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Supplementary Data (Tables) | 9 Months Ended
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Sep. 30, 2024
Supplementary Data [Abstract] |
Accrued Liabilities | The following table presents the components of accrued liabilities.
| September 30, 2024 |  | December 31, 2023
Salaries, benefits and related expenses | $ | 372.9 |  |  | $ | 507.5 |
Interest | 39.0 |  |  | 40.2 |
Income taxes payable | 0.0 |  |  | 56.8 |
Office and related expenses | 17.3 |  |  | 22.3 |
Acquisition obligations | 4.9 |  |  | 2.9 |
Restructuring charges | 0.2 |  |  | 0.6 |
Other | 69.3 |  |  | 75.5 |
Total accrued liabilities | $ | 503.6 |  |  | $ | 705.8 |
Other Income (Expense), Net | Results of operations for the three and nine months ended September 30, 2024 and 2023 include certain items that are not directly associated with our revenue-producing operations.
Redeemable Noncontrolling Interest [Table Text Block] | Redeemable Non-controlling Interests Many of our acquisitions include provisions under which the non-controlling equity owners may require us to purchase additional interests in a subsidiary at their discretion. Redeemable non-controlling interests are adjusted quarterly, if necessary, to their estimated redemption value, but not less than their initial fair value. Any adjustments to the redemption value impact retained earnings or additional paid in capital, except for foreign currency translation adjustments. The following table presents changes in our redeemable non-controlling interests.
| Nine months ended September 30,
| 2024 |  | 2023
Balance at beginning of period | $ | 42.3 |  |  | $ | 38.3 |
Change in related non-controlling interests balance | 1.3 |  |  | (0.1) |
Changes in redemption value of redeemable non-controlling interests: |  |  |
Additions | 2.7 |  |  | 7.4 |
Redemptions and other | (6.1) |  |  | (0.4) |
Redemption value adjustments | 5.1 |  |  | (3.7) |
Currency translation adjustments | 0.3 |  |  | (0.1) |
Balance at end of period | $ | 45.6 |  |  | $ | 41.4 |

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- Definition Tabular disclosure of redeemable noncontrolling interest (as defined) included in the statement of financial position as either a liability or temporary equity. As of the date of the statement of financial position, such redeemable noncontrolling interest is currently redeemable, as defined, for cash or other assets of the entity at (1) at a fixed or determinable price on a fixed or determinable date, (2) at the option of the holder of the noncontrolling interest, or (3) upon occurrence of an event that is not solely within the control of the entity. + References No definition available. + Details
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- Definition Tabular disclosure of the components of accrued liabilities. + References No definition available. + Details
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- Definition Tabular disclosure of the detailed components of other nonoperating income. May include methodology, assumptions and amounts for: (a) dividends, (b) interest on securities, (c) profits on securities (net of losses), and (d) miscellaneous other income items. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Topic 220 -SubTopic 10 -Name Accounting Standards Codification -Section S99 -Paragraph 2 -Subparagraph (SX 210.5-03(7)) -Publisher FASB -URI https://asc.fasb.org/1943274/2147483621/220-10-S99-2 + Details
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