Basis of Presentation

3 Months Ended

Mar. 31, 2013

Organization, Consolidation and Presentation of Financial Statements [Abstract]

Basis of Presentation

Note 1:  Basis of Presentation

Boardwalk Pipeline Partners, LP (the Partnership) is a Delaware limited partnership formed in 2005 to own and operate the business conducted by its primary subsidiary Boardwalk Pipelines, LP (Boardwalk Pipelines), and its operating subsidiaries, Gulf Crossing Pipeline Company LLC (Gulf Crossing), Gulf South Pipeline Company, LP (Gulf South), Texas Gas Transmission, LLC (Texas Gas), Boardwalk Field Services, LLC (Field Services), Petal Gas Storage, LLC (Petal), Hattiesburg Gas Storage Company (Hattiesburg), Boardwalk Louisiana Midstream, LLC (Louisiana Midstream), and Boardwalk Storage Company, LLC (Boardwalk Storage) (together, the operating subsidiaries) and consists of integrated natural gas and natural gas liquids (NGLs) pipeline and storage systems and natural gas gathering and processing.

As of April 29, 2013, Boardwalk Pipelines Holding Corp. (BPHC), a wholly-owned subsidiary of Loews Corporation (Loews), owned 102.7 million of the Partnership’s common units, all 22.9 million of the Partnership’s class B units and, through Boardwalk GP, LP (Boardwalk GP), an indirect wholly-owned subsidiary of BPHC, holds the 2% general partner interest and all of the incentive distribution rights (IDRs). As of April 29, 2013, the common units, class B units and general partner interest owned by BPHC represent approximately 55% of the Partnership’s equity interests, excluding the IDRs. The Partnership’s common units are traded under the symbol “BWP” on the New York Stock Exchange.

The accompanying unaudited condensed consolidated financial statements of the Partnership were prepared pursuant to the rules and regulations of the Securities and Exchange Commission. Certain information and footnote disclosures normally included in financial statements prepared in accordance with accounting principles generally accepted in the United States of America (GAAP) have been condensed or omitted pursuant to such rules and regulations. In the opinion of management, the accompanying condensed consolidated financial statements reflect all adjustments (consisting of only normal recurring accruals) necessary to present fairly the financial position as of March 31, 2013, and December 31, 2012, and the results of operations and comprehensive income for the three months ended March 31, 2013 and 2012, and changes in cash flows and changes in partners’ capital for the three months ended March 31, 2013 and 2012. Reference is made to the Notes to Consolidated Financial Statements in the 2012 Annual Report on Form 10-K, which should be read in conjunction with these unaudited condensed consolidated financial statements. The accounting policies described in Note 2 to the Consolidated Financial Statements included in such Annual Report on Form 10-K are the same used in preparing the accompanying unaudited condensed consolidated financial statements. Net income for interim periods may not necessarily be indicative of results for the full year.

Certain amounts reported within Total operating costs and expenses in the Condensed Consolidated Statement of Operations for the 2012 period have been reclassified to conform to the current presentation. The effect of the reclassification increased Operation and maintenance expense and decreased Net loss (gain) on sale of operating assets, by $0.4 million for the three months ended March 31, 2012, with no impact on Total operating costs and expenses, Operating income or Net Income.