Leases Lease Cost (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Leases [Abstract]
Operating Lease, Cost	$ 390	$ 356	$ 336
Short-term Lease, Cost	126	127	117
Lease, Cost	516	483	453
Operating Lease, Payments	374	339	325
Right-of-Use Asset Obtained in Exchange for Operating Lease Liability	$ 327	$ 357	$ 197
Operating Lease, Weighted Average Remaining Lease Term	7 years	7 years
Operating Lease, Weighted Average Discount Rate, Percent	4.10%	3.70%