CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2025	Dec. 31, 2024	Dec. 31, 2023
Cash Flows from Operating Activities:
Net income	$ 113.5	$ 175.2	$ 219.3
Adjustments to reconcile net income to net cash provided by operating activities:
Amortization and depreciation	113.5	96.3	100.3
Stock-based compensation	47.9	42.3	44.0
Deferred income taxes	44.4	31.2	26.9
Other	12.1	8.9	10.3
Changes in operating assets and liabilities, net of effects of acquisitions:
Accounts receivable	(3.8)	87.0	111.0
Prepaid expenses and income taxes	(0.9)	(8.0)	3.3
Accounts payable	16.1	(6.6)	(2.4)
Accrued payroll	9.0	(17.1)	(49.4)
Payroll tax deferral and other	(23.9)	(9.2)	(6.4)
Net cash provided by operating activities	327.9	400.0	456.9
Cash Flows from Investing Activities
Cash paid for property and equipment	(39.8)	(35.3)	(39.9)
Cash paid for acquisitions, net of cash acquired	(304.1)	0.0	0.0
Other	0.0	0.0	(0.6)
Net cash used in investing activities	(343.9)	(35.3)	(40.5)
Cash Flows from Financing Activities
Proceeds from long-term debt	421.0	0.0	571.8
Principal payments of long-term debt	(282.3)	(5.0)	(596.6)
Proceeds from employee stock purchase plan	14.2	17.2	18.9
Repurchase of common stock	(170.1)	(327.2)	(273.1)
Payment of employment taxes related to release of restricted stock awards	(8.6)	(15.8)	(18.3)
Debt issuance or amendment costs	0.0	0.0	(8.6)
Other	(3.6)	(2.4)	(5.0)
Net cash used in financing activities	(29.4)	(333.2)	(310.9)
Effect of exchange rate changes on cash and cash equivalents	1.4	(2.2)	0.1
Net Increase in Cash and Cash Equivalents	(44.0)	29.3	105.6
Cash and Cash Equivalents at Beginning of Year	205.2	175.9	70.3
Cash and Cash Equivalents at End of Year	161.2	205.2	175.9
Supplemental Disclosure of Cash Flow Information
Income taxes	7.9	33.5	44.8
Interest	$ 67.0	$ 62.6	$ 62.1