Equity-Based Compensation - Schedule of Options Granted and Vesting Terms (Detail) (USD $) In Millions, except Share data, unless otherwise specified	3 Months Ended	0 Months Ended	1 Months Ended		3 Months Ended		1 Months Ended	3 Months Ended	1 Months Ended	3 Months Ended	1 Months Ended	3 Months Ended	1 Months Ended	3 Months Ended
	Mar. 31, 2014	Mar. 26, 2014 Stock Option	Dec. 02, 2010 Granted in December 2, 2010 2007 Omnibus Equity Incentive Plan		Mar. 31, 2014 Granted in December 2, 2010 2007 Omnibus Equity Incentive Plan		Jan. 22, 2011 Granted in January 22, 2011 2007 Omnibus Equity Incentive Plan	Mar. 31, 2014 Granted in January 22, 2011 2007 Omnibus Equity Incentive Plan	Apr. 09, 2011 Granted in April 9, 2011 2007 Omnibus Equity Incentive Plan	Mar. 31, 2014 Granted in April 9, 2011 2007 Omnibus Equity Incentive Plan	Jul. 09, 2012 Granted in July 9, 2012 2007 Omnibus Equity Incentive Plan	Mar. 31, 2014 Granted in July 9, 2012 2007 Omnibus Equity Incentive Plan	Dec. 28, 2012 Granted in December 28, 2012 2007 Omnibus Equity Incentive Plan	Mar. 31, 2014 Granted in December 28, 2012 2007 Omnibus Equity Incentive Plan
Schedule Of Stock Options [Line Items]
Options Granted	0		5,000,000	[1]			555,556		25,000		50,000		200,000
Vesting Terms					Vested and became exercisable with respect to 4/24 of the option shares on December 31, 2011 and the remainder vest in equal installments over each of the remaining 20 quarters with full vesting on December 31, 2016; 1,250,000 of these options were forfeited during the quarter ended March 31, 2014.	[1]		Half of such options that vested and became exercisable on December 31, 2011 were exercised on March 5, 2012 and the other half that were due to become exercisable on December 31, 2012 were forfeited during the quarter ended March 31, 2012.		Vested and became exercisable with respect to half of the option shares on December 31, 2011 and the other half vested in four equal quarterly installments starting on March 31, 2012 and ending on December 31, 2012 and are fully vested as of the date of this report.		Will vest and become exercisable with respect to 4/24 of the option shares on June 30, 2013 and the remainder will vest in equal installments over each of the remaining 20 quarters with full vesting on June 30, 2018.		Will vest and become exercisable with respect to 4/24 of the option shares on June 30, 2013 and the remainder will vest in equal installments over each of the remaining 20 quarters with full vesting on June 30, 2018.
Share-based Compensation Arrangement by Share-based Payment Award Accelerated Compensation Cost		$ 28.1
Share-based Compensation Arrangement by Share-based Payment Award, Accelerated Vesting, Number		1,250,000
Options Forfeited	1,250,000	1,250,000

[1] 1,250,000 share options that were previously granted to such employee vested immediately and 1,250,000