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v3.23.3

Acquisitions (Tables) | 9 Months Ended
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Sep. 30, 2023
Business Combinations [Abstract] |
Summary of Changes in Goodwill | The changes in goodwill are as follows (in thousands):
Balance at January 1, 2022 | $ | 2,199,937 |
Increase from acquisitions |  | 9,488 |
Adjustments related to 2021 acquisitions |  | 8,761 |
Increase from contributions of redeemable noncontrolling interests |  | 4,619 |
Balance at December 31, 2022 |  | 2,222,805 |
Increase from acquisitions |  | 336 |
Increase from contributions of redeemable noncontrolling interests |  | 2,821 |
Balance at September 30, 2023 | $ | 2,225,962 |
Transaction Related Expenses as Incurred | Transaction-related expenses comprised the following costs for the three and nine months ended September 30, 2023 and 2022 (in thousands):
| Three Months Ended September 30, |  |  | Nine Months Ended September 30, |
| 2023 |  |  | 2022 |  |  | 2023 |  |  | 2022 |
Legal, accounting and other acquisition-related costs | $ | 4,196 |  |  | $ | 2,020 |  |  | $ | 6,761 |  |  | $ | 4,696 |
Management transition costs |  | 3,615 |  |  |  | 5,626 |  |  |  | 14,590 |  |  |  | 7,826 |
Termination and restructuring costs |  | 3,436 |  |  |  | 3,213 |  |  |  | 5,441 |  |  |  | 5,859 |
| $ | 11,247 |  |  | $ | 10,859 |  |  | $ | 26,792 |  |  | $ | 18,381 |

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