Fair Value Measurement - Schedule of Fair Value of Assets and Liabilities Measured on Recurring Basis (Details) - USD ($) $ in Thousands	Jun. 30, 2025	Dec. 06, 2024	Jun. 30, 2024	Sep. 24, 2021	Nov. 30, 2020
2025 Notes, principal
Assets
Debt stated percentage	0.00%				0.00%
2027 Notes, principal
Assets
Debt stated percentage	0.00%			0.00%
2030 Notes, principal
Assets
Debt stated percentage	0.00%	0.00%
Fair Value, Recurring | Level 1 | Cash equivalents: | Money market funds
Assets
Cash equivalents:	$ 365,456		$ 522,618
Fair Value, Recurring | Level 1 | Restricted cash equivalents | Money market funds
Assets
Funds held for customers:	1,642,494		1,319,609
Fair Value, Recurring | Level 2 | 2025 Notes, principal
Assets
Liabilities	32,567		154,933
Fair Value, Recurring | Level 2 | 2027 Notes, principal
Assets
Liabilities	112,738		489,112
Fair Value, Recurring | Level 2 | 2030 Notes, principal
Assets
Liabilities	1,185,128		0
Fair Value, Recurring | Level 2 | Corporate bonds
Assets
Cash equivalents:	69,956		0
Short-term investments:	758,333		298,202
Funds held for customers:	486,362		937,198
Fair Value, Recurring | Level 2 | U.S. treasury securities
Assets
Short-term investments:	287,559		180,983
Funds held for customers:	868,705		342,041
Fair Value, Recurring | Level 2 | Asset-backed securities
Assets
Short-term investments:	118,236		59,363
Funds held for customers:	167,970		116,475
Fair Value, Recurring | Level 2 | Certificates of deposit
Assets
Cash equivalents:	2,216		0
Short-term investments:	15,982		38,370
Funds held for customers:	99,138		119,616
Fair Value, Recurring | Level 2 | U.S. agency securities
Assets
Short-term investments:	0		24,617
Fair Value, Recurring | Level 2 | Restricted cash equivalents | Corporate bonds
Assets
Funds held for customers:	18,929		89,082
Fair Value, Recurring | Level 2 | Municipal bonds
Assets
Funds held for customers:	$ 6,592		$ 0