Disclosure of AOCI (Details) (USD $) In Millions, unless otherwise specified	6 Months Ended
	Jun. 30, 2013	Jun. 30, 2012	Dec. 31, 2012	Dec. 31, 2011
Other Comprehensive Income (Loss), Foreign Currency Translation Gain (Loss) Arising During Period, Tax	$ 0	$ 0
Other Comprehensive Income (Loss), Unrealized Gain (Loss) on Derivatives Arising During Period, Tax	0	0
Other Comprehensive Income (Loss), Reclassification Adjustment on Derivatives Included in Net Income, Tax	0	0
Accumulated Other Comprehensive Income (Loss), Net of Tax	(68)		(3)
Successor [Member]
Unrealized Gains (Losses) On Cash Flow Hedges				2
Cash Flow Hedge Gain (Loss) Reclassified to Earnings, Net		(2)
Accumulated Other Comprehensive Income (Loss), Foreign Currency Translation Adjustment, Net of Tax	(68)	(10)	(3)	(9)
Other Comprehensive Income (Loss), Foreign Currency Transaction and Translation Gain (Loss) Arising During Period, Net of Tax	(65)	(1)
Accumulated Other Comprehensive Income (Loss), Net of Tax	$ (68)	$ (10)