Finance and Other Receivables - Additional Information (Detail) - USD ($) $ in Millions	12 Months Ended
Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Accounts, Notes, Loans and Financing Receivable [Line Items]
Accrued interest receivable	$ 35.6	$ 29.5
Loans accounted for as troubled debt restructurings	63.1	14.1
TDRs subsequently defaulted, amount	4.1
TDRs charged-off during the period	2.0
Repossessed inventory	19.3	25.6
Proceeds from the sales of repossessed assets	$ 85.6	$ 62.4	$ 75.8
Financial Services \| Financing Receivable \| Maximum \| Credit Concentration Risk
Accounts, Notes, Loans and Financing Receivable [Line Items]
Percentage of portfolio assets	5.00%
Financial Services \| Dealer \| Wholesale
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing receivable repayment period	1 year

Financing receivable repayment period.

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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

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

Amount of financing receivable modified as troubled debt restructuring.

+ References

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- Definition

Amount of financing receivable modified as troubled debt restructuring within previous 12 months, with subsequent payment default.

+ References

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- Definition

Reflects the amount of the write-down related to a troubled debt restructuring.

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- Definition

Carrying amount as of the balance sheet date of interest earned but not received. Also called accrued interest or accrued interest receivable.

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- Definition

Carrying amount as of the balance sheet date of assets other than real property that were received in full or partial satisfaction of a debt arrangement through foreclosure proceedings or defeasance.

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The cash inflow from the sale assets received in full or partial satisfaction of a receivable including real and personal property; equity interests in corporations, partnerships, and joint ventures; and beneficial interests in trusts. Foreclosed assets also include loans that are treated as if the underlying collateral had been foreclosed because the institution has taken possession of the collateral, even though legal foreclosure or repossession proceedings have not taken place.

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