Employee Benefit Plans - Deferred Compensation Plans (Details) - Deferred Compensation Plans - USD ($) $ in Millions |
12 Months Ended | ||
|---|---|---|---|
Dec. 31, 2023 |
Dec. 31, 2022 |
Dec. 31, 2021 |
|
| Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items] | |||
| Benefit obligation | $ 4,507 | $ 4,158 | $ 4,002 |
| Interest expense | $ 341 | $ 272 | $ 265 |