LONG-TERM DEBT - Additional Information (Detail) $ / shares in Units, $ in Millions				1 Months Ended				12 Months Ended
	May 01, 2023 USD ($)	Aug. 21, 2020 USD ($) Tradingday $ / shares	Apr. 20, 2020 USD ($)	May 26, 2023 USD ($)	Jun. 15, 2021 USD ($)	May 21, 2021 USD ($)	Mar. 16, 2021 USD ($)	Dec. 31, 2023 USD ($) Tradingday Agreement $ / shares	Dec. 31, 2022 USD ($)	Dec. 31, 2021 USD ($)	Dec. 31, 2020 USD ($) Tradingday
Debt Instrument [Line Items]
Interest rate								4.50%	4.50%
Legal and other fees								$ 0.5
Average interest rate on outstanding borrowings								7.10%
Multiple Consolidated Interest Expense Under Subcondition Two Of Condition Two Under Dividend Restriction								0.0175
Loss accumulated on swaps prior to the amendments								$ 5.1
Amortization of accumulated losses for amended swap agreements								(6.4)	$ 4.5	$ 4.5
Loss on debt extinguishment and refinancing								(10.7)	0.0	(6.5)
Loans Amount										35.8	$ 35.8
Restricted payments available amount								599.1
CUSA [Member]
Debt Instrument [Line Items]
Repayments of long-term debt								10.6	28.1	10.3
Payment of debt issuance costs								$ 7.5	0.0	17.3
Total Leverage Ratio, Percentage								0.25%
Debt instrument, maturity date								May 24, 2030
Proceeds, Net From Long Term Borrowing								$ 632.7
Fair value of long-term debt								1,903.8	1,771.3
Debt issuance costs								27.5	22.9
Loss on debt extinguishment and refinancing								$ 10.7	$ 0.0	$ 6.5
Interest Rate Swap
Debt Instrument [Line Items]
Number of Interest Rate Swap Agreements Amended | Agreement								3
Interest Rate Swap Agreements Three
Debt Instrument [Line Items]
Maturity Date								Dec. 31, 2026
Derivative, Notional Amount								$ 175.0
Minimum
Debt Instrument [Line Items]
Net Total Leverage Ratio								1.00%
Net Total Leverage Ratio Minimum								1.00%
Net Total Leverage Ratio Maximum								1.00%
Minimum | CUSA [Member]
Debt Instrument [Line Items]
Percentage of variable margin rate added to Eurodollar rate								0.20%
Maximum
Debt Instrument [Line Items]
Net Total Leverage Ratio								2.75%
Net Total Leverage Ratio Minimum								2.75%
Net Total Leverage Ratio Maximum								5.00%
Maximum | CUSA [Member]
Debt Instrument [Line Items]
Percentage of variable margin rate added to Eurodollar rate								0.375%
Senior Secured Credit Facility | CUSA [Member]
Debt Instrument [Line Items]
Aggregate principal amount of add-on to Senior Notes				$ 775.0
Amended Senior Secured Credit Facility | Minimum
Debt Instrument [Line Items]
Senior secured leverage ratio required								1.00%
Amended Senior Secured Credit Facility | Maximum
Debt Instrument [Line Items]
Senior secured leverage ratio required								3.50%
4.50 % Convertible Senior Notes
Debt Instrument [Line Items]
Aggregate principal amount of add-on to Senior Notes		$ 460.0
Interest rate		4.50%							4.50%	4.50%
Debt instrument, maturity date		Aug. 15, 2025
Conversion price per share, percentage		130.00%
Initial conversion price | $ / shares		$ 14.35						$ 14.35
Trading price per principal amount of notes		$ 1,000.0
Percentage of product of last reported sale price of common stock and conversion rate		98.00%
Debt conversion, description								(1) during the five business day period after any five consecutive trading day period, or the measurement period, in which the trading price per $1,000 principal amount of notes for each trading day of the measurement period was less than 98% of the product of the last reported sale price of Holdings’ common stock and the conversion rate on each such trading day; (2) if Holdings distributes to all or substantially all stockholders (i) rights options or warrants entitling them to purchase shares at a discount to the recent average trading price of Holdings’ common stock (including due to a stockholder rights plan) or (ii) Holdings’ assets or securities or rights, options or warrants to purchase the same with a per share value exceeding 10% of the trading price of Holdings’ stock, (3) upon the occurrence of specified corporate events as described further in the indenture, or (4) during any calendar quarter commencing after the calendar quarter ending on September 30, 2020 (and only during such calendar quarter), if the last reported sale price of Holdings’ common stock for at least 20 trading days during the period of 30 consecutive trading days ending on the last trading day of the immediately preceding calendar quarter is greater than or equal to $18.66 per share (130% of the initial conversion price of $14.35 per share), on each applicable trading day. Beginning May 15, 2025, holders may convert their 4.50% Convertible Senior Notes at any time prior to the close of business on the second scheduled trading day immediately preceding the maturity date. Upon conversion of the 4.50% Convertible Senior Notes, Holdings will pay or deliver cash, shares of Holdings’ common stock or a combination of cash and shares of Holdings’ common stock, at Holdings’ election.
Debt instrument, convertible, latest date								May 15, 2025
Debt instrument, convertible, threshold trading days | Tradingday		20
Debt instrument, convertible, threshold consecutive trading days | Tradingday											30
Debt instrument, convertible, conversion ratio per 1000 principal amount		69.6767
Total cost of the Hedge Transactions		$ 142.1
Warrants, per share | $ / shares		$ 22.08
Cash proceeds from the sale of the warrants		$ 89.4
4.50 % Convertible Senior Notes | Minimum
Debt Instrument [Line Items]
Sale price per share | $ / shares		$ 18.66
Debt instrument, convertible, threshold trading days | Tradingday								20
4.50 % Convertible Senior Notes | Maximum
Debt Instrument [Line Items]
Debt instrument, convertible, threshold trading days | Tradingday								30
4.875 % Senior Notes
Debt Instrument [Line Items]
Aggregate principal amount of add-on to Senior Notes					$ 755.0
Interest rate					4.875%
Tender offer amount						$ 755.0
Remaining principal amount of optional redemption						$ 755.0
Outstanding principal at the redemption price percentage						100.00%
Loss on debt extinguishment and refinancing										$ (3.9)
4.875 % Senior Notes | Unamortized Debt Issuance Costs
Debt Instrument [Line Items]
Unamortized debt issuance costs										3.3
4.875 % Senior Notes | Payment of Fees
Debt Instrument [Line Items]
Unamortized debt issuance costs										0.6
5.125% Senior Notes
Debt Instrument [Line Items]
Tender offer amount							$ 334.0
Remaining principal amount of optional redemption							$ 66.0
Outstanding principal at the redemption price percentage							100.00%
Loss on debt extinguishment and refinancing										(2.6)
5.125% Senior Notes | Unamortized Debt Issuance Costs
Debt Instrument [Line Items]
Unamortized debt issuance costs										1.2
5.125% Senior Notes | Payment of Fees
Debt Instrument [Line Items]
Unamortized debt issuance costs										$ 1.4
5.250% Senior Notes
Debt Instrument [Line Items]
Aggregate principal amount of add-on to Senior Notes					$ 765.0
Interest rate				5.25%	5.25%
Debt instrument, maturity date					Jul. 15, 2028
Debt Instrument Issue Discount					101.00%
Debt issuance costs					$ 10.7
5.875% Senior Notes
Debt Instrument [Line Items]
Aggregate principal amount of add-on to Senior Notes							$ 405.0
Interest rate				5.875%			5.875%
Disclosure of dividend restrictions associated with the debt agreement								$ 3,556.8
Debt instrument, maturity date							Mar. 15, 2026
Debt Instrument Issue Discount							101.00%	101.00%
Debt issuance costs							$ 6.0
5.875% Senior Notes | Minimum
Debt Instrument [Line Items]
Debt covenants, required minimum coverage ratio								1.00%
Actual coverage ratio								1.00%
5.875% Senior Notes | Maximum
Debt Instrument [Line Items]
Debt covenants, required minimum coverage ratio								2.00%
Actual coverage ratio								5.50%
8.750 % Senior Notes
Debt Instrument [Line Items]
Aggregate principal amount of add-on to Senior Notes	$ 100.0		$ 250.0
Interest rate	8.75%		8.75%	8.75%
Premium Paid on the Redemption of Bond								$ 2.2
Loss on extinguishment of debt	$ 3.4
Debt Instrument Accrued Interest								106.6
Debt instrument, maturity date			May 01, 2025
Debt Instrument Issue Discount	101.00%
Remaining principal amount of optional redemption								150.0
Unamortized debt issuance costs								1.2
8.750 % Senior Notes | CUSA [Member]
Debt Instrument [Line Items]
Aggregate principal amount of add-on to Senior Notes	$ 100.0
Senior Secured Notes Due 2025
Debt Instrument [Line Items]
Interest rate					8.75%
Convertible Senior Notes Due 2025
Debt Instrument [Line Items]
Interest rate					4.50%
Convertible Senior Notes
Debt Instrument [Line Items]
Fair value of long-term debt								$ 556.5	$ 439.2
8.75 % Senior Notes Due June 1, 2024 | CUSA [Member]
Debt Instrument [Line Items]
Option rates	100.00%
International Segment
Debt Instrument [Line Items]
Interest rate								4.00%
Repayments of principal loan amount								$ 4.1	$ 21.5
Prior | 8.75 % Senior Notes Due June 1, 2024 | CUSA [Member]
Debt Instrument [Line Items]
Option rates	102.188%
Revolving Credit Facility [Member] | CUSA [Member]
Debt Instrument [Line Items]
Revolving credit line, maturity date				May 26, 2028
Revolving Credit Facility [Member] | Amended Senior Secured Credit Facility | Minimum
Debt Instrument [Line Items]
Senior secured leverage ratio required								1.00%
Revolving Credit Facility [Member] | Amended Senior Secured Credit Facility | Maximum
Debt Instrument [Line Items]
Senior secured leverage ratio required								0.30%
Term Loan Credit facility
Debt Instrument [Line Items]
Percentage of variable margin rate added to Eurodollar rate								2.75%
Amount outstanding under the term loan								$ 645.1
Percentage of Variable Rate added to Secured Overnight Financing Rate								0.50%
Term Loan Credit facility | CUSA [Member]
Debt Instrument [Line Items]
Unamortized Debt Issuance Expense								$ 4.7
Lender Fees Paid on Debt Extinguishment								2.1
Debt Issuance Costs Capitalized								7.5
Original issue discount								9.8
Repayments of long-term debt								628.3
Debt issuance costs								$ 10.1
Term Loan Credit facility | Minimum
Debt Instrument [Line Items]
Net Total Leverage Ratio								1.00%
Term Loan Credit facility | Maximum
Debt Instrument [Line Items]
Net Total Leverage Ratio								2.13%
Term Loan Credit facility | Senior Secured Credit Facility
Debt Instrument [Line Items]
Quarterly principal payments due								$ 1.6
Debt instrument description of interest								SOFR for a period of 1, 3, or 6 months (depending upon the Interest Period (as defined in the Credit Agreement) chosen by CUSA) (the "Term SOFR Rate"), subject to a floor of 0.50% per annum, plus an applicable margin of 3.75% per annum
Term Loan Credit facility | Senior Secured Credit Facility | CUSA [Member]
Debt Instrument [Line Items]
Aggregate principal amount of add-on to Senior Notes				$ 650.0
Final principal payment due date				May 24, 2030
Last quarterly payment date				Dec. 31, 2030
Term Loan Credit facility | Amended Senior Secured Credit Facility
Debt Instrument [Line Items]
Percentage of variable margin rate added to Eurodollar rate								3.75%
Percentage of Variable Rate added to Federal Reserve Bank Effective Rate								1.00%
Percentage of Variable Rate added to Alternate Base Rate								1.00%
Term Loan Credit facility | 5.250% Senior Notes
Debt Instrument [Line Items]
Interest rate				5.25%
Revolving Credit Line
Debt Instrument [Line Items]
Percentage of Variable Rate added to Alternate Base Rate								1.00%
Revolving Credit Line | Senior Secured Credit Facility | CUSA [Member]
Debt Instrument [Line Items]
Aggregate principal amount of add-on to Senior Notes				$ 125.0
Revolving Credit Line | Amended Senior Secured Credit Facility
Debt Instrument [Line Items]
Percentage of variable margin rate added to Eurodollar rate								3.25%
Percentage of Variable Rate added to Alternate Base Rate								1.50%
Amount outstanding under the revolving credit line								$ 0.0
Revolving Credit Line | Amended Senior Secured Credit Facility | Minimum
Debt Instrument [Line Items]
Percentage of Variable Rate added to Secured Overnight Financing Rate								3.00%
Percentage of Variable Rate added to Alternate Base Rate								2.00%
Revolving Credit Line | Amended Senior Secured Credit Facility | Maximum
Debt Instrument [Line Items]
Percentage of Variable Rate added to Secured Overnight Financing Rate								3.50%
Percentage of Variable Rate added to Alternate Base Rate								2.50%