v3.26.1
Employee Benefit Plan, Schedule, Asset Held for Investment (Details) - EBP-58-1533433-004 [BSSP] - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2025
Dec. 31, 2024
EBP, Schedule of Asset Held for Investment [Line Items]    
Entity Tax Identification Number 58-1533433  
EBP, Plan Number 004  
Investment at Fair Value $ 2,645,412 $ 2,478,101
Notes Receivable from Participants 45,737  
Asset Held for Investment, Total $ 2,176,942  
Asset Held for Investment, Party-in-Interest [true false] true  
Minimum    
EBP, Schedule of Asset Held for Investment [Line Items]    
Interest rate 4.25%  
Maximum    
EBP, Schedule of Asset Held for Investment [Line Items]    
Interest rate 10.50%  
U.S. Stock Market Index Fund    
EBP, Schedule of Asset Held for Investment [Line Items]    
Investment at Fair Value $ 1,003,448  
Equity Funds    
EBP, Schedule of Asset Held for Investment [Line Items]    
Investment at Fair Value $ 818,717  
Investment, Identifier [Axis]: DREYFUS GOVT CAS MGMT INST 289    
EBP, Schedule of Asset Held for Investment [Line Items]    
Asset Held for Investment, Party-in-Interest [true false] true  
Investment, Identifier [Axis]: LIFEPATH INDEX 2035 FUND    
EBP, Schedule of Asset Held for Investment [Line Items]    
Number of Shares 5,373,411  
Investment, Identifier [Axis]: AT&T Inc.    
EBP, Schedule of Asset Held for Investment [Line Items]    
Number of Shares 7,958,265  
Investment at Fair Value $ 197,683  
Asset Held for Investment, Party-in-Interest [true false] true  
Investment, Identifier [Axis]: BARCLAYS GLOBAL INVS N A INVT    
EBP, Schedule of Asset Held for Investment [Line Items]    
Number of Shares 2,520,362  
Investment at Fair Value $ 368,449  
Asset Held for Investment, Party-in-Interest [true false] true  
Investment, Identifier [Axis]: BGI MSCI ACWI EX-US INDEX    
EBP, Schedule of Asset Held for Investment [Line Items]    
Number of Shares 2,332,426  
Investment at Fair Value $ 108,881  
Asset Held for Investment, Party-in-Interest [true false] true  
Investment, Identifier [Axis]: BGI US EQUITY MARKET FUND F    
EBP, Schedule of Asset Held for Investment [Line Items]    
Number of Shares 236,569  
Investment at Fair Value $ 61,440  
Asset Held for Investment, Party-in-Interest [true false] true  
Investment, Identifier [Axis]: BLACKROCK RUSSELL 1000 INDEX FUND    
EBP, Schedule of Asset Held for Investment [Line Items]    
Number of Shares 5,078,174  
Investment at Fair Value $ 479,575  
Asset Held for Investment, Party-in-Interest [true false] true  
Investment, Identifier [Axis]: DREYFUS GOVERNMENT CASH MANAGEMENT FUND    
EBP, Schedule of Asset Held for Investment [Line Items]    
Investment at Fair Value $ 2,476  
Investment, Identifier [Axis]: DREYFUS GOVT CAS MGMT INST 289    
EBP, Schedule of Asset Held for Investment [Line Items]    
Maturity Date Dec. 31, 2075  
Number of Shares 2,475,436  
Investment, Identifier [Axis]: EXTENDED EQUITY MARKET FUND F    
EBP, Schedule of Asset Held for Investment [Line Items]    
Number of Shares 692,299  
Investment at Fair Value $ 93,984  
Asset Held for Investment, Party-in-Interest [true false] true  
Investment, Identifier [Axis]: LIFEPATH 2060 FUND    
EBP, Schedule of Asset Held for Investment [Line Items]    
Number of Shares 22,696  
Investment at Fair Value $ 661  
Asset Held for Investment, Party-in-Interest [true false] true  
Investment, Identifier [Axis]: LIFEPATH 2065 FUND    
EBP, Schedule of Asset Held for Investment [Line Items]    
Number of Shares 87,682  
Investment at Fair Value $ 1,829  
Asset Held for Investment, Party-in-Interest [true false] true  
Investment, Identifier [Axis]: LIFEPATH INDEX 2030 FUND    
EBP, Schedule of Asset Held for Investment [Line Items]    
Number of Shares 3,442,812  
Investment, Identifier [Axis]: LIFEPATH INDEX 2030 FUND    
EBP, Schedule of Asset Held for Investment [Line Items]    
Asset Held for Investment, Party-in-Interest [true false] true  
Investment, Identifier [Axis]: LIFEPATH INDEX 2030 FUND    
EBP, Schedule of Asset Held for Investment [Line Items]    
Investment at Fair Value $ 126,580  
Investment, Identifier [Axis]: LIFEPATH INDEX 2035 FUND    
EBP, Schedule of Asset Held for Investment [Line Items]    
Investment at Fair Value $ 203,120  
Asset Held for Investment, Party-in-Interest [true false] true  
Investment, Identifier [Axis]: LIFEPATH INDEX 2040 FUND    
EBP, Schedule of Asset Held for Investment [Line Items]    
Number of Shares 4,873,970  
Investment, Identifier [Axis]: LIFEPATH INDEX 2040 FUND    
EBP, Schedule of Asset Held for Investment [Line Items]    
Investment at Fair Value $ 216,790  
Asset Held for Investment, Party-in-Interest [true false] true  
Investment, Identifier [Axis]: LIFEPATH INDEX 2045 FUND    
EBP, Schedule of Asset Held for Investment [Line Items]    
Number of Shares 2,005,120  
Investment at Fair Value $ 88,368  
Asset Held for Investment, Party-in-Interest [true false] true  
Investment, Identifier [Axis]: LIFEPATH INDEX 2050 FUND    
EBP, Schedule of Asset Held for Investment [Line Items]    
Investment at Fair Value $ 12,709  
Asset Held for Investment, Party-in-Interest [true false] true  
Investment, Identifier [Axis]: LIFEPATH INDEX 2050 FUND    
EBP, Schedule of Asset Held for Investment [Line Items]    
Number of Shares 336,041  
Investment, Identifier [Axis]: LIFEPATH INDEX 2055 FUND    
EBP, Schedule of Asset Held for Investment [Line Items]    
Number of Shares 29,571  
Investment at Fair Value $ 1,476  
Asset Held for Investment, Party-in-Interest [true false] true  
Investment, Identifier [Axis]: LIFEPATH INDEX RETIREMENT FUND    
EBP, Schedule of Asset Held for Investment [Line Items]    
Number of Shares 5,574,267  
Investment at Fair Value $ 167,184  
Asset Held for Investment, Party-in-Interest [true false] true