v3.26.1
FORM 5500, Schedule H, Line 4i - Schedule of Assets (Held at End of Year) (Details) - EBP 001 - USD ($)
12 Months Ended
Dec. 31, 2025
Dec. 31, 2024
EBP, Schedule of Asset Held for Investment [Line Items]    
Entity tax identification number 91-0135860  
Plan number 001  
Fair value $ 244,097,792  
WaFd, Inc. common stock    
EBP, Schedule of Asset Held for Investment [Line Items]    
Investment, number of shares 196,813 213,623
Mutual funds    
EBP, Schedule of Asset Held for Investment [Line Items]    
Fair value $ 223,721,255  
Collective trusts    
EBP, Schedule of Asset Held for Investment [Line Items]    
Fair value 14,072,623  
Investment, Identifier [Axis]: Collective trusts | ClearBridge Large Cap Growth R1 | Large Growth Collective Fund    
EBP, Schedule of Asset Held for Investment [Line Items]    
Fair value 6,906,581  
Investment, Identifier [Axis]: Collective trusts | T. Rowe Price Stable Value Common Trust Fund | Stable Value Collective Fund    
EBP, Schedule of Asset Held for Investment [Line Items]    
Fair value 7,166,042  
Investment, Identifier [Axis]: Mutual funds | American Century Mid Cap Value R6 | Mid-Cap Value    
EBP, Schedule of Asset Held for Investment [Line Items]    
Fair value 1,651,782  
Investment, Identifier [Axis]: Mutual funds | American Funds Europacific Growth R6 | Foreign Large Growth    
EBP, Schedule of Asset Held for Investment [Line Items]    
Fair value 1,120,334  
Investment, Identifier [Axis]: Mutual funds | Fidelity 500 Index | Large Blend    
EBP, Schedule of Asset Held for Investment [Line Items]    
Fair value 35,260,353  
Investment, Identifier [Axis]: Mutual funds | Fidelity Extended Market Index | Mid-Cap Blend    
EBP, Schedule of Asset Held for Investment [Line Items]    
Fair value 3,447,719  
Investment, Identifier [Axis]: Mutual funds | Fidelity Freedom Index 2010 Instl Prem | Target Date 2000-2010    
EBP, Schedule of Asset Held for Investment [Line Items]    
Fair value 1,024,546  
Investment, Identifier [Axis]: Mutual funds | Fidelity Freedom Index 2015 Instl Prem | Target Date 2015    
EBP, Schedule of Asset Held for Investment [Line Items]    
Fair value 2,632,267  
Investment, Identifier [Axis]: Mutual funds | Fidelity Freedom Index 2020 Instl Prem | Target Date 2020    
EBP, Schedule of Asset Held for Investment [Line Items]    
Fair value 8,514,454  
Investment, Identifier [Axis]: Mutual funds | Fidelity Freedom Index 2025 Instl Prem | Target Date 2025    
EBP, Schedule of Asset Held for Investment [Line Items]    
Fair value 16,568,798  
Investment, Identifier [Axis]: Mutual funds | Fidelity Freedom Index 2030 Instl Prem | Target Date 2030    
EBP, Schedule of Asset Held for Investment [Line Items]    
Fair value 22,324,028  
Investment, Identifier [Axis]: Mutual funds | Fidelity Freedom Index 2035 Instl Prem | Target Date 2035    
EBP, Schedule of Asset Held for Investment [Line Items]    
Fair value 26,559,554  
Investment, Identifier [Axis]: Mutual funds | Fidelity Freedom Index 2040 Instl Prem | Target Date 2040    
EBP, Schedule of Asset Held for Investment [Line Items]    
Fair value 20,846,704  
Investment, Identifier [Axis]: Mutual funds | Fidelity Freedom Index 2045 Instl Prem | Target Date 2045    
EBP, Schedule of Asset Held for Investment [Line Items]    
Fair value 21,785,216  
Investment, Identifier [Axis]: Mutual funds | Fidelity Freedom Index 2050 Instl Prem | Target Date 2050    
EBP, Schedule of Asset Held for Investment [Line Items]    
Fair value 17,190,943  
Investment, Identifier [Axis]: Mutual funds | Fidelity Freedom Index 2055 Instl Prem | Target Date 2055    
EBP, Schedule of Asset Held for Investment [Line Items]    
Fair value 12,471,392  
Investment, Identifier [Axis]: Mutual funds | Fidelity Freedom Index 2060 Instl Prem | Target Date 2060    
EBP, Schedule of Asset Held for Investment [Line Items]    
Fair value 6,871,849  
Investment, Identifier [Axis]: Mutual funds | Fidelity Freedom Index 2065 Instl Prem | Target Date 2065    
EBP, Schedule of Asset Held for Investment [Line Items]    
Fair value 2,231,143  
Investment, Identifier [Axis]: Mutual funds | Fidelity Freedom Index 2070 Instl Prem | Target Date 2065    
EBP, Schedule of Asset Held for Investment [Line Items]    
Fair value 52,627  
Investment, Identifier [Axis]: Mutual funds | Fidelity Freedom Index Inc Instl Prem | Target Date Retirement    
EBP, Schedule of Asset Held for Investment [Line Items]    
Fair value 1,845,135  
Investment, Identifier [Axis]: Mutual funds | Fidelity Mid Cap Growth Index | Mid-Cap Growth    
EBP, Schedule of Asset Held for Investment [Line Items]    
Fair value 2,869,616  
Investment, Identifier [Axis]: Mutual funds | Fidelity Total International Index | Foreign Large Blend    
EBP, Schedule of Asset Held for Investment [Line Items]    
Fair value 7,479,246  
Investment, Identifier [Axis]: Mutual funds | Fidelity US Bond Index | Intermediate Core Bond    
EBP, Schedule of Asset Held for Investment [Line Items]    
Fair value 2,089,661  
Investment, Identifier [Axis]: Mutual funds | JP Morgan Equity Income R6 | Large Value    
EBP, Schedule of Asset Held for Investment [Line Items]    
Fair value 1,791,518  
Investment, Identifier [Axis]: Mutual funds | MFS New Discovery Value R3 | Small Value    
EBP, Schedule of Asset Held for Investment [Line Items]    
Fair value 981,037  
Investment, Identifier [Axis]: Mutual funds | PGIM Total Return Bond R6 | Intermediate Core-Plus Bond    
EBP, Schedule of Asset Held for Investment [Line Items]    
Fair value 4,077,186  
Investment, Identifier [Axis]: Mutual funds | Vanguard Treasury Money Market | Money Market    
EBP, Schedule of Asset Held for Investment [Line Items]    
Fair value 160,025  
Investment, Identifier [Axis]: Mutual funds | Wasatch Core Growth | Small Growth    
EBP, Schedule of Asset Held for Investment [Line Items]    
Fair value 1,874,122  
Investment, Identifier [Axis]: WaFd, Inc. | 196,813 shares of common stock    
EBP, Schedule of Asset Held for Investment [Line Items]    
Fair value $ 6,303,914