Equity In Net Assets Of Nonconsolidated Affiliates Transactions with NCAs (Details) - Nonconsolidated Affiliates [Member] - USD ($) $ in Millions	12 Months Ended
Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Related Party Transactions [Line Items]
Automotive sales and revenue	$ 406	$ 923	$ 889
Automotive purchases, net	1,155	674	803
Dividends received	2,022	2,000	2,120
Operating cash flows	657	2,321	$ 2,512
Accounts and notes receivable, net	979	780
Accounts payable	163	534
Undistributed earnings	$ 2,331	$ 2,184

The net cash provided by (used in) operating activities resulting from transactions with related parties.

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For an unclassified balance sheet, amounts due from related parties including affiliates, employees, joint ventures, officers and stockholders, immediate families thereof, and pension funds.

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Carrying amount as of the balance sheet date of obligations due all related parties.

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Amount of distribution received from equity method investee for return on investment, classified as operating activities. Excludes distribution for return of investment, classified as investing activities.

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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.

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Purchases during the period (excluding transactions that are eliminated in consolidated or combined financial statements) with related party.

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Amount of consolidated retained earnings that represent undistributed (not yet received) earnings from 50% or less owned persons accounted for by the equity method (equity method investees).

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Amount of revenue, fees and commissions earned from transactions between (a) a parent company and its subsidiaries; (b) subsidiaries of a common parent; (c) an entity and trusts for the benefit of employees, for example, but not limited to, pension and profit-sharing trusts that are managed by or under the trusteeship of the entity's management; (d) an entity and its principal, owners, management, or members of their immediate families; and (e) affiliates.

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