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Retirement Benefit Plans (Details) - USD ($) $ in Millions | 12 Months Ended
--- | ---
Dec. 29, 2018 | Dec. 30, 2017 | Dec. 31, 2016
Schedule Defined Contribution Benefit Plan |  |  |
Percentage match by company applicable to first 3 percent of employee's contribution | 100.00% |  |
Maximum percentage of employee's eligible compensation eligible for 100% match (in hundredths) | 3.00% |  |
Percentage match by company applicable to next 3 percent of employee's contribution | 50.00% |  |
Minimum percentage of employee's compensation eligible for 50% match | 3.00% |  |
Maximum percentage of employee's compensation eligible for 50% match | 6.00% |  |
Company maximum match as a percentage of eligible compensation (in hundredths) | 4.50% |  |
Defined contribution plan, cost recognized | $ 8.5 | $ 7.4 | $ 6.6

X
- Definition Represents the maximum company match as a percentage of eligible compensation to be paid by the entity in a defined contribution plan. + References No definition available. + Details
Name: | tsco_CompanyMaximumMatchAsPercentageOfEligibleCompensation
Namespace Prefix: | tsco_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | duration

X
- Definition Represents the maximum percentage of employee's compensation eligible for 100% match to be paid by the entity in a defined contribution plan. + References No definition available. + Details
Name: | tsco_MaximumPercentageOfEmployeesCompensationEligibleFor100Match
Namespace Prefix: | tsco_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | duration

X
- Definition Represents the maximum percentage of employee's compensation eligible for 50% match to be paid by the entity in a defined contribution plan. + References No definition available. + Details
Name: | tsco_MaximumPercentageOfEmployeessCompensationEligibleFor50Match
Namespace Prefix: | tsco_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | duration

X
- Definition Represents the minimum percentage of employee's compensation eligible for 50% match to be paid by the entity in a defined contribution plan. + References No definition available. + Details
Name: | tsco_MinimumPercentageofEmployeesCompensationEligibleFor50Match
Namespace Prefix: | tsco_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | duration

X
- Definition Represents the percentage matched by company in a defined benefit plan, applicable to 0-3% of employee's contribution. + References No definition available. + Details
Name: | tsco_PercentageMatchByCompanyApplicableToFirst3PercentOfEmployeesContribution
Namespace Prefix: | tsco_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | duration

X
- Definition Represents the percentage matched by company in a defined benefit plan, applicable to the next 3-6% of employee's contribution. + References No definition available. + Details
Name: | tsco_PercentageMatchByCompanyApplicableToNext3PercentOfEmployeesContribution
Namespace Prefix: | tsco_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | duration

X
- References No definition available. + Details
Name: | tsco_ScheduleDefinedContributionBenefitPlanLineItems
Namespace Prefix: | tsco_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Amount of cost for defined contribution plan. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 70 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=49170846&loc=d3e28014-114942 + Details
Name: | us-gaap_DefinedContributionPlanCostRecognized
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration