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Segment Information - Summary of Total Assets by Reportable Operating Segment (Detail) - USD ($) $ in Thousands	Sep. 30, 2021	Dec. 31, 2020
Segment Reporting, Asset Reconciling Item [Line Items]
Total assets	$ 4,435,378	$ 4,310,732
Operating Segments [Member] | North America Segment [Member]
Segment Reporting, Asset Reconciling Item [Line Items]
Total assets	4,690,727	4,837,155
Operating Segments [Member] | EMEA Segment [Member]
Segment Reporting, Asset Reconciling Item [Line Items]
Total assets	717,883	735,771
Operating Segments [Member] | APAC Segment [Member]
Segment Reporting, Asset Reconciling Item [Line Items]
Total assets	124,908	155,761
Intersegment Eliminations [Member]
Segment Reporting, Asset Reconciling Item [Line Items]
Total assets	$ (1,098,140)	$ (1,417,955)

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- Definition

Sum of the carrying amounts as of the balance sheet date of all assets that are recognized. Assets are probable future economic benefits obtained or controlled by an entity as a result of past transactions or events.

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