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Revenue from Contracts with Customers - Additional Information (Detail) - Agreement	3 Months Ended
	Mar. 31, 2022	Mar. 31, 2021
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 revenues	17.80%	15.00%
Number of customers	1	1
Top Ten Customers [Member]
Disaggregation of Revenue [Line Items]
Revenue percentage of total revenue	51.00%	47.00%
Data and Analytics Services [Member]
Disaggregation of Revenue [Line Items]
Percent of revenue from services	100.00%

X

- Definition

Customer percentage of revenue.

+ References

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+ Details

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- Definition

Maximum percentage of billable expenses on revenue from customer.

+ References

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- Definition

Number of customers accounted for revenues.

+ References

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X

- Definition

Revenue percentage to aggregate revenue.

+ References

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- Definition

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.

+ References

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- Definition

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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