Basis of Presentation	3 Months Ended
Mar. 31, 2013
Basis of Presentation
Basis of Presentation	(1) Basis of Presentation The unaudited consolidated condensed financial statements presented herein include the accounts of Tutor Perini Corporation and its wholly owned subsidiaries (“Tutor Perini” or the “Company”). The Company’s interests in construction joint ventures are accounted for using the proportionate consolidation method whereby the Company’s proportionate share of each joint venture’s assets, liabilities, revenues and cost of operations are included in the appropriate classifications in the consolidated financial statements. All intercompany transactions and balances have been eliminated in consolidation. The unaudited consolidated condensed financial statements have been prepared in accordance with the instructions to Form 10-Q and do not include all of the information and note disclosures required by accounting principles generally accepted in the United States (“U.S. GAAP”) as codified in the Financial Accounting Standards Board’s (“FASB”) Accounting Standards Codification. These statements should be read in conjunction with the financial statements and notes thereto included in the Company’s Annual Report on Form 10-K for the year ended December 31, 2012. In the opinion of management, the accompanying unaudited consolidated condensed financial statements include all adjustments, consisting only of normal recurring adjustments, necessary to present fairly the Company’s financial position as of March 31, 2013 and December 31, 2012, results of operations and comprehensive income for the three months ended March 31, 2013 and 2012, and cash flows for the three months ended March 31, 2013 and 2012. The results of operations for the three months ended March 31, 2013 are not indicative of the results that may be expected for the year ending December 31, 2013 because, among other reasons, such results can vary depending on the timing of progress achieved and changes in estimated profitability of projects being reported. Prior to the quarterly reporting period ended June 30, 2012, the Company had presented payments related to the deferred purchase price obligation of previous acquisitions within cash flows used by investing activities in the Consolidated Condensed Statement of Cash Flows. The Company corrected this presentation to appropriately reflect the cash paid to settle the liability recognized at fair value at the conclusion of the measurement period within cash flows used by financing activities, and the remaining cash paid (e.g., changes in fair value of the liability after the conclusion of the measurement period) was reclassified within cash flows used by operating activities. For the three months ended March 31, 2012, this correction resulted in an increase in cash flows provided by investing activities of $1.2 million, and a corresponding decrease in cash flows provided by financing activities of $1.2 million in the Consolidated Condensed Statement of Cash Flows. There was no impact on the Company’s Consolidated Condensed Statements of Operations or Balance Sheets. The Company considers events or transactions that occur after the balance sheet date but before the financial statements are issued to provide additional evidence relative to certain estimates or to identify matters that require additional disclosures.

(1) Basis of Presentation

The unaudited consolidated condensed financial statements presented herein include the accounts of Tutor Perini Corporation and its wholly owned subsidiaries (“Tutor Perini” or the “Company”). The Company’s interests in construction joint ventures are accounted for using the proportionate consolidation method whereby the Company’s proportionate share of each joint venture’s assets, liabilities, revenues and cost of operations are included in the appropriate classifications in the consolidated financial statements. All intercompany transactions and balances have been eliminated in consolidation.

The unaudited consolidated condensed financial statements have been prepared in accordance with the instructions to Form 10-Q and do not include all of the information and note disclosures required by accounting principles generally accepted in the United States (“U.S. GAAP”) as codified in the Financial Accounting Standards Board’s (“FASB”) Accounting Standards Codification. These statements should be read in conjunction with the financial statements and notes thereto included in the Company’s Annual Report on Form 10-K for the year ended December 31, 2012.

In the opinion of management, the accompanying unaudited consolidated condensed financial statements include all adjustments, consisting only of normal recurring adjustments, necessary to present fairly the Company’s financial position as of March 31, 2013 and December 31, 2012, results of operations and comprehensive income for the three months ended March 31, 2013 and 2012, and cash flows for the three months ended March 31, 2013 and 2012. The results of operations for the three months ended March 31, 2013 are not indicative of the results that may be expected for the year ending December 31, 2013 because, among other reasons, such results can vary depending on the timing of progress achieved and changes in estimated profitability of projects being reported.

Prior to the quarterly reporting period ended June 30, 2012, the Company had presented payments related to the deferred purchase price obligation of previous acquisitions within cash flows used by investing activities in the Consolidated Condensed Statement of Cash Flows. The Company corrected this presentation to appropriately reflect the cash paid to settle the liability recognized at fair value at the conclusion of the measurement period within cash flows used by financing activities, and the remaining cash paid (e.g., changes in fair value of the liability after the conclusion of the measurement period) was reclassified within cash flows used by operating activities. For the three months ended March 31, 2012, this correction resulted in an increase in cash flows provided by investing activities of $1.2 million, and a corresponding decrease in cash flows provided by financing activities of $1.2 million in the Consolidated Condensed Statement of Cash Flows. There was no impact on the Company’s Consolidated Condensed Statements of Operations or Balance Sheets.

The Company considers events or transactions that occur after the balance sheet date but before the financial statements are issued to provide additional evidence relative to certain estimates or to identify matters that require additional disclosures.