Business Segment Information - Net Revenues and Long-Lived Assets, Related To Geographic Areas (Details) - USD ($) $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 31, 2015	Sep. 30, 2015	Jun. 30, 2015	Mar. 31, 2015	Dec. 31, 2014	Sep. 30, 2014	Jun. 30, 2014	Mar. 31, 2014	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Geographic Information [Abstract]
Net revenues	$ 726,726	$ 738,693	$ 792,737	$ 762,571	$ 787,352	$ 749,748	$ 753,648	$ 714,618	$ 3,020,727	$ 3,005,366	$ 2,915,047
Long-lived assets	3,449,947				3,495,460				3,449,947	3,495,460
United States [Member]
Geographic Information [Abstract]
Net revenues									1,829,518	1,779,422	1,722,640
Long-lived assets	3,410,491				3,454,301				3,410,491	3,454,301
International [Member]
Geographic Information [Abstract]
Net revenues									1,191,209	1,225,944	$ 1,192,407
Long-lived assets	$ 39,456				$ 41,159				$ 39,456	$ 41,159