Stockholders' Equity (Other Comprehensive Income (Loss)) (Details) - USD ($) $ in Thousands		3 Months Ended		6 Months Ended
		Jul. 01, 2018	Jun. 25, 2017	Jul. 01, 2018	Jun. 25, 2017
Accumulated other comprehensive income (loss) [Line Items]
Unrealized gain (loss) on derivatives, net of tax		$ 296	$ (610)	$ 1,184	$ (509)
Reclassification of adjustment for loss on derivatives included in Net income, net of tax		71	643	379	1,427
Other comprehensive (loss) income attributable to Bloomin’ Brands				(27,132)	12,281
Bloomin' Brands [Member]
Accumulated other comprehensive income (loss) [Line Items]
Foreign currency translation adjustment, attributable to parent		(30,402)	(9,176)	(29,036)	11,401
Unrealized gain (loss) on derivatives, net of tax	[1]	296	(610)	1,184	(509)
Reclassification of adjustment for loss on derivatives included in Net income, net of tax	[2]	71	643	379	1,427
Total unrealized gain on derivatives, net of tax		367	33	1,563	918
Other comprehensive (loss) income attributable to Bloomin’ Brands		(30,035)	(9,143)	(27,473)	12,319
Other comprehensive income, unrealized gain on derivatives arising during period, tax		$ 100	(400)	400	(300)
Reclassification of adjustment for loss on derivatives included in net income, tax			$ 400	$ 100	$ 900

[1] Unrealized gain (loss) on derivatives is net of tax of $0.1 million and $(0.4) million for the thirteen weeks ended July 1, 2018 and June 25, 2017, respectively, and $0.4 million and ($0.3) million for the twenty-six weeks ended July 1, 2018 and June 25, 2017, respectively.

[2] Reclassifications of adjustments for losses on derivatives are net of tax of $0.4 million for the thirteen weeks ended June 25, 2017 and $0.1 million and $0.9 million for the twenty-six weeks ended July 1, 2018 and June 25, 2017, respectively.