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, Common	Retained Earnings [Member]	Noncontrolling Interest [Member]
Common Stock, Shares, Outstanding, Beginning Balance at Jun. 30, 2022		2,393,877
Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest, Beginning Balance at Jun. 30, 2022	$ 46,854	$ 4,009	$ 843	$ 65,795	$ (916)	$ (12,189)	$ (123,382)	$ 112,429	$ 265
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net Earnings	7,922							7,872	50
Other Comprehensive Income (Loss), Net of Tax	$ (325)					(317)			(8)
Common Stock, Dividends, Per Share, Cash Paid	$ 1.8266
Dividends, Common Stock	$ (4,357)							(4,357)
Dividends, Preferred Stock	(141)							(141)
Stock Repurchased During Period, Shares		(42,615)
Stock Repurchased During Period, Value	(6,002)						(6,002)
Shares Issued, Shares, Share-based Payment Arrangement, after Forfeiture		6,452
Proceeds, Issuance of Shares, Share-based Payment Arrangement, Including Option Exercised	710			348			362
Stock Issued During Period, Shares, Conversion of Convertible Securities		1,430
Stock Issued During Period, Value, Conversion of Convertible Securities	0		12	2			10
ESOP Debt Impacts	101				46			55
Noncontrolling Interest, Period Increase (Decrease)	(37)			0					(37)
Common Stock, Shares, Outstanding, Ending Balance at Dec. 31, 2022		2,359,144
Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest, Ending Balance at Dec. 31, 2022	44,725	$ 4,009	831	66,145	(870)	(12,506)	(129,012)	115,858	270
Common Stock, Shares, Outstanding, Beginning Balance at Sep. 30, 2022		2,369,697
Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest, Beginning Balance at Sep. 30, 2022	44,334	$ 4,009	834	65,955	(870)	(12,811)	(127,205)	114,163	259
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net Earnings	3,959							3,933	26
Other Comprehensive Income (Loss), Net of Tax	$ 302					305			(3)
Common Stock, Dividends, Per Share, Cash Paid	$ 0.9133
Dividends, Common Stock	$ (2,168)							(2,168)
Dividends, Preferred Stock	(70)							(70)
Stock Repurchased During Period, Shares		(14,426)
Stock Repurchased During Period, Value	(2,002)						(2,002)
Shares Issued, Shares, Share-based Payment Arrangement, after Forfeiture		3,441
Proceeds, Issuance of Shares, Share-based Payment Arrangement, Including Option Exercised	382			189			193
Stock Issued During Period, Shares, Conversion of Convertible Securities		432
Stock Issued During Period, Value, Conversion of Convertible Securities	0		3	1			2
ESOP Debt Impacts	0				0			0
Noncontrolling Interest, Period Increase (Decrease)	(12)			0					(12)
Common Stock, Shares, Outstanding, Ending Balance at Dec. 31, 2022		2,359,144
Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest, Ending Balance at Dec. 31, 2022	44,725	$ 4,009	831	66,145	(870)	(12,506)	(129,012)	115,858	270
Common Stock, Shares, Outstanding, Beginning Balance at Jun. 30, 2023		2,362,120
Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest, Beginning Balance at Jun. 30, 2023	47,065	$ 4,009	819	66,556	(821)	(12,220)	(129,736)	118,170	288
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net Earnings	8,049							7,988	60
Other Comprehensive Income (Loss), Net of Tax	$ 51					53			(2)
Common Stock, Dividends, Per Share, Cash Paid	$ 1.8814
Dividends, Common Stock	$ (4,450)							(4,450)
Dividends, Preferred Stock	(140)							(140)
Stock Repurchased During Period, Shares		(16,722)
Stock Repurchased During Period, Value	(2,516)						(2,516)
Shares Issued, Shares, Share-based Payment Arrangement, after Forfeiture		6,351
Proceeds, Issuance of Shares, Share-based Payment Arrangement, Including Option Exercised	734			378			356
Stock Issued During Period, Shares, Conversion of Convertible Securities		1,273
Stock Issued During Period, Value, Conversion of Convertible Securities	0		10	1			9
ESOP Debt Impacts	87				39			48
Noncontrolling Interest, Period Increase (Decrease)	(52)			0					(52)
Common Stock, Shares, Outstanding, Ending Balance at Dec. 31, 2023		2,353,021
Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest, Ending Balance at Dec. 31, 2023	48,829	$ 4,009	809	66,935	(782)	(12,167)	(131,887)	121,617	294
Common Stock, Shares, Outstanding, Beginning Balance at Sep. 30, 2023		2,356,886
Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest, Beginning Balance at Sep. 30, 2023	48,014	$ 4,009	812	66,822	(782)	(12,583)	(131,029)	120,443	321
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net Earnings	3,493							3,468	25
Other Comprehensive Income (Loss), Net of Tax	$ 416					416			0
Common Stock, Dividends, Per Share, Cash Paid	$ 0.9407
Dividends, Common Stock	$ (2,225)							(2,225)
Dividends, Preferred Stock	(70)							(70)
Stock Repurchased During Period, Shares		(6,879)
Stock Repurchased During Period, Value	(1,008)						(1,008)
Shares Issued, Shares, Share-based Payment Arrangement, after Forfeiture		2,630
Proceeds, Issuance of Shares, Share-based Payment Arrangement, Including Option Exercised	260			113			147
Stock Issued During Period, Shares, Conversion of Convertible Securities		385
Stock Issued During Period, Value, Conversion of Convertible Securities	0		3	0			3
ESOP Debt Impacts	0				0			0
Noncontrolling Interest, Period Increase (Decrease)	(52)			0					(52)
Common Stock, Shares, Outstanding, Ending Balance at Dec. 31, 2023		2,353,021
Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest, Ending Balance at Dec. 31, 2023	$ 48,829	$ 4,009	$ 809	$ 66,935	$ (782)	$ (12,167)	$ (131,887)	$ 121,617	$ 294