Employee Benefit Plans (Schedule of Pension Amounts Recognized in Other Comprehensive Income (Loss) (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Defined Benefit Plan Disclosure [Line Items]
Net actuarial gain arising during the period	$ (1,291)	$ (3,246)	$ 202
Current year prior service cost	131	59	(2,095)
Amortization of prior service credit	(129)	(258)	$ (373)
Pension Plan [Member]
Defined Benefit Plan Disclosure [Line Items]
Net actuarial gain arising during the period	(1,082)	(3,158)
Amortization of actuarial gain	(305)	(435)
Current year prior service cost	131	59
Amortization of prior service credit	163	168
Net settlement and curtailment	1	(17)
Other	(69)	(6)
Total recognized in other comprehensive (income) loss	(1,161)	(3,389)
Net recognized in net periodic benefit (income) cost and other comprehensive loss	$ (2,571)	$ (4,804)