Goodwill and Other Intangible Assets (Summary Of Intangible Assets) (Details) (USD $) In Thousands, unless otherwise specified	Jun. 30, 2014	Dec. 31, 2013
Gross Carrying Amount of Amortizable Intangible Assets	$ 546,807	$ 244,244
Accumulated amortization	(68,346)	(54,592)
Amortizable intangible assets, net of accumulated amortization	478,461	189,652
Trademarks	19,900	19,900
Intangible Assets, Gross, Excluding Goodwill	566,707	264,144
Total intangible assets, net	498,361	209,552
Affiliate and Customer Relationships [Member]
Gross Carrying Amount of Amortizable Intangible Assets	486,229	243,600
Accumulated amortization	(66,417)	(53,971)
Amortizable intangible assets, net of accumulated amortization	419,812	189,629
Trade Names [Member]
Gross Carrying Amount of Amortizable Intangible Assets	59,934
Accumulated amortization	(1,294)
Amortizable intangible assets, net of accumulated amortization	58,640
Other Amortizable Intangible Assets [Member]
Gross Carrying Amount of Amortizable Intangible Assets	644	644
Accumulated amortization	(635)	(621)
Amortizable intangible assets, net of accumulated amortization	$ 9	$ 23