XML 78 R11.htm IDEA: XBRL DOCUMENT v2.4.0.6
Significant Accounting Policies
12 Months Ended
Dec. 31, 2012
Significant Accounting Policies [Abstract]  
Significant Accounting Policies [Text Block]
Significant Accounting Policies
 
Principles of Consolidation
The Consolidated Financial Statements include the accounts of BNSF, including its principal subsidiary BNSF Railway. All intercompany accounts and transactions have been eliminated. The Company evaluates its less than majority-owned investments for consolidation pursuant to authoritative accounting guidance related to the consolidation of variable interest entities (VIEs)The Company consolidates a VIE when it possesses both the power to direct the activities of the VIE that most significantly impact its economic performance and when the Company is either obligated to absorb the losses that could potentially be significant to the VIE or the Company holds the right to receive benefits from the VIE that could potentially be significant to the VIE.
 
Use of Estimates
The preparation of financial statements in accordance with generally accepted accounting principles in the United States of America (GAAP) requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities and disclosure of contingent assets and liabilities at the date of the financial statements and the reported amounts of revenues and expenses during the periods presented. These estimates and assumptions are periodically reviewed by management. Actual results could differ from those estimates.

Revenue Recognition
Transportation revenues are recognized based upon the proportion of service provided as of the balance sheet date, with related expenses recognized as incurred. Revenues from ancillary services are recognized when performed. Customer incentives, which are primarily provided for shipping a specified cumulative volume or shipping to/from specific locations, are recorded as a reduction to revenue on a pro-rata basis based on actual or projected future customer shipments. When using projected shipments, the Company relies on historic trends as well as economic and other indicators to estimate the liability for customer incentives.
 
Accounts Receivable, Net
Accounts receivable, net includes accounts receivable reduced by an allowance for bill adjustments and uncollectible accounts. The allowance for bill adjustments and uncollectible accounts is based on historical experience as well as any known trends or uncertainties related to customer billing and account collectibility. Allowances for uncollectible accounts are charged off when it is determined that the counterparty will be unable to pay based on the contractual terms of the receivables.
 
Cash and Cash Equivalents
All short-term investments with original maturities of 90 days or less are considered cash equivalents. Cash equivalents are stated at cost, which approximates market value because of the short maturity of these instruments.
 
Materials and Supplies
Materials and supplies, which consist mainly of rail, ties and other items for construction and maintenance of property and equipment, as well as diesel fuel, are valued at the lower of average cost or market.
 
Goodwill and Other Intangible Assets and Liabilities
Goodwill is the excess of the cost of an acquired entity over the net of the amounts assigned to assets acquired and liabilities assumed.
 
Goodwill is tested for impairment annually or more frequently if events or circumstances indicate that the carrying amount may not be recoverable. The impairment test involves a two-step process. The first step is to estimate the fair value of the reporting unit through discounting projected future net cash flows. If the carrying amount of a reporting unit, including goodwill, exceeds the estimated fair value, a second step is performed. Under the second step, the identifiable assets and liabilities, including identifiable intangible assets and liabilities, of the reporting unit are estimated at fair value as of the current testing date. The excess of the estimated fair value of the reporting unit over the estimated fair value of net assets establishes the implied value of goodwill. If the carrying amount of goodwill exceeds the implied value of goodwill, an impairment loss is recognized in an amount equal to that excess.
 
Other 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. Other intangible assets and liabilities are reviewed for impairment when events or changes in circumstances indicate that the carrying amount may not be recoverable or realized.
 
See Note 10 to the Consolidated Financial Statements for further information related to goodwill and other intangible assets and liabilities.
 
Property and Equipment, Net
BNSF’s railroad operations are highly capital intensive and its large base of homogeneous, network-type assets turns over on a continuous basis. Each year BNSF develops a capital program for the replacement of assets and for the acquisition or construction of assets that enables BNSF to enhance the efficiency of operations, gain strategic benefit or provide new service offerings to customers. Assets purchased or constructed throughout the year are capitalized if they meet applicable minimum units of property criteria.
 
Normal repairs and maintenance are charged to operating expense as incurred, while costs incurred that extend the useful life of an asset, improve the safety of BNSF’s operations, or improve operating efficiency are capitalized.
 
Property and equipment are stated at cost and are depreciated and amortized on a straight-line basis over their estimated useful lives. Upon application of acquisition method accounting at the Merger date, property and equipment were measured at fair value to establish a new historical cost basis. The Company uses the group method of depreciation in which a single depreciation rate is applied to the gross investment in a particular class of property, despite differences in the service life or salvage value of individual property units within the same class. The Company conducts studies of depreciation rates and the required accumulated depreciation balance as required by the Surface Transportation Board (STB), which is generally every three years for equipment property and every six years for track structure and other roadway property. These detailed studies form the basis for our depreciation methods used in accordance with GAAP. There are no differences between assumptions used in determining average service lives between STB reporting and GAAP.

Depreciation studies take into account the following factors:

Statistical analysis of historical patterns of use and retirements of each of BNSF’s asset classes;
Evaluation of any expected changes in current operations and the outlook for continued use of the assets;
Evaluation of technological advances and changes to maintenance practices; and
Expected salvage to be received upon retirement.

Changes in the estimated service lives of the assets and their related depreciation rates are implemented prospectively. Currently, BNSF is not aware of any specific factors that would cause significant changes in average useful service lives.
 
Under group depreciation, the historical cost net of salvage of depreciable property that is retired or replaced in the ordinary course of business is charged to accumulated depreciation and no gain or loss is recognized. This historical cost of certain assets is estimated as it is impracticable to track individual, homogeneous network-type assets. Historical costs are estimated by deflating current costs using the Producer Price Index (PPI). The PPI was selected because it closely correlates with the major costs of the items comprising the asset classes. Because of the number of estimates inherent in the depreciation and retirement processes and because it is impossible to precisely estimate each of these variables until a group of property is completely retired, BNSF continually monitors the estimated service lives of its assets and the accumulated depreciation associated with each asset class to ensure its depreciation rates are appropriate.
 
For retirements of depreciable asset classes that do not occur in the normal course of business, a gain or loss may be recognized in operating expense if the retirement meets each of the following conditions: (i) is unusual, (ii) is material in amount, and (iii) varies significantly from the retirement profile identified through BNSF’s depreciation studies. During the three fiscal years presented, no such gains or losses were recognized due to the retirement of depreciable assets. Gains or losses from disposals of land and non-rail property are recorded at the time of their occurrence.
 
When BNSF purchases an asset, all costs necessary to make the asset ready for its intended use are capitalized. BNSF self-constructs portions of its track structure and rebuilds certain classes of rolling stock.  Expenditures that significantly increase asset values or extend useful lives are capitalized. In addition to direct labor and material, certain indirect costs such as materials, small tools and project supervision are capitalized. Annually, a study is performed for the purpose of identifying indirect costs that clearly relate to capital projects. From those studies, an overhead application rate is developed. Indirect projects costs are then allocated to capital projects using this overhead application rate.     
 
BNSF incurs certain direct labor, contract service and other costs associated with the development and installation of internal-use computer software. Costs for newly developed software or significant enhancements to existing software are typically capitalized. Research, preliminary project, operations, maintenance and training costs are charged to operating expense when the work is performed.
 
Assets held under capital leases are recorded at the lower of the net present value of the minimum lease payments or at the fair value of the leased asset at the inception of the lease. Amortization expense is computed using the straight-line method over the shorter of the estimated useful lives of the asset or the period of the related lease.
 
Leasehold improvements that meet capitalization criteria are capitalized and amortized on a straight-line basis over the lesser of their estimated useful lives or the remaining lease term.
 
Long-lived assets are reviewed for impairment when events or changes in circumstances indicate that the carrying amount of an asset may not be recoverable. If impairment indicators are present and the estimated future undiscounted cash flows are less than the carrying value of the long-lived assets, the carrying value is reduced to the estimated fair value as measured by the discounted cash flows.
 
Planned Major Maintenance Activities
BNSF utilizes the deferral method of accounting for leased locomotive overhauls, which includes the refurbishment of the engine and related components. Accordingly, BNSF has established an asset for overhauls that have been performed. This asset, which is included in property and equipment, net in the Consolidated Balance Sheets, is amortized to expense using the straight-line method until the next overhaul is performed or the end of the lease, whichever comes first, typically between six and eight years. 

Rail Grinding Costs
Upon the Merger discussed in Note 5, BNSF adopted the direct expense method of accounting for rail grinding costs, under which the Company expenses rail grinding costs as incurred.

Environmental Liabilities
Liabilities for environmental cleanup costs are initially recorded when BNSF’s liability for environmental cleanup is both probable and reasonably estimable. Subsequent adjustments to initial estimates are recorded as necessary based upon additional information developed in subsequent periods. Estimates for these liabilities are undiscounted.
 
Personal Injury Claims
Liabilities for personal injury claims are initially recorded when the expected loss is both probable and reasonably estimable. Subsequent adjustments to initial estimates are recorded as necessary based upon additional information developed in subsequent periods. Liabilities recorded for unasserted personal injury claims, including those related to asbestos, are based on information currently available. Other than the fair value adjustments recorded in the application of acquisition method accounting, as discussed in Note 5, estimates of liabilities for personal injury claims are undiscounted.
 
Income Taxes
Deferred tax assets and liabilities are measured using the tax rates that apply to taxable income in the period in which the deferred tax asset or liability is expected to be realized or paid. Changes in the Company’s estimates regarding the statutory tax rate to be applied to the reversal of deferred tax assets and liabilities could materially affect the effective tax rate. Valuation allowances are established to reduce deferred tax assets if it is more likely than not that some or all of the deferred tax asset will not be realized. BNSF has not recorded a valuation allowance, as it believes that the deferred tax assets will be fully realized in the future. Investment tax credits are accounted for using the flow-through method.
 
The Company recognizes the tax benefit from an uncertain tax position only if it is more likely than not that the tax position will be sustained on examination by the taxing authorities, based on the technical merits of the position. The tax benefits recognized in the financial statements from such a position are measured based on the largest benefit that has a greater than fifty percent likelihood of being realized upon ultimate settlement.
 
BNSF is included in the U.S. consolidated federal income tax return of Berkshire beginning as of February 13, 2010. BNSF’s tax expense and liabilities have been computed on a stand alone basis, and substantially all of its current federal income taxes payable is remitted each quarter to Berkshire.  
 
Stock-Based Compensation
The Company recognizes the compensation expense related to the cost of employee services received in exchange for Berkshire (Successor) or BNSF (Predecessor) equity interests over the award’s vesting period based on the award’s fair value at the appropriate measurement date under authoritative accounting guidance.
 
Employment Benefit Plans
The Company estimates liabilities and expenses for pension and retiree health and welfare plans. Estimated amounts are based on historical information, current information and estimates regarding future events and circumstances. Significant assumptions used in the valuation of pension and/or retiree health and welfare liabilities include the expected return on plan assets, discount rate, rate of increase in compensation levels and the health care cost trend rate.
 
Fair Value Measurements
As defined under authoritative accounting guidance, fair value is the price that would be received to sell an asset or paid to transfer a liability between market participants in the principal market or in the most advantageous market when no principal market exists. Adjustments to transaction prices or quoted market prices may be required in illiquid or disorderly markets in order to estimate fair value. Different valuation techniques may be appropriate under the circumstances to determine the value that would be received to sell an asset or paid to transfer a liability in an orderly transaction. Market participants are assumed to be independent, knowledgeable, able and willing to transact an exchange and not under duress. Nonperformance or credit risk is considered in determining the fair value of liabilities. Considerable judgment may be required in interpreting market data used to develop the estimates of fair value. Accordingly, estimates of fair value presented herein are not necessarily indicative of the amounts that could be realized in a current or future market exchange.
 
The authoritative accounting guidance specifies a three-level hierarchy of valuation inputs which was established to increase consistency, clarity and comparability in fair value measurements and related disclosures.

Level 1–Quoted prices for identical assets or liabilities in active markets that the Company has the ability to access at the measurement date.
Level 2–Quoted prices for similar assets or liabilities in active markets; quoted prices for identical or similar assets or liabilities in markets that are not active; and model-derived valuations in which all significant inputs are observable market data.
Level 3–Valuations derived from valuation techniques in which one or more significant inputs are unobservable.
 
Reclassifications and Corrections
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 previously reported results of operations, cash flows or financial position.

Certain prior year amounts in the Consolidated Statements of Cash Flows have been adjusted to correctly reflect the presentation of changes in accrued but unpaid capital items. The correction did not affect the Company's previously reported results of operations or financial position.