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Employee Benefit Plans (Benefit Payments) (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Defined Benefit Plan Estimated Future Benefit Payments [Abstract]
Compensation cost	$ 304	$ 159	$ 274
Tax benefit	76	$ 40	$ 71
Pension Plans Defined Benefit [Member] \| U.S. [Member]
Defined Benefit Plan Estimated Future Benefit Payments [Abstract]
2022	369
2023	185
2024	176
2025	154
2026	144
2027-2031	557
Pension Plans Defined Benefit [Member] \| Foreign Pension Plans, Defined Benefit [Member]
Defined Benefit Plan Estimated Future Benefit Payments [Abstract]
2022	152
2023	152
2024	158
2025	162
2026	164
2027-2031	893
Other Postretirement Benefit Plans, Defined Benefit [Member]
Defined Benefit Plan Estimated Future Benefit Payments [Abstract]
2022	21
2023	18
2024	15
2025	14
2026	12
2027-2031	$ 44