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INCOME TAXES (Tables)
12 Months Ended
Dec. 31, 2023
Income Tax Disclosure [Abstract]  
Schedule of Components of Income Tax Expense
The components of the provision for income taxes attributable to operations consist of the following (in millions):
 Year Ended December 31,
 202320222021
Current:   
Federal$126.3 $116.3 $61.3 
State36.6 31.2 24.6 
Foreign0.9 0.7 1.3 
Total current163.8 148.2 87.2 
Deferred:  
Federal(31.7)(20.4)22.9 
State(2.9)(9.6)8.5 
Foreign(2.6)(1.2)(7.2)
Total deferred(37.2)(31.2)24.2 
Total provision for income taxes$126.6 $117.0 $111.4 
Schedule of Deferred Tax Assets and Liabilities
The components of deferred tax assets and liabilities consist of the following (in millions):
 December 31,
 20232022
Deferred tax assets:  
Allowance for credit losses$5.8 $3.4 
Accrued compensation
11.9 4.6 
Stock compensation
15.3 20.4 
Net operating losses
34.7 26.8 
Accrued reserve and other
5.8 6.7 
Lease liabilities
21.8 26.4 
Capitalized research and development costs92.4 45.4 
Research and development credits4.5 6.1 
Total deferred tax assets, prior to valuation allowance192.2 139.8 
Valuation allowance
(9.0)(5.2)
Total deferred tax assets, net of valuation allowance183.2 134.6 
Deferred tax liabilities:  
Deferred commission costs, net(42.3)(36.1)
Lease right-of-use assets
(16.0)(18.2)
Prepaid expenses
(4.1)(3.2)
Property and equipment, net
(25.1)(25.8)
Intangible assets, net
(128.1)(117.8)
Total deferred tax liabilities(215.6)(201.1)
Net deferred tax liabilities$(32.4)$(66.5)
Schedule of Effective Income Tax Rate Reconciliation
The Company’s provision for income taxes resulted in effective tax rates that varied from the statutory federal income tax rate as follows (in millions):
 Year Ended December 31,
 202320222021
Expected federal income tax provision at statutory rate$105.3 $102.1 $84.8 
State income taxes, net of federal benefit27.4 21.5 21.0 
Increase (decrease) in valuation allowance
1.9 (0.5)(5.0)
Research credits(20.2)(17.5)(13.1)
Excess tax benefit(5.9)(1.8)(10.9)
Tax reserves4.2 1.5 (12.8)
Nondeductible compensation8.8 11.4 10.4 
International restructuring0.1 (3.9)34.9 
Other adjustments5.0 4.2 2.1 
Income tax expense
$126.6 $117.0 $111.4 
Schedule of Unrecognized Tax Benefits
The following table summarizes the activity related to the Company’s unrecognized tax benefits (in millions):
Unrecognized tax benefit as of December 31, 2020$28.9 
Increase for current year tax positions3.1 
Decrease for prior year tax positions(5.4)
Decrease for settlements with taxing authorities(9.9)
Expiration of the statute of limitation for assessment of taxes(1.9)
Unrecognized tax benefit as of December 31, 202114.8 
Increase for current year tax positions3.4 
Increase for prior year tax positions0.3 
Expiration of the statute of limitation for assessment of taxes(2.3)
Unrecognized tax benefit as of December 31, 202216.2 
Increase for current year tax positions4.4 
Increase for prior year tax positions1.7 
Expiration of the statute of limitation for assessment of taxes(2.4)
Unrecognized tax benefit as of December 31, 2023
$19.9