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Revenue Recognition - Revenue by Segment, Sales Channel and Product Category (Details) - USD ($) $ in Millions | 3 Months Ended | 6 Months Ended
--- | --- | ---
Jun. 30, 2025 | Jun. 30, 2024 | Jun. 30, 2025 | Jun. 30, 2024
Disaggregation of Revenue [Line Items] |  |  |  |
Total Revenue | $ 3,092 | $ 3,268 | $ 6,274 | $ 6,558
Adjustments for Non-ASC 606 Revenue | (223) | (250) | (494) | (479)
Total revenue from Contracts with Customers | 2,869 | 3,018 | 5,780 | 6,079
Business |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Total Revenue | 2,490 | 2,578 | 5,014 | 5,169
Mass Markets |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Total Revenue | 602 | 690 | 1,260 | 1,389
Operating Segments | Business |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Total Revenue | 2,490 | 2,578 | 5,014 | 5,169
Adjustments for Non-ASC 606 Revenue | (236) | (211) | (471) | (399)
Total revenue from Contracts with Customers | 2,254 | 2,367 | 4,543 | 4,770
Operating Segments | Mass Markets |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Total Revenue | 602 | 690 | 1,260 | 1,389
Adjustments for Non-ASC 606 Revenue | 13 | (39) | (23) | (80)
Total revenue from Contracts with Customers | 615 | 651 | 1,237 | 1,309
Operating Segments | Large Enterprise | Business |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Total Revenue | 732 | 749 | 1,469 | 1,514
Adjustments for Non-ASC 606 Revenue | (91) | (61) | (178) | (111)
Total revenue from Contracts with Customers | 641 | 688 | 1,291 | 1,403
Operating Segments | Mid-Market Enterprise | Business |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Total Revenue | 500 | 562 | 1,013 | 1,139
Adjustments for Non-ASC 606 Revenue | (6) | (8) | (14) | (16)
Total revenue from Contracts with Customers | 494 | 554 | 999 | 1,123
Operating Segments | Public Sector | Business |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Total Revenue | 486 | 449 | 969 | 870
Adjustments for Non-ASC 606 Revenue | (24) | (21) | (48) | (43)
Total revenue from Contracts with Customers | 462 | 428 | 921 | 827
Operating Segments | Wholesale | Business |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Total Revenue | 690 | 726 | 1,395 | 1,457
Adjustments for Non-ASC 606 Revenue | (114) | (120) | (229) | (227)
Total revenue from Contracts with Customers | 576 | 606 | 1,166 | 1,230
Operating Segments | International and Other | Business |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Total Revenue | 82 | 92 | 168 | 189
Adjustments for Non-ASC 606 Revenue | (1) | (1) | (2) | (2)
Total revenue from Contracts with Customers | 81 | 91 | 166 | 187
Operating Segments | Grow | Business |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Total Revenue | 1,127 | 1,063 | 2,263 | 2,122
Adjustments for Non-ASC 606 Revenue | (190) | (165) | (384) | (304)
Total revenue from Contracts with Customers | 937 | 898 | 1,879 | 1,818
Operating Segments | Grow | Large Enterprise | Business |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Total Revenue | 427 | 377 | 843 | 755
Adjustments for Non-ASC 606 Revenue | (91) | (61) | (178) | (110)
Total revenue from Contracts with Customers | 336 | 316 | 665 | 645
Operating Segments | Grow | Mid-Market Enterprise | Business |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Total Revenue | 260 | 257 | 519 | 513
Adjustments for Non-ASC 606 Revenue | (5) | (7) | (12) | (13)
Total revenue from Contracts with Customers | 255 | 250 | 507 | 500
Operating Segments | Grow | Public Sector | Business |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Total Revenue | 140 | 128 | 299 | 253
Adjustments for Non-ASC 606 Revenue | (24) | (20) | (48) | (41)
Total revenue from Contracts with Customers | 116 | 108 | 251 | 212
Operating Segments | Grow | Wholesale | Business |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Total Revenue | 262 | 263 | 527 | 523
Adjustments for Non-ASC 606 Revenue | (69) | (76) | (144) | (138)
Total revenue from Contracts with Customers | 193 | 187 | 383 | 385
Operating Segments | Grow | International and Other | Business |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Total Revenue | 38 | 38 | 75 | 78
Adjustments for Non-ASC 606 Revenue | (1) | (1) | (2) | (2)
Total revenue from Contracts with Customers | 37 | 37 | 73 | 76
Operating Segments | Nurture | Business |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Total Revenue | 634 | 750 | 1,300 | 1,526
Adjustments for Non-ASC 606 Revenue | (6) | (7) | (12) | (14)
Total revenue from Contracts with Customers | 628 | 743 | 1,288 | 1,512
Operating Segments | Nurture | Large Enterprise | Business |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Total Revenue | 192 | 235 | 395 | 476
Adjustments for Non-ASC 606 Revenue | 0 | 0 | 0 | 0
Total revenue from Contracts with Customers | 192 | 235 | 395 | 476
Operating Segments | Nurture | Mid-Market Enterprise | Business |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Total Revenue | 154 | 200 | 319 | 413
Adjustments for Non-ASC 606 Revenue | 0 | 0 | 0 | 0
Total revenue from Contracts with Customers | 154 | 200 | 319 | 413
Operating Segments | Nurture | Public Sector | Business |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Total Revenue | 83 | 88 | 167 | 176
Adjustments for Non-ASC 606 Revenue | 0 | 0 | 0 | 0
Total revenue from Contracts with Customers | 83 | 88 | 167 | 176
Operating Segments | Nurture | Wholesale | Business |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Total Revenue | 170 | 186 | 347 | 378
Adjustments for Non-ASC 606 Revenue | (6) | (7) | (12) | (14)
Total revenue from Contracts with Customers | 164 | 179 | 335 | 364
Operating Segments | Nurture | International and Other | Business |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Total Revenue | 35 | 41 | 72 | 83
Adjustments for Non-ASC 606 Revenue | 0 | 0 | 0 | 0
Total revenue from Contracts with Customers | 35 | 41 | 72 | 83
Operating Segments | Harvest | Business |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Total Revenue | 554 | 568 | 1,088 | 1,150
Adjustments for Non-ASC 606 Revenue | (40) | (39) | (75) | (79)
Total revenue from Contracts with Customers | 514 | 529 | 1,013 | 1,071
Operating Segments | Harvest | Large Enterprise | Business |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Total Revenue | 75 | 96 | 154 | 199
Adjustments for Non-ASC 606 Revenue | 0 | 0 | 0 | 0
Total revenue from Contracts with Customers | 75 | 96 | 154 | 199
Operating Segments | Harvest | Mid-Market Enterprise | Business |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Total Revenue | 77 | 95 | 156 | 193
Adjustments for Non-ASC 606 Revenue | (1) | (1) | (2) | (2)
Total revenue from Contracts with Customers | 76 | 94 | 154 | 191
Operating Segments | Harvest | Public Sector | Business |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Total Revenue | 137 | 92 | 245 | 186
Adjustments for Non-ASC 606 Revenue | 0 | (1) | 0 | (2)
Total revenue from Contracts with Customers | 137 | 91 | 245 | 184
Operating Segments | Harvest | Wholesale | Business |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Total Revenue | 258 | 275 | 518 | 551
Adjustments for Non-ASC 606 Revenue | (39) | (37) | (73) | (75)
Total revenue from Contracts with Customers | 219 | 238 | 445 | 476
Operating Segments | Harvest | International and Other | Business |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Total Revenue | 7 | 10 | 15 | 21
Adjustments for Non-ASC 606 Revenue | 0 | 0 | 0 | 0
Total revenue from Contracts with Customers | 7 | 10 | 15 | 21
Operating Segments | Other | Business |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Total Revenue | 175 | 197 | 363 | 371
Adjustments for Non-ASC 606 Revenue | 0 | 0 | 0 | (2)
Total revenue from Contracts with Customers | 175 | 197 | 363 | 369
Operating Segments | Other | Large Enterprise | Business |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Total Revenue | 38 | 41 | 77 | 84
Adjustments for Non-ASC 606 Revenue | 0 | 0 | 0 | (1)
Total revenue from Contracts with Customers | 38 | 41 | 77 | 83
Operating Segments | Other | Mid-Market Enterprise | Business |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Total Revenue | 9 | 10 | 19 | 20
Adjustments for Non-ASC 606 Revenue | 0 | 0 | 0 | (1)
Total revenue from Contracts with Customers | 9 | 10 | 19 | 19
Operating Segments | Other | Public Sector | Business |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Total Revenue | 126 | 141 | 258 | 255
Adjustments for Non-ASC 606 Revenue | 0 | 0 | 0 | 0
Total revenue from Contracts with Customers | 126 | 141 | 258 | 255
Operating Segments | Other | Wholesale | Business |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Total Revenue | 0 | 2 | 3 | 5
Adjustments for Non-ASC 606 Revenue | 0 | 0 | 0 | 0
Total revenue from Contracts with Customers | 0 | 2 | 3 | 5
Operating Segments | Other | International and Other | Business |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Total Revenue | 2 | 3 | 6 | 7
Adjustments for Non-ASC 606 Revenue | 0 | 0 | 0 | 0
Total revenue from Contracts with Customers | 2 | 3 | 6 | 7
Operating Segments | Fiber Broadband | Mass Markets |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Total Revenue | 217 | 181 | 426 | 351
Adjustments for Non-ASC 606 Revenue | (3) | (3) | (6) | (7)
Total revenue from Contracts with Customers | 214 | 178 | 420 | 344
Operating Segments | Other Broadband | Mass Markets |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Total Revenue | 245 | 298 | 502 | 613
Adjustments for Non-ASC 606 Revenue | (24) | (27) | (48) | (55)
Total revenue from Contracts with Customers | 221 | 271 | 454 | 558
Operating Segments | Voice and Other | Mass Markets |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Total Revenue | 140 | 211 | 332 | 425
Adjustments for Non-ASC 606 Revenue | 40 | (9) | 31 | (18)
Total revenue from Contracts with Customers | $ 180 | $ 202 | $ 363 | $ 407

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