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Related Parties (Details) (Subsequent event [Member], Kangaroo Management Company I, LLC [Member], USD $) In Millions, unless otherwise specified	3 Months Ended
	Sep. 30, 2012
Subsequent event [Member] | Kangaroo Management Company I, LLC [Member]
Related Party Transaction [Line Items]
Termination fee paid to the Management Company as a result of completion of IPO	$ 8.0

X

- Definition

Management agreement, termination fee

+ References

No definition available.

+ Details

Name:	blmn_ManagementAgreementTerminationFee
Namespace Prefix:	blmn_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

X

- Details

Name:	us-gaap_RelatedPartyTransactionLineItems
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration