SUPPLEMENTAL FINANCIAL STATEMENT INFORMATION Interest Income and Expense (Details) - USD ($) $ in Millions		3 Months Ended		6 Months Ended
		Jun. 30, 2016	Jun. 30, 2015	Jun. 30, 2016	Jun. 30, 2015
Supplemental Income Statement Elements [Abstract]
Interest Expense	[1]	$ 172	$ 164	$ 332	$ 323
Investment Income, Interest	[1]	43	20	80	42
Interest Costs Capitalized		$ 7	$ 7	$ 14	$ 14

[1] Interest expense and interest income exclude approximately $9 million and $18 million for the three months and six months ended June 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).