Revenue and Related Matters - Schedule of Contract with Customer, Asset and Liability (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2024	Sep. 30, 2023	Sep. 30, 2024	Sep. 30, 2023	Dec. 31, 2023
Assets:
Fees receivable, gross	$ 1,314,754		$ 1,314,754		$ 1,610,228
Contract assets recorded in Prepaid expenses and other current assets	31,977		31,977		28,791
Contract liabilities:
Deferred revenues (current liability)	2,562,139		2,562,139		2,640,515
Non-current deferred revenues recorded in Other liabilities	24,398		24,398		33,490
Total contract liabilities	2,586,537		2,586,537		$ 2,674,005
Revenue recognized previously attributable to deferred revenues	$ 1,100,000	$ 1,000,000	$ 2,100,000	$ 1,900,000