Long-Term Debt (Boyd Senior and Senior Subordinated Notes Narrative) (Details) (USD $)	Jun. 30, 2012 Senior Notes 9.125% Senior Notes Due 2018	Jun. 30, 2012 Parent	Jun. 30, 2012 Parent Senior Notes 9.125% Senior Notes Due 2018	Oct. 18, 2011 Parent Senior Notes 9.125% Senior Notes Due 2018	Sep. 15, 2011 Parent Senior Notes 9.125% Senior Notes Due 2018	Nov. 10, 2010 Parent Senior Notes 9.125% Senior Notes Due 2018	Jun. 30, 2012 Parent Senior Notes 9.125% Senior Notes Due 2018 Prior to December 1, 2013	Jun. 30, 2012 Parent Senior Notes 9.125% Senior Notes Due 2018 Prior to December 1, 2014	Jun. 30, 2012 Parent Senior Notes 9.125% Senior Notes Due 2018 After December 1, 2014 and Prior to 2016	Jun. 30, 2012 Parent Senior Notes 9.125% Senior Notes Due 2018 During 2016 and Thereafter	Jun. 30, 2012 Parent Senior Notes 9.00% Senior Notes Due 2020	Nov. 10, 2010 Parent Senior Notes 9.00% Senior Notes Due 2020	Jun. 30, 2012 Parent Senior Notes 9.00% Senior Notes Due 2020 Prior to July 1, 2015	Jun. 30, 2012 Parent Senior Notes 9.00% Senior Notes Due 2020 Prior to July 1, 2016	Jun. 30, 2012 Parent Senior Notes 9.00% Senior Notes Due 2020 After July 1, 2016 and Prior to 2018	Jun. 30, 2012 Parent Senior Notes 9.00% Senior Notes Due 2020 During 2018 and Thereafter	Jun. 30, 2012 Parent Senior Subordinated Notes 6.75% Senior Subordinated Notes Due 2014	Jul. 31, 2004 Parent Senior Subordinated Notes 6.75% Senior Subordinated Notes Due 2014	Apr. 15, 2004 Parent Senior Subordinated Notes 6.75% Senior Subordinated Notes Due 2014	Jun. 30, 2012 Parent Senior Subordinated Notes 7.125% Senior Subordinated Notes Due 2016	Dec. 31, 2011 Parent Senior Subordinated Notes 7.125% Senior Subordinated Notes Due 2016	Jan. 30, 2006 Parent Senior Subordinated Notes 7.125% Senior Subordinated Notes Due 2016
Debt Instrument [Line Items]
Face amount						$ 500,000,000						$ 350,000,000							$ 350,000,000			$ 250,000,000
Debt instrument, stated interest rate	9.125%					9.125%						9.00%							6.75%			7.125%
Face amount remaining after exchange																		50,000
Ownership percentage of subsidiaries		100.00%
Conditional repurchase price, % of principal			101.00%								101.00%
Redeemable portion of principal amount, %							35.00%						35.00%
Redemption price, % of principal							109.125%	100.00%	104.563%	100.00%			109.00%	100.00%	104.50%	100.00%	100.00%			100.00%	103.563%
Principal amount included in company exchange offer					$ 500,000,000
Principal amount included in company exchange offer, % accepted				100.00%