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Contingencies - Additional Information (Detail) $ in Millions | 3 Months Ended | 5 Months Ended | 6 Months Ended |
--- | --- | --- | --- | ---
Jun. 30, 2019 USD ($) | Jul. 31, 2018 Claim | Jun. 30, 2019 USD ($) Claim | Dec. 31, 2018 USD ($)
Loss Contingencies [Line Items] |  |  |  |
Number of arbitration claims filed | Claim |  | 310 |  |
Number of expected individual arbitrations sent back to state court | Claim |  |  | 65 |
FTC Agreement [Member] |  |  |  |
Loss Contingencies [Line Items] |  |  |  |
Litigation settlement, amount awarded to other party |  |  | $ 30.0 |
Litigation pre-tax settlement charge | $ 30.0 |  |  |
Other Accrued Expenses [Member] |  |  |  |
Loss Contingencies [Line Items] |  |  |  |
Accrual for legal fees and settlements | $ 30.8 |  | $ 30.8 | $ 6.1

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- Definition Amount awarded to other party in judgment or settlement of litigation. + References No definition available. + Details
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- Definition Amount of loss contingency liability. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 450 -SubTopic 20 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=118942415&loc=d3e14326-108349 + Details
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- Details
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