Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

No definition available.

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- Definition

The total amount of revenue recognized for the period from operating leases, including minimum lease revenue, contingent revenue, percentage revenue and sublease revenue.

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Amount, including tax collected from customer, of revenue from satisfaction of performance obligation by transferring promised good or service to customer. Tax collected from customer is tax assessed by governmental authority that is both imposed on and concurrent with specific revenue-producing transaction, including, but not limited to, sales, use, value-added and excise.

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- Definition

Amount of revenue recognized from goods sold, services rendered, insurance premiums, or other activities that constitute an earning process. Includes, but is not limited to, investment and interest income before deduction of interest expense when recognized as a component of revenue, and sales and trading gain (loss).

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Revenues - Geographic Areas (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2019	Jun. 30, 2018	Jun. 30, 2019	Jun. 30, 2018
Disaggregation of Revenue [Line Items]
Total Product and Service Revenue before Rental Revenues		$ 1,335	$ 2,493	$ 2,676
Rental Revenues	$ 84	113	162	195
Total Revenues	1,309	1,448	2,655	2,871
Western Hemisphere
Disaggregation of Revenue [Line Items]
Total Product and Service Revenue before Rental Revenues	659	684	1,328	1,384
Western Hemisphere \| United States
Disaggregation of Revenue [Line Items]
Total Product and Service Revenue before Rental Revenues	324	346	653	691
Western Hemisphere \| Latin America
Disaggregation of Revenue [Line Items]
Total Product and Service Revenue before Rental Revenues	284	270	542	496
Western Hemisphere \| Canada
Disaggregation of Revenue [Line Items]
Total Product and Service Revenue before Rental Revenues	51	68	133	197
Eastern Hemisphere
Disaggregation of Revenue [Line Items]
Total Product and Service Revenue before Rental Revenues	566	651	1,165	1,292
Eastern Hemisphere \| Middle East and North Africa
Disaggregation of Revenue [Line Items]
Total Product and Service Revenue before Rental Revenues	270	356	578	719
Eastern Hemisphere \| Europe, Sub-Sahara Africa, Russia
Disaggregation of Revenue [Line Items]
Total Product and Service Revenue before Rental Revenues	215	219	431	441
Eastern Hemisphere \| Asia
Disaggregation of Revenue [Line Items]
Total Product and Service Revenue before Rental Revenues	81	$ 76	$ 156	$ 132
Combined Company Segment 606 Revenue [Member]
Disaggregation of Revenue [Line Items]
Total Product and Service Revenue before Rental Revenues	$ 1,225