Notes Payable and Indebtedness - Summary (Details) $ in Millions	12 Months Ended
	Dec. 31, 2021 USD ($)	Dec. 20, 2021	Dec. 31, 2020 USD ($)		Feb. 08, 2019
Debt maturing within one year:
Principal amount	$ 28.1		$ 25.3
Debt issuance costs and discount	0.0		0.0
Carrying value	28.1		25.3
Debt maturing after one year:
Principal amount	3,794.8		3,355.7
Debt issuance costs and discount	78.1		99.9
Carrying value	3,716.7		3,255.8	[1]
Total debt
Principal amount	3,822.9		3,381.0
Debt issuance costs and discount	78.1		99.9
Carrying value	3,744.8		3,281.1
Term Loan Facility | Line of Credit
Debt maturing after one year:
Principal amount	2,754.8		2,485.7
Debt issuance costs and discount	64.5		77.1
Carrying value	2,690.3		2,408.6
Term Loan Facility | Line of Credit | Secured Debt
Debt maturing within one year:
Principal amount	28.1		25.3
Debt issuance costs and discount	0.0		0.0
Carrying value	28.1		25.3
Revolving facility | Line of Credit | Revolving Credit Facility
Debt maturing after one year:
Principal amount	160.0		0.0
Debt issuance costs and discount	0.0		0.0
Carrying value	$ 160.0		0.0
Total debt
Maximum ratio of first lien net indebtedness to consolidated EBITDA	6.75
Applicable threshold for maximum ratio of first lien net indebtedness to consolidated EBITDA (as a percent)	35.00%
5.000% Senior Unsecured Notes Due 2029 | Unsecured Debt Excluding Current Maturities
Debt maturing after one year:
Principal amount	$ 460.0		0.0
Debt issuance costs and discount	6.8		0.0
Carrying value	$ 453.2		0.0
5.000% Senior Unsecured Notes Due 2029 | Unsecured Debt
Total debt
Interest rate on debt instrument (as a percent)	5.00%	5.00%
6.875% Senior Secured Notes Due 2026 | Secured Debt
Debt maturing after one year:
Principal amount	$ 420.0		420.0
Debt issuance costs and discount	6.8		8.2
Carrying value	$ 413.2		$ 411.8
Total debt
Interest rate on debt instrument (as a percent)	6.875%	6.875%	6.875%		6.875%
6.875% Senior Secured Notes Due 2026 | Unsecured Debt
Total debt
Interest rate on debt instrument (as a percent)					6.875%
10.250% Senior Unsecured Notes Due 2027 | Unsecured Debt Excluding Current Maturities
Debt maturing after one year:
Principal amount	$ 0.0		$ 450.0
Debt issuance costs and discount	0.0		14.6
Carrying value	0.0		$ 435.4
10.250% Senior Unsecured Notes Due 2027 | Unsecured Debt
Total debt
Principal amount	$ 437.5
Interest rate on debt instrument (as a percent)		10.25%	10.25%		10.25%

[1] See discussion in Note 1 - Basis of Presentation and Description of Business for further detail regarding the elimination of the International lag reporting.