Long-Term Debt (Boyd Bank Credit Facility Availability) (Details) (Parent, Bank Credit Facility, USD $) In Thousands, unless otherwise specified	Jun. 30, 2012	Dec. 03, 2010	Jun. 30, 2012 Extended Revolving Facility	Jun. 30, 2012 Initial Term Loan	Jun. 30, 2012 Incremental Term Loan	Jun. 30, 2012 Former Credit Facility	Dec. 02, 2010 Former Credit Facility	Jun. 30, 2012 Former Credit Facility Extended Revolving Facility	Jun. 30, 2012 Former Credit Facility Initial Term Loan	Jun. 30, 2012 Former Credit Facility Incremental Term Loan	Jun. 30, 2012 Amended Credit Facility	Jun. 30, 2012 Amended Credit Facility Extended Revolving Facility	Jun. 30, 2012 Amended Credit Facility Initial Term Loan	Jun. 30, 2012 Amended Credit Facility Incremental Term Loan
Line of Credit Facility [Line Items]
Commitment		$ 1,500,000				$ 1,460,000	$ 3,000,000	$ 960,000	$ 500,000	$ 0	$ 1,810,000	$ 960,000	$ 500,000	$ 350,000
Remaining Availability	$ 300,405		$ 300,405	$ 0	$ 0