Guarantees - Schedule of Maximum Potential Exposure (Details) - USD ($) $ in Millions	Dec. 31, 2021	Dec. 31, 2020
Guarantor Obligations
Under 1 Year	$ 4,333
1-3 Years	56
3-5 Years	24
Over 5 Years	189
Guarantees by Remaining Maturity, Total	4,602	$ 1,746
Letters of credit and surety bonds
Guarantor Obligations
Under 1 Year	4,064
1-3 Years	31
3-5 Years	0
Over 5 Years	0
Guarantees by Remaining Maturity, Total	4,095	1,153
Asset sales guarantee obligations
Guarantor Obligations
Under 1 Year	269
1-3 Years	25
3-5 Years	24
Over 5 Years	96
Guarantees by Remaining Maturity, Total	414	506
Other guarantees
Guarantor Obligations
Under 1 Year	0
1-3 Years	0
3-5 Years	0
Over 5 Years	93
Guarantees by Remaining Maturity, Total	$ 93	$ 87