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Segment Information - Reconciliation of Segment Gross Contribution to Net Income (Details) - USD ($) $ in Thousands | 3 Months Ended | 9 Months Ended
--- | --- | ---
Sep. 30, 2024 | Jun. 30, 2024 | Mar. 31, 2024 | Sep. 30, 2023 | Jun. 30, 2023 | Mar. 31, 2023 | Sep. 30, 2024 | Sep. 30, 2023
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items] |  |  |  |  |  |  |  |
Total segment gross contribution | $ 245,824 |  |  | $ 244,417 |  |  | $ 838,492 | $ 935,481
Costs and expenses: |  |  |  |  |  |  |  |
Cost of services and product development - unallocated | 475,342 |  |  | 450,841 |  |  | 1,448,097 | 1,373,398
Selling, general and administrative | 711,729 |  |  | 660,527 |  |  | 2,113,633 | 1,997,785
Acquisition and integration charges | 159 |  |  | 4,463 |  |  | 977 | 7,804
Gain from sale of divested operation | 0 |  |  | 0 |  |  | 0 | 135,410
Operating income | 245,824 |  |  | 244,417 |  |  | 838,492 | 935,481
Interest expense and other, net | (18,952) |  |  | (19,943) |  |  | (52,766) | (68,683)
Gain on event cancellation insurance claims | 300,000 |  |  | 0 |  |  | 300,000 | 3,077
Less: Provision for income taxes | 111,823 |  |  | 44,465 |  |  | 230,584 | 196,040
Net income | 415,049 | $ 229,548 | $ 210,545 | 180,009 | $ 198,043 | $ 295,783 | $ 855,142 | 673,835
Maximum |  |  |  |  |  |  |  |
Costs and expenses: |  |  |  |  |  |  |  |
Percent of target bonus charges allocated to segments |  |  |  |  |  |  | 100.00% |
Operating Segments |  |  |  |  |  |  |  |
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items] |  |  |  |  |  |  |  |
Total segment gross contribution | 1,015,432 |  |  | 963,149 |  |  | $ 3,132,495 | 2,971,312
Costs and expenses: |  |  |  |  |  |  |  |
Operating income | 1,015,432 |  |  | 963,149 |  |  | 3,132,495 | 2,971,312
Corporate and Reconciling Items |  |  |  |  |  |  |  |
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items] |  |  |  |  |  |  |  |
Total segment gross contribution | (769,608) |  |  | (718,732) |  |  | (2,294,003) | (2,035,831)
Costs and expenses: |  |  |  |  |  |  |  |
Cost of services and product development - unallocated | 6,468 |  |  | 5,206 |  |  | 28,300 | 23,872
Selling, general and administrative | 711,729 |  |  | 660,527 |  |  | 2,113,633 | 1,997,785
Depreciation and amortization | 51,252 |  |  | 48,536 |  |  | 151,093 | 141,780
Acquisition and integration charges | 159 |  |  | 4,463 |  |  | 977 | 7,804
Operating income | $ (769,608) |  |  | $ (718,732) |  |  | $ (2,294,003) | $ (2,035,831)

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- Definition The aggregate total costs related to selling a firm's product and services, as well as all other general and administrative expenses. Direct selling expenses (for example, credit, warranty, and advertising) are expenses that can be directly linked to the sale of specific products. Indirect selling expenses are expenses that cannot be directly linked to the sale of specific products, for example telephone expenses, Internet, and postal charges. General and administrative expenses include salaries of non-sales personnel, rent, utilities, communication, etc. + 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(4)) -Publisher FASB -URI https://asc.fasb.org/1943274/2147483621/220-10-S99-2 + Details
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