DEBT Debt Extinguishment (Details) - USD ($) $ in Millions		3 Months Ended		6 Months Ended
		Jun. 30, 2016	Jun. 30, 2015	Jun. 30, 2016	Jun. 30, 2015
Extinguishment of Debt [Line Items]
Debt reductions	[1]	$ 0	$ 1,172	$ 0	$ 1,389
Write off of deferred debt issuance cost		$ 0	$ 207	$ 0	$ 208

[1] Reductions related to notes with interest rates ranging from 4.70% to 9.38% with original maturities from 2018 to 2030 for the three months ended June 30, 2015 and from 4.70% to 9.38% with original maturities from 2015 to 2030 for the six months ended June 30, 2015.