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v3.19.1

Revenue - Additional Information (Detail) $ in Millions | 3 Months Ended |
--- | --- | ---
Mar. 31, 2019 USD ($) Cloudoffering Employee Service | Dec. 31, 2018 USD ($)
Revenue [Line Items] |  |
Contract asset | $ 38.2 | $ 40.0
Revenue expected to be recognized, amount | $ 785.2 |
Remaining performance obligation, description of practical expedient | In accordance with the practical expedient provided in ASC Topic 606, performance obligations that are billed and recognized as they are delivered, primarily professional services contracts that are on a time and materials basis, are excluded from the transaction price for remaining performance obligations disclosed above. |
Cloud Revenue [Member] |  |
Revenue [Line Items] |  |
Number of cloud offering delivering solution | Cloudoffering | 2 |
Powerpay [Member] | Maximum [Member] |  |
Revenue [Line Items] |  |
Number of employees generating revenue from recurring fees | Employee | 20 |
Bureau Revenue [Member] |  |
Revenue [Line Items] |  |
Number of primary service lines delivering solutions | Service | 3 |

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