Segment Information (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 31, 2012	Mar. 31, 2011	Dec. 31, 2011
Segment Reporting Information
Total Revenues	$ 746,498	$ 746,009
Depreciation and Amortization	78,008	80,163
Depreciation	70,149	73,338
Amortization	7,859	6,825
Adjusted OIBDA	220,540	217,299
Total Assets	6,086,622	6,487,604	6,041,258
Expenditures for Segment Assets	67,742	89,806
Capital Expenditures	55,916	52,208
Cash Paid for Acquisitions, Net of Cash Acquired	8,818	34,705
Additions to Customer Relationship and Acquisition Costs	3,008	2,893
North American Business
Segment Reporting Information
Total Revenues	552,311	555,298
Depreciation and Amortization	44,514	45,416
Depreciation	41,396	42,453
Amortization	3,118	2,963
Adjusted OIBDA	226,349	227,975
Total Assets	4,228,281	4,310,523
Expenditures for Segment Assets	39,336	36,050
Capital Expenditures	27,933	28,785
Cash Paid for Acquisitions, Net of Cash Acquired	8,818	5,029
Additions to Customer Relationship and Acquisition Costs	2,585	2,236
International Business
Segment Reporting Information
Total Revenues	194,187	190,711
Depreciation and Amortization	25,407	25,421
Depreciation	20,701	21,599
Amortization	4,706	3,822
Adjusted OIBDA	43,559	38,878
Total Assets	1,666,245	1,792,908
Expenditures for Segment Assets	20,294	47,724
Capital Expenditures	19,871	17,391
Cash Paid for Acquisitions, Net of Cash Acquired		29,676
Additions to Customer Relationship and Acquisition Costs	423	657
Corporate
Segment Reporting Information
Depreciation and Amortization	8,087	9,326
Depreciation	8,052	9,286
Amortization	35	40
Adjusted OIBDA	(49,368)	(49,554)
Total Assets	192,096	384,173
Expenditures for Segment Assets	8,112	6,032
Capital Expenditures	$ 8,112	$ 6,032