Consolidated Statements of Cash Flows (unaudited) - USD ($) $ in Millions		6 Months Ended
		Jun. 30, 2025	Jun. 30, 2024
Operating activities
Net income		$ 419.4	$ 547.8
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization	[1]	61.4	70.3
Equity-based compensation expense		161.4	148.0
(Gain) loss on derivative instruments		44.8	(13.8)
Deferred taxes		18.7	(225.1)
Other		19.9	22.8
Changes in operating assets and liabilities:
Prepaid domain name registry fees		(43.1)	(32.7)
Accounts payable		(0.4)	(52.4)
Accrued expenses and other current liabilities		(34.7)	(39.3)
Deferred revenue		223.8	225.3
Other operating assets and liabilities		(86.6)	(58.9)
Net cash provided by operating activities		784.6	592.0
Investing activities
Maturities of short-term investments		0.0	40.0
Purchases of property and equipment		(7.7)	(7.2)
Other investing activities		(2.3)	8.1
Net cash provided by (used in) investing activities		(10.0)	40.9
Proceeds received from:
Issuance of term loans		0.0	2,752.3
Stock option exercises		6.4	3.9
Issuance of Class A common stock under Employee Stock Purchase Plans (ESPPs)	[2]	19.2	19.5
Payments made for:
Repurchases of Class A common stock		(792.5)	(649.2)
Repayment of long-term debt		(12.3)	(2,762.3)
Other financing activities		(2.5)	(10.4)
Net cash used in financing activities		(781.7)	(646.2)
Effect of exchange rate changes on cash and cash equivalents		4.8	(0.6)
Net increase (decrease) in cash and cash equivalents		(2.3)	(13.9)
Cash and cash equivalents, beginning of period		1,089.0	458.8
Cash and cash equivalents, end of period		1,086.7	444.9
Cash paid during the period for:
Interest on long-term debt, including impact of interest rate swaps		69.0	76.5
Income taxes, net of refunds received		19.9	14.1
Amounts included in the measurement of operating lease liabilities		18.1	20.5
Supplemental disclosure of non-cash transactions
Operating lease assets obtained in exchange for operating lease liabilities		$ 1.7	$ 11.4

[1] Costs and operating expenses include equity-based compensation expense as follows: Cost of revenue0.3 0.3 0.6 0.3 Technology and development43.3 39.3 84.5 76.8 Marketing and advertising8.5 7.9 16.7 15.2 Customer care5.7 5.7 10.8 11.5 General and administrative23.2 23.0 48.8 43.4 Restructuring and other— — — 0.8 Total equity-based compensation expense$81.0 $76.2 $161.4 $148.0 

[2] Employee Stock Purchase Plans include shares repurchased under the 2015 Employee Stock Purchase Plan for the six months ended 2024 and shares repurchased under the 2024 Employee Stock Purchase Plan for the six months ended 2025.