Amortized Cost Basis of Finance Receivables and Charge-offs by Credit Quality Indicator and Portfolio Class (Detail) - Financial Services - USD ($) $ in Millions | Mar. 31, 2023 | Dec. 31, 2022 |
Financing Receivable, Recorded Investment [Line Items] | | |
Financed Receivables, By Origination Year, Loans | $ 3,416.6 | $ 2,978.3 |
Financing Receivable Originated In Current Fiscal Year | 1,203.9 | 4,662.3 |
Financed Receivables, By Origination Year, Current Fiscal Year | 4,433.2 | 2,783.1 |
Financing Receivable, Originated One Year before Current Fiscal Year | 2,547.1 | 1,802.9 |
Financing Receivable, Originated Two Years before Current Fiscal Year | 1,612 | 988 |
Financing Receivable, Originated Three Years before Current Fiscal Year | 854.6 | 378.5 |
Financed Receivables, By Origination Year, Prior | 450.3 | 194.5 |
Finance Receivables, Total | 14,517.7 | 13,787.6 |
Charge Offs Of Finance Receivables | | |
Financing Receivable, Recorded Investment [Line Items] | | |
Financed Receivables, By Origination Year, Loans | 0 | |
Financing Receivable Originated In Current Fiscal Year | 0 | |
Financed Receivables, By Origination Year, Current Fiscal Year | 1.8 | |
Financing Receivable, Originated One Year before Current Fiscal Year | 0.7 | |
Financing Receivable, Originated Two Years before Current Fiscal Year | 0.5 | |
Financing Receivable, Originated Three Years before Current Fiscal Year | 0.1 | |
Financed Receivables, By Origination Year, Prior | 0.3 | |
Finance Receivables, Total | 3.4 | |
Dealer | | |
Financing Receivable, Recorded Investment [Line Items] | | |
Financed Receivables, By Origination Year, Loans | 3,416.6 | 2,978.3 |
Financing Receivable Originated In Current Fiscal Year | 145.3 | 609.7 |
Financed Receivables, By Origination Year, Current Fiscal Year | 588.7 | 348.6 |
Financing Receivable, Originated One Year before Current Fiscal Year | 328.6 | 223.1 |
Financing Receivable, Originated Two Years before Current Fiscal Year | 208.4 | 241.7 |
Financing Receivable, Originated Three Years before Current Fiscal Year | 221.7 | 120.8 |
Financed Receivables, By Origination Year, Prior | 208.6 | 121.8 |
Finance Receivables, Total | 5,117.9 | 4,644 |
Dealer | Wholesale | | |
Financing Receivable, Recorded Investment [Line Items] | | |
Financed Receivables, By Origination Year, Loans | 3,251.9 | 2,772.1 |
Finance Receivables, Total | 3,251.9 | 2,772.1 |
Dealer | Wholesale | Performing | | |
Financing Receivable, Recorded Investment [Line Items] | | |
Financed Receivables, By Origination Year, Loans | 3,244.4 | 2,766 |
Finance Receivables, Total | 3,244.4 | 2,766 |
Dealer | Wholesale | Watch | | |
Financing Receivable, Recorded Investment [Line Items] | | |
Financed Receivables, By Origination Year, Loans | 7.5 | 6.1 |
Finance Receivables, Total | 7.5 | 6.1 |
Dealer | Retail | | |
Financing Receivable, Recorded Investment [Line Items] | | |
Financed Receivables, By Origination Year, Loans | 164.7 | 206.2 |
Financing Receivable Originated In Current Fiscal Year | 145.3 | 609.7 |
Financed Receivables, By Origination Year, Current Fiscal Year | 588.7 | 348.6 |
Financing Receivable, Originated One Year before Current Fiscal Year | 328.6 | 223.1 |
Financing Receivable, Originated Two Years before Current Fiscal Year | 208.4 | 241.7 |
Financing Receivable, Originated Three Years before Current Fiscal Year | 221.7 | 120.8 |
Financed Receivables, By Origination Year, Prior | 208.6 | 121.8 |
Finance Receivables, Total | 1,866 | 1,871.9 |
Dealer | Retail | Performing | | |
Financing Receivable, Recorded Investment [Line Items] | | |
Financed Receivables, By Origination Year, Loans | 164.7 | 206.2 |
Financing Receivable Originated In Current Fiscal Year | 145.3 | 609.7 |
Financed Receivables, By Origination Year, Current Fiscal Year | 588.7 | 348.6 |
Financing Receivable, Originated One Year before Current Fiscal Year | 328.6 | 223.1 |
Financing Receivable, Originated Two Years before Current Fiscal Year | 208.4 | 241.7 |
Financing Receivable, Originated Three Years before Current Fiscal Year | 221.7 | 120.8 |
Financed Receivables, By Origination Year, Prior | 208.1 | 121.1 |
Finance Receivables, Total | 1,865.5 | 1,871.2 |
Dealer | Retail | At-risk | | |
Financing Receivable, Recorded Investment [Line Items] | | |
Financed Receivables, By Origination Year, Prior | 0.5 | 0.7 |
Finance Receivables, Total | 0.5 | 0.7 |
Customer Retail | | |
Financing Receivable, Recorded Investment [Line Items] | | |
Financing Receivable Originated In Current Fiscal Year | 1,058.6 | 4,052.6 |
Financed Receivables, By Origination Year, Current Fiscal Year | 3,844.5 | 2,434.5 |
Financing Receivable, Originated One Year before Current Fiscal Year | 2,218.5 | 1,579.8 |
Financing Receivable, Originated Two Years before Current Fiscal Year | 1,403.6 | 746.3 |
Financing Receivable, Originated Three Years before Current Fiscal Year | 632.9 | 257.7 |
Financed Receivables, By Origination Year, Prior | 241.7 | 72.7 |
Finance Receivables, Total | 9,399.8 | 9,143.6 |
Customer Retail | Fleet | | |
Financing Receivable, Recorded Investment [Line Items] | | |
Financing Receivable Originated In Current Fiscal Year | 938.6 | 3,572.2 |
Financed Receivables, By Origination Year, Current Fiscal Year | 3,419.2 | 2,006.9 |
Financing Receivable, Originated One Year before Current Fiscal Year | 1,849.9 | 1,327.1 |
Financing Receivable, Originated Two Years before Current Fiscal Year | 1,194.4 | 624.3 |
Financing Receivable, Originated Three Years before Current Fiscal Year | 537.4 | 211.7 |
Financed Receivables, By Origination Year, Prior | 209.1 | 66.6 |
Finance Receivables, Total | 8,148.6 | 7,808.8 |
Customer Retail | Fleet | Charge Offs Of Finance Receivables | | |
Financing Receivable, Recorded Investment [Line Items] | | |
Financed Receivables, By Origination Year, Loans | 0 | |
Financing Receivable Originated In Current Fiscal Year | 0 | |
Financed Receivables, By Origination Year, Current Fiscal Year | 1.5 | |
Financing Receivable, Originated One Year before Current Fiscal Year | 0.5 | |
Financing Receivable, Originated Two Years before Current Fiscal Year | 0.5 | |
Financing Receivable, Originated Three Years before Current Fiscal Year | 0.1 | |
Financed Receivables, By Origination Year, Prior | 0.2 | |
Finance Receivables, Total | 2.8 | |
Customer Retail | Fleet | Performing | | |
Financing Receivable, Recorded Investment [Line Items] | | |
Financing Receivable Originated In Current Fiscal Year | 938.3 | 3,558 |
Financed Receivables, By Origination Year, Current Fiscal Year | 3,397.9 | 1,981.9 |
Financing Receivable, Originated One Year before Current Fiscal Year | 1,827.2 | 1,306.5 |
Financing Receivable, Originated Two Years before Current Fiscal Year | 1,180.9 | 603.7 |
Financing Receivable, Originated Three Years before Current Fiscal Year | 527.2 | 203.4 |
Financed Receivables, By Origination Year, Prior | 204.6 | 65.6 |
Finance Receivables, Total | 8,076.1 | 7,719.1 |
Customer Retail | Fleet | Watch | | |
Financing Receivable, Recorded Investment [Line Items] | | |
Financing Receivable Originated In Current Fiscal Year | 0.3 | 7.5 |
Financed Receivables, By Origination Year, Current Fiscal Year | 2.9 | 7.3 |
Financing Receivable, Originated One Year before Current Fiscal Year | 3.6 | 1.8 |
Financing Receivable, Originated Two Years before Current Fiscal Year | 2.3 | 3.4 |
Financing Receivable, Originated Three Years before Current Fiscal Year | 0.9 | 2.4 |
Financed Receivables, By Origination Year, Prior | 1.2 | 0.5 |
Finance Receivables, Total | 11.2 | 22.9 |
Customer Retail | Fleet | At-risk | | |
Financing Receivable, Recorded Investment [Line Items] | | |
Financing Receivable Originated In Current Fiscal Year | | 6.7 |
Financed Receivables, By Origination Year, Current Fiscal Year | 18.4 | 17.7 |
Financing Receivable, Originated One Year before Current Fiscal Year | 19.1 | 18.8 |
Financing Receivable, Originated Two Years before Current Fiscal Year | 11.2 | 17.2 |
Financing Receivable, Originated Three Years before Current Fiscal Year | 9.3 | 5.9 |
Financed Receivables, By Origination Year, Prior | 3.3 | 0.5 |
Finance Receivables, Total | 61.3 | 66.8 |
Customer Retail | Owner/Operator | | |
Financing Receivable, Recorded Investment [Line Items] | | |
Financing Receivable Originated In Current Fiscal Year | 120 | 480.4 |
Financed Receivables, By Origination Year, Current Fiscal Year | 425.3 | 427.6 |
Financing Receivable, Originated One Year before Current Fiscal Year | 368.6 | 252.7 |
Financing Receivable, Originated Two Years before Current Fiscal Year | 209.2 | 122 |
Financing Receivable, Originated Three Years before Current Fiscal Year | 95.5 | 46 |
Financed Receivables, By Origination Year, Prior | 32.6 | 6.1 |
Finance Receivables, Total | 1,251.2 | 1,334.8 |
Customer Retail | Owner/Operator | Charge Offs Of Finance Receivables | | |
Financing Receivable, Recorded Investment [Line Items] | | |
Financed Receivables, By Origination Year, Loans | 0 | |
Financing Receivable Originated In Current Fiscal Year | 0 | |
Financed Receivables, By Origination Year, Current Fiscal Year | 0.3 | |
Financing Receivable, Originated One Year before Current Fiscal Year | 0.2 | |
Financing Receivable, Originated Two Years before Current Fiscal Year | 0 | |
Financing Receivable, Originated Three Years before Current Fiscal Year | 0 | |
Financed Receivables, By Origination Year, Prior | 0.1 | |
Finance Receivables, Total | 0.6 | |
Customer Retail | Owner/Operator | Performing | | |
Financing Receivable, Recorded Investment [Line Items] | | |
Financing Receivable Originated In Current Fiscal Year | 119.7 | 478.2 |
Financed Receivables, By Origination Year, Current Fiscal Year | 422.1 | 425.9 |
Financing Receivable, Originated One Year before Current Fiscal Year | 366.5 | 251.2 |
Financing Receivable, Originated Two Years before Current Fiscal Year | 207.2 | 120.9 |
Financing Receivable, Originated Three Years before Current Fiscal Year | 94.8 | 45.3 |
Financed Receivables, By Origination Year, Prior | 31.9 | 6 |
Finance Receivables, Total | 1,242.2 | 1,327.5 |
Customer Retail | Owner/Operator | Watch | | |
Financing Receivable, Recorded Investment [Line Items] | | |
Financing Receivable Originated In Current Fiscal Year | 0.2 | 1.8 |
Financed Receivables, By Origination Year, Current Fiscal Year | 2.4 | 0.9 |
Financing Receivable, Originated One Year before Current Fiscal Year | 1.3 | 0.4 |
Financing Receivable, Originated Two Years before Current Fiscal Year | 0.7 | 0.3 |
Financing Receivable, Originated Three Years before Current Fiscal Year | 0.2 | |
Financed Receivables, By Origination Year, Prior | 0.2 | 0.1 |
Finance Receivables, Total | 5 | 3.5 |
Customer Retail | Owner/Operator | At-risk | | |
Financing Receivable, Recorded Investment [Line Items] | | |
Financing Receivable Originated In Current Fiscal Year | 0.1 | 0.4 |
Financed Receivables, By Origination Year, Current Fiscal Year | 0.8 | 0.8 |
Financing Receivable, Originated One Year before Current Fiscal Year | 0.8 | 1.1 |
Financing Receivable, Originated Two Years before Current Fiscal Year | 1.3 | 0.8 |
Financing Receivable, Originated Three Years before Current Fiscal Year | 0.5 | 0.7 |
Financed Receivables, By Origination Year, Prior | 0.5 | |
Finance Receivables, Total | $ 4 | $ 3.8 |