Acquisitions - Additional Information (Detail) - Futures Exchange Group - USD ($) $ in Millions		12 Months Ended
Jul. 30, 2021	Dec. 31, 2021
Business Acquisition [Line Items]
Payments to acquire businesses	$ 4.9
Total consideration transferred		$ 4.9

Amount of consideration transferred, consisting of acquisition-date fair value of assets transferred by the acquirer, liabilities incurred by the acquirer, and equity interest issued by the acquirer.

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 805
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Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
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Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
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