v3.25.3

Debt (Details) - USD ($)		9 Months Ended
Debt (Details) - USD ($)	Nov. 29, 2023	Sep. 30, 2025	Mar. 27, 2025	Mar. 26, 2025	Mar. 20, 2025	Mar. 19, 2025	Dec. 31, 2024	Oct. 30, 2020
Debt Instrument [Line Items]
Commercial paper, term		3 months
Commercial paper outstanding		$ 892,000,000					$ 0
Commercial Paper
Debt Instrument [Line Items]
Weighted average interest rate		4.47%
Revolving Credit Facility
Debt Instrument [Line Items]
Outstanding borrowings		$ 0					$ 0
Revolving Credit Facility \| Syndicated Facility
Debt Instrument [Line Items]
Maximum borrowing capacity					$ 2,000,000,000	$ 1,500,000,000		$ 1,500,000,000
Commercial Paper
Debt Instrument [Line Items]
Debt instrument, face amount	$ 1,500,000,000		$ 2,000,000,000	$ 1,500,000,000
Commercial paper, term	364 days
Senior Unsecured Notes, Due February 1, 2025
Debt Instrument [Line Items]
Debt instrument, face amount		$ 500,000,000
Interest rate, stated percentage		1.75%

Carrying value as of the balance sheet date of short-term borrowings using unsecured obligations issued by banks, corporations and other borrowers to investors. The maturities of these money market securities generally do not exceed 270 days.

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- Definition

Face (par) amount of debt instrument at time of issuance.

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- Definition

Contractual interest rate for funds borrowed, under the debt agreement.

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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.

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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.

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Weighted average interest rate of debt outstanding.

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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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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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GENUINE PARTS CO 10-Q