Million British thermal units

Megawatt hours

Before reductions for unamortized discount (net of premium) and debt issuance costs of $106 million and $107 million at March 31, 2016 and December 31, 2015, respectively, and excluding build-to-suit and capital lease obligations of $386 million and $387 million at March 31, 2016 and December 31, 2015, respectively. We discuss our long-term debt in Note 6 above and in Note 5 of the Notes to Consolidated Financial Statements in the Annual Report.

Before reductions for unamortized discount and debt issuance costs of $24 million at March 31, 2016 and December 31, 2015, and excluding capital lease obligations of $1 million at March 31, 2016 and December 31, 2015.

Maturity dates are 2016-2065.

Maturity dates are 2016-2115.

Included in Current Assets: Other for SoCalGas.

Included in Current Liabilities: Other for SoCalGas.

All amounts are net of income tax, if subject to tax, and exclude noncontrolling interests.

Amounts include Otay Mesa VIE. All of SDG&E’s interest rate derivative activity relates to Otay Mesa VIE.

Amounts are included in the computation of net periodic benefit cost (see "Pension and Other Postretirement Benefits" above).

Normal purchase contracts previously measured at fair value are excluded.

Level 3 instruments include $312 million and $315 million at March 31, 2016 and December 31, 2015, respectively, related to Otay Mesa VIE.

Before reductions for unamortized discount and debt issuance costs of $43 million at March 31, 2016 and December 31, 2015, and excluding capital lease obligations of $243 million and $244 million at March 31, 2016 and December 31, 2015, respectively.

There was no hedge ineffectiveness in either the three months ended March 31, 2016 or 2015. All other changes in the fair values of the interest rate swap agreements are exactly offset by changes in the fair value of the underlying long-term debt and recorded in Other Income, Net.

Includes Otay Mesa VIE. All of SDG&E’s amounts relate to Otay Mesa VIE.

Derived from audited financial statements.

Revenues for reportable segments include intersegment revenues of $3 million, $17 million, $27 million and $30 million for the three months ended March 31, 2016 and $2 million, $19 million, $25 million and $43 million for the three months ended March 31, 2015 for SDG&E, SoCalGas, Sempra Mexico and Sempra Natural Gas, respectively.

Excludes securities that are held to maturity.

Amounts include negligible hedge ineffectiveness in the three months ended March 31, 2016 and 2015.

Chilquinta Energía has four subsidiaries with noncontrolling interests held by others. Percentage range reflects the highest and lowest ownership percentages among these subsidiaries.

Amounts include principal balances plus accumulated interest outstanding.

U.S. dollar-denominated loan, at a variable interest rate based on a 30-day LIBOR plus 450 basis points (4.94 percent at March 31, 2016), to finance the Los Ramones Norte pipeline project.

U.S. dollar-denominated loan, at a variable interest rate based on a 30-day LIBOR plus 637.5 basis points (6.81 percent at March 31, 2016), to finance the first phase of the Energía Sierra Juárez wind project.

U.S. dollar-denominated loan, at a fixed interest rate with no stated maturity date, to provide project financing for the construction of transmission lines at Eletrans S.A. and Eletrans II S.A., both of which are joint ventures at Chilquinta Energía.

SDG&E and SoCalGas are included in the consolidated income tax return of Sempra Energy and are allocated income tax expense from Sempra Energy in an amount equal to that which would result from each company having always filed a separate return.

At both March 31, 2016 and December 31, 2015, SoCalGas' natural gas inventory for core customers is net of the estimated inventory loss related to the Aliso Canyon natural gas leak, which we discuss in Note 11.

Interest on regulatory balancing accounts.

Represents investment gains on dedicated assets in support of our executive retirement and deferred compensation plans. These amounts are partially offset by corresponding changes in compensation expense related to the plans.

Excludes cash balances and cash equivalents.

Income at Luz del Sur associated with the relocation of electrical infrastructure.

Includes the effect of the contractual ability to settle contracts under master netting agreements and with cash collateral, as well as cash collateral not offset.

Excluding accumulated interest outstanding of $13 million and $11 million at March 31, 2016 and December 31, 2015, respectively.