Life Time Group Holdings, Inc. Annual report pursuant to Section 13 and 15(d)

Related Party Transactions - Sale-Leaseback Transactions (Details)

Related Party Transactions - Sale-Leaseback Transactions (Details) $ in Thousands	12 Months Ended
	Dec. 31, 2023 USD ($) property	Dec. 31, 2022 USD ($)	Dec. 31, 2021 USD ($)	Dec. 31, 2020 property	Dec. 31, 2019 property	Dec. 31, 2018 property	Dec. 31, 2017 property
Related Party Transaction [Line Items]
Number of properties \| property	3
Operating cash flows from operating leases	$ 226,896	$ 199,762	$ 182,644
Rent expense	275,122	245,226	209,823
Limited Liability Company, Sale Leaseback Transaction \| Chief Executive Officer \| Sale Leaseback Transaction Three
Related Party Transaction [Line Items]
Ownership interest						33.00%
Related Party Sale Leaseback Transactions \| Related Party \| Sale Leaseback Transaction One
Related Party Transaction [Line Items]
Number of properties \| property				1
Operating cash flows from operating leases	2,600	2,600	2,500
Rent expense	3,000	3,000	3,000
Related Party Sale Leaseback Transactions \| Related Party \| Sale Leaseback Transaction Two
Related Party Transaction [Line Items]
Number of properties \| property					1
Operating cash flows from operating leases	2,300	2,300	2,800
Rent expense	2,600	2,600	2,600
Related Party Sale Leaseback Transactions \| Related Party \| Sale Leaseback Transaction Three
Related Party Transaction [Line Items]
Number of properties \| property						1
Operating cash flows from operating leases	1,300	1,200	1,500
Rent expense	1,400	1,400	1,400
Related Party Sale Leaseback Transactions \| Related Party \| Sale Leaseback Transaction Four
Related Party Transaction [Line Items]
Number of properties \| property							2
Operating cash flows from operating leases	6,600	6,100	6,000
Rent expense	$ 7,400	$ 7,400	$ 7,400