3.26.1 html 113 73 1 false 16 0 false 3 false false R1.htm 00090 - Document - Document and Entity Information Sheet http://www.siteone.com/role/DocumentDocumentAndEntityInformation Document and Entity Information Cover 1 false false R2.htm 00100 - Statement - Statements of Net Assets Available for Benefits Sheet http://www.siteone.com/role/StatementStatementsOfNetAssetsAvailableForBenefits Statements of Net Assets Available for Benefits Statements 2 false false R3.htm 00200 - Statement - Statement of Changes in Net Assets Available for Benefits Sheet http://www.siteone.com/role/StatementStatementOfChangesInNetAssetsAvailableForBenefits Statement of Changes in Net Assets Available for Benefits Statements 3 false false R4.htm 10101 - Disclosure - Description of Plan Sheet http://www.siteone.com/role/DisclosureDescriptionOfPlan Description of Plan Notes 4 false false R5.htm 10201 - Disclosure - Summary of Significant Accounting Policies Sheet http://www.siteone.com/role/DisclosureSummaryOfSignificantAccountingPolicies Summary of Significant Accounting Policies Notes 5 false false R6.htm 10301 - Disclosure - Fair Value Measurements Sheet http://www.siteone.com/role/DisclosureFairValueMeasurements Fair Value Measurements Notes 6 false false R7.htm 10401 - Disclosure - Investments that Trade at Net Asset Value as a Practical Expedient Sheet http://www.siteone.com/role/DisclosureInvestmentsThatTradeAtNetAssetValueAsPracticalExpedient Investments that Trade at Net Asset Value as a Practical Expedient Notes 7 false false R8.htm 10501 - Disclosure - Plan Termination Sheet http://www.siteone.com/role/DisclosurePlanTermination Plan Termination Notes 8 false false R9.htm 10601 - Disclosure - Income Tax Status Sheet http://www.siteone.com/role/DisclosureIncomeTaxStatus Income Tax Status Notes 9 false false R10.htm 10701 - Disclosure - Risks and Uncertainties Sheet http://www.siteone.com/role/DisclosureRisksAndUncertainties Risks and Uncertainties Notes 10 false false R11.htm 10801 - Disclosure - Related Party Transactions and Party-in-Interest Transactions Sheet http://www.siteone.com/role/DisclosureRelatedPartyTransactionsAndPartyInInterestTransactions Related Party Transactions and Party-in-Interest Transactions Notes 11 false false R12.htm 10901 - Disclosure - Schedule H, Part IV, Line 4i - Schedule of Assets (Held at End of Year) Sheet http://www.siteone.com/role/DisclosureScheduleHPartIvLine4iScheduleOfAssetsHeldAtEndOfYear Schedule H, Part IV, Line 4i - Schedule of Assets (Held at End of Year) Notes 12 false false R13.htm 20202 - Disclosure - Summary of Significant Accounting Policies (Policies) Sheet http://www.siteone.com/role/DisclosureSummaryOfSignificantAccountingPoliciesPolicies Summary of Significant Accounting Policies (Policies) Policies http://www.siteone.com/role/DisclosureSummaryOfSignificantAccountingPolicies 13 false false R14.htm 30303 - Disclosure - Fair Value Measurements (Tables) Sheet http://www.siteone.com/role/DisclosureFairValueMeasurementsTables Fair Value Measurements (Tables) Tables http://www.siteone.com/role/DisclosureFairValueMeasurements 14 false false R15.htm 30403 - Disclosure - Investments that Trade at Net Asset Value as a Practical Expedient (Tables) Sheet http://www.siteone.com/role/DisclosureInvestmentsThatTradeAtNetAssetValueAsPracticalExpedientTables Investments that Trade at Net Asset Value as a Practical Expedient (Tables) Tables http://www.siteone.com/role/DisclosureInvestmentsThatTradeAtNetAssetValueAsPracticalExpedient 15 false false R16.htm 40101 - Disclosure - Description of Plan - Contributions (Details) Sheet http://www.siteone.com/role/DisclosureDescriptionOfPlanContributionsDetails Description of Plan - Contributions (Details) Details 16 false false R17.htm 40102 - Disclosure - Description of Plan - Vesting (Details) Sheet http://www.siteone.com/role/DisclosureDescriptionOfPlanVestingDetails Description of Plan - Vesting (Details) Details 17 false false R18.htm 40103 - Disclosure - Description of Plan - Notes Receivable from Participants (Details) Notes http://www.siteone.com/role/DisclosureDescriptionOfPlanNotesReceivableFromParticipantsDetails Description of Plan - Notes Receivable from Participants (Details) Details 18 false false R19.htm 40104 - Disclosure - Description of Plan - Payment of Benefits (Details) Sheet http://www.siteone.com/role/DisclosureDescriptionOfPlanPaymentOfBenefitsDetails Description of Plan - Payment of Benefits (Details) Details 19 false false R20.htm 40105 - Disclosure - Description of Plan - Forfeited Accounts (Details) Sheet http://www.siteone.com/role/DisclosureDescriptionOfPlanForfeitedAccountsDetails Description of Plan - Forfeited Accounts (Details) Details 20 false false R21.htm 40106 - Disclosure - Description of Plan - Company Stock Fund (Details) Sheet http://www.siteone.com/role/DisclosureDescriptionOfPlanCompanyStockFundDetails Description of Plan - Company Stock Fund (Details) Details 21 false false R22.htm 40201 - Disclosure - Summary of Significant Accounting Policies (Details) Sheet http://www.siteone.com/role/DisclosureSummaryOfSignificantAccountingPoliciesDetails Summary of Significant Accounting Policies (Details) Details http://www.siteone.com/role/DisclosureSummaryOfSignificantAccountingPoliciesPolicies 22 false false R23.htm 40301 - Disclosure - Fair Value Measurements (Schedule of Plan's Assets Fair Value Hierarchy) (Details) Sheet http://www.siteone.com/role/DisclosureFairValueMeasurementsScheduleOfPlanSAssetsFairValueHierarchyDetails Fair Value Measurements (Schedule of Plan's Assets Fair Value Hierarchy) (Details) Details http://www.siteone.com/role/DisclosureFairValueMeasurementsTables 23 false false R24.htm 40401 - Disclosure - Investments that Trade at Net Asset Value as a Practical Expedient (Details) Sheet http://www.siteone.com/role/DisclosureInvestmentsThatTradeAtNetAssetValueAsPracticalExpedientDetails Investments that Trade at Net Asset Value as a Practical Expedient (Details) Details http://www.siteone.com/role/DisclosureInvestmentsThatTradeAtNetAssetValueAsPracticalExpedientTables 24 false false R25.htm 40601 - Disclosure - Income Tax Status (Details) Sheet http://www.siteone.com/role/DisclosureIncomeTaxStatusDetails Income Tax Status (Details) Details http://www.siteone.com/role/DisclosureIncomeTaxStatus 25 false false R26.htm 40801 - Disclosure - Related Party Transactions and Party-in-Interest Transactions (Details) Sheet http://www.siteone.com/role/DisclosureRelatedPartyTransactionsAndPartyInInterestTransactionsDetails Related Party Transactions and Party-in-Interest Transactions (Details) Details http://www.siteone.com/role/DisclosureRelatedPartyTransactionsAndPartyInInterestTransactions 26 false false R27.htm 40901 - Disclosure - Schedule H, Part IV, Line 4i - Schedule of Assets (Held at End of Year) (Details) Sheet http://www.siteone.com/role/DisclosureScheduleHPartIvLine4iScheduleOfAssetsHeldAtEndOfYearDetails Schedule H, Part IV, Line 4i - Schedule of Assets (Held at End of Year) (Details) Details http://www.siteone.com/role/DisclosureScheduleHPartIvLine4iScheduleOfAssetsHeldAtEndOfYear 27 false false All Reports Book All Reports site-20251231.xsd site-20251231_cal.xml site-20251231_def.xml site-20251231_lab.xml site-20251231_pre.xml site-20251231x11k.htm http://fasb.org/us-gaap-ebp/2026 http://xbrl.sec.gov/dei/2026 true true