Benefit Plans - Narrative (Details) - USD ($) $ in Millions	3 Months Ended	12 Months Ended
	Mar. 31, 2022	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Defined Benefit Plan, Number of Highest Consecutive Years of Earnings			5 years
Defined benefit plan, final years of employment subject to earnings test			10 years
Expected long-term rate of return on plan assets			6.70%	6.90%	7.00%
Defined Contribution Plan, Maximum Annual Contributions Per Employee, Percent			50.00%
Defined Contribution Plan, Minimum Age of Employees Covered			21 years
Defined Contribution Plan, Employer Matching Contribution, Percent of Employees' Compensation, Maximum			6.00%
Defined Contribution Plan, Employer Contribution Expense			$ 272	$ 272	$ 152
Fair value of plan assets			$ 15,824	$ 14,352
Weighted average assumed discount rate			4.50%	3.50%
Alternative Investments [Member]
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Fair value of plan assets			$ 513	$ 280
Subsequent Event
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Discretionary contributions	$ 351
Forecast
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Expected long-term rate of return on plan assets		6.50%
Qualified Plan
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Fair value of plan assets			$ 16,399	$ 14,635	$ 12,398
Weighted average assumed discount rate			3.18%	2.94%