INCOME TAXES - Operating Losses and Tax Credit Carryforwards (Details) $ in Millions	Sep. 30, 2015 USD ($)
Operating Loss Carryforwards [Line Items]
Net Operating Losses and Tax Credit Carryforwards	$ 608
Valuation Allowances on these Deferred Tax Assets	579
2016-2020
Operating Loss Carryforwards [Line Items]
Net Operating Losses and Tax Credit Carryforwards	36
Valuation Allowances on these Deferred Tax Assets	33
2021-2030
Operating Loss Carryforwards [Line Items]
Net Operating Losses and Tax Credit Carryforwards	274
Valuation Allowances on these Deferred Tax Assets	271
2031-2035
Operating Loss Carryforwards [Line Items]
Net Operating Losses and Tax Credit Carryforwards	30
Valuation Allowances on these Deferred Tax Assets	30
Indefinite
Operating Loss Carryforwards [Line Items]
Net Operating Losses and Tax Credit Carryforwards	268
Valuation Allowances on these Deferred Tax Assets	$ 245