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Leases - Narrative (Details) $ in Millions | 3 Months Ended | 6 Months Ended
--- | --- | ---
Jun. 26, 2022 USD ($) lease restaurant | Jun. 27, 2021 USD ($) | Jun. 26, 2022 USD ($) lease restaurant | Jun. 27, 2021 USD ($)
Lessee, Lease, Description [Line Items] |  |  |  |
Sublease income | $ 3.0 | $ 3.3 | $ 6.0 | $ 6.1
Number of domestic leases for which the Company is contingently liable | lease | 62 |  | 62 |
Estimated maximum amount of undiscounted payments in the event of nonpayment by primary lessees | $ 10.2 |  | $ 10.2 |
United Kingdom franchise-owned restaurants |  |  |  |
Lessee, Lease, Description [Line Items] |  |  |  |
Number of units leased and subleased | restaurant | 436 |  | 436 |
Initial lease terms on franchised sites | 15 years |  | 15 years |

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