Recent Accounting Guidance Revenue ASU - Balance Sheet Current Period Impact (Details) - USD ($) $ in Millions	Sep. 30, 2018	Jan. 01, 2018	Dec. 31, 2017
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Accounts and notes receivable - net	$ 7,079		$ 5,239
Inventories	6,852		8,633
Other current assets	1,188		981
Deferred Income Taxes	276		480
Accrued and other current liabilities	2,612		4,384
Deferred Income Tax Liabilities	5,456		5,836
(Accumulated deficit) retained earnings	(6,988)		175
As Reported
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Accounts and notes receivable - net			5,239
Inventories			8,633
Other current assets			981
Deferred Income Taxes			480
Accrued and other current liabilities			4,384
Deferred Income Tax Liabilities			5,836
(Accumulated deficit) retained earnings			$ 175
Effect of Adoption of ASU 2014-09
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Accounts and notes receivable - net	(22)	$ 79
Inventories	12	(53)
Other current assets	(59)	101
Deferred Income Taxes	(1)	1
Accrued and other current liabilities	(40)	120
Deferred Income Tax Liabilities	(8)	3
(Accumulated deficit) retained earnings	(22)	$ 8
Balance without Adoption of ASU 2014-09
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Accounts and notes receivable - net	7,057
Inventories	6,864
Other current assets	1,129
Deferred Income Taxes	275
Accrued and other current liabilities	2,572
Deferred Income Tax Liabilities	5,448
(Accumulated deficit) retained earnings	$ (7,010)