Intangible Assets, Net (Narrative) (Detail)	6 Months Ended
	Jun. 30, 2015
Long-term Franchise Agreements and Contracts [Member]
Acquired Finite-Lived Intangible Assets [Line Items]
Weighted average amortization period of acquired intangible assets	10 years
Customer Lists [Member]
Acquired Finite-Lived Intangible Assets [Line Items]
Weighted average amortization period of acquired intangible assets	5 years 8 months 9 days
Permits and Non-Competition Agreements [Member]
Acquired Finite-Lived Intangible Assets [Line Items]
Weighted average amortization period of acquired intangible assets	38 years 1 month 10 days