Debt (Summary Of Long-Term Debt) (Details) (USD $) In Thousands, unless otherwise specified	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2012 Term-A Facility [Member]	Dec. 31, 2011 Term-A Facility [Member]	Jun. 30, 2011 Term-A Facility [Member]	Dec. 31, 2012 Term-B Facility [Member]	Dec. 31, 2011 Term-B Facility [Member]	Jun. 30, 2011 Term-B Facility [Member]	Dec. 31, 2012 7.75% Senior Notes [Member]	Dec. 31, 2011 7.75% Senior Notes [Member]	Jun. 30, 2011 7.75% Senior Notes [Member]	Dec. 31, 2012 4.75% Senior Notes [Member]	Dec. 17, 2012 4.75% Senior Notes [Member]	Dec. 31, 2011 4.75% Senior Notes [Member]
Debt Instrument [Line Items]
Long-term Debt, Gross	$ 2,180,000	$ 2,322,025	$ 880,000	$ 1,030,000		$ 0	$ 592,025		$ 700,000	$ 700,000		$ 600,000		$ 0
Debt Instrument, Unamortized Discount	(26,685)	(30,745)			(5,650)			(12,986)			(14,000)		(10,500)
Long-term Debt, Net	2,153,315	2,291,280
Current Portion Of Long-term Debt	0	5,950
Noncurrent Portion Of Long-term Debt	$ 2,153,315	$ 2,285,330