XML 111 R36.htm IDEA: XBRL DOCUMENT v3.25.2
Comprehensive Income (Loss) - Differences between Net Income and Comprehensive Loss (Details) - USD ($)
$ in Millions
 3 Months Ended 6 Months Ended
Jun. 30, 2025
Mar. 31, 2025
Jun. 30, 2024
Mar. 31, 2024
Jun. 30, 2025
Jun. 30, 2024
Comprehensive Income (Loss), Net of Tax, Attributable to Parent [Abstract]            
Net income $ 213   $ 367   $ 64 $ 137
Unrealized gain (loss) on fuel derivative instruments, net of deferred taxes (12)   (10)   (12) 7
Other, net of deferred taxes 1   2   2 4
Total other comprehensive loss (11)   (8)   (10) 11
COMPREHENSIVE INCOME 202 $ (148) 359 $ (212) 54 148
Derivative deferred taxes (4)   (3)   (4) 3
Other deferred taxes $ 1   $ 0   $ 1 $ 0