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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- Definition

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		9 Months Ended
	Sep. 30, 2018	Sep. 30, 2017	Sep. 30, 2018	Sep. 30, 2017
Disaggregation of Revenue [Line Items]
Rental Revenues	$ 75		$ 270
Total Revenues	1,444	$ 1,460	4,315	$ 4,209
Western Hemisphere
Disaggregation of Revenue [Line Items]
Total Product and Service Revenue before Rental Revenues	705		2,089
Western Hemisphere \| United States
Disaggregation of Revenue [Line Items]
Total Product and Service Revenue before Rental Revenues	359		1,050
Western Hemisphere \| Latin America
Disaggregation of Revenue [Line Items]
Total Product and Service Revenue before Rental Revenues	258		754
Western Hemisphere \| Canada
Disaggregation of Revenue [Line Items]
Total Product and Service Revenue before Rental Revenues	88		285
Eastern Hemisphere
Disaggregation of Revenue [Line Items]
Total Product and Service Revenue before Rental Revenues	664		1,956
Eastern Hemisphere \| Middle East and North Africa
Disaggregation of Revenue [Line Items]
Total Product and Service Revenue before Rental Revenues	355		1,074
Eastern Hemisphere \| Europe, Sub-Sahara Africa, Russia
Disaggregation of Revenue [Line Items]
Total Product and Service Revenue before Rental Revenues	230		671
Eastern Hemisphere \| Asia
Disaggregation of Revenue [Line Items]
Total Product and Service Revenue before Rental Revenues	79		211
Combined Company Segment 606 Revenue [Member]
Disaggregation of Revenue [Line Items]
Total Product and Service Revenue before Rental Revenues	$ 1,369		$ 4,045