Taxes - Tax Rate Reconciliation Narrative (Details) - USD ($) $ in Millions |
3 Months Ended | 12 Months Ended | ||
|---|---|---|---|---|
Mar. 31, 2020 |
Dec. 31, 2021 |
Dec. 31, 2020 |
Dec. 31, 2019 |
|
| Effective income tax rate reconciliation, additional disclosures | ||||
| U.S. corporate tax rate | 21.00% | 21.00% | 21.00% | |
| Effective tax rate (as a percent) | 2.60% | (52.90%) | 1.00% | |
| Intangible assets | $ 3,400 | $ 2,929 | $ 3,540 | |
| Increase (decrease) in tax provision from intra-entity sale of intellectual property and impact of U.S. tax reform | $ (900) | |||
| Tax benefit due to change in foreign tax law | $ 200 | |||