v3.24.0.1
Employee Compensation and Benefit Plans - Pension Plan (Details) - USD ($)
$ in Millions
12 Months Ended
Dec. 31, 2023
Dec. 31, 2022
Defined Benefit Plan, Plan Assets, Allocation [Line Items]    
Expected long-term rate of return on plan assets 7.00% 5.00%
Actual rate of return on plan assets during period 11.00% (14.00%)
Expected long-term rate of return on investments 7.00%  
Interest on projected benefit obligations $ 86 $ 65
Amortization of actuarial gain (59) 0
Expected return on pension plan assets (97) (71)
Net pension benefit $ (70) $ (6)
Percent at quoted price 17.00% 17.00%
Percent at similar assets 79.00% 79.00%
Percent supported at unobservable inputs 4.00% 4.00%
Postretirement benefit plan assets $ 1,300 $ 1,200
Estimated fair value net assets 10  
Projected benefit obligations 1,600 1,600
Underfunded plan $ 350 $ 342
Discount rate 5.00% 6.00%
Contributions to benefit plan $ 32 $ 37
Expected future contributions 52  
Expected payment, year one 104  
Expected payment, years two and three 215  
Expected payment, years four and five 223  
Expected payment, thereafter $ 571  
Defined Benefit Plan, Net Periodic Benefit Cost (Credit), Interest Cost, Statement of Income or Comprehensive Income [Extensible Enumeration] Other income (expense), net Other income (expense), net
Defined Benefit Plan, Net Periodic Benefit Cost (Credit) Excluding Service Cost, Statement of Income or Comprehensive Income [Extensible Enumeration] Other income (expense), net Other income (expense), net
Defined Benefit Plan, Equity Securities, US    
Defined Benefit Plan, Plan Assets, Allocation [Line Items]    
Target allocation, percentage 48.00%  
Fixed Income Securities    
Defined Benefit Plan, Plan Assets, Allocation [Line Items]    
Target allocation, percentage 35.00%  
Defined Benefit Plan, Real Estate    
Defined Benefit Plan, Plan Assets, Allocation [Line Items]    
Target allocation, percentage 17.00%