
Other, net	(20)	(130)
Net cash used for investing activities	(752)	(956)
FINANCING ACTIVITIES
Payments on long-term debt	(58)	(46)
Net (increase) decrease in intercompany notes receivable classified as equity	(189)	24
Other, net	0	1
Net cash used for financing activities	(247)	(21)
Decrease (Increase) in cash and cash equivalents	(301)	17
Cash and cash equivalents:
Beginning of period	350	293
End of period	49	310
SUPPLEMENTAL CASH FLOW INFORMATION
Interest paid, net of amounts capitalized	33	30
Capital investments accrued but not yet paid	104	118
Income taxes paid, net of refunds	$ 648	$ 273

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Consolidated Statements of Comprehensive Income (USD $) In Millions, unless otherwise specified	3 Months Ended
	Mar. 31, 2013	Mar. 31, 2012
Net income	$ 912	$ 789
Other comprehensive income:
Change in amortization of accumulated actuarial losses, net of tax expense of $2 million and $2 million, respectively	3	2
Change in fuel hedge mark-to-market, net of tax benefit of $0 million and $4 million, respectively	0	(8)
Change in accumulated other comprehensive income of equity method investees	(2)	(2)
Other comprehensive income (loss), net of tax	1	(8)
Total comprehensive income	$ 913	$ 781

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Related Party Transactions

3 Months Ended

Mar. 31, 2013

Related Party Transactions [Abstract]

Related Party Transactions

Related Party Transactions

BNSF Railway is involved with BNSF and certain of its subsidiaries in related party transactions in the ordinary course of business, which include payments made on each other’s behalf and performance of services. Under the terms of a tax allocation agreement with BNSF, BNSF Railway made federal and state income tax payments, net of refunds, of $642 million and $273 million during the three months ended March 31, 2013 and 2012, respectively, which are reflected in changes in working capital in the Consolidated Statement of Cash Flows.

At March 31, 2013 and December 31, 2012, BNSF Railway had $367 million and $32 million, respectively, of intercompany receivables which are reflected in accounts receivable in the respective Consolidated Balance Sheets. At March 31, 2013 and December 31, 2012, BNSF Railway had $46 million and $109 million of intercompany payables, respectively, which are reflected in accounts payable in the respective Consolidated Balance Sheets. Net intercompany balances are settled in the ordinary course of business.

At March 31, 2013 and December 31, 2012, BNSF Railway had $6,614 million and $6,425 million, respectively, of intercompany notes receivable from BNSF. The $189 millionincrease in intercompany notes receivable was due to loans to BNSF of $574 million, partially offset by repayments received of $385 million during the three months ended March 31, 2013. All intercompany notes have a variable interest rate of 1.0 percent above the monthly average of the daily effective Federal Funds rate. Interest is collected semi-annually on all intercompany notes receivable. Interest income from intercompany notes receivable is presented in interest income, related parties in the Consolidated Statements of Income.

BNSF Railway earned revenues of $10 million during the both three months ended March 31, 2013 and 2012, for transportation services provided to BNSF Logistics, LLC, a wholly-owned, third-party logistics company, by BNSF Railway. Additionally, BNSF Railway purchased truck transportation services for the Company’s materials and supplies from BNSF Logistics of $9 million and $8 million during the three months ended March 31, 2013 and 2012, respectively, which were classified as purchased services in the Consolidated Statements of Income.

BNSF Railway engages in various arm's-length transactions with other affiliates in the ordinary course of business. BNSF Railway earned revenues for services provided to affiliates of $38 million and $10 million during the three months ended March 31, 2013 and 2012, respectively. Expenditures to affiliates totaled $6 million and $4 million during the three months ended March 31, 2013 and 2012, respectively.

Under various stock incentive plans, Berkshire (post-Merger) or BNSF (pre-Merger) granted options to BNSF Railway employees to purchase its common stock at a price not less than the fair market value at the date of grant. Certain employees of BNSF Railway also participated in other long-term incentive plans that utilized restricted shares/units.

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Document and Entity Information	3 Months Ended
	Mar. 31, 2013	May 03, 2013
Entity Information [Line Items]
Entity Registrant Name	BNSF RAILWAY CO
Entity Central Index Key	0000015511
Document Type	10-Q
Document Period End Date	Mar. 31, 2013
Amendment Flag	false
Document Fiscal Year Focus	2013
Document Fiscal Period Focus	Q1
Current Fiscal Year End Date	--12-31
Entity Well-known Seasoned Issuer	No
Entity Voluntary Filers	No
Entity Current Reporting Status	Yes
Entity Filer Category	Non-accelerated Filer
Entity Common Stock, Shares Outstanding		1,000

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Comprehensive Income

3 Months Ended

Mar. 31, 2013

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

Comprehensive Income

Comprehensive Income

Other comprehensive income refers to revenues, expenses, gains and losses that under generally accepted accounting principles are included in comprehensive income, a component of Stockholder’s Equity within the Consolidated Balance Sheets, rather than net income on the Consolidated Statements of Income. Under existing accounting standards, other comprehensive income may include, among other things, unrecognized gains and losses and prior service credit related to pension and other postretirement benefit plans and accounting for derivative financial instruments, which qualify for cash flow hedge accounting.

The following table provides the components of accumulated other comprehensive loss by component (in millions):

	Defined Benefit Pension Itemsa			Equity Method Investments			Total
Balance at December 31, 2012	$	(241	)	$	(4	)	$	(245	)
Other comprehensive income before reclassifications	—			(2		)	(2		)
Amounts reclassified from accumulated other comprehensive income	3			—			3
Balance at March 31, 2013	$	(238	)	$	(6	)	$	(244	)

^a Amounts are net of tax.

Reclassifications out of Accumulated Other Comprehensive Loss
	Three Months Ended March 31,
Details about Accumulated Other Comprehensive Loss Components	2013			Income Statement Line Item
Amortization of defined benefit pension items
Actuarial losses	$	5		b
	5			Total before tax
	(2		)	Tax expense
Total reclassifications for the period	$	3		Net of tax

^b This accumulated other comprehensive loss component is included in the computation of net periodic pension cost (see Note 8 for additional details).

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Consolidated Statements of Comprehensive Income (Unaudited) (Parentheticals) (USD $) In Millions, unless otherwise specified	3 Months Ended
	Mar. 31, 2013	Mar. 31, 2012
Change in amortization of accumulated actuarial losses tax benefit (expense)	$ 2	$ 2
Change in fuel hedge mark-to-market, tax expense/(benefit)	$ 0	$ (4)

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Other Intangible Assets and Liablities

3 Months Ended

Mar. 31, 2013

Finite-Lived Intangible Assets, Amortization Expense, Maturity Schedule [Abstract]

Other Intangible Assets and Liabilities

Other Intangible Assets and Liabilities

Amortized intangible assets and liabilities were as follows (in millions):

	As of March 31, 2013				As of December 31, 2012
	Gross Carrying Amount		Accumulated Amortization		Gross Carrying Amount		Accumulated Amortization
Amortized intangible assets	$	2,013	$	975	$	2,013	$	899
Amortized intangible liabilities	$	2,056	$	905	$	2,056	$	842

Amortized intangible assets primarily consisted of internally developed software and franchise and customer assets. Amortized intangible liabilities primarily consisted of customer and shortline contracts which were in an unfavorable position at the date of Merger.

Amortized intangible assets and liabilities are amortized based on the estimated pattern in which the economic benefits are expected to be consumed or on a straight-line basis over their estimated economic lives.

Amortization of intangible assets and liabilities was as follows (in millions):

	Three Months Ended March 31,
	2013		2012
Amortization of intangible assets	$	76	$	77
Amortization of intangible liabilities	$	63	$	70

Amortization of intangible assets and liabilities for the next five years is expected to approximate the following (in millions):

	Amortization of intangible assets		Amortization of intangible liabilities
Remainder of 2013	$	230	$	189
2014	$	306	$	179
2015	$	54	$	115
2016	$	31	$	101
2017	$	31	$	96

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Accounts Receivable, Net

3 Months Ended

Mar. 31, 2013

Receivables [Abstract]

Accounts Receivable, Net

Accounts Receivable, Net

Accounts receivable, net consists of freight and other receivables, reduced by an allowance for bill adjustments and uncollectible accounts, based upon expected collectibility. At March 31, 2013, and December 31, 2012, $49 million and $48 million, respectively, of such allowances had been recorded.

At March 31, 2013 and December 31, 2012, $30 million and $35 million, respectively, of accounts receivable were greater than 90 days old.

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Debt (Tables)

3 Months Ended

Mar. 31, 2013

Debt Disclosure [Abstract]

Schedule of Guarantor Obligations

Debt and other obligations of non-consolidated entities guaranteed by the Company as of March 31, 2013, were as follows (dollars in millions):

	Guarantees
	BNSF Railway Ownership Percentage		Principal Amount Guaranteed		Maximum Future Payments		Maximum Recourse Amounta		Remaining Term (in years)	Capitalized Obligations
Kinder Morgan Energy Partners, L.P.	0.5	%	$	190	$	190	$	—	Termination of Ownership	$	2	b
Chevron Phillips Chemical Company LP	—	%	N/Ad		N/Ad		N/Ad		4	$	7	c
All other	—	%	$	9	$	14	$	—	Various	$	—

^a  Reflects the maximum amount the Company could recover from a third party other than the counterparty.

^b  Reflects capitalized obligations that are recorded on the Company’s Consolidated Balance Sheet.

^c  Reflects the asset and corresponding liability for the fair value of these guarantees required by authoritative accounting guidance related to guarantees.

^d  There is no cap to the liability that can be sought from BNSF Railway for BNSF Railway’s negligence or the negligence of the indemnified party. However, BNSF Railway could receive reimbursement from certain insurance policies if the liability exceeds a certain amount.

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Accounting Pronouncements

3 Months Ended

Mar. 31, 2013

New Accounting Pronouncements and Changes in Accounting Principles [Abstract]

Accounting Pronouncements

Accounting Pronouncements

In February 2013, the FASB issued Accounting Standards Update No. 2013-02 (ASU 2013-02), Comprehensive Income (Topic 220),Reporting Amounts Classified Out of Comprehensive Income. This standard requires issuers to present the effects of reclassifications out of accumulated other comprehensive income on the components of net income and other comprehensive income for all periods presented. This reclassification may be presented either on the face of the financial statements where net income is presented or in the notes. ASU 2013-02 is effective prospectively for the Company for the period beginning on January 1, 2013. The Company has included the appropriate disclosures related to other comprehensive income reclassifications in accordance with ASU 2013-02 in Note 10.

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Commitments and Contingencies

3 Months Ended

Mar. 31, 2013

Commitments and Contingencies Disclosure [Abstract]

Commitments and Contingencies

Commitments and Contingencies

Personal Injury

Personal injury claims, including asbestos claims and employee work-related injuries and third-party injuries (collectively, other personal injury), are a significant expense for the railroad industry. Personal injury claims by BNSF Railway employees are subject to the provisions of the Federal Employers’ Liability Act (FELA) rather than state workers’ compensation laws. FELA’s system of requiring the finding of fault, coupled with unscheduled awards and reliance on the jury system, contributed to increased expenses in past years. Other proceedings include claims by non-employees for punitive as well as compensatory damages. A few proceedings purport to be class actions. The variability present in settling these claims, including non-employee personal injury and matters in which punitive damages are alleged, could result in increased expenses in future years. BNSF Railway has implemented a number of safety programs designed to reduce the number of personal injuries as well as the associated claims and personal injury expense.

Other than the fair value adjustments recorded in the application of acquisition method accounting related to the Merger, as discussed in Note 1 to the Consolidated Financial Statements, BNSF Railway records an undiscounted liability for personal injury claims when the expected loss is both probable and reasonably estimable. The liability and ultimate expense projections are estimated using standard actuarial methodologies. Liabilities recorded for unasserted personal injury claims are based on information currently available. Due to the inherent uncertainty involved in projecting future events such as the number of claims filed each year, developments in judicial and legislative standards and the average costs to settle projected claims, actual costs may differ from amounts recorded. BNSF Railway has obtained insurance coverage for certain claims, as discussed under the heading “BNSF Insurance Company.” Expense accruals and any required adjustments are classified as materials and other in the Consolidated Statements of Income.

Asbestos

The Company is party to a number of personal injury claims by employees and non-employees who may have been exposed to asbestos. The heaviest exposure for BNSF Railway employees was due to work conducted in and around the use of steam locomotive engines that were phased out between the years of 1950 and 1967. However, other types of exposures, including exposure from locomotive component parts and building materials, continued after 1967 until they were substantially eliminated at BNSF Railway by 1985.

BNSF Railway assesses its unasserted asbestos liability exposure on an annual basis during the third quarter. BNSF Railway determines its asbestos liability by estimating its exposed population, the number of claims likely to be filed, the number of claims that will likely require payment and the estimated cost per claim. Estimated filing and dismissal rates and average cost per claim are determined utilizing recent claim data and trends.

Throughout the year, BNSF Railway monitors actual experience against the number of forecasted claims and expected claim payments and will record adjustments to the Company’s estimates as necessary.

Based on BNSF Railway’s estimate of the potentially exposed employees and related mortality assumptions, it is anticipated that unasserted asbestos claims will continue to be filed through the year 2050. The Company recorded an amount for the full estimated filing period through 2050 because it had a relatively finite exposed population (former and current employees hired prior to 1985), which it was able to identify and reasonably estimate and about which it had obtained reliable demographic data (including age, hire date and occupation) derived from industry or BNSF Railway specific data that was the basis for the study. BNSF Railway projects that approximately 60, 80 and 95 percent of the future unasserted asbestos claims will be filed within the next 10, 15 and 25 years, respectively.

Other Personal Injury

BNSF Railway estimates its other personal injury liability claims and expense quarterly based on the covered population, activity levels and trends in frequency and the costs of covered injuries. Estimates include unasserted claims except for certain repetitive stress and other occupational trauma claims that allegedly result from prolonged repeated events or exposure. Such claims are estimated on an as-reported basis because the Company cannot estimate the range of reasonably possible loss due to other non-work related contributing causes of such injuries and the fact that continued exposure is required for the potential injury to manifest itself as a claim. BNSF Railway has not experienced any significant adverse trends related to these types of claims in recent years.

BNSF Railway monitors quarterly actual experience against the number of forecasted claims to be received, the forecasted number of claims closing with payment and expected claim payments. Adjustments to the Company’s estimates are recorded quarterly as necessary or more frequently as new events or revised estimates develop.

The following table summarizes the activity in the Company’s accrued obligations for asbestos and other personal injury matters (in millions):

	Three Months Ended March 31,
	2013			2012
Beginning balance	$	462		$	540
Accruals	26			23
Payments	(35		)	(57		)
Ending balance	$	453		$	506

At March 31, 2013, $95 million was included in current liabilities. In addition, defense and processing costs, which are recorded on an as-reported basis, were not included in the recorded liability. The Company is primarily self-insured for personal injury claims.

Because of the uncertainty surrounding the ultimate outcome of personal injury claims, it is reasonably possible that future costs to settle personal injury claims may range from approximately $405 million to $520 million. However, BNSF Railway believes that the $453 million recorded at March 31, 2013, is the best estimate of the Company’s future obligation for the settlement of personal injury claims.

The amounts recorded by BNSF Railway for personal injury liabilities were based upon currently known facts. Future events, such as the number of new claims to be filed each year, the average cost of disposing of claims, as well as the numerous uncertainties surrounding personal injury litigation in the United States, could cause the actual costs to be higher or lower than projected.

Although the final outcome of personal injury matters cannot be predicted with certainty, considering among other things the meritorious legal defenses available and liabilities that have been recorded, it is the opinion of BNSF Railway that none of these items, when finally resolved, will have a material adverse effect on the Company’s financial position or liquidity. However, the occurrence of a number of these items in the same period could have a material adverse effect on the results of operations in a particular quarter or fiscal year.

BNSF Insurance Company

Burlington Northern Santa Fe Insurance Company, Ltd. (BNSF IC), a wholly-owned subsidiary of BNSF, provides insurance coverage for certain risks, FELA claims, railroad protective and force account insurance claims and certain excess general liability and property coverage, and certain other claims which are subject to reinsurance. During the three months ended March 31, 2013 and 2012, BNSF IC wrote insurance coverage with premiums totaling $58 million and $82 million, respectively, for BNSF Railway, net of reimbursements from third parties. During this same time, BNSF Railway recognized $25 million and $29 million, respectively, in expense related to those premiums, which is classified as purchased services in the Consolidated Statements of Income. At March 31, 2013, unamortized premiums remaining on the Consolidated Balance Sheet were $42 million. During the three months ended March 31, 2013 and 2012, BNSF IC made claim payments totaling $42 million and $54 million, respectively, for settlement of covered claims. At March 31, 2013 and December 31, 2012, claims receivables from BNSF IC were $21 million and $5 million, respectively.

Environmental

The Company’s operations, as well as those of its competitors, are subject to extensive federal, state and local environmental regulation. BNSF Railway’s operating procedures include practices to protect the environment from the risks inherent in railroad operations, which frequently involve transporting chemicals and other hazardous materials. Additionally, many of BNSF Railway’s land holdings are and have been used for industrial or transportation-related purposes or leased to commercial or industrial companies whose activities may have resulted in discharges onto the property. As a result, BNSF Railway is subject to environmental cleanup and enforcement actions. In particular, the federal Comprehensive Environmental Response, Compensation and Liability Act of 1980 (CERCLA), also known as the Superfund law, as well as similar state laws, generally impose joint and several liability for cleanup and enforcement costs on current and former owners and operators of a site without regard to fault or the legality of the original conduct. BNSF Railway has been notified that it is a potentially responsible party (PRP) for study and cleanup costs at Superfund sites for which investigation and remediation payments are or will be made or are yet to be determined (the Superfund sites) and, in many instances, is one of several PRPs. In addition, BNSF Railway may be considered a PRP under certain other laws. Accordingly, under CERCLA and other federal and state statutes, BNSF Railway may be held jointly and severally liable for all environmental costs associated with a particular site. If there are other PRPs, BNSF Railway generally participates in the cleanup of these sites through cost-sharing agreements with terms that vary from site to site. Costs are typically allocated based on such factors as relative volumetric contribution of material, the amount of time the site was owned or operated and/or the portion of the total site owned or operated by each PRP.

BNSF Railway is involved in a number of administrative and judicial proceedings and other mandatory cleanup efforts for 246 sites, including 16 Superfund sites, at which it is participating in the study or cleanup, or both, of alleged environmental contamination.

Liabilities for environmental cleanup costs are recorded when BNSF Railway’s liability for environmental cleanup is probable and reasonably estimable. Subsequent adjustments to initial estimates are recorded as necessary based upon additional information developed in subsequent periods. Environmental costs include initial site surveys and environmental studies as well as costs for remediation of sites determined to be contaminated.

BNSF Railway estimates the ultimate cost of cleanup efforts at its known environmental sites on an annual basis during the third quarter. Ultimate cost estimates for environmental sites are based on current estimated percentage to closure ratios, possible remediation workplans and estimates of the costs and likelihood of each possible outcome, historical payment patterns, and benchmark patterns developed from data accumulated from industry and public sources, including the Environmental Protection Agency and other governmental agencies. These factors incorporate into the estimates experience gained from cleanup efforts at other similar sites.

Annual studies do not include: (i) contaminated sites of which the Company is not aware; (ii) additional amounts for third-party tort claims, which arise out of contaminants allegedly migrating from BNSF Railway property, due to a limited number of sites; or (iii) natural resource damage claims. BNSF Railway continues to estimate third-party tort claims on a site by site basis when the liability for such claims is probable and reasonably estimable. BNSF Railway’s recorded liability for third-party tort claims as of March 31, 2013, was $13 million.

On a quarterly basis, BNSF Railway monitors actual experience against the forecasted remediation and related payments made on existing sites and conducts ongoing environmental contingency analyses, which consider a combination of factors including independent consulting reports, site visits, legal reviews and analysis of the likelihood of other PRP's participation in, and their ability to pay for, cleanup. Adjustments to the Company’s estimates will continue to be recorded as necessary based on developments in subsequent periods. Additionally, environmental accruals, which are classified as materials and other in the Consolidated Statements of Income, include amounts for newly identified sites or contaminants, third-party claims and legal fees incurred for defense of third-party claims and recovery efforts.

The following table summarizes the activity in the Company’s accrued obligations for environmental matters (in millions):

	Three Months Ended March 31,
	2013			2012
Beginning balance	$	458		$	570
Accruals	—			3
Payments	(8		)	(15		)
Ending balance	$	450		$	558

At March 31, 2013, $70 million was included in current liabilities.

BNSF Railway’s environmental liabilities are not discounted. BNSF Railway anticipates that the majority of the accrued costs at March 31, 2013, will be paid over the next ten years, and no individual site is considered to be material.

Liabilities recorded for environmental costs represent BNSF Railway’s best estimate of its probable future obligation for the remediation and settlement of these sites and include both asserted and unasserted claims. Although recorded liabilities include BNSF Railway’s best estimate of all probable costs, without reduction for anticipated recoveries from third parties, BNSF Railway’s total cleanup costs at these sites cannot be predicted with certainty due to various factors such as the extent of corrective actions that may be required, evolving environmental laws and regulations, advances in environmental technology, the extent of other parties’ participation in cleanup efforts, developments in ongoing environmental analyses related to sites determined to be contaminated and developments in environmental surveys and studies of contaminated sites.

Because of the uncertainty surrounding these factors, it is reasonably possible that future costs for environmental liabilities may range from approximately $340 million to $620 million. However, BNSF Railway believes that the $450 million recorded at March 31, 2013, is the best estimate of the Company’s future obligation for environmental costs.

Although the final outcome of these environmental matters cannot be predicted with certainty, it is the opinion of BNSF Railway that none of these items, when finally resolved, will have a material adverse effect on the Company’s financial position or liquidity. However, the occurrence of a number of these items in the same period could have a material adverse effect on the results of operations in a particular quarter or fiscal year.

Other Claims and Litigation

In addition to asbestos, other personal injury and environmental matters discussed above, BNSF Railway and its subsidiaries are also parties to a number of other legal actions and claims, governmental proceedings and private civil suits arising in the ordinary course of business, including those related to disputes and complaints involving certain transportation rates and charges. Some of the legal proceedings include claims for punitive as well as compensatory damages, and a few proceedings purport to be class actions. Although the final outcome of these matters cannot be predicted with certainty, considering among other things the meritorious legal defenses available and liabilities that have been recorded along with applicable insurance, BNSF Railway currently believes that none of these items, when finally resolved, will have a material adverse effect on the Company’s financial position or liquidity. However, an unexpected adverse resolution of one or more of these items could have a material adverse effect on the results of operations in a particular quarter or fiscal year.

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Other Assets

3 Months Ended

Mar. 31, 2013

Organization, Consolidation and Presentation of Financial Statements [Abstract]

Other Assets

Other Assets

In July 2010, the Company entered into a low-income housing partnership (the Partnership) as the limited partner, holding a 99.9% interest in the Partnership. The Partnership is a variable interest entity (VIE), with the purpose of developing and operating low-income housing rental properties. Recovery of the Company’s investment is accomplished through the utilization of low-income housing tax credits and the tax benefits of Partnership losses. The general partner, who holds a 0.1% interest in the Partnership, is an unrelated third party and is responsible for controlling and managing the business and financial operation of the Partnership. As the Company does not have the power to direct the activities that most significantly impact the Partnership’s economic performance, the Company is not the primary beneficiary and therefore, does not consolidate the Partnership. As of March 31, 2013, the assets of the unconsolidated Partnership totaled approximately $465 million. The Company does not provide financial support to the Partnership that it was not previously contractually obligated to provide.

The Company has accounted for its investment in the Partnership using the effective yield method. The risk of loss of the Company's investment in the Partnership is considered low as an affiliate of the general partner has provided certain guarantees of tax credits and minimum annual returns. The Company’s maximum exposure to loss related to the Partnership is the unamortized investment balance. The following table provides information as of March 31, 2013 (in millions):

Unamortized investment balance classified as Other Assets		Remaining commitments classified as Other Liabilities		Maximum exposure to loss
$	422	$	18	$	422

The remaining commitment of $18 million is due at the end of 2013.

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Debt

3 Months Ended

Mar. 31, 2013

Debt Disclosure [Abstract]

Debt

Debt

Fair Value of Debt Instruments

At March 31, 2013, and December 31, 2012, the fair value of BNSF Railway's debt, excluding capital leases, was $848 million and $892 million, respectively, while the book value, which also excludes capital leases and the associated unamortized fair value adjustment under acquisition method accounting related to capital leases, was $746 million and $778 million, respectively. The fair value of BNSF Railway's debt is primarily based on market value price models using observable market-based data for the same or similar issues, or on the estimated rates that would be offered to BNSF Railway for debt of the same remaining maturities (Level 2 inputs). The fair value of the Company's cash equivalents approximates its carrying value due to the short-term maturities of these instruments.

Guarantees

As of March 31, 2013, BNSF Railway has not been called upon to perform under the guarantees specifically disclosed in this footnote and does not anticipate a significant performance risk in the foreseeable future.

Debt and other obligations of non-consolidated entities guaranteed by the Company as of March 31, 2013, were as follows (dollars in millions):

	Guarantees
	BNSF Railway Ownership Percentage		Principal Amount Guaranteed		Maximum Future Payments		Maximum Recourse Amounta		Remaining Term (in years)	Capitalized Obligations
Kinder Morgan Energy Partners, L.P.	0.5	%	$	190	$	190	$	—	Termination of Ownership	$	2	b
Chevron Phillips Chemical Company LP	—	%	N/Ad		N/Ad		N/Ad		4	$	7	c
All other	—	%	$	9	$	14	$	—	Various	$	—

^a  Reflects the maximum amount the Company could recover from a third party other than the counterparty.

^b  Reflects capitalized obligations that are recorded on the Company’s Consolidated Balance Sheet.

^c  Reflects the asset and corresponding liability for the fair value of these guarantees required by authoritative accounting guidance related to guarantees.

^d  There is no cap to the liability that can be sought from BNSF Railway for BNSF Railway’s negligence or the negligence of the indemnified party. However, BNSF Railway could receive reimbursement from certain insurance policies if the liability exceeds a certain amount.

Kinder Morgan Energy Partners, L.P.

Santa Fe Pacific Pipelines, Inc., an indirect, wholly-owned subsidiary of BNSF Railway, has a guarantee in connection with its remaining special limited partnership interest in Santa Fe Pacific Pipeline Partners, L.P. (SFPP), a subsidiary of Kinder Morgan Energy Partners, L.P., to be paid only upon default by the partnership. All obligations with respect to the guarantee will cease upon termination of ownership rights, which would occur upon a put notice issued by BNSF Railway or the exercise of the call rights by the general partners of SFPP.

Chevron Phillips Chemical Company LP

In the third quarter of 2007, BNSF Railway entered into an indemnity agreement with Chevron Phillips Chemical Company LP (Chevron Phillips), granting certain rights of indemnity from BNSF Railway, in order to facilitate access to a new storage facility. Under certain circumstances, payment under this obligation may be required in the event Chevron Phillips were to incur certain liabilities or other incremental costs resulting from trackage access.

All Other

As of March 31, 2013, BNSF Railway guaranteed $9 million of debt. These guarantees expire between 2013 and 2026.

Indemnities

In the ordinary course of business, BNSF Railway enters into agreements with third parties that include indemnification clauses. The Company believes that these clauses are generally customary for the types of agreements in which they are included. At times, these clauses may involve indemnification for the acts of the Company, its employees and agents, indemnification for another party’s acts, indemnification for future events, indemnification based upon a certain standard of performance, indemnification for liabilities arising out of the Company’s use of leased equipment or other property, or other types of indemnification. Despite the uncertainty whether events which would trigger the indemnification obligations would ever occur, the Company does not believe that these indemnity agreements will have a material adverse effect on the Company’s results of operations, financial position or liquidity. Additionally, the Company believes that, due to lack of historical payment experience, the fair value of indemnities cannot be estimated with any amount of certainty. However, the fair value of any such amount would be immaterial to the Consolidated Financial Statements. Agreements that reflect unique circumstances, particularly agreements that contain guarantees that indemnify for another party’s acts, are disclosed separately, if appropriate. Unless separately disclosed above, no fair value liability related to indemnities has been recorded in the Consolidated Financial Statements.

Variable Interest Entities - Leases

BNSF Railway has entered into various equipment lease transactions in which the structure of the lease contains VIEs. These VIEs were created solely for the lease transactions and have no other activities, assets or liabilities outside of the lease transactions. In some of the arrangements, BNSF Railway has the option to purchase some or all of the equipment at a fixed-price, thereby creating variable interests for BNSF Railway in the VIEs. The future minimum lease payments associated with the VIE leases were approximately $4 billion as of March 31, 2013.

In the event the leased equipment is destroyed, BNSF Railway is obligated to either replace the equipment or pay a fixed loss amount. The inclusion of the fixed loss amount is a standard clause within equipment lease arrangements. Historically, BNSF Railway has not incurred significant losses related to this clause. As such, it is not anticipated that the maximum exposure to loss would materially differ from the future minimum lease payments.

BNSF Railway does not provide financial support to the VIEs that it was not previously contractually obligated to provide.

BNSF Railway maintains and operates the equipment based on contractual obligations within the lease arrangements, which set specific guidelines consistent within the industry. As such, BNSF Railway has no control over activities that could materially impact the fair value of the leased equipment. BNSF Railway does not hold the power to direct the activities of the VIEs and therefore does not control the ongoing activities that have a significant impact on the economic performance of the VIEs. Additionally, BNSF Railway does not have the obligation to absorb losses of the VIEs or the right to receive benefits of the VIEs that could potentially be significant to the VIEs. Depending on market conditions, the fixed-price purchase options could potentially provide benefit to the Company; however, any benefits potentially received from a fixed-price purchase option are expected to be minimal. Based on these factors, BNSF Railway is not the primary beneficiary of the VIEs. As BNSF Railway is not the primary beneficiary and the VIE leases are classified as operating leases, there are no assets or liabilities related to the VIEs recorded in the Company's Consolidated Balance Sheet.

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Employment Benefit Plans

3 Months Ended

Mar. 31, 2013

Compensation and Retirement Disclosure [Abstract]

Employment Benefit Plans

Employment Benefit Plans

Components of the net cost for the periods presented below for certain employee benefit plans were as follows (in millions):

	Pension Benefits
	Three Months Ended March 31,
Net Cost	2013			2012
Service cost	$	12		$	10
Interest cost	22			25
Expected return on plan assets	(31		)	(30		)
Amortization of net loss	4			3
Net cost recognized	$	7		$	8

	Retiree Health and Welfare Benefits
	Three Months Ended March 31,
Net Cost	2013		2012
Interest cost	$	3	$	3
Amortization of net loss	1		1
Net cost recognized	$	4	$	4

The Company is not required to make contributions to the BNSF Retirement Plan in 2013; however, the Company made a discretionary contribution of $25 million in March 2013.

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Debt Guarantees (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended
	Mar. 31, 2013
Kinder Morgan Energy Partners, L.P. | Payment Guarantee
Guarantor Obligations [Line Items]
BNSF Railway Ownership Percentage	0.50%
Principal Amount Guaranteed	$ 190
Maximum Future Payments	190
Maximum Recourse Amount	0	[1]
Capitalized Obligations	2	[2]
Chevron Phillips Chemical Company, LP | Indemnification Agreement
Guarantor Obligations [Line Items]
BNSF Railway Ownership Percentage	0.00%
Remaining Term (in years)	4 years
Capitalized Obligations	7	[3]
All Other Guarantee Entities | Payment Guarantee
Guarantor Obligations [Line Items]
BNSF Railway Ownership Percentage	0.00%
Principal Amount Guaranteed	9
Maximum Future Payments	14
Maximum Recourse Amount	0	[1]
Capitalized Obligations	$ 0

[1] Reflects the maximum amount the Company could recover from a third party other than the counterparty.

[2] Reflects capitalized obligations that are recorded on the Company’s Consolidated Balance Sheet.

[3] Reflects the asset and corresponding liability for the fair value of these guarantees required by authoritative accounting guidance related to guarantees.

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Other Intangible Assets and Liablities (Tables)

3 Months Ended

Mar. 31, 2013

Finite-Lived Intangible Assets, Amortization Expense, Maturity Schedule [Abstract]

Schedule of Finite-Lived Intangible Assets and Liabilities

Amortized intangible assets and liabilities were as follows (in millions):

	As of March 31, 2013				As of December 31, 2012
	Gross Carrying Amount		Accumulated Amortization		Gross Carrying Amount		Accumulated Amortization
Amortized intangible assets	$	2,013	$	975	$	2,013	$	899
Amortized intangible liabilities	$	2,056	$	905	$	2,056	$	842

Schedule of Finite-Lived Intangible Assets and Liabilities Amortization Expense

Amortization of intangible assets and liabilities was as follows (in millions):

	Three Months Ended March 31,
	2013		2012
Amortization of intangible assets	$	76	$	77
Amortization of intangible liabilities	$	63	$	70

Schedule of Finite-Lived Intangible Assets and Liabilities, Future Amortization Expense

Amortization of intangible assets and liabilities for the next five years is expected to approximate the following (in millions):

	Amortization of intangible assets		Amortization of intangible liabilities
Remainder of 2013	$	230	$	189
2014	$	306	$	179
2015	$	54	$	115
2016	$	31	$	101
2017	$	31	$	96

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Comprehensive Income (Tables)

3 Months Ended

Mar. 31, 2013

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

Schedule of Accumulated Other Comprehensive Income (Loss)

The following table provides the components of accumulated other comprehensive loss by component (in millions):

	Defined Benefit Pension Itemsa			Equity Method Investments			Total
Balance at December 31, 2012	$	(241	)	$	(4	)	$	(245	)
Other comprehensive income before reclassifications	—			(2		)	(2		)
Amounts reclassified from accumulated other comprehensive income	3			—			3
Balance at March 31, 2013	$	(238	)	$	(6	)	$	(244	)

^a Amounts are net of tax.

Reclassifications out of Accumulated Other Comprehensive Loss
	Three Months Ended March 31,
Details about Accumulated Other Comprehensive Loss Components	2013			Income Statement Line Item
Amortization of defined benefit pension items
Actuarial losses	$	5		b
	5			Total before tax
	(2		)	Tax expense
Total reclassifications for the period	$	3		Net of tax

^b This accumulated other comprehensive loss component is included in the computation of net periodic pension cost (see Note 8 for additional details).

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Comprehensive Income (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended
	Mar. 31, 2013		Mar. 31, 2012	Mar. 31, 2013 Pension Plans, Defined Benefit		Dec. 31, 2012 Pension Plans, Defined Benefit		Mar. 31, 2013 Equity Method Investments [Member]	Dec. 31, 2012 Equity Method Investments [Member]
Accumulated Other Comprehensive Income Loss [Roll Forward]
Accumulated Other Comprehensive Income (Loss), Beginning Balance	$ (245)			$ (238)	[1]	$ (241)	[1]	$ (6)	$ (4)
Other Comprehensive Income Loss Before Reclassifications	(2)			0	[1]			(2)
Amounts Reclassified From Accumulated Other Comprehensive Income Loss	3			3	[1]			0
Accumulated Other Comprehensive Income (Loss), Ending Balance	(244)			(238)	[1]	(241)	[1]	(6)	(4)
Reclassifications Out of Accumulated Other Comprehensive Loss [Abstract]
Actuarial losses	5	[2]
Change In Unrecognized Prior Service Credit And Actuarial Losses Tax Benefit (Expense)	(2)		(2)
Amounts Reclassified From Accumulated Other Comprehensive Income Loss	$ 3			$ 3	[1]			$ 0

[1] Amounts are net of tax.

[2] This accumulated other comprehensive loss component is included in the computation of net periodic pension cost (see Note 8 for additional details).

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Consolidated Balance Sheets (USD $) In Millions, unless otherwise specified	Mar. 31, 2013	Dec. 31, 2012
Current assets:
Cash and cash equivalents	$ 49	$ 350
Accounts receivable, net	1,562	1,146
Materials and supplies	839	800
Current portion of deferred income taxes	207	340
Other current assets	243	145
Total current assets	2,900	2,781
Property and equipment, net of accumulated depreciation of $1,717 and $1,623, respectively	50,382	50,056
Goodwill	14,803	14,803
Intangible assets, net	1,038	1,114
Other assets	1,900	1,870
Total assets	71,023	70,624
Current liabilities:
Accounts payable and other current liabilities	2,759	2,970
Long-term debt due within one year	173	203
Total current liabilities	2,932	3,173
Deferred income taxes	16,535	16,510
Long-term debt	1,587	1,622
Intangible liabilities, net	1,151	1,214
Pension and retiree health and welfare liability	755	786
Casualty and environmental liabilities	738	750
Other liabilities	976	944
Total liabilities	24,674	24,999
Commitments and contingencies (see Notes 6 and 7)
Stockholder’s equity:
Common stock, $1 par value, 1,000 shares authorized; issued and outstanding and paid-in-capital	42,920	42,920
Retained earnings	10,287	9,375
Intercompany notes receivable	(6,614)	(6,425)
Accumulated other comprehensive loss	(244)	(245)
Total stockholder’s equity	46,349	45,625
Total liabilities and stockholder's equity	$ 71,023	$ 70,624

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Fuel

3 Months Ended

Mar. 31, 2013

Derivative Instruments and Hedging Activities Disclosure [Abstract]

Fuel

Fuel

Fuel costs represented 30 percent of total operating expenses during both the three months ended March 31, 2013 and 2012.  The Company may enter into fuel hedge instruments from time to time; however, the Company has no unexpired hedge positions.

Derivative Activities

The Company had formally documented the relationship between the hedging instrument and the hedged item, as well as the risk management objective and strategy for the use of the hedging instrument. This documentation included linking the derivatives that were designated as fair value or cash flow hedges to specific assets or liabilities on the balance sheet, commitments or forecasted transactions. The Company assessed at the time a derivative contract was entered into, and at least quarterly thereafter, whether the derivative item was effective in offsetting the changes in fair value or cash flows. Any change in fair value resulting from ineffectiveness, as defined by authoritative accounting guidance related to derivatives and hedging, was recognized in current period earnings. For derivative instruments that were designated and qualified as cash flow hedges, the effective portion of the gain or loss on the derivative instrument was recorded in accumulated other comprehensive loss (AOCL) as a separate component of stockholder’s equity and reclassified into earnings in the period during which the hedge transaction affected earnings. Cash flows related to fuel derivatives are classified as operating activities in the Consolidated Statements of Cash Flows.

The Effects of Derivative Instruments Gains and Losses for the Three Months Ended March 31, 2013 and 2012
Derivatives in ASC 815-20 Cash Flow Hedging Relationships
	Amount of Gain Recognized in Other Comprehensive Income (OCI) on Derivatives (Effective Portion)
	2013		2012
Fuel Contracts	$	—	$	9
Total derivatives	$	—	$	9

		Amount of Gain Recognized from AOCL into Income (Effective Portion)
	Location of Gain Recognized	2013		2012
	from AOCL into Income
Fuel Contracts	Fuel expense	$	—	$	21
Total derivatives		$	—	$	21

		Amount of Loss Recognized in Income on Derivatives (Ineffective Portion and Amount Excluded from Effectiveness Testing)a
	Location of Loss Recognized	2013		2012
	in Income on Derivatives
Fuel Contracts	Fuel expense	$	—	$	(2	)
Total derivatives		$	—	$	(2	)

^a  No portion of the loss was excluded from the assessment of hedge effectiveness for the periods then ended.

The Company utilized a market approach using the forward commodity price for the periods hedged to value its fuel-derivative swaps. As such, the fair values of these instruments were classified as Level 2 valuations under authoritative accounting guidance related to fair value measurements.

Additional disclosure related to derivative instruments is included in Note 10 to the Consolidated Financial Statements.

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Accounting Policies and Interim Results (Details) (Northern Sante Fe Corporation [Member])	Feb. 12, 2010
Northern Sante Fe Corporation [Member]
Business Acquisition [Line Items]
Acquired remaining oustanding shares, percentage	100.00%

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Commitments and Contingencies - Environmental (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended
	Mar. 31, 2013	Mar. 31, 2012
Loss Contingencies [Line Items]
Accrued obligations for environmental matters, current liabilities	$ 70
Accrual for Environmental Loss Contingencies [Roll Forward]
Beginning balance	458	570
Accruals	0	3
Payments	(8)	(15)
Ending balance	450	558
Environmental Issue
Loss Contingencies [Line Items]
Site Contingency, Estimated Time Frame for Accrued Cost Distributions	10 years
Number of alleged environmental contamination sites (in sites)	246
Number of environmental superfund sites (in sites)	16
Liability for third-party environmental tort claims	13
Future costs of environmental liabilities, minimum	340
Future costs of environmental liabilities, maximum	$ 620

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Fuel (Tables)

3 Months Ended

Mar. 31, 2013

Derivative Instruments and Hedging Activities Disclosure [Abstract]

Schedule of Derivative Instruments, Gain (Loss) in Statement of Financial Performance

The Effects of Derivative Instruments Gains and Losses for the Three Months Ended March 31, 2013 and 2012
Derivatives in ASC 815-20 Cash Flow Hedging Relationships
	Amount of Gain Recognized in Other Comprehensive Income (OCI) on Derivatives (Effective Portion)
	2013		2012
Fuel Contracts	$	—	$	9
Total derivatives	$	—	$	9

		Amount of Gain Recognized from AOCL into Income (Effective Portion)
	Location of Gain Recognized	2013		2012
	from AOCL into Income
Fuel Contracts	Fuel expense	$	—	$	21
Total derivatives		$	—	$	21

		Amount of Loss Recognized in Income on Derivatives (Ineffective Portion and Amount Excluded from Effectiveness Testing)a
	Location of Loss Recognized	2013		2012
	in Income on Derivatives
Fuel Contracts	Fuel expense	$	—	$	(2	)
Total derivatives		$	—	$	(2	)

^a  No portion of the loss was excluded from the assessment of hedge effectiveness for the periods then ended.