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Revenue from Contracts with Customers - Additional Information (Detail) - Agreement	3 Months Ended		9 Months Ended
	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022
Disaggregation of Revenue [Line Items]
Percentage of billing expense revenues			2.00%
Sales Revenue Net [Member] | Revenue from Rights Concentration Risk [Member] | CGI [Member]
Disaggregation of Revenue [Line Items]
Percentage of total accounts receivable	21.10%	23.70%	23.70%	21.30%
Number of customers	1	1	1	1
Top Ten Customers [Member]
Disaggregation of Revenue [Line Items]
Revenue percentage of total revenue	52.00%	54.00%	54.00%	53.00%
Data and Analytics Services [Member]
Disaggregation of Revenue [Line Items]
Percent of revenue from services			100.00%

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- Definition

Customer percentage of revenue.

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Maximum percentage of billable expenses on revenue from customer.

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Number of customers accounted for revenues.

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Revenue percentage to aggregate revenue.

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For an entity that discloses a concentration risk in relation to quantitative amount, which serves as the "benchmark" (or denominator) in the equation, this concept represents the concentration percentage derived from the division.

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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.

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