Restructuring and Other Related Charges (Narrative) (Detail) - T21	3 Months Ended
Mar. 31, 2022 employee
Restructuring Cost and Reserve [Line Items]
Expected number of positions eliminated	45
Number of positions eliminated	40

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

No definition available.

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration