Revenues - Receivables (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020
Revenue from Contract with Customer [Abstract]
Contract with Customer, Liability, Revenue Recognized	$ 32	$ 10
Disaggregation of Revenue [Line Items]
Total Accounts Receivables, Net	825	826
Contract Liabilities included in Other Current Liabilities	26	37
Product and Services
Disaggregation of Revenue [Line Items]
Receivables, Net, Current	795	792
Equipment Rentals
Disaggregation of Revenue [Line Items]
Receivables, Net, Current	$ 30	$ 34