Recent Accounting Guidance Revenue ASU - Balance Sheet Current Period Impact (Details) - USD ($) $ in Millions	Dec. 31, 2018	Jan. 01, 2018	Dec. 31, 2017
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Accounts and notes receivable - net	$ 5,534		$ 5,239
Inventories	7,407		8,633
Other current assets	1,165		981
Deferred Income Taxes	303		480
Accrued and other current liabilities	4,233		4,384
Deferred income tax liabilities	5,381		5,836
(Accumulated deficit) retained earnings	(7,669)		$ 175
Effect of Adoption of ASU 2014-09 [Member]
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Accounts and notes receivable - net	(40)	$ 79
Inventories	32	(53)
Other current assets	(80)	101
Deferred Income Taxes	(1)	1
Accrued and other current liabilities	(80)	120
Deferred income tax liabilities	(3)	3
(Accumulated deficit) retained earnings	(6)	$ 8
Balance without Adoption of ASU 2014-09 [Member]
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Accounts and notes receivable - net	5,494
Inventories	7,439
Other current assets	1,085
Deferred Income Taxes	302
Accrued and other current liabilities	4,153
Deferred income tax liabilities	5,378
(Accumulated deficit) retained earnings	$ (7,675)