CONSOLIDATED STATEMENTS OF SHAREHOLDERS' EQUITY - USD ($) shares in Thousands, $ in Millions	Total	Common Stock [Member]	Preferred Stock [Member]	Additional Paid-in Capital [Member]	Reserve for ESOP Debt Retirement [Member]	AOCI Attributable to Parent [Member]	Treasury Stock [Member]	Retained Earnings [Member]	Noncontrolling Interest [Member]
Common Stock, Shares, Outstanding, Beginning Balance at Jun. 30, 2019		2,504,751
Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest, Beginning Balance at Jun. 30, 2019	$ 47,579	$ 4,009	$ 928	$ 63,827	$ (1,146)	$ (14,936)	$ (100,406)	$ 94,918	$ 385
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net Earnings	3,617							3,593	24
Other Comprehensive Income (Loss), Net of Tax	(366)					(362)			(4)
Dividends, Common Stock	(1,874)							(1,874)
Dividends, Preferred Stock	(65)							(65)
Stock Repurchased During Period, Shares		(25,405)
Stock Repurchased During Period, Value	(3,000)						(3,000)
Shares Issued, Shares, Share-based Payment Arrangement, after Forfeiture		13,050
Proceeds, Issuance of Shares, Share-based Payment Arrangement, Including Option Exercised	1,005			120			885
Stock Issued During Period, Shares, Conversion of Convertible Securities		1,416
Stock Issued During Period, Value, Conversion of Convertible Securities	0		(13)	2			11
ESOP Debt Impacts	87				34			53
Noncontrolling Interest, Period Increase (Decrease)	1								1
Common Stock, Shares, Outstanding, Ending Balance at Sep. 30, 2019		2,493,812
Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest, Ending Balance at Sep. 30, 2019	46,984	$ 4,009	915	63,949	(1,112)	(15,298)	(102,510)	96,625	406
Common Stock, Shares, Outstanding, Beginning Balance at Jun. 30, 2020		2,479,746
Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest, Beginning Balance at Jun. 30, 2020	46,878	$ 4,009	897	64,194	(1,080)	(16,165)	(105,573)	100,239	357
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net Earnings	4,308							4,277	31
Other Comprehensive Income (Loss), Net of Tax	289					284			5
Dividends, Common Stock	(1,969)							(1,969)
Dividends, Preferred Stock	(66)							(66)
Stock Repurchased During Period, Shares		(14,642)
Stock Repurchased During Period, Value	(2,000)						(2,000)
Shares Issued, Shares, Share-based Payment Arrangement, after Forfeiture		13,504
Proceeds, Issuance of Shares, Share-based Payment Arrangement, Including Option Exercised	1,043			271			772
Stock Issued During Period, Shares, Conversion of Convertible Securities		998
Stock Issued During Period, Value, Conversion of Convertible Securities	0		(9)	2			7
ESOP Debt Impacts	92				34			58
Noncontrolling Interest, Period Increase (Decrease)	1								1
Common Stock, Shares, Outstanding, Ending Balance at Sep. 30, 2020		2,479,606
Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest, Ending Balance at Sep. 30, 2020	$ 48,576	$ 4,009	$ 888	$ 64,467	$ (1,046)	$ (15,881)	$ (106,794)	$ 102,539	$ 394