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Consolidated Statements of Comprehensive (Loss) Income (Parenthetical) (Predecessor [Member], USD $) In Millions	3 Months Ended		6 Months Ended
	Mar. 31, 2011	Jun. 30, 2010	Jun. 30, 2010
Predecessor [Member]
Defined benefit pension and postretirement plans, tax	$ 4	$ 4	$ 11
Other comprehensive income other, tax			$ 2

Tax effects of the increase (decrease) to accumulated comprehensive income during the period related to benefit plans. While for technical reasons this element has no balance attribute, the default assumption is a credit balance consistent with its label.

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