Basis of Presentation - Allowance for Credit Losses (Detail) - Trade Receivables $ in Millions	6 Months Ended
Jun. 30, 2020 USD ($)
Financing Receivable Allowance For Credit Losses [Line Items]
Beginning Balance December 31, 2019	$ 20.5
Credit Loss Expense for the Period	5.9
Write offs During the Period	(1.1)
Ending Balance June 30, 2020	25.5
ASC 326
Financing Receivable Allowance For Credit Losses [Line Items]
Additional Allowance Recognized Due to Adoption of Topic ASC326	$ 0.2

Financing receivable allowance for credit losses additional allowance recognized.

No definition available.

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- Definition

Amount of allowance for credit loss on financing receivable. Excludes allowance for financing receivable covered under loss sharing agreement.

+ 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.

+ References

No definition available.

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- Definition

Amount of writeoff of financing receivable, charged against allowance for credit loss.

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- Definition

Amount of credit loss expense (reversal of expense) for financing receivable.

+ References

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