Commitments and Contingencies (Details)	1 Months Ended
	Apr. 30, 2024 USD ($)	Sep. 30, 2024 USD ($) loan	Dec. 31, 2023 USD ($)	Apr. 30, 2023 USD ($)	Feb. 28, 2022 USD ($)	May 31, 2019 USD ($)
Commitments and Contingencies
Outstanding letters of credit collateralized by cash (loan) | loan		0
Letters of credit outstanding		$ 73,000,000.0	$ 60,200,000
Web-Hosting Service Providers
Commitments and Contingencies
Cumulative payment for arrangement		321,600,000
Web-Hosting Service Providers | Minimum
Commitments and Contingencies
Contractual obligation					$ 350,000,000
Minimum amount due in next year					80,000,000
Minimum amount due in second year					80,000,000
Minimum amount due in third year					80,000,000
Minimum amount due in fourth year					$ 80,000,000
Bikeshare Program | City Of Chicago
Commitments and Contingencies
Annual contractual obligation						$ 7,500,000
Future obligation to purchase equipment				$ 12,000,000		$ 50,000,000
Reduction in company's obligation	$ 12,000,000
Accumulated payments for amended arrangements		33,600,000
Payments to acquire equipment under purchase obligations		$ 60,500,000