SUBSEQUENT EVENT	12 Months Ended
Dec. 31, 2012
Notes to Consolidated Financial Statements [Abstract]
Subsequent Events	NOTE 18. SUBSEQUENT EVENT Sempra Mexico Debt Offering On February 14, 2013, Sempra Mexico publicly offered and sold $306 million (U.S. dollar equivalent) of 6.3-percent notes maturing in 2023 with a U.S. dollar equivalent rate of 4.12 percent after entering into a cross-currency swap for U.S. dollars at the time of issuance. Sempra Mexico also publicly offered and sold $102 million (U.S. dollar equivalent) of variable rate notes, maturing in 2018, which after a floating-to-fixed cross-currency swap for U.S. dollars at the time of issuance, carry a U.S. dollar equivalent rate of 2.66 percent. The notes and related interest are denominated in Mexican Pesos, and the interest rate for the variable rate notes is based on the Equilibrium Interbank Interest Rate plus 30 basis points. Sempra Mexico will use the proceeds of the notes for capital projects, including the development of natural gas pipelines and repayment of intercompany debt.

- Definition

Tabular disclosure of significant events or transactions that occurred after the balance sheet date through the date the financial statements were issued or the date the financial statements were available to be issued. Examples include: the sale of a capital stock issue, purchase of a business, settlement of litigation, losses resulting from fire or flood, losses on receivables, significant realized and unrealized gains and losses that result from changes in quoted market prices of securities, declines in market prices of inventory, changes in authorized or issued debt (SEC), significant foreign exchange rate changes, substantial loans to insiders or affiliates, significant long-term investments, and substantial dividends not in the ordinary course of business.

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