v3.20.4

Segment Information (Intersegment Assets, Equity Affiliates Investments and Capital Expenditures Details) (Details) - USD ($) $ in Millions | 12 Months Ended
--- | ---
Dec. 31, 2020 | Dec. 31, 2019 | Dec. 31, 2018
Segment Reporting Information [Line Items] |  |  |
Assets | $ 525,761 | $ 551,669 |
Investments in Equity Method Investees | 1,780 | 3,695 | $ 6,245
Capital Expenditures | 15,675 | 19,635 | $ 21,251
Corporate and eliminations |  |  |
Segment Reporting Information [Line Items] |  |  |
Assets | (163,755) | (133,681) |
Investments in Equity Method Investees | 67 | 34 |
Capital Expenditures | 161 | 263 |
Communications | Operating Segments |  |  |
Segment Reporting Information [Line Items] |  |  |
Assets | 522,758 | 521,252 |
Investments in Equity Method Investees | 0 | 0 |
Capital Expenditures | 14,107 | 17,410 |
WarnerMedia | Operating Segments |  |  |
Segment Reporting Information [Line Items] |  |  |
Assets | 150,947 | 143,492 |
Investments in Equity Method Investees | 1,123 | 3,011 |
Capital Expenditures | 699 | 1,205 |
Latin America | Operating Segments |  |  |
Segment Reporting Information [Line Items] |  |  |
Assets | 15,811 | 20,606 |
Investments in Equity Method Investees | 590 | 650 |
Capital Expenditures | $ 708 | $ 757 |

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