Long-term Debt - Remaining Quarterly Amortization of Term Facilities (Detail) (USD $)	3 Months Ended
	Mar. 31, 2013
June 30, 2013 - September 30, 2013 [Member] | Term Loan A-1 Facility [Member]
Debt Instrument [Line Items]
Principal amount	$ 6,750
June 30, 2013 - September 30, 2013 [Member] | Term Loan A-2 Facility [Member]
Debt Instrument [Line Items]
Principal amount	750
June 30, 2013 - September 30, 2013 [Member] | Term Loan A-3 Facility [Member]
Debt Instrument [Line Items]
Principal amount	625
December 31, 2013 - March 31, 2014 [Member] | Term Loan A-1 Facility [Member]
Debt Instrument [Line Items]
Principal amount	6,750.0
December 31, 2013 - March 31, 2014 [Member] | Term Loan A-2 Facility [Member]
Debt Instrument [Line Items]
Principal amount	750.0
December 31, 2013 - March 31, 2014 [Member] | Term Loan A-3 Facility [Member]
Debt Instrument [Line Items]
Principal amount	625.0
December 31, 2013 - March 31, 2014 [Member] | Term Loan B Facility [Member]
Debt Instrument [Line Items]
Principal amount	57.4
June 30, 2014 - December 31, 2014 [Member] | Term Loan A-1 Facility [Member]
Debt Instrument [Line Items]
Principal amount	13,500.0
June 30, 2014 - December 31, 2014 [Member] | Term Loan A-2 Facility [Member]
Debt Instrument [Line Items]
Principal amount	1,500.0
June 30, 2014 - December 31, 2014 [Member] | Term Loan A-3 Facility [Member]
Debt Instrument [Line Items]
Principal amount	625.0
June 30, 2014 - December 31, 2014 [Member] | Term Loan B Facility [Member]
Debt Instrument [Line Items]
Principal amount	57.4
March 31, 2015 [Member] | Term Loan A-1 Facility [Member]
Debt Instrument [Line Items]
Principal amount	13,500.0
March 31, 2015 [Member] | Term Loan A-2 Facility [Member]
Debt Instrument [Line Items]
Principal amount	1,500.0
March 31, 2015 [Member] | Term Loan A-3 Facility [Member]
Debt Instrument [Line Items]
Principal amount	1,250.0
March 31, 2015 [Member] | Term Loan B Facility [Member]
Debt Instrument [Line Items]
Principal amount	57.4
June 30, 2015 - September 30, 2015 [Member] | Term Loan A-1 Facility [Member]
Debt Instrument [Line Items]
Principal amount	37,125.0
June 30, 2015 - September 30, 2015 [Member] | Term Loan A-2 Facility [Member]
Debt Instrument [Line Items]
Principal amount	4,125.0
June 30, 2015 - September 30, 2015 [Member] | Term Loan A-3 Facility [Member]
Debt Instrument [Line Items]
Principal amount	1,250.0
June 30, 2015 - September 30, 2015 [Member] | Term Loan B Facility [Member]
Debt Instrument [Line Items]
Principal amount	57.4
December 31, 2015 [Member] | Term Loan A-1 Facility [Member]
Debt Instrument [Line Items]
Principal amount	74,250.0
December 31, 2015 [Member] | Term Loan A-2 Facility [Member]
Debt Instrument [Line Items]
Principal amount	8,250.0
December 31, 2015 [Member] | Term Loan A-3 Facility [Member]
Debt Instrument [Line Items]
Principal amount	1,250.0
December 31, 2015 [Member] | Term Loan B Facility [Member]
Debt Instrument [Line Items]
Principal amount	57.4
March 31, 2016 - September 30, 2016 [Member] | Term Loan A-3 Facility [Member]
Debt Instrument [Line Items]
Principal amount	1,250.0
March 31, 2016 - September 30, 2016 [Member] | Term Loan B Facility [Member]
Debt Instrument [Line Items]
Principal amount	57.4
December 31, 2016 [Member] | Term Loan A-3 Facility [Member]
Debt Instrument [Line Items]
Principal amount	1,250.0
December 31, 2016 [Member] | Term Loan B Facility [Member]
Debt Instrument [Line Items]
Principal amount	21,474.7
March 31, 2017 - June 30, 2017 [Member] | Term Loan A-3 Facility [Member]
Debt Instrument [Line Items]
Principal amount	21,250
August 9, 2017 [Member] | Term Loan A-3 Facility [Member]
Debt Instrument [Line Items]
Principal amount	$ 42,500