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Commitments and Contingencies (Undiscounted Reserves to the Discounted Reserves) (Details) - USD ($) $ in Thousands | Dec. 29, 2024 | Dec. 31, 2023
--- | --- | ---
Insurance [Line Items] |  |  |
Undiscounted reserves |  | $ 59,407 | $ 52,494
Discount | [1] | (6,361) | (6,568)
Discounted reserves |  | $ 53,046 | $ 45,926
Discount rate |  | 4.21% | 5.13%
Accrued and other current liabilities |  |  |
Insurance [Line Items] |  |  |
Self insurance reserve, current |  | $ 19,527 | $ 19,310
Other long-term liabilities, net |  |  |
Insurance [Line Items] |  |  |
Self insurance reserve, noncurrent |  | $ 33,519 | $ 26,616
[1] | Discount rates of 4.21% and 5.13% were used for December 29, 2024 and December 31, 2023, respectively.

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

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- Definition The calculated discount as of the balance sheet date to reduce the undiscounted amount of the self insurance reserve to present value. + References No definition available. + Details
Name: | blmn_SelfInsuranceReserveDiscount
Namespace Prefix: | blmn_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

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- Definition The rate applied as of the balance sheet date to reduce the undiscounted amount of the self-insurance reserve to present value. + References No definition available. + Details
Name: | blmn_SelfInsuranceReserveDiscountRate
Namespace Prefix: | blmn_
Data Type: | dtr-types1:percentItemType
Balance Type: | na
Period Type: | instant

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- Definition Probable amount of future payments (undiscounted) the Company may be required to make for uninsured claims. + References No definition available. + Details
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Namespace Prefix: | blmn_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

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- Definition Carrying amount (including both current and noncurrent portions) of accrued known and estimated losses incurred as of the balance sheet date for which no insurance coverage exists, and for which a claim has been made or is probable of being asserted, typically arising from workmen's compensation-type of incidents and personal injury to nonemployees from accidents on the entity's property. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Topic 210 -SubTopic 10 -Name Accounting Standards Codification -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02(24)) -Publisher FASB -URI https://asc.fasb.org/1943274/2147480566/210-10-S99-1 + Details
Name: | us-gaap_SelfInsuranceReserve
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Carrying amount of accrued known and estimated losses incurred as of the balance sheet date for which no insurance coverage exists, and for which a claim has been made or is probable of being asserted, typically arising from workmen's compensation-type of incidents and personal injury to nonemployees from accidents on the entity's property that are expected to be paid within one year (or the normal operating cycle, if longer). + References No definition available. + Details
Name: | us-gaap_SelfInsuranceReserveCurrent
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Carrying amount of accrued known and estimated losses incurred as of the balance sheet date for which no insurance coverage exists, and for which a claim has been made or is probable of being asserted, typically arising from workmen's compensation-type of incidents and personal injury to nonemployees from accidents on the entity's property that are expected to be paid after one year (or the normal operating cycle, if longer). + References No definition available. + Details
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Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

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- Details
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- Details
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Balance Type: |
Period Type: |