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CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME - USD ($)
$ in Millions
 3 Months Ended 6 Months Ended
Jun. 30, 2024
Jun. 30, 2023
Jun. 30, 2024
Jun. 30, 2023
Statement of Comprehensive Income [Abstract]        
Net income $ 780 $ 468 $ 1,419 $ 1,517
Other comprehensive income (loss), net of tax        
Change in fair value of derivatives, net of tax of $(3), $(15), $19 and $(22), respectively 11 51 (64) 74
Derivative amounts reclassified to net income, net of tax of $(3), $7, $3 and $10, respectively 13 (25) (8) (37)
Changes in benefit plan obligations and other, net of tax of $—, $—, $— and $1, respectively (4) (2) (3) (4)
Total other comprehensive income (loss), net of tax 20 24 (75) 33
Comprehensive income $ 800 $ 492 $ 1,344 $ 1,550