SUPPLEMENTAL FINANCIAL STATEMENT INFORMATION Interest Income and Expense (Details) - USD ($) $ in Millions		3 Months Ended		9 Months Ended
		Sep. 30, 2016	Sep. 30, 2015	Sep. 30, 2016	Sep. 30, 2015
Supplemental Income Statement Elements [Abstract]
Interest Expense	[1]	$ 181	$ 158	$ 513	$ 481
Investment Income, Interest	[1]	49	17	129	59
Interest Costs Capitalized		$ 7	$ 5	$ 21	$ 19

[1] Interest expense and interest income exclude approximately $7 million and $25 million for the three months and nine months ended September 30, 2015, related to investments in and borrowings from variable interest entities for which the Company had a legal right of offset (see Note 13).