Note 3. Revenues from contracts with customers

As discussed in Note 2, we adopted ASC 606 “Revenues from Contracts with Customers” on January 1, 2018. Our revenue recognition practices under ASC 606 do not differ materially from prior practices. Under ASC 606, revenues are recognized when a good or service is transferred to a customer. A good or service is transferred when (or as) the customer obtains control of that good or service. Revenues are based on the consideration we expect to receive in connection with our promises to deliver goods and services to our customers. Our accounting policies related to revenue from contracts with customers follow.

We manufacture and/or distribute a wide variety of industrial, building and consumer products. Our sales contracts provide customers with manufactured products and goods acquired for resale through wholesale and retail channels in exchange for consideration specified under the contracts. Contracts generally represent customer orders for individual products at stated prices. Sales contracts may contain either single or multiple performance obligations. In instances where contracts contain multiple performance obligations, we allocate the expected consideration to each obligation based on the relative stand-alone selling prices of each product or service.

Expected consideration (and therefore revenue) reflects reductions for returns, allowances, volume discounts and other incentives, some of which may be contingent on future events. In certain customer contracts of our grocery distribution business, consideration includes certain state and local excise taxes billed to customers on specified products when those taxes are levied directly upon us by the taxing authorities. Expected consideration excludes sales and value-added taxes collected on behalf of taxing authorities. Revenue includes consideration for shipping and other fulfillment activities performed prior to the customer obtaining control of the goods. We also elect to treat consideration for such services performed after control has passed to the customer as fulfillment activities.

Our product sales revenues are predominantly recognized at a point in time when control of the product transfers to the customer, which coincides with customer pickup or product delivery or acceptance, depending on terms of the arrangement. We recognize sales revenues and related costs with respect to certain contracts over time, primarily from certain castings, forgings and aerostructures contracts. Control of the product units under these contracts transfers continuously to the customer as the product is manufactured, given the products generally have no alternative use and the contract requires the customer to provide reasonable compensation if terminated for reasons other than breach of contract.

Our energy revenue derives primarily from tariff based sales arrangements approved by various regulatory bodies. These tariff based revenues are mainly comprised of energy, transmission, distribution and natural gas and have performance obligations to deliver energy products and services to customers which are satisfied over time as energy is delivered or services are provided. Our nonregulated energy revenue primarily relates to our renewable energy business.

Energy revenues recognized are equivalent to the amounts we have the right to invoice as it corresponds directly with the value to the customer of the performance to date and includes billed and unbilled amounts. As of March 31, 2018 and December 31, 2017, trade receivables, net included in other assets on the Consolidated Balance Sheets relate substantially to customer revenue, and includes unbilled revenue of $582 million and $665 million, respectively. Payments from customers are generally due from the customer within 30 days of billing. Rates charged for energy products and services are established by regulators or contractual arrangements that establish the transaction price, as well as the allocation of price amongst the separate performance obligations. When preliminary regulated rates are permitted to be billed prior to final approval by the applicable regulator, certain revenue collected may be subject to refund and a liability for estimated refunds is accrued.

Service revenues mainly derive from contracts with customers in which performance obligations are satisfied over time, including instances where customers receive and consume benefits as we perform the services. Revenues under such contracts are recorded over time. Service revenues primarily derive from contracts for freight rail transportation, real estate brokerage, automotive repair, aircraft management, aviation training and news distribution services.

The primary performance obligation under our freight rail transportation service contracts is to move freight from a point of origin to a point of destination for its customers. The performance obligations are represented by bills of lading which create a series of distinct services that have a similar pattern of transfer to the customer. The revenues for each performance obligation are based on various factors including the product being shipped, the origin and destination pair, and contract incentives which are outlined in various private rate agreements, common carrier public tariffs, interline foreign road agreements and pricing quotes. The transaction price is generally a per car amount to transport railcars from a specified origin to a specified destination. Freight revenues are recognized over time as the service is performed because the customer simultaneously receives and consumes the benefits of the service. Revenues recognized represent the proportion of the service completed as of the balance sheet date. Invoices for freight transportation services are generally issued to customers and paid within thirty days or less. 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.

Prior to January 1, 2018, we recognized revenues from the sales of fractional ownership interests in aircraft over the terms of the related management services agreements, as the transfers of the ownership interests were inseparable from the management services agreements. These agreements also include provisions that require us to repurchase the fractional interest at fair market value at contract termination or upon the customer’s request following the minimum commitment period. ASC 606 provides that such contracts are subject to accounting guidance for lease contracts and not ASC 606. The principal effects of this re-characterization were to increase both assets (primarily property, plant and equipment) and other liabilities by approximately $3.5 billion with a small reduction to retained earnings as of January 1, 2018. The re-categorization of these contracts as operating leases did not have a significant effect on our consolidated revenues or earnings for the first three months of 2018.

The following table summarizes customer contract revenues disaggregated by reportable segment and the source of the revenue for the three months ended March 31, 2018 (in millions). Other revenues included in our consolidated revenues were primarily insurance premiums earned, interest, dividend and other investment income and lease income which are not within the scope of ASC 606.


	Manufacturing			McLane Company			Service and Retail			BNSF			Berkshire Hathaway Energy			Finance and Financial Products			Insurance, Corporate and other			Total
Manufactured products:
Industrial and commercial products		$	6,393		$	—		$	54		$	—		$	—		$	161		$	—		$	6,608
Building products			2,919			—			—			—			—			1			—			2,920
Consumer products			2,848			—			—			—			—			848			—			3,696
Grocery and convenience store distribution			—			8,512			—			—			—			—			—			8,512
Food and beverage distribution			—			3,643			—			—			—			—			—			3,643
Auto sales			—			—			1,931			—			—			—			—			1,931
Other retail and wholesale distribution			496			—			2,694			—			—			20			—			3,210
Service			218			17			942			5,580			700			8			—			7,465
Electricity and natural gas			—			—			—			—			3,524			—			—			3,524

Total			12,874			12,172			5,621			5,580			4,224			1,038			—			41,509
Other revenue			38			17			939			10			288			1,022			14,650			16,964

		$	12,912		$	12,189		$	6,560		$	5,590		$	4,512		$	2,060		$	14,650		$	58,473

A summary of the transaction price allocated to the significant unsatisfied remaining performance obligations relating to contracts with expected durations in excess of one year as of March 31, 2018 follows (in millions). Such contracts relate to our utilities and energy businesses.


	Performance obligations expected to be satisfied:
	Less than 12 months		Greater than 12 months		Total
Electricity and natural gas	$	1,007	$	4,352	$	5,359