Revenue and Related Matters - Schedule of Contract with Customer, Asset and Liability (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2022	Sep. 30, 2021	Sep. 30, 2022	Sep. 30, 2021	Dec. 31, 2021
Assets:
Fees receivable, gross	$ 1,054,640		$ 1,054,640		$ 1,371,680
Contract assets recorded in Prepaid expenses and other current assets	23,474		23,474		20,054
Contract liabilities:
Deferred revenues (current liability)	2,229,648		2,229,648		2,238,035
Non-current deferred revenues recorded in Other liabilities	31,049		31,049		48,176
Total contract liabilities	2,260,697		2,260,697		$ 2,286,211
Revenue recognized previously attributable to deferred revenues	$ 931,600	$ 818,400	$ 1,800,000	$ 1,500,000