Intangible Franchise Rights and Goodwill (Details) (USD $)	3 Months Ended
	Mar. 31, 2015		Dec. 31, 2014
Goodwill [Line Items]
Goodwill, Impaired, Accumulated Impairment Loss	$ 42,400,000
Ending Balance	847,672,000		830,377,000
United Kingdom [Member]
Goodwill [Line Items]
Goodwill, Acquired During Period	0
Goodwill, Written off Related to Sale of Business Unit	0
Goodwill, Purchase Accounting Adjustments	1,638,000
Goodwill, Translation Adjustments	(1,580,000)
Goodwill, Subsequent Recognition of Deferred Tax Asset	0
Ending Balance	35,196,000	[1]	35,138,000	[1]
Intangible Franchise Rights
Beginning Balance	8,157,000
Additions through acquisitions	0
Indefinite-lived Intangible Assets, Purchase Accounting Adjustments	0
Indefinite-lived Intangible Assets, Written off Related to Sale of Business Unit	0
Impairment of Intangible Assets (Excluding Goodwill)	0
Currency Translation	(367,000)
Ending Balance	7,790,000
United States [Member]
Goodwill [Line Items]
Goodwill, Acquired During Period	33,756,000
Goodwill, Written off Related to Sale of Business Unit	(15,000)
Goodwill, Purchase Accounting Adjustments	(11,000)
Goodwill, Translation Adjustments	0
Goodwill, Subsequent Recognition of Deferred Tax Asset	(6,000)
Ending Balance	734,366,000	[1]	700,642,000	[1]
Intangible Franchise Rights
Beginning Balance	257,502,000
Additions through acquisitions	8,844,000
Indefinite-lived Intangible Assets, Purchase Accounting Adjustments	0
Indefinite-lived Intangible Assets, Written off Related to Sale of Business Unit	0
Impairment of Intangible Assets (Excluding Goodwill)	0
Currency Translation	0
Ending Balance	266,346,000
Brazil [Member]
Goodwill [Line Items]
Goodwill, Acquired During Period	0
Goodwill, Written off Related to Sale of Business Unit	0
Goodwill, Purchase Accounting Adjustments	0
Goodwill, Translation Adjustments	(16,487,000)
Goodwill, Subsequent Recognition of Deferred Tax Asset	0
Ending Balance	78,110,000	[1]	94,597,000	[1]
Intangible Franchise Rights
Beginning Balance	38,288,000
Additions through acquisitions	0
Indefinite-lived Intangible Assets, Purchase Accounting Adjustments	0
Indefinite-lived Intangible Assets, Written off Related to Sale of Business Unit	0
Impairment of Intangible Assets (Excluding Goodwill)	0
Currency Translation	(6,674,000)
Ending Balance	31,614,000
Consolidated Total [Member]
Goodwill [Line Items]
Goodwill, Acquired During Period	33,756,000
Goodwill, Written off Related to Sale of Business Unit	(15,000)
Goodwill, Purchase Accounting Adjustments	1,627,000
Goodwill, Translation Adjustments	(18,067,000)
Goodwill, Subsequent Recognition of Deferred Tax Asset	(6,000)
Ending Balance	847,672,000	[1]	830,377,000
Intangible Franchise Rights
Beginning Balance	303,947,000
Additions through acquisitions	8,844,000
Indefinite-lived Intangible Assets, Purchase Accounting Adjustments	0
Indefinite-lived Intangible Assets, Written off Related to Sale of Business Unit	0
Impairment of Intangible Assets (Excluding Goodwill)	0
Currency Translation	(7,041,000)
Ending Balance	$ 305,750,000

[1] 1) Net of accumulated impairment of $42.4 million.