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v3.25.2

Debt - Additional Information (Detail) |  |  | 6 Months Ended | 12 Months Ended |
--- | --- | --- | --- | --- | ---
Sep. 30, 2024 USD ($) | Sep. 30, 2023 USD ($) | Jun. 30, 2025 USD ($) testingPeriod | Jun. 30, 2024 USD ($) | Dec. 31, 2024 USD ($) | Jun. 30, 2022 USD ($)
Debt Instrument [Line Items] |  |  |  |  |  |
Repayments of long-term debt |  |  | $ 250,000,000.0 | $ 237,500,000 |  |
Leverage ratio covenant period |  |  | 12 months |  |  |
Line of Credit | Term Loans Due 2024 |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |
Optional line of credit limit increase |  |  | $ 450,000,000.0 |  |  |
Line of Credit | Revolving Credit Facility |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |
Credit facility maximum borrowing capacity |  |  | 900,000,000.0 |  |  |
Available capacity |  |  | 880,600,000 |  |  |
Debt, gross |  |  | $ 19,400,000 |  | $ 9,500,000 |
Line of Credit | Revolving Credit Facility | Pentair, Pentair Finance S.à r.l (“PFSA“) |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |
Number of testing periods | testingPeriod |  |  | 4 |  |  |
Line of Credit | Revolving Credit Facility | Minimum |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |
Debt covenant, unrestricted cash |  |  | $ 5,000,000.0 |  |  |
Debt agreement financial covenant, leverage ratio |  |  | 1.00 |  |  |
EBITDA ratio for debt |  |  | 1.00 |  |  |
Line of Credit | Revolving Credit Facility | Minimum | Pentair, Pentair Finance S.à r.l (“PFSA“) |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |
Debt agreement financial covenant, leverage ratio |  |  | 4.25 |  |  |
Line of Credit | Revolving Credit Facility | Maximum |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |
Debt covenant, unrestricted cash |  |  | $ 250,000,000.0 |  |  |
Debt agreement financial covenant, leverage ratio |  |  | 3.75 |  |  |
EBITDA ratio for debt |  |  | 3.00 |  |  |
Line of Credit | Revolving Credit Facility | Maximum | Pentair, Pentair Finance S.à r.l (“PFSA“) |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |
Debt agreement financial covenant, leverage ratio |  |  | 1.00 |  |  |
Term Loans |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |
Repayments of principal in next twelve months |  |  | $ 19,300,000 |  |  |
Term Loans | 5-year Term Loan Facility |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |
Debt, gross |  |  | 575,000,000.0 |  | 825,000,000.0 |
Unsecured Debt | 5-year Term Loan Facility |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |
Debt, principal amount |  |  |  |  |  | $ 1,000,000,000
Debt installment payment amount | $ 12,500,000 | $ 6,300,000 |  |  |  |
Repayments of long-term debt |  |  |  |  | $ 162,500,000 |
Debt, gross |  |  | 575,000,000 |  |  |
Other Credit Facilities |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |
Credit facility maximum borrowing capacity |  |  | 20,900,000 |  |  |
Borrowings outstanding |  |  | $ 0 |  |  |

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- Definition 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. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02(22)) -SubTopic 10 -Topic 210 -Publisher FASB -URI https://asc.fasb.org/1943274/2147480566/210-10-S99-1 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Topic 942 -SubTopic 210 -Name Accounting Standards Codification -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-03(16)) -Publisher FASB -URI https://asc.fasb.org/1943274/2147478546/942-210-S99-1 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Topic 470 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 4 -Subparagraph (b)(1) -Publisher FASB -URI https://asc.fasb.org/1943274/2147481139/470-20-50-4 + Details
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- Definition Line items represent financial concepts included in a table. 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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. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02(22)) -SubTopic 10 -Topic 210 -Publisher FASB -URI https://asc.fasb.org/1943274/2147480566/210-10-S99-1 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Topic 942 -SubTopic 210 -Name Accounting Standards Codification -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-03(16)) -Publisher FASB -URI https://asc.fasb.org/1943274/2147478546/942-210-S99-1 Reference 3: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 944 -SubTopic 210 -Name Accounting Standards Codification -Section S99 -Paragraph 1 -Subparagraph (SX 210.7-03(a)(16)(a)(2)) -Publisher FASB -URI https://asc.fasb.org/1943274/2147478777/944-210-S99-1 + Details
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