Condensed Consolidated Statement of Changes in Equity - USD ($) shares in Thousands, $ in Millions	Total	Common Stock	Treasury Stock	Retained Earnings	Unearned ESOP Shares	Accumulated Other Comprehensive Loss	Noncontrolling Interest
Equity beginning balance at Dec. 31, 2023	$ 61,410	$ 37,055	$ (26,977)	$ 52,154	$ (15)	$ (2,419)	$ 1,612
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Common stock plans activity		(6)
Share-based 401(k) matching contributions		59	0		4
Common stock repurchased			(52)
Net income	1,743			1,709			34
Dividends on common stock				(769)
Dividends on ESOP common stock				(14)
Other				(28)
Other comprehensive income (loss), net of tax	(216)					(216)
Less: Redeemable noncontrolling interest net income							0
Dividends attributable to noncontrolling interest							(31)
Equity ending balance at Mar. 31, 2024	$ 62,100	37,108	(27,029)	53,052	(11)	(2,635)	1,615
Supplemental share information
Shares of common stock issued under employee plans, net (in shares)	3,159
Shares of common stock repurchased (in shares)	560
Treasury shares reissued related to 401(k) matching contributions (in shares)	0
Dividends declared per share of common stock (in dollars per share)	$ 0.590
Equity beginning balance at Dec. 31, 2024	$ 61,923	37,434	(27,112)	53,589	0	(3,755)	1,767
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Common stock plans activity		7
Share-based 401(k) matching contributions		74	93		0
Common stock repurchased			(50)
Net income	1,625			1,535			90
Dividends on common stock				(803)
Dividends on ESOP common stock				(37)
Other				(7)
Other comprehensive income (loss), net of tax	548					548
Less: Redeemable noncontrolling interest net income							(2)
Dividends attributable to noncontrolling interest							(64)
Equity ending balance at Mar. 31, 2025	$ 63,307	$ 37,515	$ (27,069)	$ 54,277	$ 0	$ (3,207)	$ 1,791
Supplemental share information
Shares of common stock issued under employee plans, net (in shares)	2,903
Shares of common stock repurchased (in shares)	396
Treasury shares reissued related to 401(k) matching contributions (in shares)	1,323
Dividends declared per share of common stock (in dollars per share)	$ 0.630