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Revenue Recognition - Revenue by Segment, Sales Channel and Product Category (Details) - USD ($) $ in Millions | 3 Months Ended | 9 Months Ended
--- | --- | ---
Sep. 30, 2025 | Sep. 30, 2024 | Sep. 30, 2025 | Sep. 30, 2024
Disaggregation of Revenue [Line Items] |  |  |  |
Total Revenue | $ 3,087 | $ 3,221 | $ 9,361 | $ 9,779
Adjustments for Non-ASC 606 Revenue | (281) | (254) | (775) | (733)
Total revenue from Contracts with Customers | 2,806 | 2,967 | 8,586 | 9,046
Business |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Total Revenue | 2,456 | 2,537 | 7,470 | 7,706
Mass Markets |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Total Revenue | 631 | 684 | 1,891 | 2,073
Operating Segments | Business |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Total Revenue | 2,456 | 2,537 | 7,470 | 7,706
Adjustments for Non-ASC 606 Revenue | (248) | (221) | (719) | (620)
Total revenue from Contracts with Customers | 2,208 | 2,316 | 6,751 | 7,086
Operating Segments | Mass Markets |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Total Revenue | 631 | 684 | 1,891 | 2,073
Adjustments for Non-ASC 606 Revenue | (33) | (33) | (56) | (113)
Total revenue from Contracts with Customers | 598 | 651 | 1,835 | 1,960
Operating Segments | Large Enterprise | Business |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Total Revenue | 752 | 761 | 2,221 | 2,275
Adjustments for Non-ASC 606 Revenue | (101) | (73) | (279) | (184)
Total revenue from Contracts with Customers | 651 | 688 | 1,942 | 2,091
Operating Segments | Mid-Market Enterprise | Business |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Total Revenue | 488 | 542 | 1,501 | 1,681
Adjustments for Non-ASC 606 Revenue | (8) | (11) | (22) | (27)
Total revenue from Contracts with Customers | 480 | 531 | 1,479 | 1,654
Operating Segments | Public Sector | Business |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Total Revenue | 478 | 430 | 1,447 | 1,300
Adjustments for Non-ASC 606 Revenue | (25) | (22) | (73) | (65)
Total revenue from Contracts with Customers | 453 | 408 | 1,374 | 1,235
Operating Segments | Wholesale | Business |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Total Revenue | 658 | 712 | 2,053 | 2,169
Adjustments for Non-ASC 606 Revenue | (113) | (114) | (342) | (341)
Total revenue from Contracts with Customers | 545 | 598 | 1,711 | 1,828
Operating Segments | International and Other | Business |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Total Revenue | 80 | 92 | 248 | 281
Adjustments for Non-ASC 606 Revenue | (1) | (1) | (3) | (3)
Total revenue from Contracts with Customers | 79 | 91 | 245 | 278
Operating Segments | Grow | Business |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Total Revenue | 1,160 | 1,077 | 3,423 | 3,199
Adjustments for Non-ASC 606 Revenue | (207) | (174) | (591) | (478)
Total revenue from Contracts with Customers | 953 | 903 | 2,832 | 2,721
Operating Segments | Grow | Large Enterprise | Business |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Total Revenue | 451 | 390 | 1,294 | 1,145
Adjustments for Non-ASC 606 Revenue | (101) | (73) | (279) | (183)
Total revenue from Contracts with Customers | 350 | 317 | 1,015 | 962
Operating Segments | Grow | Mid-Market Enterprise | Business |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Total Revenue | 260 | 257 | 779 | 770
Adjustments for Non-ASC 606 Revenue | (7) | (6) | (19) | (19)
Total revenue from Contracts with Customers | 253 | 251 | 760 | 751
Operating Segments | Grow | Public Sector | Business |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Total Revenue | 151 | 133 | 450 | 386
Adjustments for Non-ASC 606 Revenue | (25) | (21) | (73) | (62)
Total revenue from Contracts with Customers | 126 | 112 | 377 | 324
Operating Segments | Grow | Wholesale | Business |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Total Revenue | 261 | 259 | 788 | 782
Adjustments for Non-ASC 606 Revenue | (73) | (73) | (217) | (211)
Total revenue from Contracts with Customers | 188 | 186 | 571 | 571
Operating Segments | Grow | International and Other | Business |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Total Revenue | 37 | 38 | 112 | 116
Adjustments for Non-ASC 606 Revenue | (1) | (1) | (3) | (3)
Total revenue from Contracts with Customers | 36 | 37 | 109 | 113
Operating Segments | Nurture | Business |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Total Revenue | 611 | 729 | 1,911 | 2,255
Adjustments for Non-ASC 606 Revenue | (6) | (6) | (18) | (20)
Total revenue from Contracts with Customers | 605 | 723 | 1,893 | 2,235
Operating Segments | Nurture | Large Enterprise | Business |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Total Revenue | 192 | 234 | 587 | 710
Adjustments for Non-ASC 606 Revenue | 0 | 0 | 0 | 0
Total revenue from Contracts with Customers | 192 | 234 | 587 | 710
Operating Segments | Nurture | Mid-Market Enterprise | Business |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Total Revenue | 146 | 186 | 465 | 599
Adjustments for Non-ASC 606 Revenue | 0 | 0 | 0 | 0
Total revenue from Contracts with Customers | 146 | 186 | 465 | 599
Operating Segments | Nurture | Public Sector | Business |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Total Revenue | 79 | 87 | 246 | 263
Adjustments for Non-ASC 606 Revenue | 0 | 0 | 0 | 0
Total revenue from Contracts with Customers | 79 | 87 | 246 | 263
Operating Segments | Nurture | Wholesale | Business |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Total Revenue | 160 | 183 | 507 | 561
Adjustments for Non-ASC 606 Revenue | (6) | (6) | (18) | (20)
Total revenue from Contracts with Customers | 154 | 177 | 489 | 541
Operating Segments | Nurture | International and Other | Business |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Total Revenue | 34 | 39 | 106 | 122
Adjustments for Non-ASC 606 Revenue | 0 | 0 | 0 | 0
Total revenue from Contracts with Customers | 34 | 39 | 106 | 122
Operating Segments | Harvest | Business |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Total Revenue | 497 | 550 | 1,585 | 1,700
Adjustments for Non-ASC 606 Revenue | (35) | (37) | (110) | (116)
Total revenue from Contracts with Customers | 462 | 513 | 1,475 | 1,584
Operating Segments | Harvest | Large Enterprise | Business |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Total Revenue | 72 | 94 | 226 | 293
Adjustments for Non-ASC 606 Revenue | 0 | 0 | 0 | 0
Total revenue from Contracts with Customers | 72 | 94 | 226 | 293
Operating Segments | Harvest | Mid-Market Enterprise | Business |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Total Revenue | 71 | 89 | 227 | 282
Adjustments for Non-ASC 606 Revenue | (1) | (1) | (3) | (3)
Total revenue from Contracts with Customers | 70 | 88 | 224 | 279
Operating Segments | Harvest | Public Sector | Business |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Total Revenue | 112 | 87 | 357 | 273
Adjustments for Non-ASC 606 Revenue | 0 | (1) | 0 | (3)
Total revenue from Contracts with Customers | 112 | 86 | 357 | 270
Operating Segments | Harvest | Wholesale | Business |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Total Revenue | 236 | 268 | 754 | 819
Adjustments for Non-ASC 606 Revenue | (34) | (35) | (107) | (110)
Total revenue from Contracts with Customers | 202 | 233 | 647 | 709
Operating Segments | Harvest | International and Other | Business |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Total Revenue | 6 | 12 | 21 | 33
Adjustments for Non-ASC 606 Revenue | 0 | 0 | 0 | 0
Total revenue from Contracts with Customers | 6 | 12 | 21 | 33
Operating Segments | Other | Business |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Total Revenue | 188 | 181 | 551 | 552
Adjustments for Non-ASC 606 Revenue | 0 | (4) | 0 | (6)
Total revenue from Contracts with Customers | 188 | 177 | 551 | 546
Operating Segments | Other | Large Enterprise | Business |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Total Revenue | 37 | 43 | 114 | 127
Adjustments for Non-ASC 606 Revenue | 0 | 0 | 0 | (1)
Total revenue from Contracts with Customers | 37 | 43 | 114 | 126
Operating Segments | Other | Mid-Market Enterprise | Business |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Total Revenue | 11 | 10 | 30 | 30
Adjustments for Non-ASC 606 Revenue | 0 | (4) | 0 | (5)
Total revenue from Contracts with Customers | 11 | 6 | 30 | 25
Operating Segments | Other | Public Sector | Business |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Total Revenue | 136 | 123 | 394 | 378
Adjustments for Non-ASC 606 Revenue | 0 | 0 | 0 | 0
Total revenue from Contracts with Customers | 136 | 123 | 394 | 378
Operating Segments | Other | Wholesale | Business |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Total Revenue | 1 | 2 | 4 | 7
Adjustments for Non-ASC 606 Revenue | 0 | 0 | 0 | 0
Total revenue from Contracts with Customers | 1 | 2 | 4 | 7
Operating Segments | Other | International and Other | Business |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Total Revenue | 3 | 3 | 9 | 10
Adjustments for Non-ASC 606 Revenue | 0 | 0 | 0 | 0
Total revenue from Contracts with Customers | 3 | 3 | 9 | 10
Operating Segments | Fiber Broadband | Mass Markets |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Total Revenue | 225 | 190 | 651 | 541
Adjustments for Non-ASC 606 Revenue | (3) | (3) | (9) | (10)
Total revenue from Contracts with Customers | 222 | 187 | 642 | 531
Operating Segments | Other Broadband | Mass Markets |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Total Revenue | 230 | 283 | 732 | 896
Adjustments for Non-ASC 606 Revenue | (23) | (25) | (71) | (80)
Total revenue from Contracts with Customers | 207 | 258 | 661 | 816
Operating Segments | Voice and Other | Mass Markets |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Total Revenue | 176 | 211 | 508 | 636
Adjustments for Non-ASC 606 Revenue | (7) | (5) | 24 | (23)
Total revenue from Contracts with Customers | $ 169 | $ 206 | $ 532 | $ 613

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