Organization and Summary of Significant Accounting Policies (Details Textual)	12 Months Ended
	Jun. 28, 2020 USD ($) Subsidiary Joint_Venture Segment Associates shares	Jun. 30, 2019 USD ($) shares	Jul. 01, 2019 USD ($)
Organization And Summary Of Significant Accounting Policies [Line Items]
Number of reporting segments related to STRATTEC Security Corporation | Segment	1
Operating lease right-of-use asset	$ 3,753,000
Operating lease obligation	$ 3,753,000
Fiscal year duration	364 days	364 days
Allowance for doubtful accounts receivable	$ 500,000	$ 500,000
Property, plant and equipment impairment	$ 0	0
Operating lease, existence of option to extend	true
Operating lease, renewal Term	5 years
Operating lease, expiration term	2023-10
Operating lease expense	$ 461,000
Rental expense		773,000
Number of full time associates | Associates	3,831
Number of associates represented by labor union | Associates	200
Percentage of associate represent by labor union	5.20%
Research and development expenditures	$ 9,800,000	$ 13,800,000
Gain loss from asset returns related to termination of qualified pension plan	$ 434,000
Options, granted | shares	0	0
Employee Stock Option
Organization And Summary Of Significant Accounting Policies [Line Items]
Options expires after date of grant	10 years
Omnibus Stock Incentive Plan
Organization And Summary Of Significant Accounting Policies [Line Items]
Share based compensation arrangement by share based payment award number of shares authorized | shares	1,850,000
Shares of common stock available for grant | shares	116,334
Other Miscellaneous Income, Net
Organization And Summary Of Significant Accounting Policies [Line Items]
Value-added tax adjustment	$ 450,000
Minimum
Organization And Summary Of Significant Accounting Policies [Line Items]
Payment generally occurs after shipment date	45 days
Minimum | Employee Stock Option
Organization And Summary Of Significant Accounting Policies [Line Items]
Vesting period after the date of grant	1 year
Minimum | Restricted stock
Organization And Summary Of Significant Accounting Policies [Line Items]
Vesting period after the date of grant	1 year
Minimum | New Vehicle Production | Long-term Supply Agreements
Organization And Summary Of Significant Accounting Policies [Line Items]
Production period	4 years
Minimum | Service Parts Production | Long-term Supply Agreements
Organization And Summary Of Significant Accounting Policies [Line Items]
Production period	10 years
Maximum
Organization And Summary Of Significant Accounting Policies [Line Items]
Payment generally occurs after shipment date	90 days
Maximum | Employee Stock Option
Organization And Summary Of Significant Accounting Policies [Line Items]
Vesting period after the date of grant	4 years
Maximum | Restricted stock
Organization And Summary Of Significant Accounting Policies [Line Items]
Vesting period after the date of grant	5 years
Maximum | New Vehicle Production | Long-term Supply Agreements
Organization And Summary Of Significant Accounting Policies [Line Items]
Production period	6 years
Maximum | Service Parts Production | Long-term Supply Agreements
Organization And Summary Of Significant Accounting Policies [Line Items]
Production period	15 years
ASU 2016-02
Organization And Summary Of Significant Accounting Policies [Line Items]
Operating lease right-of-use asset			$ 4,100,000
Operating lease obligation			4,100,000
Finance lease obligation			$ 0
COVID-19
Organization And Summary Of Significant Accounting Policies [Line Items]
Reduction in sales	$ 78,000,000
SAL, LLC
Organization And Summary Of Significant Accounting Policies [Line Items]
STRATTEC's percentage ownership in joint venture	51.00%
VAST LLC
Organization And Summary Of Significant Accounting Policies [Line Items]
STRATTEC's percentage ownership in joint venture	33.33%
VAST LLC | CHINA
Organization And Summary Of Significant Accounting Policies [Line Items]
Number of wholly owned subsidiaries | Subsidiary	4
VAST LLC | BRAZIL
Organization And Summary Of Significant Accounting Policies [Line Items]
Number of wholly owned subsidiaries | Subsidiary	1
VAST LLC | INDIA
Organization And Summary Of Significant Accounting Policies [Line Items]
Number of joint venture entities | Joint_Venture	1