Share-Based Compensation - Summary of Global Employee Stock Purchase Plan Activity (Detail) - HCM Global Employee Stock Purchase Plan [Member] - Common Stock [Member]	3 Months Ended
Mar. 31, 2021 $ / shares shares
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares Issued \| shares	39,484
Purchase Price (per share) \| $ / shares	$ 71.63

Number of new stock issued during the period.

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-Name Accounting Standards Codification
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-Publisher FASB
-Name Accounting Standards Codification
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Namespace Prefix:	us-gaap_
Data Type:	xbrli:sharesItemType
Balance Type:	na
Period Type:	duration