Intangible Franchise Rights and Goodwill Goodwill (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014
Goodwill [Roll Forward]
Goodwill, Beginning Balance	$ 830,377	$ 737,303
Goodwill, Acquired During Period	115,317	120,726
Goodwill, Purchase Accounting Adjustments	1,857	5,995
Goodwill, Written off Related to Sale of Business Unit	(6,088)	(16,828)
Goodwill, Impairment Loss	55,386	2,125
Goodwill, Translation Adjustments	(31,139)	(14,625)
Goodwill, Subsequent Recognition of Deferred Tax Asset	23	69
Goodwill, Ending Balance	854,915	830,377
Goodwill, Impaired, Accumulated Impairment Loss	97,800	42,400
U.S. [Member]
Goodwill [Roll Forward]
Goodwill, Beginning Balance	700,642	612,468
Goodwill, Acquired During Period	115,317	103,924
Goodwill, Purchase Accounting Adjustments	(73)	1,459
Goodwill, Written off Related to Sale of Business Unit	(6,088)	(16,828)
Goodwill, Impairment Loss	0	312
Goodwill, Translation Adjustments	0	0
Goodwill, Subsequent Recognition of Deferred Tax Asset	23	69
Goodwill, Ending Balance	809,775	700,642
U.K. [Member]
Goodwill [Roll Forward]
Goodwill, Beginning Balance	35,138	19,602
Goodwill, Acquired During Period	0	16,802
Goodwill, Purchase Accounting Adjustments	1,930	0
Goodwill, Written off Related to Sale of Business Unit	0	0
Goodwill, Impairment Loss	0	0
Goodwill, Translation Adjustments	(1,748)	(1,266)
Goodwill, Subsequent Recognition of Deferred Tax Asset	0	0
Goodwill, Ending Balance	35,320	35,138
Brazil [Member]
Goodwill [Roll Forward]
Goodwill, Beginning Balance	94,597	105,233
Goodwill, Acquired During Period	0	0
Goodwill, Purchase Accounting Adjustments	0	4,536
Goodwill, Written off Related to Sale of Business Unit	0	0
Goodwill, Impairment Loss	55,386	1,813
Goodwill, Translation Adjustments	(29,391)	(13,359)
Goodwill, Subsequent Recognition of Deferred Tax Asset	0	0
Goodwill, Ending Balance	$ 9,820	$ 94,597