Acquisitions and Dispositions - Narrative (Details) $ in Thousands				3 Months Ended			9 Months Ended								12 Months Ended
	Apr. 27, 2021 USD ($)	Aug. 03, 2020 USD ($) country wash_center	Apr. 20, 2020 USD ($) franchise_location	Sep. 25, 2021 USD ($) franchise_location	Jun. 26, 2021 USD ($)	Dec. 26, 2020 USD ($) car_wash_site	Sep. 25, 2021 USD ($) franchise_location	Sep. 25, 2021 USD ($) franchise_location	Sep. 25, 2021 USD ($) acquisition franchise_location	Sep. 25, 2021 USD ($) car_wash_site franchise_location	Sep. 25, 2021 USD ($) maintenance_site franchise_location	Sep. 25, 2021 USD ($) collision_site franchise_location	Sep. 25, 2021 USD ($) franchise_location acquistion	Sep. 26, 2020 USD ($)	Dec. 26, 2020 USD ($)
Business Acquisition [Line Items]
Cash used in business acquisitions, net of cash acquired								$ 442,488						$ (8,575)
Payment of contingent consideration related to acquisitions								0						$ 2,783
Transaction expense				$ 1,000			$ 1,000	$ 1,000	$ 1,000	$ 1,000	$ 1,000	$ 1,000	$ 1,000
Number of countries across Europe in which entity operates | franchise_location				14			14	14	14	14	14	14	14
Reduction of goodwill				$ (1,810,085)		$ (1,727,351)	$ (1,810,085)	$ (1,810,085)	$ (1,810,085)	$ (1,810,085)	$ (1,810,085)	$ (1,810,085)	$ (1,810,085)		$ (1,727,351)
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Net loss on disposal (less than)								(1,000)
Derecognized noncontrolling interest					$ 948
Minimum
Business Acquisition [Line Items]
Deferred consideration payment period							6 months
Maximum
Business Acquisition [Line Items]
Deferred consideration payment period							1 year
Disposal Group, Disposed of by Sale, Not Discontinued Operations
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Ownership interest disposed of	70.00%
Consideration received	$ 2,000
Net loss on disposal (less than)				1,000				1,000
Derecognized noncontrolling interest								1,000
2021 Cash Wash And Maintenance Acquisitions
Business Acquisition [Line Items]
Deferred consideration				8,000			$ 8,000	8,000	$ 8,000	$ 8,000	8,000	8,000	8,000
2021 Car Wash Acquisitions
Business Acquisition [Line Items]
Number of businesses acquired									25	66
Cash used in business acquisitions, net of cash acquired								427,000
Reduction of goodwill				(101,341)			(101,341)	(101,341)	$ (101,341)	$ (101,341)	$ (101,341)	(101,341)	(101,341)
2021 Maintenance Acquisitions
Business Acquisition [Line Items]
Number of businesses acquired									4		4
Cash used in business acquisitions, net of cash acquired								7,601
Reduction of goodwill				(1,763)			(1,763)	(1,763)	$ (1,763)	(1,763)	$ (1,763)	$ (1,763)	(1,763)
2021 PC&G Acquisitions
Business Acquisition [Line Items]
Number of businesses acquired | collision_site												2
Cash used in business acquisitions, net of cash acquired								2,000
Reduction of goodwill				(94)			(94)	(94)	(94)	(94)	(94)	$ (94)	(94)
2021 Acquisitions
Business Acquisition [Line Items]
Deferred consideration				11,000			11,000	11,000	11,000	11,000	11,000	11,000	11,000
2020 Acquisitions
Business Acquisition [Line Items]
Deferred consideration				11,000		$ 5,000	11,000	11,000	$ 11,000	11,000	11,000	11,000	$ 11,000		5,000
2020 And Prior Car Wash Acquisitions
Business Acquisition [Line Items]
Payment of contingent consideration related to acquisitions								2,000
Series of Individually Immaterial Business Acquisitions
Business Acquisition [Line Items]
Number of businesses acquired | acquistion													5
Series of Individually Immaterial Business Acquisitions | Car Wash
Business Acquisition [Line Items]
Number of businesses acquired | acquisition									2
Cash used in business acquisitions, net of cash acquired								9,000
Series of Individually Immaterial Business Acquisitions | Maintenance
Business Acquisition [Line Items]
Number of businesses acquired | acquisition									3
Cash used in business acquisitions, net of cash acquired								2,000
ICWG Acquisition
Business Acquisition [Line Items]
Number of businesses acquired | wash_center		940
Number of countries across Europe in which entity operates | country		14
Reduction of goodwill		$ (781,072)		1,000			$ 1,000	1,000	$ 1,000	$ 1,000	$ 1,000	$ 1,000	$ 1,000
Fix Auto
Business Acquisition [Line Items]
Cash used in business acquisitions, net of cash acquired			$ 28,517
Reduction of goodwill			$ (19,390)
Percentage of outstanding equity acquired			100.00%
Cash acquired from acquisition			$ 2,000
Number of franchised locations acquired | franchise_location			150
Number of company-operated locations acquired | franchise_location			10
Fair value of contingent consideration			$ 2,943												4,000
Benefit to acquisition costs				$ 4,000				$ 4,000
2020 Cash Wash Acquisitions
Business Acquisition [Line Items]
Number of businesses acquired | car_wash_site						17
Cash used in business acquisitions, net of cash acquired						$ 109,000
Reduction of goodwill						$ (30,651)									$ (30,651)