Debt - Long-Term Debt (Parenthetical) (Detail)	Dec. 31, 2013	Dec. 31, 2012
Long Term Debt [Abstract]
Revolving credit facility, weighted-average interest rate	1.90%	1.80%

Weighted average interest rate of long-term debt outstanding.

No definition available.

Name:	us-gaap_LongtermDebtWeightedAverageInterestRate
Namespace Prefix:	us-gaap_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	instant