Subsequent Events (Details) (USD $)	3 Months Ended		6 Months Ended			0 Months Ended				3 Months Ended			0 Months Ended
	Jun. 30, 2012	Jun. 30, 2011	Jun. 30, 2012	Jun. 30, 2011	Aug. 13, 2012 Subsequent event [Member] Adoption of new equity plan [Member] Equity plan 2012 [Member]	Aug. 13, 2012 Subsequent event [Member] Adoption of new equity plan [Member] Equity plan 2012 [Member] Performance awards [Member]	Aug. 13, 2012 Subsequent event [Member] Adoption of new equity plan [Member] Equity plan 2012 [Member] Performance awards [Member] Minimum [Member]	Sep. 04, 2012 Subsequent event [Member] Amended and restated employment agreement [Member] Chief Executive Officer [Member]	Aug. 13, 2012 Subsequent event [Member] Accelerated non-cash stock compensation expense for vested equity awards [Member]	Sep. 30, 2012 Subsequent event [Member] Repayment of debt [Member] Senior notes [Member]	Jun. 30, 2012 OSI Restaurant Partners LLC [Member] Senior notes [Member]	Dec. 31, 2011 OSI Restaurant Partners LLC [Member] Senior notes [Member]	Aug. 13, 2012 OSI Restaurant Partners LLC [Member] Subsequent event [Member] Repayment of debt [Member] Senior notes [Member]
Subsequent Event [Line Items]
Principal amount of senior notes tendered													$ 102,200,000
Percentage of senior notes tendered													41.20%
Debt instrument, interest rate, stated percentage											10.00%	10.00%	10.00%
Total payment for senior notes													106,800,000
Prepayment premium and early tender incentive fees paid on senior notes tendered													2,900,000
Accrued interest paid on senior notes tendered													1,700,000
Remaining senior notes tendered, redemption premium													102.50%
Debt called for redemption													145,900,000
Prepayment premium on debt called for redemption													3,600,000
Accrued interest on debt called for redemption													3,500,000
Loss on extinguishment of debt	0	0	2,851,000	0						9,000,000
Write off of unamortized deferred financing fees										2,400,000
Aggregate non-cash compensation expense									16,000,000
Total shares authorized under the equity plan					3,000,000
Annual automatic increase in number of shares authorized, percentage of shares issued and outstanding					2.00%
Performance period measured							1 year
Termination period from effective date						10 years
Amended and restated employment agreement, automatic renewal periods								1 year
Amended and restated employment agreement, increase in annual base salary								50,000
Amended and restated employment agreement, annual base salary								$ 975,000