Presentation of Financial Statements

12 Months Ended

Dec. 31, 2012

Presentation of Financial Statements [Abstract]

Presentation of Financial Statements

Presentation of Financial Statements

The terms “Omnicom,” “we,” “our” and “us” each refer to Omnicom Group Inc. and our subsidiaries, unless the context indicates otherwise. The accompanying consolidated financial statements were prepared in accordance with generally accepted accounting principles in the United States (“U.S. GAAP” or “GAAP”). All intercompany balances and transactions have been eliminated.

The preparation of financial statements in conformity with U.S. GAAP requires us to make estimates and assumptions that affect the amounts of assets, liabilities, revenue and expenses that are reported in the consolidated financial statements and accompanying notes. Actual results could differ from those estimates and assumptions.