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Supplementary Data (Notes) | 3 Months Ended
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Mar. 31, 2014
Supplementary Data [Abstract] |
Supplementary Data | Supplementary Data Accrued Liabilities The following table presents the components of accrued liabilities.
| March 31, 2014 |  | December 31, 2013
Salaries, benefits and related expenses | $ | 333.2 |  |  | $ | 467.2 |
Office and related expenses | 54.8 |  |  | 56.9 |
Acquisition obligations | 56.6 |  |  | 12.8 |
Interest | 16.1 |  |  | 16.0 |
Restructuring and other reorganization-related | 17.1 |  |  | 46.7 |
Other | 109.6 |  |  | 118.8 |
Total accrued liabilities | $ | 587.4 |  |  | $ | 718.4 |
Other Income, Net Results of operations for the three months ended March 31, 2014 and 2013 include certain items that are not directly associated with our revenue-producing operations.
| Three months ended March 31,
| 2014 |  | 2013
Gains on sales of businesses and investments | $ | 0.8 |  |  | $ | 2.2 |
Vendor discounts and credit adjustments | 1.5 |  |  | 0.2 |
Other expense, net | (0.6 | ) |  | (0.6 | )
Total other income, net | $ | 1.7 |  |  | $ | 1.8 |
Sales of Businesses and Investments – During the three months ended March 31, 2014, the gains on sales of businesses and investments primarily related to a gain recognized from the sale of a business within our IAN segment. During the three months ended March 31, 2013, the gains on sales of businesses and investments primarily related to a gain recognized from the sale of marketable securities in the Asia Pacific region within our IAN segment. Vendor Discounts and Credit Adjustments – In connection with the liabilities related to vendor discounts and credits established as part of the restatement we presented in our 2004 Annual Report on Form 10-K, these adjustments reflect the reversal of certain of these liabilities primarily where the statute of limitations has lapsed, or as a result of differences resulting from settlements with clients or vendors. Share Repurchase Program In February 2013, our Board of Directors (the "Board") authorized a share repurchase program to repurchase from time to time up to $300.0, excluding fees, of our common stock (the "2013 share repurchase program"). In March 2013, the Board authorized an increase in the amount available under our 2013 share repurchase program up to $500.0, excluding fees, of our common stock to be used towards the repurchase of shares resulting from the conversion to common stock of the 4.75% Notes. In February 2014, our Board authorized a new share repurchase program to repurchase from time to time up to $300.0, excluding fees, of our common stock. We may effect such repurchases through open market purchases, trading plans established in accordance with SEC rules, derivative transactions or other means. We expect to continue to repurchase our common stock in future periods, although the timing and amount of the repurchases will depend on market conditions and other funding requirements. The following table presents our share repurchase activity under our share repurchase programs.
| Three months ended March 31,
| 2014 |  | 2013
Number of shares repurchased | 2.6 |  | 6.2 |
Aggregate cost, including fees | $ | 44.9 |  |  | $ | 75.8 |
Average price per share, including fees | $ | 17.17 |  |  | $ | 12.17 |
As of March 31, 2014, $373.7 remains available for repurchase under the share repurchase programs. The share repurchase programs have no expiration date.

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