Employee Benefit Plans (Schedule of Pension Amounts Recognized in Other Comprehensive Income (Loss) (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Defined Benefit Plan Disclosure [Line Items]
Net actuarial loss (gain) arising during the period	$ 971	$ (1,291)	$ (3,246)
Current year prior service cost	19	131	59
Amortization of prior service credit	568	(129)	$ (258)
Pension Plan [Member]
Defined Benefit Plan Disclosure [Line Items]
Net actuarial loss (gain) arising during the period	935	(1,082)
Amortization of actuarial gain	378	(305)
Current year prior service cost	19	131
Amortization of prior service credit	158	163
Net settlement and curtailment	(3)	1
Other	52	(69)
Total recognized in other comprehensive income (loss)	1,539	(1,161)
Net recognized in net periodic expense (income) and other comprehensive loss	$ (15)	$ (2,571)