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Supplementary Data (Notes) | 9 Months Ended
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Sep. 30, 2016
Supplementary Data [Abstract] |
Accrued Liabilities | Accrued Liabilities The following table presents the components of accrued liabilities.
| September 30, 2016 |  | December 31, 2015
Salaries, benefits and related expenses | $ | 386.9 |  |  | $ | 502.4 |
Acquisition obligations | 73.8 |  |  | 50.1 |
Office and related expenses | 42.9 |  |  | 51.0 |
Interest | 17.2 |  |  | 17.3 |
Other | 110.9 |  |  | 139.5 |
Total accrued liabilities | $ | 631.7 |  |  | $ | 760.3 |
Other Income, Net | Other Income (Expense), Net Results of operations for the three and nine months ended September 30, 2016 and 2015 include certain items that are not directly associated with our revenue-producing operations.
| Three months ended September 30, |  | Nine months ended September 30,
| 2016 |  | 2015 |  | 2016 |  | 2015
Gains (losses) on sales of businesses and investments | $ | 3.9 |  |  | $ | (37.6 | ) |  | $ | (14.6 | ) |  | $ | (37.8 | )
Other income, net | 2.2 |  |  | 0.4 |  |  | 3.5 |  |  | 1.4 |
Total other income (expense), net | $ | 6.1 |  |  | $ | (37.2 | ) |  | $ | (11.1 | ) |  | $ | (36.4 | )
Gains (Losses) on Sales of Businesses and Investments – During the three and nine months ended September 30, 2016, the amounts recognized are related primarily to sales of businesses within our IAN segment. During the three and nine months ended September 30, 2015, the amounts recognized are related to sales of businesses within our IAN and CMG segments and the classification of certain assets as held for sale within our IAN segment.
Share Repurchase Program | Share Repurchase Program In February 2016, our Board of Directors (the "Board") authorized a new share repurchase program to repurchase from time to time up to $300.0, excluding fees, of our common stock (the "2016 Share Repurchase Program"), which was in addition to the remaining amount available to be repurchased from the $300.0 authorization made by the Board in February 2015 (the "2015 Share Repurchase Program"). 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 for the nine months ended September 30, 2016 and 2015.
| Nine months ended September 30,
| 2016 |  | 2015
Number of shares repurchased | 8.5 |  |  | 8.5 |
Aggregate cost, including fees | $ | 193.3 |  |  | $ | 172.3 |
Average price per share, including fees | $ | 22.69 |  |  | $ | 20.36 |
We fully utilized the 2015 Share Repurchase Program during the third quarter of 2016. As of September 30, 2016, $265.4 remains available for repurchase under the 2016 Share Repurchase Program. The 2016 Share Repurchase Program has no expiration date.

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