Long-Term Debt - Aggregate Maturities of Debt (Parenthetical) (Detail) (USD $) In Millions, unless otherwise specified	6 Months Ended	12 Months Ended
	Jun. 30, 2014	Dec. 31, 2013
Debt Instrument [Line Items]
Change in maturity date, description	The term loans maturing in June 2019 and the revolver availability through June 2018 are subject to a reduction in maturity to November 2015, December 2015, June 2016 or September 2016 if the Company is unable to repay or refinance its debt outstanding under the second lien credit agreement or its unsecured debt prior to their maturity dates.	The term loans maturing in June 2019 and the revolver availability through June 2018 are subject to a reduction in maturity to November 2015, December 2015, June 2016 or September 2016 if the Company is unable to repay or refinance its debt outstanding under the second lien credit agreement or its unsecured debt prior to their maturity dates.
Other Non-Current Liabilities [Member]
Debt Instrument [Line Items]
Payment-in-kind interest accrued or to be accrued	$ 5
Scenario, Forecast [Member]
Debt Instrument [Line Items]
Payment-in-kind interest accrued or to be accrued	56
Repayment fees to be accrued in future	7
Debt discount on term loans	$ 23