v3.25.1
DEBT - Schedule of Contractual Principal Payments (Details) - UAL And United
$ in Millions
Mar. 31, 2025
USD ($)
Debt Instrument [Line Items]  
Last nine months of 2025 $ 2,085
2026 4,819
2027 2,353
2028 1,800
2029 2,892
After 2029 10,063
Total $ 24,011