SUPPLEMENTAL FINANCIAL STATEMENT INFORMATION Narrative (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2017	Jun. 30, 2016	Jun. 30, 2017	Jun. 30, 2016	Dec. 31, 2016
Disclosure Text Block Supplement [Abstract]
Temporary investments	$ 753		$ 753		$ 757
Allowance for doubtful accounts	71		71		70
Accumulated depreciation	22,300		22,300		$ 21,600
Depreciation expense	$ 332	$ 284	656	$ 551
Interest payments			$ 387	$ 333