Revenue (Narrative) (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Revenue from Contract with Customer [Abstract]
Operating-type lease and sales-type lease, revenues	$ 488	$ 483	$ 473
Contract with customer, asset, net	90	75
Contract with customer, liability	1,900	1,800
Contract with customer, liability, revenue recognized	$ 1,500	$ 1,100