Revenue Recognition (Deferred Contract Acquisition and Fulfillment Costs) (Details) - USD ($) $ in Millions |
9 Months Ended | ||
|---|---|---|---|
Sep. 30, 2024 |
Sep. 30, 2023 |
Dec. 31, 2023 |
|
| Deferred Acquisition Costs | |||
| Capitalized Contract Cost, Net [Abstract] | |||
| Total deferred costs | $ 7,259 | $ 7,310 | |
| Deferred cost amortization | 2,733 | $ 2,568 | |
| Deferred Acquisition Costs | Prepaid and other current assets | |||
| Capitalized Contract Cost, Net [Abstract] | |||
| Total deferred costs | 3,185 | 3,233 | |
| Deferred Acquisition Costs | Other Assets | |||
| Capitalized Contract Cost, Net [Abstract] | |||
| Total deferred costs | 4,074 | 4,077 | |
| Deferred Fulfillment Costs | |||
| Capitalized Contract Cost, Net [Abstract] | |||
| Total deferred costs | 5,554 | 6,183 | |
| Deferred cost amortization | 1,916 | $ 2,031 | |
| Deferred Fulfillment Costs | Prepaid and other current assets | |||
| Capitalized Contract Cost, Net [Abstract] | |||
| Total deferred costs | 2,155 | 2,340 | |
| Deferred Fulfillment Costs | Other Assets | |||
| Capitalized Contract Cost, Net [Abstract] | |||
| Total deferred costs | $ 3,399 | $ 3,843 | |