Consolidated Statement of Changes in Equity - USD ($) shares in Thousands, $ in Millions	Total	Common Stock [Member]	Treasury Stock, Common	Retained Earnings [Member]	Unearned ESOP Shares [Member]	Accumulated Other Comprehensive (Loss) Income [Member]	Noncontrolling Interest
Increase (Decrease) In Equity [Roll Forward]
Stockholders' Equity Attributable to Parent		$ 36,930	$ (10,407)	$ 49,423	$ (49)	$ (3,734)
Noncontrolling interest							$ 1,689
Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest	$ 73,852
Common stock plans activity		553			11
Common Stock repurchased		0	(2,331)
Common stock contributed to defined benefit pension plans		0	0
Purchase of subsidiary shares from noncontrolling interest, net		0
Net Income - Retained Earnings	$ 3,864			3,864
Dividends on Common Stock				(2,957)
Dividends on ESOP Common Stock				(50)
Other			11	(15)
Other comprehensive income (loss), net of tax - AOCI						1,819
Net income							248
Redeemable Noncontrolling Interest in subsidiaries' earnings							(8)
Dividends attributable to noncontrolling interest							(332)
Purchase of subsidiary shares from noncontrolling interest, net							0
Disposition of noncontrolling interest, net							(1)
Capital contributions							0
Shares of common stock issued under employee plans, net	1,893
Shares of common stock repurchased	28,052
Shares of common stock contributed to benefit plans	0
Dividends per share of common stock	$ 2.005
Stockholders' Equity Attributable to Parent		37,483	(12,727)	50,265	(38)	(1,915)
Noncontrolling interest							1,596
Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest	$ 74,664
Common stock plans activity		485			10
Common Stock repurchased		0	(2,803)
Common stock contributed to defined benefit pension plans		0	0
Purchase of subsidiary shares from noncontrolling interest, net		(29)
Net Income - Retained Earnings	$ 5,197			5,197
Dividends on Common Stock				(3,128)
Dividends on ESOP Common Stock				(54)
Other			0	(11)
Other comprehensive income (loss), net of tax - AOCI						(103)
Net income							111
Redeemable Noncontrolling Interest in subsidiaries' earnings							(8)
Dividends attributable to noncontrolling interest							(132)
Purchase of subsidiary shares from noncontrolling interest, net							(19)
Disposition of noncontrolling interest, net							(13)
Capital contributions							11
Shares of common stock issued under employee plans, net	2,894
Shares of common stock repurchased	29,935
Shares of common stock contributed to benefit plans	0
Dividends per share of common stock	$ 2.160
Stockholders' Equity Attributable to Parent	$ 72,632	37,939	(15,530)	52,269	(28)	(2,018)
Noncontrolling interest	1,546						1,546
Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest	74,178
Common stock plans activity		610			13
Common Stock repurchased		(1,500)	(11,490)
Common stock contributed to defined benefit pension plans	50	7	43
Purchase of subsidiary shares from noncontrolling interest, net		(1)
Net Income - Retained Earnings	$ 3,195			3,195
Dividends on Common Stock				(3,239)
Dividends on ESOP Common Stock				(56)
Other			0	(15)
Other comprehensive income (loss), net of tax - AOCI						(401)
Net income							185
Redeemable Noncontrolling Interest in subsidiaries' earnings							(8)
Dividends attributable to noncontrolling interest							(108)
Purchase of subsidiary shares from noncontrolling interest, net							0
Disposition of noncontrolling interest, net							(3)
Capital contributions							0
Shares of common stock issued under employee plans, net	1,757
Shares of common stock repurchased	141,712
Shares of common stock contributed to benefit plans	623
Dividends per share of common stock	$ 2.320
Stockholders' Equity Attributable to Parent	$ 59,798	$ 37,055	$ (26,977)	$ 52,154	$ (15)	$ (2,419)
Noncontrolling interest	1,612						$ 1,612
Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest	$ 61,410