ALLIANCES ALLIANCE (Total) (Details) - USD ($) $ in Millions	3 Months Ended								12 Months Ended
	Dec. 31, 2018	Sep. 30, 2018	Jun. 30, 2018	Mar. 31, 2018	Dec. 31, 2017	Sep. 30, 2017	Jun. 30, 2017	Mar. 31, 2017	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Collaborative Arrangements and Non-collaborative Arrangement Transactions [Line Items]
Revenues	$ 5,973	$ 5,691	$ 5,704	$ 5,193	$ 5,449	$ 5,254	$ 5,144	$ 4,929	$ 22,561	$ 20,776	$ 19,427
Cost of Goods and Services Sold									6,547	6,094	4,969
Other Nonoperating Income (Expense)									(850)	(1,682)	(1,448)
Receivables	5,965				6,300				5,965	6,300
Accounts payable	1,892				2,248				1,892	2,248
Collaborative Arrangement [Member]
Collaborative Arrangements and Non-collaborative Arrangement Transactions [Line Items]
Revenues									9,006	7,879	6,782
Cost of Goods and Services Sold									3,439	2,718	2,126
Selling, General and Administrative Expense - Collaborative Arrangement									(104)	(62)	(30)
Research and Development Expense - Collaborative Arrangement									1,044	(28)	(9)
Other Nonoperating Income (Expense)									(67)	(46)	(42)
Receivables	395				322				395	322
Accounts payable	904				875				904	875
Deferred income	$ 491				$ 467				491	467
Sales Revenue, Net [Member]
Collaborative Arrangements and Non-collaborative Arrangement Transactions [Line Items]
Revenues									21,581	19,258	17,702
Sales Revenue, Net [Member] | Collaborative Arrangement [Member]
Collaborative Arrangements and Non-collaborative Arrangement Transactions [Line Items]
Revenues									8,359	6,917	5,530
Collaborative Arrangement [Member] | Collaborative Arrangement [Member]
Collaborative Arrangements and Non-collaborative Arrangement Transactions [Line Items]
Revenues									$ 647	$ 962	$ 1,252