Stock-Based Compensation - Narrative (Details) $ in Thousands	1 Months Ended					3 Months Ended		6 Months Ended
	Mar. 31, 2025 shares	Jan. 31, 2023 shares	Jan. 31, 2022 shares	Aug. 31, 2021 shares	Jun. 30, 2021 performanceCondition shares	Jun. 30, 2025 USD ($) shares	Jun. 30, 2024 USD ($)	Jun. 30, 2025 USD ($) shares	Jun. 30, 2024 USD ($)
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Total stock-based compensation expense \| $						$ 8,896	$ 13,831	$ 21,229	$ 27,879
2021 Plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Annual increase in shares authorized, percent				5.00%
Number of additional shares authorized		6,036,000
The Plans \| Series A common stock
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Options approved for grant (in shares)						29,526,000		29,526,000
The Founders Grant
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Total stock-based compensation expense \| $						$ 2,300	6,200	$ 5,100	13,500
Stock options or restricted stock units (RSUs) \| 2021 Incentive Award Plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Award vesting period				4 years
Employee Stock Purchase Plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Options approved for grant (in shares)						6,216,000		6,216,000
Number of additional shares authorized			1,207,000	16,615,000
Restricted stock units (RSUs)
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Units vested (in shares)								1,051,000
Granted (in shares)								1,407,000
Vested and not yet released (in shares)								60,000
Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Grant Date Fair Value \| $						$ 5,700		$ 5,700
Restricted stock units (RSUs) \| 2021 Plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Award vesting period	3 years
Total stock-based compensation expense \| $						6,300	$ 6,600	$ 14,900	$ 11,600
Restricted stock units (RSUs) \| 2021 Plan \| Series A common stock
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Granted (in shares)	236,000
Restricted stock units (RSUs) \| The Plans
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Non-vested award, cost not yet recognized, period for recognition								1 year 7 months 6 days
Cost not yet recognized, outstanding awards \| $						46,200		$ 46,200
Restricted stock units (RSUs) \| The Founders Grant
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Award vesting period					5 years
Granted (in shares)					1,885,000
Grant date fair value \| $								$ 66,900
Vested and not yet released (in shares)								938,000
Performance stock units (PSUs)
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Award expiration period					10 years
Number of performance conditions \| performanceCondition					2
Terms of award, stock price hurdle period					10 years
Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Grant Date Fair Value \| $						9,600		$ 9,600
Performance stock units (PSUs) \| Monte Carlo simulation
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Grant date fair value \| $								$ 128,800
Performance stock units (PSUs) \| Series B common stock
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of shares receivable per share based payments award (in shares)					1
Performance stock units (PSUs) \| 2021 Plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Award vesting period	3 years
Performance stock units (PSUs) \| 2021 Plan \| Series A common stock
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Granted (in shares)	236,000
Performance stock units (PSUs) \| The Plans
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Non-vested award, cost not yet recognized, period for recognition								1 year 3 months 18 days
Cost not yet recognized, outstanding awards \| $						$ 8,500		$ 8,500
Performance stock units (PSUs) \| The Founders Grant
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Granted (in shares)					4,398,000

Warby Parker Inc. 10-Q