| **Leases - Schedule of Lease Assets and Liabilities (Details) - USD ($) $ in Millions** | Dec. 31, 2023                | Dec. 31, 2022                |
|-----------------------------------------------------------------------------------------|------------------------------|------------------------------|
| **Leases [Abstract]**                                                                   |                         |                         |
| ROU assets                                                                              | $ 2,924                      | $ 3,002                      |
| Lease liabilities (short-term)                                                          | 527                          | 620                          |
| Lease liabilities (long-term)                                                           | $ 2,626                      | $ 2,597                      |
| ROU assets, statement of financial position                                             | Other Assets, Noncurrent     | Other Assets, Noncurrent     |
| Lease liabilities (short-term), statement of financial position                         | Other current liabilities    | Other current liabilities    |
| Lease liabilities (long-term), statement of financial position                          | Other noncurrent liabilities | Other noncurrent liabilities |

| X                                                                                                                                                                                        |
|------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| - References
No definition available.
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| X                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                               |
|-----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| - Definition
Present value of lessee's discounted obligation for lease payments from operating lease, classified as current.
+ References
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| X                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                 |
|-----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| - Definition
Indicates line item in statement of financial position that includes current operating lease liability.
+ References
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| X                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                     |
|-----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| - Definition
Present value of lessee's discounted obligation for lease payments from operating lease, classified as noncurrent.
+ References
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| X                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                       |
|-----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| - Definition
Indicates line item in statement of financial position that includes noncurrent operating lease liability.
+ References
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| X                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                     |
|-----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| - Definition
Amount of lessee's right to use underlying asset under operating lease.
+ References
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| X                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                 |
|-----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| - Definition
Indicates line item in statement of financial position that includes operating lease right-of-use asset.
+ References
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