Revenues - Receivables (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2022	Mar. 31, 2021	Dec. 31, 2021
Revenue from Contract with Customer [Abstract]
Accounts Receivable, after Allowance for Credit Loss, Current	$ 868		$ 825
Contract Liabilities in Other Current Liabilities	35		26
Contract with Customer, Liability, Revenue Recognized	10	$ 18
Accounts Receivable, Net of Allowance for Credit Losses of $35 at March 31, 2022 and $31 at December 31, 2021	868		825
Disaggregation of Revenue [Line Items]
Accounts Receivable, Net of Allowance for Credit Losses of $35 at March 31, 2022 and $31 at December 31, 2021	868		825
Equipment Rentals
Revenue from Contract with Customer [Abstract]
Accounts Receivable, Net of Allowance for Credit Losses of $35 at March 31, 2022 and $31 at December 31, 2021	33		30
Disaggregation of Revenue [Line Items]
Accounts Receivable, Net of Allowance for Credit Losses of $35 at March 31, 2022 and $31 at December 31, 2021	33		30
Product and Service, Other
Revenue from Contract with Customer [Abstract]
Accounts Receivable, Net of Allowance for Credit Losses of $35 at March 31, 2022 and $31 at December 31, 2021	835		795
Disaggregation of Revenue [Line Items]
Accounts Receivable, Net of Allowance for Credit Losses of $35 at March 31, 2022 and $31 at December 31, 2021	$ 835		$ 795