TAXES ON INCOME Taxes on Income - Deferred Tax Assets and Liabilities (Details) (USD $) In Millions, unless otherwise specified	Dec. 31, 2012 Successor	Dec. 31, 2011 Predecessor
Other postretirement benefits	$ 52	$ 13
Derivative financial instruments (interest rates)	13	4
Other	18	20
Total deferred income tax assets	83	37
Property, plant and equipment	(925)	(559)
Other	(2)	(7)
Total deferred income tax liabilities	(927)	(566)
Net deferred income tax liability	(844)	(529)
Less current income tax assets	9	9
Accumulated deferred income taxes	$ (853)	$ (538)