CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Statement of Comprehensive Income [Abstract]
Net income	$ 1,509	$ 1,608	$ 2,073
Other comprehensive income (loss):
Net unrealized gains (losses) on cash flow hedge derivatives arising during the period, net of income taxes of ($194), ($39) and ($466), respectively	(531)	(106)	(1,340)
Reclassification adjustment for net (gains) losses on cash flow hedge derivatives included in net income, net of income taxes of $253, $161 and $30, respectively	693	435	85
Net unrealized gains (losses) on AFS securities arising during the period, net of income taxes of ($27), $119 and ($868), respectively	(90)	350	(2,608)
Reclassification of net securities (gains) losses to net income, net of income taxes of $19, $28 and ($2), respectively	59	83	(7)
Defined benefit plans:
Actuarial gain (loss) arising during the period, net of income taxes of $7, $15 and ($15), respectively	19	28	(37)
Amortization of actuarial (gain) loss to net income, net of income taxes of $4, $5 and $2, respectively	13	12	12
Total other comprehensive income (loss), net of income taxes	163	802	(3,895)
Total comprehensive income (loss)	$ 1,672	$ 2,410	$ (1,822)