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v3.25.2

Segment Information - Segment Results and Operating Revenue (Details) - USD ($) $ in Millions | 3 Months Ended | 6 Months Ended
--- | --- | ---
Jun. 30, 2025 | Jun. 30, 2024 | Jun. 30, 2025 | Jun. 30, 2024
Operating revenues by products and services |  |  |  |
Segment revenue | $ 3,092 | $ 3,268 | $ 6,274 | $ 6,558
Cost of services and products | 1,624 | 1,653 | 3,311 | 3,305
Business |  |  |  |
Operating revenues by products and services |  |  |  |
Segment revenue | 2,490 | 2,578 | 5,014 | 5,169
Cost of services and products | 691 | 761 | 1,429 | 1,499
Headcount costs | 294 | 304 | 580 | 648
Non-headcount costs | 353 | 349 | 687 | 690
Total segment expense | 1,338 | 1,414 | 2,696 | 2,837
Total segment adjusted EBITDA | 1,152 | 1,164 | 2,318 | 2,332
Mass Markets |  |  |  |
Operating revenues by products and services |  |  |  |
Segment revenue | 602 | 690 | 1,260 | 1,389
Cost of services and products | 13 | 20 | 27 | 37
Headcount costs | 142 | 155 | 292 | 322
Non-headcount costs | 130 | 139 | 243 | 271
Total segment expense | 285 | 314 | 562 | 630
Total segment adjusted EBITDA | $ 317 | $ 376 | $ 698 | $ 759

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