Intangible Franchise Rights and Goodwill (Details) $ in Thousands	9 Months Ended
	Sep. 30, 2015 USD ($)
Goodwill [Roll Forward]
Goodwill, Beginning Balance	$ 830,377
Goodwill, Ending Balance	912,639
Goodwill, Impaired, Accumulated Impairment Loss	42,400
U.S. [Member]
Intangible Franchise Rights [Roll Forward]
Intangible Franchise Rights, Beginning Balance	257,502
Additions through acquisitions	49,432
Indefinite-lived Intangible Assets, Written off Related to Sale of Business Unit	(188)
Currency Translation	0
Intangible Franchise Rights, Ending Balance	306,746
Goodwill [Roll Forward]
Goodwill, Beginning Balance	700,642	[1]
Goodwill, Acquired During Period	115,317
Goodwill, Purchase Accounting Adjustments	(74)
Goodwill, Written off Related to Sale of Business Unit	(1,109)
Goodwill, Translation Adjustments	0
Goodwill, Subsequent Recognition of Deferred Tax Asset	(18)
Goodwill, Ending Balance	814,758	[1]
U.K. [Member]
Intangible Franchise Rights [Roll Forward]
Intangible Franchise Rights, Beginning Balance	8,157
Additions through acquisitions	0
Indefinite-lived Intangible Assets, Written off Related to Sale of Business Unit	0
Currency Translation	(193)
Intangible Franchise Rights, Ending Balance	7,964
Goodwill [Roll Forward]
Goodwill, Beginning Balance	35,138	[1]
Goodwill, Acquired During Period	0
Goodwill, Purchase Accounting Adjustments	1,729
Goodwill, Written off Related to Sale of Business Unit	0
Goodwill, Translation Adjustments	(885)
Goodwill, Subsequent Recognition of Deferred Tax Asset	0
Goodwill, Ending Balance	35,982	[1]
Brazil [Member]
Intangible Franchise Rights [Roll Forward]
Intangible Franchise Rights, Beginning Balance	38,288
Additions through acquisitions	0
Indefinite-lived Intangible Assets, Written off Related to Sale of Business Unit	0
Currency Translation	(13,235)
Intangible Franchise Rights, Ending Balance	25,053
Goodwill [Roll Forward]
Goodwill, Beginning Balance	94,597	[1]
Goodwill, Acquired During Period	0
Goodwill, Purchase Accounting Adjustments	0
Goodwill, Written off Related to Sale of Business Unit	0
Goodwill, Translation Adjustments	(32,698)
Goodwill, Subsequent Recognition of Deferred Tax Asset	0
Goodwill, Ending Balance	61,899	[1]
Consolidated Total [Member]
Intangible Franchise Rights [Roll Forward]
Intangible Franchise Rights, Beginning Balance	303,947
Additions through acquisitions	49,432
Indefinite-lived Intangible Assets, Written off Related to Sale of Business Unit	(188)
Currency Translation	(13,428)
Intangible Franchise Rights, Ending Balance	339,763
Goodwill [Roll Forward]
Goodwill, Beginning Balance	830,377
Goodwill, Acquired During Period	115,317
Goodwill, Purchase Accounting Adjustments	1,655
Goodwill, Written off Related to Sale of Business Unit	(1,109)
Goodwill, Translation Adjustments	(33,583)
Goodwill, Subsequent Recognition of Deferred Tax Asset	(18)
Goodwill, Ending Balance	$ 912,639	[1]

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