INCOME TAXES - INCOME TAXES AND EFFECTIVE INCOME TAX RATE (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2025	Dec. 31, 2024	Dec. 31, 2023
Income Taxes and Effective Income Tax Rate, Amount
U.S. federal income tax rate, amount	$ 112.1	$ 125.9	$ 78.3
State and local taxes, net of federal income tax effect, amount	$ (8.7)	$ 13.4	$ 4.5
Effective Income Tax Rate Reconciliation, State and Local Jurisdiction, Contribution Greater than 50 Percent, Tax Effect [Extensible Enumeration]	ALASKA, CALIFORNIA	CALIFORNIA, HAWAII	CALIFORNIA, HAWAII
Foreign tax effects, amount	$ 2.9	$ 2.0	$ 2.7
Income Taxes and Effective Income Tax Rate, Percent
U.S. federal income tax rate (as a percent)	21.00%	21.00%	21.00%
State and local taxes, net of federal income tax effect (as a percent)	(1.60%)	2.20%	1.20%
Foreign tax effects (as a percent)	0.50%	0.30%	0.70%
Effect of cross-border tax laws, Amount
Foreign-derived intangible income, amount	$ (13.1)	$ (18.5)	$ (17.9)
Tax credits, amount	$ (0.1)	$ (0.1)	$ (0.1)
Effect of cross-border tax laws, Percent
Foreign-derived intangible income (as a percent)	(2.50%)	(3.10%)	(4.80%)
Tax credits (as a percent)
Nontaxable or nondeductible items, Amount
Share-based payment awards, amount	$ 1.0	$ 1.3	$ 2.0
Other, amount	0.1	0.1	3.3
Changes in unrecognized tax benefits, amount	(2.5)	(1.0)	3.1
Other adjustments, amount	(2.7)	(0.1)
Total income taxes	$ 89.0	$ 123.0	$ 75.9
Tax Jurisdiction of Domicile [Extensible Enumeration]	country:US	country:US	country:US
Nontaxable or nondeductible items, Percent
Share-based payment awards (as a percent)	0.30%	0.20%	0.50%
Other (as a percent)		0.10%	0.90%
Changes in unrecognized tax benefits (as a percent)	(0.50%)	(0.20%)	0.80%
Other adjustments (as a percent)	(0.50%)
Income taxes and effective income tax (as a percent)	16.70%	20.50%	20.30%
Tax adjustment	$ 18.5
Tax adjustment (as a percent)	3.50%
Effective income tax rate (as a percent)	20.10%