Customer Financing (Narrative) (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2022	Sep. 30, 2021	Sep. 30, 2022	Sep. 30, 2021	Dec. 31, 2021
Customer Financing [Line Items]
Financing Receivable, Nonaccrual	$ 406		$ 406
Financing Receivable, Nonaccrual, No Allowance					$ 378
Financing Receivable, Nonaccrual, Interest Income	4	$ 3	10	$ 14
Financing Receivable, before Allowance for Credit Loss	401		401		$ 412
Sales-Type and Direct Financing Leases, Lease Income	16	13	52	38
Operating Lease, Lease Income	18	16	50	53
Operating Lease, Variable Lease Income	1	1	6	6
Sales-type and Direct Financing Leases, Profit (Loss)	$ 4	$ 21	$ 16	$ 57
CCC Credit Rating
Customer Financing [Line Items]
Percentage of Credit Default Rates Applied to Customers	99.10%		99.10%
B Credit Rating
Customer Financing [Line Items]
Percentage of Credit Default Rates Applied to Customers	27.90%		27.90%
BB Credit Rating
Customer Financing [Line Items]
Percentage of Credit Default Rates Applied to Customers	3.00%		3.00%
BBB Credit Rating
Customer Financing [Line Items]
Percentage of Credit Default Rates Applied to Customers	0.10%		0.10%