v3.26.3
Employee Benefit Plan, Schedule, Asset Held for Investment (Details)
shares in Thousands, $ in Thousands
12 Months Ended
Mar. 31, 2026
USD ($)
shares
EBP, Schedule of Asset Held for Investment [Abstract]  
EBP, Plan Number 001
EBP, Plan Name ADVANCED DRAINAGE SYSTEMS, INC.RETIREMENT AND STOCK OWNERSHIP PLAN
Investment, Identifier [Axis]: Advanced Drainage Systems, Inc.  
EBP, Schedule of Asset Held for Investment [Abstract]  
EBP, Asset Held for Investment $ 595,111
EBP, Schedule of Asset Held for Investment [Line Items]  
EBP, Asset Held for Investment $ 595,111
EBP, Investment, Number of Shares | shares 4,340
Investment, Identifier [Axis]: Blended Research International Equity Fund  
EBP, Schedule of Asset Held for Investment [Line Items]  
EBP, Investment, Number of Shares | shares 382
Investment, Identifier [Axis]: DWS RREEF Real Assets Fund  
EBP, Schedule of Asset Held for Investment [Abstract]  
EBP, Asset Held for Investment $ 2,801
EBP, Schedule of Asset Held for Investment [Line Items]  
EBP, Asset Held for Investment $ 2,801
EBP, Investment, Number of Shares | shares 204
Investment, Identifier [Axis]: Dodge & Cox Income Fund  
EBP, Schedule of Asset Held for Investment [Abstract]  
EBP, Asset Held for Investment $ 12,986
EBP, Schedule of Asset Held for Investment [Line Items]  
EBP, Asset Held for Investment $ 12,986
EBP, Investment, Number of Shares | shares 1,020
Investment, Identifier [Axis]: Fidelity 500 Index Fund  
EBP, Schedule of Asset Held for Investment [Abstract]  
EBP, Asset Held for Investment $ 105,206
EBP, Schedule of Asset Held for Investment [Line Items]  
EBP, Asset Held for Investment $ 105,206
EBP, Investment, Number of Shares | shares 463
Investment, Identifier [Axis]: Fidelity Extended Market Index Fund  
EBP, Schedule of Asset Held for Investment [Abstract]  
EBP, Asset Held for Investment $ 17,159
EBP, Schedule of Asset Held for Investment [Line Items]  
EBP, Asset Held for Investment $ 17,159
EBP, Investment, Number of Shares | shares 173
Investment, Identifier [Axis]: Fidelity International Index Fund  
EBP, Schedule of Asset Held for Investment [Abstract]  
EBP, Asset Held for Investment $ 15,883
EBP, Schedule of Asset Held for Investment [Line Items]  
EBP, Asset Held for Investment $ 15,883
EBP, Investment, Number of Shares | shares 259
Investment, Identifier [Axis]: Fidelity Stock Selector Small Cap Fund  
EBP, Schedule of Asset Held for Investment [Abstract]  
EBP, Asset Held for Investment $ 8,617
EBP, Schedule of Asset Held for Investment [Line Items]  
EBP, Asset Held for Investment $ 8,617
EBP, Investment, Number of Shares | shares 195
Investment, Identifier [Axis]: Fidelity US Bond Index Fund  
EBP, Schedule of Asset Held for Investment [Abstract]  
EBP, Asset Held for Investment $ 6,159
EBP, Schedule of Asset Held for Investment [Line Items]  
EBP, Asset Held for Investment $ 6,159
EBP, Investment, Number of Shares | shares 588
Investment, Identifier [Axis]: Growth Fund  
EBP, Schedule of Asset Held for Investment [Abstract]  
EBP, Asset Held for Investment $ 6,777
EBP, Schedule of Asset Held for Investment [Line Items]  
EBP, Asset Held for Investment 6,777
Investment, Identifier [Axis]: JP Morgan US Equity Fund  
EBP, Schedule of Asset Held for Investment [Abstract]  
EBP, Asset Held for Investment 25,259
EBP, Schedule of Asset Held for Investment [Line Items]  
EBP, Asset Held for Investment $ 25,259
EBP, Investment, Number of Shares | shares 1,012
Investment, Identifier [Axis]: Principal Stable Value Z Fund  
EBP, Schedule of Asset Held for Investment [Abstract]  
EBP, Asset Held for Investment $ 33,102
EBP, Schedule of Asset Held for Investment [Line Items]  
EBP, Asset Held for Investment $ 33,102
EBP, Investment, Number of Shares | shares 1,256
Investment, Identifier [Axis]: Vanguard Target Retirement 2020 Investment Fund  
EBP, Schedule of Asset Held for Investment [Abstract]  
EBP, Asset Held for Investment $ 4,185
EBP, Schedule of Asset Held for Investment [Line Items]  
EBP, Asset Held for Investment $ 4,185
EBP, Investment, Number of Shares | shares 153
Investment, Identifier [Axis]: Vanguard Target Retirement 2025 Investment Fund  
EBP, Schedule of Asset Held for Investment [Abstract]  
EBP, Asset Held for Investment $ 15,817
EBP, Schedule of Asset Held for Investment [Line Items]  
EBP, Asset Held for Investment $ 15,817
EBP, Investment, Number of Shares | shares 799
Investment, Identifier [Axis]: Vanguard Target Retirement 2030 Investment Fund  
EBP, Schedule of Asset Held for Investment [Abstract]  
EBP, Asset Held for Investment $ 59,738
EBP, Schedule of Asset Held for Investment [Line Items]  
EBP, Asset Held for Investment $ 59,738
EBP, Investment, Number of Shares | shares 1,426
Investment, Identifier [Axis]: Vanguard Target Retirement 2035 Investment Fund  
EBP, Schedule of Asset Held for Investment [Abstract]  
EBP, Asset Held for Investment $ 77,399
EBP, Schedule of Asset Held for Investment [Line Items]  
EBP, Asset Held for Investment $ 77,399
EBP, Investment, Number of Shares | shares 2,859
Investment, Identifier [Axis]: Vanguard Target Retirement 2040 Investment Fund  
EBP, Schedule of Asset Held for Investment [Abstract]  
EBP, Asset Held for Investment $ 59,579
EBP, Schedule of Asset Held for Investment [Line Items]  
EBP, Asset Held for Investment $ 59,579
EBP, Investment, Number of Shares | shares 1,207
Investment, Identifier [Axis]: Vanguard Target Retirement 2045 Investment Fund  
EBP, Schedule of Asset Held for Investment [Abstract]  
EBP, Asset Held for Investment $ 57,141
EBP, Schedule of Asset Held for Investment [Line Items]  
EBP, Asset Held for Investment $ 57,141
EBP, Investment, Number of Shares | shares 1,666
Investment, Identifier [Axis]: Vanguard Target Retirement 2050 Investment Fund  
EBP, Schedule of Asset Held for Investment [Abstract]  
EBP, Asset Held for Investment $ 43,404
EBP, Schedule of Asset Held for Investment [Line Items]  
EBP, Asset Held for Investment $ 43,404
EBP, Investment, Number of Shares | shares 743
Investment, Identifier [Axis]: Vanguard Target Retirement 2055 Investment Fund  
EBP, Schedule of Asset Held for Investment [Abstract]  
EBP, Asset Held for Investment $ 31,084
EBP, Schedule of Asset Held for Investment [Line Items]  
EBP, Asset Held for Investment $ 31,084
EBP, Investment, Number of Shares | shares 477
Investment, Identifier [Axis]: Vanguard Target Retirement 2060 Investment Fund  
EBP, Schedule of Asset Held for Investment [Abstract]  
EBP, Asset Held for Investment $ 18,819
EBP, Schedule of Asset Held for Investment [Line Items]  
EBP, Asset Held for Investment $ 18,819
EBP, Investment, Number of Shares | shares 313
Investment, Identifier [Axis]: Vanguard Target Retirement 2065 Investment Fund  
EBP, Schedule of Asset Held for Investment [Abstract]  
EBP, Asset Held for Investment $ 9,884
EBP, Schedule of Asset Held for Investment [Line Items]  
EBP, Asset Held for Investment $ 9,884
EBP, Investment, Number of Shares | shares 251
Investment, Identifier [Axis]: Vanguard Target Retirement 2070 Investment Fund  
EBP, Schedule of Asset Held for Investment [Abstract]  
EBP, Asset Held for Investment $ 7,919
EBP, Schedule of Asset Held for Investment [Line Items]  
EBP, Asset Held for Investment $ 7,919
EBP, Investment, Number of Shares | shares 253
Investment, Identifier [Axis]: Vanguard Target Retirement Income Investment Fund  
EBP, Schedule of Asset Held for Investment [Abstract]  
EBP, Asset Held for Investment $ 8,635
EBP, Schedule of Asset Held for Investment [Line Items]  
EBP, Asset Held for Investment $ 8,635
EBP, Investment, Number of Shares | shares 629