Goodwill And Other Intangible Assets (Schedule Of Intangible Assets) (Detail) (USD $) In Thousands, unless otherwise specified	Jun. 30, 2012	Dec. 31, 2011
Finite-Lived Intangible Assets [Line Items]
Intangible assets, Gross Amount	$ 1,329,552	$ 1,090,847
Intangible assets, Accumulated Amortization	339,328	306,207
Customer Relationships
Finite-Lived Intangible Assets [Line Items]
Intangible assets, Gross Amount	1,149,093	941,787
Intangible assets, Accumulated Amortization	291,841	262,841
Trademarks And Trade Names
Finite-Lived Intangible Assets [Line Items]
Intangible assets, Gross Amount	152,991	123,192
Intangible assets, Accumulated Amortization	28,824	25,628
Other
Finite-Lived Intangible Assets [Line Items]
Intangible assets, Gross Amount	27,468	25,868
Intangible assets, Accumulated Amortization	$ 18,663	$ 17,738