v3.26.1
Statements of Net Assets Available for Benefits - Retirement Savings Plan - USD ($)
$ in Thousands
Dec. 31, 2025
Dec. 31, 2024
Assets    
Investments, at fair value $ 17,539,923 $ 15,605,131
Investments, at contract value 1,057,630 0
Plan interest in the Southwest Airlines Co. Qualified    
Retirement Plans Master Trust, at contract value 0 1,159,079
Receivables:    
Notes receivable from participants 209,715 197,596
Profit-sharing contributions 70,049 75,138
Employer contributions 15,355 15,380
Participant contributions 19,214 19,305
Other 0 691
Total receivables 314,333 308,110
Total assets 18,911,886 17,072,320
Liabilities:    
Other liabilities 650 0
Net assets available for benefits $ 18,911,236 $ 17,072,320