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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, 2022 | Jun. 30, 2021 | Jun. 30, 2022 | Jun. 30, 2021
Disaggregation of Revenue [Line Items] |  |  |  |
Total revenue | $ 4,612 | $ 4,924 | $ 9,288 | $ 9,953
Operating Segments |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Total revenue | 4,612 | 4,924 | 9,288 | 9,953
Adjustments for non-ASC 606 revenue | (353) | (471) | (768) | (945)
Total revenue from contracts with customers | 4,259 | 4,453 | 8,520 | 9,008
Operating Segments | Business |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Total revenue | 3,416 | 3,522 | 6,817 | 7,117
Adjustments for non-ASC 606 revenue | (273) | (273) | (548) | (547)
Total revenue from contracts with customers | 3,143 | 3,249 | 6,269 | 6,570
Operating Segments | Business | Compute and Application Services |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Total revenue | 453 | 435 | 880 | 866
Adjustments for non-ASC 606 revenue | (132) | (135) | (266) | (267)
Total revenue from contracts with customers | 321 | 300 | 614 | 599
Operating Segments | Business | IP and Data Services |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Total revenue | 1,495 | 1,549 | 3,017 | 3,127
Adjustments for non-ASC 606 revenue | (1) | (2) | (2) | (3)
Total revenue from contracts with customers | 1,494 | 1,547 | 3,015 | 3,124
Operating Segments | Business | Fiber Infrastructure |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Total revenue | 564 | 552 | 1,099 | 1,109
Adjustments for non-ASC 606 revenue | (77) | (74) | (153) | (152)
Total revenue from contracts with customers | 487 | 478 | 946 | 957
Operating Segments | Business | Voice and Other |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Total revenue | 904 | 986 | 1,821 | 2,015
Adjustments for non-ASC 606 revenue | (63) | (62) | (127) | (125)
Total revenue from contracts with customers | 841 | 924 | 1,694 | 1,890
Operating Segments | Business | International and Global Accounts ("IGAM") |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Total revenue | 996 | 1,011 | 1,995 | 2,031
Adjustments for non-ASC 606 revenue | (106) | (102) | (213) | (201)
Total revenue from contracts with customers | 890 | 909 | 1,782 | 1,830
Operating Segments | Business | International and Global Accounts ("IGAM") | Compute and Application Services |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Total revenue | 184 | 181 | 367 | 364
Adjustments for non-ASC 606 revenue | (71) | (70) | (144) | (139)
Total revenue from contracts with customers | 113 | 111 | 223 | 225
Operating Segments | Business | International and Global Accounts ("IGAM") | IP and Data Services |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Total revenue | 417 | 427 | 840 | 856
Adjustments for non-ASC 606 revenue | 0 | 0 | 0 | 0
Total revenue from contracts with customers | 417 | 427 | 840 | 856
Operating Segments | Business | International and Global Accounts ("IGAM") | Fiber Infrastructure |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Total revenue | 224 | 217 | 443 | 434
Adjustments for non-ASC 606 revenue | (35) | (32) | (69) | (62)
Total revenue from contracts with customers | 189 | 185 | 374 | 372
Operating Segments | Business | International and Global Accounts ("IGAM") | Voice and Other |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Total revenue | 171 | 186 | 345 | 377
Adjustments for non-ASC 606 revenue | 0 | 0 | 0 | 0
Total revenue from contracts with customers | 171 | 186 | 345 | 377
Operating Segments | Business | Large Enterprise |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Total revenue | 884 | 945 | 1,761 | 1,898
Adjustments for non-ASC 606 revenue | (26) | (27) | (53) | (57)
Total revenue from contracts with customers | 858 | 918 | 1,708 | 1,841
Operating Segments | Business | Large Enterprise | Compute and Application Services |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Total revenue | 162 | 174 | 325 | 343
Adjustments for non-ASC 606 revenue | (15) | (15) | (29) | (30)
Total revenue from contracts with customers | 147 | 159 | 296 | 313
Operating Segments | Business | Large Enterprise | IP and Data Services |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Total revenue | 385 | 396 | 773 | 798
Adjustments for non-ASC 606 revenue | 0 | 0 | 0 | 0
Total revenue from contracts with customers | 385 | 396 | 773 | 798
Operating Segments | Business | Large Enterprise | Fiber Infrastructure |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Total revenue | 129 | 130 | 242 | 260
Adjustments for non-ASC 606 revenue | (11) | (12) | (24) | (27)
Total revenue from contracts with customers | 118 | 118 | 218 | 233
Operating Segments | Business | Large Enterprise | Voice and Other |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Total revenue | 208 | 245 | 421 | 497
Adjustments for non-ASC 606 revenue | 0 | 0 | 0 | 0
Total revenue from contracts with customers | 208 | 245 | 421 | 497
Operating Segments | Business | Mid-Market Enterprise |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Total revenue | 626 | 661 | 1,262 | 1,354
Adjustments for non-ASC 606 revenue | (10) | (13) | (20) | (24)
Total revenue from contracts with customers | 616 | 648 | 1,242 | 1,330
Operating Segments | Business | Mid-Market Enterprise | Compute and Application Services |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Total revenue | 34 | 32 | 67 | 64
Adjustments for non-ASC 606 revenue | (7) | (9) | (14) | (17)
Total revenue from contracts with customers | 27 | 23 | 53 | 47
Operating Segments | Business | Mid-Market Enterprise | IP and Data Services |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Total revenue | 408 | 428 | 823 | 870
Adjustments for non-ASC 606 revenue | (1) | (2) | (2) | (3)
Total revenue from contracts with customers | 407 | 426 | 821 | 867
Operating Segments | Business | Mid-Market Enterprise | Fiber Infrastructure |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Total revenue | 50 | 50 | 99 | 106
Adjustments for non-ASC 606 revenue | (2) | (2) | (4) | (4)
Total revenue from contracts with customers | 48 | 48 | 95 | 102
Operating Segments | Business | Mid-Market Enterprise | Voice and Other |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Total revenue | 134 | 151 | 273 | 314
Adjustments for non-ASC 606 revenue | 0 | 0 | 0 | 0
Total revenue from contracts with customers | 134 | 151 | 273 | 314
Operating Segments | Business | Wholesale |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Total revenue | 910 | 905 | 1,799 | 1,834
Adjustments for non-ASC 606 revenue | (131) | (131) | (262) | (265)
Total revenue from contracts with customers | 779 | 774 | 1,537 | 1,569
Operating Segments | Business | Wholesale | Compute and Application Services |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Total revenue | 73 | 48 | 121 | 95
Adjustments for non-ASC 606 revenue | (39) | (41) | (79) | (81)
Total revenue from contracts with customers | 34 | 7 | 42 | 14
Operating Segments | Business | Wholesale | IP and Data Services |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Total revenue | 285 | 298 | 581 | 603
Adjustments for non-ASC 606 revenue | 0 | 0 | 0 | 0
Total revenue from contracts with customers | 285 | 298 | 581 | 603
Operating Segments | Business | Wholesale | Fiber Infrastructure |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Total revenue | 161 | 155 | 315 | 309
Adjustments for non-ASC 606 revenue | (29) | (28) | (56) | (59)
Total revenue from contracts with customers | 132 | 127 | 259 | 250
Operating Segments | Business | Wholesale | Voice and Other |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Total revenue | 391 | 404 | 782 | 827
Adjustments for non-ASC 606 revenue | (63) | (62) | (127) | (125)
Total revenue from contracts with customers | 328 | 342 | 655 | 702
Operating Segments | Mass Markets |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Total revenue | 1,196 | 1,402 | 2,471 | 2,836
Adjustments for non-ASC 606 revenue | (80) | (198) | (220) | (398)
Total revenue from contracts with customers | 1,116 | 1,204 | 2,251 | 2,438
Operating Segments | Mass Markets | Fiber Broadband |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Total revenue | 151 | 130 | 296 | 252
Adjustments for non-ASC 606 revenue | (5) | 0 | (10) | 0
Total revenue from contracts with customers | 146 | 130 | 286 | 252
Operating Segments | Mass Markets | Other Broadband |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Total revenue | 596 | 632 | 1,206 | 1,280
Adjustments for non-ASC 606 revenue | (55) | (55) | (111) | (110)
Total revenue from contracts with customers | 541 | 577 | 1,095 | 1,170
Operating Segments | Mass Markets | Voice and Other |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Total revenue | 449 | 640 | 969 | 1,304
Adjustments for non-ASC 606 revenue | (20) | (143) | (99) | (288)
Total revenue from contracts with customers | $ 429 | $ 497 | $ 870 | $ 1,016

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