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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, 2022 | Sep. 30, 2021 | Sep. 30, 2022 | Sep. 30, 2021
Disaggregation of Revenue [Line Items] |  |  |  |
Total revenue | $ 4,390 | $ 4,887 | $ 13,678 | $ 14,840
Operating Segments |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Total revenue | 4,390 | 4,887 | 13,678 | 14,840
Adjustments for non-ASC 606 revenue | (331) | (472) | (1,099) | (1,417)
Total revenue from contracts with customers | 4,059 | 4,415 | 12,579 | 13,423
Operating Segments | Business |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Total revenue | 3,217 | 3,508 | 10,034 | 10,625
Adjustments for non-ASC 606 revenue | (246) | (273) | (794) | (820)
Total revenue from contracts with customers | 2,971 | 3,235 | 9,240 | 9,805
Operating Segments | Business | Compute and Application Services |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Total revenue | 399 | 431 | 1,279 | 1,297
Adjustments for non-ASC 606 revenue | (109) | (133) | (375) | (400)
Total revenue from contracts with customers | 290 | 298 | 904 | 897
Operating Segments | Business | IP and Data Services |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Total revenue | 1,417 | 1,543 | 4,434 | 4,670
Adjustments for non-ASC 606 revenue | (1) | (1) | (3) | (4)
Total revenue from contracts with customers | 1,416 | 1,542 | 4,431 | 4,666
Operating Segments | Business | Fiber Infrastructure |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Total revenue | 530 | 578 | 1,629 | 1,687
Adjustments for non-ASC 606 revenue | (74) | (76) | (227) | (228)
Total revenue from contracts with customers | 456 | 502 | 1,402 | 1,459
Operating Segments | Business | Voice and Other |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Total revenue | 871 | 956 | 2,692 | 2,971
Adjustments for non-ASC 606 revenue | (62) | (63) | (189) | (188)
Total revenue from contracts with customers | 809 | 893 | 2,503 | 2,783
Operating Segments | Business | International and Global Accounts ("IGAM") |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Total revenue | 853 | 1,027 | 2,848 | 3,058
Adjustments for non-ASC 606 revenue | (80) | (104) | (293) | (305)
Total revenue from contracts with customers | 773 | 923 | 2,555 | 2,753
Operating Segments | Business | International and Global Accounts ("IGAM") | Compute and Application Services |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Total revenue | 154 | 183 | 521 | 547
Adjustments for non-ASC 606 revenue | (47) | (71) | (191) | (210)
Total revenue from contracts with customers | 107 | 112 | 330 | 337
Operating Segments | Business | International and Global Accounts ("IGAM") | IP and Data Services |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Total revenue | 350 | 431 | 1,190 | 1,287
Adjustments for non-ASC 606 revenue | 0 | 0 | 0 | 0
Total revenue from contracts with customers | 350 | 431 | 1,190 | 1,287
Operating Segments | Business | International and Global Accounts ("IGAM") | Fiber Infrastructure |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Total revenue | 199 | 231 | 642 | 665
Adjustments for non-ASC 606 revenue | (33) | (33) | (102) | (95)
Total revenue from contracts with customers | 166 | 198 | 540 | 570
Operating Segments | Business | International and Global Accounts ("IGAM") | Voice and Other |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Total revenue | 150 | 182 | 495 | 559
Adjustments for non-ASC 606 revenue | 0 | 0 | 0 | 0
Total revenue from contracts with customers | 150 | 182 | 495 | 559
Operating Segments | Business | Large Enterprise |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Total revenue | 844 | 942 | 2,605 | 2,840
Adjustments for non-ASC 606 revenue | (27) | (26) | (80) | (83)
Total revenue from contracts with customers | 817 | 916 | 2,525 | 2,757
Operating Segments | Business | Large Enterprise | Compute and Application Services |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Total revenue | 148 | 172 | 473 | 515
Adjustments for non-ASC 606 revenue | (16) | (15) | (45) | (45)
Total revenue from contracts with customers | 132 | 157 | 428 | 470
Operating Segments | Business | Large Enterprise | IP and Data Services |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Total revenue | 378 | 394 | 1,151 | 1,192
Adjustments for non-ASC 606 revenue | 0 | 0 | 0 | 0
Total revenue from contracts with customers | 378 | 394 | 1,151 | 1,192
Operating Segments | Business | Large Enterprise | Fiber Infrastructure |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Total revenue | 117 | 143 | 359 | 403
Adjustments for non-ASC 606 revenue | (11) | (11) | (35) | (38)
Total revenue from contracts with customers | 106 | 132 | 324 | 365
Operating Segments | Business | Large Enterprise | Voice and Other |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Total revenue | 201 | 233 | 622 | 730
Adjustments for non-ASC 606 revenue | 0 | 0 | 0 | 0
Total revenue from contracts with customers | 201 | 233 | 622 | 730
Operating Segments | Business | Mid-Market Enterprise |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Total revenue | 618 | 648 | 1,880 | 2,002
Adjustments for non-ASC 606 revenue | (10) | (11) | (30) | (35)
Total revenue from contracts with customers | 608 | 637 | 1,850 | 1,967
Operating Segments | Business | Mid-Market Enterprise | Compute and Application Services |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Total revenue | 35 | 30 | 102 | 94
Adjustments for non-ASC 606 revenue | (7) | (8) | (21) | (25)
Total revenue from contracts with customers | 28 | 22 | 81 | 69
Operating Segments | Business | Mid-Market Enterprise | IP and Data Services |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Total revenue | 406 | 421 | 1,229 | 1,291
Adjustments for non-ASC 606 revenue | (1) | (1) | (3) | (4)
Total revenue from contracts with customers | 405 | 420 | 1,226 | 1,287
Operating Segments | Business | Mid-Market Enterprise | Fiber Infrastructure |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Total revenue | 49 | 50 | 148 | 156
Adjustments for non-ASC 606 revenue | (2) | (2) | (6) | (6)
Total revenue from contracts with customers | 47 | 48 | 142 | 150
Operating Segments | Business | Mid-Market Enterprise | Voice and Other |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Total revenue | 128 | 147 | 401 | 461
Adjustments for non-ASC 606 revenue | 0 | 0 | 0 | 0
Total revenue from contracts with customers | 128 | 147 | 401 | 461
Operating Segments | Business | Wholesale |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Total revenue | 902 | 891 | 2,701 | 2,725
Adjustments for non-ASC 606 revenue | (129) | (132) | (391) | (397)
Total revenue from contracts with customers | 773 | 759 | 2,310 | 2,328
Operating Segments | Business | Wholesale | Compute and Application Services |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Total revenue | 62 | 46 | 183 | 141
Adjustments for non-ASC 606 revenue | (39) | (39) | (118) | (120)
Total revenue from contracts with customers | 23 | 7 | 65 | 21
Operating Segments | Business | Wholesale | IP and Data Services |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Total revenue | 283 | 297 | 864 | 900
Adjustments for non-ASC 606 revenue | 0 | 0 | 0 | 0
Total revenue from contracts with customers | 283 | 297 | 864 | 900
Operating Segments | Business | Wholesale | Fiber Infrastructure |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Total revenue | 165 | 154 | 480 | 463
Adjustments for non-ASC 606 revenue | (28) | (30) | (84) | (89)
Total revenue from contracts with customers | 137 | 124 | 396 | 374
Operating Segments | Business | Wholesale | Voice and Other |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Total revenue | 392 | 394 | 1,174 | 1,221
Adjustments for non-ASC 606 revenue | (62) | (63) | (189) | (188)
Total revenue from contracts with customers | 330 | 331 | 985 | 1,033
Operating Segments | Mass Markets |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Total revenue | 1,173 | 1,379 | 3,644 | 4,215
Adjustments for non-ASC 606 revenue | (85) | (199) | (305) | (597)
Total revenue from contracts with customers | 1,088 | 1,180 | 3,339 | 3,618
Operating Segments | Mass Markets | Fiber Broadband |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Total revenue | 160 | 135 | 456 | 387
Adjustments for non-ASC 606 revenue | (4) | 0 | (14) | 0
Total revenue from contracts with customers | 156 | 135 | 442 | 387
Operating Segments | Mass Markets | Other Broadband |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Total revenue | 580 | 619 | 1,786 | 1,899
Adjustments for non-ASC 606 revenue | (55) | (56) | (166) | (166)
Total revenue from contracts with customers | 525 | 563 | 1,620 | 1,733
Operating Segments | Mass Markets | Voice and Other |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Total revenue | 433 | 625 | 1,402 | 1,929
Adjustments for non-ASC 606 revenue | (26) | (143) | (125) | (431)
Total revenue from contracts with customers | $ 407 | $ 482 | $ 1,277 | $ 1,498

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