Overview and Summary of Significant Accounting Policies - Narrative (Details) $ in Millions		1 Months Ended		12 Months Ended
	Jul. 30, 2021 USD ($)	Sep. 30, 2021	Jul. 31, 2021	Dec. 31, 2022 USD ($)	Dec. 31, 2022 GBP (£)	Dec. 31, 2021 USD ($)	Dec. 31, 2020 USD ($)
Overview and Summary of Significant Accounting Policies [Line Items]
Remaining benefits received from various other programs				$ 0.7		$ 4.2	$ 3.1
Remaining maturities of highly liquid instruments				three months or less	three months or less
Percentage of non equity ownership related redeemable noncontrolling interests				56.40%	56.40%
Government assistance received [Extensible Enumeration]				Other Comprehensive Income (Loss), Net of Tax, Portion Attributable to Parent	Other Comprehensive Income (Loss), Net of Tax, Portion Attributable to Parent	Other Comprehensive Income (Loss), Net of Tax, Portion Attributable to Parent
Government assistance received				$ 2.7		$ 21.6	27.7
CEWS | GES
Overview and Summary of Significant Accounting Policies [Line Items]
Government assistance received				$ 1.4		1.9	1.2
CEWS | Pursuit
Overview and Summary of Significant Accounting Policies [Line Items]
Government assistance received						11.6	12.8
CJRS
Overview and Summary of Significant Accounting Policies [Line Items]
Employee salary reimbursement | £					£ 2,500
Employees' salaries reimbursement, percent				80.00%	80.00%
Percentage of employer matching contribution with employee gross pay		0.00%	10.00%
CJRS | GES
Overview and Summary of Significant Accounting Policies [Line Items]
Government assistance received						0.9	8.4
NOW
Overview and Summary of Significant Accounting Policies [Line Items]
Employees' salaries reimbursement, percent				85.00%	85.00%
NOW and TVL programs | GES
Overview and Summary of Significant Accounting Policies [Line Items]
Government assistance received				$ 0.6		$ 3.0	$ 2.2
Liability Based Awards
Overview and Summary of Significant Accounting Policies [Line Items]
Share based compensation arrangements requisite service period				3 years	3 years
2021 Credit Facility
Overview and Summary of Significant Accounting Policies [Line Items]
Fees	$ 14.8
Maximum borrowing capacity on credit facility	500.0
Revolving Credit Facility
Overview and Summary of Significant Accounting Policies [Line Items]
Borrowing capacity on line of credit				$ 13.3
Maximum borrowing capacity on credit facility	$ 450.0
Revolving Credit Facility | 2021 Credit Facility
Overview and Summary of Significant Accounting Policies [Line Items]
Maturity date	Jul. 30, 2026
Maximum borrowing capacity on credit facility	$ 100.0
Term Loan B | 2021 Credit Facility
Overview and Summary of Significant Accounting Policies [Line Items]
Borrowing capacity on line of credit	$ 400.0
Maturity date	Jul. 30, 2028
Loans Proceeds Offset	$ 327.0
Maximum
Overview and Summary of Significant Accounting Policies [Line Items]
Lease expiration period				29 years	29 years
Share based compensation arrangements requisite service period				3 years	3 years
Share based compensation arrangement performance period				3 years 4 months 24 days	3 years 4 months 24 days
Maximum | TVL
Overview and Summary of Significant Accounting Policies [Line Items]
Non-labor business expenses claimed, percent				30.00%	30.00%
Maximum | Stock Options
Overview and Summary of Significant Accounting Policies [Line Items]
Share based compensation arrangements requisite service period				3 years	3 years
Maximum | Equity Based Awards
Overview and Summary of Significant Accounting Policies [Line Items]
Share based compensation arrangements requisite service period				3 years	3 years
Maximum | Building
Overview and Summary of Significant Accounting Policies [Line Items]
Property, plant and equipment, useful life				40 years	40 years
Maximum | Equipment
Overview and Summary of Significant Accounting Policies [Line Items]
Property, plant and equipment, useful life				12 years	12 years
Maximum | Land
Overview and Summary of Significant Accounting Policies [Line Items]
Lease expiration period				46 years	46 years
Minimum
Overview and Summary of Significant Accounting Policies [Line Items]
Share based compensation arrangements requisite service period				1 year	1 year
Minimum | Stock Options
Overview and Summary of Significant Accounting Policies [Line Items]
Share based compensation arrangements requisite service period				1 year	1 year
Minimum | Equity Based Awards
Overview and Summary of Significant Accounting Policies [Line Items]
Share based compensation arrangements requisite service period				1 year	1 year
Minimum | Building
Overview and Summary of Significant Accounting Policies [Line Items]
Property, plant and equipment, useful life				15 years	15 years
Minimum | Equipment
Overview and Summary of Significant Accounting Policies [Line Items]
Property, plant and equipment, useful life				3 years	3 years