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Summary of Significant Accounting Policies (Insurance Reserves) (Details) - Workers' compensation and general liability [Member] | 12 Months Ended
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Dec. 27, 2015
Minimum [Member] |
Insurance [Line Items] |
Insurance, annual risk free rate, period | 1 year
Maximum [Member] |
Insurance [Line Items] |
Insurance, annual risk free rate, period | 5 years

X
- Definition The period of the annual risk free rate of monetary assets that have comparable maturities, used as the discount rate in calculating reserves for unresolved insurance claims and estimates of incurred but not reported claims. + References No definition available. + Details
Name: | blmn_InsuranceAnnualRiskFreeRatePeriod
Namespace Prefix: | blmn_
Data Type: | xbrli:durationItemType
Balance Type: | na
Period Type: | duration

X
- Definition [Line Items] for Insurance [Table] + References No definition available. + Details
Name: | blmn_InsuranceLineItems
Namespace Prefix: | blmn_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Details
Name: | us-gaap_RangeAxis=us-gaap_MinimumMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | blmn_InsurancePolicyTypeAxis=blmn_WorkersCompensationAndGeneralLiabilityMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_RangeAxis=us-gaap_MaximumMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |