Employee Benefits - Plan Assets, Additional Information (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Defined Benefit Plan Disclosure [Line Items]
Commingled funds, redemption notice period (in days)		180 days
Return on plan assets		$ 255	$ (987)
Expected return on plan assets		287	329
Difference between the actual and expected returns on pension and post-retirement plan assets		(32)	$ (1,300)
Defined Benefit Plan, Net Periodic Benefit (Cost) Credit, Expected Return (Loss), Statement of Income or Comprehensive Income [Extensible Enumeration]			Other (expense) income, net
Post-Retirement Benefit Plans
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets (liabilities)		$ 1	$ 5	$ 5
Expected long-term rate of return on plan assets		3.00%	4.00%	4.00%
Combined Pension Plan
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets (liabilities)		$ 4,476	$ 4,715	$ 8,531	$ 10,546
Expected long-term rate of return on plan assets		6.50%	5.50%	5.50%
Expected long-term rate of return on plan assets before administrative expenses		6.50%
Return on plan assets		$ 255	$ (987)	$ 422
Expected return on plan assets		$ 287	$ 385	$ 535
Combined Pension Plan | Forecast
Defined Benefit Plan Disclosure [Line Items]
Expected long-term rate of return on plan assets	7.00%
Combined Pension Plan | Debt Security
Defined Benefit Plan Disclosure [Line Items]
Plan assets, target allocation, percentage		50.00%
Combined Pension Plan | Derivatives
Defined Benefit Plan Disclosure [Line Items]
Plan assets, target allocation, percentage		50.00%