Commitments and Contingencies (Insurance, Future Payments) (Details) - USD ($) $ in Thousands	Dec. 29, 2024	Dec. 31, 2023
Commitments and Contingencies Disclosure [Abstract]
2025	$ 19,872
2026	13,113
2027	9,891
2028	5,735
2029	3,088
THEREAFTER	7,708
Total	$ 59,407	$ 52,494

Claims payments under the self insurance reserve expected in the fifth fiscal year following the latest fiscal year.

No definition available.

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Claims payments under the self insurance reserve expected in the fourth fiscal year following the latest fiscal year.

No definition available.

Name:	blmn_SelfInsuranceReserveExpectedPaymentsDueDueInFourYears
Namespace Prefix:	blmn_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

Claims payments under the self insurance reserve expected in the third fiscal year following the latest fiscal year.

No definition available.

Name:	blmn_SelfInsuranceReserveExpectedPaymentsDueDueInThreeYears
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Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

Claims payments under the self insurance reserve expected in the second fiscal year following the latest fiscal year.

No definition available.

Name:	blmn_SelfInsuranceReserveExpectedPaymentsDueDueInTwoYears
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Data Type:	xbrli:monetaryItemType
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Claims payments under the self insurance reserve expected after the fifth fiscal year following the latest fiscal year.

No definition available.

Name:	blmn_SelfInsuranceReserveExpectedPaymentsDueDueThereafter
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Data Type:	xbrli:monetaryItemType
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Claims payments under the self insurance reserve expected in the next fiscal year following the latest fiscal year.

No definition available.

Name:	blmn_SelfInsuranceReserveExpectedPaymentsDueNextTwelveMonths
Namespace Prefix:	blmn_
Data Type:	xbrli:monetaryItemType
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Period Type:	instant

Probable amount of future payments (undiscounted) the Company may be required to make for uninsured claims.

No definition available.

Name:	blmn_SelfInsuranceReserveUndiscounted
Namespace Prefix:	blmn_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

No definition available.

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