Contingencies and Certain Commitments (Certain Commitments and Contingent Consideration for Acquisitions) (Details) - USD ($) $ in Millions |
12 Months Ended | |
|---|---|---|
Dec. 31, 2020 |
Dec. 31, 2019 |
|
| Commitments and Contingencies Disclosure [Abstract] | ||
| Long-term purchase commitment, amount | $ 3,800 | |
| Fair value of contingent consideration | 689 | $ 711 |
| Contingent consideration liability, current | 123 | 160 |
| Contingent consideration liability, noncurrent | $ 566 | $ 551 |
| X | ||||||||||
- Definition Amount of liability recognized arising from contingent consideration in a business combination. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
|
| X | ||||||||||
- Definition Amount of liability recognized arising from contingent consideration in a business combination, expected to be settled within one year or the normal operating cycle, if longer. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
|
| X | ||||||||||
- Definition Amount of liability recognized arising from contingent consideration in a business combination, expected to be settled beyond one year or the normal operating cycle, if longer. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
|
| X | ||||||||||
- References No definition available.
|
| X | ||||||||||
- Definition The minimum amount the entity agreed to spend under the long-term purchase commitment. No definition available.
|