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Subsequent Events (Details) $ in Thousands				1 Months Ended	9 Months Ended
Subsequent Events (Details) $ in Thousands	Nov. 09, 2021 USD ($)	Sep. 30, 2021 USD ($) franchise_location	Sep. 29, 2021 USD ($)	Nov. 09, 2021 USD ($) franchise_location	Sep. 25, 2021 USD ($)	Sep. 26, 2020 USD ($)
Subsequent Event [Line Items]
Cash used in business acquisitions, net of cash acquired					$ 442,488	$ (8,575)
Subsequent Event \| 2021-01 Senior Notes \| Senior notes
Subsequent Event [Line Items]
Debt issued			$ 450,000
Interest rate			2.791%
Subsequent Event \| Revolving Credit Facility \| Driven Holdings Revolving Credit Facility
Subsequent Event [Line Items]
Repayment of debt			$ 247,000
Draw down on debt	$ 10,000
CarStar \| Subsequent Event
Subsequent Event [Line Items]
Number of businesses acquired \| franchise_location		10
Cash used in business acquisitions, net of cash acquired		$ 31,000
Magic Tunnel Car Wash \| Subsequent Event
Subsequent Event [Line Items]
Number of businesses acquired \| franchise_location				20
Cash used in business acquisitions, net of cash acquired				$ 123,000