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Amount of unused borrowing capacity under the financing arrangement that is available to the entity as of the balance sheet date.

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No definition available.

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The net effect of fair value hedges and unamortized discounts on commercial paper and term notes.

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No definition available.

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Line of credit facility expiration month and year.

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No definition available.

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Registration expiration date

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No definition available.

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Amount, before unamortized (discount) premium and debt issuance costs, of long-term debt. Includes, but is not limited to, notes payable, bonds payable, commercial loans, mortgage loans, convertible debt, subordinated debt and other types of debt.

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Reference 1: http://www.xbrl.org/2003/role/presentationRef
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-Name Accounting Standards Codification
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- Definition

Period of time between issuance and maturity of debt instrument, in PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

+ References

No definition available.

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Amount of unused borrowing capacity under the long-term financing arrangement that is available to the entity as of the balance sheet date.

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- Definition

Amount of interest capitalized during the period.

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Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 835
-SubTopic 20
-Section 50
-Paragraph 1
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Amount of cash paid for interest. Includes, but is not limited to, payment to settle zero-coupon bond attributable to accreted interest of debt discount and debt instrument with insignificant coupon interest rate in relation to effective interest rate of borrowing attributable to accreted interest of debt discount.

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Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition

The carrying value as of the balance sheet date of the current and noncurrent portions of long-term obligations drawn from a line of credit, which is a bank's commitment to make loans up to a specific amount. Examples of items that might be included in the application of this element may consist of letters of credit, standby letters of credit, and revolving credit arrangements, under which borrowings can be made up to a maximum amount as of any point in time conditional on satisfaction of specified terms before, as of and after the date of drawdowns on the line. Includes short-term obligations that would normally be classified as current liabilities but for which (a) postbalance sheet date issuance of a long term obligation to refinance the short term obligation on a long term basis, or (b) the enterprise has entered into a financing agreement that clearly permits the enterprise to refinance the short-term obligation on a long term basis and the following conditions are met (1) the agreement does not expire within 1 year and is not cancelable by the lender except for violation of an objectively determinable provision, (2) no violation exists at the BS date, and (3) the lender has entered into the financing agreement is expected to be financially capable of honoring the agreement.

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- Definition

Amount of current borrowing capacity under the credit facility considering any current restrictions on the amount that could be borrowed (for example, borrowings may be limited by the amount of current assets), but without considering any amounts currently outstanding under the facility.

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Maximum borrowing capacity under the credit facility without consideration of any current restrictions on the amount that could be borrowed or the amounts currently outstanding under the facility.

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Borrowings and Credit Arrangements - Additional Information (Detail)	1 Months Ended	12 Months Ended
	Apr. 30, 2016 MXN	Dec. 31, 2017 USD ($)	Dec. 31, 2016 USD ($)	Dec. 31, 2015 USD ($)	Dec. 31, 2017 EUR (€)	Dec. 31, 2017 MXN
Debt Disclosure [Line Items]
Interest paid on borrowings		$ 127,400,000	$ 108,200,000	$ 101,300,000
Line of credit, maximum capacity		3,520,000,000
Line of credit, unused borrowing capacity		3,306,800,000
Syndicated loan facility
Debt Disclosure [Line Items]
Line of credit, maximum capacity		3,000,000,000
Line of credit, outstanding amount		0
Expires in June 2018 \| Syndicated loan facility
Debt Disclosure [Line Items]
Line of credit, maximum capacity		$ 1,000,000,000
Line of credit, expiry date		2018-06
Expires in June 2021 \| Syndicated loan facility
Debt Disclosure [Line Items]
Line of credit, maximum capacity		$ 1,000,000,000
Line of credit, expiry date		2021-06
Expires in June 2022 \| Syndicated loan facility
Debt Disclosure [Line Items]
Line of credit, maximum capacity		$ 1,000,000,000
Line of credit, expiry date		2022-06
PACCAR's U.S. finance subsidiary \| Medium-term Notes
Debt Disclosure [Line Items]
Debt outstanding		$ 4,450,000,000
Registration expiration		2018-11
PACCAR's European finance subsidiary \| Medium-term Notes
Debt Disclosure [Line Items]
Debt, unused borrowing capacity \| €					€ 1,343,600,000
Debt, borrowing capacity \| €					€ 2,500,000,000
Debt, renewal period		Annually through the filing of new listing particulars
PACCAR's Mexico finance subsidiary \| Commercial Paper
Debt Disclosure [Line Items]
Maximum limit of borrowing capacity \| MXN	MXN 5,000,000,000
PACCAR's Mexico finance subsidiary \| Commercial Paper \| Maximum
Debt Disclosure [Line Items]
Commercial paper expiration period	1 year
PACCAR's Mexico finance subsidiary \| Medium-term Notes
Debt Disclosure [Line Items]
Registration expiration		2021-04
Debt, unused borrowing capacity \| MXN						MXN 6,250,000,000
PACCAR's Mexico finance subsidiary \| Medium-term Notes \| Commercial Paper
Debt Disclosure [Line Items]
Debt, borrowing capacity \| MXN	MXN 10,000,000,000
Financial Services
Debt Disclosure [Line Items]
Commercial paper and term notes borrowings		$ 8,669,200,000	8,270,200,000
Fair value hedges and unamortized discounts, net		(20,900,000)	(19,300,000)
Truck, Parts and Other
Debt Disclosure [Line Items]
Capitalized interest		$ 0	$ 0	$ 0