Intangible Assets, Net (Narrative) (Detail)	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013
Long-term Franchise Agreements and Contracts [Member]
Acquired Finite-Lived Intangible Assets [Line Items]
Weighted average amortization period of acquired intangible assets	2 years 6 months	10 years
Customer Lists [Member]
Acquired Finite-Lived Intangible Assets [Line Items]
Weighted average amortization period of acquired intangible assets	9 years 2 months 4 days	6 years 4 months 30 days