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Business Combinations - Additional Information (Detail) $ in Millions		3 Months Ended
	Mar. 01, 2021 USD ($)	Mar. 31, 2021 USD ($) Segment	Mar. 31, 2020 USD ($)
Business Acquisition [Line Items]
Number of operating segment | Segment		1
Number of reportable segment | Segment		1
Total revenue		$ 234.5	$ 222.7
Ascender HCM Pty Ltd. [Member]
Business Acquisition [Line Items]
Percentage of voting interest	100.00%
Purchase price	$ 359.6
Total revenue		$ 6.7
Ascender HCM Pty Ltd. [Member] | Other Expense, Net [Member]
Business Acquisition [Line Items]
Gain on forward foreign currency contract	$ 4.2

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Percentage of voting equity interests acquired at the acquisition date in the business combination.

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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.

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Amount of gain (loss) from the increase (decrease) in fair value of foreign currency derivatives and nonderivative instruments designated as fair value hedging instruments which were recognized in earnings, net of offsets by the gain (loss) on the hedged item to the extent that the fair value hedge was determined to be effective.

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Number of operating segments. An operating segment is a component of an enterprise: (a) that engages in business activities from which it may earn revenues and incur expenses (including revenues and expenses relating to transactions with other components of the same enterprise), (b) whose operating results are regularly reviewed by the enterprise's chief operating decision maker to make decisions about resources to be allocated to the segment and assess its performance, and (c) for which discrete financial information is available. An operating segment may engage in business activities for which it has yet to earn revenues, for example, start-up operations may be operating segments before earning revenues.

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