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Other Information (Schedule Of Other Long-Term Liabilities) (Detail) - USD ($)
$ in Thousands
Dec. 31, 2015
Dec. 31, 2014
Other Information [Abstract]    
Unrecognized tax benefits $ 113,563 $ 110,410
Asset retirement obligation 47,574 53,936
Non-qualified plan liabilities 10,385 11,568
Deferred income 137,942 23,734
Deferred rent 141,911 125,530
Employee related liabilities 47,491 39,963
Other 27,705 89,722
Total other long-term liabilities $ 526,571 $ 454,863