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Fair Value Disclosures - Fair Value of Senior Notes Considered at Level 2 Valuation Derived from Quoted Market Prices by Independent Dealers (Detail) (Level 2 [Member], TMM Holdings Limited Partnership [Member], 2020 Senior Notes [Member], Successor [Member], USD $)
Mar. 31, 2013
Dec. 31, 2012
Level 2 [Member] | TMM Holdings Limited Partnership [Member] | 2020 Senior Notes [Member] | Successor [Member]
   
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Aggregate Principal $ 675,000,000 $ 675,000,000
Estimated Fair Value $ 723,938,000 $ 723,938,000