The adjustment to reduce the value of existing agreements that specify the lessee's rights to use the leased property. This expense is charged when the estimates of future profits generated by the leased property are reduced.

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Restructuring (Details) $ in Millions	1 Months Ended	12 Months Ended			32 Months Ended
Restructuring (Details) $ in Millions	May 31, 2020 employee	Dec. 31, 2022 USD ($)	Dec. 31, 2021 USD ($)	Dec. 31, 2020 USD ($)	Dec. 31, 2022 USD ($)
Restructuring Cost and Reserve [Line Items]
Restructuring, reduction in full-time employees \| employee	1,800
Restructuring charges		$ 89.1	$ 112.8	$ 151.4	$ 353.3
Restructuring liabilities		0.0			$ 0.0
Impairment of long-lived assets		80.5	75.3	35.8
Impairment of leasehold		$ 8.4	$ 37.2
Contract termination
Restructuring Cost and Reserve [Line Items]
Reduction in full-time employees (in percentage)	25.00%
Restructuring charges				11.8
Employee Severance
Restructuring Cost and Reserve [Line Items]
Restructuring charges				$ 103.8