Leases Total Lease Cost (Details 1) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Leases [Abstract]
Operating lease cost	$ 315	$ 320	$ 318
Variable lease cost	31	28	11
Short-term lease cost	80	93	75
Total lease cost	$ 426	$ 441	$ 404