CAPITAL STOCK - Summary of Restricted Stock and Restricted Stock Unit Award Activity (Detail) - USD ($)		12 Months Ended
		Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Restricted Stock
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Compensation expense recognized during the period		$ 16,300,000	$ 15,800,000	$ 22,900,000
Fair value of vested restricted stock held by:		10,400,000	15,900,000	11,000,000
Income tax benefit recognized upon vesting of restricted stock awards held by:		$ 900,000	$ 2,800,000	$ 1,100,000
Number of restricted stock unit awards that vested during the period		780,000	950,000	620,000
Restricted Stock | CUSA Employees
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Compensation expense recognized during the period	[1]	$ 15,100,000	$ 14,800,000	$ 22,000,000
Fair value of vested restricted stock held by:		9,100,000	15,300,000	9,700,000
Income tax benefit recognized upon vesting of restricted stock awards held by:		600,000	2,700,000	800,000
Restricted Stock | Holdings Directors
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Compensation expense recognized during the period		1,200,000	1,000,000	900,000
Fair value of vested restricted stock held by:		1,300,000	600,000	1,300,000
Income tax benefit recognized upon vesting of restricted stock awards held by:		300,000	100,000	300,000
Restricted Stock Units (RSUs)
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Compensation expense recognized during the period	[1]	8,700,000	5,700,000	6,400,000
Fair value of vested restricted stock held by:		1,800,000	1,700,000	4,100,000
Income tax benefit recognized upon vesting of restricted stock awards held by:		$ (800,000)	$ 0	$ 700,000
Number of restricted stock unit awards that vested during the period		140,000	100,000	230,000
Accumulated dividends paid upon vesting of restricted stock unit awards		$ 200,000	$ 300,000	$ 100,000

[1] The former CEO of Holdings retired on December 31, 2021 and all of his outstanding unvested restricted stock units vested upon his retirement in accordance with his employment agreement. Holdings recorded incremental compensation expense of $2.4 related to the accelerated vesting of these awards during the year ended December 31, 2021.