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SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES Summary of Significant Accounting Policies - Cash and Cash Equivalents (Details) (USD $)
In Millions, unless otherwise specified
9 Months Ended 3 Months Ended 12 Months Ended
Dec. 31, 2012
Successor
Mar. 25, 2012
Predecessor
Dec. 31, 2011
Predecessor
Dec. 31, 2010
Predecessor
Restricted Cash and Cash Equivalents Items        
Interest Paid, Net $ 75 $ 17 $ 106 $ 102
Income Taxes Paid, Net $ 32 $ 0 $ 35 $ 22